/* Compact Card Utilities */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-3);
    margin: var(--space-6) 0;
}

.card {
    background: var(--gradient-card);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 0;
}

.card h3, .card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.card-cta-group {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.card-cta {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-weight: 500;
    text-decoration: none;
    transition: background var(--transition-fast);
    border: none;
    margin-right: var(--space-1);
}
.card-cta:hover {
    background: var(--color-primary);
    color: #fff;
}
/* Import modern font families */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* Performance optimizations */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* Design System Variables */
:root {
  /* Primary Brand Colors - Vibrant & Inviting */
  --color-primary: #4F46E5;        /* Vibrant indigo */
  --color-primary-light: #818CF8;  /* Soft indigo */
  --color-primary-lighter: #C7D2FE; /* Pale indigo */
  --color-primary-dark: #3730A3;   /* Deep indigo */

  /* Secondary Accent Colors */
  --color-secondary: #EC4899;      /* Vibrant pink */
  --color-secondary-light: #F9A8D4; /* Soft pink */
  --color-accent: #F59E0B;         /* Warm amber */
  --color-accent-light: #FCD34D;   /* Bright yellow */

  /* Neutral Palette - Warmer Tones */
  --color-bg-primary: #FEFEFE;     /* Warm white */
  --color-bg-secondary: #F8FAFC;   /* Light gray-blue */
  --color-bg-tertiary: #F1F5F9;    /* Slightly darker gray-blue */
    --color-text-primary: #18181B;   /* Near-black for max contrast */
    --color-text-secondary: #27272A; /* Darker slate for better contrast */
    --color-text-tertiary: #71717A;  /* Medium slate */

  /* Success & Status Colors */
  --color-success: #10B981;        /* Emerald green */
  --color-warning: #F59E0B;        /* Amber */
  --color-error: #EF4444;          /* Red */
  --color-info: #3B82F6;           /* Blue */

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-card: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --gradient-cta: linear-gradient(135deg, #EC4899 0%, #F59E0B 100%);

  /* Font Families */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Monaco', 'Courier New', monospace;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2vw, 3rem);

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Spacing Scale - 8px base */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.5rem;    /* 24px */
  --space-6: 2rem;      /* 32px */
  --space-8: 3rem;      /* 48px */
  --space-10: 4rem;     /* 64px */
  --space-12: 6rem;     /* 96px */
  --space-16: 8rem;     /* 128px */

  /* Border Radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* Shadows - Softer, More Elevated */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Palette - Refined */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #0F172A;     /* Deep slate */
    --color-bg-secondary: #1E293B;   /* Slate */
    --color-bg-tertiary: #334155;    /* Medium slate */
    --color-text-primary: #F1F5F9;   /* Light */
    --color-text-secondary: #CBD5E1; /* Medium light */
    --color-text-tertiary: #94A3B8;  /* Muted */
  }
}

/* Manual theme override */
[data-theme="dark"] {
  --color-bg-primary: #0F172A;     /* Deep slate */
  --color-bg-secondary: #1E293B;   /* Slate */
  --color-bg-tertiary: #334155;    /* Medium slate */
  --color-text-primary: #F1F5F9;   /* Light */
  --color-text-secondary: #CBD5E1; /* Medium light */
  --color-text-tertiary: #94A3B8;  /* Muted */
}

[data-theme="dark"] .site-header {
  background: var(--color-bg-primary);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .site-header.scrolled {
  border-bottom-color: rgba(255, 255, 255, 0.2);
}

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

html {
    font-size: 16px;
    line-height: var(--leading-normal);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    font-weight: var(--font-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    font-display: swap;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Header and Navigation */
.site-header {
    background: var(--color-bg-primary);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: var(--shadow-sm);
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-lg);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    transition: transform var(--transition-fast);
    will-change: transform;
}

.nav-brand a:hover {
    transform: translateY(-2px);
}

.nav-brand i {
    font-size: var(--text-2xl);
    background: var(--gradient-cta);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-2);
    margin: 0;
    padding: 0;
}

.nav-links a {
    position: relative;
    display: block;
    padding: var(--space-2) var(--space-4);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-cta);
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.nav-links a:hover {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
}

.nav-links a:hover::before {
    width: 80%;
}

.nav-actions .btn {
    padding: var(--space-3) var(--space-5);
    background: var(--gradient-cta);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.nav-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.theme-toggle {
    background: none;
    border: 2px solid var(--color-text-secondary);
    border-radius: var(--radius-full);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
    margin-right: var(--space-3);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-bg-secondary);
}

.theme-toggle.dark i::before {
    content: "\f185"; /* sun icon */
}

.theme-toggle.dark {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 300px);
}

/* Content Styling */
.content {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-2);
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-text-primary);
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
}

.content h1 {
    font-size: var(--text-3xl);
    color: var(--color-text-primary);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-bg-tertiary);
}

.content h2 {
    font-size: var(--text-2xl);
    color: var(--color-primary-dark);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.content h3 {
    font-size: var(--text-2xl);
    color: var(--color-primary-dark);
}

.content p {
    margin-bottom: var(--space-5);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
}

.content a {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 2px solid var(--color-primary-lighter);
    transition: all var(--transition-fast);
    font-weight: var(--font-medium);
}

.content a:hover {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}

.content code {
    padding: var(--space-1) var(--space-2);
    background: var(--color-bg-secondary);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--color-secondary);
    font-weight: var(--font-medium);
}

.content pre {
    position: relative;
    padding: var(--space-6);
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--space-6) 0;
    box-shadow: var(--shadow-md);
}

.content pre code {
    padding: 0;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--text-sm);
}

/* Tables */
.content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--space-6) 0;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.content th {
    padding: var(--space-4);
    background: var(--gradient-hero);
    color: white;
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.content th:first-child {
    border-top-left-radius: var(--radius-lg);
}

.content th:last-child {
    border-top-right-radius: var(--radius-lg);
}

.content td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

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

.content tr:hover {
    background: var(--color-bg-secondary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: var(--text-xs);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    margin: 0 var(--space-1) var(--space-1) 0;
}

.btn-primary {
    background: var(--gradient-cta);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: var(--color-bg-primary);
    color: var(--color-primary);
    border: 2px solid var(--color-primary-lighter);
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* Footer */
.site-footer {
    background: var(--color-text-primary);
    color: var(--color-text-tertiary);
    padding: var(--space-12) var(--space-6) var(--space-6);
    margin-top: var(--space-16);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: white;
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    position: relative;
    padding-bottom: var(--space-2);
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--gradient-cta);
    border-radius: var(--radius-full);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li {
    margin-bottom: var(--space-3);
}

.footer-section a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-section a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: var(--text-sm);
}

.footer-bottom a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --space-6: 1.5rem;
        --space-8: 2rem;
        --space-10: 3rem;
        --space-12: 4rem;
    }

    .main-nav {
        flex-direction: column;
        gap: var(--space-4);
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: var(--space-2);
    }

    .nav-links a {
        width: 100%;
        text-align: center;
    }

    .content {
        padding: var(--space-6) var(--space-4);
    }

    .content h1 {
        font-size: var(--text-3xl);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .content {
        max-width: 700px;
    }

    .hero-title {
        font-size: var(--text-4xl);
    }
}

@media (max-width: 480px) {
    :root {
        --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
        --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
        --text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
    }

    .hero-title {
        font-size: var(--text-2xl);
    }

    .nav-brand a {
        font-size: var(--text-lg);
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
    }
}

/* Accessibility Enhancements */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
        background: var(--gradient-card);
        color: var(--color-text-secondary);
    z-index: 10000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0000FF;
        --color-text-primary: #000000;
        --color-bg-primary: #FFFFFF;
    }

    .card {
        border: 2px solid var(--color-text-primary);
    }

    a {
        text-decoration: underline;
    }
}

/* Screen Reader Only Content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Performance Optimizations */
.card,
.btn,
.nav-links a {
    will-change: transform;
}

/* Optimize rendering performance */
.card-grid,
.footer-content {
    contain: layout;
}

/* Optimize images */
img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Lazy loading placeholder */
img[loading="lazy"] {
    background: var(--color-bg-secondary);
    aspect-ratio: attr(width) / attr(height);
}

/* ========================================
   PHASE 2: COMPONENT IMPLEMENTATION
   ======================================== */

/* Hero Section */
.hero {
    background: var(--gradient-hero);
    color: var(--color-text-primary);
    padding: var(--space-16) 0 var(--space-12) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.hero-title {
    font-family: var(--font-primary), -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: var(--text-4xl);
    font-weight: 900;
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    color: var(--color-primary-dark);
    text-shadow: none;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-family: var(--font-primary), -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: var(--text-xl);
    font-weight: 300;
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
    color: var(--color-text-secondary);
    text-shadow: none;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-10);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: var(--text-xs);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.hero-cta:hover::before {
    left: 100%;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.hero-cta i {
    font-size: var(--text-xl);
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    margin: var(--space-16) 0;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-cta);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-lighter);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: var(--gradient-card);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    color: var(--color-primary);
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-cta);
    border-radius: var(--radius-xl);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover .feature-icon::after {
    opacity: 1;
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-semibold);
    transition: all var(--transition-fast);
}

.feature-link:hover {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

/* Content Cards */
.content-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
    margin: var(--space-12) 0;
}

.content-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-lighter);
}

.content-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.content-card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: var(--text-xl);
}

.content-card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.content-card-meta {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.content-card-description {
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.content-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.content-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.content-card-tag {
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.content-card-action {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.content-card-action:hover {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

/* Stats Section */
.stats-section {
    background: var(--color-bg-secondary);
    padding: var(--space-12) 0;
    margin: var(--space-16) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    color: var(--color-primary);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-2);
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Call to Action Section */
.cta-section {
    background: var(--gradient-hero);
    color: white;
    padding: var(--space-16) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="pattern" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23pattern)"/></svg>');
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.cta-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
}

.cta-description {
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    line-height: var(--leading-relaxed);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

.cta-buttons .btn {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    min-width: 160px;
}

/* Enhanced Navigation */
.nav-links a.active {
    background: var(--color-primary-lighter);
    color: var(--color-primary-dark);
}

.nav-links a.active::before {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--text-xl);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-toggle:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

.nav-links.mobile-hidden {
    display: none;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-primary-lighter);
    border-top: 2px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: var(--space-12) 0 var(--space-8) 0;
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .hero-badges {
        gap: var(--space-2);
    }

    .hero-badge {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
    }

    .features-grid,
    .content-cards {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-bg-tertiary);
        flex-direction: column;
        padding: var(--space-4) 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-links:not(.mobile-hidden) {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        padding: var(--space-3) var(--space-6);
        border-bottom: 1px solid var(--color-bg-tertiary);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }
}

@media (max-width: 480px) {
    .hero-badges {
        flex-direction: column;
        align-items: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .content-card-header {
        flex-direction: column;
        text-align: center;
    }

    .content-card-footer {
        flex-direction: column;
        gap: var(--space-4);
        align-items: flex-start;
    }
}

/* Print Styles Enhancement */
@media print {
    .hero,
    .features-grid,
    .content-cards,
    .stats-section,
    .cta-section {
        display: none;
    }

    .content {
        max-width: none;
    }
}

/* Quiz Styles */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
}

.quiz-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.quiz-header h1 {
    font-size: var(--text-4xl);
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.quiz-progress {
    margin-top: var(--space-6);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-2);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-cta);
    width: 0%;
    transition: width var(--transition-base);
    border-radius: var(--radius-full);
}

.progress-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-medium);
}

.question-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-6);
}

.question-card h2 {
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
}

.options {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.option {
    position: relative;
    padding: var(--space-4);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--color-bg-secondary);
}

.option:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option input[type="radio"]:checked + label {
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

.option input[type="radio"]:checked ~ * {
    border-color: var(--color-primary);
    background: rgba(79, 70, 229, 0.05);
}

.option label {
    cursor: pointer;
    margin: 0;
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
}

.quiz-results {
    text-align: center;
}

.results-header {
    margin-bottom: var(--space-8);
}

.score-display {
    margin: var(--space-6) 0;
}

.score-circle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-cta);
    color: white;
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-xl);
}

.score-total {
    font-size: var(--text-lg);
    opacity: 0.9;
}

.results-details {
    text-align: left;
    margin: var(--space-8) 0;
}

.result-item {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    border-left: 4px solid;
}

.result-item.correct {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--color-success);
}

.result-item.incorrect {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--color-error);
}

.result-item h4 {
    margin: 0 0 var(--space-2) 0;
    font-size: var(--text-lg);
}

.result-item p {
    margin: var(--space-2) 0;
    font-size: var(--text-sm);
}

.leaderboard-section {
    margin: var(--space-8) 0;
}

.leaderboard-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    border-bottom: 1px solid var(--color-bg-tertiary);
    font-size: var(--text-sm);
}

.leaderboard-entry .rank {
    font-weight: var(--font-bold);
    color: var(--color-primary);
    min-width: 40px;
}

.leaderboard-entry .name {
    flex: 1;
    font-weight: var(--font-medium);
}

.leaderboard-entry .score {
    font-weight: var(--font-semibold);
    color: var(--color-success);
    min-width: 60px;
    text-align: right;
}

.leaderboard-entry .time {
    color: var(--color-text-tertiary);
    min-width: 50px;
    text-align: right;
}

.leaderboard-entry .date {
    color: var(--color-text-tertiary);
    min-width: 100px;
    text-align: right;
}

.quiz-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-top: var(--space-8);
}

.error-message {
    text-align: center;
    padding: var(--space-8);
}

.error-message h2 {
    color: var(--color-error);
    margin-bottom: var(--space-4);
}

/* Quiz Responsive */
@media (max-width: 768px) {
    .quiz-container {
        padding: var(--space-6) var(--space-4);
    }

    .question-card {
        padding: var(--space-6);
    }

    .question-card h2 {
        font-size: var(--text-xl);
    }

    .quiz-controls {
        flex-direction: column;
    }

    .score-circle {
        width: 100px;
        height: 100px;
        font-size: var(--text-3xl);
    }

    .leaderboard-entry {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .leaderboard-entry .rank,
    .leaderboard-entry .score,
    .leaderboard-entry .time,
    .leaderboard-entry .date {
        min-width: auto;
    }
}

/* ========================================
   SIDEBAR STYLES
   ======================================== */

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    top: 70px;
    left: 0;
    width: 280px;
    height: calc(100vh - 70px);
    background: var(--color-bg-primary);
    border-right: 1px solid var(--color-bg-tertiary);
    padding: var(--space-6);
    overflow-y: auto;
    z-index: 100;
    transition: transform var(--transition-base), width var(--transition-base);
}

.sidebar.collapsed {
    transform: translateX(-240px);
    width: 40px;
}

.sidebar h2 {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.sidebar h2 i {
    color: var(--color-primary);
}

.sidebar-toggle {
    position: absolute;
    top: var(--space-4);
    right: var(--space-2);
    width: 32px;
    height: 32px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.sidebar-toggle:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.sidebar .nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar .nav-list > li {
    margin-bottom: var(--space-2);
}

.sidebar .nav-list > li > a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.sidebar .nav-list > li > a i {
    width: 20px;
    text-align: center;
    color: var(--color-text-tertiary);
}

.sidebar .nav-list > li > a:hover,
.sidebar .nav-list > li > a.active {
    background: var(--color-primary-lighter);
    color: var(--color-primary-dark);
}

.sidebar .nav-list > li > a:hover i,
.sidebar .nav-list > li > a.active i {
    color: var(--color-primary);
}

.sidebar .nav-list > li.active > a {
    background: var(--color-primary-lighter);
    color: var(--color-primary-dark);
    font-weight: var(--font-semibold);
}

.sidebar .nav-children {
    list-style: none;
    padding-left: var(--space-6);
    margin-top: var(--space-2);
}

.sidebar .nav-children li a {
    display: block;
    padding: var(--space-2) var(--space-3);
    color: var(--color-text-tertiary);
    text-decoration: none;
    font-size: var(--text-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    border-left: 2px solid transparent;
}

.sidebar .nav-children li a:hover {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
    border-left-color: var(--color-primary-light);
}

.sidebar .nav-children li a.active {
    color: var(--color-primary);
    background: var(--color-bg-secondary);
    border-left-color: var(--color-primary);
    font-weight: var(--font-medium);
}

/* Main content when sidebar is present */
.main-content.with-sidebar {
    margin-left: 280px;
    transition: margin-left var(--transition-base);
}

.main-content.with-sidebar.sidebar-collapsed {
    margin-left: 40px;
}

/* ========================================
   SEARCH STYLES
   ======================================== */

.search-container {
    position: relative;
    display: flex;
    align-items: center;
    margin-right: var(--space-3);
}

#search-input {
    padding: var(--space-2) var(--space-8) var(--space-2) var(--space-4);
    border: 2px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: var(--text-sm);
    width: 200px;
    transition: all var(--transition-fast);
}

#search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    width: 250px;
}

.search-icon {
    position: absolute;
    right: var(--space-3);
    color: var(--color-text-tertiary);
    pointer-events: none;
    font-size: var(--text-sm);
}

.search-results {
    position: absolute;
    top: 100%;
    right: 0;
    width: 350px;
    max-height: 400px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    overflow-y: auto;
    margin-top: var(--space-2);
}

.search-results-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-bg-tertiary);
    background: var(--color-bg-secondary);
}

.search-results-header h4 {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
}

.search-results ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.search-results li {
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.search-results li:last-child {
    border-bottom: none;
}

.search-results a {
    display: block;
    padding: var(--space-4);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: background-color var(--transition-fast);
}

.search-results a:hover {
    background: var(--color-bg-secondary);
}

.search-results strong {
    display: block;
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
    color: var(--color-primary);
}

.search-results p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin: 0;
    line-height: var(--leading-normal);
}

/* ========================================
   PAGE PROGRESS STYLES
   ======================================== */

.page-progress {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
    gap: var(--space-4);
    margin-top: var(--space-8);
    padding: var(--space-5);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-bg-tertiary);
}

.page-time,
.page-difficulty {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
}

.page-time {
    color: var(--color-text-secondary);
}

.page-time i {
    color: var(--color-info);
}

.page-difficulty.beginner {
    color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
}

.page-difficulty.intermediate {
    color: var(--color-warning);
    background: rgba(245, 158, 11, 0.1);
}

.page-difficulty.advanced {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
}

#mark-complete-btn {
    padding: var(--space-3) var(--space-5);
}

#mark-complete-btn.completed {
    background: var(--color-success);
    border-color: var(--color-success);
}

#mark-complete-btn.completed:hover {
    filter: brightness(0.9);
}

/* ========================================
   BREADCRUMB STYLES
   ======================================== */

.breadcrumb {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--color-text-tertiary);
    margin: 0 var(--space-1);
}

/* ========================================
   RESPONSIVE SIDEBAR
   ======================================== */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        width: 280px;
        z-index: 1001;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .sidebar.collapsed {
        transform: translateX(-100%);
    }

    .main-content.with-sidebar {
        margin-left: 0;
    }

    .main-content.with-sidebar.sidebar-collapsed {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .search-container {
        display: none;
    }

    .nav-actions {
        gap: var(--space-2);
    }

    .page-progress {
        flex-direction: column;
        align-items: stretch;
    }

    .page-progress .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   DARK MODE ENHANCEMENTS
   ======================================== */

[data-theme="dark"] .sidebar {
    background: var(--color-bg-primary);
    border-right-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .sidebar h2 {
    border-bottom-color: var(--color-primary);
}

[data-theme="dark"] #search-input {
    background: var(--color-bg-secondary);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] #search-input:focus {
    border-color: var(--color-primary);
}

[data-theme="dark"] .search-results {
    background: var(--color-bg-secondary);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .page-progress {
    background: var(--color-bg-secondary);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .breadcrumb {
    background: var(--color-bg-secondary);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}