/* ============================================================================
   Racing Line Lab — styles on top of /shared.css
   Same design system as the rest of apexlines.app: ink surfaces, racing red,
   amber for apexes/highlights, Space Grotesk voice, JetBrains Mono readouts.
   ========================================================================== */

/* breadcrumbs (same recipe as /guides/) ---------------------------------- */
.crumbs {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-faint);
  padding-top: 22px;
}
.crumbs a { color: var(--ink-muted); }
.crumbs a:hover { color: var(--red); }
.crumbs .sep { color: var(--ink-faint); margin: 0 2px; }

/* top strip ---------------------------------------------------------------- */
.lab-top { padding: clamp(20px, 3.5vw, 38px) 0 10px; }
.lab-top h1 {
  font-size: clamp(26px, 3.8vw, 42px); font-weight: 700;
  letter-spacing: -0.025em; line-height: 1.05; margin: 12px 0 6px;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.lab-top .track-meta {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-muted);
}
.lab-top .track-meta a { color: var(--red); }
.lab-top .track-meta a:hover { text-decoration: underline; text-decoration-color: var(--red-line); }
.badge-free, .badge-locked {
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 999px; vertical-align: middle;
}
.badge-free { background: var(--amber-soft); color: var(--amber); border: 1px solid rgba(255,199,41,0.35); }
.badge-locked { background: var(--surface-2); color: var(--ink-muted); border: 1px solid var(--line); }

.provenance-line {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.05em;
  color: var(--ink-faint); margin-top: 6px;
}
.provenance-line a { color: var(--red); text-decoration: underline; text-decoration-color: var(--red-line); }

/* app grid ------------------------------------------------------------------ */
.lab-app { padding: 18px 0 30px; }
.lab-grid {
  display: grid; grid-template-columns: 320px minmax(0, 1fr);
  gap: 22px; align-items: start;
}

/* parameter panel ------------------------------------------------------------ */
.param-panel {
  background: linear-gradient(180deg, var(--surface) 0%, #101216 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 20px 22px;
  position: sticky; top: 78px;
}
.param-panel .panel-head {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint);
  padding-bottom: 12px; margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}
.param-panel .panel-head .live { color: var(--red); display: inline-flex; align-items: center; gap: 7px; }
.param-panel .panel-head .live::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--red);
}
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
fieldset:disabled { opacity: 0.45; }
.param-label {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin: 18px 0 9px;
  display: flex; justify-content: space-between; align-items: baseline;
}
.param-label .val { color: var(--ink); font-size: 12.5px; font-weight: 700; font-variant-numeric: tabular-nums; }

.preset-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.preset-chips button, .grip-chips label {
  font-family: var(--font-mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: 0.04em; cursor: pointer;
  padding: 8px 13px; border-radius: 999px;
  border: 1px solid var(--line); background: transparent; color: var(--ink-muted);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.preset-chips button:hover, .grip-chips label:hover { border-color: var(--red-line); color: var(--red); }
.preset-chips button[aria-pressed="true"] {
  background: var(--red-soft); border-color: var(--red); color: var(--red); font-weight: 700;
}
.grip-chips { display: flex; gap: 8px; }
.grip-chips input { position: absolute; opacity: 0; pointer-events: none; }
.grip-chips label { display: inline-block; }
.grip-chips input:checked + label {
  background: var(--red-soft); border-color: var(--red); color: var(--red); font-weight: 700;
}
.grip-chips input:focus-visible + label { outline: 2px solid var(--red); outline-offset: 2px; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 26px;
  background: transparent; cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px; background: var(--surface-2);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; margin-top: -7px; border-radius: 50%;
  background: var(--red); border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--red-line);
}
input[type="range"]::-moz-range-track { height: 4px; border-radius: 2px; background: var(--surface-2); }
input[type="range"]::-moz-range-thumb {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--red); border: 3px solid var(--bg);
  box-shadow: 0 0 0 1px var(--red-line);
}
.param-fine {
  margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.04em;
  color: var(--ink-faint); line-height: 1.6;
}
.param-fine a { color: var(--red); }

/* unlock panel ---------------------------------------------------------------- */
.unlock-panel {
  margin-top: 18px;
  background: linear-gradient(160deg, rgba(255,199,41,0.08), var(--surface) 55%);
  border: 1px solid rgba(255,199,41,0.35);
  border-radius: var(--radius);
  padding: 18px;
}
.unlock-panel h3 { font-size: 16px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 6px; }
.unlock-panel .price { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--amber); }
.unlock-panel .price .unit { font-size: 12px; color: var(--ink-muted); font-family: var(--font-display); font-weight: 500; }
.unlock-panel p { font-size: 13px; color: var(--ink-muted); margin: 8px 0 14px; }
.unlock-panel .btn-primary { width: 100%; justify-content: center; border: 0; cursor: pointer; font-family: var(--font-display); padding: 12px 18px; font-size: 14.5px; }
.unlock-panel .btn-primary:disabled { opacity: 0.55; cursor: wait; transform: none; box-shadow: none; }
.unlock-panel .restore {
  display: block; margin-top: 10px; text-align: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em;
  color: var(--ink-muted); text-decoration: underline; text-decoration-color: var(--line);
}
.unlock-panel .restore:hover { color: var(--amber); }
.pay-msg { font-size: 13px; color: var(--ink-muted); margin-top: 10px; min-height: 18px; }
.pay-msg.err { color: var(--red); }
.waitlist { display: none; margin-top: 12px; }
.waitlist.show { display: block; }
.waitlist p { font-size: 12.5px; color: var(--ink-muted); margin-bottom: 8px; }
.waitlist form { display: flex; gap: 8px; flex-wrap: wrap; }
.waitlist input[type="email"] {
  flex: 1; min-width: 150px;
  background: var(--bg); color: var(--ink);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 10px 14px; font-size: 13.5px; font-family: var(--font-display);
}
.waitlist button {
  background: var(--amber); color: #171A1F; border: 0; cursor: pointer;
  font-weight: 700; font-size: 13px; font-family: var(--font-display);
  padding: 10px 16px; border-radius: 999px;
}

/* results column ---------------------------------------------------------------- */
.lab-main { min-width: 0; }
.readout {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; margin-bottom: 14px;
}
.readout .lap {
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: clamp(44px, 6vw, 64px); font-weight: 700; line-height: 0.95;
  letter-spacing: -0.02em;
}
.readout .lap .k {
  display: block;
  font-size: 10.5px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 8px;
}
.readout .delta {
  font-family: var(--font-mono); font-size: 15px; font-weight: 700;
  padding: 6px 13px; border-radius: 999px; align-self: center;
}
.readout .delta.faster { background: var(--amber-soft); color: var(--amber); border: 1px solid rgba(255,199,41,0.3); }
.readout .delta.slower { background: var(--red-soft); color: var(--red); border: 1px solid var(--red-line); }
.readout .delta.even { background: var(--surface-2); color: var(--ink-muted); border: 1px solid var(--line); }
.readout-stats { display: flex; gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); overflow: hidden; }
.readout-stats .stat { background: var(--surface); padding: 10px 16px; text-align: center; min-width: 86px; }
.readout-stats .stat .n { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 17px; font-weight: 700; }
.readout-stats .stat .n .unit { font-size: 10.5px; color: var(--ink-faint); }
.readout-stats .stat .k {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin-top: 3px;
}

/* reference laps (locked tracks) */
.ref-laps { margin-bottom: 14px; }
.ref-laps .k {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: 10px;
}
.ref-laps ul { list-style: none; display: flex; gap: 1px; flex-wrap: wrap; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); overflow: hidden; }
.ref-laps li { background: var(--surface); padding: 12px 18px; flex: 1; min-width: 130px; }
.ref-laps li .t { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 22px; font-weight: 700; }
.ref-laps li .c {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint); margin-top: 3px;
}

/* canvas ------------------------------------------------------------------------- */
.canvas-panel {
  background: linear-gradient(180deg, var(--surface) 0%, #101216 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: 0 30px 70px rgba(0,0,0,0.45);
}
#lab-canvas { display: block; width: 100%; height: auto; touch-action: pan-y; }
.canvas-attr {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-faint);
  margin-top: 10px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.hover-readout { color: var(--ink-muted); min-height: 13px; }

/* actions --------------------------------------------------------------------- */
.lab-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0 8px; }
.lab-actions button, .lab-actions a.act {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: 0.04em;
  color: var(--ink); background: transparent; cursor: pointer;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 9px 16px;
  transition: border-color 0.15s ease, color 0.15s ease;
  display: inline-flex; align-items: center; gap: 7px;
}
.lab-actions button:hover, .lab-actions a.act:hover { border-color: var(--red-line); color: var(--red); }
.lab-actions button:disabled { opacity: 0.4; cursor: not-allowed; }
.lab-actions button.ghost-on { border-color: rgba(255,199,41,0.4); color: var(--amber); background: var(--amber-soft); }

/* corner table ------------------------------------------------------------------- */
.corner-panel { margin-top: 20px; }
.corner-panel h2 { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 4px; }
.corner-panel .sub {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: 12px;
}
.table-scroll { overflow-x: auto; }
.lab-table { width: 100%; border-collapse: collapse; min-width: 520px; }
.lab-table th {
  font-family: var(--font-mono); font-size: 10px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint);
  text-align: right; padding: 0 14px 9px 0; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.lab-table th:first-child { text-align: left; }
.lab-table td {
  font-family: var(--font-mono); font-variant-numeric: tabular-nums;
  font-size: 13.5px; color: var(--ink); text-align: right;
  padding: 9px 14px 9px 0; border-bottom: 1px solid var(--line-soft); white-space: nowrap;
}
.lab-table td:first-child { text-align: left; font-weight: 700; }
.lab-table td .alt { display: block; font-size: 10px; color: var(--ink-faint); }
.lab-table tbody tr { cursor: default; }
.lab-table tbody tr:hover, .lab-table tbody tr.active { background: var(--amber-soft); }
.lab-table tbody tr.active td:first-child { color: var(--amber); }
.corner-locked-note {
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 18px 22px; color: var(--ink-muted); font-size: 14.5px;
}
.corner-locked-note a { color: var(--red); font-weight: 600; }

/* pro CTA ------------------------------------------------------------------------ */
.pro-cta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  background: linear-gradient(140deg, rgba(250,59,51,0.10), var(--surface) 55%);
  border: 1px solid var(--red-line);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 28px 0;
}
.pro-cta h3 { font-size: clamp(17px, 2.2vw, 21px); font-weight: 700; letter-spacing: -0.015em; margin: 8px 0 6px; }
.pro-cta p { color: var(--ink-muted); font-size: 14px; max-width: 520px; }
.pro-cta-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.pro-cta .store-note {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-faint);
}

/* track picker ------------------------------------------------------------------- */
.picker-section { padding: clamp(36px, 6vw, 64px) 0; }
.picker-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 26px; }
.picker-card {
  position: relative; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px 14px 12px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.picker-card:hover { border-color: var(--red-line); transform: translateY(-2px); }
.picker-card.selected { border-color: var(--red); box-shadow: 0 0 0 1px var(--red); }
.picker-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; margin-bottom: 10px; }
.picker-card h3 { font-size: 13.5px; font-weight: 700; line-height: 1.25; letter-spacing: -0.005em; }
.picker-card .meta {
  font-family: var(--font-mono); font-size: 9.5px; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--ink-faint); margin-top: 4px;
}
.picker-card .p-badge {
  position: absolute; top: 10px; right: 10px; z-index: 2;
  font-family: var(--font-mono); font-size: 9px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px;
}
.picker-card .p-badge.free { background: var(--amber-soft); color: var(--amber); border: 1px solid rgba(255,199,41,0.35); }
.picker-card .p-badge.locked { background: var(--surface-2); color: var(--ink-muted); border: 1px solid var(--line); }
.picker-card .guide-mini {
  display: inline-block; margin-top: 8px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em;
  color: var(--ink-muted); text-transform: uppercase;
}
.picker-card .guide-mini:hover { color: var(--red); }

/* toast ---------------------------------------------------------------------- */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 20px);
  background: var(--surface-2); color: var(--ink);
  border: 1px solid var(--line); border-radius: 999px;
  font-family: var(--font-mono); font-size: 12.5px;
  padding: 11px 20px; opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease; z-index: 90;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* footer disclaimer band (same as guides) ------------------------------------- */
.disclaimer-band {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-soft);
  padding: 16px 20px; margin-bottom: 28px;
  color: var(--ink-faint); font-size: 12.5px;
}
.disclaimer-band strong { color: var(--ink-muted); }

/* ============================================================================
   Static /lab/tracks/<slug>/ landing pages (generated by build_lab_pages.py)
   ========================================================================== */
.lab-land-hero { padding: clamp(30px, 5vw, 56px) 0 clamp(30px, 5vw, 52px); }
.lab-land-hero h1 {
  font-size: clamp(32px, 4.8vw, 54px); font-weight: 700;
  line-height: 1.02; letter-spacing: -0.03em; margin: 16px 0 12px;
}
.lab-land-hero .locale {
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-muted); margin-bottom: 16px;
}
.lab-land-hero .lead { font-size: 16px; color: var(--ink-muted); max-width: 560px; margin-bottom: 24px; }
.map-fine {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--ink-faint);
  margin-top: 12px; text-align: center;
}
.lap-table-block h2, .brake-block h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.015em; margin-bottom: 6px; }
.block-sub {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: 16px;
}
.brake-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.brake-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}
.brake-card .t {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--red);
}
.brake-card h3 { font-size: 17px; font-weight: 700; margin: 8px 0 10px; letter-spacing: -0.01em; }
.brake-card .n { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 26px; font-weight: 700; }
.brake-card .n .unit { font-size: 12px; color: var(--ink-faint); }
.brake-card .d {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em;
  color: var(--ink-muted); margin-top: 6px;
}
.embed-doc pre {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 16px 18px;
  overflow-x: auto; margin: 12px 0 8px;
}
.embed-doc code { font-family: var(--font-mono); font-size: 12px; color: var(--ink-muted); white-space: pre; }
.land-cta { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; margin: 26px 0 8px; }
.land-fine { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.04em; }

/* ============================================================================
   Embed mode — ?embed=1 (readonly canvas + lap time + backlink)
   ========================================================================== */
html.embed .site-header, html.embed .footer, html.embed .crumbs,
html.embed .param-col, html.embed .lab-actions, html.embed .corner-panel,
html.embed .picker-section, html.embed .pro-cta, html.embed .lab-top .provenance-line,
html.embed .lab-top .track-meta { display: none !important; }
html.embed body { min-height: auto; }
html.embed .lab-top { padding: 14px 0 0; }
html.embed .lab-top h1 { font-size: 22px; margin: 6px 0 4px; }
html.embed .lab-app { padding: 10px 0 14px; }
html.embed .lab-grid { grid-template-columns: 1fr; }
html.embed .readout .lap { font-size: 38px; }
html.embed .container { padding: 0 14px; }
.embed-backlink {
  display: none;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  color: var(--red); letter-spacing: 0.04em; margin-top: 10px;
}
html.embed .embed-backlink { display: inline-flex; }

/* responsive -------------------------------------------------------------------- */
@media (max-width: 960px) {
  .lab-grid { grid-template-columns: 1fr; }
  .param-panel { position: static; }
  .param-col { order: 2; }
  .lab-main { order: 1; }
  .picker-grid { grid-template-columns: repeat(3, 1fr); }
  .brake-cards { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .picker-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .picker-card { padding: 10px 10px 10px; }
  .readout .lap { font-size: 40px; }
  .readout-stats .stat { padding: 8px 10px; min-width: 70px; }
}