/**
 * Admin Block Editor Component
 * 
 * Modern block editor with split-screen mode, improved block cards,
 * enhanced drag & drop feedback, and block type icons.
 * Uses BEM naming convention and design system tokens.
 */

.admin-block-editor {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg, 1.5rem);
    padding: var(--space-lg, 1.5rem);
    background: var(--bg, oklch(100% 0 0));
    min-height: 100vh;
}

/* Split-Screen Layout */
.admin-block-editor--split-screen {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg, 1.5rem);
    align-items: start;
}

.admin-block-editor__main {
    grid-column: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg, 1.5rem);
}

.admin-block-editor__preview-panel {
    grid-column: 2;
    position: sticky;
    top: var(--space-lg, 1.5rem);
    max-height: calc(100vh - var(--space-lg, 1.5rem) * 2);
    overflow-y: auto;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    padding: var(--space-md, 1rem);
}

/* Toolbar */
.admin-block-editor__toolbar {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    padding: var(--space-md, 1rem);
    margin-bottom: var(--space-md, 1rem);
}

.admin-block-editor__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    margin: 0 0 var(--space-md, 1rem) 0;
    padding-bottom: var(--space-sm, 0.75rem);
    border-bottom: 2px solid var(--border-light, oklch(75% 0.02 280));
}

/* Block Types Grid */
.admin-block-editor__block-types {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--space-sm, 0.75rem);
}

.admin-block-type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs, 0.5rem);
    padding: var(--space-md, 1rem);
    border: 2px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    background: var(--bg, oklch(100% 0 0));
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 100px;
    min-height: 100px;
}

.admin-block-type-btn:hover {
    border-color: var(--accent-primary, oklch(60% 0.2 280));
    background: var(--bg-secondary, oklch(95% 0.01 280));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px oklch(0% 0 0 / 0.1);
}

.admin-block-type-btn:active {
    transform: translateY(0);
}

.admin-block-type-btn__icon {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-primary, oklch(60% 0.2 280));
    line-height: 1;
}

.admin-block-type-btn__label {
    font-size: 0.875rem;
    color: var(--text, oklch(20% 0.02 280));
    text-align: center;
    font-weight: 500;
}

/* Template Selection */
.admin-block-editor__templates {
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    padding: var(--space-md, 1rem);
    margin-top: var(--space-md, 1rem);
}

.admin-block-editor__template-select {
    margin-top: var(--space-sm, 0.75rem);
}

/* Blocks Container */
.admin-block-editor__blocks {
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 1rem);
    margin-bottom: var(--space-lg, 1.5rem);
    min-height: 200px;
}

.admin-block-editor__blocks--dragging {
    cursor: move;
}

.admin-block-editor__blocks--dragging .admin-block-card {
    cursor: grabbing;
}

/* Block Card */
.admin-block-card {
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
    border-radius: 8px;
    background: var(--bg-secondary, oklch(95% 0.01 280));
    padding: var(--space-md, 1rem);
    transition: all 0.2s ease;
    position: relative;
    cursor: move;
}

.admin-block-card:hover {
    border-color: var(--accent-primary, oklch(60% 0.2 280));
    box-shadow: 0 4px 12px oklch(0% 0 0 / 0.1);
}

.admin-block-card--dragging {
    opacity: 0.5;
    transform: scale(0.95);
    z-index: 1000;
}

.admin-block-card--drag-over-before {
    border-top: 3px solid var(--accent-primary, oklch(60% 0.2 280));
    padding-top: calc(var(--space-md, 1rem) - 3px);
}

.admin-block-card--drag-over-after {
    border-bottom: 3px solid var(--accent-primary, oklch(60% 0.2 280));
    padding-bottom: calc(var(--space-md, 1rem) - 3px);
}

.admin-block-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm, 0.75rem);
    padding-bottom: var(--space-sm, 0.75rem);
    border-bottom: 1px solid var(--border-light, oklch(75% 0.02 280));
    gap: var(--space-sm, 0.75rem);
}

.admin-block-card__drag-handle {
    cursor: grab;
    color: var(--muted, oklch(50% 0.01 280));
    padding: var(--space-xs, 0.5rem);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
    flex-shrink: 0;
    border-radius: 4px;
}

.admin-block-card__drag-handle:hover {
    color: var(--text, oklch(20% 0.02 280));
    background: var(--bg, oklch(100% 0 0));
}

.admin-block-card__drag-handle:active {
    cursor: grabbing;
}

.admin-block-card__type {
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
    text-transform: capitalize;
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

.admin-block-card__type-icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary, oklch(60% 0.2 280));
}

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

.admin-block-card__preview {
    padding: var(--space-sm, 0.75rem);
    background: var(--bg, oklch(100% 0 0));
    border-radius: 4px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--border-light, oklch(75% 0.02 280));
}

.admin-block-card__preview-text {
    color: var(--muted, oklch(50% 0.01 280));
    font-size: 0.875rem;
    font-style: italic;
}

.admin-block-card__preview-content {
    width: 100%;
    max-height: 200px;
    overflow: hidden;
}

/* Empty State */
.admin-block-editor__empty {
    padding: var(--space-xl, 3rem);
    text-align: center;
    color: var(--muted, oklch(50% 0.01 280));
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 8px;
    border: 2px dashed var(--border-light, oklch(75% 0.02 280));
}

/* Edit Form */
.admin-block-editor__edit-form {
    margin-top: var(--space-lg, 1.5rem);
    padding: var(--space-lg, 1.5rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 8px;
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-block-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md, 1rem);
}

.admin-block-form__actions {
    display: flex;
    gap: var(--space-md, 1rem);
    margin-top: var(--space-lg, 1.5rem);
    padding-top: var(--space-md, 1rem);
    border-top: 1px solid var(--border-light, oklch(75% 0.02 280));
}

/* Preview Controls */
.admin-block-editor__preview-controls {
    margin-top: var(--space-lg, 1.5rem);
    padding-top: var(--space-lg, 1.5rem);
    border-top: 1px solid var(--border-light, oklch(75% 0.02 280));
    display: flex;
    gap: var(--space-sm, 0.75rem);
    align-items: center;
}

.admin-block-editor__preview-toggle {
    padding: var(--space-sm, 0.75rem) var(--space-md, 1rem);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    background: var(--accent-primary, oklch(60% 0.2 280));
    color: var(--bg, oklch(100% 0 0));
}

.admin-block-editor__preview-toggle:hover {
    background: oklch(55% 0.2 280);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px oklch(60% 0.2 280 / 0.3);
}

.admin-block-editor__preview-toggle--active {
    background: var(--accent-success, oklch(58% 0.22 145));
}

/* Preview Area */
.admin-block-editor__preview {
    margin-top: var(--space-lg, 1.5rem);
    padding: var(--space-lg, 1.5rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 8px;
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-block-editor__preview-content {
    margin-top: var(--space-md, 1rem);
    padding: var(--space-md, 1rem);
    background: var(--bg, oklch(100% 0 0));
    border-radius: 4px;
    min-height: 200px;
    border: 1px solid var(--border-light, oklch(75% 0.02 280));
}

.admin-block-editor__preview-error {
    padding: var(--space-md, 1rem);
    background: oklch(95% 0.05 25 / 0.1);
    border: 1px solid var(--accent-error, oklch(60% 0.25 25));
    border-radius: 4px;
    color: var(--accent-error, oklch(60% 0.25 25));
}

.admin-block-editor__preview-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl, 3rem);
    color: var(--muted, oklch(50% 0.01 280));
}

/* Asset Picker Wrapper */
.admin-asset-picker-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs, 0.5rem);
}

.admin-asset-picker-container {
    margin-bottom: var(--space-xs, 0.5rem);
}

.admin-asset-preview {
    display: flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
    padding: var(--space-xs, 0.5rem);
    background: var(--bg-secondary, oklch(95% 0.01 280));
    border-radius: 4px;
    font-size: 0.875rem;
}

.admin-asset-preview__label {
    font-weight: 600;
    color: var(--text, oklch(20% 0.02 280));
}

.admin-asset-preview__value {
    color: var(--muted, oklch(50% 0.01 280));
    font-family: monospace;
    word-break: break-all;
}

/* Buttons */
.admin-btn {
    padding: var(--space-sm, 0.75rem) var(--space-md, 1rem);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs, 0.5rem);
}

.admin-btn--small {
    padding: var(--space-xs, 0.5rem) var(--space-sm, 0.75rem);
    font-size: 0.8125rem;
}

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

.admin-btn--primary:hover {
    background: oklch(55% 0.2 280);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px oklch(60% 0.2 280 / 0.3);
}

.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-tertiary, oklch(92% 0.01 280));
}

.admin-btn--danger {
    background: var(--accent-error, oklch(60% 0.25 25));
    color: var(--bg, oklch(100% 0 0));
}

.admin-btn--danger:hover {
    background: oklch(55% 0.25 25);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px oklch(60% 0.25 25 / 0.3);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .admin-block-editor--split-screen {
        grid-template-columns: 1fr;
    }

    .admin-block-editor__preview-panel {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .admin-block-editor {
        padding: var(--space-md, 1rem);
    }

    .admin-block-editor__block-types {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }

    .admin-block-card__header {
        flex-wrap: wrap;
    }

    .admin-block-card__actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* Drag & Drop Visual Feedback */
@keyframes drag-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.admin-block-editor__blocks--dragging .admin-block-card:not(.admin-block-card--dragging) {
    animation: drag-pulse 1s ease-in-out infinite;
}

/* Block Type Icons */
.admin-block-type-icon {
    width: 24px;
    height: 24px;
    display: inline-block;
    vertical-align: middle;
    margin-right: var(--space-xs, 0.5rem);
}

.admin-block-type-icon--hero {
    background: linear-gradient(135deg, var(--accent-primary, oklch(60% 0.2 280)), oklch(65% 0.2 300));
    border-radius: 4px;
}

.admin-block-type-icon--text {
    background: var(--accent-info, oklch(58% 0.22 240));
    border-radius: 50%;
}

.admin-block-type-icon--image {
    background: var(--accent-success, oklch(58% 0.22 145));
    border-radius: 4px;
}