/* Shared design system for all IAC/ART visualization pages.
   Override --accent (and friends) on a page if it needs a different color. */

:root {
    /* Palette */
    --bg-app: #0a0f1a;
    --bg-panel: #111827;
    --bg-card: #1e293b;
    --bg-card-2: #0f172a;
    --border-soft: #1f2937;
    --border-mid: #334155;
    --border-strong: #475569;

    --text-strong: #f8fafc;
    --text-default: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --text-soft: #cbd5e1;
    --text-inverse: #1e293b;

    --accent: #f59e0b;
    --accent-dark: #d97706;
    --accent-glow: rgba(245, 158, 11, 0.2);
    --accent-soft: #fbbf24;

    --success: #22c55e;
    --warning: #fbbf24;
    --danger: #ef4444;

    /* Sizing */
    --sidebar-width: 340px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    /* Type */
    --font-stack: 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg-app);
    color: var(--text-default);
    font-family: var(--font-stack);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ---------- Sidebar ---------- */
#sidebar {
    width: var(--sidebar-width);
    background: var(--bg-panel);
    padding: 24px;
    border-right: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
#sidebar::-webkit-scrollbar { display: none; }

#sidebar h2 {
    margin: 0 0 4px 0;
    font-size: 1.4rem;
    color: var(--text-strong);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 12px;
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: -4px 0 8px 0;
    line-height: 1.4;
}

.section-header {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 16px 0 8px 0;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-mid);
}

.dataset-info {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    line-height: 1.5;
}
.dataset-info strong { color: var(--text-strong); }

/* ---------- Form controls ---------- */
.param-group { display: flex; flex-direction: column; gap: 6px; }
.param-group label { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }
.param-group input[type="number"],
.param-group input[type="text"],
.param-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-md);
    color: var(--text-strong);
    font-size: 0.95rem;
}
.param-group input[type="number"]:focus,
.param-group input[type="text"]:focus,
.param-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}
.params-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-primary:disabled { background: #374151; cursor: not-allowed; transform: none; }

/* ---------- Scrubber + playback ---------- */
.scrubber-section {
    background: var(--bg-card);
    padding: 16px;
    border-radius: var(--radius-lg);
}
.scrubber-section label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
}
.scrubber-section #stepLabel { color: var(--accent); font-weight: 600; }

input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: var(--border-mid);
    border-radius: 3px;
    cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.playback-controls { display: flex; gap: 8px; margin-top: 12px; }
.playback-controls button {
    flex: 1;
    padding: 8px;
    background: var(--border-mid);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-default);
    cursor: pointer;
    font-size: 0.85rem;
}
.playback-controls button:hover { background: var(--border-strong); }

/* ---------- Episode list ---------- */
.episode-list {
    background: var(--bg-card);
    padding: 12px;
    border-radius: var(--radius-md);
    flex: 1 1 auto;
    min-height: 320px;
    max-height: 70vh;
    overflow-y: auto;
}
.episode-list h4 { margin: 0 0 8px 0; font-size: 0.8rem; color: var(--text-muted); }
.episode-btn {
    display: inline-block;
    padding: 4px 8px;
    background: var(--border-mid);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-default);
    font-size: 0.7rem;
    cursor: pointer;
    margin: 2px;
    transition: all 0.15s;
}
.episode-btn:hover { background: var(--border-strong); }
.episode-btn.active { background: var(--accent); color: var(--text-inverse); }

/* ---------- Hub list (sidebar summary) ---------- */
.hub-list {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-mid);
}
.hub-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 8px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    margin: 4px 0;
    font-size: 0.8rem;
}
.hub-item .hub-id { font-weight: 600; }
.hub-item .members { color: var(--text-muted); font-size: 0.7rem; }

/* ---------- Status line ---------- */
.status {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-align: center;
    padding: 8px;
}
.status.running { color: var(--warning); }
.status.ready   { color: var(--success); }
.status.error   { color: var(--danger); }

/* ---------- Main viz pane ---------- */
#main-container { flex-grow: 1; display: flex; flex-direction: column; overflow: hidden; }
#viz-container { flex-grow: 1; position: relative; overflow: hidden; }
#canvas { width: 100%; height: 100%; }

.node {
    cursor: pointer;
    stroke: var(--bg-card);
    stroke-width: 2px;
    transition: stroke 0.15s, stroke-width 0.15s;
}
.node:hover { stroke: var(--accent-soft); stroke-width: 3px; }
.node.winner { stroke: var(--accent); stroke-width: 4px; }
.node-label {
    fill: var(--text-soft);
    font-size: 10px;
    pointer-events: none;
    font-weight: 500;
}
.layer-label {
    fill: var(--text-dim);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.layer-bg {
    fill: var(--bg-panel);
    stroke: var(--border-soft);
    stroke-width: 1px;
    rx: 12;
}

.connection { fill: none; stroke-opacity: 0.3; pointer-events: none; }
.connection.positive { stroke: var(--success); }
.connection.highlighted { stroke-opacity: 1; stroke-width: 3; }

/* ---------- Tooltips ---------- */
.tooltip {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-mid);
    border-radius: var(--radius-lg);
    padding: 12px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 1000;
    min-width: 180px;
    max-width: 360px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.tooltip.visible { opacity: 1; }
.tooltip-header {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-strong);
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-mid);
}
.tooltip-content { font-size: 0.8rem; color: var(--text-muted); }

/* ---------- Info card (corner overlay) ---------- */
.info-card {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 300px;
    max-height: 350px;
    background: var(--bg-panel);
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
    z-index: 100;
    overflow-y: auto;
}
.info-card h4 { margin: 0 0 12px 0; font-size: 0.85rem; color: var(--text-muted); }
.info-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 0.8rem;
    border-bottom: 1px solid var(--border-soft);
}
.info-row .label { color: var(--text-muted); }
.info-row .value { color: var(--text-default); font-weight: 500; }
.info-row .value.snap    { color: var(--success); }
.info-row .value.recruit { color: var(--accent); }

/* ---------- Legend ---------- */
.legend {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: var(--bg-panel);
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
}
.legend h4 { margin: 0 0 12px 0; font-size: 0.85rem; color: var(--text-muted); }
.legend-gradient { width: 150px; height: 16px; border-radius: var(--radius-sm); margin-bottom: 6px; }
.legend-labels { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--text-dim); }

/* ---------- Pool similarity bars (used in info-card) ---------- */
.pool-similarity-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 4px 0;
}
.pool-similarity-bar .name {
    width: 70px;
    font-size: 0.75rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pool-similarity-bar .bar {
    flex: 1;
    height: 12px;
    background: var(--border-mid);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}
.pool-similarity-bar .fill { height: 100%; border-radius: var(--radius-md); transition: width 0.3s; }
.pool-similarity-bar .threshold {
    position: absolute;
    top: 0; bottom: 0;
    width: 2px;
    background: #fff;
}
.pool-similarity-bar .value {
    width: 40px;
    font-size: 0.75rem;
    text-align: right;
    color: var(--text-default);
}

/* ---------- Reset-view button (top-right of viz) ---------- */
.reset-view-btn {
    position: absolute;
    top: 20px;
    right: 76px;
    padding: 8px 16px;
    background: var(--border-mid);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    color: var(--text-default);
    font-size: 0.85rem;
    cursor: pointer;
    z-index: 100;
    transition: all 0.2s;
}
.reset-view-btn:hover { background: var(--border-strong); border-color: var(--accent); }

/* ---------- PCA chart container (corner overlay) ---------- */
.pca-chart-container {
    position: absolute;
    bottom: 20px;
    left: 20px;
    width: 220px;
    background: var(--bg-panel);
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
    z-index: 100;
    cursor: pointer;
    transition: all 0.3s ease;
}
.pca-chart-container.expanded { width: 660px; }
.pca-chart-container h4 { margin: 0 0 8px 0; font-size: 0.85rem; color: var(--text-muted); }
.pca-dot { transition: r 0.15s; }
.pca-dot:hover { cursor: pointer; }