/**
 * UI Enhancements Styles
 * ITCSS: Components Layer
 */

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    border-radius: var(--radius-md);
}

[data-theme="dark"] .loading-overlay {
    background: rgba(0, 0, 0, 0.8);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-message {
    margin-top: var(--space-md);
    color: var(--text);
    font-size: 0.875rem;
}

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

/* Button Loading State */
button.loading,
input[type="submit"].loading {
    position: relative;
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

.button-spinner {
    display: inline-block;
    margin-right: var(--space-xs);
    animation: spin 1s linear infinite;
}

/* Optimistic Updates */
.optimistic-delete {
    opacity: 0.5;
    text-decoration: line-through;
    transition: opacity var(--duration-default) var(--easing-default);
}

.optimistic-update {
    background: oklch(from var(--info) l c h / 0.1);
    transition: background var(--duration-default) var(--easing-default);
}

/* Error Notifications */
.error-notification {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    background: var(--error);
    color: var(--text-inverse);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    max-width: 400px;
    animation: slideInRight 0.3s ease-out;
}

.error-notification strong {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
}

.error-notification p {
    margin: var(--space-xs) 0;
    font-size: 0.875rem;
}

.error-notification button {
    margin-top: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    color: var(--text-inverse);
    cursor: pointer;
    transition: background var(--duration-default) var(--easing-default);
}

.error-notification button:hover {
    background: rgba(255, 255, 255, 0.3);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Table Row Loading States */
tr[data-loading="true"] {
    opacity: 0.6;
    pointer-events: none;
}

tr[data-loading="true"] td {
    position: relative;
}

tr[data-loading="true"] td::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Form Loading States */
form[data-loading="true"] {
    pointer-events: none;
    opacity: 0.7;
}

form[data-loading="true"] input,
form[data-loading="true"] textarea,
form[data-loading="true"] select {
    cursor: not-allowed;
}

/* Retry Button */
.retry-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--warning);
    color: var(--text-inverse);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: background var(--duration-default) var(--easing-default);
}

.retry-button:hover {
    background: var(--warning-dark);
}

/* Success Flash */
.success-flash {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    background: var(--success);
    color: var(--text-inverse);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    animation: slideInRight 0.3s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .error-notification,
    .success-flash {
        top: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
        max-width: none;
    }
}