/* Thermodrift instrument UI. Depends on tokens.css. Square geometry, 8 px rhythm, hard shadows. */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--td-color-surface-base);
  color: var(--td-color-ink-primary);
  font: var(--td-text-sm)/1.5 var(--td-font-ui);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--td-font-editorial); font-weight: 400; letter-spacing: -0.02em; margin: 0; }
h1 { font-size: var(--td-text-xl); line-height: 1.15; }
h2 { font-size: var(--td-text-lg); line-height: 1.2; }
h3 { font-size: var(--td-text-md); line-height: 1.3; }
p { margin: 0; }
a { color: var(--td-color-data-periwinkle); text-underline-offset: 3px; }
code, .td-mono { font-family: var(--td-font-mono); font-size: var(--td-text-xs); overflow-wrap: anywhere; }
.td-num { font-family: var(--td-font-numeric); font-variant-numeric: tabular-nums lining-nums; }
:focus-visible { outline: var(--td-focus-ring) solid var(--td-color-focus); outline-offset: 2px; }
.td-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- brand ---------- */
.td-logo { display: block; height: auto; width: 176px; aspect-ratio: 1172 / 227; }
.td-brand { display: flex; align-items: center; gap: var(--td-space-3); }
.td-diamond { width: 9px; height: 9px; flex: none; background: var(--td-color-brand-brass); transform: rotate(45deg); }
.td-lab-letters { display: block; fill: var(--td-color-brand-brass); }
.td-lab-letters svg { display: block; height: 22px; width: auto; }
.td-app-id { display: flex; align-items: center; gap: var(--td-space-3); min-width: 0; }
@media (forced-colors: active) { .td-diamond { background: CanvasText; } .td-lab-letters { fill: CanvasText; } }
.td-label {
  display: inline-block; background: var(--td-color-brand-red); color: var(--td-color-brand-white);
  font-family: var(--td-font-editorial); padding: 2px 8px; text-shadow: var(--td-shadow-title-small);
}
.td-title { font-family: var(--td-font-editorial); text-shadow: var(--td-shadow-title); }
.td-kicker { font: 600 var(--td-text-xs)/1.2 var(--td-font-ui); letter-spacing: 0.12em; text-transform: uppercase; color: var(--td-color-ink-muted); }
.td-index { font: 600 var(--td-text-xs)/1 var(--td-font-numeric); color: var(--td-color-data-rose); letter-spacing: 0.1em; margin-right: var(--td-space-1); }
.td-rule-double { border: 0; border-top: 1px solid var(--td-color-surface-border); border-bottom: 1px solid var(--td-color-surface-border); height: 4px; margin: var(--td-space-3) 0; }

/* ---------- shell ---------- */
.td-shell { min-height: 100vh; display: flex; flex-direction: column; }
.td-header {
  display: flex; align-items: center; gap: var(--td-space-3); flex-wrap: wrap;
  padding: var(--td-space-2) var(--td-space-3); border-bottom: var(--td-rule) solid var(--td-color-surface-border);
}
.td-header .td-app-name { display: flex; flex-direction: column; gap: 2px; }
.td-header .td-app-name strong { font: 400 var(--td-text-lg)/1.1 var(--td-font-editorial); }
.td-header .td-spacer { flex: 1; }
.td-main { padding: var(--td-space-3); display: grid; gap: var(--td-space-3); }
.td-grid-3 { display: grid; gap: var(--td-space-3); grid-template-columns: minmax(260px, 1fr) minmax(420px, 2fr) minmax(280px, 1.1fr); align-items: start; }
@media (max-width: 1180px) { .td-grid-3 { grid-template-columns: minmax(260px, 1fr) minmax(360px, 2fr); } .td-grid-3 > :last-child { grid-column: 1 / -1; } }
@media (max-width: 760px) { .td-grid-3 { grid-template-columns: 1fr; } .td-main { padding: var(--td-space-2); } .td-header { padding: var(--td-space-2); } .td-app-id > .td-diamond { display: none; } }
@media (max-width: 380px) { .td-brand { gap: var(--td-space-2); } }

.td-panel { background: var(--td-color-surface-panel); border: var(--td-rule) solid var(--td-color-surface-border); }
.td-panel > header { display: flex; align-items: baseline; justify-content: space-between; gap: var(--td-space-2); padding: var(--td-space-2) var(--td-space-2) 0; }
.td-panel > .td-body { padding: var(--td-space-2); display: grid; gap: var(--td-space-2); grid-template-columns: minmax(0, 1fr); }
.td-panel, .td-grid-3 > * { min-width: 0; }
.td-caption { color: var(--td-color-ink-muted); font-size: var(--td-text-xs); }
.td-muted { color: var(--td-color-ink-muted); }

/* ---------- source banner (never confusable with live hardware) ---------- */
.td-source { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; font: 700 var(--td-text-xs)/1 var(--td-font-ui); letter-spacing: 0.1em; text-transform: uppercase; border: 1px solid currentColor; }
.td-source[data-kind="ble"] { color: var(--td-color-status-live); }
.td-source[data-kind="simulated"], .td-source[data-kind="replay"] {
  color: var(--td-color-ink-inverse); border-color: var(--td-color-status-simulated);
  background: repeating-linear-gradient(135deg, var(--td-color-status-simulated) 0 10px, #e2d2ff 10px 20px);
}
.td-simulated-banner {
  padding: 8px var(--td-space-3); color: var(--td-color-status-simulated); font-size: var(--td-text-sm); font-weight: 600;
  border-bottom: 1px solid var(--td-color-surface-border);
}

/* ---------- buttons ---------- */
.td-btn {
  min-height: var(--td-control-height); padding: 0 var(--td-space-2); border-radius: 0;
  font: 600 var(--td-text-sm)/1 var(--td-font-ui); cursor: pointer;
  background: transparent; color: var(--td-color-ink-primary); border: 1px solid var(--td-color-surface-border-strong);
  transition: background var(--td-motion-fast) var(--td-motion-ease), border-color var(--td-motion-fast);
}
.td-btn:hover:not(:disabled) { background: var(--td-color-surface-raised); border-color: var(--td-color-ink-muted); }
.td-btn--primary { background: var(--td-color-brand-red); border-color: var(--td-color-brand-red); color: var(--td-color-brand-white); text-shadow: var(--td-shadow-title-small); }
.td-btn--primary:hover:not(:disabled) { background: #c8282a; border-color: #c8282a; }
.td-btn--light { background: var(--td-color-brand-red-light); border-color: var(--td-color-brand-red-light); color: var(--td-color-ink-inverse); }
.td-btn:disabled { cursor: not-allowed; opacity: 1; color: var(--td-color-ink-muted); background: transparent; border-style: dashed; border-color: var(--td-color-surface-border-strong); text-shadow: none; }
.td-action { display: grid; gap: 4px; align-content: start; }
.td-why { font-size: var(--td-text-xs); line-height: 1.35; color: var(--td-color-status-warning); }
.td-why[hidden] { display: none; }
.td-why b { font-weight: 600; color: var(--td-color-ink-primary); }
.td-button-row { display: flex; flex-wrap: wrap; gap: var(--td-space-1) var(--td-space-2); align-items: start; }

/* ---------- status ---------- */
.td-status-strip { display: flex; flex-wrap: wrap; gap: var(--td-space-1) var(--td-space-3); padding: var(--td-space-1) var(--td-space-3); border-bottom: var(--td-rule) solid var(--td-color-surface-border); background: var(--td-color-surface-panel); }
.td-status { display: inline-flex; align-items: center; gap: 6px; font-size: var(--td-text-xs); }
.td-status .td-status-label { color: var(--td-color-ink-muted); }
.td-status .td-status-value { font-family: var(--td-font-numeric); font-variant-numeric: tabular-nums; font-weight: 600; }
.td-status[data-tone="ready"] .td-status-value { color: var(--td-color-status-ready); }
.td-status[data-tone="live"] .td-status-value { color: var(--td-color-status-live); }
.td-status[data-tone="warning"] .td-status-value { color: var(--td-color-status-warning); }
.td-status[data-tone="error"] .td-status-value { color: var(--td-color-status-error); }
.td-status[data-tone="stale"] .td-status-value, .td-status[data-tone="idle"] .td-status-value { color: var(--td-color-status-stale); }
.td-status[data-tone="simulated"] .td-status-value { color: var(--td-color-status-simulated); }
.td-icon { width: 12px; height: 12px; flex: none; }
@keyframes td-pulse { 50% { opacity: 0.35; } }
.td-status[data-tone="live"] .td-icon { animation: td-pulse 1.6s var(--td-motion-ease) infinite; }
@media (prefers-reduced-motion: reduce) { .td-status[data-tone="live"] .td-icon { animation: none; } }

/* ---------- forms ---------- */
.td-field { display: grid; gap: 4px; min-width: 0; }
.td-field > span, .td-field > label { font-size: var(--td-text-xs); color: var(--td-color-ink-muted); }
select, textarea, input[type="text"] {
  font: var(--td-text-sm)/1.4 var(--td-font-ui); color: var(--td-color-ink-primary); background: var(--td-color-surface-base);
  border: 1px solid var(--td-color-surface-border-strong); border-radius: 0; padding: 8px; min-width: 0; max-width: 100%;
}
select {
  min-height: var(--td-control-height); appearance: none; padding-right: 40px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23A2AAC8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center; background-size: 12px 8px;
}
@media (forced-colors: active) { select { appearance: auto; background-image: none; padding-right: 8px; } }
textarea { resize: vertical; min-height: 56px; }
select:disabled, textarea:disabled, input:disabled { color: var(--td-color-ink-muted); border-style: dashed; }
.td-check { display: grid; grid-template-columns: 20px 1fr; gap: 8px; align-items: start; font-size: var(--td-text-sm); cursor: pointer; }
.td-check input { width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--td-color-data-rose); }
.td-check[data-done="true"] span { color: var(--td-color-ink-primary); }

/* ---------- protocol ---------- */
.td-block-card { border: 1px solid var(--td-color-surface-border-strong); padding: var(--td-space-2); display: grid; gap: var(--td-space-1); }
.td-block-card[data-state="running"] { border-color: var(--td-color-status-live); }
.td-block-card[data-state="completed"] { border-color: var(--td-color-status-ready); }
.td-block-card[data-state="interrupted"], .td-block-card[data-state="aborted"] { border-color: var(--td-color-status-error); }
.td-countdown { font: 400 var(--td-text-2xl)/1 var(--td-font-numeric); font-variant-numeric: tabular-nums; }
.td-progress { height: 4px; background: var(--td-color-surface-border); }
.td-progress > i { display: block; height: 100%; background: var(--td-color-status-live); }
.td-protocol-btn { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; text-align: left; padding: 10px var(--td-space-2); height: auto; }
.td-protocol-btn small { grid-column: 2; font-weight: 400; color: inherit; opacity: 0.85; font-size: var(--td-text-xs); }
.td-protocol-btn .td-index { grid-row: span 2; align-self: center; }

/* ---------- charts ---------- */
.td-chart { position: relative; display: grid; gap: 4px; }
.td-chart-head { display: flex; justify-content: space-between; gap: var(--td-space-2); font-size: var(--td-text-xs); color: var(--td-color-ink-muted); }
.td-chart-head strong { color: var(--td-color-ink-primary); font-weight: 600; }
.td-chart canvas { width: 100%; display: block; background: var(--td-color-surface-base); border: 1px solid var(--td-color-surface-border); }
.td-chart-foot { font-size: var(--td-text-xs); color: var(--td-color-ink-muted); }
.td-band-bars { display: grid; gap: 4px; }
.td-band-bars div { display: grid; grid-template-columns: 56px 1fr 52px; gap: 8px; align-items: center; font-size: var(--td-text-xs); }
.td-band-bars i { display: block; height: 8px; background: linear-gradient(90deg, var(--td-color-data-periwinkle) var(--v), var(--td-color-surface-border) var(--v)); }

/* ---------- tables ---------- */
.td-table { width: 100%; border-collapse: collapse; font-size: var(--td-text-xs); }
.td-table th, .td-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--td-color-surface-border); vertical-align: top; }
.td-table th { color: var(--td-color-ink-muted); font-weight: 600; }
.td-table td.td-num, .td-table th.td-num { text-align: right; }
.td-scroll-x { overflow-x: auto; }

/* ---------- montage ---------- */
.td-montage svg { width: 100%; max-width: 320px; height: auto; display: block; margin: 0 auto; }
.td-lead-list { display: grid; gap: 6px; font-size: var(--td-text-xs); }
.td-lead { display: grid; grid-template-columns: 14px auto 1fr; gap: 8px; align-items: center; }
.td-lead i { width: 12px; height: 12px; border: 1px solid var(--td-color-ink-muted); border-radius: 50%; }

/* ---------- metric tiles ---------- */
.td-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--td-space-2); }
.td-metric { border-top: 1px solid var(--td-color-surface-border-strong); padding-top: var(--td-space-1); }
.td-metric strong { display: block; font: 400 var(--td-text-xl)/1.1 var(--td-font-numeric); font-variant-numeric: tabular-nums; color: var(--td-color-data-rose); }
.td-metric span { font-size: var(--td-text-xs); color: var(--td-color-ink-muted); }

/* ---------- hidden data during protocols ---------- */
.td-hidden-data { position: relative; }
.td-hidden-data::after {
  content: attr(data-hidden-label); position: absolute; inset: 0; display: grid; place-items: center;
  background: var(--td-color-surface-base); color: var(--td-color-ink-muted); font-size: var(--td-text-sm); border: 1px dashed var(--td-color-surface-border-strong);
}

/* ---------- tabs ---------- */
.td-tablist { position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; align-items: stretch; gap: 0 var(--td-space-1); padding: 0 var(--td-space-3); background: var(--td-color-surface-base); border-bottom: var(--td-rule) solid var(--td-color-surface-border-strong); }
.td-tab { appearance: none; background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; padding: 13px var(--td-space-2) 11px; color: var(--td-color-ink-muted); font: 400 var(--td-text-lg)/1.1 var(--td-font-editorial); cursor: pointer; white-space: nowrap; }
.td-tab:hover { color: var(--td-color-ink-primary); }
.td-tab[aria-selected="true"] { color: var(--td-color-ink-primary); border-bottom-color: var(--td-color-data-sand); }
.td-tablist .td-spacer { flex: 1; }
.td-tab-live { align-self: center; font-size: var(--td-text-xs); color: var(--td-color-status-live); font-variant-numeric: tabular-nums; }
.td-tabpanel > .td-panel > header h2 { display: none; }
.td-tabpanel > .td-panel > header { justify-content: flex-end; }
.td-tabpanel > .td-panel > header:not(:has(.td-kicker)) { display: none; }
.td-tabs--sub > .td-tablist { position: static; padding: 0; gap: 0; background: transparent; border-bottom-color: var(--td-color-surface-border); }
.td-tabs--sub .td-tab { font: 400 var(--td-text-sm)/1.2 var(--td-font-ui); padding: 9px var(--td-space-2) 8px; }
.td-tabs--sub > .td-tabpanels { padding-top: var(--td-space-2); }
@media (max-width: 760px) { .td-tablist { padding: 0 var(--td-space-1); flex-wrap: nowrap; overflow-x: auto; } .td-tab { padding: 11px 10px 9px; font-size: var(--td-text-md); } }

/* ---------- placement plates ---------- */
.td-plates { display: grid; gap: var(--td-space-2); grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr)); }
.td-plate { margin: 0; min-width: 0; }
@media (max-width: 480px) {
  /* Keep the labels legible on a phone: the plates scroll sideways instead of shrinking. */
  .td-plates { display: flex; overflow-x: auto; scroll-snap-type: x proximity; }
  .td-plate { flex: 0 0 440px; scroll-snap-align: start; }
}
.td-plate svg { display: block; width: 100%; height: auto; }

/* ---------- tab layouts ---------- */
.td-setup-columns { display: grid; gap: var(--td-space-3); grid-template-columns: minmax(0, 1.2fr) minmax(280px, 1fr); align-items: start; }
.td-setup-columns > div { display: grid; gap: var(--td-space-2); min-width: 0; }
.td-chart-pair { display: grid; gap: var(--td-space-2); grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
.td-protocol-run { display: grid; gap: var(--td-space-2); }
@media (max-width: 980px) { .td-setup-columns, .td-chart-pair { grid-template-columns: minmax(0, 1fr); } }
/* The run panel stays beside the signal and the written protocol. */
.td-workspace { display: grid; gap: var(--td-space-3); grid-template-columns: minmax(0, 1fr) minmax(300px, 360px); align-items: start; }
.td-workspace[data-rail="off"] { grid-template-columns: minmax(0, 1fr); }
.td-workspace > * { min-width: 0; }
.td-rail { position: sticky; top: 60px; max-height: calc(100vh - 72px); overflow-y: auto; }
.td-rail[hidden] { display: none; }
.td-rail > header { padding-bottom: var(--td-space-1); }
.td-rail > header h2 { font: 400 var(--td-text-lg)/1.1 var(--td-font-editorial); }
.td-rail > .td-protocol-run { padding: var(--td-space-2); }
@media (max-width: 1100px) { .td-workspace { grid-template-columns: minmax(0, 1fr); } .td-rail { position: static; max-height: none; overflow: visible; } }
/* Example results: visibly apart from anything recorded. */
.td-example-note { display: flex; flex-wrap: wrap; align-items: center; gap: var(--td-space-1) var(--td-space-2); padding: var(--td-space-2); border: 1px dashed var(--td-color-data-sand); }
.td-example-note strong { font: 600 var(--td-text-xs)/1.2 var(--td-font-ui); letter-spacing: 0.12em; text-transform: uppercase; color: var(--td-color-data-sand); }
.td-example-note span { flex: 1 1 240px; font-size: var(--td-text-sm); color: var(--td-color-ink-muted); }
.td-example-pair { display: grid; gap: var(--td-space-3); grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
.td-example-pair > * { min-width: 0; }
.td-example-show { justify-self: start; }
.td-example-figure { margin: 0; }
.td-example-figure svg { display: block; width: 100%; height: auto; }
.td-example-reading { display: grid; gap: var(--td-space-1); margin: 0; padding-left: 1.1em; font-size: var(--td-text-sm); line-height: 1.5; color: var(--td-color-ink-primary); }
@media (max-width: 980px) { .td-example-pair { grid-template-columns: minmax(0, 1fr); } }

/* ---------- written protocol ---------- */
.td-guide-body { display: grid; gap: var(--td-space-2); }
.td-guide-question { font: 400 var(--td-text-lg)/1.35 var(--td-font-editorial); max-width: 68ch; }
.td-guide-facts { display: grid; gap: var(--td-space-3); grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); font-size: var(--td-text-sm); color: var(--td-color-ink-muted); }
.td-guide-facts ul { margin: 6px 0 0; padding-left: 16px; display: grid; gap: 2px; }
.td-guide-facts p { margin-top: 6px; }
.td-steps { list-style: none; margin: 0; padding: 0; display: grid; }
.td-step { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: var(--td-space-1); padding: var(--td-space-2) 0; border-top: 1px solid var(--td-color-surface-border); }
.td-step-n { font: italic 400 var(--td-text-lg)/1.2 var(--td-font-editorial); color: var(--td-color-data-sand); }
.td-step strong { font-weight: 600; }
.td-step p { color: var(--td-color-ink-muted); font-size: var(--td-text-sm); max-width: 72ch; margin-top: 2px; }
.td-link-btn { appearance: none; background: none; border: 0; padding: 0; margin-top: 4px; color: var(--td-color-data-sand); font: inherit; font-size: var(--td-text-xs); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; }
.td-guide-limit { font-size: var(--td-text-xs); color: var(--td-color-ink-muted); max-width: 86ch; }
.td-guide-limit strong { color: var(--td-color-ink-primary); font-weight: 600; }
.td-guide-table td:nth-child(4) { min-width: 240px; color: var(--td-color-ink-muted); }
@media (max-width: 560px) { .td-guide-facts { grid-template-columns: minmax(0, 1fr); } }
.td-main--tabs { padding: 0; display: block; }
.td-main--tabs .td-tabpanels { padding: var(--td-space-3); }
.td-main--tabs .td-workspace { padding: var(--td-space-3); }
.td-main--tabs .td-workspace > .td-tabpanels { padding: 0; }
.td-main--tabs .td-tabs--sub .td-tabpanels { padding: var(--td-space-2) 0 0; }
@media (max-width: 760px) { .td-main--tabs .td-tabpanels, .td-main--tabs .td-workspace { padding: var(--td-space-2); } .td-main--tabs .td-workspace > .td-tabpanels { padding: 0; } }
.td-tab-live:empty { display: none; }