/* Page « Comprendre sa toiture » : maquette 3D démontable */
.t3d-sec{padding:40px 0 64px}
.t3d{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto;background:var(--surface);border:1px solid var(--ligne);border-radius:var(--radius);overflow:hidden}
.t3d-view{position:relative;height:62vh;min-height:340px;max-height:620px;background:linear-gradient(#2c3843,#1a2026);overflow:hidden}
.t3d-view canvas{position:absolute;inset:0;width:100%;height:100%;display:block;outline:none;touch-action:none}
.t3d-poster{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;gap:10px}
.t3d-poster svg{width:min(260px,70%);height:auto}
.t3d-poster h2{margin:6px 0 0;font-size:clamp(26px,5vw,34px)}
.t3d-poster p{margin:0;color:var(--soft);max-width:36ch}
.t3d-poster .note{font-size:14px}
.t3d-hint{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);background:rgba(20,20,20,.85);color:var(--soft);font-size:14px;padding:6px 14px;border-radius:999px;border:1px solid var(--ligne);white-space:nowrap;transition:opacity .4s;pointer-events:none}
.t3d-hint.gone{opacity:0}
.t3d-panel{min-width:0;border-top:1px solid var(--ligne);padding:14px 16px 18px;display:flex;flex-direction:column;gap:12px}
.t3d-panel.locked{opacity:.45;pointer-events:none}
.t3d-seg{display:grid;grid-template-columns:repeat(2,1fr);background:var(--surface2);border-radius:10px;padding:3px;gap:3px}
.t3d-seg.types{grid-template-columns:repeat(4,1fr)}
.t3d-seg button{font:inherit;font-size:15px;font-weight:600;border:0;border-radius:8px;padding:9px 4px;background:transparent;color:var(--soft);cursor:pointer;min-height:40px}
.t3d-seg button[aria-pressed="true"]{background:var(--anthracite);color:var(--blanc);box-shadow:inset 0 0 0 2px var(--vif)}
.t3d-explode{display:flex;align-items:center;gap:12px}
.t3d-explode .btn{min-width:124px;font-size:16px;padding:10px 14px;min-height:44px}
.t3d-explode input{flex:1;accent-color:var(--brule);height:28px}
.t3d-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
.t3d-chips::-webkit-scrollbar{display:none}
.t3d-chip{flex:none;display:flex;align-items:center;gap:8px;font:inherit;font-weight:500;font-size:15px;background:var(--surface2);color:var(--blanc);border:2px solid transparent;border-radius:999px;padding:7px 13px;cursor:pointer;min-height:40px}
.t3d-chip[aria-pressed="true"]{border-color:var(--vif)}
.t3d-chip.off{opacity:.5;text-decoration:line-through}
.t3d .dot{width:12px;height:12px;border-radius:50%;flex:none}
.t3d-info{min-height:90px}
.t3d-info h3{margin:0 0 6px;display:flex;align-items:center;gap:8px;font-size:23px}
.t3d-info p{margin:0 0 8px;color:var(--soft);font-size:16px}
.t3d-info .acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.t3d-info .acts button,.t3d-info .acts a{font:inherit;font-size:15px;font-weight:600;border:0;border-radius:8px;padding:9px 13px;background:var(--surface2);color:var(--blanc);cursor:pointer;text-decoration:none;min-height:40px;display:inline-flex;align-items:center}
.t3d-info .acts .go{background:var(--brule)}
.t3d-info figure{margin:0 0 12px;border-radius:8px;overflow:hidden;background:#111}
.t3d-info figure img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.t3d-info figcaption{font-size:13.5px;color:var(--soft);padding:6px 10px}
.t3d-thumbs{display:flex;gap:8px;margin:-4px 0 12px}
.t3d-thumbs button{flex:1;padding:0;border:2px solid transparent;border-radius:6px;overflow:hidden;background:none;cursor:pointer;max-width:110px}
.t3d-thumbs button[aria-pressed="true"]{border-color:var(--vif)}
.t3d-thumbs img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover}
.t3d button:focus-visible,.t3d a:focus-visible,.t3d input:focus-visible{outline:3px solid var(--vif);outline-offset:2px}
.tag-illus{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:var(--surface2);color:var(--soft);border-radius:4px;padding:1px 6px;margin-right:6px}
@media (min-width:900px){
  .t3d{grid-template-columns:minmax(0,1fr) 380px;grid-template-rows:none}
  .t3d-view{height:640px;max-height:none}
  .t3d-panel{min-width:0;border-top:0;border-left:1px solid var(--ligne);max-height:640px;overflow-y:auto}
  .t3d-chips{flex-wrap:wrap;overflow:visible}
}
/* Fiches des éléments */
.couches{display:grid;gap:28px}
.couche{display:grid;gap:18px;background:var(--surface);border:1px solid var(--ligne);border-radius:var(--radius);padding:18px;scroll-margin-top:90px}
.couche h3{margin:0 0 8px;font-size:clamp(24px,4vw,30px);display:flex;align-items:center;gap:10px}
.couche p{margin:0 0 10px;color:var(--soft)}
.couche .pics{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.couche .pics figure{margin:0}
.couche .pics .open{display:block;width:100%;padding:0;border:0;background:none;cursor:zoom-in;border-radius:8px;overflow:hidden}
.couche .pics img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.couche .pics figcaption{font-size:14px;color:var(--soft);margin-top:6px}
.couche .links{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:6px}
.couche .links a{color:var(--blanc);font-weight:600}
@media (min-width:900px){
  .couche{grid-template-columns:1fr 1.1fr;align-items:start;padding:24px}
}
@media (prefers-reduced-motion:reduce){.t3d-hint{transition:none}}
.couche .dot{width:14px;height:14px;border-radius:50%;flex:none}
.t3d-cta{margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:var(--anthracite);border:1px solid var(--ligne);border-left:4px solid var(--brule);border-radius:var(--radius);padding:20px 22px}
.t3d-cta p{margin:0;max-width:46ch}
.t3d-cta b{color:var(--blanc)}
/* miniatures : carrées, taille fixe (correctif Safari mobile) */
.t3d-thumbs{display:flex;flex-wrap:wrap;align-items:flex-start;gap:8px;margin:-4px 0 12px}
.t3d-thumbs button{flex:0 0 auto;width:64px;height:64px;max-width:none;padding:0;border:2px solid transparent;border-radius:8px;overflow:hidden;background:#111;cursor:pointer;line-height:0}
.t3d-thumbs img{display:block;width:100%;height:100%;aspect-ratio:auto;object-fit:cover}

/* === Maquette 3D v2 : ciel, repères de problèmes, visite guidée === */
.t3d-view{background:linear-gradient(180deg,#9fbbd0 0%,#c9d8e2 45%,#dfe7ec 70%)}
#t3d-modes{grid-template-columns:repeat(3,1fr)}
.t3d-tourbtn{width:100%;min-height:46px;font-size:17px}
.t3d-tourbtn[aria-pressed="true"]{background:var(--surface2);box-shadow:inset 0 0 0 2px var(--vif)}
.t3d-moss{font:inherit;font-size:15px;font-weight:600;border:1px dashed var(--gris);border-radius:10px;background:transparent;color:var(--blanc);padding:9px 12px;min-height:42px;cursor:pointer}
.t3d-moss[aria-pressed="true"]{border-style:solid;border-color:#7d8f3c;background:rgba(125,143,60,.18)}
.t3d-marks{position:absolute;inset:0;pointer-events:none;z-index:2}
.t3d-mark{position:absolute;left:0;top:0;width:34px;height:34px;border-radius:50%;border:3px solid #fff;background:var(--brule);color:#fff;font:inherit;font-weight:800;font-size:16px;line-height:1;cursor:pointer;pointer-events:auto;box-shadow:0 2px 10px rgba(0,0,0,.45);padding:0}
.t3d-mark::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:2px solid var(--vif);animation:t3dPulse 1.8s ease-out infinite;pointer-events:none}
.t3d-mark[aria-pressed="true"]{background:#fff;color:var(--brule)}
@keyframes t3dPulse{0%{transform:scale(.7);opacity:.9}100%{transform:scale(1.35);opacity:0}}
.t3d-cap{position:absolute;left:10px;right:10px;bottom:10px;z-index:3;max-width:520px;background:rgba(22,22,22,.92);border:1px solid var(--ligne);border-radius:12px;padding:10px 12px 12px;color:var(--blanc);box-shadow:0 6px 24px rgba(0,0,0,.35)}
.t3d-cap .cap-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px}
.t3d-cap .cnt{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--vif)}
.t3d-cap .x{font:inherit;font-size:24px;line-height:1;width:36px;height:36px;border:0;border-radius:8px;background:transparent;color:var(--soft);cursor:pointer}
.t3d-cap h4{margin:0 0 4px;font-size:20px;display:flex;align-items:center;gap:8px}
.t3d-cap p{margin:0 0 10px;font-size:14.5px;line-height:1.4;color:#d9d9d9}
.t3d-cap .cap-acts{display:flex;flex-wrap:wrap;gap:8px}
.t3d-cap .cap-acts button,.t3d-cap .cap-acts a{font:inherit;font-size:15px;font-weight:600;border:0;border-radius:8px;padding:8px 13px;min-height:40px;background:var(--surface2);color:var(--blanc);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center}
.t3d-cap .cap-acts .go{background:var(--brule)}
.t3d-cap .cap-acts button:disabled{opacity:.4;cursor:default}
.t3d-cap:not([hidden]) ~ .t3d-hint,.t3d-view:has(.t3d-cap:not([hidden])) .t3d-hint{display:none}
.t3d-ask{margin-top:14px;padding-top:12px;border-top:1px solid var(--ligne)}
.t3d-ask p{margin:0 0 4px;font-size:15px}
.t3d-ask .acts{margin-top:6px}
.t3d-plist{display:grid;gap:6px;margin:6px 0 10px}
.t3d-plist button{display:flex;align-items:center;gap:10px;text-align:left;font:inherit;font-size:15.5px;font-weight:600;background:var(--surface2);color:var(--blanc);border:2px solid transparent;border-radius:10px;padding:8px 10px;min-height:44px;cursor:pointer}
.t3d-plist button[aria-pressed="true"]{border-color:var(--vif)}
.t3d-plist .n{width:26px;height:26px;border-radius:50%;background:var(--brule);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex:none}
.t3d-pcard{background:var(--anthracite);border:1px solid var(--ligne);border-left:4px solid var(--brule);border-radius:10px;padding:12px}
.t3d-pcard h4{margin:0 0 6px;font-size:20px}
.t3d-pcard p{font-size:15px}
.t3d-poster{overflow:hidden}
.t3d-poster .poster-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.t3d-poster::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(20,20,20,.15) 0%,rgba(20,20,20,.55) 55%,rgba(20,20,20,.85) 100%)}
.t3d-poster > :not(.poster-img){position:relative;z-index:2}
.t3d-poster h3{color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.6)}
.t3d-poster p{color:#e6e6e6}
.t3d-poster{justify-content:flex-end;padding-bottom:28px}
@media (prefers-reduced-motion:reduce){.t3d-mark::after{animation:none}}
@media (max-width:599px){
  .t3d-cap{left:8px;right:8px;bottom:8px;padding:8px 10px 10px}
  .t3d-cap h4{font-size:18px}
  .t3d-cap p{font-size:13.5px;margin-bottom:8px}
  .t3d-view{height:68vh}
}
.t3d.is-prob .t3d-seg.types,.t3d.is-prob .t3d-moss,.t3d.is-prob .t3d-chips,.t3d.is-prob .t3d-explode{display:none}