/* xPU-IO Unified Documentation Portal Theme */

:root {
    --xpu-primary: #2c3e50;
    --xpu-secondary: #3498db;
    --xpu-accent: #e74c3c;
    --xpu-bg: #ecf0f1;
    --xpu-text: #2c3e50;
    --xpu-light: #ffffff;
    --xpu-border: #bdc3c7;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    background: var(--xpu-bg);
    color: var(--xpu-text);
    line-height: 1.6;
}

.portal-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.portal-header {
    text-align: center;
    padding: 3rem 0;
}

.portal-logo {
    max-width: 200px;
    margin-bottom: 1rem;
}

.portal-title {
    font-size: 2.5rem;
    color: var(--xpu-primary);
    margin: 0 0 0.5rem 0;
    font-weight: 600;
}

.portal-subtitle {
    font-size: 1.2rem;
    color: #7f8c8d;
    margin: 0;
}

.project-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.project-card {
    background: var(--xpu-light);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.project-card h2 {
    color: var(--xpu-secondary);
    margin: 0 0 1rem 0;
    font-size: 1.8rem;
}

.project-card p {
    margin: 0;
    color: #7f8c8d;
    line-height: 1.6;
}

.project-card .version {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--xpu-bg);
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--xpu-text);
}

.portal-footer {
    text-align: center;
    padding: 2rem 0;
    color: #7f8c8d;
    border-top: 1px solid var(--xpu-border);
    margin-top: 3rem;
}