:root {
    --primary-color: #1a2a3a;
    --secondary-color: #2c3e50;
    --accent-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --bg-color: #f4f7f6;
}

.admin-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--primary-color);
    color: white;
    padding: 2rem 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-draft {
    background: #e0e0e0;
    color: #616161;
}

.badge-pending {
    background: #fff3e0;
    color: #ef6c00;
}

.badge-published {
    background: #e8f5e9;
    color: #2e7d32;
}

.badge-revision {
    background: #ffebee;
    color: #c62828;
}

table {
    width: 100%;
    margin-top: 1.5rem;
    border-spacing: 0;
}

th {
    text-align: left;
    color: #7f8c8d;
    font-size: 0.85rem;
    padding: 1rem;
    border-bottom: 2px solid #f0f3f4;
}

td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid #f0f3f4;
    vertical-align: middle;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.btn-primary:hover {
    background: #2980b9;
}

.main-content {
    background: var(--bg-color);
    padding: 2rem;
    min-height: 100vh;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    background: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}