body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 10px;
    font-size: 2.5em;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 40px;
    font-size: 1.2em;
}

.demo-section {
    background: #d8d9da;
    border-radius: 8px;
    padding: 0px;
    margin: 20px 0;
    text-align: center;
}

.canvas-container {
    background: #000;
    border-radius: 8px;
    display: inline-block;
    padding: 0;
    margin-bottom: 20px ;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

canvas {
    display: block;
    border-radius: 4px;
}

.controls {
    margin: 0;
    padding: 5px;
    background: #9dc8e6;
    border-radius: 6px;
    font-size: 14px;
}

.controls h4 {
    margin: 0 0 10px 0;
    color: #1976d2;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.feature-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.feature-card h3 {
    margin: 0 0 10px 0;
    color: #2c3e50;
}

.code-example {
    background: rgb(21, 21, 21);
    color: #e2e8f0;
    padding: 10px;
    border-radius: 8px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    overflow-x: auto;
    margin: 20px 0;
    font-size: 14px;
}

.code-example pre {
    margin: 0;
    padding: 10px;
}

.links {
    text-align: center;
    margin: 30px 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    margin: 0 10px;
    background: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}