/* ========================================
   Reusable UI Components
   ======================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-secondary) 100%);
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
}

.btn-success {
    background: var(--status-success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-danger {
    background: var(--status-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-icon {
    width: 16px;
    height: 16px;
}

/* Cards */
.card {
    background: var(--bg-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-gray-50);
}

.card-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-gray-50);
}

/* Stats Card */
.stats-card {
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-secondary) 100%);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stats-card-label {
    font-size: 13px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stats-card-value {
    font-size: 32px;
    font-weight: var(--font-weight-extrabold);
    color: var(--text-dark);
    line-height: 1;
}

.stats-card-change {
    margin-top: 8px;
    font-size: 13px;
    font-weight: var(--font-weight-semibold);
}

.stats-card-change.positive {
    color: var(--status-success);
}

.stats-card-change.negative {
    color: var(--status-danger);
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
}

.form-label.required::after {
    content: '*';
    color: var(--status-danger);
    margin-left: 4px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.1);
}

.form-control:disabled {
    background: var(--bg-gray-100);
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 8px center;
    background-repeat: no-repeat;
    background-size: 20px;
    padding-right: 36px;
    appearance: none;
}

.form-help {
    margin-top: 4px;
    font-size: 13px;
    color: var(--text-light);
}

.form-error {
    margin-top: 4px;
    font-size: 13px;
    color: var(--status-danger);
    font-weight: var(--font-weight-semibold);
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-white);
}

.table th {
    padding: 14px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-secondary) 100%);
    border-bottom: 2px solid var(--admin-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: 14px 16px;
    font-size: 14px;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--bg-gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: var(--font-weight-semibold);
    border-radius: 12px;
    white-space: nowrap;
}

.badge-primary {
    background: var(--admin-primary-light);
    color: var(--admin-primary-dark);
}

.badge-success {
    background: var(--status-success-light);
    color: #065f46;
}

.badge-warning {
    background: var(--status-warning-light);
    color: #92400e;
}

.badge-danger {
    background: var(--status-danger-light);
    color: #991b1b;
}

.badge-info {
    background: var(--status-info-light);
    color: #1e40af;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    animation: fadeIn var(--transition-fast);
}

.modal {
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: slideUp var(--transition-normal);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    margin: 0;
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--text-dark);
}

.modal-close {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-medium);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-dark);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-gray-50);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alerts */
.alert {
    padding: 14px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    border-left: 4px solid;
}

.alert-success {
    background: var(--status-success-light);
    border-color: var(--status-success);
    color: #065f46;
}

.alert-warning {
    background: var(--status-warning-light);
    border-color: var(--status-warning);
    color: #92400e;
}

.alert-danger {
    background: var(--status-danger-light);
    border-color: var(--status-danger);
    color: #991b1b;
}

.alert-info {
    background: var(--status-info-light);
    border-color: var(--status-info);
    color: #1e40af;
}

/* Grid System */
.grid {
    display: grid;
    gap: 24px;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1200px) {
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(1, 1fr);
    }
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 200px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    overflow: hidden;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--text-dark);
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-gray-50);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 0;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    margin-top: 24px;
}

.pagination-btn {
    padding: 8px 12px;
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--admin-primary);
    color: var(--admin-primary);
}

.pagination-btn.active {
    background: linear-gradient(135deg, var(--admin-primary) 0%, var(--admin-secondary) 100%);
    border-color: var(--admin-primary-dark);
    color: var(--text-dark);
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}