:root {
    --color-primary: #4a90d9;
    --color-primary-dark: #357abd;
    --color-secondary: #6c757d;
    --color-success: #4cd964;
    --color-bg: #0d1117;
    --color-bg-secondary: #161b22;
    --color-text: #e6edf3;
    --color-text-muted: #8b949e;
    --color-border: #30363d;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    border-bottom: 1px solid var(--color-border);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 12px;
    font-weight: 500;
}

.hero .description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
}

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

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

.btn-secondary {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    font-family: monospace;
}

.btn-secondary:hover {
    border-color: var(--color-primary);
}

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

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

/* Features Section */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 48px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

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

.feature-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 12px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

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

/* Demos Section */
.demos {
    padding: 80px 0;
    background: var(--color-bg-secondary);
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
}

.demos h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 16px;
}

.demos-description {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 48px;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.demo-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.demo-preview {
    background: #1a1f26;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
    position: relative;
}

.demo-preview canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.demo-card h3 {
    padding: 16px 16px 8px;
    font-size: 1.1rem;
}

.demo-card p {
    padding: 0 16px 16px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.demo-card-link {
    display: block;
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}

.demo-card-link:hover {
    background: rgba(74, 144, 217, 0.08);
}

/* Installation Section */
.installation {
    padding: 80px 0;
}

.installation h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 32px;
}

.installation h3 {
    margin: 24px 0 12px;
    font-size: 1.1rem;
}

.code-block {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--color-text);
}

.code-block code.hljs {
    background: transparent;
    padding: 0;
}

/* Compatibility Section */
.compatibility {
    padding: 80px 0;
    background: var(--color-bg-secondary);
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
}

.compatibility h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 32px;
}

.compat-table {
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
    border-collapse: collapse;
}

.compat-table th,
.compat-table td {
    padding: 12px 24px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.compat-table th {
    background: var(--color-bg);
    font-weight: 600;
}

.compat-table td:last-child {
    color: var(--color-success);
}

/* Footer */
footer {
    padding: 40px 20px;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

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

footer a:hover {
    text-decoration: underline;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .tagline {
        font-size: 1.25rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .feature-grid,
    .demo-grid {
        grid-template-columns: 1fr;
    }
}