/* ==========================================================================
   CalcSolver - Unified Style Sheet
   Includes: Theme, Scientific Calculator, Chatbot Widget, Vault Arcade Overlay
   ========================================================================== */

:root,
body.page-dark {
    /* Base Typography & Geometry */
    --font-sans: 'Plus Jakarta Sans', 'Outfit', system-ui, -apple-system, sans-serif;
    --font-accent: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-heart: #ff2a5f;
    --color-amber: #f59e0b;

    /* Dark Mode Core Tokens */
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #0df2fe;
    --color-accent-rgb: 13, 242, 254;
    --color-secondary: #7c3aed;
    --color-secondary-rgb: 124, 58, 237;

    --bg-app: #030712;
    --bg-surface: rgba(17, 24, 39, 0.7);
    --bg-surface-solid: #111827;
    --bg-surface-2: #1f293d;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(17, 24, 39, 0.6);
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

body.page-home {
    /* Light Mode Core Tokens */
    --color-primary: #4f46e5;
    --color-primary-light: #eef2ff;
    --color-accent: #4f46e5;
    --color-accent-rgb: 79, 70, 229;
    --color-secondary: #7c3aed;
    --color-secondary-rgb: 124, 58, 237;

    --bg-app: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.9);
    --bg-surface-solid: #ffffff;
    --bg-surface-2: #f1f5f9;

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;

    --glass-border: 1.5px solid #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.06);
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px;
    font-size: 16px;
    overflow-x: hidden;
    max-width: 100%;
}

section[id],
.hero-section[id],
.hero-calculator-col[id] {
    scroll-margin-top: 84px;
}

body {
    background-color: var(--bg-app);
    background-image:
        radial-gradient(ellipse 900px 600px at 15% 15%, rgba(124, 58, 237, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 700px 500px at 85% 20%, rgba(13, 242, 254, 0.08) 0%, transparent 70%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100%;
    width: 100%;
    padding-top: 70px;
}

body.page-home {
    background-color: var(--bg-app);
    background-image:
        radial-gradient(ellipse 900px 600px at 15% 15%, rgba(79, 70, 229, 0.05) 0%, transparent 70%),
        radial-gradient(ellipse 700px 500px at 85% 20%, rgba(234, 88, 12, 0.04) 0%, transparent 70%);
    color: var(--text-primary);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-app);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    background: none;
    border: none;
    outline: none;
    font-family: inherit;
    color: inherit;
}

/* Header */
/* ==========================================================================
   Header & Navigation (Modern Glassmorphic Fixed Header)
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(3, 7, 18, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    transition: transform 0.2s ease;
}

.brand:hover {
    transform: scale(1.02);
}

.brand-logo {
    border-radius: 10px;
    box-shadow: 0 0 14px rgba(13, 242, 254, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.brand:hover .brand-logo {
    box-shadow: 0 0 20px rgba(13, 242, 254, 0.7), 0 4px 12px rgba(124, 58, 237, 0.4);
    transform: scale(1.05);
}

.brand-name {
    font-family: var(--font-accent);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #ffffff, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 9999px;
    background: rgba(124, 58, 237, 0.15);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: #a78bfa;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Navigation Rules */
.desktop-nav {
    display: block;
}

.main-nav {
    display: none;
}

.nav-toggle,
.nav-close,
.drawer-brand {
    display: none;
}

.nav-scrim {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 99998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.nav-scrim.show {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* Nav links wrap */
.nav-links-wrap {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 6px;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 16px;
    border-radius: 9999px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.nav-link i {
    font-size: 0.85rem;
    opacity: 0.75;
    transition: opacity 0.2s ease;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.nav-link:hover i {
    opacity: 1;
}

.nav-link.active {
    color: #fff;
    background: rgba(124, 58, 237, 0.28);
    border: 1px solid rgba(124, 58, 237, 0.45);
    box-shadow: 0 2px 10px rgba(124, 58, 237, 0.25);
}

.nav-link.active i {
    opacity: 1;
    color: var(--color-accent);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.site-theme-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #f3f4f6;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-theme-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-1px) rotate(15deg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.header-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: 12px;
    font-size: 0.88rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    box-shadow: 0 3px 12px rgba(124, 58, 237, 0.35);
    transition: all 0.2s ease;
    text-decoration: none;
}

.header-cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(124, 58, 237, 0.5);
    color: #fff;
}

.header-cta-btn i {
    font-size: 0.85rem;
}

.nav-toggle,
.nav-close,
.drawer-brand {
    display: none;
}

/* Page Wrap & Section layout */
.page-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 40px 24px;
}

.section {
    padding: 48px 0;
}

.section-head {
    margin-bottom: 32px;
}

.eyebrow {
    font-family: var(--font-accent);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
}

.section-head h2 {
    font-family: var(--font-accent);
    font-size: 2rem;
    font-weight: 700;
    margin-top: 8px;
    color: #fff;
}

.section-head p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin-top: 8px;
}

/* ==========================================================================
   HERO & INTERACTIVE SHOWCASE (MODERN UI)
   ========================================================================== */
.hero-section {
    position: relative;
    padding: 28px 0 48px 0;
    overflow: hidden;
}

/* Background Ambient Glows - Seamless Full-Width Blend */
.hero-bg-glows {
    position: absolute;
    top: -80px;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 100vw;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: floatGlow 14s ease-in-out infinite alternate;
}

.glow-orb-1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.28) 0%, rgba(124, 58, 237, 0.12) 40%, transparent 70%);
    top: -100px;
    left: calc(50% - 650px);
}

.glow-orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 242, 254, 0.20) 0%, rgba(13, 242, 254, 0.06) 45%, transparent 70%);
    bottom: -40px;
    right: calc(50% - 600px);
    animation-delay: -7s;
}

.glow-grid {
    position: absolute;
    inset: 0;
    width: 100vw;
    background-image: radial-gradient(rgba(124, 58, 237, 0.08) 1px, transparent 1px);
    background-size: 28px 28px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 80%);
    opacity: 0.5;
}

@keyframes floatGlow {
    0% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(25px, 15px) scale(1.06);
    }

    100% {
        transform: translate(-20px, 30px) scale(0.96);
    }
}

/* 2-Column Hero Container */
.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
    align-items: flex-start;
}

/* Left Column: Content */
.hero-content {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    align-self: flex-start;
    padding: 6px 14px;
    border-radius: 9999px;
    background: rgba(124, 58, 237, 0.12);
    border: 1px solid rgba(124, 58, 237, 0.25);
    color: var(--color-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 10px rgba(124, 58, 237, 0.12);
    transition: var(--transition);
}

.hero-badge:hover {
    transform: translateY(-1px);
    border-color: rgba(124, 58, 237, 0.4);
}

.badge-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    font-size: 0.9rem;
}

.badge-dot {
    opacity: 0.4;
}

.badge-tag {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Hero Title */
.hero-title {
    font-family: var(--font-accent);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.14;
    letter-spacing: -0.035em;
    color: #fff;
}

.hero-gradient-text {
    background: linear-gradient(135deg, #a78bfa, #38bdf8 50%, #f472b6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Hero Description */
.hero-description {
    font-size: 1.12rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 540px;
}

/* Hero Actions */
.hero-action-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 4px;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
    background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 50%, #2563eb 100%);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.15) inset;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124, 58, 237, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.25) inset;
    color: #fff;
}

.btn-hero-primary .arrow-indicator {
    font-size: 0.85rem;
    transition: transform 0.2s ease;
}

.btn-hero-primary:hover .arrow-indicator {
    transform: translateX(4px);
}

.btn-hero-ghost {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 13px 24px;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.98rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-hero-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.25);
    color: #fff;
    transform: translateY(-1px);
}

/* Feature Tags */
.hero-feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 4px;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.feature-tag i {
    color: var(--color-accent);
    font-size: 0.8rem;
}

/* Stats Bar */
.hero-stats-bar {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-top: 8px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-accent);
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1.1;
    color: #fff;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
}

/* Right Column: Calculator Showcase */
.hero-calculator-col {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Floating Math Doodles */
.floating-math-doodles {
    position: absolute;
    inset: -20px;
    pointer-events: none;
    z-index: 1;
}

.hero-math-doodle {
    position: absolute;
    font-family: var(--font-accent), serif;
    font-weight: 800;
    color: rgba(124, 58, 237, 0.2);
    user-select: none;
    pointer-events: none;
    animation: floatDoodleAnim 7s ease-in-out infinite alternate;
}

.doodle-pi {
    top: 0%;
    left: -15px;
    font-size: 2.2rem;
    animation-delay: 0s;
}

.doodle-sqrt {
    top: -25px;
    right: 20px;
    font-size: 1.6rem;
    animation-delay: -1.5s;
    color: rgba(13, 242, 254, 0.25);
}

.doodle-sigma {
    bottom: 10%;
    left: -25px;
    font-size: 2rem;
    animation-delay: -3s;
}

.doodle-plus {
    top: 40%;
    right: -25px;
    font-size: 1.8rem;
    animation-delay: -4.5s;
    color: rgba(245, 158, 11, 0.25);
}

.doodle-sin {
    bottom: -15px;
    right: 30px;
    font-size: 1.2rem;
    animation-delay: -2s;
    font-family: var(--font-mono);
}

.doodle-inf {
    top: 48%;
    left: -20px;
    font-size: 1.7rem;
    animation-delay: -5s;
}

@keyframes floatDoodleAnim {
    0% {
        transform: translateY(0) rotate(0deg);
    }

    100% {
        transform: translateY(-12px) rotate(6deg);
    }
}

/* Calculator Glass Card */
.hero-calc-card {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 460px;
}

.calc-card-glass {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 28px;
    padding: 22px;
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.calc-card-glass:hover {
    box-shadow: 0 24px 60px -10px rgba(0, 0, 0, 0.7), 0 0 30px rgba(124, 58, 237, 0.15);
}

/* Calculator Top Bar */
.calc-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.calc-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.pulse-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 10px #10b981;
    animation: livePulse 2s infinite;
}

@keyframes livePulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.3);
    }
}

.calc-badge-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Calculator Footer Hint */
.calc-footer-hint {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.hint-dot {
    opacity: 0.4;
}

/* Compatibility Strip */
.trust-strip {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px 0;
    background: rgba(255, 255, 255, 0.01);
}

.trust-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.trust-list {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.trust-item i {
    font-size: 1.6rem;
}

.trust-text {
    display: flex;
    flex-direction: column;
}

.trust-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
}

.trust-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Scientific Calculator (Homepage Mode) */
.calc-section-wrap {
    display: flex;
    justify-content: center;
}

.calc-col {
    width: 100%;
    max-width: 480px;
}

.device-frame {
    background: rgba(15, 18, 28, 0.8);
    border: var(--glass-border);
    border-radius: 24px;
    padding: 20px;
    box-shadow: var(--shadow-main);
}

.calc-widget {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.calc-header {
    display: flex;
    justify-content: flex-end;
}

/* Code Mode Switch */
.code-toggle-wrap {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.code-toggle-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: var(--transition);
}

.code-toggle-input {
    display: none;
}

.code-toggle-track {
    width: 40px;
    height: 22px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 11px;
    position: relative;
    transition: var(--transition);
}

.code-toggle-thumb {
    width: 16px;
    height: 16px;
    background: var(--text-muted);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: var(--transition);
}

.code-toggle-input:checked+.code-toggle-track {
    background: rgba(13, 242, 254, 0.1);
    border-color: var(--color-accent);
}

.code-toggle-input:checked+.code-toggle-track .code-toggle-thumb {
    left: 20px;
    background: var(--color-accent);
    box-shadow: 0 0 10px rgba(13, 242, 254, 0.5);
}

.code-toggle-input:checked~.code-toggle-label {
    color: var(--color-accent);
}

/* Display */
.calc-display-wrap {
    background: #090a0f;
    border-radius: 12px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.calc-expr {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    min-height: 18px;
    word-break: break-all;
    text-align: right;
}

.calc-display {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 600;
    color: #fff;
    word-break: break-all;
    text-align: right;
    margin-top: 4px;
}

.calc-display.shake {
    animation: shake 0.4s ease;
    color: var(--color-heart);
}

/* Calculator Grid */
.calc-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.cbtn {
    height: 48px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.cbtn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.cbtn:active {
    transform: scale(0.96);
}

.cbtn-fn {
    color: var(--color-accent);
    background: rgba(13, 242, 254, 0.04);
}

.cbtn-cl {
    color: var(--color-heart);
    background: rgba(255, 42, 95, 0.04);
}

.cbtn-op {
    color: var(--color-amber);
    background: rgba(245, 158, 11, 0.04);
}

.cbtn-num {
    color: var(--text-primary);
}

.cbtn-wide2 {
    grid-column: span 2;
}

.cbtn-wide5 {
    grid-column: span 5;
}

.cbtn-eq {
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: #000;
    font-weight: 800;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(var(--color-accent-rgb), 0.2);
}

.cbtn-eq:hover {
    color: #000;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    box-shadow: 0 4px 20px rgba(var(--color-accent-rgb), 0.4);
}

/* Tools Grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}

.tool-card-link {
    background: var(--bg-surface);
    border: var(--glass-border);
    padding: 24px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
}

.tool-card-link:hover {
    transform: translateY(-3px);
    border-color: var(--color-secondary);
    background: rgba(17, 24, 39, 0.9);
    box-shadow: var(--shadow-main);
}

.tool-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 16px;
}

.tool-card-link h3 {
    font-family: var(--font-accent);
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.tool-card-link p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.tool-tag {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Blog Articles */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.post-card {
    background: var(--bg-surface);
    border: var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.post-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(17, 24, 39, 0.9);
}

.post-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.post-cat {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.post-card h3 {
    font-family: var(--font-accent);
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.post-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
}

.post-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.feature {
    padding: 32px 24px;
    border-radius: 16px;
}

.feature i {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.feature h3 {
    font-family: var(--font-accent);
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.feature p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* FAQ Details */
.faq-section {
    max-width: 760px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-surface);
    border: var(--glass-border);
    border-radius: 12px;
    padding: 16px 20px;
    transition: var(--transition);
}

.faq-item[open] {
    border-color: rgba(255, 255, 255, 0.15);
}

.faq-item summary {
    font-family: var(--font-accent);
    font-weight: 600;
    font-size: 1.05rem;
    color: #fff;
    cursor: pointer;
    outline: none;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--text-muted);
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    margin-top: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 12px;
}

/* Footer */
.site-footer {
    background: #02040a;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 64px 0 32px;
    position: relative;
    z-index: 10;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

@media (max-width: 960px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

.footer-col-brand .footer-desc {
    color: #94a3b8;
    font-size: 0.9375rem;
    line-height: 1.65;
    margin: 12px 0 18px;
    max-width: 320px;
}

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-badges .fbadge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    background: rgba(13, 242, 254, 0.08);
    border: 1px solid rgba(13, 242, 254, 0.2);
    color: #0df2fe;
}

.footer-title {
    color: #f8fafc;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links li a {
    color: #94a3b8;
    font-size: 0.875rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.footer-links li a i {
    font-size: 0.75rem;
    color: rgba(13, 242, 254, 0.5);
    width: 16px;
}

.footer-links li a:hover {
    color: #0df2fe;
    transform: translateX(3px);
}

.footer-links li a:hover i {
    color: #0df2fe;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 24px;
}

.footer-bottom-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.8125rem;
    color: #64748b;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-legal a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: #0df2fe;
}

/* ==========================================================================
   Chatbot Widget Styles
   ========================================================================== */

#chatbot-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 90;
}

#toggle-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-secondary), #6d28d9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

#toggle-btn:hover {
    transform: scale(1.05) rotate(3deg);
    box-shadow: 0 10px 35px rgba(124, 58, 237, 0.6);
}

#toggle-btn.exit-mode {
    background: linear-gradient(135deg, var(--color-danger), #b91c1c);
    box-shadow: 0 8px 30px rgba(239, 68, 68, 0.4);
}

#chatbot-window {
    position: absolute;
    bottom: 72px;
    right: 0;
    width: 340px;
    height: 460px;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(16px);
    border: var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--shadow-main);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: bottom right;
}

#chatbot-window.chat-closed {
    transform: scale(0.8) translateY(20px);
    opacity: 0;
    pointer-events: none;
}

#chatbot-window.chat-open {
    transform: scale(1) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.chat-header {
    background: rgba(31, 41, 55, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-id {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(124, 58, 237, 0.15);
    border: 1px solid rgba(124, 58, 237, 0.3);
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
}

.chat-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    display: block;
}

.chat-status {
    font-size: 0.7rem;
    color: var(--color-success);
    display: flex;
    align-items: center;
    gap: 4px;
}

.chat-status::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--color-success);
    border-radius: 50%;
}

/* Chat Header Pro Switch */
.pro-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.03);
    padding: 3px 8px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.pro-toggle:hover {
    background: rgba(255, 255, 255, 0.07);
}

.pro-word {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    letter-spacing: 0.03em;
}

.switch {
    appearance: none;
    width: 28px;
    height: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.switch::before {
    content: '';
    width: 11px;
    height: 11px;
    background: var(--text-muted);
    border-radius: 50%;
    position: absolute;
    top: 1px;
    left: 1px;
    transition: var(--transition);
}

.switch:checked {
    background: rgba(13, 242, 254, 0.15);
    border-color: var(--color-accent);
}

.switch:checked::before {
    left: 14px;
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent);
}

.switch:checked~.pro-word {
    color: var(--color-accent);
    text-shadow: 0 0 6px rgba(13, 242, 254, 0.4);
}

#chat-close {
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    padding: 4px;
}

#chat-close:hover {
    color: #fff;
}

.chat-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Chat Messages */
.msg {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 0.85rem;
    line-height: 1.5;
    word-break: break-word;
}

.msg-bot {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #f1f5f9;
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.msg-user {
    background: linear-gradient(135deg, var(--color-secondary), #6d28d9);
    color: #ffffff;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

/* Chat Input */
.chat-input-row {
    background: rgba(31, 41, 55, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 10px;
    display: flex;
    gap: 8px;
}

#chat-input {
    flex-grow: 1;
    height: 38px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 0 12px;
    color: #ffffff;
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition);
}

#chat-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

#chat-input:focus {
    border-color: var(--color-secondary);
    background: rgba(0, 0, 0, 0.4);
}

#chat-send {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-secondary), #6d28d9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

#chat-send:hover {
    transform: scale(1.02);
}

/* Typing indicator */
.typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingPulse 1.2s infinite ease-in-out;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

/* ==========================================================================
   Vault Arcade Overlay Styles
   ========================================================================== */

.vault-overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    z-index: 99999;
    background-color: var(--bg-app);
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    animation: fadeIn 0.2s ease-out;
}

body.vault-open .site-header,
body.vault-open .site-footer,
body.vault-open #main-nav,
body.vault-open #nav-scrim {
    display: none !important;
}

/* Vault Topbar */
.vault-topbar {
    height: 56px;
    background: rgba(17, 24, 39, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    z-index: 100000;
}

.vault-sidebar-toggle {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.vault-sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
}

.vault-esc-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.vault-esc-hint kbd {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    padding: 2px 5px;
    font-family: var(--font-mono);
}

.vault-esc-close {
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.vault-esc-close:hover {
    color: var(--text-primary);
}

.vault-topbar-center {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.vault-search-wrap {
    width: 100%;
    max-width: 380px;
    position: relative;
}

.vault-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.vault-search {
    width: 100%;
    height: 36px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 0 36px;
    color: #fff;
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition);
}

.vault-search:focus {
    border-color: var(--color-accent);
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 10px rgba(13, 242, 254, 0.15);
}

.vault-search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
}

.vault-search-clear:hover {
    color: #fff;
}

.vault-topbar-btn {
    height: 36px;
    padding: 0 14px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.vault-topbar-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.12);
}

.vault-fav-topbar-btn {
    position: relative;
}

.vault-fav-topbar-btn i {
    color: var(--color-heart);
}

.vault-fav-count {
    background: var(--color-heart);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 800;
    border-radius: 10px;
    padding: 1px 6px;
}

.vault-close-label {
    font-size: 0.75rem;
}

/* Vault Body Layout */
.vault-body {
    flex-grow: 1;
    display: flex;
    overflow: hidden;
    background-color: var(--bg-app);
}

/* Categories Sidebar */
.vault-cat-sidebar {
    width: 240px;
    background: rgba(10, 12, 18, 0.95);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
    transition: width 0.25s ease;
}

.vault-cat-sidebar.collapsed {
    width: 56px;
    padding: 16px 4px;
    overflow-x: hidden;
}

.vault-cat-sidebar.collapsed .vault-cat-link span,
.vault-cat-sidebar.collapsed .v-cat-badge,
.vault-cat-sidebar.collapsed .vault-cat-exit-btn span {
    display: none;
}

.vault-cat-sidebar.collapsed .vault-cat-link,
.vault-cat-sidebar.collapsed .vault-cat-exit-btn {
    justify-content: center;
    padding: 10px 0;
    gap: 0;
}

.vault-cat-link {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    gap: 12px;
    transition: var(--transition);
}

.vault-cat-link i {
    font-size: 1rem;
    width: 18px;
    text-align: center;
}

.vault-cat-link:hover {
    background: rgba(255, 255, 255, 0.03);
    color: #fff;
}

.vault-cat-link.active {
    background: rgba(13, 242, 254, 0.08);
    color: var(--color-accent);
    border-left: 3px solid var(--color-accent);
}

.v-cat-badge {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 1px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.v-cat-badge-hot {
    background: rgba(255, 42, 95, 0.15);
    color: var(--color-heart);
}

.v-cat-badge-top {
    background: rgba(13, 242, 254, 0.15);
    color: var(--color-accent);
}

.v-cat-badge-new {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.vault-fav-count-side {
    background: rgba(255, 42, 95, 0.15);
    color: var(--color-heart);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: auto;
}

.vault-cat-exit-btn {
    margin-top: auto;
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.vault-cat-exit-btn:hover {
    background: rgba(239, 68, 68, 0.05);
    color: var(--color-danger);
}

/* Vault Main Area & Grid */
.vault-main-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 24px;
}

.vault-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 16px;
}

/* Vault Empty States */
.no-results-msg {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 24px;
    margin: 20px auto;
    max-width: 520px;
    width: 100%;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.12);
    animation: fadeIn 0.3s ease-out;
}

.fav-empty-icon-wrap {
    position: relative;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 42, 95, 0.1);
    border: 1px solid rgba(255, 42, 95, 0.25);
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(255, 42, 95, 0.15);
}

.fav-empty-icon {
    font-size: 2rem;
    color: #ff2a5f;
    animation: favHeartBeat 2s ease-in-out infinite;
}

@keyframes favHeartBeat {

    0%,
    100% {
        transform: scale(1);
    }

    15% {
        transform: scale(1.15);
    }

    30% {
        transform: scale(1);
    }

    45% {
        transform: scale(1.12);
    }
}

.fav-empty-badge {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #7c3aed;
    color: #fff;
    font-size: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #0a0e17;
}

.no-results-msg h3 {
    font-family: var(--font-accent);
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.fav-empty-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.fav-love-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 10px;
    border-radius: 20px;
    background: rgba(255, 42, 95, 0.12);
    border: 1px solid rgba(255, 42, 95, 0.25);
    color: #ff2a5f;
    font-weight: 700;
    font-size: 0.85rem;
}

.btn-fav-browse {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-secondary), #4f46e5);
    color: #fff;
    font-weight: 700;
    font-size: 0.92rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
    transition: all 0.2s ease;
}

.btn-fav-browse:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(124, 58, 237, 0.5);
    color: #fff;
}

.search-empty-icon {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: 16px;
}

/* Light Mode Support for Vault Empty State */
.page-home .no-results-msg {
    background: rgba(79, 70, 229, 0.03);
    border-color: rgba(79, 70, 229, 0.18);
}

.page-home .no-results-msg h3 {
    color: #1a2744;
}

.page-home .fav-empty-text {
    color: #3a4e74;
}

/* Game Card in Vault */
.vcard {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    aspect-ratio: 1;
    position: relative;
    transition: var(--transition);
}

.vcard:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
    box-shadow: 0 6px 20px rgba(13, 242, 254, 0.15);
}

.vcard-img-wrap {
    flex-grow: 1;
    position: relative;
    overflow: hidden;
    background: #090b11;
}

.vcard img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.vcard:hover img {
    transform: scale(1.05);
}

.vcard-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 10px;
}

.vcard h4 {
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
    word-break: break-word;
}

.vcard-code {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    padding: 1px 4px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.vcard-fav-btn {
    position: absolute;
    top: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    font-size: 0.7rem;
    transition: var(--transition);
    z-index: 5;
}

.vcard-fav-btn:hover {
    transform: scale(1.1);
    color: var(--color-heart);
}

.vcard-fav-btn.active {
    color: var(--color-heart);
    border-color: rgba(255, 42, 95, 0.3);
}

/* Secret Codes List View */
.vault-codes-panel {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(17, 24, 39, 0.8);
    border: var(--glass-border);
    border-radius: 16px;
    padding: 24px;
}

.codes-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.codes-title {
    font-family: var(--font-accent);
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
}

.codes-search {
    width: 240px;
    height: 36px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 0 12px;
    color: #fff;
    font-size: 0.85rem;
    outline: none;
}

.codes-search:focus {
    border-color: var(--color-accent);
}

.codes-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 500px;
    overflow-y: auto;
    padding-right: 8px;
}

.code-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 12px;
}

.code-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(13, 242, 254, 0.35);
    transform: translateX(3px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.code-item-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex: 1;
}

.code-item-thumb {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    object-fit: cover;
    background: #111827;
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.code-item-name {
    font-weight: 600;
    font-size: 0.92rem;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.code-item-val {
    font-family: var(--font-mono);
    font-size: 0.88rem;
    font-weight: 800;
    color: var(--color-accent);
    background: rgba(13, 242, 254, 0.1);
    border: 1px solid rgba(13, 242, 254, 0.25);
    padding: 3px 10px;
    border-radius: 6px;
    flex-shrink: 0;
    letter-spacing: 0.05em;
}

/* Vault Play View Layout */
.vault-play-view {
    flex-grow: 1;
    overflow: hidden;
}

.vault-split {
    display: grid;
    grid-template-columns: 200px 1fr 200px;
    height: 100%;
    background-color: var(--bg-app);
}

.vault-side-left,
.vault-side-right {
    background: rgba(10, 12, 18, 0.95);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 8px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
}

.vault-side-right {
    border-right: none;
    border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.vault-side-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 0 8px;
}

/* Sidebar Small Game Cards */
.side-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    aspect-ratio: 1.5;
    position: relative;
    transition: var(--transition);
}

.side-card:hover {
    border-color: var(--color-accent);
}

.side-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.side-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 80%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 6px;
}

.side-card h5 {
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
}

/* Play View Workspace */
.vault-main-frame {
    display: flex;
    flex-direction: column;
    background: #000;
    overflow: hidden;
}

.vault-frame-header {
    height: 48px;
    background: rgba(17, 24, 39, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 10;
}

.vault-play-title {
    font-family: var(--font-accent);
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
}

.vault-frame-btns {
    display: flex;
    align-items: center;
    gap: 8px;
}

.vault-play-fav-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.02);
    color: rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.vault-play-fav-btn:hover {
    color: var(--color-heart);
    background: rgba(255, 255, 255, 0.05);
}

.vault-play-fav-btn.active {
    color: var(--color-heart);
    border-color: rgba(255, 42, 95, 0.3);
}

.vault-fs-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.vault-fs-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

/* Gameplay Frame iframe */
#vault-iframe {
    flex-grow: 1;
    width: 100%;
    height: 100%;
    border: none;
    outline: none;
}

/* Game Splash Overlay inside play view */
.vault-splash {
    position: absolute;
    inset: 0;
    background: #0a0c10;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.vsplash-bg {
    position: absolute;
    inset: 0;
    display: flex;
    gap: 10px;
    opacity: 0.12;
    filter: blur(20px) saturate(1.5);
}

.vsplash-bg-img {
    flex: 1;
    height: 100%;
    object-fit: cover;
}

.vsplash-bg-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(10, 12, 16, 0.2) 0%, rgba(10, 12, 16, 1) 90%);
}

.vault-splash-inner {
    width: 100%;
    max-width: 720px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    padding: 40px;
    z-index: 10;
}

.vault-splash-title {
    font-family: var(--font-accent);
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}

.vault-splash-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

.vault-splash-cta {
    margin-top: 24px;
}

.vault-splash-play-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: #000;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(13, 242, 254, 0.3);
    transition: all 0.2s ease;
}

.vault-splash-play-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 25px rgba(13, 242, 254, 0.5);
}

.vault-splash-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.vault-splash-stack {
    position: relative;
    width: 100%;
    aspect-ratio: 1.2;
}

.vault-splash-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 10px;
    box-shadow: var(--shadow-main);
    transform: rotate(3deg);
    transition: var(--transition);
}

.vault-splash-card img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
}

/* Spinner Loader */
.vault-ad-loader {
    position: absolute;
    inset: 0;
    background: #000;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vault-ad-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid rgba(255, 255, 255, 0.05);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ==========================================================================
   Scientific Calculator & Panic Mode (Stealth Math Solver) Styles
   ========================================================================== */

.panic-container {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background-color: #030712;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    overflow-y: auto;
    animation: fadeIn 0.2s ease-out;
}

.vault-overlay.vault-light .panic-container {
    background-color: #f0f7ff;
}

.panic-header {
    width: 100%;
    max-width: 400px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.panic-title {
    font-family: var(--font-accent);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--color-accent);
    text-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.3);
    display: flex;
    align-items: center;
    gap: 8px;
}

.vault-overlay.vault-light .panic-title {
    color: #4f46e5;
    text-shadow: none;
}

.panic-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-panic-home {
    padding: 7px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.82rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #f3f4f6;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-panic-home:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
    transform: translateY(-1px);
}

.vault-overlay.vault-light .btn-panic-home {
    background: #ffffff;
    border: 1.5px solid #c7dcf7;
    color: #1a2744;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.08);
}

.vault-overlay.vault-light .btn-panic-home:hover {
    background: #eef4ff;
    border-color: #4f46e5;
    color: #4f46e5;
}

.btn-resume-game {
    padding: 7px 14px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.82rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: #000;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 14px rgba(var(--color-accent-rgb), 0.3);
    transition: all 0.2s ease;
}

.vault-overlay.vault-light .btn-resume-game {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.btn-resume-game:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(var(--color-accent-rgb), 0.5);
}

.calc-device-frame {
    width: 100%;
    max-width: 400px;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 22px;
    padding: 14px 16px;
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.8);
}

.vault-overlay.vault-light .calc-device-frame {
    background: #ffffff;
    border: 2px solid #c7dcf7;
    box-shadow: 0 16px 40px rgba(79, 70, 229, 0.15);
}

.panic-container .calc-display-wrap {
    padding: 10px 14px;
    margin-bottom: 10px;
    border-radius: 12px;
}

.panic-container .calc-display {
    font-size: 1.5rem;
}

.panic-container .calc-grid {
    gap: 6px;
}

.panic-container .cbtn {
    padding: 8px 4px;
    font-size: 0.85rem;
    border-radius: 8px;
}

.panic-container .calc-btn-eq {
    margin-top: 8px;
    padding: 10px;
    font-size: 1.1rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes typingPulse {

    0%,
    100% {
        opacity: 0.4;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-6px);
    }

    40%,
    80% {
        transform: translateX(6px);
    }
}

/* Mobile & Responsive Layouts */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-badge {
        align-self: center;
    }

    .hero-title {
        font-size: 2.6rem;
    }

    .hero-description {
        margin: 0 auto;
    }

    .hero-action-group {
        justify-content: center;
    }

    .hero-feature-tags {
        justify-content: center;
    }

    .hero-stats-bar {
        justify-content: center;
    }

    .hero-calculator-col {
        width: 100%;
        max-width: 480px;
        margin: 0 auto;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .vault-split {
        grid-template-columns: 1fr;
    }

    .vault-side-left,
    .vault-side-right {
        display: none;
    }
}

@media (max-width: 880px) {
    .desktop-nav {
        display: none !important;
    }

    .nav-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.12);
        color: #fff;
        font-size: 1.15rem;
        cursor: pointer;
    }

    .page-home .nav-toggle {
        background: var(--ph-surface-2);
        border-color: var(--ph-border);
        color: var(--ph-text);
    }

    .header-cta-btn {
        display: none !important;
    }

    .vault-esc-hint {
        display: none !important;
    }

    .main-nav {
        display: flex !important;
        position: fixed !important;
        top: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 300px !important;
        max-width: 85vw !important;
        background: #090d16 !important;
        border-left: 1px solid rgba(255, 255, 255, 0.12) !important;
        flex-direction: column !important;
        padding: 20px !important;
        gap: 20px !important;
        z-index: 99999 !important;
        transform: translateX(105%) !important;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s !important;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.7) !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }

    .page-home .main-nav {
        background: #ffffff !important;
        border-left: 2px solid var(--ph-border) !important;
        box-shadow: -10px 0 40px rgba(79, 70, 229, 0.15) !important;
    }

    .main-nav.open {
        transform: translateX(0) !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }

    .mobile-drawer-header {
        display: flex !important;
        align-items: center !important;
        justify-content: space-between !important;
        padding-bottom: 16px !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    }

    .page-home .mobile-drawer-header {
        border-bottom-color: var(--ph-border) !important;
    }

    .drawer-brand {
        display: flex !important;
        align-items: center !important;
        gap: 10px !important;
        font-family: var(--font-accent) !important;
        font-weight: 800 !important;
        font-size: 1.15rem !important;
        color: #fff !important;
        text-decoration: none !important;
    }

    .page-home .drawer-brand {
        color: var(--ph-text) !important;
    }

    .nav-close {
        width: 36px !important;
        height: 36px !important;
        border-radius: 10px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background: rgba(255, 255, 255, 0.06) !important;
        border: 1px solid rgba(255, 255, 255, 0.1) !important;
        color: #9ca3af !important;
        cursor: pointer !important;
        font-size: 1.1rem !important;
        transition: all 0.2s ease !important;
    }

    .nav-close:hover {
        background: rgba(255, 255, 255, 0.12) !important;
        color: #fff !important;
    }

    .page-home .nav-close {
        background: var(--ph-surface-2) !important;
        border-color: var(--ph-border) !important;
        color: var(--ph-text) !important;
    }

    .mobile-nav-links {
        display: flex !important;
        flex-direction: column !important;
        gap: 8px !important;
        flex: 1 !important;
    }

    .mobile-nav-links .nav-link {
        display: flex !important;
        align-items: center !important;
        gap: 14px !important;
        padding: 12px 16px !important;
        border-radius: 12px !important;
        font-size: 1rem !important;
        font-weight: 600 !important;
        color: #9ca3af !important;
        text-decoration: none !important;
        background: rgba(255, 255, 255, 0.02) !important;
        border: 1px solid transparent !important;
        transition: all 0.2s ease !important;
    }

    .mobile-nav-links .nav-link i {
        font-size: 1.1rem !important;
        width: 22px !important;
        text-align: center !important;
    }

    .mobile-nav-links .nav-link:hover {
        background: rgba(255, 255, 255, 0.06) !important;
        color: #ffffff !important;
        transform: translateX(3px) !important;
    }

    .mobile-nav-links .nav-link.active {
        background: rgba(13, 242, 254, 0.12) !important;
        border-color: rgba(13, 242, 254, 0.3) !important;
        color: #0df2fe !important;
        box-shadow: 0 4px 14px rgba(13, 242, 254, 0.15) !important;
    }

    .page-home .mobile-nav-links .nav-link {
        color: var(--ph-text-2) !important;
        background: var(--ph-surface-2) !important;
    }

    .page-home .mobile-nav-links .nav-link:hover {
        background: rgba(79, 70, 229, 0.08) !important;
        color: var(--ph-accent) !important;
    }

    .page-home .mobile-nav-links .nav-link.active {
        background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
        color: #ffffff !important;
        border-color: transparent !important;
        box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25) !important;
    }

    .mobile-drawer-footer {
        padding-top: 16px !important;
        border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
    }

    .page-home .mobile-drawer-footer {
        border-top-color: var(--ph-border) !important;
    }

    .mobile-explore-btn {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 8px !important;
        width: 100% !important;
        padding: 12px !important;
        border-radius: 12px !important;
        font-weight: 700 !important;
        font-size: 0.95rem !important;
        background: linear-gradient(135deg, var(--color-accent), var(--color-secondary)) !important;
        color: #000 !important;
        text-decoration: none !important;
        box-shadow: 0 4px 14px rgba(var(--color-accent-rgb), 0.3) !important;
    }

    .page-home .mobile-explore-btn {
        background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
        color: #fff !important;
        box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25) !important;
    }

    .nav-scrim {
        position: fixed !important;
        inset: 0 !important;
        background: rgba(0, 0, 0, 0.65) !important;
        backdrop-filter: blur(6px) !important;
        -webkit-backdrop-filter: blur(6px) !important;
        z-index: 99998 !important;
        opacity: 0 !important;
        pointer-events: none !important;
        transition: opacity 0.25s ease !important;
    }

    .nav-scrim.show {
        opacity: 1 !important;
        pointer-events: auto !important;
    }

    .trust-list {
        justify-content: center;
        gap: 24px;
    }

    .vault-cat-sidebar {
        position: absolute;
        left: 0;
        top: 56px;
        bottom: 0;
        z-index: 10;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }

    .vault-cat-sidebar.mobile-open {
        transform: translateX(0);
    }
}

@media (max-width: 480px) {
    .page-wrap {
        padding: 24px 16px;
    }

    .hero-section {
        padding: 20px 0 40px 0;
    }

    .hero-badge {
        font-size: 0.78rem;
        padding: 5px 12px;
        gap: 6px;
        max-width: 100%;
    }

    .section-head h2 {
        font-size: 1.6rem;
    }

    .hero-title {
        font-size: clamp(1.85rem, 7vw, 2.2rem);
        line-height: 1.2;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-action-group {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .btn-hero-primary,
    .btn-hero-ghost {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
    }

    .hero-feature-tags {
        gap: 6px;
    }

    .feature-tag {
        font-size: 0.75rem;
        padding: 4px 10px;
    }

    .hero-stats-bar {
        flex-wrap: wrap;
        gap: 16px;
        justify-content: space-around;
    }

    .stat-divider {
        display: none;
    }

    .calc-card-glass {
        padding: 14px 12px;
        border-radius: 20px;
    }

    .floating-math-doodles {
        display: none;
    }

    #chatbot-widget {
        bottom: 16px;
        right: 16px;
    }

    #toggle-btn {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    #chatbot-window {
        position: fixed;
        bottom: 76px;
        left: 12px;
        right: 12px;
        width: auto;
        max-width: 390px;
        margin: 0 auto;
        height: min(440px, calc(100dvh - 96px));
        transform-origin: bottom center;
        z-index: 95;
    }
}

/* ==========================================================================
   PAGE-HOME  —  Child-Centric Light Mode
   Applies ONLY when <body class="page-home"> is set
   ========================================================================== */

/* ── Colour tokens for the light theme ── */
.page-home {
    --ph-bg: #f0f7ff;
    --ph-surface: #ffffff;
    --ph-surface-2: #eef4ff;
    --ph-border: #c7dcf7;
    --ph-text: #1a2744;
    --ph-text-2: #3a4e74;
    --ph-muted: #6580a4;
    --ph-accent: #4f46e5;
    --ph-accent-2: #7c3aed;
    --ph-green: #16a34a;
    --ph-orange: #ea580c;
    --ph-yellow: #d97706;
    --ph-red: #dc2626;
    --ph-shadow: 0 4px 24px rgba(79, 70, 229, .10);
    /* map generic vars used in tool pages */
    --surface: #ffffff;
    --surface-2: #eef4ff;
    --border: #c7dcf7;
    --text: #1a2744;
    --text-muted: #6580a4;
    --accent: #4f46e5;
}

/* ── Page body ── */
.page-home {
    background: linear-gradient(160deg, #eef4ff 0%, #f5f0ff 50%, #fef9ee 100%);
    color: var(--ph-text);
    min-height: 100vh;
}

/* ── Scrollbar ── */
.page-home ::-webkit-scrollbar-track {
    background: var(--ph-surface-2);
}

.page-home ::-webkit-scrollbar-thumb {
    background: var(--ph-border);
}

/* ══════════════════ HEADER (PAGE-HOME LIGHT THEME) ══════════════════ */
.page-home .site-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1.5px solid var(--ph-border);
    box-shadow: 0 2px 18px rgba(79, 70, 229, 0.08);
}

.page-home .brand-name {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.28rem;
    font-weight: 800;
}

.page-home .brand-badge {
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.2);
    color: var(--ph-accent);
}

.page-home .nav-links-wrap {
    background: rgba(79, 70, 229, 0.04);
    border: 1.5px solid rgba(79, 70, 229, 0.12);
}

.page-home .nav-link {
    color: var(--ph-text-2);
    font-weight: 600;
}

.page-home .nav-link:hover {
    color: var(--ph-accent);
    background: rgba(79, 70, 229, 0.08);
}

.page-home .nav-link.active {
    background: #ffffff;
    color: var(--ph-accent);
    border: 1px solid var(--ph-border);
    box-shadow: 0 2px 10px rgba(79, 70, 229, 0.12);
    font-weight: 700;
}

.page-home .nav-link.active i {
    color: var(--ph-accent);
}

.page-home .site-theme-btn {
    background: var(--ph-surface-2);
    border: 1.5px solid var(--ph-border);
    color: var(--ph-text);
}

.page-home .site-theme-btn:hover {
    background: #ffffff;
    border-color: var(--ph-accent);
    color: var(--ph-accent);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

.page-home .header-cta-btn {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-accent-2));
    color: #ffffff;
    box-shadow: 0 3px 14px rgba(79, 70, 229, 0.25);
}

.page-home .header-cta-btn:hover {
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
    color: #ffffff;
}

/* ══════════════════ EYEBROWS & HEADINGS ══════════════════ */
.page-home .eyebrow {
    color: var(--ph-accent);
    font-size: .75rem;
    font-weight: 800;
    letter-spacing: .12em;
}

.page-home .section-head h2 {
    color: var(--ph-text);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -.02em;
}

.page-home .section-head h2::after {
    content: '';
    display: block;
    width: 56px;
    height: 4px;
    border-radius: 4px;
    margin-top: 8px;
    background: linear-gradient(90deg, var(--ph-accent), var(--ph-accent-2), var(--ph-orange));
}

.page-home .section-head p {
    color: var(--ph-text-2);
}

/* ══════════════════ HERO (PAGE-HOME LIGHT THEME) ══════════════════ */
.page-home .hero-section {
    padding: 28px 0 48px 0;
}

.page-home .glow-orb-1 {
    background: radial-gradient(circle, rgba(79, 70, 229, 0.16), transparent 70%);
}

.page-home .glow-orb-2 {
    background: radial-gradient(circle, rgba(234, 88, 12, 0.12), transparent 70%);
}

.page-home .glow-grid {
    background-image: radial-gradient(rgba(79, 70, 229, 0.08) 1px, transparent 1px);
}

.page-home .hero-badge {
    background: rgba(79, 70, 229, 0.08);
    border-color: rgba(79, 70, 229, 0.2);
    color: var(--ph-accent);
    box-shadow: 0 2px 10px rgba(79, 70, 229, 0.08);
    animation: bouncePill 3s ease-in-out infinite;
}

@keyframes bouncePill {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-4px);
    }
}

.page-home .badge-tag {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-home .hero-title {
    color: var(--ph-text);
}

.page-home .hero-gradient-text {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-accent-2) 45%, var(--ph-orange) 95%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-home .hero-description {
    color: var(--ph-text-2);
}

.page-home .btn-hero-primary {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-accent-2));
    color: #ffffff;
    box-shadow: 0 6px 24px rgba(79, 70, 229, 0.35);
    border: none;
}

.page-home .btn-hero-primary:hover {
    box-shadow: 0 10px 32px rgba(79, 70, 229, 0.5);
    transform: translateY(-2px);
    color: #ffffff;
}

.page-home .btn-hero-ghost {
    background: #ffffff;
    border: 2px solid var(--ph-border);
    color: var(--ph-text);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.06);
}

.page-home .btn-hero-ghost:hover {
    border-color: var(--ph-accent);
    color: var(--ph-accent);
    background: var(--ph-surface-2);
    transform: translateY(-2px);
}

.page-home .feature-tag {
    background: #ffffff;
    border: 1.5px solid var(--ph-border);
    color: var(--ph-text-2);
    box-shadow: 0 1px 4px rgba(79, 70, 229, 0.04);
}

.page-home .feature-tag i {
    color: var(--ph-accent);
}

.page-home .hero-stats-bar {
    border-top: 2px solid var(--ph-border);
}

.page-home .stat-number {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-home .stat-label {
    color: var(--ph-muted);
}

.page-home .stat-divider {
    background: var(--ph-border);
}

.page-home .calc-card-glass {
    background: #ffffff;
    border: 2px solid var(--ph-border);
    box-shadow: 0 16px 40px -10px rgba(79, 70, 229, 0.15), 0 0 0 6px rgba(79, 70, 229, 0.03);
}

.page-home .calc-card-glass:hover {
    box-shadow: 0 20px 48px -10px rgba(79, 70, 229, 0.22), 0 0 0 8px rgba(79, 70, 229, 0.05);
}

.page-home .calc-top-bar {
    border-bottom: 2px solid var(--ph-surface-2);
}

.page-home .calc-badge-title {
    color: var(--ph-text-2);
}

.page-home .calc-footer-hint {
    color: var(--ph-muted);
}

.page-home .hero-math-doodle {
    color: rgba(79, 70, 229, 0.18);
}

/* ══════════════════ TRUST STRIP ══════════════════ */
.page-home .trust-strip {
    background: white;
    border-top: 2px solid var(--ph-border);
    border-bottom: 2px solid var(--ph-border);
}

.page-home .trust-name {
    color: var(--ph-text);
    font-weight: 700;
}

.page-home .trust-sub {
    color: var(--ph-muted);
}

/* ══════════════════ CALCULATOR ══════════════════ */
.page-home .device-frame {
    background: white;
    border: 2px solid var(--ph-border);
    box-shadow: var(--ph-shadow), 0 0 0 6px rgba(79, 70, 229, .05);
    border-radius: 28px;
}

.page-home .calc-display-wrap {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: 16px;
    border: none;
}

.page-home .calc-expr {
    color: #6b7db3;
}

.page-home .calc-display {
    color: #e8f4fd;
}

.page-home .code-toggle-label {
    color: #475569 !important;
    font-weight: 700;
}

.page-home .code-toggle-track {
    background: #e2e8f0 !important;
    border: 1.5px solid #cbd5e1 !important;
}

.page-home .code-toggle-thumb {
    background: #64748b !important;
}

.page-home .code-toggle-input:checked + .code-toggle-track {
    background: #4f46e5 !important;
    border-color: #4f46e5 !important;
}

.page-home .code-toggle-input:checked + .code-toggle-track .code-toggle-thumb {
    background: #ffffff !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2) !important;
}

.page-home .code-toggle-input:checked ~ .code-toggle-label {
    color: #4f46e5 !important;
}

.page-home .cbtn {
    background: var(--ph-surface-2);
    border: 2px solid var(--ph-border);
    color: var(--ph-text);
    border-radius: 12px;
    font-weight: 700;
}

.page-home .cbtn:hover {
    background: var(--ph-accent);
    border-color: var(--ph-accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, .25);
}

.page-home .cbtn:active {
    transform: scale(.93);
}

.page-home .cbtn-fn {
    background: rgba(79, 70, 229, .06);
    border-color: rgba(79, 70, 229, .15);
    color: var(--ph-accent);
}

.page-home .cbtn-cl {
    background: rgba(220, 38, 38, .05);
    border-color: rgba(220, 38, 38, .15);
    color: var(--ph-red);
}

.page-home .cbtn-op {
    background: rgba(234, 88, 12, .05);
    border-color: rgba(234, 88, 12, .15);
    color: var(--ph-orange);
}

.page-home .cbtn-num {
    background: white;
    color: var(--ph-text);
}

.page-home .cbtn-eq {
    background: linear-gradient(135deg, var(--ph-accent), var(--ph-accent-2));
    border-color: transparent;
    color: white;
    font-weight: 900;
    box-shadow: 0 4px 16px rgba(79, 70, 229, .35);
}

.page-home .cbtn-eq:hover {
    color: white;
    box-shadow: 0 6px 22px rgba(79, 70, 229, .5);
}

/* ══════════════════ TOOL CARDS ══════════════════ */
.page-home .tool-card-link {
    background: white;
    border: 2px solid var(--ph-border);
    border-radius: 20px;
    padding: 28px 22px;
    min-height: 200px;
    box-shadow: 0 2px 12px rgba(79, 70, 229, .06);
    transition: all .2s cubic-bezier(.4, 0, .2, 1);
    position: relative;
    overflow: hidden;
}

.page-home .tool-card-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--ph-accent), var(--ph-accent-2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s ease;
    border-radius: 4px 4px 0 0;
}

.page-home .tool-card-link:hover::before {
    transform: scaleX(1);
}

.page-home .tool-card-link:hover {
    transform: translateY(-6px);
    border-color: rgba(79, 70, 229, .3);
    box-shadow: 0 12px 32px rgba(79, 70, 229, .14);
}

.page-home .tool-card-link:hover .tool-icon {
    animation: wiggle .4s ease;
}

@keyframes wiggle {
    0% {
        transform: rotate(0);
    }

    25% {
        transform: rotate(-8deg);
    }

    50% {
        transform: rotate(8deg);
    }

    75% {
        transform: rotate(-4deg);
    }

    100% {
        transform: rotate(0);
    }
}

.page-home .tool-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    font-size: 1.4rem;
    margin-bottom: 18px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .15);
}

.page-home .tool-card-link h3 {
    color: var(--ph-text);
    font-size: 1.05rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.page-home .tool-card-link p {
    color: var(--ph-text-2);
    font-size: .88rem;
    line-height: 1.55;
    margin-bottom: 16px;
}

.page-home .tool-tag {
    background: var(--ph-surface-2);
    color: var(--ph-accent);
    border: 1px solid rgba(79, 70, 229, .15);
    padding: 3px 10px;
    border-radius: 999px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
}

/* ══════════════════ BLOG CARDS ══════════════════ */
.page-home .post-card {
    background: white;
    border: 2px solid var(--ph-border);
    border-radius: 20px;
    box-shadow: 0 2px 12px rgba(79, 70, 229, .06);
}

.page-home .post-card:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 70, 229, .25);
    box-shadow: 0 10px 28px rgba(79, 70, 229, .12);
}

.page-home .post-cat {
    color: var(--ph-accent);
}

.page-home .post-card h3 {
    color: var(--ph-text);
    font-weight: 800;
}

.page-home .post-card p {
    color: var(--ph-text-2);
}

.page-home .post-meta {
    color: var(--ph-muted);
}

/* ══════════════════ FEATURE CARDS ══════════════════ */
.page-home .feature {
    background: white !important;
    border-left-width: 4px !important;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(79, 70, 229, .07);
    padding: 28px;
}

.page-home .feature h3 {
    color: var(--ph-text);
    font-weight: 800;
}

.page-home .feature p {
    color: var(--ph-text-2);
}

/* ══════════════════ FAQ ══════════════════ */
.page-home .faq-item {
    background: white;
    border: 2px solid var(--ph-border);
    border-radius: 14px;
}

.page-home .faq-item[open] {
    border-color: rgba(79, 70, 229, .3);
    box-shadow: 0 4px 16px rgba(79, 70, 229, .08);
}

.page-home .faq-item summary {
    color: var(--ph-text);
    font-weight: 700;
}

.page-home .faq-item summary::after {
    color: var(--ph-accent);
}

.page-home .faq-item p {
    color: var(--ph-text-2);
    border-top-color: var(--ph-border);
}

/* ══════════════════ FOOTER ══════════════════ */
.page-home .site-footer {
    background: #1a2744;
    border-top: 3px solid var(--ph-border);
}

.page-home .footer-col p {
    color: #8fa3c8;
}

.page-home .footer-bottom {
    color: #6580a4;
    border-top-color: rgba(255, 255, 255, .08);
}




/* ==========================================================================
   THEME TOGGLE BUTTON (site header)
   ========================================================================== */

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-theme-btn {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 2px solid var(--ph-border, rgba(255, 255, 255, .08));
    background: rgba(255, 255, 255, .06);
    color: var(--ph-text, #f3f4f6);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s ease;
}

/* In light mode the button has a light border */
.page-home .site-theme-btn {
    background: white;
    border-color: var(--ph-border);
    color: var(--ph-text);
    box-shadow: 0 2px 8px rgba(79, 70, 229, .08);
}

.page-home .site-theme-btn:hover {
    background: var(--ph-accent);
    border-color: var(--ph-accent);
    color: white;
    transform: rotate(12deg) scale(1.05);
}

/* In dark mode */
.page-dark .site-theme-btn {
    background: rgba(255, 255, 255, .04);
    border-color: rgba(255, 255, 255, .1);
    color: #f3f4f6;
}

.page-dark .site-theme-btn:hover {
    background: rgba(255, 255, 255, .12);
    color: #fbbf24;
    transform: rotate(12deg) scale(1.05);
}

/* Vault topbar theme button polish */
#vault-theme-btn {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==========================================================================
   PAGE-DARK  —  Full dark mode for homepage
   Mirrors the original dark design variables
   ========================================================================== */

.page-dark {
    background-color: #030712;
    background-image:
        radial-gradient(ellipse 900px 600px at 15% 15%, rgba(124, 58, 237, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 700px 500px at 85% 20%, rgba(13, 242, 254, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse 1000px 800px at 50% 60%, rgba(15, 23, 42, 0.8) 0%, transparent 100%);
    background-attachment: fixed;
    color: #f3f4f6;
    min-height: 100vh;
}

.page-dark .site-header {
    background: rgba(3, 7, 18, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.page-dark .brand-name {
    background: linear-gradient(135deg, #ffffff, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.25rem;
}

.page-dark .brand-badge {
    background: rgba(124, 58, 237, 0.18);
    border-color: rgba(124, 58, 237, 0.35);
    color: #c084fc;
}

.page-dark .nav-links-wrap {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
}

.page-dark .nav-link {
    color: #9ca3af;
}

.page-dark .nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.page-dark .nav-link.active {
    background: rgba(124, 58, 237, 0.25);
    border-color: rgba(124, 58, 237, 0.4);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(124, 58, 237, 0.25);
}

.page-dark .site-theme-btn {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.12);
    color: #f3f4f6;
}

.page-dark .site-theme-btn:hover {
    border-color: #a78bfa;
    color: #a78bfa;
}

.page-dark .header-cta-btn {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    color: #ffffff;
}

.page-dark .eyebrow {
    color: #7c3aed;
}

.page-dark .section-head h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
}

.page-dark .section-head h2::after {
    display: none;
}

.page-dark .section-head p {
    color: #9ca3af;
}

/* Hero (Dark Mode) */
.page-dark .hero-section {
    padding: 36px 0 56px 0;
}

.page-dark .hero-badge {
    background: rgba(124, 58, 237, 0.15);
    border-color: rgba(124, 58, 237, 0.3);
    color: #a78bfa;
    box-shadow: 0 0 16px rgba(124, 58, 237, 0.2);
}

.page-dark .hero-title {
    color: #ffffff;
}

.page-dark .hero-gradient-text {
    background: linear-gradient(135deg, #c084fc, #38bdf8 50%, #f472b6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-dark .hero-description {
    color: #9ca3af;
}

.page-dark .btn-hero-primary {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 24px rgba(124, 58, 237, 0.4);
}

.page-dark .btn-hero-primary:hover {
    box-shadow: 0 8px 30px rgba(124, 58, 237, 0.6);
    transform: translateY(-2px);
}

.page-dark .btn-hero-ghost {
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #f3f4f6;
    background: rgba(255, 255, 255, 0.03);
}

.page-dark .btn-hero-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    color: #ffffff;
    transform: translateY(-2px);
}

.page-dark .feature-tag {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
    color: #9ca3af;
}

.page-dark .hero-stats-bar {
    border-top-color: rgba(255, 255, 255, 0.08);
}

.page-dark .stat-number {
    color: #ffffff;
    background: none;
    -webkit-text-fill-color: #ffffff;
}

.page-dark .stat-label {
    color: #6b7280;
}

.page-dark .stat-divider {
    background: rgba(255, 255, 255, 0.08);
}

.page-dark .calc-card-glass {
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.6);
}

.page-dark .hero-math-doodle {
    color: rgba(124, 58, 237, 0.2);
}

/* Trust strip */
.page-dark .trust-strip {
    background: rgba(255, 255, 255, .01);
    border-top-color: rgba(255, 255, 255, .05);
    border-bottom-color: rgba(255, 255, 255, .05);
}

.page-dark .trust-name {
    color: #fff;
}

.page-dark .trust-sub {
    color: #6b7280;
}

/* Calculator */
.page-dark .device-frame {
    background: rgba(15, 18, 28, .8);
    border: 1px solid rgba(255, 255, 255, .08);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .7);
    border-radius: 24px;
}

.page-dark .calc-display-wrap {
    background: #090a0f;
    border: 1px solid rgba(255, 255, 255, .05);
    border-radius: 12px;
}

.page-dark .calc-expr {
    color: #6b7280;
}

.page-dark .calc-display {
    color: #fff;
}

.page-dark .cbtn {
    background: rgba(255, 255, 255, .02);
    border: 1px solid rgba(255, 255, 255, .05);
    color: #f3f4f6;
    border-radius: 10px;
    font-weight: 600;
}

.page-dark .cbtn:hover {
    background: rgba(255, 255, 255, .08);
    border-color: #0df2fe;
    color: #0df2fe;
    box-shadow: none;
    transform: none;
}

.page-dark .cbtn-fn {
    color: #0df2fe;
    background: rgba(13, 242, 254, .04);
}

.page-dark .cbtn-cl {
    color: #ff2a5f;
    background: rgba(255, 42, 95, .04);
}

.page-dark .cbtn-op {
    color: #f59e0b;
    background: rgba(245, 158, 11, .04);
}

.page-dark .cbtn-num {
    color: #f3f4f6;
    background: rgba(255, 255, 255, .02);
}

.page-dark .cbtn-eq {
    background: linear-gradient(135deg, #0df2fe, #7c3aed);
    color: #000;
    font-weight: 800;
    box-shadow: none;
}

/* Tool cards */
.page-dark .tool-card-link {
    background: rgba(17, 24, 39, .7);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 16px;
    padding: 24px;
    min-height: unset;
    box-shadow: none;
}

.page-dark .tool-card-link::before {
    display: none;
}

.page-dark .tool-card-link:hover {
    border-color: #7c3aed;
    background: rgba(17, 24, 39, .9);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .7);
    transform: translateY(-3px);
}

.page-dark .tool-card-link:hover .tool-icon {
    animation: none;
}

.page-dark .tool-card-link h3 {
    color: #fff;
    font-size: 1.15rem;
    font-weight: 700;
}

.page-dark .tool-card-link p {
    color: #9ca3af;
    font-size: .85rem;
}

.page-dark .tool-tag {
    background: none;
    border: none;
    color: #6b7280;
    padding: 0;
    border-radius: 0;
}

/* Blog cards */
.page-dark .post-card {
    background: rgba(17, 24, 39, .7);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 16px;
}

.page-dark .post-card:hover {
    border-color: rgba(255, 255, 255, .15);
    background: rgba(17, 24, 39, .9);
    transform: none;
    box-shadow: none;
}

.page-dark .post-cat {
    color: #0df2fe;
}

.page-dark .post-card h3 {
    color: #fff;
}

.page-dark .post-card p {
    color: #9ca3af;
}

.page-dark .post-meta {
    color: #6b7280;
}

/* Features */
.page-dark .feature {
    background: rgba(17, 24, 39, .5) !important;
    border-left-color: rgba(255, 255, 255, .05) !important;
    border-radius: 16px;
    box-shadow: none;
}

.page-dark .feature h3 {
    color: #fff;
}

.page-dark .feature p {
    color: #9ca3af;
}

/* FAQ */
.page-dark .faq-item {
    background: rgba(17, 24, 39, .7);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 12px;
}

.page-dark .faq-item[open] {
    border-color: rgba(255, 255, 255, .15);
}

.page-dark .faq-item summary {
    color: #fff;
}

.page-dark .faq-item summary::after {
    color: #6b7280;
}

.page-dark .faq-item p {
    color: #9ca3af;
    border-top-color: rgba(255, 255, 255, .05);
}

/* Footer */
.page-dark .site-footer {
    background: #02040a;
    border-top-color: rgba(255, 255, 255, .05);
}

.page-dark .footer-col p {
    color: #9ca3af;
}

.page-dark .footer-bottom {
    color: #6b7280;
    border-top-color: rgba(255, 255, 255, .05);
}



/* ==========================================================================
   VAULT OVERLAY — Light Mode  (.vault-light on #vault-overlay)
   Only the vault-overlay element gets this class, not the body.
   This means the dark game sidebar/grid can be selectively lightened.
   ========================================================================== */

.vault-overlay.vault-light {
    background-color: #f0f7ff;
}

.vault-overlay.vault-light .vault-topbar {
    background: rgba(255, 255, 255, .95);
    border-bottom-color: #c7dcf7;
    box-shadow: 0 2px 12px rgba(79, 70, 229, .08);
}

.vault-overlay.vault-light .vault-topbar-btn {
    background: white;
    border-color: #c7dcf7;
    color: #1a2744;
}

.vault-overlay.vault-light .vault-topbar-btn:hover {
    background: #4f46e5;
    border-color: #4f46e5;
    color: white;
}

.vault-overlay.vault-light .vault-sidebar-toggle {
    background: white;
    border-color: #c7dcf7;
    color: #1a2744;
}

.vault-overlay.vault-light .vault-cat-sidebar {
    background: white;
    border-right-color: #c7dcf7;
}

.vault-overlay.vault-light .vault-cat-link {
    color: #3a4e74;
}

.vault-overlay.vault-light .vault-cat-link:hover {
    background: #eef4ff;
    color: #1a2744;
}

.vault-overlay.vault-light .vault-cat-link.active {
    background: rgba(79, 70, 229, .08);
    color: #4f46e5;
    border-left-color: #4f46e5;
}

.vault-overlay.vault-light .vault-cat-exit-btn {
    color: #6580a4;
}

.vault-overlay.vault-light .vault-cat-exit-btn:hover {
    background: rgba(220, 38, 38, .05);
    color: #dc2626;
}

.vault-overlay.vault-light .vault-main-area {
    background: #f0f7ff;
}

.vault-overlay.vault-light .vcard {
    background: white;
    border-color: #c7dcf7;
    box-shadow: 0 2px 8px rgba(79, 70, 229, .06);
}

.vault-overlay.vault-light .vcard:hover {
    border-color: rgba(79, 70, 229, .3);
    box-shadow: 0 8px 20px rgba(79, 70, 229, .12);
}

.vault-overlay.vault-light .vcard-overlay {
    background: linear-gradient(transparent, rgba(79, 70, 229, .85));
}

.vault-overlay.vault-light .vault-search {
    background: white;
    border-color: #c7dcf7;
    color: #1a2744;
}

.vault-overlay.vault-light .vault-search:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, .1);
}

.vault-overlay.vault-light .vault-search::placeholder {
    color: #6580a4;
}

.vault-overlay.vault-light .vault-body {
    background: #f0f7ff;
}

/* Vault splash in light mode */
.vault-overlay.vault-light .vault-splash {
    background: white;
    border: 2px solid #c7dcf7;
    border-radius: 20px;
}

.vault-overlay.vault-light .vault-splash-title {
    color: #1a2744;
}

.vault-overlay.vault-light .vault-splash-hint {
    color: #6580a4;
}

.vault-overlay.vault-light .vault-splash-play-btn {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
}

/* Secret codes panel light */
.vault-overlay.vault-light .vault-codes-panel {
    background: white;
    border: 2px solid #c7dcf7;
}

.vault-overlay.vault-light .codes-title {
    color: #1a2744;
}

.vault-overlay.vault-light .codes-search {
    background: #eef4ff;
    border-color: #c7dcf7;
    color: #1a2744;
}

.vault-overlay.vault-light .code-item {
    background: #eef4ff;
    border-color: #c7dcf7;
}

.vault-overlay.vault-light .code-item:hover {
    background: white;
    border-color: rgba(79, 70, 229, .35);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.12);
}

.vault-overlay.vault-light .code-item-thumb {
    background: #e2e8f0;
    border-color: #c7dcf7;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.08);
}

.vault-overlay.vault-light .code-item-name {
    color: #1a2744;
}

.vault-overlay.vault-light .code-item-val {
    color: #4f46e5;
    background: rgba(79, 70, 229, 0.08);
    border-color: rgba(79, 70, 229, 0.2);
}

/* ==========================================================================
   CalcSolver - Ultimate SEO Guide & In-Depth Content Styles
   ========================================================================== */

.seo-guide-section {
    padding: 80px 0 60px;
    position: relative;
}

.guide-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.guide-header {
    text-align: center;
    max-width: 860px;
    margin: 0 auto 12px;
}

.guide-header h2 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    margin-top: 8px;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 50%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.guide-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.guide-chapter {
    background: var(--bg-surface-solid);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: clamp(24px, 4vw, 40px);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.guide-chapter::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0df2fe, #7c3aed, #10b981);
}

.chapter-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(13, 242, 254, 0.1);
    color: #0df2fe;
    border: 1px solid rgba(13, 242, 254, 0.25);
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.guide-chapter h3 {
    font-size: clamp(1.4rem, 2.5vw, 1.85rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.guide-chapter p {
    color: #cbd5e1;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.guide-chapter p:last-child {
    margin-bottom: 0;
}

.guide-split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
}

@media (max-width: 900px) {
    .guide-split-layout {
        grid-template-columns: 1fr;
    }
}

.guide-img-card {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.6);
    background: #0b0f19;
}

.guide-img-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.guide-img-card:hover img {
    transform: scale(1.02);
}

.guide-img-caption {
    padding: 12px 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(15, 23, 42, 0.9);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    gap: 8px;
}

.guide-grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.guide-subcard {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    transition: var(--transition);
}

.guide-subcard:hover {
    border-color: rgba(13, 242, 254, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.guide-subcard-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 14px;
}

.guide-subcard h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 8px;
}

.guide-subcard p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Comparison Table */
.comparison-table-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9375rem;
    background: #0f172a;
}

.comparison-table th,
.comparison-table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.comparison-table th {
    background: #1e293b;
    color: #f8fafc;
    font-weight: 700;
}

.comparison-table th.highlight-col,
.comparison-table td.highlight-col {
    background: rgba(13, 242, 254, 0.06);
    border-left: 2px solid rgba(13, 242, 254, 0.3);
    border-right: 2px solid rgba(13, 242, 254, 0.3);
    color: #f8fafc;
    font-weight: 600;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.table-badge-yes {
    color: #10b981;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
}

.table-badge-no {
    color: #ef4444;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

/* Shortcuts Grid */
.shortcut-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.shortcut-table td {
    padding: 10px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.kbd-chip {
    display: inline-block;
    padding: 3px 8px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 700;
    color: #38bdf8;
    background: #1e293b;
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 6px;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.5);
}

/* Enhanced FAQ List */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-surface-solid);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    transition: var(--transition);
}

.faq-item[open] {
    border-color: rgba(13, 242, 254, 0.4);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.faq-item summary {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: #0df2fe;
    font-weight: 400;
    transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-item p {
    margin-top: 14px;
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.75;
}

/* ==========================================================================
   CalcSolver - Unified Tool Pages Glassmorphic Theme
   ========================================================================== */

.tool-page-wrap {
    max-width: 960px;
    margin: 32px auto 80px;
    padding: 0 24px;
    box-sizing: border-box;
}

.tool-breadcrumb {
    font-size: 0.85rem;
    color: var(--text-muted, #64748b);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-breadcrumb a {
    color: #0df2fe;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.tool-breadcrumb a:hover {
    color: #38bdf8;
    text-decoration: underline;
}

.tool-title-row {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    margin-bottom: 8px;
}

.tool-icon-lg {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(13, 242, 254, 0.18), rgba(124, 58, 237, 0.22));
    border: 1.5px solid rgba(13, 242, 254, 0.3);
    display: grid;
    place-items: center;
    color: #0df2fe;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 8px 24px rgba(13, 242, 254, 0.15);
    margin-top: 2px;
}

.tool-title-row h1 {
    font-size: clamp(1.6rem, 3.2vw, 2.2rem);
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0 0 6px;
}

.tool-desc {
    color: #94a3b8;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Guide Sections Below Tool */
.tool-guide-wrap {
    margin-top: 48px;
}

.tool-guide-head {
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 16px;
}

.tool-guide-head h2 {
    font-size: 1.4rem;
    font-weight: 800;
    color: #f8fafc;
    margin: 0 0 6px;
}

.tool-guide-head p {
    font-size: 0.95rem;
    color: #94a3b8;
    margin: 0;
}

.tool-guide-section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 18px;
    padding: 28px 32px;
    margin-bottom: 24px;
    box-sizing: border-box;
    transition: border-color 0.2s ease;
}

.tool-guide-section:hover {
    border-color: rgba(13, 242, 254, 0.25);
}

.tool-guide-section .sec-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.tool-guide-section .sec-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(13,242,254,0.15), rgba(124,58,237,0.15));
    color: #0df2fe;
    border: 1px solid rgba(13,242,254,0.25);
    flex-shrink: 0;
}

.tool-guide-section h2,
.tool-guide-section h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #f8fafc;
    margin: 0;
}

.tool-guide-section p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #94a3b8;
    margin: 0 0 12px;
}

.tool-guide-section p:last-child { margin-bottom: 0; }

.tool-guide-section ul {
    margin: 12px 0;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tool-guide-section ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.93rem;
    line-height: 1.7;
    color: #94a3b8;
}

.tool-guide-section ul li::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(13,242,254,0.1);
    color: #0df2fe;
    font-size: 0.65rem;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 3px;
}

.tool-related-bar {
    margin-top: 40px;
    padding: 24px 28px;
    background: rgba(13, 242, 254, 0.03);
    border: 1px solid rgba(13, 242, 254, 0.12);
    border-radius: 18px;
}

.tool-related-bar h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: #f8fafc;
    margin: 0 0 14px;
}

.tool-related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tool-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #0df2fe;
    background: rgba(13, 242, 254, 0.06);
    border: 1px solid rgba(13, 242, 254, 0.18);
    text-decoration: none;
    transition: all 0.2s ease;
}

.tool-chip:hover {
    background: rgba(13, 242, 254, 0.15);
    border-color: #0df2fe;
    transform: translateY(-1px);
}

.tool-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tool-tab {
    padding: 10px 20px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    font-size: 0.9375rem;
    font-weight: 700;
    cursor: pointer;
    background: rgba(15, 23, 42, 0.6);
    color: #94a3b8;
    font-family: inherit;
    transition: var(--transition);
}

.tool-tab:hover {
    color: #f1f5f9;
    border-color: rgba(13, 242, 254, 0.4);
    background: rgba(15, 23, 42, 0.9);
}

.tool-tab.active {
    background: linear-gradient(135deg, #0df2fe, #0284c7);
    color: #030712;
    border-color: #0df2fe;
    box-shadow: 0 4px 16px rgba(13, 242, 254, 0.35);
}

.tool-card {
    background: var(--bg-surface-solid);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: clamp(24px, 4vw, 36px);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0df2fe, #7c3aed, #10b981);
}

.frac-input-row {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.frac-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.frac-num-input {
    width: 80px;
    padding: 10px 8px;
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    text-align: center;
    font-family: var(--font-mono);
    background: #0b0f19;
    color: #f8fafc;
    transition: var(--transition);
}

.frac-num-input:focus {
    outline: none;
    border-color: #0df2fe;
    box-shadow: 0 0 16px rgba(13, 242, 254, 0.3);
}

.frac-line {
    width: 80px;
    height: 2px;
    background: #475569;
    border-radius: 2px;
}

.frac-label {
    color: var(--text-muted);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-input-row {
    display: flex;
    gap: 14px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.tool-input {
    flex: 1;
    min-width: 200px;
    padding: 12px 18px;
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    font-size: 1.1rem;
    font-family: var(--font-mono);
    background: #0b0f19;
    color: #f8fafc;
    transition: var(--transition);
}

.tool-input:focus {
    outline: none;
    border-color: #0df2fe;
    box-shadow: 0 0 16px rgba(13, 242, 254, 0.3);
}

.tool-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #0df2fe, #0284c7);
    color: #030712;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 16px rgba(13, 242, 254, 0.35);
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(13, 242, 254, 0.5);
    filter: brightness(1.05);
}

.tool-steps-box {
    margin-top: 24px;
    padding: 20px;
    background: rgba(13, 242, 254, 0.05);
    border: 1px solid rgba(13, 242, 254, 0.2);
    border-radius: 14px;
}

.tool-steps-box h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #0df2fe;
    margin-bottom: 16px;
}

.tool-step-item {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    align-items: flex-start;
    font-size: 0.95rem;
    color: #cbd5e1;
}

.tool-step-n {
    background: #0df2fe;
    color: #030712;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    font-size: 0.8125rem;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 2px;
}

.tool-result-big {
    font-size: 2.2rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: #0df2fe;
    margin: 16px 0 6px;
    text-shadow: 0 0 20px rgba(13, 242, 254, 0.4);
}

.tool-result-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Universal Tool Page Card & Component Styling */
.tool-page-wrap .card {
    background: var(--bg-surface-solid) !important;
    border: var(--glass-border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6) !important;
    color: var(--text-primary) !important;
    padding: clamp(20px, 3.5vw, 32px) !important;
    position: relative;
    overflow: hidden;
}

.tool-page-wrap .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0df2fe, #7c3aed, #10b981);
}

.tool-page-wrap input,
.tool-page-wrap .frac-in,
.tool-page-wrap .q-frac-in,
.tool-page-wrap .num-input,
.tool-page-wrap .dec-input,
.tool-page-wrap .rule-input {
    background: #0b0f19 !important;
    border: 1.5px solid rgba(255, 255, 255, 0.15) !important;
    color: #f8fafc !important;
    border-radius: 10px !important;
    font-family: var(--font-mono) !important;
    transition: var(--transition);
}

.tool-page-wrap input:focus,
.tool-page-wrap .frac-in:focus,
.tool-page-wrap .q-frac-in:focus,
.tool-page-wrap .num-input:focus,
.tool-page-wrap .dec-input:focus,
.tool-page-wrap .rule-input:focus {
    border-color: #0df2fe !important;
    outline: none !important;
    box-shadow: 0 0 16px rgba(13, 242, 254, 0.3) !important;
}

.go-btn,
.q-btn,
.calc-btn,
.tool-btn,
.tool-page-wrap .go-btn,
.tool-page-wrap .q-btn,
.tool-page-wrap .calc-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    padding: 10px 20px !important;
    min-height: 42px !important;
    min-width: fit-content !important;
    font-size: 0.92rem !important;
    font-weight: 700 !important;
    font-family: inherit !important;
    border-radius: 12px !important;
    border: none !important;
    cursor: pointer !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    background: linear-gradient(135deg, #0df2fe, #0284c7) !important;
    color: #030712 !important;
    box-shadow: 0 4px 14px rgba(13, 242, 254, 0.35) !important;
    transition: var(--transition) !important;
}

.go-btn:hover,
.q-btn:hover,
.calc-btn:hover,
.tool-btn:hover,
.tool-page-wrap .go-btn:hover,
.tool-page-wrap .q-btn:hover,
.tool-page-wrap .calc-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 22px rgba(13, 242, 254, 0.5) !important;
    filter: brightness(1.05) !important;
}

.tool-page-wrap .steps-box {
    background: rgba(13, 242, 254, 0.05) !important;
    border: 1px solid rgba(13, 242, 254, 0.2) !important;
    border-radius: 14px !important;
    color: #cbd5e1 !important;
}

.tool-page-wrap .step-n {
    background: #0df2fe !important;
    color: #030712 !important;
    font-weight: 800 !important;
}

.tool-page-wrap .result-big {
    color: #0df2fe !important;
    text-shadow: 0 0 20px rgba(13, 242, 254, 0.4) !important;
}

.tool-page-wrap .frac-line {
    background: #475569 !important;
}

.tool-page-wrap .tab {
    background: rgba(15, 23, 42, 0.6) !important;
    color: #94a3b8 !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
}

.tool-page-wrap .tab.active {
    background: linear-gradient(135deg, #0df2fe, #0284c7) !important;
    color: #030712 !important;
    border-color: #0df2fe !important;
    box-shadow: 0 4px 16px rgba(13, 242, 254, 0.35) !important;
}

.tool-page-wrap .quiz-section {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* Calculator Top Pill Buttons & History Drawer */
.cbtn-pill {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    color: #cbd5e1;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: var(--transition);
    white-space: nowrap;
}

.cbtn-pill:hover {
    background: rgba(13, 242, 254, 0.2);
    border-color: #0df2fe;
    color: #0df2fe;
}

.calc-history-panel {
    background: rgba(11, 15, 25, 0.95);
    border: 1px solid rgba(13, 242, 254, 0.25);
    border-radius: 12px;
    padding: 12px 14px;
    margin-bottom: 12px;
    max-height: 180px;
    overflow-y: auto;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
    animation: fadeInDown 0.2s ease-out;
}

.calc-hist-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 700;
    color: #0df2fe;
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 4px;
}

.calc-hist-clear-btn {
    font-size: 0.75rem;
    color: #ef4444;
    cursor: pointer;
    background: none;
    border: none;
    padding: 2px 6px;
    border-radius: 4px;
}

.calc-hist-clear-btn:hover {
    background: rgba(239, 68, 68, 0.15);
}

.calc-hist-row {
    padding: 6px 8px;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.15s ease;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.calc-hist-row:hover {
    background: rgba(13, 242, 254, 0.1);
}

.calc-hist-expr {
    color: #94a3b8;
}

.calc-hist-res {
    color: #0df2fe;
    font-weight: 700;
}

.calc-hist-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 10px 0;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   PAGE-HOME (Light Mode) Comprehensive Component Overrides
   ========================================================================== */

.page-home .brand-logo {
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.18), 0 1px 3px rgba(0, 0, 0, 0.08);
}

.page-home .brand-name {
    background: linear-gradient(135deg, #1e1b4b 0%, #4338ca 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .tool-page-wrap .card,
.page-home .tool-card {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05) !important;
    color: #1e293b !important;
}

.page-home .tool-title-row h1 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .tool-desc {
    color: #475569 !important;
}

.page-home .tool-breadcrumb {
    color: #64748b !important;
}

.page-home .tool-breadcrumb a {
    color: #4f46e5 !important;
}

.page-home .tool-tab {
    background: #f1f5f9 !important;
    border-color: #cbd5e1 !important;
    color: #475569 !important;
}

.page-home .tool-tab:hover {
    background: #e2e8f0 !important;
    color: #0f172a !important;
}

.page-home .tool-tab.active {
    background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
    color: #ffffff !important;
    border-color: #4f46e5 !important;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25) !important;
}

.page-home .tool-guide-head {
    border-bottom-color: #e2e8f0 !important;
}

.page-home .tool-guide-head h2 {
    color: #0f172a !important;
}

.page-home .tool-guide-head p {
    color: #64748b !important;
}

.page-home .tool-guide-section {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03) !important;
}

.page-home .tool-guide-section:hover {
    border-color: rgba(79, 70, 229, 0.3) !important;
}

.page-home .tool-guide-section .sec-num {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(14, 165, 233, 0.1)) !important;
    color: #4f46e5 !important;
    border-color: rgba(79, 70, 229, 0.25) !important;
}

.page-home .tool-guide-section h2,
.page-home .tool-guide-section h3 {
    color: #0f172a !important;
}

.page-home .tool-guide-section p {
    color: #475569 !important;
}

.page-home .tool-guide-section ul li {
    color: #475569 !important;
}

.page-home .tool-guide-section ul li::before {
    background: rgba(79, 70, 229, 0.1) !important;
    color: #4f46e5 !important;
}

.page-home .tool-related-bar {
    background: #f8fafc !important;
    border-color: #e2e8f0 !important;
}

.page-home .tool-related-bar h3 {
    color: #0f172a !important;
}

.page-home .tool-chip {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    color: #4f46e5 !important;
}

.page-home .tool-chip:hover {
    background: #eef2ff !important;
    border-color: #4f46e5 !important;
}

.page-home .tool-page-wrap input,
.page-home .tool-page-wrap .frac-in,
.page-home .tool-page-wrap .q-frac-in,
.page-home .tool-page-wrap .num-input,
.page-home .tool-page-wrap .dec-input,
.page-home .tool-page-wrap .frac-num-input,
.page-home .tool-input {
    background: #f8fafc !important;
    border: 1.5px solid #cbd5e1 !important;
    color: #0f172a !important;
}

.page-home .tool-page-wrap input:focus,
.page-home .tool-page-wrap .frac-in:focus,
.page-home .tool-page-wrap .q-frac-in:focus,
.page-home .tool-page-wrap .num-input:focus,
.page-home .tool-page-wrap .dec-input:focus,
.page-home .tool-page-wrap .frac-num-input:focus,
.page-home .tool-input:focus {
    border-color: #4f46e5 !important;
    box-shadow: 0 0 14px rgba(79, 70, 229, 0.2) !important;
}

.page-home .tool-btn,
.page-home .go-btn,
.page-home .q-btn,
.page-home .calc-btn {
    background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25) !important;
}

.page-home .tool-steps-box,
.page-home .steps-box {
    background: rgba(79, 70, 229, 0.04) !important;
    border: 1px solid rgba(79, 70, 229, 0.15) !important;
    color: #1e293b !important;
}

.page-home .tool-steps-box h3,
.page-home .steps-box h3 {
    color: #4f46e5 !important;
}

.page-home .tool-step-item {
    color: #334155 !important;
}

.page-home .tool-step-n,
.page-home .step-n {
    background: #4f46e5 !important;
    color: #ffffff !important;
}

.page-home .tool-result-big,
.page-home .result-big {
    color: #4f46e5 !important;
    text-shadow: none !important;
}

.page-home .frac-line {
    background: #cbd5e1 !important;
}

.page-home .frac-label {
    color: #64748b !important;
}

/* Light Mode Blog Articles */
.page-home .blog-hero h1 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .blog-card-link {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05) !important;
    color: #0f172a !important;
}

.page-home .blog-card-link:hover {
    border-color: #4f46e5 !important;
    box-shadow: 0 16px 32px rgba(79, 70, 229, 0.1) !important;
}

.page-home .blog-card-body h2 {
    color: #0f172a !important;
}

.page-home .blog-card-body p {
    color: #475569 !important;
}

.page-home .blog-card-meta {
    border-top-color: #f1f5f9 !important;
    color: #64748b !important;
}

.page-home .article-header h1 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .article-content {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05) !important;
    color: #334155 !important;
}

.page-home .article-content h2 {
    color: #0f172a !important;
    border-bottom-color: #e2e8f0 !important;
}

.page-home .article-content h3 {
    color: #4f46e5 !important;
}

.page-home .formula-highlight {
    background: #f8fafc !important;
    border-left-color: #4f46e5 !important;
    color: #0f172a !important;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #4f46e5 !important;
}

.page-home .cta-box {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.06), rgba(124, 58, 237, 0.08)) !important;
    border-color: rgba(79, 70, 229, 0.2) !important;
}

.page-home .cta-box h2,
.page-home .cta-box h3,
.page-home .cta-box h4 {
    color: #4f46e5 !important;
}

.page-home .cta-box p,
.page-home .cta-box span {
    color: #475569 !important;
}

.page-home .guide-intro {
    color: #475569 !important;
    border-left-color: #4f46e5 !important;
}

.page-home .article-meta {
    color: #64748b !important;
    border-bottom-color: #e2e8f0 !important;
}

.page-home details {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
}

.page-home details summary {
    color: #1e1b4b !important;
}

.page-home details p {
    color: #475569 !important;
}

/* Light Mode Calculator Controls */
.page-home .cbtn-pill {
    background: #eef2ff !important;
    border-color: #c7d2fe !important;
    color: #4338ca !important;
}

.page-home .cbtn-pill:hover {
    background: #e0e7ff !important;
    border-color: #4f46e5 !important;
}

.page-home .calc-history-panel {
    background: #ffffff !important;
    border-color: #c7d2fe !important;
    box-shadow: 0 10px 24px rgba(79, 70, 229, 0.1) !important;
}

.page-home .calc-hist-header {
    color: #4f46e5 !important;
    border-bottom-color: #e2e8f0 !important;
}

.page-home .calc-hist-row:hover {
    background: #eef2ff !important;
}

.page-home .calc-hist-res {
    color: #4f46e5 !important;
}

/* Light Mode Footer */
.page-home .site-footer {
    background: #f8fafc !important;
    border-top: 1.5px solid #e2e8f0 !important;
}

.page-home .footer-col-brand .footer-desc {
    color: #64748b !important;
}

.page-home .footer-badges .fbadge {
    background: rgba(79, 70, 229, 0.06) !important;
    border-color: rgba(79, 70, 229, 0.2) !important;
    color: #4f46e5 !important;
}

.page-home .footer-title {
    color: #0f172a !important;
}

.page-home .footer-links li a {
    color: #475569 !important;
}

.page-home .footer-links li a:hover {
    color: #4f46e5 !important;
}

.page-home .footer-links li a i {
    color: rgba(79, 70, 229, 0.5) !important;
}

.page-home .footer-bottom {
    border-top-color: #e2e8f0 !important;
}

.page-home .footer-bottom-inner {
    color: #64748b !important;
}

.page-home .footer-legal a {
    color: #64748b !important;
}

.page-home .footer-legal a:hover {
    color: #4f46e5;
}

/* ==========================================================================
   HOMEPAGE LIGHT MODE (Complete Light Overrides for Hero, Guide & FAQ)
   ========================================================================== */

/* Hero Live Calculator in Light Mode */
.page-home .calc-card-glass {
    background: rgba(255, 255, 255, 0.92) !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.12), 0 0 0 1px rgba(255, 255, 255, 0.8) inset !important;
}

.page-home .calc-badge-title {
    color: #1e1b4b !important;
}

.page-home .calc-display-wrap {
    background: #f8fafc !important;
    border: 1.5px solid #cbd5e1 !important;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.04) !important;
}

.page-home .calc-expr {
    color: #64748b !important;
}

.page-home .calc-display {
    color: #0f172a !important;
    text-shadow: none !important;
}

.page-home .cbtn-num {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    color: #0f172a !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04) !important;
}

.page-home .cbtn-num:hover {
    background: #f1f5f9 !important;
    border-color: #cbd5e1 !important;
    color: #0f172a !important;
}

.page-home .cbtn-fn {
    background: #f1f5f9 !important;
    border: 1px solid #e2e8f0 !important;
    color: #334155 !important;
}

.page-home .cbtn-fn:hover {
    background: #e2e8f0 !important;
    color: #0f172a !important;
}

.page-home .cbtn-op {
    background: #eef2ff !important;
    border: 1px solid #c7d2fe !important;
    color: #4f46e5 !important;
    font-weight: 800 !important;
}

.page-home .cbtn-op:hover {
    background: #e0e7ff !important;
    color: #3730a3 !important;
}

.page-home .cbtn-cl {
    background: #fef2f2 !important;
    border: 1px solid #fecaca !important;
    color: #dc2626 !important;
}

.page-home .cbtn-cl:hover {
    background: #fee2e2 !important;
}

.page-home .cbtn-eq {
    background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35) !important;
}

.page-home .cbtn-eq:hover {
    box-shadow: 0 6px 22px rgba(79, 70, 229, 0.5) !important;
}

.page-home .calc-footer-hint {
    color: #64748b !important;
}

/* Trust Strip in Light Mode */
.page-home .trust-strip {
    background: #ffffff !important;
    border-top: 1px solid #e2e8f0 !important;
    border-bottom: 1px solid #e2e8f0 !important;
}

.page-home .trust-name {
    color: #0f172a !important;
}

.page-home .trust-sub {
    color: #64748b !important;
}

/* Tools Grid in Light Mode */
.page-home .tool-card-item {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.04) !important;
}

.page-home .tool-card-item:hover {
    border-color: #4f46e5 !important;
    box-shadow: 0 16px 36px rgba(79, 70, 229, 0.12) !important;
}

.page-home .tool-card-item h3 {
    color: #0f172a !important;
}

.page-home .tool-card-item p {
    color: #475569 !important;
}

.page-home .tool-tag {
    background: rgba(79, 70, 229, 0.08) !important;
    color: #4f46e5 !important;
}

.search-bar-wrap {
    width: 100%;
    max-width: 560px;
    margin: 0 auto 32px;
    position: relative;
    box-sizing: border-box;
}

.search-bar-wrap input,
.search-input,
#tool-search,
#blog-search {
    width: 100%;
    min-width: 0;
    padding: 14px 20px 14px 48px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    color: #f8fafc;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    box-sizing: border-box;
    display: block;
    transition: all 0.2s ease;
}

.search-bar-wrap input:focus,
.search-input:focus,
#tool-search:focus,
#blog-search:focus {
    border-color: #0df2fe;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 3px rgba(13, 242, 254, 0.2);
}

.page-home .search-bar-wrap input,
.page-home .search-input,
.page-home #tool-search,
.page-home #blog-search {
    background: #ffffff !important;
    border: 1.5px solid #cbd5e1 !important;
    color: #0f172a !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04) !important;
}

.page-home .search-bar-wrap input:focus,
.page-home .search-input:focus,
.page-home #tool-search:focus,
.page-home #blog-search:focus {
    border-color: #4f46e5 !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15) !important;
}

/* Blog Section in Light Mode */
.page-home .post-card {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.04) !important;
}

.page-home .post-card:hover {
    border-color: #4f46e5 !important;
    box-shadow: 0 16px 36px rgba(79, 70, 229, 0.12) !important;
}

.page-home .post-body h3 {
    color: #0f172a !important;
}

.page-home .post-body p {
    color: #475569 !important;
}

.page-home .post-meta {
    color: #64748b !important;
}

/* SEO Guide & Chapters in Light Mode */
.page-home .seo-guide-section {
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.6) 0%, #f1f5f9 100%) !important;
}

.page-home .guide-header h2 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .guide-header p {
    color: #475569 !important;
}

.page-home .guide-chapter {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.05) !important;
}

.page-home .chapter-badge {
    background: rgba(79, 70, 229, 0.08) !important;
    border-color: rgba(79, 70, 229, 0.2) !important;
    color: #4f46e5 !important;
}

.page-home .guide-chapter h3 {
    color: #0f172a !important;
}

.page-home .guide-chapter p {
    color: #334155 !important;
}

.page-home .guide-chapter ul,
.page-home .guide-chapter ol,
.page-home .guide-chapter li {
    color: #334155 !important;
}

.page-home .guide-chapter li strong {
    color: #0f172a !important;
}

.page-home .guide-subcard {
    background: #f8fafc !important;
    border: 1.5px solid #e2e8f0 !important;
}

.page-home .guide-subcard:hover {
    border-color: #4f46e5 !important;
    box-shadow: 0 10px 24px rgba(79, 70, 229, 0.1) !important;
}

.page-home .guide-subcard h4 {
    color: #0f172a !important;
}

.page-home .guide-subcard p {
    color: #475569 !important;
}

.page-home .guide-img-card {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06) !important;
}

.page-home .guide-img-caption {
    background: #f8fafc !important;
    border-top: 1px solid #e2e8f0 !important;
    color: #475569 !important;
}

/* Comparison Tables in Light Mode */
.page-home .comparison-table-wrap {
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04) !important;
}

.page-home .comparison-table {
    background: #ffffff !important;
    color: #1e293b !important;
}

.page-home .comparison-table th {
    background: #eef2ff !important;
    color: #312e81 !important;
    border-bottom: 1.5px solid #c7d2fe !important;
}

.page-home .comparison-table td {
    border-bottom: 1px solid #e2e8f0 !important;
    color: #334155 !important;
}

.page-home .comparison-table tbody tr:nth-child(even) {
    background: #f8fafc !important;
}

/* Shortcut Table in Light Mode */
.page-home .shortcut-table-wrap {
    border: 1.5px solid #e2e8f0 !important;
}

.page-home .shortcut-table {
    background: #ffffff !important;
    color: #1e293b !important;
}

.page-home .shortcut-table th {
    background: #eef2ff !important;
    color: #312e81 !important;
}

.page-home .shortcut-table td {
    border-bottom: 1px solid #e2e8f0 !important;
    color: #334155 !important;
}

.page-home .shortcut-table kbd {
    background: #f1f5f9 !important;
    border: 1px solid #cbd5e1 !important;
    color: #0f172a !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1) !important;
}

/* FAQ Accordion in Light Mode */
.page-home .faq-item {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03) !important;
}

.page-home .faq-item summary {
    color: #0f172a !important;
}

.page-home .faq-item summary::after {
    color: #4f46e5 !important;
}

.page-home .faq-item p {
    color: #334155 !important;
}

/* ============================================================
   LEGAL PAGES — Premium Design System
   Used by: privacy-policy.html, terms-conditions.html,
             disclaimer.html, contact.html
   ============================================================ */

/* ── Hero Banner ─────────────────────────────────────────── */
.legal-hero {
    position: relative;
    overflow: hidden;
    padding: 64px 24px 56px;
    text-align: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0c0f1a 100%);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
}
.legal-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(13,242,254,0.08) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 80% 50%, rgba(124,58,237,0.1) 0%, transparent 70%);
    pointer-events: none;
}
.legal-hero-inner {
    position: relative;
    max-width: 760px;
    margin: 0 auto;
}
.legal-hero-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 20px;
    margin-bottom: 20px;
    font-size: 2rem;
    background: linear-gradient(135deg, rgba(13,242,254,0.15), rgba(124,58,237,0.2));
    border: 1.5px solid rgba(13,242,254,0.3);
    box-shadow: 0 16px 40px rgba(0,0,0,0.4), 0 0 0 8px rgba(13,242,254,0.05);
    color: #0df2fe;
}
.legal-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    margin: 0 0 12px;
    background: linear-gradient(135deg, #ffffff 0%, #c7d2fe 50%, #0df2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.legal-hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 4px;
}
.legal-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(99,102,241,0.12);
    border: 1px solid rgba(99,102,241,0.3);
    color: #a5b4fc;
}
.legal-hero-badge i { font-size: 0.7rem; }

/* Light-mode hero */
.page-home .legal-hero {
    background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 50%, #f0f9ff 100%);
    border-bottom: 1px solid rgba(99,102,241,0.15);
}
.page-home .legal-hero::before {
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(99,102,241,0.07) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 80% 50%, rgba(14,165,233,0.07) 0%, transparent 70%);
}
.page-home .legal-hero-icon {
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(14,165,233,0.12));
    border-color: rgba(99,102,241,0.3);
    color: #4f46e5;
    box-shadow: 0 16px 40px rgba(99,102,241,0.15), 0 0 0 8px rgba(99,102,241,0.05);
}
.page-home .legal-hero h1 {
    background: linear-gradient(135deg, #1e1b4b 0%, #4f46e5 60%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.page-home .legal-hero-badge {
    background: rgba(99,102,241,0.08);
    border-color: rgba(99,102,241,0.25);
    color: #4338ca;
}

/* ── Page Layout ─────────────────────────────────────────── */
.legal-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 48px auto 80px;
    padding: 0 24px;
    align-items: start;
    box-sizing: border-box;
}

.legal-body {
    min-width: 0;
    max-width: 100%;
}

@media (max-width: 900px) {
    .legal-layout { grid-template-columns: 1fr; }
    .legal-toc { display: none; }
}

/* ── Table of Contents Sidebar ───────────────────────────── */
.legal-toc {
    position: sticky;
    top: 88px;
    background: rgba(30,27,75,0.4);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 16px;
    padding: 20px;
    backdrop-filter: blur(12px);
}
.legal-toc h4 {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #7c3aed;
    margin: 0 0 14px;
}
.legal-toc ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.legal-toc li a {
    display: block;
    padding: 7px 10px;
    font-size: 0.83rem;
    color: var(--text-secondary, #94a3b8);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
}
.legal-toc li a:hover {
    background: rgba(99,102,241,0.1);
    color: #0df2fe;
    border-left-color: #0df2fe;
    padding-left: 14px;
}

.page-home .legal-toc {
    background: rgba(255,255,255,0.9);
    border-color: rgba(99,102,241,0.2);
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}
.page-home .legal-toc h4 { color: #4f46e5; }
.page-home .legal-toc li a { color: #475569; }
.page-home .legal-toc li a:hover { color: #4f46e5; border-left-color: #4f46e5; background: rgba(99,102,241,0.06); }

/* ── Article Body ────────────────────────────────────────── */
.legal-body {
    min-width: 0;
    max-width: 100%;
}
.legal-section {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: 20px;
    padding: 32px 36px;
    margin-bottom: 24px;
    transition: border-color 0.25s ease;
    box-sizing: border-box;
    max-width: 100%;
    overflow-wrap: break-word;
}
.legal-section table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
}
.legal-section:hover { border-color: rgba(99,102,241,0.3); }
.legal-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}
.legal-section-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(13,242,254,0.2), rgba(124,58,237,0.2));
    color: #0df2fe;
    border: 1px solid rgba(13,242,254,0.3);
    flex-shrink: 0;
}
.legal-section h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary, #e2e8f0);
    margin: 0;
}
.legal-section p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-secondary, #94a3b8);
    margin: 0 0 12px;
}
.legal-section p:last-child { margin-bottom: 0; }
.legal-section ul {
    margin: 12px 0;
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.legal-section ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.93rem;
    line-height: 1.7;
    color: var(--text-secondary, #94a3b8);
}
.legal-section ul li::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(13,242,254,0.12);
    color: #0df2fe;
    font-size: 0.65rem;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 2px;
}
.legal-section a {
    color: #0df2fe;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(13,242,254,0.3);
    transition: border-color 0.2s;
}
.legal-section a:hover { border-bottom-color: #0df2fe; }
.legal-section code {
    font-family: var(--font-mono, monospace);
    font-size: 0.85rem;
    background: rgba(13,242,254,0.08);
    color: #0df2fe;
    padding: 2px 8px;
    border-radius: 5px;
    border: 1px solid rgba(13,242,254,0.15);
}

/* Alert box inside section */
.legal-alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 12px;
    border-left: 3px solid #f59e0b;
    background: rgba(245,158,11,0.06);
    margin: 16px 0;
}
.legal-alert i { color: #f59e0b; margin-top: 2px; flex-shrink: 0; }
.legal-alert p { margin: 0; color: #fcd34d; font-size: 0.88rem; }

/* Light mode sections */
.page-home .legal-section {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 2px 16px rgba(0,0,0,0.04);
}
.page-home .legal-section:hover { border-color: rgba(99,102,241,0.35); }
.page-home .legal-section-num {
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(14,165,233,0.12));
    color: #4f46e5;
    border-color: rgba(99,102,241,0.3);
}
.page-home .legal-section h2 { color: #1e1b4b; }
.page-home .legal-section p { color: #475569; }
.page-home .legal-section ul li { color: #475569; }
.page-home .legal-section ul li::before {
    background: rgba(79,70,229,0.1);
    color: #4f46e5;
}
.page-home .legal-section a { color: #4f46e5; border-bottom-color: rgba(79,70,229,0.3); }
.page-home .legal-section a:hover { border-bottom-color: #4f46e5; }
.page-home .legal-section code {
    background: rgba(79,70,229,0.06);
    color: #4f46e5;
    border-color: rgba(79,70,229,0.15);
}
.page-home .legal-alert {
    background: rgba(245,158,11,0.06);
    border-left-color: #d97706;
}
.page-home .legal-alert p { color: #92400e; }
.page-home .legal-alert i { color: #d97706; }

/* ── Breadcrumb inside legal pages ───────────────────────── */
.legal-breadcrumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px 0;
    font-size: 0.82rem;
    color: var(--text-muted, #64748b);
    display: flex;
    align-items: center;
    gap: 6px;
    box-sizing: border-box;
}
.legal-breadcrumb a { color: #0df2fe; text-decoration: none; transition: color 0.2s; }
.legal-breadcrumb a:hover { color: #38bdf8; }
.page-home .legal-breadcrumb a { color: #4f46e5; }

/* ── Contact Page — specific overrides ───────────────────── */
.contact-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 28px;
    margin-top: 0;
}
@media (max-width: 720px) {
    .contact-grid { grid-template-columns: 1fr; }
}
.contact-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: 20px;
    padding: 28px;
    transition: border-color 0.25s, transform 0.2s;
}
.contact-card:hover { border-color: rgba(99,102,241,0.4); transform: translateY(-2px); }
.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary, #e2e8f0);
    margin: 0 0 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.contact-card h3 i { color: #0df2fe; }
.page-home .contact-card { background: #ffffff; border-color: #e2e8f0; box-shadow: 0 2px 16px rgba(0,0,0,0.04); }
.page-home .contact-card:hover { border-color: rgba(99,102,241,0.4); }
.page-home .contact-card h3 { color: #1e1b4b; }
.page-home .contact-card h3 i { color: #4f46e5; }

.contact-field { margin-bottom: 16px; }
.contact-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary, #94a3b8);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}
.contact-field input,
.contact-field select,
.contact-field textarea {
    width: 100%;
    padding: 11px 14px;
    border-radius: 10px;
    border: 1.5px solid rgba(99,102,241,0.2);
    background: rgba(255,255,255,0.04);
    color: var(--text-primary, #e2e8f0);
    font-family: inherit;
    font-size: 0.93rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}
.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
    border-color: #0df2fe;
    box-shadow: 0 0 0 3px rgba(13,242,254,0.1);
}
.contact-field textarea { resize: vertical; min-height: 120px; line-height: 1.6; }

.page-home .contact-field label { color: #64748b; }
.page-home .contact-field input,
.page-home .contact-field select,
.page-home .contact-field textarea {
    background: #f8fafc;
    border-color: #e2e8f0;
    color: #0f172a;
}
.page-home .contact-field input:focus,
.page-home .contact-field select:focus,
.page-home .contact-field textarea:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79,70,229,0.08);
}

.contact-submit-btn {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #0df2fe, #7c3aed);
    color: #fff;
    box-shadow: 0 8px 24px rgba(13,242,254,0.25);
    transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
    margin-top: 8px;
}
.contact-submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 12px 32px rgba(13,242,254,0.35);
}

.page-home .contact-submit-btn {
    background: linear-gradient(135deg, #4f46e5, #0ea5e9);
    box-shadow: 0 8px 24px rgba(79,70,229,0.2);
}
.page-home .contact-submit-btn:hover {
    box-shadow: 0 12px 32px rgba(79,70,229,0.3);
}

.contact-channel-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px;
    border-radius: 14px;
    border: 1px solid rgba(99,102,241,0.15);
    background: rgba(255,255,255,0.03);
    margin-bottom: 14px;
    transition: border-color 0.2s, background 0.2s;
}
.contact-channel-card:last-child { margin-bottom: 0; }
.contact-channel-card:hover { border-color: rgba(99,102,241,0.3); background: rgba(99,102,241,0.04); }
.contact-channel-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}
.contact-channel-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary, #e2e8f0);
    margin: 0 0 3px;
}
.contact-channel-card .ch-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    color: #10b981;
    margin-bottom: 6px;
}
.contact-channel-card p { font-size: 0.83rem; color: var(--text-secondary, #94a3b8); margin: 0 0 8px; }
.contact-channel-card a {
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
    font-family: var(--font-mono, monospace);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}
.contact-channel-card a:hover { border-bottom-color: currentColor; }

.page-home .contact-channel-card { background: #f8fafc; border-color: #e2e8f0; }
.page-home .contact-channel-card:hover { border-color: rgba(99,102,241,0.35); background: #f1f5f9; }
.page-home .contact-channel-card h4 { color: #1e1b4b; }
.page-home .contact-channel-card p { color: #64748b; }

/* Success message */
.contact-success {
    display: none;
    text-align: center;
    padding: 32px 20px;
}
.contact-success i { font-size: 3rem; color: #10b981; display: block; margin-bottom: 12px; }
.contact-success h4 { color: #10b981; font-size: 1.3rem; margin: 0 0 8px; }
.contact-success p { color: var(--text-secondary, #94a3b8); font-size: 0.9rem; margin: 0; }
.page-home .contact-success p { color: #64748b; }

/* ==========================================================================
   Directory Pages (Tools & Guides Index) - Fully Themed for Dark & Light
   ========================================================================== */
.directory-hero {
    text-align: center;
    margin-bottom: 40px;
}

.directory-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin: 12px 0 14px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-home .directory-title {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.directory-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 640px;
    margin: 0 auto 28px;
    line-height: 1.6;
}

.search-bar-wrap {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-accent);
    font-size: 1rem;
    pointer-events: none;
}

.directory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 22px;
}

.dir-card {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    padding: 24px;
    border-radius: 18px;
    background: var(--bg-surface-2, #111827);
    border: var(--glass-border);
    transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-main);
}

.dir-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 16px 36px rgba(13, 242, 254, 0.12);
}

.page-home .dir-card {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04) !important;
}

.page-home .dir-card:hover {
    border-color: #4f46e5 !important;
    box-shadow: 0 16px 32px rgba(79, 70, 229, 0.12) !important;
}

.dir-card-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
}

.dir-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(13, 242, 254, 0.15), rgba(124, 58, 237, 0.15));
    border: 1px solid rgba(13, 242, 254, 0.3);
    color: #0df2fe;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.page-home .dir-icon {
    background: rgba(79, 70, 229, 0.08) !important;
    border: 1.5px solid rgba(79, 70, 229, 0.2) !important;
    color: #4f46e5 !important;
}

.dir-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 2px;
    letter-spacing: -0.01em;
}

.dir-cat-tag {
    font-size: 0.75rem;
    font-weight: 700;
    color: #a78bfa;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.page-home .dir-cat-tag {
    color: #7c3aed !important;
}

.dir-card-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0 0 18px;
    flex: 1;
}

.dir-card-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 12px;
    font-size: 0.82rem;
    font-weight: 600;
    color: #0df2fe;
}

.page-home .dir-card-action {
    border-top-color: #f1f5f9 !important;
    color: #4f46e5 !important;
}

/* ==========================================================================
   Article & Blog Light Mode Theme Enhancements
   ========================================================================== */
.page-home .article-content {
    background: #ffffff !important;
    border: 1.5px solid #e2e8f0 !important;
    color: #334155 !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04) !important;
}

.page-home .article-content h2 {
    color: #0f172a !important;
    border-bottom: 1px solid #e2e8f0 !important;
}

.page-home .article-content p {
    color: #334155 !important;
}

.page-home .article-header h1 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 50%, #4f46e5 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
}

.page-home .formula-highlight {
    background: #f8fafc !important;
    border-left: 4px solid #4f46e5 !important;
    border-top: 1px solid #e2e8f0 !important;
    border-right: 1px solid #e2e8f0 !important;
    border-bottom: 1px solid #e2e8f0 !important;
    color: #0f172a !important;
}

.page-home .cta-box {
    background: linear-gradient(135deg, #eef2ff, #f8fafc) !important;
    border: 1.5px solid #c7d2fe !important;
}

.page-home .cta-box h3 {
    color: #1e1b4b !important;
}

.page-home .cta-box p {
    color: #475569 !important;
}


/* ==========================================================================
   HOW IT WORKS SECTION
   ========================================================================== */
.how-steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    margin-top: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.how-step {
    flex: 1 1 240px;
    max-width: 300px;
    background: var(--bg-surface);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    text-align: center;
    transition: var(--transition);
}

.how-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(13, 242, 254, 0.15);
}

.how-step-number {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    background: rgba(var(--color-accent-rgb), 0.1);
    border-radius: 99px;
    padding: 4px 12px;
    display: inline-block;
    margin-bottom: 16px;
}

.how-step-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(var(--color-accent-rgb), 0.2), rgba(var(--color-secondary-rgb), 0.15));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 22px;
    color: var(--color-accent);
}

.how-step h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.how-step p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.how-step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
    color: var(--color-accent);
    opacity: 0.5;
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 60px;
}

@media (max-width: 768px) {
    .how-step-arrow {
        display: none;
    }
    .how-step {
        max-width: 100%;
    }
}


/* ==========================================================================
   WHY CALCSOLVER SECTION
   ========================================================================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 16px;
}

@media (max-width: 1024px) {
    .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .why-grid { grid-template-columns: 1fr; }
}

.why-card {
    background: var(--bg-surface);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.why-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(var(--why-color-rgb, 13, 242, 254), 0.04), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.why-card:hover {
    transform: translateY(-3px);
    border-color: rgba(var(--color-accent-rgb), 0.3);
    box-shadow: 0 12px 28px -8px rgba(0,0,0,0.2);
}

.why-card:hover::before {
    opacity: 1;
}

.why-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--why-color, #0df2fe) 15%, transparent);
    color: var(--why-color, #0df2fe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.why-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}


/* ==========================================================================
   FORMULA REFERENCE SECTION
   ========================================================================== */
.formula-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 8px 0 24px;
    border-bottom: 2px solid var(--glass-border, rgba(255,255,255,0.08));
    padding-bottom: 0;
}

.formula-tab {
    background: transparent;
    border: none;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.formula-tab:hover {
    color: var(--text-primary);
    background: rgba(var(--color-accent-rgb), 0.06);
}

.formula-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    background: rgba(var(--color-accent-rgb), 0.07);
}

.formula-panel {
    display: none;
}

.formula-panel.active {
    display: block;
}

.formula-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}

.formula-card {
    background: var(--bg-surface);
    border: var(--glass-border);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    transition: var(--transition);
    cursor: default;
}

.formula-card:hover {
    border-color: rgba(var(--color-accent-rgb), 0.35);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px -4px rgba(var(--color-accent-rgb), 0.12);
}

.formula-expr {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 6px;
    line-height: 1.5;
    word-break: break-word;
}

.formula-desc {
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.5;
}


/* ==========================================================================
   SCRATCH NOTES WIDGET
   ========================================================================== */
.scratch-widget {
    position: fixed;
    bottom: 100px;
    left: 24px;
    z-index: 1100;
    display: flex;
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 12px;
}

.scratch-toggle-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b, #fb923c);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    box-shadow: 0 4px 18px rgba(245, 158, 11, 0.45);
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
    position: relative;
}

.scratch-toggle-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.6);
}

.scratch-toggle-btn:active {
    transform: scale(0.96);
}

.scratch-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background: var(--color-danger, #ef4444);
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    border: 2px solid var(--bg-app, #030712);
}

/* Panel */
.scratch-panel {
    width: 340px;
    background: var(--bg-surface-solid, #111827);
    border: var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all 0.28s cubic-bezier(0.4,0,0.2,1);
    transform-origin: bottom left;
}

.scratch-closed {
    opacity: 0;
    transform: scale(0.88) translateY(12px);
    pointer-events: none;
}

.scratch-open {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: all;
}

/* Pinned: stays always-open */
.scratch-pinned {
    opacity: 1 !important;
    transform: scale(1) translateY(0) !important;
    pointer-events: all !important;
}

.scratch-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: rgba(245, 158, 11, 0.1);
    border-bottom: 1px solid rgba(245, 158, 11, 0.2);
    flex-shrink: 0;
}

.scratch-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    font-weight: 700;
    color: #f59e0b;
}

.scratch-header-actions {
    display: flex;
    gap: 4px;
}

.scratch-hbtn {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: transparent;
    border: none;
    color: var(--text-muted, #94a3b8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: var(--transition);
}

.scratch-hbtn:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-primary);
}

.scratch-hbtn.active-pin {
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.12);
}

.scratch-toolbar {
    display: flex;
    gap: 4px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--glass-border, rgba(255,255,255,0.08));
    flex-shrink: 0;
    flex-wrap: wrap;
}

.scratch-fmt-btn {
    background: transparent;
    border: 1px solid var(--glass-border, rgba(255,255,255,0.08));
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 12px;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.scratch-fmt-btn:hover {
    background: rgba(var(--color-accent-rgb), 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.scratch-textarea {
    flex: 1;
    width: 100%;
    min-height: 220px;
    max-height: 360px;
    resize: vertical;
    background: transparent;
    border: none;
    outline: none;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--text-primary);
    caret-color: #f59e0b;
}

.scratch-textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.scratch-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    border-top: 1px solid var(--glass-border, rgba(255,255,255,0.08));
    flex-shrink: 0;
}

.scratch-char-count {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
}

.scratch-saved-indicator {
    font-size: 11px;
    color: var(--color-success, #10b981);
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.3s;
}

.scratch-saved-indicator.visible {
    opacity: 1;
}

/* Light mode overrides for new sections */
.page-home .how-step {
    background: #fff;
    border-color: #e2e8f0;
}
.page-home .why-card {
    background: #fff;
    border-color: #e2e8f0;
}
.page-home .formula-card {
    background: #fff;
    border-color: #e2e8f0;
}
.page-home .formula-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}
.page-home .scratch-panel {
    background: #fff;
    border-color: #e2e8f0;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}
.page-home .scratch-textarea {
    color: #0f172a;
}
.page-home .scratch-hbtn {
    color: #475569;
}
.page-home .scratch-hbtn:hover {
    background: rgba(0,0,0,0.06);
    color: #0f172a;
}
.page-home .scratch-fmt-btn {
    color: #475569;
    border-color: #e2e8f0;
}
.page-home .scratch-toolbar {
    border-color: #e2e8f0;
}
.page-home .scratch-footer {
    border-color: #e2e8f0;
}

/* AdSense Container Slots */
.adsense-slot {
    margin: 32px auto;
    max-width: 100%;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    text-align: center;
    overflow: hidden;
}
.adsense-slot-inline {
    min-height: 250px;
}
.page-home .scratch-header {
    border-color: rgba(245,158,11,0.25);
}

/* ==========================================================================
   Blog & Article Light / Dark Mode Color & Contrast Optimization
   ========================================================================== */

/* Dark Mode Article Styles */
body.page-dark .article-header h1 {
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 50%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
body.page-dark .article-meta {
    color: var(--text-muted);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}
body.page-dark .article-content {
    background: rgba(17, 24, 39, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}
body.page-dark .article-content h2 {
    color: #f8fafc;
    border-bottom-color: rgba(255, 255, 255, 0.08);
}
body.page-dark .article-content h3 {
    color: #38bdf8;
}
body.page-dark .toc-box {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(192, 132, 252, 0.3);
}
body.page-dark .toc-title {
    color: #f8fafc;
}
body.page-dark .toc-list a {
    color: #c084fc;
}
body.page-dark .toc-list a:hover {
    color: #38bdf8;
}
body.page-dark .formula-highlight {
    background: rgba(192, 132, 252, 0.1);
    border-left: 4px solid #c084fc;
    color: #f8fafc;
}
body.page-dark .example-box {
    background: rgba(14, 165, 233, 0.08);
    border: 1px solid rgba(14, 165, 233, 0.25);
    color: #cbd5e1;
}
body.page-dark .example-title {
    color: #38bdf8;
}
body.page-dark .cta-box {
    background: linear-gradient(135deg, rgba(192, 132, 252, 0.1), rgba(124, 58, 237, 0.15));
    border: 1px solid rgba(192, 132, 252, 0.3);
    color: #ffffff;
}
body.page-dark .faq-section {
    border-top-color: rgba(255, 255, 255, 0.1);
}
body.page-dark .faq-question {
    color: #f8fafc;
}
body.page-dark .faq-answer {
    color: #cbd5e1;
}

/* Light Mode Article Overrides */
body.page-home .article-header h1 {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #6d28d9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
body.page-home .article-meta {
    color: #475569;
    border-bottom-color: #e2e8f0;
}
body.page-home .article-content {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    color: #334155 !important;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.06) !important;
}
body.page-home .article-content p.lead-p {
    color: #0f172a !important;
}
body.page-home .article-content h2 {
    color: #0f172a !important;
    border-bottom-color: #e2e8f0 !important;
}
body.page-home .article-content h3 {
    color: #0284c7 !important;
}
body.page-home .toc-box {
    background: #f8fafc !important;
    border: 1px solid #cbd5e1 !important;
}
body.page-home .toc-title {
    color: #0f172a !important;
}
body.page-home .toc-list a {
    color: #6d28d9 !important;
    font-weight: 600;
}
body.page-home .toc-list a:hover {
    color: #0284c7 !important;
}
body.page-home .formula-highlight {
    background: #f1f5f9 !important;
    border-left: 4px solid #7c3aed !important;
    border-top: 1px solid #e2e8f0;
    border-right: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
    color: #0f172a !important;
}
body.page-home .example-box {
    background: #f0f9ff !important;
    border: 1px solid #bae6fd !important;
    color: #0f172a !important;
}
body.page-home .example-title {
    color: #0284c7 !important;
}
body.page-home .cta-box {
    background: linear-gradient(135deg, #f5f3ff 0%, #eff6ff 100%) !important;
    border: 1px solid #ddd6fe !important;
    color: #0f172a !important;
}
body.page-home .cta-box h3 {
    color: #0f172a !important;
}
body.page-home .cta-box p {
    color: #475569 !important;
}
body.page-home .faq-section {
    border-top-color: #e2e8f0 !important;
}
body.page-home .faq-question {
    color: #0f172a !important;
}
body.page-home .faq-answer {
    color: #334155 !important;
}

/* ==========================================================================
   Master Table of Contents Component (Unified Across All Blog Posts)
   ========================================================================== */
.toc-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(192, 132, 252, 0.25);
    border-radius: 16px;
    padding: 22px 26px;
    margin: 10px 0 36px;
    backdrop-filter: blur(12px);
    transition: all 0.3s ease;
}
.toc-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.01em;
}
.toc-title i {
    color: #c084fc;
}
.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toc-list li {
    margin: 0;
}
.toc-list a {
    color: #c084fc;
    text-decoration: none;
    font-size: 0.96rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}
.toc-list a:hover {
    color: #38bdf8;
    transform: translateX(4px);
    text-decoration: underline;
}

/* Light Mode Override for Master TOC */
body.page-home .toc-box {
    background: #f8fafc !important;
    border: 1px solid #cbd5e1 !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}
body.page-home .toc-title {
    color: #0f172a !important;
}
body.page-home .toc-title i {
    color: #7c3aed !important;
}
body.page-home .toc-list a {
    color: #6d28d9 !important;
    font-weight: 600;
}
body.page-home .toc-list a:hover {
    color: #0284c7 !important;
}