/* =====================================================================
   Simulateur de combustion - feuille de style
   Parti pris : tableau de bord d'instrument. Densite d'information elevee,
   chiffres en chasse fixe alignes, aucune decoration superflue.
   ===================================================================== */

:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #11161d;
  --fg: #e6edf3;
  --muted: #8b949e;
  --border: #30363d;
  --grid: #21262d;
  --accent: #58a6ff;
  --accent-2: #3fb950;
  --accent-3: #d29922;
  --accent-4: #bc8cff;
  --danger: #f85149;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --panel: #ffffff;
    --panel-2: #f0f3f6;
    --fg: #1f2328;
    --muted: #59636e;
    --border: #d1d9e0;
    --grid: #e4e8ec;
    --accent: #0969da;
    --accent-2: #1a7f37;
    --accent-3: #9a6700;
    --accent-4: #8250df;
    --danger: #cf222e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------- barre haute */
.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand h1 { margin: 0; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.brand p { margin: 2px 0 0; font-size: 12px; color: var(--muted); }

.verdict {
  font-family: var(--mono);
  font-size: 12px;
  padding: 7px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  max-width: 100%;
  min-width: 0;
  overflow-wrap: anywhere;
}
.verdict b { display: block; font-size: 14px; letter-spacing: 0.02em; margin-bottom: 2px; }
.verdict span { display: block; color: var(--muted); font-size: 11px; line-height: 1.45; }
.v-ok     { border-color: var(--accent-2); background: color-mix(in srgb, var(--accent-2) 12%, transparent); }
.v-warn1  { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.v-warn2  { border-color: var(--accent-3); background: color-mix(in srgb, var(--accent-3) 14%, transparent); }
.v-danger { border-color: var(--danger); background: color-mix(in srgb, var(--danger) 14%, transparent); }
.v-crit   { border-color: var(--danger); background: var(--danger); color: #fff; }
.v-crit span { color: rgba(255,255,255,.8); }

/* ------------------------------------------------------------- structure */
.layout {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
  align-items: start;
  max-width: 1800px;
  margin: 0 auto;
}
@media (max-width: 980px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

.controls, .results { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
@media (min-width: 981px) {
  .controls { position: sticky; top: 74px; max-height: calc(100vh - 90px); overflow-y: auto; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  min-width: 0;
}
.panel h2 {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: baseline;
  flex-wrap: wrap;
}
.hint { text-transform: none; letter-spacing: 0; font-weight: 400; font-size: 11px; opacity: .8; }
.note {
  margin: -4px 0 12px;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--muted);
  border-left: 2px solid var(--border);
  padding-left: 9px;
}

/* ------------------------------------------------------------ commandes */
.rows { display: flex; flex-direction: column; gap: 9px; }

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}
.row.comp { grid-template-columns: 1fr 74px 26px; }
.row > label { font-size: 12px; color: var(--muted); }

select, input[type="number"], input[type="text"] {
  background: var(--panel-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 5px 7px;
  font-size: 12.5px;
  font-family: inherit;
  width: 100%;
  min-width: 0;
}
input[type="number"] { font-family: var(--mono); text-align: right; }
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

input[type="range"] { width: 100%; accent-color: var(--accent); }
.slider-row { display: grid; grid-template-columns: 1fr; gap: 3px; }
.slider-row .lbl {
  display: flex; justify-content: space-between; gap: 8px;
  font-size: 11.5px; color: var(--muted);
}
.slider-row .lbl b { color: var(--fg); font-family: var(--mono); font-weight: 500; }

.btn-add, .btn-x {
  background: var(--panel-2);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 5px;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  padding: 6px 10px;
}
.btn-add { width: 100%; margin-top: 9px; }
.btn-add:hover, .btn-x:hover { border-color: var(--accent); color: var(--accent); }
.btn-x { padding: 4px 0; width: 26px; text-align: center; line-height: 1.1; }
.export-row { display: flex; gap: 8px; }
.export-row .btn-add { margin-top: 0; }

.sum { margin: 9px 0 0; font-size: 11.5px; color: var(--muted); font-family: var(--mono); }
.sum.warn { color: var(--accent-3); }
.err { color: var(--danger); font-size: 12.5px; margin: 0; }

.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.presets button {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--fg);
  border-radius: 20px;
  padding: 4px 11px;
  font-size: 11.5px;
  cursor: pointer;
  font-family: inherit;
}
.presets button:hover { border-color: var(--accent); color: var(--accent); }

/* ------------------------------------------------------------- lectures */
.grid-readout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.cell { background: var(--panel); padding: 8px 10px; min-width: 0; }
/* Le libelle est enroule sur deux lignes plutot que tronque : dans une
   lecture d'instrument, l'unite et la nuance du libelle font le sens. */
.cell .k {
  font-size: 10.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: block;
  line-height: 1.25;
  min-height: 2.5em;
  overflow-wrap: anywhere;
}
.cell .v {
  font-family: var(--mono);
  font-size: 15px;
  margin-top: 2px;
  display: block;
  overflow-wrap: anywhere;
}
.cell .u { font-size: 11px; color: var(--muted); margin-left: 3px; }
.cell.hl .v { color: var(--accent); }
.cell.bad .v { color: var(--danger); }
.cell.good .v { color: var(--accent-2); }
.cell.warn .v { color: var(--accent-3); }

.composition { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.bar { display: flex; height: 22px; border-radius: 4px; overflow: hidden; border: 1px solid var(--border); }
.bar span {
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-family: var(--mono); color: #06090f;
  overflow: hidden; white-space: nowrap;
}
.comp-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 11.5px; color: var(--muted); }
.comp-legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 5px; }

/* -------------------------------------------------------------- graphes */
.chart-wrap { margin-top: 8px; }
.chart { width: 100%; height: 250px; display: block; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 11.5px; color: var(--muted); padding: 4px 0 10px 56px; }
@media (max-width: 560px) { .legend { padding-left: 0; } }
.lg { display: inline-flex; align-items: center; gap: 6px; }
.lg i { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }

/* ------------------------------------------------------------- constats */
.findings { display: flex; flex-direction: column; gap: 8px; }
.finding {
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--panel-2);
}
.finding .head { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.finding .sev {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 1px 6px; border-radius: 3px; border: 1px solid currentColor;
}
.finding .dom { font-size: 10.5px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.finding .titre { font-weight: 600; font-size: 13.5px; flex: 1 1 100%; }
.finding .mesure {
  font-family: var(--mono); font-size: 12px; margin: 6px 0 0;
  padding: 5px 8px; background: var(--panel); border-radius: 4px;
  border: 1px solid var(--border); overflow-wrap: anywhere;
}
.finding .meca { font-size: 12.5px; color: var(--muted); margin: 7px 0 0; line-height: 1.55; }

.sev-info { border-left-color: var(--muted); }
.sev-info .sev { color: var(--muted); }
.sev-low { border-left-color: var(--accent); }
.sev-low .sev { color: var(--accent); }
.sev-med { border-left-color: var(--accent-3); }
.sev-med .sev { color: var(--accent-3); }
.sev-high { border-left-color: var(--danger); }
.sev-high .sev { color: var(--danger); }
.sev-crit { border-left-color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, var(--panel-2)); }
.sev-crit .sev { color: #fff; background: var(--danger); border-color: var(--danger); }

/* ----------------------------------------------------------- references */
.model-notes ul { margin: 0; padding-left: 18px; font-size: 12.5px; line-height: 1.7; color: var(--muted); }
.model-notes li b { color: var(--fg); font-weight: 600; }
.disclaimer {
  margin: 12px 0 0; font-size: 11.5px; line-height: 1.6; color: var(--muted);
  border-top: 1px solid var(--border); padding-top: 10px;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }