/* Base design tokens and reusable UI components. */

:root {
  --ground:      #E6E9E5;   /* mylar — drafting film, deliberately not paper-white */
  --panel:       #EDEFEA;
  --ink:         #0F1513;   /* graphite-160 */
  --ink-soft:    #47544E;
  --rule:        #78877F;
  --rule-faint:  #BCC5BF;
  --accent:      #00A88C;   /* bee-cyan — markers, rule arcs, focus */
  --amber:       #B87405;   /* modelled, not measured */
  --vermilion:   #BF3A21;   /* VIOLATED / OUT OF RANGE only */
  --focus:       #00A88C;

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --cond: "Avenir Next Condensed", "Helvetica Neue Condensed", "Roboto Condensed",
          "Arial Narrow", "Liberation Sans Narrow", ui-sans-serif, sans-serif;
  --prose: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --hair: 1px solid var(--rule-faint);
  --gap: 1rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0F1513; --panel: #161C1A; --ink: #E6E9E5; --ink-soft: #9BA9A2;
    --rule: #6E7D76; --rule-faint: #2C3733;
    --accent: #39D9B6; --amber: #E9A63A; --vermilion: #F0573A; --focus: #39D9B6;
  }
}
:root[data-theme="dark"] {
  --ground: #0F1513; --panel: #161C1A; --ink: #E6E9E5; --ink-soft: #9BA9A2;
  --rule: #6E7D76; --rule-faint: #2C3733;
  --accent: #39D9B6; --amber: #E9A63A; --vermilion: #F0573A; --focus: #39D9B6;
}
:root[data-theme="light"] {
  --ground: #E6E9E5; --panel: #EDEFEA; --ink: #0F1513; --ink-soft: #47544E;
  --rule: #78877F; --rule-faint: #BCC5BF;
  --accent: #00A88C; --amber: #B87405; --vermilion: #BF3A21; --focus: #00A88C;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--prose);
  font-size: 15px;
  overflow-x: hidden;
}

:where(a, button, input, select, [tabindex]):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.vh {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0;
}

.plate-label {
  font-family: var(--cond);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
  font-weight: 600;
}

/* ---------- instrument rail ---------- */

.rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap);
  padding: 0.55rem 1rem;
  border-bottom: var(--hair);
  background: var(--panel);
}

.rail-id { display: flex; flex-direction: column; line-height: 1.2; }
.rail-id strong { font-family: var(--mono); font-size: 13px; font-weight: 500; }

.rail-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.25rem;
  margin: 0;
}
.rail-facts > div { display: flex; flex-direction: column; line-height: 1.25; }
.rail-facts dt {
  font-family: var(--cond); font-size: 10px; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-soft);
}
.rail-facts dd {
  margin: 0; font-family: var(--mono); font-size: 12px;
  font-variant-numeric: tabular-nums slashed-zero;
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0ms !important; animation-duration: 0ms !important; }
}

/* ---------- data plate ---------- */

.data { display: flex; flex-direction: column; min-width: 0; }
.block { padding: 0.9rem 1rem; border-bottom: var(--hair); }
.block > .plate-label { margin-bottom: 0.55rem; }

.leaders { margin: 0; display: flex; flex-direction: column; gap: 0.3rem; }
.leaders > div {
  display: flex; align-items: baseline; gap: 0.4rem; flex-wrap: wrap;
  font-family: var(--mono); font-size: 12px;
  font-variant-numeric: tabular-nums slashed-zero;
}
.leaders dt { color: var(--ink-soft); white-space: nowrap; }
.leaders .dots {
  flex: 1; border-bottom: 1px dotted var(--rule-faint);
  transform: translateY(-0.25em); min-width: 1rem;
}
.leaders dd { margin: 0; white-space: nowrap; }

.lamps .state { font-family: var(--cond); letter-spacing: 0.08em; text-transform: uppercase; }
.state-nom { color: var(--accent); }
.state-under { color: var(--amber); }
.state-bad { color: var(--vermilion); }
.struck { text-decoration: line-through; color: var(--ink-soft); }
.modelled { color: var(--amber); }

.ctl-stack { display: flex; flex-direction: column; gap: 0.55rem; }
.ctl-row {
  display: flex; align-items: center; justify-content: space-between; gap: 0.6rem;
  font-family: var(--cond); font-size: 11px; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--ink-soft);
}
.ctl-row output { font-family: var(--mono); font-size: 12px; color: var(--ink); }
.ctl-row input[type="range"] { flex: 1; max-width: 9rem; accent-color: var(--accent); }
.ctl-row select {
  font-family: var(--mono); font-size: 12px;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--rule); border-radius: 2px; padding: 0.25rem 0.35rem;
}

.table-scroll { overflow-x: auto; }
.reg { border-collapse: collapse; width: 100%; font-family: var(--mono); font-size: 12px; }
.reg th, .reg td {
  text-align: right; padding: 0.28rem 0.4rem;
  border-bottom: 1px solid var(--rule-faint);
  font-variant-numeric: tabular-nums slashed-zero;
  white-space: nowrap;
}
.reg th {
  font-family: var(--cond); font-size: 10px; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-soft); font-weight: 600;
}
.reg th:first-child, .reg td:first-child { text-align: left; }
.reg .provcell { display: flex; align-items: center; justify-content: flex-end; gap: 0.35rem; }
.provbar { width: 34px; height: 3px; background: var(--rule-faint); position: relative; }
.provbar i { position: absolute; inset: 0 auto 0 0; background: var(--amber); }

.prose {
  font-family: var(--prose); font-size: 13px; line-height: 1.55;
  color: var(--ink-soft); max-width: 62ch; margin: 0.7rem 0 0;
}

.foot { padding: 0.9rem 1rem 1.4rem; border-top: var(--hair); }