:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --primary-color: #343a40;
    --secondary-color: #6c757d;
    --accent-color: #0056b3;
    --border-color: #dee2e6;
    --card-bg: #ffffff;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-bottom: 2rem;
}

header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-bottom: 2rem;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover, nav a.active {
    color: var(--primary-color);
}

main {
    min-height: 60vh;
}

h1, h2, h3, h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

h1 { font-size: 2.25rem; border-bottom: 2px solid var(--border-color); padding-bottom: 0.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.75rem; margin-top: 2rem; }
h3 { font-size: 1.25rem; margin-top: 1.5rem; }

p { margin-bottom: 1rem; }

.doc-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 4px;
}

.doc-meta {
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 4px;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border-color: var(--accent-color);
}

.card h3 { margin-top: 0; color: var(--accent-color); }

.footer {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--secondary-color);
    text-align: center;
}

.footer-links {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--secondary-color);
    text-decoration: none;
}

.footer-links a:hover {
    text-decoration: underline;
}

.btn {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: #000;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--bg-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

th, td {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: #f1f3f5;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-neutral { background: #e9ecef; color: #495057; }
.badge-warning { background: #fff3cd; color: #856404; }
.badge-danger { background: #f8d7da; color: #721c24; }

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    nav ul {
        gap: 0.75rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    h1 { font-size: 1.75rem; }
}