:root {
    --admin-bg: #f8fafc;
    --admin-card-bg: #ffffff;
    --admin-primary: #1e293b;
    --admin-accent: #3b82f6;
    --admin-text: #334155;
    --admin-text-light: #64748b;
    --admin-border: #e2e8f0;
    --admin-success: #10b981;
    --admin-danger: #ef4444;
}

.admin-wrapper {
    display: flex;
    min-height: calc(100vh - 150px);
    background-color: var(--admin-bg);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
}

/* Sidebar Navigation */
.admin-sidebar {
    width: 280px;
    background-color: #f8fafc !important; /* Light off-white sidebar */
    padding: 2rem 1.5rem !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 0.5rem !important;
    border-right: 1px solid #e2e8f0 !important;
    flex-shrink: 0;
}

.admin-sidebar .admin-nav-item {
    display: flex !important;
    align-items: center !important;
    gap: 1rem !important;
    padding: 1rem 1.25rem !important;
    border-radius: 0.75rem !important;
    color: #475569 !important; /* Dark Charcoal Gray */
    text-decoration: none !important;
    transition: all 0.2s ease !important;
    border: none !important;
    background: transparent !important;
    width: 100% !important;
    text-align: left !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    outline: none !important;
    box-shadow: none !important;
}

.admin-sidebar .admin-nav-item.active {
    color: #ffffff !important;
    background-color: #3b82f6 !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3) !important;
}

.admin-sidebar .admin-nav-item i {
    font-size: 1.25rem !important;
    width: 24px !important;
    color: inherit !important;
}

.admin-sidebar .admin-nav-item:hover:not(.active) {
    color: #1e293b !important;
    background-color: #e2e8f0 !important;
    padding-left: 1.5rem !important;
}

.admin-sidebar .admin-nav-item.active:hover {
    background-color: #2563eb !important;
    color: #ffffff !important;
}

/* Main Content Area */
.admin-content {
    flex: 1;
    padding: 2.5rem;
    overflow-y: auto;
    background-color: var(--admin-bg);
}

.admin-header {
    margin-bottom: 2.5rem;
}

.admin-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--admin-primary);
    margin-bottom: 0.5rem;
}

.admin-subtitle {
    color: var(--admin-text-light);
    font-size: 1rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background-color: var(--admin-card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue { background: #eff6ff; color: #3b82f6; }
.stat-icon.green { background: #ecfdf5; color: #10b981; }
.stat-icon.purple { background: #f5f3ff; color: #8b5cf6; }

.stat-info h4 {
    font-size: 0.875rem;
    color: var(--admin-text-light);
    margin: 0;
    font-weight: 500;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--admin-primary);
}

/* Tables & Lists */
.admin-card {
    background-color: var(--admin-card-bg);
    border-radius: 1rem;
    border: 1px solid var(--admin-border);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.admin-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--admin-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modern-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.5rem;
}

.modern-table th {
    padding: 0.75rem 1rem;
    color: var(--admin-text-light);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modern-table td {
    padding: 1rem;
    background-color: var(--admin-card-bg);
    border-top: 1px solid var(--admin-border);
    border-bottom: 1px solid var(--admin-border);
}

.modern-table tr td:first-child {
    border-left: 1px solid var(--admin-border);
    border-top-left-radius: 0.75rem;
    border-bottom-left-radius: 0.75rem;
}

.modern-table tr td:last-child {
    border-right: 1px solid var(--admin-border);
    border-top-right-radius: 0.75rem;
    border-bottom-right-radius: 0.75rem;
}

.badge {
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pending { background: #fef3c7; color: #d97706; }
.badge-approved { background: #dcfce7; color: #16a34a; }

.btn-action {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s;
    border: 1px solid var(--admin-border);
    background: white;
}

.btn-action:hover {
    background: #f1f5f9;
}

.btn-approve {
    background: var(--admin-success);
    color: white;
    border: none;
}

.btn-approve:hover {
    background: #059669;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

@media (max-width: 992px) {
    .admin-wrapper {
        flex-direction: column;
    }
    .admin-sidebar {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding: 1rem;
    }
    .admin-nav-item span {
        display: none;
    }
}