/* BEMACO — vues 3D des tuyaux (page tuyaux à joint intégré) */
.tuyau3d {
  position: relative; overflow: hidden; aspect-ratio: 3 / 2; min-height: 220px;
  background: radial-gradient(120% 90% at 50% 38%, #ffffff 0%, #f1f2f4 62%, #e5e7eb 100%);
  user-select: none; -webkit-user-select: none;
}
.product-card-images .tuyau3d > img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.tuyau3d.is-3d > img { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .25s; }
.tuyau3d.is-3d.is-plan > img { opacity: 1; pointer-events: auto; }
.tuyau3d .t3d-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; transition: opacity .25s; }
.tuyau3d .t3d-canvas:active { cursor: grabbing; }
.tuyau3d.is-plan .t3d-canvas, .tuyau3d.is-plan .t3d-labels, .tuyau3d.is-plan .t3d-tools,
.tuyau3d.is-plan .t3d-hint { opacity: 0; pointer-events: none; }

/* étiquettes de cotes */
.t3d-labels { position: absolute; inset: 0; pointer-events: none; transition: opacity .25s; }
.t3d-lab {
  position: absolute; left: 0; top: 0; white-space: nowrap; will-change: transform;
  margin: -11px 0 0 0; translate: -50% 0; padding: 2px 8px; border-radius: 999px;
  font: 600 11.5px/18px -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
  color: #1a1a2e; background: rgba(255,255,255,.88); box-shadow: 0 1px 3px rgba(26,26,46,.12), inset 0 0 0 1px rgba(178,49,59,.28);
  transition: opacity .2s;
}
.t3d-lab b { font-weight: 700; color: #B2313B; }
.t3d-lab i { font-style: normal; font-weight: 500; color: #54595F; }
.t3d-lab.haut { margin-top: -26px; }
.t3d-lab.coupe { box-shadow: 0 1px 3px rgba(26,26,46,.14); background: rgba(26,26,46,.82); color: #fff; }
.t3d-lab.coupe i { color: #d9dbe0; }
.t3d-lab.coupe b { color: #fff; }

/* sélecteur 3D / Plan */
.t3d-switch {
  position: absolute; top: 10px; right: 10px; display: flex; padding: 3px; gap: 2px; border-radius: 999px;
  background: rgba(255,255,255,.78); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 6px rgba(26,26,46,.12);
}
.t3d-switch button, .t3d-tools button {
  appearance: none; border: 0; margin: 0; cursor: pointer; font: inherit; -webkit-tap-highlight-color: transparent;
}
.t3d-switch button {
  padding: 4px 12px; border-radius: 999px; background: transparent; color: #54595F;
  font: 600 12px/18px -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; letter-spacing: .02em;
  transition: background .2s, color .2s;
}
.t3d-switch button.on { background: #1a1a2e; color: #fff; }
.t3d-switch button:not(.on):hover { color: #1a1a2e; }

/* outils */
.t3d-tools { position: absolute; right: 10px; bottom: 10px; display: flex; gap: 6px; }
.t3d-tools button {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 11px 0 9px; border-radius: 999px;
  background: rgba(255,255,255,.82); color: #1a1a2e; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 6px rgba(26,26,46,.12);
  font: 600 12px/1 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  transition: background .2s, color .2s, transform .15s;
}
.t3d-tools button:hover { transform: translateY(-1px); }
.t3d-tools button.on { background: #B2313B; color: #fff; }
.t3d-tools button:focus-visible, .t3d-switch button:focus-visible { outline: 2px solid #B2313B; outline-offset: 2px; }

.t3d-hint {
  position: absolute; left: 12px; top: 14px; pointer-events: none;
  font: 500 11.5px/1 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #7A7A7A;
  transition: opacity .6s;
}
.t3d-hint.off { opacity: 0; }

/* données de la fiche sous chaque tuyau */
.product-card-meta .t3d-donnees { display: inline-flex; flex-wrap: wrap; gap: .25rem .9rem; }
.product-card-meta .t3d-donnees b { color: var(--dark, #1a1a2e); font-weight: 600; }

/* sur deux colonnes, la vue 3D prend la hauteur de la photo voisine */
@media (min-width: 901px) {
  .product-card-images > .tuyau3d { aspect-ratio: auto; height: 100%; min-height: 320px; }
}

@media (max-width: 560px) {
  .tuyau3d { aspect-ratio: 4 / 3; }
  .t3d-tools button span { display: none; }
  .t3d-tools button { width: 34px; height: 34px; padding: 0; justify-content: center; }
  .t3d-lab { font-size: 10.5px; line-height: 16px; padding: 1px 6px; }
}