/* Traversal explorer — side-by-side graph panels with their own scope.
   CSS is intentionally parallel to ask-graph.css (same visual vocabulary)
   but lives under .explorer-container so /ask is unaffected. */

.explorer-shell {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 16px 0 24px;
}

.explorer-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: #f7f8fa;
    border: 1px solid #e3e6eb;
    border-radius: 6px;
    font-size: 14px;
}
.explorer-controls label { color: #444; font-weight: 500; }
.explorer-controls select {
    padding: 4px 8px;
    font-size: 13px;
    border: 1px solid #c5cbd3;
    border-radius: 4px;
    background: white;
    min-width: 320px;
    max-width: 640px;
}
.explorer-controls .explorer-meta {
    color: #666;
    font-size: 12px;
    margin-left: auto;
}

.explorer-question-card {
    padding: 10px 14px;
    background: #fbfbfc;
    border-left: 3px solid #4c78a8;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.45;
}
.explorer-question-card .explorer-q-id {
    font-weight: 600;
    color: #4c78a8;
    margin-right: 6px;
}
.explorer-question-card .explorer-q-category {
    display: inline-block;
    padding: 1px 8px;
    background: #eef1f5;
    color: #555;
    border-radius: 10px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-left: 4px;
}
.explorer-question-card .explorer-q-gold {
    margin-top: 6px;
    font-size: 12px;
    color: #666;
}
.explorer-question-card .explorer-q-gold code {
    background: #eef1f5;
    padding: 0 4px;
    border-radius: 3px;
    font-size: 11px;
}

.explorer-panels {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
@media (max-width: 960px) {
    .explorer-panels { grid-template-columns: 1fr; }
}

.explorer-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid #dfe3e8;
    border-radius: 6px;
    overflow: hidden;
    background: white;
}
.explorer-panel-header {
    padding: 8px 12px;
    border-bottom: 1px solid #dfe3e8;
    background: #f7f8fa;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
}
.explorer-panel-header h3 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: #222;
}
.explorer-panel-header .explorer-panel-score {
    font-size: 12px;
    color: #555;
    font-family: ui-monospace, SFMono-Regular, monospace;
}

.explorer-graph {
    height: 520px;
    overflow: hidden;
    position: relative;
    background: white;
}
.explorer-graph .empty-state {
    color: #888;
    text-align: center;
    padding: 40px 20px;
    font-size: 13px;
}

.explorer-panel-answer {
    border-top: 1px solid #eee;
    padding: 10px 14px;
    font-size: 13px;
    line-height: 1.5;
    color: #333;
    max-height: 180px;
    overflow-y: auto;
    background: #fcfcfd;
}
.explorer-panel-answer p:first-child { margin-top: 0; }
.explorer-panel-answer p:last-child { margin-bottom: 0; }

/* --- Graph SVG --- */

.explorer-container .ex-graph-svg {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
}
.explorer-container .ex-graph-svg:active { cursor: grabbing; }

.explorer-container .ex-tree-link {
    fill: none;
    stroke: #d0d5dd;
    stroke-width: 1;
}
.explorer-container .ex-tree-link.ex-traversed {
    stroke: #e45756;
    stroke-width: 1.6;
}

.explorer-container .ex-node circle {
    cursor: default;
    transition: r 180ms ease-out, stroke-width 180ms ease-out;
}

.explorer-container .ex-node-root circle,
.explorer-container .ex-node-section circle {
    stroke: white;
    stroke-width: 1;
}
.explorer-container .ex-node.ex-visited-ancestor circle {
    stroke: #e45756;
    stroke-width: 1.4;
}
.explorer-container .ex-node.ex-intense-ancestor circle {
    stroke: #4c78a8;
    stroke-width: 1.2;
}

.explorer-container .ex-node-entity circle {
    stroke: white;
    stroke-width: 0.8;
}

.explorer-container .ex-node-section .ex-section-label,
.explorer-container .ex-node-root .ex-root-label {
    font-size: 11px;
    font-family: system-ui, -apple-system, sans-serif;
    fill: #333;
    pointer-events: none;
}
.explorer-container .ex-node .ex-order {
    font-family: ui-monospace, SFMono-Regular, monospace;
    pointer-events: none;
}
.explorer-container .ex-node .ex-count {
    font-family: ui-monospace, SFMono-Regular, monospace;
    pointer-events: none;
}