* {
    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: #f5f5f5;
}

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

header {
    background: #4B2E83; /* UNA Purple */
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.intro {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.category {
    margin-bottom: 3rem;
}

.category h2 {
    color: #4B2E83;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #FDB515; /* UNA Gold */
}

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

.card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card h3 {
    color: #4B2E83;
    margin-bottom: 0.5rem;
}

.card p {
    color: #666;
    font-size: 0.95rem;
}

/* Content pages */
.content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.content h2 {
    color: #4B2E83;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #FDB515;
}

.content h3 {
    color: #4B2E83;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content ul, .content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.content code {
    background: #f4f4f4;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

.content strong {
    color: #4B2E83;
}

.back-link {
    display: inline-block;
    margin-bottom: 1.5rem;
    color: #4B2E83;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.callout {
    background: #FFF9E6;
    border-left: 4px solid #FDB515;
    padding: 1rem;
    margin: 1rem 0;
}

.callout strong {
    color: #333;
}

footer {
    background: #333;
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

footer p {
    opacity: 0.8;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.75rem;
    }
    
    .cards {
        grid-template-columns: 1fr;
    }
}