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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-bottom: 2rem;
}

header h1 {
    margin-bottom: 0.5rem;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

#projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.project-card h2 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.project-card p {
    margin-bottom: 1rem;
    color: #666;
}

.project-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #667eea;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.project-link:hover {
    background: #5568d3;
}

.project-link.demo {
    background: #48bb78;
}

.project-link.demo:hover {
    background: #38a169;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #666;
}