/* assets/css/dataset-editor.css */

.dataset-view-layout {
    display: flex;
    height: 100%;
    gap: 1.5rem;
}

.dataset-list-panel {
    width: 280px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dataset-detail-panel {
    flex-grow: 1;
    min-width: 0; /* Prevents flexbox from overflowing */
}

.rel-notes {
    display: inline-block;
    max-width: 320px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: help;
}

.dataset-list-header {
    display: grid;
    gap: 0.5rem;
}

.dataset-list {
    overflow-y: auto;
    display: grid;
    gap: 0.5rem;
}

.dataset-list-item {
    padding: 0.65rem 0.75rem;
    border-radius: var(--radius);
    cursor: pointer;
    border: 1px solid transparent;
    background: var(--bg-card);
    transition: background-color 0.2s, border-color 0.2s;
    font-weight: 500;
}

.dataset-list-item:hover {
    background-color: var(--bg-hover);
}

.dataset-list-item.active {
    background-color: var(--accent-light);
    border-color: var(--accent);
    color: var(--text-primary);
}

.dataset-detail-header {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dataset-detail-title {
    font-size: 1.75rem;
    font-weight: 600;
}

.dataset-settings {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.dataset-settings .form-grid {
    display: grid;
    gap: 0.9rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.dataset-settings .form-grid.single-col {
    grid-template-columns: minmax(0, 1fr);
}

.dataset-settings .form-group {
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.dataset-settings .form-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.settings-section {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
}

.settings-section:last-of-type {
    border-bottom: none;
}

.settings-section-header {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.panel-loading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background: var(--background-color);
    color: var(--text-color-secondary);
    margin-bottom: 1rem;
}

.dataset-detail-panel.ai-busy::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.12);
    pointer-events: none;
}

.dataset-detail-panel.ai-busy {
    position: relative;
}

.tab-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.tab-btn {
    padding: 0.75rem 1.25rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px; /* Align with parent border */
    transition: color 0.2s, border-color 0.2s;
}

.tab-btn:hover {
    color: var(--text-color-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

/* Slimmer upload zone for the tab */
.tab-content .upload-zone {
    padding: 2rem;
    text-align: center;
}

/* Empty state for when no dataset is selected */
#dataset-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-color-secondary);
}

#dataset-empty-state .empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--border-color-dark);
}

@media (max-width: 900px) {
    .dataset-view-layout {
        flex-direction: column;
        gap: 1rem;
    }

    .dataset-list-panel {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding-right: 0;
        padding-bottom: 1rem;
    }

    .dataset-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .tab-nav {
        flex-wrap: wrap;
    }

    .tab-btn {
        padding: 0.6rem 0.9rem;
    }
}