/**
 * Components Library CSS
 * Premium SaaS design system with animations and glassmorphism
 */

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Button Base Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

/* Button Variants */
.btn-primary {
    background: linear-gradient(135deg, var(--color-gold), #e5c158);
    color: var(--color-black);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--color-dark-light);
    color: var(--color-text-primary);
    border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-gold);
    background-color: rgba(212, 175, 55, 0.05);
    color: var(--color-gold);
}

.btn-success {
    background-color: var(--color-success);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background-color: var(--color-danger);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background-color: var(--color-warning);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-info {
    background-color: var(--color-info);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-gold);
    color: var(--color-gold);
}

.btn-outline:hover {
    background-color: rgba(212, 175, 55, 0.1);
}

.btn-ghost {
    background: transparent;
    color: var(--color-gold);
    border: none;
}

.btn-ghost:hover {
    color: #e5c158;
}

/* Button Sizes */
.btn-xs {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-xl {
    padding: var(--spacing-xl) var(--spacing-2xl);
    font-size: 1.25rem;
}

/* Button States */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loading {
    pointer-events: none;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: var(--spacing-md);
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.btn-icon-sm {
    padding: var(--spacing-sm);
    width: 32px;
    height: 32px;
}

.btn-icon-lg {
    padding: var(--spacing-lg);
    width: 48px;
    height: 48px;
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.form-label-required::after {
    content: ' *';
    color: var(--color-danger);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--color-dark-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.form-control::placeholder {
    color: var(--color-muted);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-gold);
    background-color: var(--color-dark);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-control:disabled {
    background-color: var(--color-dark);
    color: var(--color-muted);
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: var(--color-danger);
    background-image: linear-gradient(to right, transparent 90%, rgba(239, 68, 68, 0.1));
    background-repeat: no-repeat;
    background-position: right;
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

.form-control.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23D4AF37' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 36px;
}

/* Form Helper Text */
.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

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

.form-text.text-success {
    color: var(--color-success);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-check-input {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-gold);
}

.form-check-label {
    cursor: pointer;
    margin-bottom: 0;
    user-select: none;
}

/* Input Group */
.input-group {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.input-group .form-control {
    flex: 1;
    margin-bottom: 0;
    border-right: none;
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-dark-light);
    border: 1px solid var(--color-border);
    border-left: none;
    color: var(--color-muted);
    font-size: 1rem;
}

.input-group .form-control:focus + .input-group-text,
.input-group .form-control:focus ~ .input-group-text {
    border-color: var(--color-gold);
}

/* ============================================================================
   CARDS
   ============================================================================ */

.card {
    background-color: var(--color-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    border-color: var(--color-gold);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-dark-light), var(--color-dark));
    border-bottom: 1px solid var(--color-border);
}

.card-header h5 {
    margin: 0;
    color: var(--color-text-primary);
}

.card-body {
    padding: var(--spacing-lg);
    flex-grow: 1;
}

.card-footer {
    padding: var(--spacing-lg);
    background-color: rgba(212, 175, 55, 0.03);
    border-top: 1px solid var(--color-border);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
}

.card-overlay {
    position: relative;
}

.card-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.8));
    border-radius: var(--radius-lg);
}

/* Card Variants */
.card-primary {
    border-left: 4px solid var(--color-gold);
}

.card-success {
    border-left: 4px solid var(--color-success);
}

.card-danger {
    border-left: 4px solid var(--color-danger);
}

.card-warning {
    border-left: 4px solid var(--color-warning);
}

.card-info {
    border-left: 4px solid var(--color-info);
}

.card-glass {
    background: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.card-flat {
    background: var(--color-dark-light);
    border: none;
    box-shadow: none;
}

.card-flat:hover {
    transform: none;
}

/* ============================================================================
   TABLES
   ============================================================================ */

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
}

.table thead {
    background: linear-gradient(135deg, var(--color-dark-light), var(--color-dark));
}

.table th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 700;
    color: var(--color-gold);
    border-bottom: 2px solid var(--color-border);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
}

.table tbody tr:hover {
    background-color: rgba(212, 175, 55, 0.05);
}

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

.table-striped tbody tr:nth-child(odd) {
    background-color: rgba(212, 175, 55, 0.02);
}

.table-striped tbody tr:nth-child(odd):hover {
    background-color: rgba(212, 175, 55, 0.08);
}

.table-hover tbody tr:hover {
    background-color: rgba(212, 175, 55, 0.05);
    cursor: pointer;
}

.table-sm th,
.table-sm td {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.table-responsive {
    overflow-x: auto;
}

.table-responsive table {
    min-width: 500px;
}

/* ============================================================================
   MODALS
   ============================================================================ */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9000;
    animation: fadeIn var(--transition-base);
}

.modal-backdrop.show {
    display: flex;
}

.modal {
    background: linear-gradient(135deg, var(--color-dark), var(--color-dark-light));
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp var(--transition-base);
}

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

.modal-header h5 {
    margin: 0;
    color: var(--color-gold);
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
    transition: color var(--transition-base);
}

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

.modal-body {
    padding: var(--spacing-xl);
    color: var(--color-text-primary);
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

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

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============================================================================
   TOASTS
   ============================================================================ */

.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    max-width: 400px;
}

.toast {
    background: var(--color-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    box-shadow: var(--shadow-lg);
    animation: slideInRight var(--transition-base);
}

.toast-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.toast-success {
    border-left: 4px solid var(--color-success);
}

.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-danger {
    border-left: 4px solid var(--color-danger);
}

.toast-danger .toast-icon {
    color: var(--color-danger);
}

.toast-warning {
    border-left: 4px solid var(--color-warning);
}

.toast-warning .toast-icon {
    color: var(--color-warning);
}

.toast-info {
    border-left: 4px solid var(--color-info);
}

.toast-info .toast-icon {
    color: var(--color-info);
}

.toast-title {
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.toast-message {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-muted);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0;
    flex-shrink: 0;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast.hide {
    animation: slideOutRight var(--transition-base);
}

/* ============================================================================
   LOADERS & SKELETONS
   ============================================================================ */

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(212, 175, 55, 0.2);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

.spinner-lg {
    width: 64px;
    height: 64px;
    border-width: 5px;
}

.spinner-success {
    border-color: rgba(16, 185, 129, 0.2);
    border-top-color: var(--color-success);
}

.spinner-danger {
    border-color: rgba(239, 68, 68, 0.2);
    border-top-color: var(--color-danger);
}

.spinner-warning {
    border-color: rgba(245, 158, 11, 0.2);
    border-top-color: var(--color-warning);
}

.spinner-info {
    border-color: rgba(59, 130, 246, 0.2);
    border-top-color: var(--color-info);
}

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

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--color-dark-light) 25%, var(--color-dark) 50%, var(--color-dark-light) 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 16px;
    margin-bottom: var(--spacing-md);
}

.skeleton-title {
    height: 24px;
    margin-bottom: var(--spacing-lg);
}

.skeleton-image {
    height: 200px;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.skeleton-card {
    padding: var(--spacing-lg);
    background: var(--color-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

/* ============================================================================
   PAGINATION
   ============================================================================ */

.pagination {
    display: flex;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.pagination-item {
    display: inline-flex;
}

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.pagination-link:hover {
    border-color: var(--color-gold);
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--color-gold);
}

.pagination-link.active {
    background: linear-gradient(135deg, var(--color-gold), #e5c158);
    color: var(--color-black);
    border-color: var(--color-gold);
    font-weight: 700;
}

.pagination-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-muted);
}

/* ============================================================================
   BREADCRUMBS
   ============================================================================ */

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    list-style: none;
    margin: 0;
    padding: var(--spacing-lg);
    background-color: transparent;
    align-items: center;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item::after {
    content: '/';
    margin-left: var(--spacing-md);
    color: var(--color-muted);
}

.breadcrumb-item:last-child::after {
    content: '';
    margin: 0;
}

.breadcrumb-link {
    color: var(--color-gold);
    text-decoration: none;
    transition: color var(--transition-base);
}

.breadcrumb-link:hover {
    color: #e5c158;
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--color-text-secondary);
}

/* ============================================================================
   BADGES & TAGS
   ============================================================================ */

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: linear-gradient(135deg, var(--color-gold), #e5c158);
    color: var(--color-black);
}

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

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

.badge-warning {
    background-color: var(--color-warning);
    color: white;
}

.badge-info {
    background-color: var(--color-info);
    color: white;
}

.badge-secondary {
    background-color: var(--color-dark-light);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.badge-outline-primary {
    background: transparent;
    border: 1.5px solid var(--color-gold);
    color: var(--color-gold);
}

/* ============================================================================
   ALERTS
   ============================================================================ */

.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid;
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    animation: slideDown var(--transition-base);
}

.alert-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.alert-content {
    flex-grow: 1;
}

.alert-title {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
    color: #10b981;
}

.alert-success .alert-icon {
    color: var(--color-success);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--color-danger);
    color: #ef4444;
}

.alert-danger .alert-icon {
    color: var(--color-danger);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: var(--color-warning);
    color: #f59e0b;
}

.alert-warning .alert-icon {
    color: var(--color-warning);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--color-info);
    color: #3b82f6;
}

.alert-info .alert-icon {
    color: var(--color-info);
}

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

/* ============================================================================
   SIDEBAR
   ============================================================================ */

.sidebar {
    background: linear-gradient(180deg, var(--color-dark), var(--color-dark-light));
    border-right: 1px solid var(--color-border);
    width: 250px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
    z-index: 900;
}

.sidebar-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-menu {
    list-style: none;
    margin: 0;
    padding: var(--spacing-lg) 0;
}

.sidebar-menu-item {
    margin: 0;
}

.sidebar-menu-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
    position: relative;
}

.sidebar-menu-link:hover {
    background-color: rgba(212, 175, 55, 0.05);
    border-left-color: var(--color-gold);
    color: var(--color-gold);
}

.sidebar-menu-link.active {
    background-color: rgba(212, 175, 55, 0.1);
    border-left-color: var(--color-gold);
    color: var(--color-gold);
    font-weight: 600;
}

.sidebar-menu-item.submenu .sidebar-menu-link::after {
    content: '';
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%) rotate(0);
    width: 16px;
    height: 16px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    transition: transform var(--transition-base);
}

.sidebar-menu-item.submenu.open .sidebar-menu-link::after {
    transform: translateY(-50%) rotate(180deg);
}

.sidebar-submenu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: none;
    background-color: rgba(0, 0, 0, 0.3);
}

.sidebar-submenu.show {
    display: block;
}

.sidebar-submenu-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-sm) var(--spacing-xl) calc(var(--spacing-lg) * 2);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    border-left: 3px solid transparent;
}

.sidebar-submenu-link:hover,
.sidebar-submenu-link.active {
    background-color: rgba(212, 175, 55, 0.1);
    border-left-color: var(--color-gold);
    color: var(--color-gold);
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: linear-gradient(135deg, var(--color-dark-light), var(--color-dark));
}

/* Main content offset for sidebar */
.layout-sidebar {
    margin-left: 250px;
}

/* Mobile sidebar toggle */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

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

    .layout-sidebar {
        margin-left: 0;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 890;
    }

    .sidebar-overlay.show {
        display: block;
    }
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

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

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

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideLeft {
    from {
        transform: translateX(30px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideRight {
    from {
        transform: translateX(-30px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Utility animation classes */
.animate-fadeIn {
    animation: fadeIn var(--transition-base);
}

.animate-fadeOut {
    animation: fadeOut var(--transition-base);
}

.animate-slideUp {
    animation: slideUp var(--transition-base);
}

.animate-slideDown {
    animation: slideDown var(--transition-base);
}

.animate-slideLeft {
    animation: slideLeft var(--transition-base);
}

.animate-slideRight {
    animation: slideRight var(--transition-base);
}

.animate-bounce {
    animation: bounce var(--transition-slow);
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================================================
   RESPONSIVE UTILITIES
   ============================================================================ */

.d-none {
    display: none;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.align-items-center {
    align-items: center;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.justify-content-end {
    justify-content: flex-end;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

.gap-4 {
    gap: var(--spacing-xl);
}

/* Responsive breakpoints */
@media (max-width: 768px) {
    .d-md-none {
        display: none !important;
    }

    .d-md-flex {
        display: flex !important;
    }

    .justify-md-center {
        justify-content: center;
    }

    .text-center-md {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .d-sm-none {
        display: none !important;
    }

    .d-sm-flex {
        display: flex !important;
    }

    .justify-sm-center {
        justify-content: center;
    }

    .text-center-sm {
        text-align: center;
    }

    .btn-block {
        width: 100%;
    }
}