/* Polices hébergées avec le site (licence OFL, voir vendor/fonts) */
@font-face {
  font-family: 'Instrument Sans';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url(vendor/fonts/instrument-sans-latin.woff2) format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(vendor/fonts/jetbrains-mono-latin.woff2) format('woff2');
}

:root {
  --papier: #F3EFE6;
  --papier-2: #EAE4D6;
  --scene: #E6E0D2;
  --encre: #1F1D1A;
  --encre-2: #5F594F;
  --trait: #D3CAB8;
  --plan: #2B4C7E;
  --plan-clair: #E2E8F1;
  --rayon: 4px;
  --sans: 'Instrument Sans', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; overflow-x: clip; }

body {
  background: var(--papier);
  color: var(--encre);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; color: inherit; }

.app {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  height: 100dvh;
}

/* ---------- Vue 3D ---------- */

.viewer {
  position: relative;
  overflow: hidden;
  background: var(--scene);
  min-height: 320px;
}

.viewer canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: grab;
}

.viewer canvas:active { cursor: grabbing; }

.marque {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.marque-logo {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--encre);
  color: var(--papier);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.02em;
  border-radius: var(--rayon);
}

.marque-logo.avec-image {
  width: 48px;
  height: 48px;
  padding: 3px;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.marque-logo img { width: 100%; height: 100%; object-fit: contain; }

.marque strong { display: block; font-size: 15px; }
.marque small { display: block; font-size: 12px; color: var(--encre-2); }

.badge-demo {
  position: absolute;
  top: 24px;
  right: 20px;
  margin: 0;
  padding: 4px 8px;
  font: 500 11px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--plan);
  border: 1px dashed var(--plan);
  border-radius: var(--rayon);
  background: rgba(243, 239, 230, 0.75);
}

.vues {
  position: absolute;
  left: 20px;
  bottom: 20px;
  display: flex;
  border: 1px solid var(--encre);
  border-radius: var(--rayon);
  overflow: hidden;
  background: var(--papier);
}

.vues button {
  border: 0;
  border-right: 1px solid var(--trait);
  background: transparent;
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.vues button:last-child { border-right: 0; }
.vues button:hover { background: var(--papier-2); }
.vues button.actif,
.vues button[aria-pressed="true"] { background: var(--encre); color: var(--papier); }

.aide {
  position: absolute;
  right: 20px;
  bottom: 22px;
  margin: 0;
  font-size: 12px;
  color: var(--encre-2);
  pointer-events: none;
}

.erreur-3d {
  position: absolute;
  inset: 40% 20px auto;
  margin: 0;
  text-align: center;
  color: var(--encre-2);
}

/* Écran de chargement : le carport se dessine trait par trait */
.chargement {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  background: var(--scene);
  transition: opacity 0.45s ease;
}

.chargement svg { width: 120px; height: 80px; }

.chargement .trace {
  fill: none;
  stroke: var(--plan);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: tracer 1.6s ease-in-out infinite alternate;
}

@keyframes tracer { to { stroke-dashoffset: 0; } }

.chargement p { margin: 0; font: 500 12px var(--mono); color: var(--encre-2); }
.chargement.fini { opacity: 0; pointer-events: none; }

.cotes { position: absolute; inset: 0; pointer-events: none; }
.cotes.cache { display: none; }

.cote {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 2px 6px;
  font: 500 12px var(--mono);
  color: var(--plan);
  background: rgba(243, 239, 230, 0.92);
  border: 1px solid var(--plan);
  border-radius: 2px;
  white-space: nowrap;
}

/* ---------- Panneau ---------- */

.panel {
  overflow-y: auto;
  border-left: 1px solid var(--trait);
  background: var(--papier);
}

.intro { padding: 32px 28px 8px; }

.surtitre {
  margin: 0 0 6px;
  font: 500 11px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--plan);
}

h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.chapo { margin: 10px 0 0; color: var(--encre-2); }

.etape {
  padding: 22px 28px 24px;
  border-bottom: 1px solid var(--trait);
}

.etape h2 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.etape h2 span { font: 500 12px var(--mono); color: var(--plan); }

.sous-titre {
  margin: 18px 0 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--encre-2);
}

/* Curseurs */

.curseur {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  row-gap: 6px;
  margin-bottom: 16px;
}

.curseur label { font-weight: 500; }
.curseur output { font: 500 14px var(--mono); }

.curseur input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  margin: 0;
  height: 22px;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.curseur input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: linear-gradient(var(--encre), var(--encre)) 0 / var(--rempli, 50%) 100% no-repeat, var(--trait);
}

.curseur input[type="range"]::-moz-range-track { height: 2px; background: var(--trait); }
.curseur input[type="range"]::-moz-range-progress { height: 2px; background: var(--encre); }

.curseur input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -8px;
  border-radius: 50%;
  background: var(--papier);
  border: 2px solid var(--encre);
}

.curseur input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--papier);
  border: 2px solid var(--encre);
}

.curseur input[type="range"]:focus-visible { outline: 2px solid var(--plan); outline-offset: 4px; }

.note-technique {
  margin: 4px 0 0;
  padding: 8px 10px;
  font: 400 12px/1.5 var(--mono);
  color: var(--plan);
  background: var(--plan-clair);
  border-radius: var(--rayon);
}

/* Formes de toit */

.segments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.segments-2 { grid-template-columns: repeat(2, 1fr); }
.segments-4 { grid-template-columns: repeat(4, 1fr); }
.segments-2 button,
.segments-4 button { padding: 10px 6px; }

.segments button {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 12px 6px 10px;
  background: transparent;
  border: 1px solid var(--trait);
  border-radius: var(--rayon);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.segments svg { width: 46px; height: 26px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linejoin: round; }
.segments small { display: block; font: 400 11px var(--mono); opacity: 0.75; }
.segments button:hover { border-color: var(--encre); }
.segments button[aria-checked="true"] { background: var(--encre); border-color: var(--encre); color: var(--papier); }
.segments button:disabled { opacity: 0.4; cursor: not-allowed; border-style: dashed; }
.segments button:disabled:hover { border-color: var(--trait); }
.aide-sous { margin: 10px 0 0; }

/* Listes de choix */

.liste-choix { display: grid; gap: 6px; }

.liste-choix button {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  text-align: left;
  background: transparent;
  border: 1px solid var(--trait);
  border-radius: var(--rayon);
  cursor: pointer;
}

.liste-choix button:hover { border-color: var(--encre); }
.liste-choix button[aria-checked="true"] { border-color: var(--encre); box-shadow: inset 0 0 0 1px var(--encre); }

.pastille {
  flex: none;
  width: 18px;
  height: 18px;
  border-radius: 2px;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

.liste-choix .delta { margin-left: auto; }
.teintes .delta { display: block; margin-top: 1px; }

/* Teintes */

.teintes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.teintes button {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  text-align: left;
  font-size: 14px;
  background: transparent;
  border: 1px solid var(--trait);
  border-radius: var(--rayon);
  cursor: pointer;
}

.teintes .pastille { width: 28px; height: 28px; }
.teintes button:hover { border-color: var(--encre); }
.teintes button[aria-checked="true"] { border-color: var(--encre); box-shadow: inset 0 0 0 1px var(--encre); }

/* Options */

.options { display: grid; }

.option {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--trait);
  cursor: pointer;
}

.option:last-child { border-bottom: 0; }
.option span { font-weight: 500; margin-right: auto; }
.option small { display: block; font-weight: 400; font-size: 12px; color: var(--encre-2); }
.option-discrete span { font-weight: 400; color: var(--encre-2); }

.option input { position: absolute; right: 0; top: 50%; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

/* Écart de prix affiché à côté de chaque choix */
.delta {
  font: 400 12px var(--mono);
  font-style: normal;
  color: var(--encre-2);
  white-space: nowrap;
}

.delta.plus::before { content: '+'; }

.aide-etape { margin: -8px 0 14px; font-size: 13px; color: var(--encre-2); }

.curseur label small { font-weight: 400; font-size: 12px; color: var(--encre-2); }

/* Raccourcis de dimensions */

.raccourcis {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.raccourcis button {
  padding: 6px 11px;
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--trait);
  border-radius: 999px;
  cursor: pointer;
}

.raccourcis button:hover { border-color: var(--encre); }
.raccourcis button[aria-pressed="true"] { background: var(--encre); border-color: var(--encre); color: var(--papier); }

/* Nuancier de la couverture */

.nuancier { display: flex; flex-wrap: wrap; gap: 10px; }

.nuancier button {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.18);
  box-shadow: 0 0 0 3px var(--papier);
  cursor: pointer;
}

.nuancier button[aria-checked="true"] { box-shadow: 0 0 0 3px var(--papier), 0 0 0 5px var(--encre); }
.sous-titre span { font-weight: 400; color: var(--encre-2); }

/* Plan vu de dessus pour choisir les parois */

.plan {
  display: grid;
  grid-template-columns: 1fr 120px 1fr;
  grid-template-areas: ". arriere ." "gauche dessin droite" ". entree .";
  align-items: center;
  justify-items: center;
  gap: 6px 10px;
  margin-bottom: 6px;
}

.plan-dessin { grid-area: dessin; width: 120px; height: 150px; }
.cote-arriere { grid-area: arriere; }
.cote-gauche { grid-area: gauche; justify-self: end; }
.cote-droite { grid-area: droite; justify-self: start; }

.plan-entree {
  grid-area: entree;
  margin: 0;
  font: 500 11px var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--encre-2);
}

.cote-plan {
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  border: 1px dashed var(--encre-2);
  border-radius: var(--rayon);
  cursor: pointer;
}

.cote-plan:hover { border-style: solid; }
.cote-plan[aria-pressed="true"] { background: var(--encre); border: 1px solid var(--encre); color: var(--papier); }
.cote-plan:disabled { opacity: 0.55; cursor: default; }

.sous-option { padding: 4px 0 4px; }
.sous-option[hidden] { display: none; }

/* Résumé de la configuration */

.resume {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.resume li {
  padding: 3px 8px;
  font-size: 12px;
  background: var(--papier-2);
  border-radius: var(--rayon);
}

.option i {
  flex: none;
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 11px;
  background: var(--trait);
  transition: background 0.15s;
}

.option i::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--papier);
  transition: transform 0.15s;
}

.option input:checked + i { background: var(--encre); }
.option input:checked + i::after { transform: translateX(16px); }
.option input:focus-visible + i { outline: 2px solid var(--plan); outline-offset: 2px; }

/* Prix */

.etape-prix { border-bottom: 0; padding-bottom: 40px; }

.total {
  margin: 0;
  font: 500 40px/1 var(--mono);
  letter-spacing: -0.03em;
}

.total small { font: 500 13px var(--sans); letter-spacing: 0; color: var(--encre-2); }

.fourchette { margin: 8px 0 14px; font-size: 13px; color: var(--encre-2); }

.detail { margin-bottom: 14px; font-size: 13px; }
.detail summary { cursor: pointer; font-weight: 500; color: var(--plan); }

.detail dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 16px;
  margin: 12px 0 0;
}

.detail dt { color: var(--encre-2); }
.detail dd { margin: 0; font-family: var(--mono); text-align: right; }
.detail .sep { grid-column: 1 / -1; border-top: 1px solid var(--trait); }
.detail .fort { color: var(--encre); font-weight: 600; }

.avertissement { margin: 0 0 18px; font-size: 12px; color: var(--encre-2); }

.cta {
  display: block;
  width: 100%;
  padding: 14px 18px;
  border: 0;
  border-radius: var(--rayon);
  background: var(--encre);
  color: var(--papier);
  font-weight: 600;
  font-size: 15px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s;
}

.cta:hover { background: var(--plan); }

.cta-secondaire {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 12px 18px;
  background: transparent;
  border: 1px solid var(--encre);
  border-radius: var(--rayon);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}

.cta-secondaire:hover { background: var(--papier-2); }

/* Onglets d'étapes : seulement sur mobile */
.onglets { display: none; }
.suivant { display: none; }

.lien {
  display: block;
  margin: 12px auto 0;
  padding: 4px;
  border: 0;
  background: none;
  font-size: 13px;
  color: var(--encre-2);
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.lien:hover { color: var(--encre); }

/* Barre prix mobile */

.barre-mobile { display: none; }

/* Dialogue */

dialog {
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100dvh - 32px);
  padding: 28px;
  border: 0;
  border-radius: 6px;
  background: var(--papier);
  color: var(--encre);
}

dialog::backdrop { background: rgba(31, 29, 26, 0.55); }

dialog h2 { margin: 0 0 6px; font-size: 22px; }
dialog p { margin: 0 0 18px; color: var(--encre-2); }

.vue-form label {
  display: grid;
  gap: 4px;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 500;
}

.vue-form small { font-weight: 400; color: var(--encre-2); }

.vue-form input,
.vue-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--trait);
  border-radius: var(--rayon);
  background: #FBF9F4;
  font-size: 15px;
}

.vue-form input:focus,
.vue-form textarea:focus { outline: 2px solid var(--plan); outline-offset: 0; border-color: transparent; }

.actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

.actions .cta { width: auto; }
.actions .lien { margin: 0 auto 0 0; }

#recap-image {
  display: block;
  width: 100%;
  border-radius: var(--rayon);
  border: 1px solid var(--trait);
  margin-bottom: 12px;
}

#recap-texte {
  margin: 0 0 12px;
  padding: 14px;
  max-height: 260px;
  overflow: auto;
  font: 400 12px/1.6 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: #FBF9F4;
  border: 1px solid var(--trait);
  border-radius: var(--rayon);
}

/* ---------- Mobile ---------- */

@media (max-width: 900px) {
  .app { grid-template-columns: minmax(0, 1fr); height: auto; }
  .panel, .viewer { min-width: 0; }

  :root { --h-vue: 56vh; }
  @supports (height: 1svh) { :root { --h-vue: 56svh; } }

  .viewer {
    position: sticky;
    top: 0;
    z-index: 2;
    height: var(--h-vue);
    border-bottom: 1px solid var(--trait);
  }

  /* Une étape à la fois, onglets collés sous la vue 3D */
  .panel.par-etapes .intro { display: none; }
  .panel.par-etapes .etape:not(.active) { display: none; }
  .panel.par-etapes .etape { border-bottom: 0; min-height: calc(100svh - var(--h-vue) - 140px); }

  .panel.par-etapes .onglets {
    position: sticky;
    top: var(--h-vue);
    z-index: 2;
    display: flex;
    gap: 4px;
    padding: 8px 16px;
    overflow-x: auto;
    scrollbar-width: none;
    background: var(--papier);
    border-bottom: 1px solid var(--trait);
  }

  .onglets::-webkit-scrollbar { display: none; }

  .onglets button {
    flex: none;
    padding: 6px 10px;
    font-size: 13px;
    font-weight: 500;
    color: var(--encre-2);
    background: transparent;
    border: 0;
    border-radius: var(--rayon);
    cursor: pointer;
  }

  .onglets button span { font: 500 11px var(--mono); margin-right: 4px; color: var(--plan); }
  .onglets button[aria-current="step"] { background: var(--encre); color: var(--papier); }
  .onglets button[aria-current="step"] span { color: var(--papier); opacity: 0.7; }

  .panel.par-etapes .suivant {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 12px 16px;
    text-align: right;
    font-weight: 600;
    background: var(--papier-2);
    border: 0;
    border-radius: var(--rayon);
    cursor: pointer;
  }

  .marque { top: 14px; left: 16px; }
  .marque-logo { width: 32px; height: 32px; font-size: 12px; }
  .badge-demo { top: 18px; right: 16px; }
  .vues { left: 16px; bottom: 14px; }
  .vues button { padding: 6px 10px; font-size: 12px; }
  .aide { display: none; }

  /* Sur mobile c'est la page qui défile (sinon les onglets collants seraient relatifs au panneau) */
  .panel { border-left: 0; padding-bottom: 88px; overflow: visible; }
  .intro { padding: 24px 16px 4px; }
  h1 { font-size: 24px; }
  .etape { padding: 20px 16px 22px; }
  .etape-prix .cta { display: none; }

  .barre-mobile {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    background: var(--papier);
    border-top: 1px solid var(--encre);
  }

  .barre-mobile p { margin: 0; font: 500 20px var(--mono); }
  .barre-mobile small { display: block; font: 400 11px var(--sans); color: var(--encre-2); }
  .barre-mobile .cta { width: auto; padding: 12px 18px; }

  dialog { padding: 20px; }
  .actions { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  .chargement .trace { animation: none; stroke-dashoffset: 0; }
}