/* ============================================
   EdgeVDB Documentation — Premium Design System
   ============================================ */

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

:root {
    /* Color Palette — Deep Space Theme */
    --bg-primary: #0a0b14;
    --bg-secondary: #0f1021;
    --bg-tertiary: #141530;
    --bg-card: rgba(20, 21, 48, 0.6);
    --bg-card-hover: rgba(30, 32, 68, 0.8);
    --bg-glass: rgba(20, 21, 48, 0.4);

    --text-primary: #e8e9f3;
    --text-secondary: #9597b3;
    --text-tertiary: #6b6d8a;
    --text-muted: #4a4c66;

    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-light: #a5b4fc;
    --accent-glow: rgba(99, 102, 241, 0.3);

    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --gradient-hero: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-cool: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --gradient-green: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);

    --border-color: rgba(99, 102, 241, 0.12);
    --border-hover: rgba(99, 102, 241, 0.3);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --nav-height: 72px;
    --container-max: 1200px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

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

::selection {
    background: rgba(99, 102, 241, 0.3);
    color: #fff;
}

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

/* ── Section Basics ── */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-secondary);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

/* ══════════════════════════════════════
   NAVIGATION
   ══════════════════════════════════════ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 11, 20, 0.85);
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    box-shadow: 0 1px 0 var(--border-color), var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.logo-accent {
    color: var(--accent-secondary);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-links a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
    background: var(--accent-primary) !important;
    color: #fff !important;
    padding: 8px 20px !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
    transition: background var(--transition-fast), transform var(--transition-fast) !important;
}

.nav-cta:hover {
    background: var(--accent-secondary) !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* ══════════════════════════════════════
   HERO
   ══════════════════════════════════════ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: calc(var(--nav-height) + 40px) 24px 60px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-glow-1 {
    width: 600px;
    height: 600px;
    background: rgba(99, 102, 241, 0.25);
    top: -200px;
    left: -100px;
}

.hero-glow-2 {
    width: 500px;
    height: 500px;
    background: rgba(139, 92, 246, 0.2);
    bottom: -150px;
    right: -100px;
    animation-delay: -3s;
}

.hero-glow-3 {
    width: 400px;
    height: 400px;
    background: rgba(236, 72, 153, 0.15);
    top: 30%;
    right: 10%;
    animation-delay: -5s;
}

@keyframes glowPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.15); opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.25);
    padding: 6px 18px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 28px;
    animation: fadeInDown 0.6s ease-out;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto 48px;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-subtitle strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-unit {
    font-size: 1rem;
    font-weight: 600;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Hero Actions */
.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

.btn-arrow {
    transition: transform var(--transition-fast);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* Hero Install */
.hero-install {
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.install-tab-bar {
    display: flex;
    gap: 2px;
    background: rgba(255, 255, 255, 0.04);
    padding: 3px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    border: 1px solid var(--border-color);
    border-bottom: none;
}

.install-tab {
    flex: 1;
    padding: 8px 16px;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.install-tab.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-light);
}

.install-tab:hover:not(.active) {
    color: var(--text-secondary);
}

.install-code-wrapper {
    position: relative;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    overflow: hidden;
}

.install-code {
    padding: 16px 60px 16px 20px;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-light);
    overflow-x: auto;
    white-space: nowrap;
}

.install-code.hidden {
    display: none;
}

.copy-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-tertiary);
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Hero Scroll Hint */
.hero-scroll-hint {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    animation: fadeInUp 1s ease-out 1s both;
}

.scroll-arrow {
    animation: bounceDown 2s ease-in-out infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ══════════════════════════════════════
   FEATURES
   ══════════════════════════════════════ */
.features-section {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition-slow);
    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 {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.feature-card-large {
    grid-column: span 2;
}

.feature-icon-wrap {
    margin-bottom: 20px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    color: var(--accent-secondary);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-card code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background: rgba(99, 102, 241, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-light);
}

.feature-specs {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.spec {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 100px;
    color: var(--accent-light);
}

/* ══════════════════════════════════════
   ARCHITECTURE
   ══════════════════════════════════════ */
.architecture-section {
    background: var(--bg-primary);
}

.arch-diagram {
    max-width: 900px;
    margin: 0 auto 64px;
}

.arch-layer {
    margin-bottom: 8px;
}

.arch-layer-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-tertiary);
    margin-bottom: 12px;
    text-align: center;
}

.arch-blocks {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.arch-core-blocks {
    grid-template-columns: repeat(4, 1fr);
}

.arch-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
    transition: all var(--transition-base);
    cursor: default;
    position: relative;
}

.arch-block:hover {
    border-color: var(--accent-primary);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.arch-block[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-hover);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 10;
    box-shadow: var(--shadow-md);
    pointer-events: none;
}

.arch-icon {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 6px;
}

.arch-block span {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
}

.arch-sub {
    font-size: 0.7rem !important;
    color: var(--text-tertiary) !important;
    font-weight: 400 !important;
    margin-top: 2px;
}

.arch-core-block {
    padding: 12px 8px;
}

.arch-core-block span {
    font-size: 0.75rem;
}

.arch-connector {
    padding: 0 40px;
    margin: 4px 0;
    opacity: 0.5;
}

/* Query Flow */
.arch-flow {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.arch-flow h3 {
    text-align: center;
    font-size: 1.1rem;
    color: var(--accent-light);
    margin-bottom: 32px;
}

.flow-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.flow-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    flex: 0 1 auto;
}

.flow-num {
    width: 28px;
    height: 28px;
    min-width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
}

.flow-content h4 {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.flow-content p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    max-width: 140px;
}

.flow-arrow {
    color: var(--accent-primary);
    font-size: 1.2rem;
    padding-top: 2px;
    opacity: 0.5;
}

/* ══════════════════════════════════════
   QUICK START
   ══════════════════════════════════════ */
.quickstart-section {
    background: var(--bg-secondary);
}

.code-tabs {
    max-width: 800px;
    margin: 0 auto;
}

.tabs-bar {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.03);
    padding: 4px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border: 1px solid var(--border-color);
    border-bottom: none;
}

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: transparent;
    color: var(--text-tertiary);
    border: none;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.tab.active {
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-light);
}

.tab:hover:not(.active) {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

.tab-icon {
    font-size: 1rem;
}

.tabs-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    overflow: hidden;
}

.tab-panel {
    display: none;
}

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

.code-block {
    position: relative;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
}

.code-lang {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.code-block .copy-btn {
    position: static;
    transform: none;
    font-size: 0.75rem;
    padding: 4px 12px;
    font-family: inherit;
}

.code-block pre {
    padding: 24px;
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-primary);
    tab-size: 4;
}

/* Syntax colors */
.kw { color: #c084fc; }
.str { color: #86efac; }
.num { color: #fbbf24; }
.cm { color: #6b7280; font-style: italic; }
.fn { color: #60a5fa; }
.pp { color: #f472b6; }
.esc { color: #fbbf24; }

/* ══════════════════════════════════════
   API REFERENCE
   ══════════════════════════════════════ */
.api-section {
    background: var(--bg-primary);
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

.api-group:hover {
    border-color: var(--border-hover);
}

.api-group-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.api-group-icon {
    font-size: 1.1rem;
}

.api-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.api-item {
    padding: 12px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.15);
    transition: background var(--transition-fast);
}

.api-item:hover {
    background: rgba(99, 102, 241, 0.06);
}

.api-sig {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-light);
    display: block;
    margin-bottom: 4px;
    word-break: break-all;
}

.api-item p {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* Config Table */
.config-table {
    gap: 6px !important;
}

.config-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 8px;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    background: rgba(0, 0, 0, 0.15);
    font-size: 0.78rem;
}

.config-row code {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-light);
}

.config-row span:nth-child(2) {
    font-weight: 700;
    color: #fbbf24;
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.config-row span:nth-child(3) {
    color: var(--text-tertiary);
    font-size: 0.72rem;
}

/* ══════════════════════════════════════
   BENCHMARKS
   ══════════════════════════════════════ */
.benchmarks-section {
    background: var(--bg-secondary);
}

.bench-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 48px;
}

.bench-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.bench-card:last-child {
    grid-column: span 2;
}

.bench-card-header {
    margin-bottom: 28px;
}

.bench-card-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.bench-subtitle {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* Benchmark Bars */
.bench-bars {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.bench-bar-row {
    display: grid;
    grid-template-columns: 130px 1fr 70px;
    gap: 12px;
    align-items: center;
}

.bench-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: right;
}

.bench-bar-track {
    height: 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 6px;
    overflow: hidden;
}

.bench-bar {
    height: 100%;
    border-radius: 6px;
    width: var(--bar-width);
    transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.bench-bar-hero {
    background: var(--gradient-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.bench-bar-accent {
    background: var(--gradient-cool);
}

.bench-bar-muted {
    background: rgba(255, 255, 255, 0.08);
}

.bench-value {
    font-size: 0.8rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

/* Benchmark Table */
.bench-table {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.bench-table-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.2);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
}

.bench-table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    padding: 10px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: background var(--transition-fast);
}

.bench-table-row:hover {
    background: rgba(99, 102, 241, 0.04);
}

.bench-table-row .highlight {
    color: var(--accent-light);
    font-weight: 700;
    font-family: var(--font-mono);
}

/* Size Chart */
.size-chart {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 24px;
    height: 200px;
    padding-top: 20px;
}

.size-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.size-bar-container {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: flex-end;
}

.size-bar {
    width: 100%;
    height: var(--size-height);
    min-height: 24px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 6px;
    transition: height 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.size-bar-accent {
    background: var(--gradient-cool);
}

.size-bar-muted {
    background: rgba(255, 255, 255, 0.08);
}

.size-val {
    font-size: 0.7rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: #fff;
    white-space: nowrap;
}

.size-bar-muted .size-val {
    color: var(--text-tertiary);
}

.size-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-align: center;
    line-height: 1.3;
}

/* Comparison Table */
.bench-comparison {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.bench-comparison h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.comparison-table-wrap {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    background: rgba(0, 0, 0, 0.2);
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-table td {
    color: var(--text-secondary);
}

.highlight-col {
    background: rgba(99, 102, 241, 0.06) !important;
}

.comparison-table th.highlight-col {
    color: var(--accent-light) !important;
}

.check {
    color: #10b981;
    font-weight: 700;
}

.cross {
    color: #ef4444;
    opacity: 0.5;
}

/* ══════════════════════════════════════
   PLATFORMS
   ══════════════════════════════════════ */
.platforms-section {
    background: var(--bg-primary);
}

.platform-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.platform-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-slow);
}

.platform-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
}

.platform-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.platform-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.platform-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.platform-specs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 12px;
}

.platform-specs span {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 3px 8px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 100px;
    color: var(--accent-light);
}

.platform-size {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

/* ══════════════════════════════════════
   BUILDING
   ══════════════════════════════════════ */
.building-section {
    background: var(--bg-secondary);
}

.build-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

.build-card h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.code-small pre {
    padding: 16px;
    margin: 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.7;
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--radius-sm);
}

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

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.footer-license {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-link {
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-light);
}

.footer-col h4 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

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

.footer-col a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-bottom a {
    color: var(--accent-secondary);
    text-decoration: none;
}

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

/* ══════════════════════════════════════
   BACK TO TOP
   ══════════════════════════════════════ */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all var(--transition-base);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

/* ══════════════════════════════════════
   ANIMATIONS
   ══════════════════════════════════════ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Intersection Observer animated elements */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ══════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════ */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card-large {
        grid-column: span 1;
    }

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

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

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

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

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

    .arch-core-blocks {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 11, 20, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        border-bottom: 1px solid var(--border-color);
    }

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

    .nav-links a {
        width: 100%;
        padding: 12px 16px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        flex: 1 1 40%;
    }

    .hero-actions {
        flex-direction: column;
    }

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

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

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

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

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

    .bench-card:last-child {
        grid-column: span 1;
    }

    .bench-bar-row {
        grid-template-columns: 90px 1fr 60px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

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

    .flow-steps {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .flow-arrow {
        display: none;
    }

    .flow-content p {
        max-width: none;
    }

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

    .install-tab-bar {
        flex-wrap: wrap;
    }

    .size-chart {
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

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

    .about-logo-mark {
        font-size: 2rem !important;
    }
}

/* ══════════════════════════════════════
   XFORMAI BRANDING
   ══════════════════════════════════════ */

/* Navbar "by XformAI" */
.nav-by {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-tertiary);
    padding: 2px 8px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 100px;
    margin-left: 2px;
    letter-spacing: 0.02em;
}

.nav-by strong {
    color: var(--accent-secondary);
    font-weight: 700;
}

/* Navbar XformAI link */
.nav-xformai {
    color: var(--accent-light) !important;
    border: 1px solid rgba(99, 102, 241, 0.2) !important;
    background: rgba(99, 102, 241, 0.06) !important;
    padding: 8px 16px !important;
    border-radius: var(--radius-sm) !important;
    font-weight: 600 !important;
}

.nav-xformai:hover {
    background: rgba(99, 102, 241, 0.12) !important;
    border-color: rgba(99, 102, 241, 0.35) !important;
    color: #fff !important;
}

/* Hero Company Byline */
.hero-byline {
    font-size: 1.05rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease-out 0.05s both;
    letter-spacing: 0.01em;
}

.hero-company-link {
    text-decoration: none;
    position: relative;
    padding-bottom: 2px;
    transition: all var(--transition-base);
}

.company-name-highlight {
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.company-name-accent {
    font-weight: 800;
    font-size: 1.15rem;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-company-link:hover .company-name-highlight {
    color: #fff;
}

.hero-company-link:hover .company-name-accent {
    filter: brightness(1.3);
}

.hero-company-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-hero);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-base);
}

.hero-company-link:hover::after {
    transform: scaleX(1);
}

/* ══════════════════════════════════════
   ABOUT XFORMAI SECTION
   ══════════════════════════════════════ */
.about-section {
    background: var(--bg-primary);
    overflow: hidden;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-hero);
}

.about-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

/* Logo Section */
.about-logo-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 24px;
    padding: 32px 0;
}

.about-logo-mark {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
}

.about-logo-x {
    color: var(--text-primary);
}

.about-logo-form {
    color: var(--text-secondary);
}

.about-logo-ai {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-website-link {
    display: inline-block;
    color: var(--accent-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 10px 24px;
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 100px;
    transition: all var(--transition-base);
}

.about-website-link:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* About Details */
.about-details h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-details > p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* Highlights */
.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 28px;
}

.about-highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid rgba(99, 102, 241, 0.06);
    transition: all var(--transition-base);
}

.about-highlight-item:hover {
    border-color: rgba(99, 102, 241, 0.15);
    background: rgba(99, 102, 241, 0.04);
}

.about-highlight-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.about-highlight-item strong {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.about-highlight-item p {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    line-height: 1.5;
    margin: 0;
}

/* CTA Row */
.about-cta-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

/* Responsive About */
@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-card {
        padding: 28px;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .about-cta-row {
        flex-direction: column;
    }

    .about-cta-row .btn {
        width: 100%;
        justify-content: center;
    }

    .nav-by {
        display: none;
    }

    .hero-byline {
        font-size: 0.9rem;
    }
}