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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 2rem 1rem;
    color: #333;
}

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

header {
    text-align: center;
    color: white;
    margin-bottom: 3rem;
    animation: fadeIn 0.6s ease;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    margin-bottom: 1.5rem;
}

.github-link {
    display: inline-block;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border: 2px solid white;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
}

.github-link:hover {
    background: white;
    color: #667eea;
    transform: translateY(-2px);
}

main {
    animation: fadeIn 0.8s ease;
}

.section {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.section h2 {
    color: #667eea;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid #667eea;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    background: #f9fafb;
    border-radius: 8px;
    padding: 1.5rem;
    border: 2px solid #e5e7eb;
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.card h3 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.card p {
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card-meta {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: #e5e7eb;
    color: #374151;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge.lambda {
    background: #fbbf24;
    color: #78350f;
}

.btn {
    display: inline-block;
    background: #667eea;
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.2s;
    text-align: center;
}

.btn:hover {
    background: #5568d3;
    transform: translateX(4px);
}

.btn-disabled {
    background: #d1d5db;
    color: #6b7280;
    cursor: not-allowed;
    pointer-events: none;
}

.info-section {
    background: linear-gradient(135deg, #f9fafb 0%, #e5e7eb 100%);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.info-card {
    background: white;
    padding: 1rem;
    border-radius: 6px;
    border-left: 4px solid #667eea;
}

.info-card h4 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.info-card p {
    color: #6b7280;
    font-size: 0.95rem;
}

.info-card a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.info-card a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    color: white;
    padding: 2rem 0;
    font-size: 0.95rem;
    opacity: 0.9;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .section h2 {
        font-size: 1.5rem;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}