/* CodeArchaeology Theme - Main Styles */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Light Theme */
    --color-bg: #fafbfc;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f3f4f6;
    --color-text: #1a1a2e;
    --color-text-secondary: #374151;
    --color-text-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-accent: #10b981;
    --color-accent-light: #34d399;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-code-bg: #1e1e1e;
    --color-code-text: #d4d4d4;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Sizing */
    --container-max: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #0c0f1a;
    --color-bg-secondary: #151926;
    --color-bg-tertiary: #1e2433;
    --color-text: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-dark: #60a5fa;
    --color-primary-light: #2563eb;
    --color-border: #2d3548;
    --color-border-light: #1e2433;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

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

a:hover {
    color: var(--color-primary-dark);
}

code, pre {
    font-family: var(--font-mono);
}

code {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    font-size: 0.875em;
    color: var(--color-primary);
    border: 1px solid var(--color-border-light);
}

pre {
    background: var(--color-code-bg);
    color: var(--color-code-text);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255,255,255,0.1);
}

pre code {
    background: none;
    padding: 0;
    color: inherit;
    border: none;
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

main.container {
    flex: 1;
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
}

.section {
    padding: var(--spacing-3xl) 0;
}

/* ===== Header & Navigation ===== */
.site-header {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.9);
    transition: all var(--transition-base);
}

[data-theme="dark"] .site-header {
    background: rgba(21, 25, 38, 0.9);
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-brand:hover {
    text-decoration: none;
    color: var(--color-primary);
}

.brand-logo {
    height: 32px;
    width: auto;
    transition: transform var(--transition-base);
    color: var(--color-primary);
}

.nav-brand:hover .brand-logo {
    transform: scale(1.05);
    color: var(--color-primary-dark);
}

.brand-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    position: relative;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
    background: var(--color-bg-tertiary);
    text-decoration: none;
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast);
}

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

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.theme-toggle {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
    color: var(--color-text-muted);
}

.theme-toggle:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: scale(1.05);
}

.theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="dark"] .theme-icon-dark { display: inline; }

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 6rem 0;
    overflow: hidden;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #1e40af 100%);
    color: white;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #0c0f1a 0%, #1e3a8a 60%, #1e40af 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(255,255,255,0.05) 0%, transparent 30%);
    pointer-events: none;
}

/* Subtle grid pattern overlay */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: left;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.12);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.95);
    animation: fadeInUp 0.6s ease-out;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.1;
    color: white;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease-out 0.1s backwards;
}

.hero .highlight {
    color: #93c5fd;
    position: relative;
}

.hero-tagline {
    font-size: 1.375rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.95);
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.75;
    color: rgba(255,255,255,0.75);
    margin-bottom: 2rem;
    max-width: 520px;
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.4s backwards;
}

.hero-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Hero Code Window */
.hero-visual {
    display: flex;
    justify-content: center;
    animation: fadeInRight 0.8s ease-out 0.3s backwards;
}

.code-window {
    background: #1a1a2e;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow:
        0 25px 50px -12px rgba(0,0,0,0.5),
        0 0 0 1px rgba(255,255,255,0.1);
    width: 100%;
    max-width: 440px;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform var(--transition-slow);
}

.code-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.code-window-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    background: #252540;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.code-window-header .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.code-window:hover .dot {
    transform: scale(1.1);
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.code-window-title {
    margin-left: auto;
    font-size: 0.75rem;
    color: #666;
    font-family: var(--font-mono);
}

.code-window-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.9;
}

.code-window-body code {
    display: block;
    background: none;
    padding: 0;
    color: #e2e8f0;
    border: none;
}

.code-comment {
    color: #6b7280;
}

/* ===== Stats Bar ===== */
.stats-bar {
    background: var(--color-bg-secondary);
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.stat-item:hover {
    background: var(--color-bg-tertiary);
    transform: translateY(-2px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    margin-bottom: 0.75rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 3px;
}

.section-subtitle {
    color: var(--color-text-muted);
    font-size: 1.125rem;
    margin-top: 1rem;
}

/* ===== CTA Section ===== */
.cta-section {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    position: relative;
}

.cta-content h2 {
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    font-size: 1.0625rem;
    line-height: 1.75;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1e3a8a 100%);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    text-decoration: none;
    background: rgba(37, 99, 235, 0.05);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-outline-light {
    background: rgba(255,255,255,0.1);
    color: white;
    border-color: rgba(255,255,255,0.3);
    backdrop-filter: blur(4px);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.2);
    color: white;
    border-color: rgba(255,255,255,0.5);
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

/* ===== Language Grid ===== */
.language-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.language-card {
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.language-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.language-card:hover::before {
    opacity: 1;
}

.language-card-link {
    display: block;
    padding: var(--spacing-lg);
    color: var(--color-text);
}

.language-card-link:hover {
    text-decoration: none;
}

.language-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.language-card h3 {
    margin: 0;
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.language-card:hover h3 {
    color: var(--color-primary);
}

.language-year {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--color-bg-tertiary);
    padding: 0.25rem 0.625rem;
    border-radius: 6px;
}

.language-description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.language-card-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.difficulty {
    font-size: 0.6875rem;
    padding: 0.25rem 0.625rem;
    border-radius: 6px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.difficulty-beginner {
    background: rgba(16, 185, 129, 0.15);
    color: #059669;
}

[data-theme="dark"] .difficulty-beginner {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.difficulty-intermediate {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

[data-theme="dark"] .difficulty-intermediate {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.difficulty-advanced {
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
}

[data-theme="dark"] .difficulty-advanced {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.docker-badge {
    font-size: 1.25rem;
    opacity: 0.8;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.language-card:hover .docker-badge {
    opacity: 1;
    transform: scale(1.1);
}

/* ===== Posts ===== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.post-card, .post-item {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.post-card h3, .post-item h2 {
    margin-bottom: var(--spacing-sm);
}

.post-card h3 a {
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.post-card:hover h3 a {
    color: var(--color-primary);
}

.post-language {
    display: inline-block;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--spacing-sm);
}

.post-card time {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.post-meta {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.read-more {
    font-weight: 600;
    font-size: 0.9375rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap var(--transition-fast);
}

.read-more:hover {
    gap: 0.5rem;
}

/* ===== Single Post ===== */
.single-post {
    max-width: 800px;
    margin: 0 auto;
}

.post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.docker-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-code-bg);
    border-radius: var(--border-radius);
}

.docker-info code {
    background: none;
    color: var(--color-code-text);
    border: none;
}

.series-nav {
    background: var(--color-bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-xl);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    border: 1px solid var(--color-border);
}

.series-label {
    font-weight: 600;
    color: var(--color-text);
}

.series-nav a.current {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
}

.post-content {
    font-size: 1.0625rem;
    line-height: 1.8;
}

.post-content h2, .post-content h3 {
    margin-top: var(--spacing-xl);
}

.post-content ul, .post-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.post-content li {
    margin-bottom: var(--spacing-sm);
}

.post-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.tag {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--color-primary);
    color: white;
}

.post-nav {
    display: flex;
    justify-content: space-between;
}

/* ===== Code Run Block ===== */
.code-run-block {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.code-language {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.6875rem;
    color: var(--color-primary);
    letter-spacing: 0.05em;
    background: rgba(37, 99, 235, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.code-filename {
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

.copy-btn {
    margin-left: auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
    transition: all var(--transition-fast);
    color: var(--color-text-muted);
}

.copy-btn:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.code-run-block pre {
    margin: 0;
    border-radius: 0;
    border: none;
}

.docker-command {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
    font-size: 0.8125rem;
}

.docker-label {
    color: var(--color-text-muted);
    margin-right: var(--spacing-sm);
    font-weight: 600;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    color: var(--color-text);
}

.footer-section p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
}

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

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-section a:hover {
    color: var(--color-primary);
    transform: translateX(2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 0.25rem;
    color: var(--color-text-muted);
}

.footer-bottom a {
    color: var(--color-primary);
    font-weight: 500;
}

/* ===== Section Styles ===== */
.section-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.about-preview {
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius);
}

.about-content {
    max-width: 700px;
}

.about-content ul {
    margin: var(--spacing-md) 0 var(--spacing-lg) var(--spacing-lg);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content {
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .code-window {
        max-width: 380px;
        transform: none;
    }

    .code-window:hover {
        transform: none;
    }

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

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--color-border);
        display: none;
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-md);
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-tagline {
        font-size: 1.125rem;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 0.375rem 0.75rem;
    }

    .code-window {
        max-width: 100%;
    }

    .code-window-body {
        font-size: 0.75rem;
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

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

    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

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

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

/* ===== Focus States for Accessibility ===== */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===== Selection ===== */
::selection {
    background: rgba(37, 99, 235, 0.2);
    color: var(--color-text);
}

/* ===== Scrollbar (Webkit) ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 5px;
}

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