/**
 * Component Styles - Part 2
 * Alerts, modals, tables, spinners, tabs, dropdowns
 */

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

/* Alert Container - Fixed position for notifications */
.alert-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    width: 380px;
    max-width: calc(100vw - 40px);
    pointer-events: none;
}

.alert-container .alert {
    pointer-events: auto;
}

.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: 0.8125rem;
    margin-bottom: var(--spacing-sm);
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.alert-success {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(34, 197, 94, 0.4);
    border-left: 3px solid var(--success-500);
    color: var(--neutral-200);
}

.alert-success i {
    color: var(--success-400);
}

.alert-danger {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(239, 68, 68, 0.4);
    border-left: 3px solid var(--danger-500);
    color: var(--neutral-200);
}

.alert-danger i {
    color: var(--danger-400);
}

.alert-warning {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(245, 158, 11, 0.4);
    border-left: 3px solid var(--warning-500);
    color: var(--neutral-200);
}

.alert-warning i {
    color: var(--warning-400);
}

.alert-info {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(59, 130, 246, 0.4);
    border-left: 3px solid var(--info-500);
    color: var(--neutral-200);
}

.alert-info i {
    color: var(--info-400);
}

.alert-dismissible {
    padding-right: 3rem;
    position: relative;
}

.alert .btn-close {
    position: absolute;
    top: 50%;
    right: var(--spacing-md);
    transform: translateY(-50%);
    padding: 0;
    background: transparent;
    border: none;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    font-size: 1.25rem;
}

.alert .btn-close:hover {
    opacity: 1;
}

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

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.show {
    display: flex;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
}

.modal-dialog {
    position: relative;
    z-index: var(--z-modal);
    width: 100%;
    max-width: 500px;
    margin: auto;
}

.modal-dialog-lg {
    max-width: 800px;
}

.modal-dialog-sm {
    max-width: 400px;
}

.modal-content {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin: 0;
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(148, 163, 184, 0.15);
}

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

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--neutral-300);
    background: rgba(15, 23, 42, 0.6);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td {
    padding: var(--spacing-md);
    color: var(--neutral-200);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

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

.table tbody tr:hover {
    background: rgba(148, 163, 184, 0.05);
}

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

/* ===========================================
   SPINNER / LOADING
   =========================================== */

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

.spinner-lg {
    width: 2rem;
    height: 2rem;
    border-width: 3px;
}

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

/* ===========================================
   EMPTY STATE
   =========================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--neutral-500);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--neutral-600);
}

.empty-state h4 {
    color: var(--neutral-300);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    margin-bottom: var(--spacing-lg);
}

/* ===========================================
   TABS
   =========================================== */

.nav-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    margin-bottom: var(--spacing-lg);
}

.nav-tabs .nav-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--neutral-400);
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.nav-tabs .nav-link:hover {
    color: var(--neutral-200);
}

.nav-tabs .nav-link.active {
    color: var(--primary-400);
    border-bottom-color: var(--primary-500);
}

/* ===========================================
   DROPDOWN
   =========================================== */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: var(--z-dropdown);
    min-width: 10rem;
    padding: var(--spacing-sm) 0;
    margin-top: var(--spacing-xs);
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: none;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--neutral-300);
    background: transparent;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.dropdown-item:hover {
    background: rgba(148, 163, 184, 0.1);
    color: white;
}

.dropdown-divider {
    height: 1px;
    margin: var(--spacing-sm) 0;
    background: rgba(148, 163, 184, 0.2);
}