/* LiDAR Trail Audit — shared styling for both pages. */

:root {
  color-scheme: light;
  --plane:      #eceee9;
  --surface:    #f9faf7;
  --surface-2:  #f2f4ef;
  --ink:        #101410;
  --ink-2:      #4d534a;
  --ink-3:      #7f857a;
  --grid:       #dfe2da;
  --rule:       #c8ccc0;
  --hairline:   rgba(16,20,16,0.10);
  --accent:     #1c5cab;
  --critical:   #b3302f;
  /* grade ramp — the real NZ MTB trail-marker colours (grader.py GRADES),
     not an accent ramp: green 1/2, blue 3/4, black 5, double-black 6 */
  --g1: #00b300; --g2: #66cc00; --g3: #00aaff;
  --g4: #0044cc; --g5: #444444; --g6: #660000;
  --grade-ink: #f9faf7;

  --font-display: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --plane:      #0b0d0a;
    --surface:    #161915;
    --surface-2:  #1d211b;
    --ink:        #f0f2ec;
    --ink-2:      #b3b9ac;
    --ink-3:      #82887c;
    --grid:       #272b23;
    --rule:       #363b31;
    --hairline:   rgba(240,242,236,0.12);
    --accent:     #7fb0f0;
    --critical:   #e07a79;
    /* same NZ MTB colours, lightened just enough to hold on a near-black ground */
    --g1: #2ed13f; --g2: #a3e635; --g3: #38bdf8;
    --g4: #4d7bea; --g5: #a1a1aa; --g6: #f16b6b;
    --grade-ink: #0b0d0a;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --plane:      #0b0d0a;
  --surface:    #161915;
  --surface-2:  #1d211b;
  --ink:        #f0f2ec;
  --ink-2:      #b3b9ac;
  --ink-3:      #82887c;
  --grid:       #272b23;
  --rule:       #363b31;
  --hairline:   rgba(240,242,236,0.12);
  --accent:     #7fb0f0;
  --critical:   #e07a79;
  --g1: #2ed13f; --g2: #a3e635; --g3: #38bdf8;
  --g4: #4d7bea; --g5: #a1a1aa; --g6: #f16b6b;
  --grade-ink: #0b0d0a;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--plane);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

.sheet { max-width: 1100px; margin: 0 auto; padding: 0 20px 60px; }
.sheet.wide { max-width: 1320px; }

/* ---------- title block ---------- */

.titleblock { border-bottom: 1px solid var(--rule); padding: 28px 0 20px; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--ink-3);
  margin: 0 0 10px;
  display: flex;
  gap: 14px;
  align-items: baseline;
  flex-wrap: wrap;
}
.eyebrow a { color: var(--accent); text-decoration: none; }
.eyebrow a:hover { text-decoration: underline; }

.titleblock h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
}

.subtitle { font-size: 15px; color: var(--ink-2); margin: 0 0 20px; max-width: 62ch; }

.fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin: 0;
}
.field { padding: 10px 16px 10px 0; }
.field dt {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--ink-3); margin-bottom: 3px;
}
.field dd { margin: 0; font-size: 14px; }

/* ---------- sections ---------- */

section { margin-top: 40px; }

.sec-head {
  display: flex; align-items: baseline; gap: 16px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px; margin-bottom: 20px;
}
.sec-head h2 {
  font-family: var(--font-display);
  font-weight: 600; font-size: 19px;
  margin: 0;
}
.sec-head .note { font-size: 13px; color: var(--ink-3); margin-left: auto; text-align: right; }

.card {
  background: var(--surface);
  border-radius: 8px;
  padding: 20px 22px;
}
.card > h3 {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink); font-weight: 600; margin: 0 0 4px;
}
.card > .card-sub { font-size: 13px; color: var(--ink-2); margin: 0 0 16px; max-width: 68ch; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }

/* ---------- verdict ---------- */

.verdict {
  display: grid;
  grid-template-columns: minmax(180px, 220px) 1fr;
  border-radius: 8px;
  background: var(--surface);
  margin-top: 28px;
  overflow: hidden;
}
.verdict-badge {
  background: var(--surface-2);
  border-left: 4px solid var(--vg, var(--g3));
  padding: 20px 22px;
  display: flex; flex-direction: column; justify-content: center;
}
.verdict-badge .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
}
.verdict-badge .num {
  font-family: var(--font-display);
  font-size: 44px; line-height: 1; font-weight: 600;
  margin: 6px 0 2px; color: var(--vg, var(--g3));
}
.verdict-badge .nm { font-size: 15px; font-weight: 600; }
.verdict-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 12px; }
.verdict-body p { margin: 0; max-width: 66ch; color: var(--ink-2); }
.verdict-body strong { color: var(--ink); font-weight: 600; }

.checkrow {
  display: flex; flex-wrap: wrap; gap: 10px 20px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-2);
  padding-top: 12px; border-top: 1px solid var(--grid);
}
.checkrow span::before { content: "✓ "; color: var(--accent); font-weight: 700; }
.checkrow span.fail::before { content: "! "; color: var(--critical); }

/* ---------- stat tiles ---------- */

.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 10px;
  margin: 20px 0 0;
}
.stat { background: var(--surface); border-radius: 8px; padding: 14px 16px; }
.stat dt {
  font-family: var(--font-body); font-size: 12px;
  color: var(--ink-3); margin-bottom: 6px;
}
.stat dd { margin: 0; font-size: 24px; line-height: 1.1; font-weight: 600; }
.stat dd .u { font-size: 14px; font-weight: 400; color: var(--ink-2); margin-left: 2px; }
.stat .sub { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); margin-top: 5px; }

/* ---------- forms ---------- */

.formgrid { display: grid; gap: 18px; }

.fieldrow { display: grid; gap: 6px; }
.fieldrow > label, .legendlabel {
  font-family: var(--font-body);
  font-size: 12.5px;
  color: var(--ink-2); font-weight: 600;
}
.fieldrow .hint { font-size: 12.5px; color: var(--ink-3); }

input[type="text"], input[type="number"], select, input[type="file"] {
  font-family: var(--font-body);
  font-size: 14px;
  padding: 9px 11px;
  background: var(--plane);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 6px;
  width: 100%;
}
input[type="number"] { font-variant-numeric: tabular-nums; }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

fieldset { border: 1px solid var(--grid); border-radius: 6px; padding: 14px 16px 16px; margin: 0; }
legend { padding: 0 6px; }

.choice { display: flex; flex-direction: column; gap: 2px; }
.choice label {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 8px 10px; cursor: pointer; font-size: 14px;
  border: 1px solid transparent; border-radius: 6px;
}
.choice label:hover { background: var(--surface-2); }
.choice label:has(input:checked) { background: var(--surface-2); border-color: var(--rule); }
.choice input { margin-top: 4px; accent-color: var(--accent); }
.choice .t { display: flex; flex-direction: column; }
.choice .t small { color: var(--ink-3); font-size: 12px; }

.pairs { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }

button.primary {
  font-family: var(--font-body);
  font-size: 15px; font-weight: 600;
  padding: 12px 24px;
  background: var(--accent);
  color: var(--surface);
  border: 0; border-radius: 6px; cursor: pointer;
}
:root[data-theme="dark"] button.primary,
:root:not([data-theme="light"]) button.primary { color: var(--plane); }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) button.primary { color: #fff; }
}
button.primary:hover { filter: brightness(1.08); }
button.primary:disabled { opacity: 0.55; cursor: progress; }

button.ghost {
  font-family: var(--font-body); font-size: 13px;
  padding: 8px 14px; cursor: pointer;
  background: var(--surface); color: var(--ink-2);
  border: 1px solid var(--rule); border-radius: 6px;
}
button.ghost:hover { background: var(--surface-2); color: var(--ink); }
button.ghost[aria-pressed="true"] {
  background: var(--accent); color: var(--surface); border-color: var(--accent);
}

.errorbox {
  border: 1px solid var(--critical);
  border-left-width: 4px;
  border-radius: 6px;
  background: var(--surface);
  padding: 14px 18px;
  margin: 20px 0 0;
  font-size: 14px;
}
.errorbox b { display: block; margin-bottom: 3px; }

/* ---------- tables ---------- */

.spec { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec th, .spec td {
  text-align: left; padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--grid); vertical-align: top;
}
.spec th {
  font-family: var(--font-body); font-size: 12.5px;
  color: var(--ink-3); font-weight: 600;
  white-space: nowrap; width: 42%;
}
.spec .hint { display: block; color: var(--ink-3); font-size: 12px; margin-top: 2px; }
code, .mono { font-family: var(--font-mono); font-size: 12.5px; }

.thresh { width: 100%; border-collapse: collapse; font-size: 13px; }
.thresh th, .thresh td {
  padding: 8px 10px; border-bottom: 1px solid var(--grid);
  text-align: right; font-variant-numeric: tabular-nums;
}
.thresh th:first-child, .thresh td:first-child { text-align: left; }
.thresh thead th {
  font-family: var(--font-body); font-size: 12.5px;
  color: var(--ink-3); font-weight: 600;
  border-bottom: 1px solid var(--rule);
}
.thresh tbody tr.hit { background: var(--surface-2); }
.thresh tbody tr.hit td:first-child { font-weight: 600; }

.swatch {
  display: inline-block; width: 10px; height: 10px;
  margin-right: 8px; border-radius: 2px; vertical-align: baseline;
}

.flags { width: 100%; border-collapse: collapse; font-size: 13px; }
.flags th, .flags td {
  padding: 9px 12px 9px 0; border-bottom: 1px solid var(--grid);
  text-align: left; font-variant-numeric: tabular-nums;
}
.flags thead th {
  font-family: var(--font-body); font-size: 12.5px;
  color: var(--ink-3); font-weight: 600;
  border-bottom: 1px solid var(--rule);
}
.pill {
  display: inline-block; padding: 1px 8px; border-radius: 4px;
  font-size: 11px; font-weight: 600; color: var(--grade-ink);
}
.cause { color: var(--ink-2); }

/* ---------- charts ---------- */

.chart-scroll { overflow-x: auto; position: relative; }
.chart-scroll svg { display: block; min-width: 700px; width: 100%; height: auto; }
#plan-scroll svg { min-width: 540px; }

.tick { font-family: var(--font-mono); font-size: 10px; fill: var(--ink-3); }
.axlabel {
  font-family: var(--font-body); font-size: 11px; fill: var(--ink-3);
}
.gridline { stroke: var(--grid); stroke-width: 1; }
.baseline { stroke: var(--rule); stroke-width: 1; }
.marklabel { font-family: var(--font-body); font-size: 11px; fill: var(--ink-2); }

.legend {
  display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: 16px;
  font-size: 12.5px; color: var(--ink-2); align-items: center;
}
.legend .key { display: inline-flex; align-items: center; gap: 7px; }
.legend .key i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }
.legend .key .n {
  font-variant-numeric: tabular-nums; color: var(--ink-3);
  font-family: var(--font-mono); font-size: 11px;
}

.tip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.13);
  padding: 9px 12px; font-size: 12px; line-height: 1.5; min-width: 150px;
  opacity: 0; transition: opacity 0.1s;
}
.tip.on { opacity: 1; }
.tip .th {
  font-family: var(--font-body); font-size: 11px;
  color: var(--ink-3); margin-bottom: 5px;
}
.tip .row { display: flex; justify-content: space-between; gap: 20px; }
.tip .row b { font-weight: 600; font-variant-numeric: tabular-nums; }
.tip .gpill {
  display: inline-block; margin-top: 6px; padding: 1px 8px;
  font-size: 11px; font-weight: 600; border-radius: 4px; color: var(--grade-ink);
}

.dist { display: flex; flex-direction: column; gap: 2px; }
.dist-row {
  display: grid; grid-template-columns: 132px 1fr 96px;
  align-items: center; gap: 14px; padding: 5px 0;
}
.dist-row .nm { font-size: 13px; display: flex; align-items: center; }
.dist-track { height: 14px; border-radius: 3px; background: var(--surface-2); }
.dist-fill { height: 100%; border-radius: 3px; }
.dist-row .val {
  font-family: var(--font-mono); font-size: 12px; text-align: right;
  font-variant-numeric: tabular-nums; color: var(--ink-2);
}

/* ---------- table view ---------- */

details.tableview { margin-top: 18px; border-top: 1px solid var(--grid); padding-top: 12px; }
details.tableview summary {
  cursor: pointer; font-family: var(--font-body); font-size: 13px;
  color: var(--ink-2); list-style: none;
}
details.tableview summary::-webkit-details-marker { display: none; }
details.tableview summary::before { content: "▸ "; color: var(--ink-3); }
details.tableview[open] summary::before { content: "▾ "; }
.tablewrap { max-height: 340px; overflow: auto; margin-top: 12px; border: 1px solid var(--grid); border-radius: 6px; }
.tablewrap table { width: 100%; border-collapse: collapse; font-size: 12px; font-family: var(--font-mono); }
.tablewrap th, .tablewrap td {
  padding: 5px 10px; text-align: right; font-variant-numeric: tabular-nums;
  border-bottom: 1px solid var(--grid); white-space: nowrap;
}
.tablewrap th {
  position: sticky; top: 0; background: var(--surface); z-index: 1;
  font-size: 11px; color: var(--ink-3);
}

/* ---------- 3d ---------- */

.viewer {
  position: relative;
  background: var(--surface);
  border-radius: 8px;
  overflow: hidden;
}
.viewer-bar {
  display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--grid);
}
.viewer-bar .grouplabel {
  font-family: var(--font-body); font-size: 12.5px;
  color: var(--ink-3);
}
.btnset { display: flex; gap: 6px; }
.plot3d { width: 100%; height: 620px; }
.plot3d.short { height: 460px; }

.slider { display: flex; align-items: center; gap: 8px; }
.slider input[type="range"] { width: 110px; accent-color: var(--accent); }
.slider output { font-family: var(--font-mono); font-size: 11px; color: var(--ink-2); min-width: 26px; }

.scalebar { display: flex; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 11px; color: var(--ink-2); }
.scaleramp { display: flex; height: 12px; width: 150px; border-radius: 3px; overflow: hidden; }
.scaleramp i { flex: 1; }

/* ---------- misc ---------- */

.manifest { width: 100%; border-collapse: collapse; font-size: 13px; }
.manifest td { padding: 8px 14px 8px 0; border-bottom: 1px solid var(--grid); vertical-align: top; }
.manifest td:first-child { font-family: var(--font-mono); font-size: 12px; white-space: nowrap; }
.manifest td:last-child { color: var(--ink-2); }

footer {
  margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--rule);
  font-size: 12.5px; color: var(--ink-3);
  display: flex; flex-wrap: wrap; gap: 8px 28px;
}
footer .mono { font-size: 11.5px; }

a { color: var(--accent); }

.working {
  display: none; align-items: center; gap: 12px;
  font-family: var(--font-body); font-size: 12.5px; color: var(--ink-2);
}
.working.on { display: flex; }
.spinner {
  width: 14px; height: 14px; border: 2px solid var(--rule);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .spinner { border-top-color: var(--rule); }
}

@media (max-width: 620px) {
  .verdict { grid-template-columns: 1fr; }
  .verdict-badge { border-left: 0; border-top: 4px solid var(--vg, var(--g3)); }
  .dist-row { grid-template-columns: 106px 1fr 80px; gap: 10px; }
  .plot3d { height: 420px; }
}