/* AIM-3D Explorer — instrument-panel aesthetic
   Palette: paper / ink navy / polyarchy blue / decline red */
:root {
  --paper: #fbfbf9;
  --card: #ffffff;
  --ink: #16233b;
  --text: #2a3342;
  --muted: #6b7486;
  --line: #d9dce3;
  --line-soft: #eceef2;
  --blue: #2456c4;
  --blue-deep: #173a85;
  --blue-soft: #dbe4f7;
  --red: #b3372e;
  --red-soft: #f2ded9;
  --amber: #9a6b1f;
  --amber-soft: #f4ead2;
  --grey-cell: #eef0f3;
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
}

/* ── Masthead ─────────────────────────────────────────── */
.masthead {
  background: var(--ink);
  color: #eef1f7;
  border-bottom: 3px solid var(--blue);
}
.masthead-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 32px 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
}
.brand-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #93a3c4;
}
.brand-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 30px;
  line-height: 1.15;
  margin: 6px 0 8px;
  color: #ffffff;
  max-width: 640px;
}
.brand-sub {
  margin: 0;
  max-width: 640px;
  color: #b9c3d8;
  font-size: 13.5px;
}
.panel-switch { display: flex; gap: 10px; }
.panel-tag {
  font-family: var(--sans);
  text-align: left;
  background: transparent;
  color: #cfd8e8;
  border: 1px solid #3c4d70;
  border-radius: 6px;
  padding: 10px 16px;
  cursor: pointer;
  min-width: 190px;
  transition: background 0.15s, border-color 0.15s;
}
.panel-tag:hover { border-color: #6d82ab; }
.panel-tag.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}
.panel-tag .tag-name { display: block; font-weight: 600; font-size: 14px; }
.panel-tag .tag-meta { display: block; font-family: var(--mono); font-size: 10.5px; margin-top: 3px; opacity: 0.85; }
.panel-tag:focus-visible, .rail-link:focus-visible, button:focus-visible,
select:focus-visible, input:focus-visible, a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ── Frame: rail + stage ──────────────────────────────── */
.frame {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 172px 1fr;
  gap: 0;
  min-height: 70vh;
}
.rail {
  border-right: 1px solid var(--line);
  padding: 28px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: 0;
  align-self: start;
}
.rail-link {
  display: block;
  padding: 8px 20px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  border-left: 3px solid transparent;
}
.rail-link:hover { color: var(--ink); }
.rail-link.active {
  color: var(--blue-deep);
  border-left-color: var(--blue);
  background: linear-gradient(90deg, var(--blue-soft), transparent 85%);
}
.stage { padding: 34px 36px 64px; min-width: 0; }
.loading { color: var(--muted); font-family: var(--mono); font-size: 13px; padding: 40px 0; }

/* ── View headers ─────────────────────────────────────── */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-deep);
}
.view-head h2 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  margin: 6px 0 10px;
}
.block-title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 36px 0 10px;
}
.view-lede { max-width: 720px; margin: 0 0 18px; color: var(--text); }

/* ── Controls ─────────────────────────────────────────── */
.controls-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 14px 0 18px;
}
.ctl-label { font-size: 13px; font-weight: 600; color: var(--ink); }
.ctl-toggle { font-size: 13.5px; display: inline-flex; align-items: center; gap: 7px; cursor: pointer; }
.ctl-select, .ctl-search {
  font-family: var(--sans);
  font-size: 13.5px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--card);
  color: var(--text);
  max-width: 340px;
}
.ctl-search { min-width: 240px; }
.btn-quiet {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-deep);
  background: var(--blue-soft);
  border: 1px solid transparent;
  border-radius: 5px;
  padding: 7px 14px;
  cursor: pointer;
}
.btn-quiet:hover { background: #cdd9f2; }
.btn-quiet[aria-expanded="true"] { background: var(--blue); color: #fff; }

.legend-inline { font-size: 12.5px; color: var(--muted); display: inline-flex; gap: 14px; align-items: center; }
.swatch { display: inline-block; width: 13px; height: 13px; border-radius: 3px; vertical-align: -2px; margin-right: 5px; }

/* ── Matrix ───────────────────────────────────────────── */
.matrix-wrap { overflow-x: auto; padding-bottom: 8px; }
.matrix { border-collapse: collapse; font-family: var(--mono); }
.matrix th {
  font-weight: 500;
  font-size: 10px;
  color: var(--muted);
  padding: 2px 3px;
}
.matrix thead th {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  text-align: left;
  height: 96px;
  vertical-align: bottom;
}
.matrix tbody th { text-align: right; padding-right: 8px; white-space: nowrap; }
.matrix th button {
  font: inherit; color: inherit; background: none; border: none;
  cursor: pointer; padding: 1px 2px; border-radius: 3px;
}
.matrix th button:hover { color: var(--blue-deep); background: var(--blue-soft); }
.matrix th.is-selected button { color: var(--blue-deep); font-weight: 600; }
.matrix td {
  width: 15px; height: 15px; min-width: 15px;
  border: 1px solid var(--line-soft);
  padding: 0;
  position: relative;
}
.matrix td.diag { background: repeating-linear-gradient(45deg, #f2f3f5 0 2px, #fff 2px 4px); }
.matrix td.grey-target { background: var(--grey-cell); }
.matrix td .agg-mark {
  position: absolute; inset: 0;
  border: 1.5px solid var(--amber);
  pointer-events: none;
}
.tooltip {
  position: fixed;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  font-family: var(--sans);
  font-size: 12px;
  line-height: 1.45;
  padding: 8px 11px;
  border-radius: 5px;
  max-width: 300px;
  white-space: pre-line;
  pointer-events: none;
  box-shadow: 0 2px 10px rgba(22,35,59,0.25);
}
.tooltip .tip-id { font-family: var(--mono); font-size: 10.5px; color: #93a3c4; display: block; margin-top: 2px; }
.matrix th button { cursor: help; }

/* ── Ego panel ────────────────────────────────────────── */
.ego {
  margin-top: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue);
  border-radius: 6px;
  padding: 18px 22px;
}
.ego h3 { font-family: var(--serif); font-size: 18px; margin: 0 0 2px; color: var(--ink); }
.ego .ego-id { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.ego .ego-meta { font-size: 13px; color: var(--muted); margin: 8px 0 14px; }
.ego-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.ego-cols h4 {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 8px;
}
.ego-edge {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 5px 0; border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
}
.ego-edge .mono { font-family: var(--mono); font-size: 12px; }
.ego-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.ego-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.seg-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 5px; overflow: hidden; }
.seg-toggle .seg {
  font-family: var(--sans); font-size: 12.5px; font-weight: 500;
  background: var(--card); color: var(--muted);
  border: none; padding: 6px 13px; cursor: pointer;
}
.seg-toggle .seg + .seg { border-left: 1px solid var(--line); }
.seg-toggle .seg:hover { background: var(--paper); color: var(--ink); }
.seg-toggle .seg.on { background: var(--blue); color: #fff; }
.ego-net-host { margin-top: 10px; }
.ego-net { width: 100%; height: auto; display: block; }
.ego-net-node, .ego-net-label { cursor: pointer; }
.ego-net-node:hover { stroke-width: 3; }
.ego-net-label:hover { fill: var(--blue-deep); text-decoration: underline; }
.ego-edge-line { cursor: help; }
.ego-edge-line:hover { opacity: 1 !important; }

/* ── Badges ───────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 9px;
  vertical-align: 1px;
}
.badge-agg { background: var(--amber-soft); color: var(--amber); }
.badge-consensus { background: var(--blue-soft); color: var(--blue-deep); }
.badge-majority { background: var(--line-soft); color: var(--muted); }
.badge-structural { background: var(--grey-cell); color: var(--muted); }
.badge-unvalidated { background: var(--red-soft); color: var(--red); }

/* ── Tables ───────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.data-table { border-collapse: collapse; width: 100%; font-size: 13px; background: var(--card); }
.data-table th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid var(--ink);
  padding: 8px 10px;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}
.data-table th .sort-mark { color: var(--blue); }
.data-table td { border-bottom: 1px solid var(--line-soft); padding: 7px 10px; vertical-align: top; }
.data-table td.mono { font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }
.data-table tr:hover td { background: #f5f7fb; }
.cell-label { color: var(--muted); font-size: 12px; display: block; max-width: 340px; }

/* ── Charts ───────────────────────────────────────────── */
.chart-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px 16px 10px;
  margin-bottom: 8px;
}
.chart { width: 100%; height: 340px; display: block; }
.chart-tall { height: 400px; }
.chart-legend {
  display: flex; gap: 18px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--muted);
  padding: 8px 4px 4px;
}
.chart-legend .key { display: inline-flex; align-items: center; gap: 6px; }
.key-line { display: inline-block; width: 22px; height: 0; border-top: 2.5px solid; }
.key-line.dashed { border-top-style: dashed; }
.key-band { display: inline-block; width: 22px; height: 11px; border-radius: 2px; }
.footnote { font-size: 12.5px; color: var(--muted); max-width: 720px; margin: 6px 0 0; }

.chip-row { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-family: var(--mono);
  font-size: 11.5px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--muted);
  border-radius: 12px;
  padding: 3px 10px;
  cursor: pointer;
}
.chip.on { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ── IRF heatmap ──────────────────────────────────────── */
.irf-wrap { overflow-x: auto; }
.irf-table { border-collapse: collapse; font-family: var(--mono); font-size: 10.5px; background: var(--card); }
.irf-table th { font-weight: 500; color: var(--muted); padding: 3px 6px; text-align: right; white-space: nowrap; }
.irf-table thead th { text-align: center; border-bottom: 1px solid var(--line); }
.irf-table td { width: 44px; height: 20px; text-align: center; border: 1px solid #fff; color: var(--ink); }

/* ── Validation block ─────────────────────────────────── */
.validation-block {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  border-radius: 6px;
  padding: 18px 22px;
}
.validation-block h3 { font-family: var(--serif); margin: 0 0 6px; font-size: 18px; color: var(--ink); }
.validation-note { font-size: 13px; color: var(--text); max-width: 720px; }
.validation-tables { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 14px; }
.validation-tables h4 { font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin: 0 0 6px; }
.validation-tables table { border-collapse: collapse; width: 100%; font-family: var(--mono); font-size: 12px; }
.validation-tables th, .validation-tables td { border-bottom: 1px solid var(--line-soft); padding: 5px 8px; text-align: right; }
.validation-tables th { color: var(--muted); font-weight: 500; }
.ratio-over { color: var(--red); font-weight: 600; }

/* ── Methods ──────────────────────────────────────────── */
.methods-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 18px;
}
.methods-card h3 { font-family: var(--serif); font-size: 18px; margin: 0 0 10px; color: var(--ink); }
.methods-card p { font-size: 13.5px; max-width: 760px; margin: 0 0 10px; }
.methods-card p:last-child { margin-bottom: 0; }
.methods-card ul { margin: 6px 0 0; padding-left: 20px; max-width: 760px; }
.methods-card li { font-size: 13.5px; margin-bottom: 7px; }
.methods-card .methods-kv { margin: 4px 0 12px; }
.methods-card .prov { margin: 10px 0; }
.methods-card em { color: var(--ink); font-style: italic; }
.methods-kv { display: grid; grid-template-columns: 200px 1fr; gap: 6px 18px; font-size: 13.5px; }
.methods-kv dt { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.methods-kv dd { margin: 0; }
.prov { font-family: var(--mono); font-size: 12.5px; background: var(--paper); border: 1px solid var(--line-soft); border-radius: 4px; padding: 10px 12px; white-space: pre-wrap; }

/* ── Footer ───────────────────────────────────────────── */
.site-foot {
  border-top: 1px solid var(--line);
  margin-top: 20px;
}
.site-foot p {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 32px 26px;
  font-size: 12.5px;
  color: var(--muted);
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 880px) {
  .frame { grid-template-columns: 1fr; }
  .rail {
    flex-direction: row;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 0;
    position: static;
  }
  .rail-link { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .rail-link.active { border-bottom-color: var(--blue); background: none; }
  .stage { padding: 24px 18px 48px; }
  .ego-cols, .validation-tables { grid-template-columns: 1fr; }
  .methods-kv { grid-template-columns: 1fr; }
  .masthead-inner { padding: 22px 18px 18px; }
  .brand-title { font-size: 24px; }
}

/* ── Tier-3 assistant drawer ──────────────────────────── */
#asst-launcher {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 600;
  color: #fff;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 22px;
  padding: 11px 18px;
  cursor: pointer;
  box-shadow: 0 3px 14px rgba(22,35,59,0.3);
}
#asst-launcher:hover { background: var(--blue-deep); }
/* Must outrank the UA rule [hidden]{display:none}: an ID selector setting
   display would otherwise keep the drawer visible when hidden is set. */
#asst-drawer[hidden] { display: none; }
#asst-drawer {
  position: fixed;
  right: 22px;
  bottom: 74px;
  z-index: 60;
  width: min(420px, calc(100vw - 44px));
  height: min(560px, calc(100vh - 120px));
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 8px 30px rgba(22,35,59,0.25);
  overflow: hidden;
}
.asst-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  color: #fff;
}
.asst-head strong { font-family: var(--serif); font-size: 15px; }
.asst-panel-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  margin-left: 8px;
  color: #93a3c4;
}
.asst-disclaimer {
  font-size: 11.5px;
  color: var(--muted);
  padding: 8px 14px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--paper);
}
.asst-log {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.asst-msg {
  font-size: 13px;
  line-height: 1.5;
  padding: 8px 12px;
  border-radius: 8px;
  max-width: 88%;
  white-space: pre-wrap;
}
.asst-user { align-self: flex-end; background: var(--blue-soft); color: var(--ink); }
.asst-assistant { align-self: flex-start; background: var(--line-soft); color: var(--text); }
.asst-wait { color: var(--muted); }
.asst-form {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
}
.asst-form textarea {
  flex: 1;
  font-family: var(--sans);
  font-size: 13px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  resize: none;
}
@media (max-width: 880px) {
  #asst-drawer { right: 10px; bottom: 66px; width: calc(100vw - 20px); }
  #asst-launcher { right: 10px; bottom: 14px; }
}

/* ── Glossary terms & Reader's guide ─────────────────── */
.term {
  border-bottom: 1px dotted var(--blue);
  cursor: help;
}
.guide-group h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 30px 0 6px;
}
.guide-entry {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 10px;
}
.guide-entry h4 {
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 6px;
}
.guide-entry p { margin: 0; font-size: 13.5px; max-width: 760px; }

.build-stamp {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--line);
}