/* ========================================
   C! (C-Bang) Website — Global Styles
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a28;
    --bg-card: #14141f;
    --bg-code: #0d0d16;
    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #6a6a80;
    --accent-blue: #4d7cff;
    --accent-purple: #8b5cf6;
    --accent-green: #22d3a0;
    --accent-cyan: #06b6d4;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-pink: #ec4899;
    --gradient-primary: linear-gradient(135deg, #4d7cff, #8b5cf6);
    --gradient-green: linear-gradient(135deg, #22d3a0, #06b6d4);
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-hero: linear-gradient(160deg, #0a0a0f 0%, #12121a 30%, #1a1030 60%, #0a0a0f 100%);
    --border-color: #2a2a3e;
    --border-accent: #3a3a55;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow-blue: 0 0 30px rgba(77,124,255,0.15);
    --shadow-glow-green: 0 0 30px rgba(34,211,160,0.15);
    --shadow-glow-purple: 0 0 30px rgba(139,92,246,0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --max-width: 1200px;
    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
    color: var(--accent-purple);
}

img {
    max-width: 100%;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 700;
    color: var(--text-primary);
}

h1 { font-size: 3.5rem; letter-spacing: -0.03em; }
h2 { font-size: 2.25rem; letter-spacing: -0.02em; }
h3 { font-size: 1.5rem; letter-spacing: -0.01em; }
h4 { font-size: 1.2rem; }

p {
    color: var(--text-secondary);
}

::selection {
    background: rgba(77,124,255,0.3);
    color: var(--text-primary);
}

/* --- Container --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background var(--transition-base);
}

.nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo .logo-c {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-logo .logo-bang {
    color: var(--accent-green);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-github {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary) !important;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.nav-github:hover {
    background: var(--bg-card);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow-blue);
    color: var(--text-primary) !important;
}

.nav-github svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Mobile menu */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(77,124,255,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(77,124,255,0.4);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-accent);
}

.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: rgba(77,124,255,0.08);
    color: var(--text-primary);
}

.btn-github {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 1rem;
}

.btn-github:hover {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-glow-green);
    color: var(--text-primary);
}

.btn-github svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.1rem;
}

/* --- Hero Section --- */
.hero {
    padding: 160px 0 100px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 800px 600px at 20% 50%, rgba(77,124,255,0.06), transparent),
        radial-gradient(ellipse 600px 400px at 80% 30%, rgba(139,92,246,0.06), transparent),
        radial-gradient(ellipse 500px 300px at 60% 80%, rgba(34,211,160,0.04), transparent);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(77,124,255,0.1);
    border: 1px solid rgba(77,124,255,0.2);
    border-radius: 50px;
    color: var(--accent-blue);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease forwards;
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero h1 .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h1 .green-text {
    color: var(--accent-green);
    -webkit-text-fill-color: var(--accent-green);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    max-width: 640px;
    margin-bottom: 40px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 64px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

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

.hero-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.hero-stat-value .accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* --- Grid for hero with code --- */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-code {
    animation: fadeInUp 0.6s ease 0.3s both;
}

/* --- Section Styles --- */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* --- Feature Cards --- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.feature-icon.blue {
    background: rgba(77,124,255,0.12);
    color: var(--accent-blue);
}

.feature-icon.green {
    background: rgba(34,211,160,0.12);
    color: var(--accent-green);
}

.feature-icon.purple {
    background: rgba(139,92,246,0.12);
    color: var(--accent-purple);
}

.feature-icon.cyan {
    background: rgba(6,182,212,0.12);
    color: var(--accent-cyan);
}

.feature-icon.orange {
    background: rgba(245,158,11,0.12);
    color: var(--accent-orange);
}

.feature-icon.pink {
    background: rgba(236,72,153,0.12);
    color: var(--accent-pink);
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* --- Code Blocks --- */
.code-block {
    background: var(--bg-code);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    line-height: 1.7;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border-color);
}

.code-dots {
    display: flex;
    gap: 6px;
}

.code-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.code-dots span:nth-child(1) { background: #ef4444; }
.code-dots span:nth-child(2) { background: #f59e0b; }
.code-dots span:nth-child(3) { background: #22c55e; }

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

.code-body {
    padding: 20px 24px;
    overflow-x: auto;
}

.code-body pre {
    margin: 0;
    white-space: pre;
    font-family: var(--font-mono);
}

/* Syntax highlighting — CSS-only */
.code-body .kw   { color: #c792ea; }  /* keywords */
.code-body .fn   { color: #82aaff; }  /* functions */
.code-body .ty   { color: #ffcb6b; }  /* types */
.code-body .str  { color: #c3e88d; }  /* strings */
.code-body .num  { color: #f78c6c; }  /* numbers */
.code-body .cm   { color: #546e7a; font-style: italic; }  /* comments */
.code-body .ann  { color: #89ddff; }  /* annotations */
.code-body .op   { color: #89ddff; }  /* operators */
.code-body .par  { color: #d9d9e0; }  /* parentheses/brackets */
.code-body .var  { color: #d9d9e0; }  /* variables */
.code-body .mac  { color: #ff5572; }  /* macros */
.code-body .err  { color: #ef4444; font-weight: 700; }  /* errors */
.code-body .prop { color: #f07178; }  /* properties */
.code-body .lbl  { color: #c3e88d; }  /* labels */

/* --- Code Showcase (split layout) --- */
.code-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.code-showcase-text {
    padding-top: 20px;
}

.code-showcase-text .section-label {
    text-align: left;
}

.code-showcase-text h2 {
    margin-bottom: 16px;
}

.code-showcase-text p {
    margin-bottom: 24px;
    font-size: 1.05rem;
}

.code-showcase-text ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.code-showcase-text li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.code-showcase-text li .check {
    color: var(--accent-green);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

/* --- Tabs for code examples --- */
.code-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
    width: fit-content;
}

.code-tab {
    padding: 10px 20px;
    background: transparent;
    color: var(--text-muted);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.code-tab:hover {
    color: var(--text-primary);
}

.code-tab.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.code-panel {
    display: none;
}

.code-panel.active {
    display: block;
}

/* --- Security Badges / Tags --- */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 32px;
}

.security-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: rgba(34,211,160,0.06);
    border: 1px solid rgba(34,211,160,0.15);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.security-badge:hover {
    background: rgba(34,211,160,0.1);
    border-color: rgba(34,211,160,0.3);
}

.security-badge .icon {
    color: var(--accent-green);
    font-weight: 700;
    flex-shrink: 0;
}

/* --- CTA Section --- */
.cta-section {
    padding: 100px 0;
    text-align: center;
    background: var(--bg-primary);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 600px 400px at 50% 50%, rgba(77,124,255,0.08), transparent);
    pointer-events: none;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.15rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
    padding: 64px 0 32px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .nav-logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--text-muted);
}

.footer-bottom a:hover {
    color: var(--text-primary);
}

/* --- Page Header (for sub-pages) --- */
.page-header {
    padding: 140px 0 60px;
    background: var(--gradient-hero);
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse 800px 400px at 30% 60%, rgba(77,124,255,0.06), transparent);
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 12px;
}

.page-header p {
    font-size: 1.15rem;
    max-width: 600px;
}

/* --- Content Pages --- */
.content-section {
    padding: 80px 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 48px;
}

.content-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 24px);
    align-self: start;
}

.content-sidebar nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.content-sidebar nav a {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    border-left: 2px solid transparent;
    transition: all var(--transition-fast);
}

.content-sidebar nav a:hover,
.content-sidebar nav a.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border-left-color: var(--accent-blue);
}

.content-sidebar nav ul ul {
    margin-left: 16px;
    margin-top: 4px;
}

.content-sidebar nav ul ul a {
    font-size: 0.85rem;
    padding: 6px 16px;
}

.content-body {
    max-width: 800px;
}

.content-body h2 {
    margin-top: 48px;
    margin-bottom: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.content-body h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.content-body h3 {
    margin-top: 32px;
    margin-bottom: 12px;
}

.content-body p {
    margin-bottom: 16px;
}

.content-body ul, .content-body ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.content-body li {
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}

.content-body .code-block {
    margin-bottom: 24px;
}

/* inline code */
.content-body code:not([class]) {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.88em;
    color: var(--accent-blue);
    border: 1px solid var(--border-color);
}

/* --- Doc Cards --- */
.doc-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.doc-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-decoration: none;
    transition: all var(--transition-base);
}

.doc-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-blue);
    color: inherit;
}

.doc-card .icon {
    font-size: 2rem;
    margin-bottom: 16px;
    display: block;
}

.doc-card h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.doc-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* --- Community Cards --- */
.community-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.community-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition-base);
}

.community-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.community-card h3 {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.community-card p {
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.community-card .btn {
    margin-top: 8px;
}

/* --- Info boxes --- */
.info-box {
    padding: 20px 24px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border-left: 3px solid;
}

.info-box.tip {
    background: rgba(34,211,160,0.06);
    border-left-color: var(--accent-green);
}

.info-box.warning {
    background: rgba(245,158,11,0.06);
    border-left-color: var(--accent-orange);
}

.info-box.note {
    background: rgba(77,124,255,0.06);
    border-left-color: var(--accent-blue);
}

.info-box p {
    margin: 0;
    font-size: 0.95rem;
}

.info-box strong {
    color: var(--text-primary);
}

/* --- Table --- */
.content-body table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.content-body th,
.content-body td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.content-body th {
    color: var(--text-primary);
    font-weight: 600;
    background: var(--bg-secondary);
}

.content-body td {
    color: var(--text-secondary);
}

/* --- Comparison Grid --- */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.comparison-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.comparison-card h3 {
    font-size: 1rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.comparison-card .old {
    color: var(--accent-red);
}

.comparison-card .new {
    color: var(--accent-green);
}

.comparison-card p {
    font-size: 0.9rem;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll-triggered animation */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .code-showcase {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

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

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.75rem; }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 16px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-stats {
        gap: 32px;
        flex-wrap: wrap;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .content-sidebar {
        position: static;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .section {
        padding: 60px 0;
    }

    .community-cards {
        grid-template-columns: 1fr;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .code-tabs {
        flex-wrap: wrap;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

    .doc-cards {
        grid-template-columns: 1fr;
    }
}