/* ========================================
   FluxDB Website Styles
   High Performance AI-Driven Ontology Database
   ======================================== */

/* ========================================
   CSS Variables & Design System
   ======================================== */

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Background Colors */
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-card-hover: #293548;
    --bg-overlay: rgba(15, 23, 42, 0.95);

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #0ea5e9);
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    --gradient-text: linear-gradient(135deg, #6366f1, #8b5cf6);

    /* 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;
    --spacing-4xl: 6rem;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

/* ========================================
   Base Styles & Reset
   ======================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
    list-style: none;
}

/* ========================================
   Container
   ======================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    padding: var(--spacing-md) 0;
}

.navbar.scrolled {
    background-color: var(--bg-overlay);
    box-shadow: var(--shadow-lg);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo i {
    color: var(--primary);
    font-size: 2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-links a {
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-overlay);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }

    .nav-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.875rem;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(99, 102, 241, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

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

.btn-white {
    background: white;
    color: var(--bg-dark);
}

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

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

/* ========================================
   Section Styles
   ======================================== */

.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-4xl) 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    bottom: 20%;
    right: 15%;
    animation-delay: 5s;
}

.shape-3 {
    width: 350px;
    height: 350px;
    background: var(--secondary);
    top: 50%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.1);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.9);
    }
    75% {
        transform: translate(20px, 30px) scale(1.05);
    }
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto var(--spacing-3xl);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    font-weight: 600;
}

.hero-badge i {
    color: var(--primary);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.hero-visual {
    max-width: 1000px;
    margin: 0 auto;
}

.browser-frame {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.browser-header {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.browser-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.browser-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-muted);
}

.browser-dots span:nth-child(1) {
    background: #ef4444;
}

.browser-dots span:nth-child(2) {
    background: #f59e0b;
}

.browser-dots span:nth-child(3) {
    background: #10b981;
}

.browser-address {
    flex: 1;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.browser-content {
    padding: var(--spacing-xl);
}

.code-preview {
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.8;
}

.code-line {
    color: var(--text-secondary);
}

.code-comment {
    color: var(--text-muted);
}

.code-keyword {
    color: var(--primary-light);
    font-weight: 600;
}

.code-separator {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-md) 0;
}

.code-result {
    margin-top: var(--spacing-md);
}

.result-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--success);
    font-weight: 600;
}

.result-icon {
    font-size: 1.25rem;
}

/* ========================================
   Features Section
   ======================================== */

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

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

.feature-card.featured {
    grid-column: span 2;
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.05));
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

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

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    font-size: 1.75rem;
    color: var(--primary-light);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.feature-list i {
    color: var(--success);
    font-size: 1.125rem;
}

/* ========================================
   Performance Section
   ======================================== */

.performance {
    background: var(--bg-darker);
}

.performance-comparison {
    margin-bottom: var(--spacing-3xl);
}

.comparison-table {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    background: rgba(99, 102, 241, 0.1);
    font-weight: 700;
    border-bottom: 2px solid rgba(99, 102, 241, 0.3);
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.table-row:last-child {
    border-bottom: none;
}

.table-cell {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.table-cell:first-child {
    justify-content: flex-start;
    text-align: left;
}

.table-cell.highlight {
    background: rgba(99, 102, 241, 0.05);
    font-weight: 600;
    color: var(--primary-light);
}

.table-cell.success {
    color: var(--success);
}

.table-cell.warning {
    color: var(--warning);
}

.table-cell.error {
    color: var(--error);
}

@media (max-width: 768px) {
    .table-header,
    .table-row {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        font-size: 0.875rem;
    }

    .table-cell {
        padding: var(--spacing-md);
    }
}

.performance-details {
    margin-top: var(--spacing-3xl);
}

.subsection-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.perf-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.metric-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.metric-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 1rem;
}

.metric-header i {
    color: var(--primary-light);
    font-size: 1.25rem;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--success);
    margin-bottom: var(--spacing-sm);
}

.metric-complexity {
    font-family: 'Monaco', 'Courier New', monospace;
    color: var(--primary-light);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.metric-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.load-performance,
.storage-efficiency {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.load-performance h4,
.storage-efficiency h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.load-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.load-stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-lg);
}

.load-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.load-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success);
}

.efficiency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.efficiency-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-md);
}

.efficiency-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.efficiency-value {
    color: var(--primary-light);
    font-weight: 700;
}

.performance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.stat-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    margin: 0 auto var(--spacing-lg);
    font-size: 2rem;
    color: var(--primary-light);
}

/* ========================================
   Integrations Section
   ======================================== */

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

.integrations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.integration-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

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

.integration-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 165, 233, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    font-size: 1.75rem;
    color: var(--secondary);
}

.integration-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.integration-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.integration-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-light);
}

/* ========================================
   Use Cases Section
   ======================================== */

.use-cases {
    background: var(--bg-darker);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.use-case-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.use-case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.use-case-card:hover::before {
    opacity: 1;
}

.use-case-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    margin-bottom: var(--spacing-md);
}

.use-case-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.use-case-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.use-case-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.use-case-benefits li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.use-case-benefits i {
    color: var(--primary-light);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* ========================================
   Examples Section
   ======================================== */

.examples {
    background: var(--bg-darker);
}

.example-tabs {
    margin-bottom: var(--spacing-3xl);
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: 2px solid rgba(99, 102, 241, 0.3);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.tab-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.6);
    color: var(--text-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.8),
                0 0 60px rgba(99, 102, 241, 0.5),
                0 0 90px rgba(99, 102, 241, 0.3);
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.8),
                    0 0 60px rgba(99, 102, 241, 0.5),
                    0 0 90px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 1),
                    0 0 80px rgba(99, 102, 241, 0.7),
                    0 0 120px rgba(99, 102, 241, 0.4);
    }
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.example-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

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

.example-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-light);
}

.example-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
}

.example-card .code-block {
    margin: 0;
    max-height: 400px;
    overflow-y: auto;

    /* Vertical scrollbar for Firefox */
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 50, 50, 1) rgba(0, 0, 0, 0.8);
}

/* Vertical scrollbar for Webkit browsers */
.example-card .code-block::-webkit-scrollbar {
    width: 8px;
}

.example-card .code-block::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.8);
    border-radius: var(--radius-full);
}

.example-card .code-block::-webkit-scrollbar-thumb {
    background: rgba(255, 50, 50, 1);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    box-shadow: 0 0 15px rgba(255, 50, 50, 1),
                0 0 30px rgba(255, 50, 50, 0.8),
                0 0 45px rgba(255, 50, 50, 0.6);
}

.example-card .code-block::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 70, 70, 1);
    box-shadow: 0 0 20px rgba(255, 50, 50, 1),
                0 0 40px rgba(255, 50, 50, 0.9),
                0 0 60px rgba(255, 50, 50, 0.7);
}

.example-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.stat-highlight {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.stat-highlight:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-highlight i {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.stat-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ========================================
   Getting Started Section
   ======================================== */

.getting-started {
    background: var(--bg-dark);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.step-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.step-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.code-block {
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 0.875rem;
    overflow-x: auto;

    /* Custom scrollbar for Firefox */
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 50, 50, 1) rgba(0, 0, 0, 0.8);
}

/* Custom scrollbar for Webkit browsers (Chrome, Safari, Edge) */
.code-block::-webkit-scrollbar {
    height: 8px;
}

.code-block::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.8);
    border-radius: var(--radius-full);
}

.code-block::-webkit-scrollbar-thumb {
    background: rgba(255, 50, 50, 1);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    box-shadow: 0 0 15px rgba(255, 50, 50, 1),
                0 0 30px rgba(255, 50, 50, 0.8),
                0 0 45px rgba(255, 50, 50, 0.6);
}

.code-block::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 70, 70, 1);
    box-shadow: 0 0 20px rgba(255, 50, 50, 1),
                0 0 40px rgba(255, 50, 50, 0.9),
                0 0 60px rgba(255, 50, 50, 0.7);
}

.code-block code {
    color: var(--text-secondary);
    white-space: pre;
    display: block;
}

.cta-box {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
}

.cta-box h3 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-box p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   Documentation Section
   ======================================== */

.documentation {
    background: var(--bg-darker);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.doc-card {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

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

.doc-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    font-size: 1.75rem;
    color: var(--accent);
}

.doc-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.doc-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.doc-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.doc-links a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.doc-links a:hover {
    color: var(--primary-light);
    transform: translateX(4px);
}

.doc-links i {
    font-size: 0.75rem;
}

/* ========================================
   CTA Section
   ======================================== */

.cta-section {
    background: var(--bg-dark);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

/* ========================================
   LLM Modernization Section
   ======================================== */

.llm-modernization {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-darker) 100%);
}

.modernization-hero {
    background: rgba(20, 20, 30, 0.4);
    border: 2px solid #4a4a5a;
    border-radius: 16px;
    padding: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
    text-align: center;
}

.modernization-headline {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.modernization-headline i {
    color: var(--primary);
    font-size: 2rem;
}

.modernization-description {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
}

.modernization-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

@media (max-width: 968px) {
    .modernization-grid {
        grid-template-columns: 1fr;
    }
}

.modernization-card {
    background: rgba(20, 20, 30, 0.4);
    border: 2px solid #4a4a5a;
    border-radius: 16px;
    padding: var(--spacing-2xl);
    transition: all var(--transition-normal);
}

.modernization-card:hover {
    transform: translateY(-4px);
    border-color: #6a6a7a;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.15);
}

.modernization-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.modernization-icon i {
    font-size: 2rem;
    color: var(--primary);
}

.modernization-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.modernization-text {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.modernization-benefits {
    list-style: none;
    padding: 0;
    margin: 0;
}

.modernization-benefits li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    line-height: 1.6;
}

.modernization-benefits i {
    color: var(--success);
    font-size: 1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.modernization-workflow {
    background: rgba(20, 20, 30, 0.4);
    border: 2px solid #4a4a5a;
    border-radius: 16px;
    padding: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.workflow-title {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    color: var(--text-primary);
}

.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.workflow-step {
    flex: 1;
    min-width: 200px;
    background: rgba(30, 30, 40, 0.5);
    border: 2px solid #4a4a5a;
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.workflow-step:hover {
    background: rgba(40, 40, 50, 0.6);
    border-color: #6a6a7a;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.1);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-md);
}

.step-content h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

.workflow-arrow {
    color: var(--primary);
    font-size: 2rem;
    flex-shrink: 0;
}

@media (max-width: 1024px) {
    .workflow-steps {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }
}

.modernization-cta {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    text-align: center;
}

.modernization-cta h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: white;
}

.modernization-cta p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.modernization-cta .btn {
    background: white;
    color: var(--primary);
    border: none;
}

.modernization-cta .btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--bg-darker);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: flex;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3xl);
    flex: 1;
}

@media (max-width: 1024px) {
    .footer-content {
        flex-direction: column;
    }

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

@media (max-width: 640px) {
    .footer-links {
        grid-template-columns: 1fr;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--primary);
    font-size: 2rem;
}

.footer-tagline {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: #b0b0b0;
}

.footer-column a {
    display: block;
    color: #808080;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
    font-size: 0.9rem;
}

.footer-column a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.visitor-counter {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.visitor-counter i {
    color: var(--primary-light);
}

.visitor-counter #visitorCount {
    font-weight: 700;
    color: var(--primary-light);
}

@media (max-width: 640px) {
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

.footer-social {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

/* ========================================
   Utility Classes
   ======================================== */

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

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

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

    .section-subtitle {
        font-size: 1rem;
    }
}

/* ========================================
   Contact Form Section
   ======================================== */

.contact {
    background: var(--bg-dark);
    padding: var(--spacing-4xl) 0;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-3xl);
}

.contact-info-section h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.contact-info-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateX(5px);
}

.contact-info-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 0.25rem;
}

.contact-info-item h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-info-item p,
.contact-info-item a {
    color: var(--text-secondary);
    text-decoration: none;
}

.contact-info-item a:hover {
    color: var(--primary);
}

.contact-form-section {
    background: var(--bg-card);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group label .required {
    color: var(--error);
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    background: var(--bg-dark);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-status {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: none;
    animation: slideIn 0.3s ease;
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.contact-form button[type="submit"] {
    margin-top: var(--spacing-md);
    max-width: 200px;
    width: 100%;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.contact-form button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .contact-form-section {
        padding: var(--spacing-xl);
    }
}

/* ========================================
   Visitor Counter Toast
   ======================================== */

.visitor-toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    z-index: 10000;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 16px 32px;
    border-radius: var(--radius-xl);
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.4);
    opacity: 0;
    pointer-events: none;
    animation: toastSlideIn 0.5s ease forwards, toastFadeOut 0.5s ease 3.5s forwards;
}

.visitor-toast .visitor-number {
    font-size: 1.4rem;
    font-weight: 800;
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 10px;
    border-radius: var(--radius-md);
    margin: 0 4px;
}

.visitor-toast .visitor-icon {
    margin-right: 8px;
}

@keyframes toastSlideIn {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes toastFadeOut {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
}