/**
 * UI State Components Styles
 * Styles for loading spinners, error messages, and empty states.
 */

/* ============================================
   Loading Spinner Styles
   ============================================ */

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(var(--bs-body-bg-rgb, 255, 255, 255), 0.85);
    z-index: 100;
    backdrop-filter: blur(2px);
}

.spinner-lg {
    width: 3rem;
    height: 3rem;
    border-width: 0.35em;
}

.loading-spinner-instance {
    animation: fadeIn 0.2s ease-in;
}

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

/* Skeleton placeholder improvements */
.placeholder-glow .placeholder {
    display: block;
    height: 0.8rem;
    margin-bottom: 0.5rem;
}

/* ============================================
   Error Message Styles
   ============================================ */

.error-message-instance {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-retry-btn {
    font-size: 0.75rem;
}

/* ============================================
   Empty State Styles
   ============================================ */

.empty-state {
    padding: 2rem;
    max-width: 400px;
    margin: 0 auto;
}

.empty-state-icon {
    opacity: 0.5;
}

.empty-state-icon i {
    font-size: 4rem;
}

.empty-state h5 {
    color: var(--text-secondary, #6c757d);
}

.empty-state p {
    color: var(--text-muted, #adb5bd);
}

.empty-state-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Large empty state for primary content areas */
.empty-state-container {
    min-height: 400px;
}

.empty-state-container .empty-state-icon i {
    font-size: 6rem;
}

/* ============================================
   Dark Theme Overrides
   ============================================ */

[data-bs-theme="dark"] .loading-overlay,
.dark-theme .loading-overlay {
    background-color: rgba(33, 37, 41, 0.85);
}

[data-bs-theme="dark"] .empty-state h5,
.dark-theme .empty-state h5 {
    color: var(--text-secondary-dark, #adb5bd);
}

[data-bs-theme="dark"] .empty-state p,
.dark-theme .empty-state p {
    color: var(--text-muted-dark, #6c757d);
}

/* ============================================
   Utility Classes
   ============================================ */

.state-transition {
    transition: opacity 0.2s ease-in-out;
}

.state-hidden {
    opacity: 0;
    pointer-events: none;
}

.state-visible {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   Toast Notification Styles
   ============================================ */

.clarity-toast {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background: var(--bg-surface, #ffffff);
    color: var(--text-primary, #212529);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color, #dee2e6);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    max-width: 90vw;
    min-width: 280px;
}

.clarity-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.clarity-toast-message {
    flex: 1;
    font-size: 0.875rem;
    font-weight: 500;
}

.clarity-toast-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--text-muted, #6c757d);
    cursor: pointer;
    padding: 0;
    opacity: 0.6;
    transition: opacity 0.15s;
}

.clarity-toast-close:hover {
    opacity: 1;
}

/* Toast type variants */
.clarity-toast-success {
    border-left: 4px solid #28a745;
}

.clarity-toast-error {
    border-left: 4px solid #dc3545;
}

.clarity-toast-warning {
    border-left: 4px solid #ffc107;
}

.clarity-toast-info {
    border-left: 4px solid #17a2b8;
}

/* Dark mode support */
[data-theme="dark"] .clarity-toast {
    background: var(--bg-surface, #1e1e1e);
    color: var(--text-primary, #f8f9fa);
    border-color: var(--border-color, #404040);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}