/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    line-height: 1.5;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: var(--text-xs);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

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

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

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

.btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
}

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

.btn-success:hover {
    background: #059669;
    border-color: #059669;
}

.btn-ghost {
    background: transparent;
    color: var(--color-gray-600);
    border-color: transparent;
}

.btn-ghost:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-800);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: var(--border-radius);
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.btn-icon.text-danger:hover {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-label .required {
    color: var(--color-danger);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    color: var(--color-gray-800);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input.is-invalid,
.form-select.is-invalid {
    border-color: var(--color-danger);
}

.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px var(--color-danger-light);
}

.form-error {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-danger);
    margin-top: var(--spacing-xs);
}

.form-hint {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

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

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

/* ============================================
   Tables
   ============================================ */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-gray-100);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

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

.data-table .action-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ============================================
   Badges & Status
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: var(--text-xs);
    font-weight: 500;
    border-radius: 9999px;
}

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

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

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

.badge-info {
    background: var(--color-info-light);
    color: #155e75;
}

.badge-gray {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

/* ============================================
   Quota Indicator
   ============================================ */
.quota-indicator {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    background: var(--color-white);
    border: 1px solid var(--border-color);
}

.quota-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.quota-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quota-bar {
    height: 8px;
    background: var(--color-gray-100);
    border-radius: 4px;
    overflow: hidden;
}

.quota-fill {
    height: 100%;
    border-radius: 4px;
    transition: width var(--transition-slow);
}

.quota-fill.success { background: var(--color-success); }
.quota-fill.warning { background: var(--color-warning); }
.quota-fill.danger { background: var(--color-danger); }

.quota-text {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
    text-align: right;
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    border: 1px solid;
}

.alert-info {
    background: var(--color-info-light);
    border-color: #a5f3fc;
    color: #155e75;
}

.alert-success {
    background: var(--color-success-light);
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-warning {
    background: var(--color-warning-light);
    border-color: #fde68a;
    color: #92400e;
}

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

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    justify-content: center;
    padding: var(--spacing-lg) 0;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.pagination-btn:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.pagination-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

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

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    min-width: 180px;
    background: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    padding: var(--spacing-xs) 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-gray-50);
    color: var(--color-gray-900);
}

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

/* ============================================
   Page Header
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.page-subtitle {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
}

.breadcrumbs a {
    color: var(--color-gray-500);
}

.breadcrumbs a:hover {
    color: var(--color-primary);
}

.breadcrumbs .separator {
    color: var(--color-gray-300);
}

.breadcrumbs .current {
    color: var(--color-gray-800);
    font-weight: 500;
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-xl);
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-gray-300);
}

.empty-state-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Tabs
   ============================================ */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.tab-item {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-500);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
}

.tab-item:hover {
    color: var(--color-gray-700);
}

.tab-item.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .app-main {
        margin-left: 0;
    }

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

@media (max-width: 768px) {
    .app-content {
        padding: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .header-search {
        display: none;
    }

    .data-table {
        display: block;
        overflow-x: auto;
    }
}

/* ============================================
   Icons
   ============================================ */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon svg {
    width: 100%;
    height: 100%;
}

.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-gray { color: var(--color-gray-500); }

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.icon-loader svg {
    animation: spin 1s linear infinite;
}

/* ============================================
   Auth Pages
   ============================================ */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-gray-900) 0%, #1e3a5f 50%, var(--color-primary-dark) 100%);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.auth-layout::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 70%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(37, 99, 235, 0.05) 0%, transparent 50%);
    animation: authBgPulse 15s ease-in-out infinite;
}

@keyframes authBgPulse {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-2%, -1%); }
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo svg {
    margin: 0 auto var(--spacing-sm);
}

.auth-logo h1 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.auth-logo p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-xs);
}

.auth-tabs {
    display: flex;
    background: var(--color-gray-100);
    border-radius: var(--border-radius-md);
    padding: 3px;
    margin-bottom: var(--spacing-xl);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-gray-500);
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.auth-tab:hover {
    color: var(--color-gray-700);
}

.auth-tab.active {
    background: var(--color-white);
    color: var(--color-gray-900);
    box-shadow: var(--shadow-sm);
}

.auth-submit {
    width: 100%;
    justify-content: center;
    padding: 0.75rem;
    font-size: var(--text-sm);
    margin-top: var(--spacing-sm);
}

.auth-footer-text {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-lg);
}

.auth-footer-text a {
    font-weight: 500;
}

.auth-reset-info {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-info-light);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-xs);
    color: #155e75;
    line-height: 1.5;
}

.auth-reset-info svg {
    flex-shrink: 0;
    margin-top: 1px;
}

.input-with-icon {
    position: relative;
}

.input-with-icon svg {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-400);
    pointer-events: none;
}

.input-with-icon .form-input {
    padding-left: 2.5rem;
}

/* ============================================
   Notification Panel
   ============================================ */
.notification-panel {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    width: 360px;
    background: var(--color-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.notification-panel-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.notification-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-50);
    transition: background var(--transition-fast);
}

.notification-item:hover {
    background: var(--color-gray-50);
}

.notification-item .icon {
    margin-top: 2px;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-800);
}

.notification-text {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-top: 2px;
}

.notification-time {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    white-space: nowrap;
}

/* ============================================
   Activity List
   ============================================ */
.activity-list {
    display: flex;
    flex-direction: column;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.activity-dot.primary { background: var(--color-primary); }
.activity-dot.success { background: var(--color-success); }
.activity-dot.warning { background: var(--color-warning); }

.activity-text {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

.activity-time {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    margin-top: 2px;
}