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

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --background: #ffffff;
    --surface: #f8fafc;
    --surface-elevated: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Dark mode colors */
    --dark-background: #0f172a;
    --dark-surface: #1e293b;
    --dark-surface-elevated: #334155;
    --dark-text-primary: #f1f5f9;
    --dark-text-secondary: #cbd5e1;
    --dark-text-muted: #64748b;
    --dark-border: #334155;
    --dark-border-light: #475569;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.25rem;
}

.nav-icon {
    font-size: 1.5rem;
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--text-primary);
    color: white !important;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.github-link:hover {
    background: var(--primary);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--surface) 0%, rgba(99, 102, 241, 0.05) 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn-primary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hero Demo */
.hero-demo {
    margin-top: var(--space-3xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.demo-window {
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
}

.demo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.demo-dots {
    display: flex;
    gap: var(--space-xs);
}

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

.demo-dots span:nth-child(1) { background: #ef4444; }
.demo-dots span:nth-child(2) { background: #f59e0b; }
.demo-dots span:nth-child(3) { background: #10b981; }

.demo-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.demo-content {
    padding: var(--space-lg);
}

.demo-code {
    margin-bottom: var(--space-lg);
}

.demo-code pre {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary);
    overflow-x: auto;
}

.demo-output {
    padding: var(--space-md);
    background: var(--text-primary);
    border-radius: var(--radius-md);
    color: var(--secondary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.output-line {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.output-prompt {
    color: var(--accent);
    font-weight: 600;
}

/* Sections */
section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    background: var(--surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-xl);
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all 0.2s ease;
}

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

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

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

/* Quick Start Section */
.quickstart-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.step {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.125rem;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.code-block {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    overflow-x: auto;
}

.copy-btn {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--space-xs);
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.copy-btn:hover {
    opacity: 1;
}

/* Examples Section */
.examples {
    background: var(--surface);
}

.examples-tabs {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.example {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.example.active {
    display: grid;
}

.example-code {
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.example-code pre {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.5;
    overflow-x: auto;
}

.example-description h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.example-description p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* Documentation Section */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.doc-card {
    display: block;
    padding: var(--space-xl);
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

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

.doc-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.doc-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

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

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--dark-text-secondary);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--dark-text-primary);
}

.footer-icon {
    font-size: 1.5rem;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
}

.footer-links a {
    color: var(--dark-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--dark-border);
    color: var(--dark-text-muted);
}

/* Toast */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    background: var(--text-primary);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 6rem 0 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        gap: var(--space-lg);
    }
    
    .example {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}