:root {
  --bg: #222;
  --panel: #11151a;
  --text: #eee;
  --muted: #bfcad4;
  --accent: #4caf50;
  --accent-hover: #45a049;
  --grid: #1c222a;
  --axis: #4b5a68;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header, .controls, footer {
  max-width: 1200px;
  margin: 16px auto;
  padding: 12px 16px;
  background: var(--panel);
  border-radius: 12px;
  box-shadow: 0 1px 0 #000 inset, 0 0 0 1px #0f141a;
}
header h1 { margin: 0 0 6px; font-weight: 600; font-size: 20px; }
header p { margin: 0; color: var(--muted); }
/* Illustration unique, réduite d'un tiers environ */
header .diagram { margin: 10px 0 10px; text-align: center; }
header .diagram img {
  width: min(540px, 95%); /* réduit depuis 820px (~ -34%) */
  height: auto;
  display: inline-block;
  border-radius: 10px;
  border: 1px solid #2a2a2a;
  box-shadow: 0 1px 0 #000 inset, 0 0 0 1px #0f141a;
}
header .diagram figcaption {
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
  text-align: center;
}

.controls {
  max-width: 1200px;
  margin: 16px auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(240px, 1fr));
  gap: 14px;
  background: var(--panel);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: 0 1px 0 #000 inset, 0 0 0 1px #0f141a;
}
.control label { display: inline-block; margin-bottom: 6px; color: var(--text); }
.inline { margin-left: 8px; color: var(--muted); }
.ctrl-row {
  grid-column: 1 / -1;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.stim-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(120px, 1fr));
  gap: 8px;
  margin-top: 6px;
}
.stim-grid button, .ctrl-row button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
}
.stim-grid button:hover, .ctrl-row button:hover { background: var(--accent-hover); }

/* Grille 3 colonnes: O1/O3 | Résultats | O2/O4 */
.scopes-3col {
  max-width: 1200px;
  margin: 16px auto;
  display: grid;
  grid-template-columns: 1fr minmax(220px, 260px) 1fr;
  gap: 14px;
  align-items: stretch;
}
.col {
  background: var(--panel);
  border-radius: 12px;
  padding: 12px;
  box-shadow: 0 1px 0 #000 inset, 0 0 0 1px #0f141a;
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
}
.scope { padding: 0; }
.scope-title { color: #cfeecf; font-weight: 600; margin-bottom: 6px; }
canvas#scopeO1, canvas#scopeO2, canvas#scopeO3, canvas#scopeO4 {
  width: 100%;
  aspect-ratio: 900 / 340;
  display: block;
  background: #000;
  border-radius: 12px;
  border: 4px solid var(--accent);
  box-shadow: inset 0 0 12px rgba(0,0,0,0.5);
}

/* Panneau étroit central */
.result-narrow {
  background: #0b1a0b;
  border: 2px solid var(--accent);
  border-radius: 12px;
  padding: 10px 12px;
  box-shadow: inset 0 0 12px rgba(0,0,0,0.5), 0 1px 0 #000 inset, 0 0 0 1px #0f141a;
  color: #cfeecf;
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100%;
}
.result-title { font-weight: 700; color: #cfeecf; margin-bottom: 6px; }
.result-body { color: #e9ffe9; line-height: 1.35; white-space: pre-line; }

/* Pastilles état */
.pill { padding: 4px 10px; border-radius: 999px; border: 1px solid #2a2a2a; font-weight: 600; }
.ok { background:#0f2f0f; color:#bff0bf; }
.no { background:#2f0f0f; color:#f0c0bf; }

/* Responsive */
@media (max-width: 900px) {
  .scopes-3col { grid-template-columns: 1fr; }
  .col { grid-template-rows: auto; }
  .result-narrow { min-height: auto; }
}