:root {
  --rouge: #e3061a;
  --rouge-fonce: #b80515;
  --texte: #1d1d1b;
  --gris: #5f6368;
  --bordure: #d6d6d6;
  --fond: #f4f4f2;
  --carte: #ffffff;
  --bleu: #44bdee;
  --rayon: 10px;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.45;
}

.entete {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px max(16px, calc((100% - 760px) / 2));
  background: var(--carte);
  border-bottom: 4px solid var(--rouge);
}
.logo { height: 44px; width: auto; }
h1 { margin: 0; font-size: 1.35rem; }
.sous-titre { margin: 2px 0 0; color: var(--gris); font-size: .95rem; }

main { max-width: 760px; margin: 0 auto; padding: 24px 16px 40px; }

.etapes {
  display: flex;
  gap: 8px;
  padding: 0;
  margin: 0 0 20px;
  list-style: none;
  counter-reset: etape;
}
.etapes li {
  flex: 1;
  counter-increment: etape;
  font-size: .85rem;
  color: var(--gris);
  border-top: 3px solid var(--rouge);
  padding-top: 6px;
}
.etapes li::before { content: counter(etape) ". "; font-weight: 700; color: var(--rouge); }

fieldset, .carte {
  background: var(--carte);
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  padding: 18px 20px 20px;
  margin: 0 0 16px;
}
legend {
  font-weight: 700;
  padding: 3px 8px;
  background: var(--bleu);
  border-radius: 4px;
}
.carte h2 { margin-top: 0; font-size: 1.2rem; }

label { display: block; font-weight: 600; margin: 12px 0 0; }
.aide { font-weight: 400; color: var(--gris); font-size: .875rem; }
input:not([type=checkbox]) {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  font: inherit;
  border: 1px solid var(--bordure);
  border-radius: 8px;
  background: #fff;
}
input:focus-visible, button:focus-visible, .bouton:focus-visible, summary:focus-visible {
  outline: 3px solid var(--bleu);
  outline-offset: 1px;
}
.verifie input:invalid { border-color: var(--rouge); }
.verifie .case:has(input:invalid) { color: var(--rouge); }

.grille { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

.case {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-weight: 500;
  margin: 10px 0 0;
  cursor: pointer;
}
.case input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--rouge); flex: none; }
.case > span { flex: 1; }
.vehicules .case { padding: 8px 10px; border: 1px solid var(--bordure); border-radius: 8px; margin-top: 8px; }
.vehicules .case:has(input:checked) { border-color: var(--rouge); background: #fff5f5; }
.mention {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--rouge-fonce);
}

.charte summary { cursor: pointer; color: var(--rouge-fonce); font-weight: 600; }
.charte ul { margin: 10px 0 0; padding-left: 20px; font-size: .92rem; }
.charte li { margin-bottom: 4px; }

.signature {
  position: relative;
  margin-top: 8px;
  border: 2px dashed var(--bordure);
  border-radius: 8px;
  background: #fff;
}
.signature canvas {
  display: block;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 5 / 2;
  touch-action: none;
  cursor: crosshair;
}
.signature .indication {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #9a9a9a;
  pointer-events: none;
}
.signature.signe .indication { display: none; }
.signature [data-effacer] { position: absolute; top: 6px; right: 10px; }

.erreur { color: var(--rouge); font-weight: 600; margin: 8px 0 0; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
button, .bouton {
  font: inherit;
  font-weight: 600;
  padding: 11px 18px;
  border-radius: 8px;
  border: 2px solid var(--rouge);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.principal { background: var(--rouge); color: #fff; }
.principal:hover { background: var(--rouge-fonce); border-color: var(--rouge-fonce); }
.secondaire { background: #fff; color: var(--rouge); }
.secondaire:hover { background: #fff5f5; }
.lien { border: 0; background: none; padding: 4px; color: var(--rouge-fonce); text-decoration: underline; font-weight: 500; }

.copie { display: flex; gap: 8px; margin: 12px 0 16px; }
.copie input { margin: 0; font-size: .85rem; }

.recap { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.recap dt { font-weight: 600; color: var(--gris); }
.recap dd { margin: 0; }

footer { text-align: center; color: var(--gris); font-size: .8rem; padding: 0 16px 32px; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--texte);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  max-width: calc(100% - 32px);
}

@media (max-width: 560px) {
  .entete { gap: 12px; }
  .logo { height: 32px; }
  h1 { font-size: 1.1rem; }
  .grille { grid-template-columns: 1fr; }
  .etapes { flex-direction: column; }
  .actions > * { flex: 1 1 100%; }
  .recap { grid-template-columns: 1fr; }
  .recap dd { margin-bottom: 6px; }
}