/* The site map. Palette and type inherited from narrative/planning/substrate_viz so the
   artifact reads as part of the project. Fonts are system stacks: the page must run from
   file:// with no network. */

:root {
  --bg:          #f8f6f1;
  --fg:          #1c1a17;
  --fg-muted:    #6a6660;
  --fg-dim:      #a29d96;
  --border:      #d9d4c9;
  --border-soft: #e8e3d7;
  --panel:       #ffffff;
  --accent:      #2a5d8a;

  /* one colour per layer — colour encodes layer, never tier */
  --l-water:     #4d84b0;
  --l-terrain:   #9a8f7d;
  --l-landcover: #7fa06a;
  --l-arable:    #c98a3c;
  --l-points:    #8c5a86;
  --l-fauna:     #b0693f;
  --l-timber:    #4f7d5e;
  --l-health:    #b2504c;
  --l-travel:    #55707f;
  --l-campus:    #2a5d8a;
  --l-conflicts: #c0392b;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 36px rgba(0,0,0,0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
}

h1, h2, h3 {
  font-family: 'Fraunces', Georgia, 'Times New Roman', serif;
  font-weight: 500;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.muted { color: var(--fg-muted); }
code, .mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ------------------------------------------------------------- masthead */

.masthead {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 24px;
  padding: 28px 32px 12px; max-width: 1680px; margin: 0 auto;
}
.masthead h1 { font-size: 30px; margin-bottom: 2px; }
.subtitle { margin: 0; color: var(--fg-muted); }
.masthead-side { text-align: right; }
.build-meta { margin: 8px 0 0; font-size: 12px; color: var(--fg-dim); }

.scale-switch { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.scale-switch button {
  font: inherit; font-size: 13px; padding: 6px 14px; border: 0; cursor: pointer;
  background: var(--panel); color: var(--fg-muted);
}
.scale-switch button + button { border-left: 1px solid var(--border); }
.scale-switch button[aria-selected="true"] { background: var(--accent); color: #fff; }

.status-line {
  max-width: 1680px; margin: 0 auto; padding: 10px 32px 18px;
  color: var(--fg-muted); font-size: 13px; line-height: 1.5;
  border-bottom: 1px solid var(--border-soft);
}

/* ----------------------------------------------------------------- main */

main {
  display: grid; grid-template-columns: 300px minmax(0, 1fr) 380px; gap: 20px;
  max-width: 1680px; margin: 0 auto; padding: 20px 32px 8px; align-items: start;
}
.rail-left, .rail-right { position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow-y: auto; }
.rail-right { padding-bottom: 8px; }

.rail-title {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--fg-dim); font-family: inherit; font-weight: 600;
  margin: 18px 0 8px;
}
.rail-title:first-child { margin-top: 0; }

/* --------------------------------------------------------- layer control */

.layer-row {
  display: flex; align-items: flex-start; gap: 8px; padding: 5px 6px;
  border-radius: 5px; cursor: pointer; font-size: 13.5px;
}
.layer-row:hover { background: var(--border-soft); }
.layer-swatch {
  width: 11px; height: 11px; border-radius: 2px; flex: 0 0 auto; margin-top: 4px;
  background: var(--fg-dim); opacity: 0.3;
}
.layer-row[data-on="true"] .layer-swatch { opacity: 1; }
.layer-row[data-unlocated="true"] .layer-swatch {
  border-radius: 50%; background: transparent;
  border: 1.5px dashed currentColor; color: var(--fg-dim); opacity: 0.9;
}
.layer-row[data-on="true"][data-unlocated="true"] .layer-swatch { color: var(--l-conflicts); }
.layer-name { flex: 1; }
.layer-row[data-on="false"] .layer-name { color: var(--fg-muted); }
.layer-flag {
  font-size: 10.5px; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--l-conflicts); display: block; margin-top: 1px;
}

/* --------------------------------------------------------------- legends */

.tier-legend div, .class-legend div { margin-bottom: 7px; font-size: 12.5px; line-height: 1.4; }
.tier-tag {
  font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 10px;
  letter-spacing: 0.06em; text-transform: uppercase;
  border: 1px solid var(--border); border-radius: 3px; padding: 1px 5px;
  color: var(--fg-muted); background: var(--panel); white-space: nowrap;
}
.tier-tag[data-tier="DERIVED_HERE"] { border-style: dashed; }
.tier-tag[data-tier="NOT_ESTABLISHED"] { color: var(--l-conflicts); border-color: var(--l-conflicts); }
.tier-tag[data-tier="MEASURED"] { border-width: 2px; border-color: var(--fg); color: var(--fg); }
.tier-tag[data-tier="CHECKED"] { border-width: 2px; border-color: #2a7d4f; color: #2a7d4f; }

.class-key { display: inline-block; width: 30px; height: 12px; vertical-align: -2px; margin-right: 6px; }

/* ---------------------------------------------------------------- canvas */

.canvas-wrap { position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; }
.map-canvas { display: block; width: 100%; height: min(74vh, 860px); touch-action: none; cursor: grab; }
.map-canvas.dragging { cursor: grabbing; }

.canvas-overlay { position: absolute; left: 14px; bottom: 12px; pointer-events: none; }
.scale-bar { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--fg-muted); }
.scale-bar-line { display: block; height: 6px; border: 1px solid var(--fg-muted); border-top: 0; }
.origin-note { font-size: 11.5px; color: var(--fg-dim); margin-top: 4px; max-width: 380px; }
.skip-counter { font-size: 12px; color: var(--l-conflicts); margin-top: 4px; }

.time-control {
  position: absolute; right: 14px; bottom: 12px; background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; font-size: 12px;
  box-shadow: var(--shadow-sm);
}
.time-label { color: var(--fg-muted); display: block; margin-bottom: 5px; }
.time-steps { display: flex; gap: 4px; }
.time-steps button {
  font: inherit; font-size: 12px; padding: 3px 9px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel); border-radius: 4px; color: var(--fg-muted);
}
.time-steps button[aria-checked="true"] { background: var(--l-travel); border-color: var(--l-travel); color: #fff; }

/* geometry classes — the visual grammar */

.gc-mapped      { stroke-width: 1; }
.gc-derived     { stroke: none; }
.gc-derived.ray { stroke-width: 1.5; }
.gc-sector-band { stroke: none; }
.gc-schematic   { stroke-width: 1; stroke-dasharray: 4 3; }

.feature { cursor: pointer; }
/* labels must never intercept a click meant for the map underneath them */
.map-canvas text { pointer-events: none; }
.selected .halo { opacity: 1; }
.halo { opacity: 0; fill: none; stroke: var(--l-conflicts); stroke-width: 2.5; pointer-events: none; }

.frame-circle { fill: none; stroke: var(--border); stroke-width: 1; }
.ring-guide { fill: none; stroke: var(--border); stroke-width: 0.8; stroke-dasharray: 2 4; }
/* size is set inline in app.js, in plane units — never here */
.ring-label { fill: var(--fg-dim); }
.outer-band { fill: var(--border-soft); opacity: 0.55; }
.outer-band-label { fill: var(--fg-dim); font-style: italic; }
.point-label { fill: var(--fg); paint-order: stroke; stroke: var(--panel); stroke-width: 3.2px;
  stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.uncertainty { fill: none; stroke-dasharray: 3 3; stroke-width: 1; opacity: 0.75; }

/* ---------------------------------------------------------------- detail */

.detail-panel, .detail-placeholder {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px 18px; position: relative;
}
.detail-placeholder { color: var(--fg-muted); font-size: 13px; }
.detail-close {
  position: absolute; top: 8px; right: 10px; border: 0; background: none;
  font-size: 20px; line-height: 1; cursor: pointer; color: var(--fg-dim);
}
.detail-body h3 { font-size: 17px; margin-right: 20px; }
.detail-layer { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-dim); }
.detail-body p { margin: 0 0 10px; font-size: 13.5px; }
.value-line { display: block; margin-bottom: 10px; }
.value-line .tier-tag { display: inline-block; margin: 0 0 4px; }
.detail-section-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--fg-dim); margin: 14px 0 6px; font-weight: 600;
}
.derivation, .uncertainty-note {
  font-size: 12.5px; color: var(--fg-muted); background: var(--bg);
  border-left: 2px solid var(--border); padding: 7px 10px; margin: 0 0 10px;
}
.ne-list { margin: 0 0 10px; padding-left: 18px; font-size: 12.5px; color: var(--fg-muted); }
.ne-list li { margin-bottom: 4px; }

.provenance { border-top: 1px solid var(--border-soft); margin-top: 14px; padding-top: 10px; }
.prov-row { display: flex; gap: 8px; font-size: 12px; margin-bottom: 4px; }
.prov-key { color: var(--fg-dim); flex: 0 0 88px; }
.prov-val { color: var(--fg); flex: 1; word-break: break-word; }
.prov-val.warn { color: var(--l-conflicts); }
.prov-val.good { color: var(--l-timber); }

.detail-table { width: 100%; border-collapse: collapse; font-size: 12px; margin-bottom: 10px; }
.detail-table th, .detail-table td { text-align: right; padding: 2px 6px; border-bottom: 1px solid var(--border-soft); }
.detail-table th:first-child, .detail-table td:first-child { text-align: left; }
.detail-table th { color: var(--fg-dim); font-weight: 600; }

/* ------------------------------------------------------------- registers */

.registers { padding: 0; }
.panel-tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 10px; }
.panel-tabs button {
  font: inherit; font-size: 12.5px; padding: 6px 10px; border: 0; background: none;
  cursor: pointer; color: var(--fg-muted); border-bottom: 2px solid transparent; white-space: nowrap;
}
.panel-tabs button[aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); }
.panel-page.registers .area-axis { display: none; }
.panel-page.registers .area-row { grid-template-columns: minmax(0,1fr); gap: 2px; font-size: 12px; padding: 4px 0; border-bottom: 1px solid var(--border-soft); }
.panel-page.registers .area-value { text-align: left; }
.panel-page.registers .register-note { font-size: 12px; }
.panel-page.registers .conflict-head { padding: 9px 11px; font-size: 13px; flex-wrap: wrap; }
.panel-page.registers .conflict-body { padding: 0 11px 11px; }
.panel-page.registers .side { font-size: 12.5px; }
.register-note { font-size: 13px; color: var(--fg-muted); max-width: 78ch; margin: 0 0 16px; }

/* area register */
.area-axis {
  position: relative; height: 22px; border-bottom: 1px solid var(--border);
  margin-bottom: 4px; font-size: 11px; color: var(--fg-dim);
}
.area-axis span { position: absolute; bottom: 3px; transform: translateX(-50%); white-space: nowrap; }
.area-row { display: grid; grid-template-columns: 300px minmax(0,1fr) 130px; gap: 10px; align-items: center; font-size: 12.5px; padding: 2px 0; }
.area-row.nested .area-label { padding-left: 18px; color: var(--fg-muted); }
.area-row.outside .area-label { color: var(--fg-dim); font-style: italic; }
.area-track { position: relative; height: 13px; background: var(--border-soft); border-radius: 2px; }
.area-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 2px; opacity: 0.85; }
.area-range { position: absolute; top: 4px; height: 5px; border-left: 1px solid var(--fg-dim); border-right: 1px solid var(--fg-dim); }
.area-value { text-align: right; color: var(--fg-muted); font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 11.5px; }
.area-gap {
  margin: 10px 0 20px; padding: 10px 12px; border: 1px dashed var(--l-conflicts);
  border-radius: 5px; font-size: 13px; color: var(--l-conflicts); background: #fff8f7;
}
.area-group-title { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-dim); margin: 18px 0 6px; font-weight: 600; }

/* conflicts */
.conflict { border: 1px solid var(--border); border-radius: 7px; margin-bottom: 12px; background: var(--panel); }
.conflict-head { display: flex; gap: 10px; align-items: baseline; padding: 11px 14px; cursor: pointer; }
.conflict-id { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px; color: var(--fg-dim); }
.conflict-title { font-weight: 500; flex: 1; }
.conflict-status { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-dim); }
.conflict-status[data-status="reopened"] { color: var(--l-arable); }
.conflict-status[data-status="ruled"] { color: var(--l-timber); }
.conflict-found { font-size: 11px; color: var(--l-conflicts); }
.conflict-body { padding: 0 14px 14px; display: none; }
.conflict.open .conflict-body { display: block; }
.sides { display: grid; gap: 10px; margin-bottom: 12px; }
.side { border-left: 3px solid var(--border); padding: 6px 0 6px 11px; font-size: 13px; }
.side-value { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 12px; color: var(--accent); display: block; margin-bottom: 3px; }
.side-src { font-size: 11.5px; color: var(--fg-dim); margin-top: 4px; }
.scales-off { font-size: 12.5px; color: var(--fg-muted); }
.scales-off ul { margin: 4px 0 0; padding-left: 18px; }
.refused { font-size: 12.5px; color: var(--fg-muted); margin-top: 10px; border-top: 1px solid var(--border-soft); padding-top: 8px; }

/* not established */
.ne-entry { border-bottom: 1px solid var(--border-soft); padding: 11px 0; }
.ne-entry h3 { font-size: 14.5px; margin-bottom: 3px; }
.ne-entry p { margin: 0 0 5px; font-size: 13px; color: var(--fg-muted); }
.ne-close { font-size: 12.5px; color: var(--fg); }
.ne-close b { font-weight: 600; color: var(--fg-dim); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }

.colophon {
  max-width: 1680px; margin: 0 auto; padding: 0 32px 60px;
  font-size: 12.5px; color: var(--fg-dim); max-width: 90ch;
}
.colophon a { color: var(--fg-muted); }

/* ------------------------------------------------------------ responsive */

@media (max-width: 1180px) {
  main { grid-template-columns: 230px minmax(0,1fr); }
  .rail-right { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .masthead { flex-direction: column; align-items: flex-start; gap: 12px; padding: 20px 18px 8px; }
  .masthead-side { text-align: left; }
  .status-line, main, .registers, .colophon { padding-left: 18px; padding-right: 18px; }
  main { grid-template-columns: minmax(0,1fr); }
  .rail-left { order: 2; }
  .stage { order: 1; }
  .rail-right { order: 3; }
  .map-canvas { height: 62vh; }
  .area-row { grid-template-columns: minmax(0,1fr); gap: 2px; }
  .area-value { text-align: left; }
}

/* Unlocated features — what a layer says that has no location. These carry the tables
   and the constraints; before this list existed there was no route to them at all. */
.unlocated-list { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 12px; }
.unlocated-entry {
  display: inline-flex; align-items: center; gap: 7px;
  font: inherit; font-size: 12.5px; text-align: left; cursor: pointer;
  background: var(--panel); border: 1px solid var(--border); border-radius: 5px;
  padding: 5px 10px 5px 7px; color: var(--fg);
}
.unlocated-entry:hover { border-color: var(--accent); background: #fff; }
.unlocated-label { font-weight: 500; }
.unlocated-flag {
  font-size: 10.5px; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--fg-dim); border-left: 1px solid var(--border-soft); padding-left: 7px;
}
.area-row.flagged { background: #fff6f4; outline: 1px solid var(--l-conflicts); border-radius: 3px; }

/* Conflict participants. A side names what it rests on, so it is never silently empty
   when its evidence lives on the other tab or the other scale. */
.side-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px; }
.side-chip {
  font: inherit; font-size: 11.5px; cursor: pointer; text-align: left;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
  padding: 3px 8px; color: var(--fg);
}
.side-chip:hover { border-color: var(--accent); }
.side-chip-where {
  display: block; font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--fg-dim);
}
.feature.lit path, .feature.lit circle, .feature.lit ellipse, .feature.lit line {
  stroke: var(--l-conflicts);
}

/* What else was under the pointer. Z-order has to pick one winner, and on an overlay map
   the loser is often the thing the reader was aiming at. */
.also-here {
  display: flex; flex-wrap: wrap; gap: 5px; align-items: center;
  margin: 0 0 12px; padding-bottom: 10px; border-bottom: 1px solid var(--border-soft);
}
.also-here-label {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--fg-dim); width: 100%;
}
.also-chip {
  font: inherit; font-size: 12px; text-align: left; cursor: pointer;
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
  padding: 3px 8px; color: var(--fg);
}
.also-chip:hover { border-color: var(--accent); }
.also-chip-layer {
  display: block; font-size: 10px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--fg-dim);
}


/* ------------------------------------------------------------ topic index */

.topic { border: 1px solid var(--border); border-radius: 7px; background: var(--panel); margin-bottom: 8px; }
.topic-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px; width: 100%;
  font: inherit; font-family: 'Fraunces', Georgia, serif; font-size: 16px; text-align: left;
  padding: 10px 13px; border: 0; background: none; cursor: pointer; color: var(--fg);
}
.topic.open .topic-head { border-bottom: 1px solid var(--border-soft); }
.topic-count { font-family: 'Inter', sans-serif; font-size: 11px; color: var(--fg-dim); white-space: nowrap; }
.topic-lede { font-size: 12.5px; color: var(--fg-muted); margin: 8px 13px 6px; line-height: 1.45; }
.topic-entries { display: flex; flex-direction: column; padding: 2px 6px 8px; }
.topic-entry {
  display: grid; grid-template-columns: 10px minmax(0,1fr); column-gap: 8px; align-items: start;
  font: inherit; font-size: 13px; text-align: left; padding: 5px 7px; border: 0; border-radius: 5px;
  background: none; cursor: pointer; color: var(--fg); line-height: 1.35;
}
.topic-entry:hover { background: var(--border-soft); }
.topic-entry.current { background: #eef3f8; }
.topic-dot { width: 9px; height: 9px; border-radius: 2px; margin-top: 5px; }
.topic-dot.nodot { border: 1.5px dashed var(--fg-dim); background: transparent; }
.topic-entry-meta { grid-column: 2; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--fg-dim); margin-top: 1px; }
.topic-conflicts { padding: 4px 13px 12px; border-top: 1px solid var(--border-soft); }
.topic-conflicts-label { display: block; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--l-conflicts); margin: 6px 0 4px; }
.topic-conflict {
  display: block; width: 100%; font: inherit; font-size: 12.5px; text-align: left; padding: 4px 0;
  border: 0; background: none; cursor: pointer; color: var(--fg); line-height: 1.35;
}
.topic-conflict:hover { color: var(--accent); }
.topic-all {
  width: 100%; margin-top: 6px; font: inherit; font-size: 12.5px; text-align: left; padding: 8px 13px;
  border: 1px dashed var(--border); border-radius: 7px; background: none; cursor: pointer; color: var(--fg-muted);
}
.topic-all:hover { color: var(--fg); border-color: var(--fg-dim); }

/* base-map toggles over the canvas */
.base-toggles { position: absolute; left: 14px; top: 12px; display: flex; gap: 6px; z-index: 2; }
.base-toggles button {
  font: inherit; font-size: 12px; padding: 4px 10px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel); border-radius: 4px; color: var(--fg-muted);
  box-shadow: var(--shadow-sm);
}
.base-toggles button[aria-pressed="true"] { background: var(--l-water); border-color: var(--l-water); color: #fff; }

/* the mechanics, folded away */
.howto { max-width: 1680px; margin: 0 auto; padding: 0 32px 40px; }
.howto summary { cursor: pointer; font-size: 13px; color: var(--fg-muted); padding: 10px 0; border-top: 1px solid var(--border-soft); }
.howto-body { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; padding-top: 10px; }
.howto-body .colophon { grid-column: 1 / -1; padding: 0; }

@media (max-width: 1180px) {
  main { grid-template-columns: 280px minmax(0,1fr); }
  .rail-right { grid-column: 1 / -1; position: static; max-height: none; }
}
@media (max-width: 900px) {
  .rail-left { position: static; max-height: none; }
  .howto { padding-left: 18px; padding-right: 18px; }
}

/* embedded in the reading page: the map alone, with its panel; no masthead, index or fold */
.embed .masthead, .embed .status-line, .embed .rail-left, .embed .howto { display: none; }
.embed body, .embed main { margin: 0; }
.embed main { grid-template-columns: minmax(0,1fr) 340px; padding: 6px; gap: 10px; }
.embed .map-canvas { height: calc(100vh - 14px); }
.embed .rail-right { max-height: calc(100vh - 14px); top: 0; }
.embed .detail-placeholder .muted { display: none; }