/* ==========================================================================
   Ontology Explorer — Visualization Styles
   Uses CSS variables from /css/styles.css
   ========================================================================== */

/* --- Vocabulary Color Variables --- */
:root {
    --vocab-core: #0f4c5c;
    --vocab-health: #2a9d8f;
    --vocab-clinical: #e76f51;
    --vocab-checkup: #f4a261;
    --vocab-pots: #264653;
    --vocab-diabetes: #e9c46a;
    --vocab-fhir: #da4167;
    --vocab-snomed: #7b2d8e;
    --vocab-loinc: #3d5a80;
    --vocab-prov: #457b9d;
}

/* --- Loading State --- */
.loading-container {
    text-align: center;
    padding: var(--space-4xl) 0;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--space-lg);
}

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

#loading-progress {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--space-sm);
}

/* --- Stats Bar --- */
.ontology-stats {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    flex: 1;
    min-width: 80px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Tab Navigation --- */
.tab-bar {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: var(--space-xl);
}

.tab-btn {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

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

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
}

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

.tab-panel {
    display: none;
}

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

/* --- Sub-Tab Navigation --- */
.sub-tab-bar {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.sub-tab-btn {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.sub-tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.sub-tab-btn:hover:not(.active) {
    border-color: var(--accent);
    color: var(--primary);
}

/* --- Graph Controls --- */
.graph-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.graph-filters {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.graph-filters label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.graph-actions {
    display: flex;
    gap: var(--space-sm);
}

/* --- Vocabulary Chips --- */
.vocab-chip {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.vocab-chip.inactive {
    opacity: 0.3;
}

.vocab-chip.vocab-core { background: var(--vocab-core); }
.vocab-chip.vocab-health { background: var(--vocab-health); }
.vocab-chip.vocab-clinical { background: var(--vocab-clinical); }
.vocab-chip.vocab-checkup { background: var(--vocab-checkup); }
.vocab-chip.vocab-pots { background: var(--vocab-pots); }
.vocab-chip.vocab-diabetes { background: var(--vocab-diabetes); color: #1a1a2e; }

/* --- Vocab Selector (Class Hierarchy view) --- */
.vocab-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.vocab-selector label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.vocab-selector-chip {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 2px solid var(--border);
}

.vocab-selector-chip.active {
    background: var(--chip-color, var(--primary));
    color: white;
    border-color: var(--chip-color, var(--primary));
}

.vocab-selector-chip:hover:not(.active) {
    border-color: var(--chip-color, var(--accent));
    color: var(--text);
}

/* --- Graph Viewport --- */
.graph-viewport {
    width: 100%;
    height: 75vh;
    min-height: 500px;
    max-height: 900px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: white;
    position: relative;
}

/* --- Graph Legend --- */
.graph-legend {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-md);
    margin-top: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    display: inline-block;
    flex-shrink: 0;
}

.legend-swatch.diamond {
    transform: rotate(45deg);
    width: 11px;
    height: 11px;
}

/* --- Detail Panel --- */
.detail-panel {
    position: fixed;
    right: 0;
    top: 0;
    width: 420px;
    max-width: 90vw;
    height: 100vh;
    background: white;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    padding: var(--space-xl);
    overflow-y: auto;
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.detail-panel.visible {
    transform: translateX(0);
}

.detail-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 999;
    display: none;
}

.detail-overlay.visible {
    display: block;
}

.detail-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--space-xs);
    line-height: 1;
}

.detail-close:hover {
    color: var(--text);
}

.detail-panel h3 {
    font-family: var(--font-mono);
    color: var(--primary);
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
    padding-right: var(--space-xl);
}

.detail-panel .detail-type {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.detail-panel .detail-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.detail-section {
    margin-bottom: var(--space-lg);
}

.detail-section h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.detail-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.detail-section li {
    font-size: 0.875rem;
    padding: var(--space-xs) 0;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.detail-section .code-link {
    color: var(--accent-dark);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.detail-section .code-link:hover {
    text-decoration: underline;
}

.detail-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-left: var(--space-xs);
}

.detail-badge.deprecated {
    background: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid var(--warning-border);
}

/* --- Table Controls --- */
.table-controls {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

.filter-select {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    background: white;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent);
}

.table-container {
    display: none;
    overflow-x: auto;
}

.table-container.active {
    display: block;
}

/* --- Data Tables --- */
.ontology-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.ontology-table thead {
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 1;
}

.ontology-table th {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    font-weight: 600;
    color: var(--text);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.ontology-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-light);
    vertical-align: top;
}

.ontology-table tbody tr:hover {
    background: var(--bg-secondary);
}

.ontology-table code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background: var(--code-inline-bg);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    color: var(--code-inline-text);
}

.td-description {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.td-code {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Sort indicators */
th[data-sort] {
    cursor: pointer;
    user-select: none;
}

th[data-sort]:hover {
    color: var(--accent-dark);
}

th[data-sort]::after {
    content: ' \2195';
    opacity: 0.3;
    font-size: 0.8em;
}

th[data-sort].sort-asc::after {
    content: ' \2191';
    opacity: 1;
}

th[data-sort].sort-desc::after {
    content: ' \2193';
    opacity: 1;
}

/* Result count */
.table-result-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .graph-viewport {
        height: 50vh;
        min-height: 350px;
        max-height: 500px;
    }

    .detail-panel {
        width: 100vw;
        max-width: 100vw;
    }

    .tab-bar {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .sub-tab-bar {
        flex-wrap: wrap;
    }

    .table-controls {
        flex-direction: column;
    }

    .search-input {
        width: 100%;
    }

    .ontology-stats {
        justify-content: center;
    }

    .graph-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .td-description {
        display: none;
    }

    .ontology-table th:nth-child(4) {
        display: none;
    }
}

@media (max-width: 480px) {
    .graph-viewport {
        height: 40vh;
        min-height: 280px;
        max-height: 400px;
    }

    .sub-tab-btn {
        font-size: 0.75rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .ontology-stats {
        gap: var(--space-md);
    }

    .stat-value {
        font-size: 1.25rem;
    }
}