:root {
    --primary-purple: #8e44ad;
    --primary-purple-dark: #71368a;
    --header-purple: #9b59b6;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
}

body {
    background-color: #f4f6f9;
    font-size: 0.9rem;
    /* Slightly smaller for admin feel */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Header */
.main-header {
    background-color: var(--primary-purple);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sub-header {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: #555;
    display: flex;
    overflow-x: auto;
}

.sub-header .nav-item {
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background 0.2s;
}

.sub-header .nav-item:hover,
.sub-header .nav-item.active {
    background-color: #f0edf4;
    color: var(--primary-purple);
    font-weight: 600;
}

/* Custom Card */
.custom-card {
    border: 1px solid #ced4da;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.custom-card-header {
    background-color: #fdfdfd;
    /* Very light */
    border-bottom: 1px solid #ced4da;
    color: var(--primary-purple);
    font-size: 0.95rem;
    padding: 8px 15px;
    text-transform: uppercase;
    border-left: 4px solid var(--primary-purple);
}

/* Form Controls */
.form-label {
    font-weight: 500;
    font-size: 0.8rem;
    color: #6c757d;
}

.form-control-sm,
.form-select-sm {
    border-radius: 2px;
    border-color: #ced4da;
    font-size: 0.85rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 0.2rem rgba(142, 68, 173, 0.25);
}

/* Highlighted Input */
.bg-warning-subtle {
    background-color: #fff3cd !important;
}

/* Buttons */
.custom-btn-purple {
    background-color: var(--primary-purple);
    border-color: var(--primary-purple);
    color: white;
}

.custom-btn-purple:hover {
    background-color: var(--primary-purple-dark);
    border-color: var(--primary-purple-dark);
}

/* Table */
.table thead th {
    background-color: #e9ecef;
    color: #495057;
    font-weight: 600;
    vertical-align: middle;
    border-bottom: 2px solid #dee2e6;
    font-size: 0.8rem;
    white-space: nowrap;
}

.table tbody td {
    vertical-align: middle;
    font-size: 0.85rem;
    padding: 0.3rem 0.5rem;
}

/* Scrollbar styling for table container */
.table-responsive::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.table-responsive::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.table-responsive::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Utilities */
.cursor-pointer {
    cursor: pointer;
}

/* Pagination Theme (Purple) */
.pagination {
    margin-bottom: 0;
}

.pagination .page-link {
    background-color: var(--primary-purple) !important;
    color: #fff !important;
    border: 1px solid var(--primary-purple) !important;
    margin: 0 2px;
    border-radius: 3px;
    font-weight: 600;
}

.pagination .page-link:hover {
    background-color: var(--primary-purple-dark) !important;
    border-color: var(--primary-purple-dark) !important;
    color: #fff !important;
}

.active>.page-link,
.page-link.active {
    z-index: 3;
    color: var(--bs-pagination-active-color);
    background-color: #8e44ad !important;
    border-color: #8e44ad !important;
    color: #fff !important;
}

.pagination .page-item.disabled .page-link {
    background-color: var(--primary-purple) !important;
    color: #e0e0e0 !important;
    opacity: 0.6;
    border-color: var(--primary-purple) !important;
}

/* Strict Validation Styles */
.form-control.is-invalid,
.form-select.is-invalid,
.border-danger-strict {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
    background-image: none !important;
    /* Remove Bootstrap's default X icon if unwanted */
}