/* Palette: dataviz reference instance, dark steps (validated: S/I/R all-pairs, chart lines adjacent) */
:root {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #222220;
  --text: #f0efec;
  --text-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);

  --s: #3987e5;    /* susceptible */
  --i: #d95926;    /* infected */
  --r: #199e70;    /* recovered */
  --inf: #c98500;  /* informed */
  --uninf: #6f7889; /* not informed */
  --misinf: #d55181; /* misinformed (always paired with the won't-adhere slash) */
  --q: #9085e9;    /* quarantining */
  --sel: #f0efec;  /* selection */

  --panel-w: 500px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--page); color: var(--text); }
body { overflow: hidden; font-size: 13px; line-height: 1.4; }
button, input, select { font: inherit; color: inherit; }

#app { display: flex; height: 100vh; }

/* ------------------------------------------------------------ stage ---- */
#stage {
  position: relative; flex: 1; min-width: 0;
  background: radial-gradient(ellipse at 50% 45%, #1b1c20 0%, #111113 55%, #0b0b0c 100%);
  overflow: hidden;
}
#canvas-host, #canvas-host canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
#canvas-host { touch-action: none; }

.layer-label {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-2); padding: 4px 10px; border-radius: 999px;
  background: rgba(26, 26, 25, 0.75); border: 1px solid var(--border);
  pointer-events: none; white-space: nowrap;
}
.layer-label b { color: var(--text); font-weight: 600; }

#marquee {
  position: absolute; border: 1px dashed var(--sel);
  background: rgba(240, 239, 236, 0.06); pointer-events: none; z-index: 5;
}

#hover-tip {
  position: absolute; z-index: 6; pointer-events: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 8px; font-size: 12px; white-space: nowrap;
  box-shadow: 0 6px 18px rgba(0,0,0,.4);
}

#view-bar {
  position: absolute; top: 14px; left: 14px; display: flex; gap: 8px; z-index: 4; flex-wrap: wrap;
}
.seg { display: inline-flex; background: rgba(26,26,25,.85); border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
.seg button { background: none; border: 0; padding: 5px 10px; border-radius: 6px; color: var(--text-2); cursor: pointer; }
.seg button.on { background: var(--surface-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }
.seg button:hover:not(.on) { color: var(--text); }
button.ghost {
  background: rgba(26,26,25,.85); border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 10px; color: var(--text-2); cursor: pointer;
}
button.ghost:hover { color: var(--text); }

#help {
  position: absolute; left: 14px; bottom: 12px; right: 14px; z-index: 3;
  display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 11.5px; pointer-events: none;
}
kbd {
  font-family: inherit; font-size: 10.5px; color: var(--text-2);
  border: 1px solid var(--axis); border-bottom-width: 2px; border-radius: 4px; padding: 0 4px;
}

#toast {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%); z-index: 20;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 14px; box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
#toast.error { border-color: rgba(230,103,103,.6); }

#loading {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px;
  color: var(--text-2); background: rgba(13,13,13,.6); z-index: 30;
}
#loading[hidden] { display: none; }
.spinner { width: 18px; height: 18px; border: 2px solid var(--axis); border-top-color: var(--text); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------- cards ---- */
.card {
  position: absolute; z-index: 10; width: 316px;
  background: rgba(26, 26, 25, 0.96); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,.55); padding: 12px 14px 14px;
  backdrop-filter: blur(6px);
}
#group-card { top: 58px; left: 14px; width: 320px; max-height: calc(100% - 110px); overflow: auto; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.card-head h2 { font-size: 15px; margin: 0; font-weight: 600; }
.card-head .sub { color: var(--muted); font-size: 12px; }
.card .close {
  background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 18px; line-height: 1; padding: 2px 4px; border-radius: 4px;
}
.card .close:hover { color: var(--text); background: var(--surface-2); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border); font-size: 12px; color: var(--text);
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--c); }
.chip .hollow { width: 10px; height: 10px; border-radius: 50%; border: 3px solid var(--c, var(--text-2)); }
.chip.off { color: var(--muted); }
.chip .muted { font-size: 11px; }

.kv { display: grid; grid-template-columns: 1fr auto; gap: 3px 12px; margin: 0 0 10px; }
.kv dt { color: var(--text-2); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

table.metrics { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; margin-bottom: 10px; }
table.metrics th { font-weight: 500; color: var(--muted); font-size: 11px; text-align: right; padding: 2px 0 4px; }
table.metrics th:first-child { text-align: left; }
table.metrics td { text-align: right; padding: 3px 0; border-top: 1px solid var(--grid); }
table.metrics td:first-child { text-align: left; color: var(--text-2); }
table.metrics .pct { color: var(--muted); font-size: 11px; margin-left: 4px; }

.layer-title { font-size: 11.5px; color: var(--muted); margin: 10px 0 6px; padding-bottom: 3px; border-bottom: 1px solid var(--grid); }
.layer-title b { color: var(--text-2); font-weight: 600; }
.sub-title { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 10px 0 6px; }

.strip { display: flex; height: 14px; border-radius: 3px; overflow: hidden; gap: 1px; }
.strip i { flex: 1; min-width: 1px; position: relative; }
.strip i.inf::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--inf); }
.strip i.mis::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--misinf); }
.strip-wrap { padding-bottom: 5px; }
.strip-axis { display: flex; justify-content: space-between; color: var(--muted); font-size: 10.5px; margin-top: 5px; }

.stack { display: flex; height: 12px; border-radius: 4px; overflow: hidden; gap: 2px; margin: 4px 0 4px; }
.stack span { display: block; height: 100%; }
.stack-labels { display: flex; gap: 12px; font-size: 12px; color: var(--text-2); flex-wrap: wrap; }
.stack-labels b { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }
.stack-labels .sw { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 4px; background: var(--c); }

.stat-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 6px; margin: 8px 0 4px; }
.stat-grid div { background: var(--surface-2); border-radius: 8px; padding: 6px 8px; }
.stat-grid b { display: block; font-size: 15px; font-weight: 600; }
.stat-grid span { color: var(--muted); font-size: 11px; }

/* ------------------------------------------------------------- panel ---- */
#panel {
  width: var(--panel-w); flex: none; height: 100vh; overflow-y: auto;
  background: var(--surface); border-left: 1px solid var(--border);
  padding: 16px 16px 24px; display: flex; flex-direction: column; gap: 16px;
}
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; }
.panel-head h1 { font-size: 17px; margin: 0 0 2px; font-weight: 650; letter-spacing: -0.01em; }
.tick { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; flex: none; margin-left: 12px; }
.tick .muted { font-size: 13px; font-weight: 400; }
.muted { color: var(--muted); }
.small { font-size: 11.5px; }
.section-title { font-size: 12px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }

.transport { display: flex; align-items: center; gap: 8px; }
.transport button { cursor: pointer; border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); display: inline-flex; align-items: center; justify-content: center; }
.transport button svg { width: 18px; height: 18px; }
.transport .icon { width: 36px; height: 36px; color: var(--text-2); }
.transport .icon:hover:not(:disabled) { color: var(--text); }
button.primary {
  background: var(--text); color: var(--page); border: 0; font-weight: 600; gap: 6px; padding: 0 14px; height: 36px; border-radius: 8px; cursor: pointer;
}
button.primary:hover { background: #ffffff; }
button:disabled { opacity: .4; cursor: default; }
#btn-play .i-pause { display: none; }
#btn-play.playing .i-pause { display: block; }
#btn-play.playing .i-play { display: none; }
.speed { display: flex; align-items: center; gap: 6px; margin-left: auto; font-size: 12px; }
.speed input { width: 70px; accent-color: var(--text-2); }
#speed-value { width: 26px; text-align: right; font-variant-numeric: tabular-nums; color: var(--text-2); }

.tiles { display: grid; grid-template-columns: repeat(var(--cols, 5), minmax(max-content, 1fr)); gap: 5px; }
.tile { background: var(--surface-2); border-radius: 8px; padding: 7px 8px; min-width: 0; }
.tile .lab { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-2); white-space: nowrap; overflow: hidden; }
.tile .sw { width: 8px; height: 3px; border-radius: 2px; background: var(--c); flex: none; }
.tile .sw.dashed { background: repeating-linear-gradient(90deg, var(--c) 0 3px, transparent 3px 5px); }
.tile .val { font-size: 17px; font-weight: 600; margin-top: 2px; }
.tile .pct { font-size: 11px; color: var(--muted); }

.line-chart { position: relative; }
.line-chart svg { display: block; width: 100%; overflow: visible; }
.line-chart .tip {
  position: absolute; pointer-events: none; background: var(--page); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 8px; font-size: 11.5px; white-space: nowrap; z-index: 2;
  box-shadow: 0 6px 18px rgba(0,0,0,.5);
}
.line-chart .tip .row { display: flex; align-items: center; gap: 6px; justify-content: space-between; }
.line-chart .tip .sw { width: 10px; height: 3px; border-radius: 2px; background: var(--c); }
.line-chart .tip b { font-variant-numeric: tabular-nums; font-weight: 600; margin-left: 10px; }

.legend ul { list-style: none; margin: 0 0 8px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 5px 10px; }
.legend li { display: flex; align-items: center; gap: 7px; color: var(--text-2); font-size: 12px; }
.k-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--c); flex: none; box-sizing: content-box; }
/* Slash from top-left to bottom-right, matching the scene's won't-adhere glyph */
.k-dot.slashed, .chip .dot.slashed { background: linear-gradient(45deg, var(--c) 40%, var(--surface) 40% 60%, var(--c) 60%); }
.k-dot.hollow { background: none; border: 3.5px solid var(--c); width: 5px; height: 5px; }
.k-dot.diamond { border-radius: 1.5px; width: 9px; height: 9px; margin: 0 1.5px; transform: rotate(45deg); }
.chip .dot.diamond { border-radius: 1px; width: 7px; height: 7px; transform: rotate(45deg); }
.k-dot.selected { box-shadow: 0 0 0 1.5px var(--surface), 0 0 0 3px var(--sel); width: 9px; height: 9px; margin: 0 1.5px; }
.k-line { width: 16px; height: 0; border-top: 2px solid var(--c); flex: none; }
.k-line.dashed { border-top-style: dashed; }
.k-line.link { border-top: 2px dashed var(--sel); }
.toggle { display: flex; align-items: center; gap: 6px; margin-top: 8px; color: var(--text-2); cursor: pointer; }

.scenario { border-top: 1px solid var(--border); padding-top: 12px; }
.scenario summary { cursor: pointer; font-weight: 600; color: var(--text-2); }
.scenario form { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.scenario label { display: flex; flex-direction: column; gap: 3px; font-size: 11.5px; color: var(--muted); }
.scenario label.check { flex-direction: row; align-items: center; gap: 6px; padding-top: 16px; color: var(--text-2); }
.scenario input:not([type=checkbox]), .scenario select {
  background: var(--page); border: 1px solid var(--axis); border-radius: 6px; padding: 5px 7px; width: 100%; min-width: 0;
}
.row2 { display: grid; grid-template-columns: 1.4fr 1fr; gap: 8px; }
.row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.scenario .layer-title { margin: 6px 0 0; }
.scenario label.inline { flex-direction: row; align-items: center; justify-content: space-between; gap: 10px; }
.scenario label.inline input { width: 110px; }
.hint { font-size: 11.5px; color: var(--muted); line-height: 1.45; }
.hint:empty { display: none; }
[data-when][hidden], .form-error[hidden], .legend [hidden], #misinfo-fields[hidden] { display: none !important; }
.hint b { color: var(--text-2); font-weight: 600; }
.form-error {
  font-size: 12px; color: var(--text); background: rgba(217, 89, 38, 0.14);
  border: 1px solid rgba(217, 89, 38, 0.55); border-radius: 6px; padding: 7px 9px; line-height: 1.45;
}
#network-stats { margin-top: 2px; }
button.wide { width: 100%; margin-top: 4px; }

/* ------------------------------------------------------ seed selection ---- */
.policy [hidden] { display: none !important; }
.sub-title-row { display: flex; align-items: center; gap: 8px; margin: 10px 0 6px; flex-wrap: wrap; }
.sub-title-row .sub-title { margin: 0 auto 0 0; }
.seg.small button { padding: 2px 8px; font-size: 11.5px; }
.chart-legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 11.5px; color: var(--text-2); margin-top: 6px; }
.chart-legend > span { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend .sw { width: 16px; height: 0; border-top: 2px solid var(--c); }
.chart-legend .sw.bar { width: 9px; height: 9px; border: 0; border-radius: 2px; background: var(--c); }
.chart-legend .sw.dash { border-top-style: dashed; }
.chart-legend .sw.dot { border-top-style: dotted; }
.seed-chart { position: relative; }
.seed-chart svg { display: block; width: 100%; overflow: visible; }
.seed-chart .tip {
  position: absolute; pointer-events: none; background: var(--page); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 8px; font-size: 11.5px; white-space: nowrap; z-index: 2;
  box-shadow: 0 6px 18px rgba(0,0,0,.5);
}
.seed-chart .tip .row { display: flex; align-items: center; gap: 6px; justify-content: space-between; }
.seed-chart .tip .sw { width: 9px; height: 9px; border-radius: 2px; background: var(--c); }
.seed-chart .tip b { font-variant-numeric: tabular-nums; font-weight: 600; margin-left: 10px; }
.sub-label { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.algo-fields { display: flex; flex-direction: column; gap: 8px; }
.scenario .checks { display: flex; gap: 14px; flex-wrap: wrap; }
.scenario .checks label.check, .algo-fields > label.check { padding-top: 0; }

@media (max-width: 900px) {
  #app { flex-direction: column; }
  #stage { min-height: 62vh; }
  #panel { width: 100%; height: auto; border-left: 0; border-top: 1px solid var(--border); }
  .tiles { grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); }
  body { overflow: auto; }
  #help { display: none; }
}

/* ------------------------------------------------------- multiplexes ---- */
:root {
  /* Accent per multiplex slot: mirrors SLOT_COLORS in js/palette.js */
  --slot-0: #e6e4dc;
  --slot-1: #e377c2;
  --slot-2: #17becf;
}
.slot-badge {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  min-width: 17px; height: 17px; padding: 0 4px; border-radius: 4px; margin-right: 6px;
  background: var(--slot, var(--text-2)); color: var(--page);
  font-size: 11px; font-weight: 700; letter-spacing: 0; text-transform: none; vertical-align: 1px;
}
.layer-label { border-color: color-mix(in srgb, var(--slot, #fff) 55%, transparent); }
.tick .slot-badge { font-size: 12px; height: 20px; min-width: 20px; vertical-align: 3px; }
#hover-tip .slot-badge { height: 15px; min-width: 15px; font-size: 10px; margin-right: 4px; }

.slot-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-top: -6px; }
.slot-tab {
  display: flex; align-items: center; gap: 2px; padding: 5px 6px 5px 8px; min-width: 0;
  background: var(--surface-2); border: 1px solid var(--border); border-left: 3px solid var(--slot);
  border-radius: 8px; cursor: pointer; flex: 1 1 120px;
}
.slot-tab:hover { border-color: color-mix(in srgb, var(--slot) 45%, transparent); border-left-color: var(--slot); }
.slot-tab.on { background: color-mix(in srgb, var(--slot) 10%, var(--surface-2)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--slot) 70%, transparent); }
.slot-tab:focus-visible { outline: 2px solid var(--slot); outline-offset: 1px; }
.slot-meta { display: flex; flex-direction: column; min-width: 0; line-height: 1.25; }
.slot-meta b { font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.slot-meta .muted { font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.slot-remove {
  margin-left: auto; background: none; border: 0; color: var(--muted); cursor: pointer;
  font-size: 16px; line-height: 1; padding: 2px 5px; border-radius: 4px;
}
.slot-remove:hover { color: var(--text); background: var(--surface); }
.slot-add {
  flex: 0 1 auto; background: none; border: 1px dashed var(--axis); border-radius: 8px;
  color: var(--text-2); padding: 5px 10px; cursor: pointer;
}
.slot-add:hover { color: var(--text); border-color: var(--muted); }

#node-card, #group-card { border-top: 2px solid var(--slot, var(--border)); }

/* Preliminary baseline collection: amber dashed, so it never reads as the experiment */
#phase-banner {
  position: absolute; top: 58px; left: 50%; transform: translateX(-50%); z-index: 8;
  width: min(560px, calc(100% - 28px)); padding: 9px 13px; border-radius: 10px;
  background: rgba(26, 26, 25, 0.96); border: 1px dashed rgba(201, 133, 0, 0.75);
  box-shadow: 0 10px 30px rgba(0,0,0,.5); display: flex; flex-direction: column; gap: 4px;
}
#phase-banner[hidden] { display: none; }
.phase-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--inf); font-weight: 600;
}
.spinner.small { width: 11px; height: 11px; border-width: 2px; border-top-color: var(--inf); }

#baseline-wrap.collecting { border: 1px dashed rgba(201, 133, 0, 0.6); border-radius: 8px; padding: 2px 10px 10px; }
#baseline-wrap.collecting .sub-title { color: var(--inf); }
.progress { height: 6px; border-radius: 3px; background: var(--grid); overflow: hidden; margin: 6px 0 8px; }
.progress span { display: block; height: 100%; width: 0; background: var(--inf); transition: width .2s ease; }
#baseline-chart { margin-top: 6px; }

.note { font-size: 11px; color: var(--muted); line-height: 1.45; margin: -4px 0 10px; }
.note b { color: var(--text-2); font-weight: 500; }
#tie-weights-row[hidden] { display: none; }
.scenario label.check#tie-weights-row { padding-top: 0; }
table.ties td:first-child .muted { font-size: 10.5px; margin-left: 3px; }
table.ties tr.none td { color: var(--muted); }
.hint table.ties { margin: 8px 0 6px; }
.hint .note { margin: 0; }
.kv .pct { color: var(--muted); font-size: 11px; margin-left: 6px; }
table.ties td + td, table.ties th + th { padding-left: 10px; }