/**
 * Admin Asset Variants Component
 * 
 * Modern variant management interface with grid layout,
 * thumbnail previews, and variant details.
 * Uses BEM naming convention and design system tokens.
 */

.admin-asset-variants {
    padding: var(--space-lg, 1.5rem);
    background: var(--bg, oklch(100% 0 0));
}

/* Header */
.admin-asset-variants__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md, 1rem);
    margin-bottom: var(--space-lg, 1.5rem);
    padding-bottom: var(--space-md, 1rem);
    border-bottom: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-asset-variants__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    margin: 0;
}

.admin-asset-variants__actions {
    display: flex;
    gap: var(--space-xs, 0.5rem);
}

/* Variants Grid */
.admin-asset-variants__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md, 1rem);
}

/* Variant Card */
.admin-variant-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: var(--radius-md, 8px);
    padding: var(--space-md, 1rem);
    transition: all var(--duration-default, 0.2s) var(--easing-default);
}

.admin-variant-card:hover {
    border-color: var(--border, oklch(70% 0.02 280));
    box-shadow: 0 2px 8px oklch(0% 0 0 / 0.1);
    transform: translateY(-2px);
}

.admin-variant-card__preview {
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg, oklch(100% 0 0));
    border-radius: var(--radius-sm, 4px);
    overflow: hidden;
    margin-bottom: var(--space-sm, 0.75rem);
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-variant-card__thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-default, 0.3s) var(--easing-default);
}

.admin-variant-card:hover .admin-variant-card__thumbnail {
    transform: scale(1.05);
}

.admin-variant-card__icon {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary, oklch(95% 0.01 280));
}

.admin-variant-card__icon-text {
    font-size: 2rem;
    font-weight: 600;
    color: var(--muted, oklch(50% 0.01 280));
}

.admin-variant-card__info {
    flex: 1;
    margin-bottom: var(--space-sm, 0.75rem);
}

.admin-variant-card__name {
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    margin-bottom: var(--space-xs, 0.5rem);
    font-size: 0.875rem;
    word-break: break-word;
}

.admin-variant-card__meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--muted, oklch(50% 0.01 280));
}

.admin-variant-card__dimensions,
.admin-variant-card__size,
.admin-variant-card__format {
    display: inline-block;
}

.admin-variant-card__actions {
    display: flex;
    gap: var(--space-xs, 0.5rem);
    margin-top: auto;
}

/* Empty State */
.admin-asset-variants__empty {
    text-align: center;
    padding: var(--space-xl, 3rem) var(--space-lg, 2rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 2px dashed var(--border-light, oklch(75% 0.02 280));
    border-radius: var(--radius-md, 8px);
}

.admin-asset-variants__empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md, 1rem);
    opacity: 0.5;
}

.admin-asset-variants__empty-text {
    font-size: 1rem;
    color: var(--text, oklch(20% 0.02 280));
    margin-bottom: var(--space-md, 1rem);
}

.admin-asset-variants__empty-hint {
    font-size: 0.875rem;
    color: var(--muted, oklch(50% 0.01 280));
    margin-top: var(--space-sm, 0.75rem);
}

/* Alerts */
.admin-alert {
    padding: var(--space-md, 1rem);
    border-radius: var(--radius-sm, 4px);
    margin-bottom: var(--space-lg, 1.5rem);
}

.admin-alert--error {
    background: oklch(60% 0.2 20 / 0.1);
    border-left: 4px solid var(--error, oklch(60% 0.2 20));
    color: var(--error, oklch(60% 0.2 20));
}

/* Buttons */
.admin-btn {
    padding: var(--space-xs, 0.5rem) var(--space-md, 1rem);
    border: none;
    border-radius: var(--radius-sm, 4px);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--duration-default, 0.2s) var(--easing-default);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

.admin-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.admin-btn--primary {
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
}

.admin-btn--primary:hover:not(:disabled) {
    background: var(--accent-primary-dark, oklch(50% 0.2 280));
}

.admin-btn--secondary {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    color: var(--text, oklch(20% 0.02 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-btn--secondary:hover {
    background: var(--bg-hover, oklch(90% 0.01 280));
    border-color: var(--border, oklch(70% 0.02 280));
}

.admin-btn--danger {
    background: var(--error, oklch(60% 0.2 20));
    color: var(--bg, oklch(100% 0 0));
}

.admin-btn--danger:hover {
    background: oklch(50% 0.2 20);
}

.admin-btn--sm {
    padding: var(--space-xs, 0.375rem) var(--space-sm, 0.75rem);
    font-size: 0.75rem;
}