/* Michel Rénovation · la façade en 3D (préfixe fa3d) : scène, frise des étapes, repères, fiches, réglages.
   Variables de la charte : redéfinissables par le site (les valeurs ci-dessous ne s'appliquent que par défaut). */
:where(:root) {
  --cm-ink: #0C0C0D; --cm-ink-2: #17181A; --cm-ink-3: #222326;
  --cm-orange: #F7B500; --cm-orange-2: #FFD54A; --cm-zinc: #9EA3A8; --cm-bone: #F3F0E8;
  --cm-line: rgba(184, 187, 191, .16); --cm-line-2: rgba(184, 187, 191, .3);
  --cm-f-display: var(--cm-font-display, "Big Shoulders Display"), "Arial Narrow", sans-serif;
  --cm-f-serif: var(--cm-font-display, "Big Shoulders Display"), sans-serif;
  --cm-f-text: var(--cm-font-text, "Figtree"), system-ui, -apple-system, sans-serif;
  --cm-f-mono: var(--cm-font-mono, "JetBrains Mono"), "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
  --cm-ease: cubic-bezier(.22, .8, .2, 1);
  --cm-zinc-grad: linear-gradient(180deg, #e3e5e8 0%, #b9bdc2 46%, #9ca1a7 54%, #c9ccd0 100%);
}
.fa3d { position: relative; overflow: hidden; overflow: clip; padding-block: clamp(4.5rem, 9vw, 8rem); color: var(--cm-bone); font-family: var(--cm-f-text);
  background: radial-gradient(90% 60% at 85% 0%, rgba(247, 181, 0, .07), transparent 60%), radial-gradient(120% 80% at 15% 100%, #1c1d21 0%, var(--cm-ink) 62%); }
.fa3d::before { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .45; mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .7 0 0 0 0 .72 0 0 0 0 .76 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }
.fa3d *, .fa3d *::before, .fa3d *::after { box-sizing: border-box; }
.fa3d [hidden] { display: none !important; }
.fa3d__wrap { position: relative; width: min(100% - 2 * clamp(1rem, 4vw, 3rem), 92rem); margin-inline: auto; }
.fa3d__head { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 1.6rem 4rem; align-items: end; margin-bottom: clamp(2rem, 4vw, 3rem); }
.fa3d__kicker { display: inline-flex; align-items: center; gap: .9rem; margin: 0 0 1.3rem; font: 600 .74rem/1 var(--cm-f-display); letter-spacing: .26em; text-transform: uppercase; color: var(--cm-orange); }
.fa3d__kicker::before { content: ""; width: 2.6rem; height: 1px; background: linear-gradient(90deg, transparent, var(--cm-orange)); }
.fa3d__title { margin: 0; font: 500 clamp(2.1rem, 1.3rem + 3.3vw, 4.1rem)/1.02 var(--cm-f-display); letter-spacing: .02em; text-transform: uppercase; color: var(--cm-bone); text-wrap: balance; }
.fa3d__title em { display: block; font: italic 400 1.06em/1 var(--cm-f-serif); letter-spacing: 0; text-transform: none; color: var(--cm-zinc); background: var(--cm-zinc-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; padding-bottom: .08em; }
.fa3d__lede { margin: 0; max-width: 46ch; font-size: clamp(1rem, .95rem + .3vw, 1.15rem); line-height: 1.6; color: rgba(243, 240, 232, .78); text-wrap: pretty; }

.fa3d__app { display: grid; grid-template-columns: minmax(0, 1fr) 23.5rem; gap: 1rem; align-items: stretch; }

/* ---------- scène ---------- */
.fa3d__stage { position: relative; min-height: clamp(36rem, 47vw, 52rem); overflow: hidden; isolation: isolate; border-radius: 4px; touch-action: pan-y;
  background: radial-gradient(70% 60% at 55% 42%, #2a2c31 0%, #18191c 55%, #0e0f11 100%);
  box-shadow: inset 0 0 0 1px var(--cm-line), 0 50px 90px -60px rgba(0, 0, 0, .95); }
.fa3d__stage::before { content: ""; position: absolute; inset: 0 0 auto; height: 1px; z-index: 6; background: linear-gradient(90deg, transparent, var(--cm-orange) 30%, var(--cm-orange) 70%, transparent); opacity: .7; pointer-events: none; }
.fa3d__stage::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: radial-gradient(120% 100% at 50% 45%, transparent 60%, rgba(6, 6, 8, .5) 100%); }
.fa3d__stage > canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; outline: none; opacity: 0; transition: opacity 1s var(--cm-ease); }
.fa3d__stage > canvas:active { cursor: grabbing; }
.fa3d__app.has-tool:not(.is-touch) .fa3d__stage > canvas { cursor: none; }
.fa3d__app[data-step="5"] .fa3d__stage > canvas { cursor: ew-resize; }
.fa3d__app.is-grab .fa3d__stage > canvas { touch-action: none; }
.fa3d__stage > canvas:focus-visible { box-shadow: inset 0 0 0 2px var(--cm-orange); }
.fa3d__app.is-ready .fa3d__stage > canvas { opacity: 1; }
.fa3d__frame { position: absolute; inset: .7rem; pointer-events: none; z-index: 2; }
.fa3d__frame b { position: absolute; width: 1.1rem; height: 1.1rem; border: 0 solid var(--cm-orange); opacity: .8; }
.fa3d__frame b:nth-child(1) { top: 0; left: 0; border-width: 1px 0 0 1px; }
.fa3d__frame b:nth-child(2) { top: 0; right: 0; border-width: 1px 1px 0 0; }
.fa3d__frame b:nth-child(3) { bottom: 0; left: 0; border-width: 0 0 1px 1px; }
.fa3d__frame b:nth-child(4) { bottom: 0; right: 0; border-width: 0 1px 1px 0; }
.fa3d__load { position: absolute; inset: 0; z-index: 2; display: grid; place-content: center; justify-items: center; gap: 1rem; font: 600 .64rem/1 var(--cm-f-display); letter-spacing: .3em; text-transform: uppercase; color: rgba(243, 240, 232, .55); pointer-events: none; transition: opacity .6s; }
.fa3d__load svg { width: 8rem; fill: none; stroke: var(--cm-orange); stroke-width: 1.2; stroke-linecap: round; stroke-dasharray: 420; stroke-dashoffset: 420; animation: fa3d-trace 2.6s var(--cm-ease) infinite; }
@keyframes fa3d-trace { 60%, 100% { stroke-dashoffset: 0; } }
.fa3d__app.is-ready .fa3d__load, .fa3d__app.no-gl .fa3d__load { opacity: 0; }
.fa3d__nogl { display: none; position: absolute; inset: auto 1.5rem 1.5rem; z-index: 3; margin: 0; color: rgba(243, 240, 232, .7); }
.fa3d__app.no-gl .fa3d__nogl { display: block; }
.fa3d__app.no-gl .fa3d__tools, .fa3d__app.no-gl .fa3d__hint, .fa3d__app.no-gl .fa3d__meter { display: none; }
.fa3d__app[data-step="5"] .fa3d__tag { display: none; }
.fa3d__tag { position: absolute; z-index: 3; right: 1.3rem; top: 4.4rem; padding: .32rem .55rem; font: 500 .56rem/1 var(--cm-f-mono); letter-spacing: .16em; text-transform: uppercase; color: rgba(243, 240, 232, .6); background: rgba(14, 15, 17, .55); box-shadow: inset 0 0 0 1px var(--cm-line); pointer-events: none; }

/* frise des étapes */
.fa3d__steps { position: absolute; z-index: 4; top: 1.2rem; left: 1.3rem; right: 1.3rem; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .4rem; margin: 0; padding: 0; list-style: none; }
.fa3d__steps button { position: relative; width: 100%; display: flex; align-items: center; gap: .55rem; padding: .78rem .1rem .4rem; border: 0; background: none; color: rgba(243, 240, 232, .5); font: 600 .66rem/1.1 var(--cm-f-text); letter-spacing: .1em; text-transform: uppercase; text-align: left; cursor: pointer; transition: color .35s; text-shadow: 0 1px 8px rgba(0, 0, 0, .7); }
.fa3d__steps button::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: rgba(243, 240, 232, .16); }
.fa3d__steps button::after { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--cm-orange); transform: scaleX(0); transform-origin: left; transition: transform .6s var(--cm-ease), background .3s; }
.fa3d__steps button:hover { color: var(--cm-bone); }
.fa3d__steps button.is-on, .fa3d__steps button.is-done { color: var(--cm-bone); }
.fa3d__steps button.is-on::after { transform: scaleX(1); }
.fa3d__steps button.is-done::after { transform: scaleX(1); background: var(--cm-zinc); }
.fa3d__steps b { font: 600 .74rem/1 var(--cm-f-display); color: var(--cm-orange); min-width: 1.4em; }
.fa3d__steps span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fa3d__steps button:focus-visible { outline: 1px solid var(--cm-orange); outline-offset: 2px; }

/* repères des défauts */
.fa3d__pins { position: absolute; inset: 0; pointer-events: none; z-index: 3; }
.fa3d__pin { position: absolute; left: 0; top: 0; display: flex; align-items: center; height: 2rem; margin: -1rem 0 0 -1rem; padding: 0; border: 0; background: none; color: var(--cm-bone); cursor: pointer; pointer-events: auto; transition: opacity .4s; will-change: transform; }
.fa3d__pin b { position: relative; z-index: 0; display: grid; place-items: center; width: 2rem; height: 2rem; font: 600 .62rem/1 var(--cm-f-display); color: var(--cm-orange); }
.fa3d__pin b::before { content: ""; position: absolute; inset: .3rem; z-index: -1; transform: rotate(45deg); background: rgba(14, 15, 17, .86); box-shadow: inset 0 0 0 1.5px var(--cm-orange), 0 6px 16px -6px rgba(0, 0, 0, .9); transition: background .3s; }
.fa3d__pin b::after { content: ""; position: absolute; inset: .3rem; z-index: -2; transform: rotate(45deg); border: 1px solid var(--cm-orange); animation: fa3d-ping 2.8s ease-out infinite; }
@keyframes fa3d-ping { 0% { transform: rotate(45deg) scale(1); opacity: .8; } 70%, 100% { transform: rotate(45deg) scale(1.9); opacity: 0; } }
.fa3d__pin > span { max-width: 0; overflow: hidden; white-space: nowrap; padding: .42rem 0; background: rgba(14, 15, 17, .9); box-shadow: inset 0 0 0 1px var(--cm-line-2); font: 600 .6rem/1 var(--cm-f-display); letter-spacing: .14em; text-transform: uppercase; opacity: 0; transition: max-width .45s var(--cm-ease), padding .45s var(--cm-ease), opacity .3s; }
.fa3d__pin:hover > span, .fa3d__pin:focus-visible > span, .fa3d__pin.is-sel > span, .fa3d__pin.is-new > span { max-width: 12rem; padding: .42rem .7rem; opacity: 1; }
.fa3d__pin:hover b::before, .fa3d__pin.is-sel b::before { background: var(--cm-orange); }
.fa3d__pin:hover b, .fa3d__pin.is-sel b { color: var(--cm-ink); }
.fa3d__pin.is-sel b::after { animation: none; opacity: 0; }
.fa3d__pin.is-new b::before { animation: fa3d-pop .6s var(--cm-ease); }
@keyframes fa3d-pop { from { transform: rotate(45deg) scale(.2); } }
.fa3d__pin.is-off { opacity: 0; pointer-events: none; }
.fa3d__pin:focus-visible { outline: none; }
.fa3d__pin:focus-visible b::before { box-shadow: inset 0 0 0 1.5px var(--cm-orange), 0 0 0 3px rgba(247, 181, 0, .45); }
.fa3d__app.has-fiche .fa3d__pin:not(.is-sel) { opacity: .45; }
.fa3d__app.has-fiche .fa3d__pin.is-off { opacity: 0; }

/* étiquettes des couches (coupe éclatée) */
.fa3d__lay { position: absolute; left: 0; top: 0; display: flex; align-items: flex-start; gap: .55rem; transform-origin: 0 0; transition: opacity .5s; will-change: transform; pointer-events: none; }
.fa3d__lay.is-off { opacity: 0; }
.fa3d__lay > b { flex: none; position: relative; z-index: 0; display: grid; place-items: center; width: 1.7rem; height: 1.7rem; margin: -.85rem 0 0 -.85rem; font: 600 .56rem/1 var(--cm-f-display); color: var(--cm-ink); }
.fa3d__lay > b::before { content: ""; position: absolute; inset: .28rem; z-index: -1; transform: rotate(45deg); background: var(--cm-orange); box-shadow: 0 0 0 3px rgba(247, 181, 0, .25); }
.fa3d__lay > span { display: grid; gap: .15rem; margin-top: -1.15rem; white-space: nowrap; padding: .42rem .6rem; background: rgba(14, 15, 17, .84); box-shadow: inset 0 0 0 1px var(--cm-line-2); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.fa3d__lay strong { font: 600 .6rem/1.2 var(--cm-f-display); letter-spacing: .14em; text-transform: uppercase; color: var(--cm-bone); }
.fa3d__lay small { font-size: .72rem; line-height: 1.35; color: rgba(243, 240, 232, .72); }

/* curseur de la lampe et de la lance */
.fa3d__cursor { position: absolute; left: 0; top: 0; width: 0; height: 0; opacity: 0; transition: opacity .25s; pointer-events: none; }
.fa3d__cursor.is-on { opacity: 1; }
.fa3d__cursor i { position: absolute; left: -.55rem; top: -.55rem; width: 1.1rem; height: 1.1rem; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--cm-orange), 0 0 0 1px rgba(0, 0, 0, .35); }
.fa3d__cursor i::before, .fa3d__cursor i::after { content: ""; position: absolute; background: var(--cm-orange); }
.fa3d__cursor i::before { left: 50%; top: -.45rem; bottom: -.45rem; width: 1px; transform: translateX(-50%); opacity: .7; }
.fa3d__cursor i::after { top: 50%; left: -.45rem; right: -.45rem; height: 1px; transform: translateY(-50%); opacity: .7; }

/* avant / après */
.fa3d__split { position: absolute; inset: 0; z-index: 3; pointer-events: none; --fa-s: .5; }
.fa3d__split::before { content: ""; position: absolute; top: 0; bottom: 0; left: calc(var(--fa-s) * 100%); width: 2px; margin-left: -1px; background: linear-gradient(180deg, transparent, var(--cm-bone) 12%, var(--cm-bone) 88%, transparent); box-shadow: 0 0 18px rgba(0, 0, 0, .5); }
.fa3d__split-l, .fa3d__split-r { position: absolute; top: 4.4rem; padding: .38rem .6rem; font: 600 .6rem/1 var(--cm-f-display); letter-spacing: .2em; text-transform: uppercase; background: rgba(14, 15, 17, .78); box-shadow: inset 0 0 0 1px var(--cm-line-2); transition: opacity .3s; }
.fa3d__split-l { right: calc((1 - var(--fa-s)) * 100% + .8rem); }
.fa3d__split-r { left: calc(var(--fa-s) * 100% + .8rem); color: var(--cm-orange); }
.fa3d__knob { position: absolute; top: 50%; left: calc(var(--fa-s) * 100%); width: 3rem; height: 3rem; margin: -1.5rem 0 0 -1.5rem; display: flex; align-items: center; justify-content: center; gap: 0; border: 0; border-radius: 50%; background: var(--cm-bone); color: var(--cm-ink); box-shadow: 0 0 0 5px rgba(243, 240, 232, .18), 0 10px 26px -8px rgba(0, 0, 0, .9); cursor: ew-resize; pointer-events: auto; touch-action: none; }
.fa3d__knob svg { width: .95rem; height: .95rem; }
.fa3d__knob:focus-visible { outline: 2px solid var(--cm-orange); outline-offset: 3px; }

/* outils */
.fa3d__tools { position: absolute; left: 1.3rem; bottom: 1.3rem; z-index: 4; display: flex; flex-wrap: wrap; gap: .5rem; max-width: calc(100% - 15rem); }
.fa3d__btn { display: inline-flex; align-items: center; gap: .5rem; min-height: 2.6rem; padding: .45rem .9rem; border: 0; border-radius: 2px; background: rgba(14, 15, 17, .78); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: inset 0 0 0 1px var(--cm-line-2); color: rgba(243, 240, 232, .88); font: 600 .62rem/1 var(--cm-f-display); letter-spacing: .16em; text-transform: uppercase; cursor: pointer; transition: background .3s, color .3s, box-shadow .3s, opacity .3s; }
.fa3d__btn svg { width: 1.1rem; height: 1.1rem; flex: none; }
.fa3d__btn:hover:not(:disabled) { background: var(--cm-zinc-grad); color: var(--cm-ink); box-shadow: none; }
.fa3d__btn:disabled { opacity: .55; cursor: default; }
.fa3d__btn--or { background: var(--cm-orange); color: var(--cm-ink); box-shadow: 0 10px 26px -14px rgba(247, 181, 0, .9); }
.fa3d__btn--or:hover:not(:disabled) { background: var(--cm-orange-2); }
.fa3d__btn.is-off, .fa3d__meter.is-off { display: none; }
.fa3d__btn:focus-visible { outline: 2px solid var(--cm-orange); outline-offset: 2px; }
.fa3d__grab { display: none; }
.fa3d__app.has-tool.is-touch .fa3d__grab { display: inline-flex; }
.fa3d__grab[aria-pressed="true"] { background: var(--cm-orange); color: var(--cm-ink); box-shadow: none; }
.fa3d__ico { display: contents; }
.fa3d__app[data-tool="lance"] .fa3d__ico--l, .fa3d__app:not([data-tool="lance"]) .fa3d__ico--n { display: none; }
.fa3d__meter { position: absolute; right: 1.3rem; bottom: 1.3rem; z-index: 4; display: grid; grid-template-columns: auto auto; align-items: end; gap: .25rem .7rem; padding: .7rem .85rem .75rem; background: rgba(14, 15, 17, .8); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: inset 0 0 0 1px var(--cm-line-2); pointer-events: none; }
.fa3d__meter b { font: 500 2.1rem/.9 var(--cm-f-display); color: var(--cm-bone); font-variant-numeric: tabular-nums; }
.fa3d__meter b small { font-size: .5em; color: var(--cm-orange); margin-left: .1em; }
.fa3d__meter > span { font: 600 .56rem/1.35 var(--cm-f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--cm-zinc); }
.fa3d__meter > i { grid-column: 1 / -1; display: block; height: 2px; background: rgba(243, 240, 232, .14); overflow: hidden; }
.fa3d__meter u { display: block; height: 100%; background: var(--cm-orange); transform: scaleX(0); transform-origin: left; transition: transform .3s; }
.fa3d__hint { position: absolute; z-index: 3; left: 50%; bottom: 1.6rem; display: flex; align-items: center; gap: .6rem; margin: 0; transform: translateX(-50%); font: 500 .6rem/1 var(--cm-f-mono); letter-spacing: .16em; text-transform: uppercase; color: rgba(243, 240, 232, .7); text-shadow: 0 1px 8px rgba(0, 0, 0, .8); white-space: nowrap; pointer-events: none; transition: opacity .5s; }
.fa3d__hint i { position: relative; width: 1.6rem; height: 1px; background: currentColor; }
.fa3d__hint i::after { content: ""; position: absolute; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--cm-orange); animation: fa3d-hint 2.4s var(--cm-ease) infinite; }
@keyframes fa3d-hint { 0%, 100% { left: 0; } 50% { left: calc(100% - 5px); } }
.fa3d__app.is-touched .fa3d__hint, .fa3d__app:not(.is-built) .fa3d__hint, .fa3d__app[data-step="2"] .fa3d__hint, .fa3d__app[data-step="4"] .fa3d__hint { opacity: 0; }

/* ---------- fiche d'expert ---------- */
.fa3d__fiche { position: absolute; z-index: 6; top: 4.2rem; bottom: 1rem; left: 1rem; width: min(24rem, 46%); display: flex; flex-direction: column; border-radius: 3px;
  background: linear-gradient(180deg, rgba(26, 27, 30, .97), rgba(16, 17, 19, .97)); box-shadow: inset 0 0 0 1px var(--cm-line-2), 0 30px 60px -30px rgba(0, 0, 0, .95);
  transform: translateX(calc(-100% - 1.5rem)); visibility: hidden; transition: transform .6s var(--cm-ease), visibility 0s .6s; }
.fa3d__fiche::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: var(--cm-orange); }
.fa3d__fiche.is-open { transform: none; visibility: visible; transition: transform .6s var(--cm-ease), visibility 0s; }
.fa3d__grip { display: none; }
.fa3d__fhead { position: relative; padding: 1.35rem 3.6rem 1.05rem 1.4rem; border-bottom: 1px solid var(--cm-line); }
.fa3d__fn { font: 500 .62rem/1 var(--cm-f-mono); letter-spacing: .16em; text-transform: uppercase; color: var(--cm-orange); }
.fa3d__fhead h3 { margin: .7rem 0 0; font: 600 1.28rem/1.14 var(--cm-f-display); letter-spacing: .03em; text-transform: uppercase; color: var(--cm-bone); text-wrap: balance; }
.fa3d__fx { position: absolute; top: 1rem; right: 1rem; width: 2.3rem; height: 2.3rem; display: grid; place-items: center; border: 0; border-radius: 2px; background: rgba(243, 240, 232, .06); box-shadow: inset 0 0 0 1px var(--cm-line); color: var(--cm-bone); cursor: pointer; transition: background .3s, color .3s; }
.fa3d__fx:hover { background: var(--cm-orange); color: var(--cm-ink); }
.fa3d__fx svg, .fa3d__fnav svg { width: 1rem; height: 1rem; }
.fa3d__fbody { flex: 1; overflow: auto; padding: 1.1rem 1.4rem; display: grid; gap: 1.05rem; align-content: start; overscroll-behavior: contain; }
.fa3d__fbody h4 { margin: 0 0 .42rem; font: 600 .6rem/1 var(--cm-f-display); letter-spacing: .22em; text-transform: uppercase; color: var(--cm-zinc); }
.fa3d__fbody p { margin: 0; font-size: .92rem; line-height: 1.58; color: rgba(243, 240, 232, .86); }
.fa3d__ferr { padding: .85rem .95rem; background: rgba(243, 240, 232, .04); box-shadow: inset 2px 0 0 var(--cm-zinc); }
.fa3d__ferr.is-err { background: rgba(247, 181, 0, .08); box-shadow: inset 2px 0 0 var(--cm-orange); }
.fa3d__ferr.is-err h4 { color: var(--cm-orange-2); }
.fa3d__ffoot { display: flex; align-items: center; justify-content: space-between; gap: .8rem; padding: .9rem 1rem 1rem 1.4rem; border-top: 1px solid var(--cm-line); }
.fa3d__fnav { display: flex; gap: .4rem; }
.fa3d__fiche:not(.has-nav) .fa3d__fnav { display: none; }
.fa3d__fnav button { width: 2.5rem; height: 2.5rem; display: grid; place-items: center; border: 0; border-radius: 2px; background: rgba(243, 240, 232, .06); box-shadow: inset 0 0 0 1px var(--cm-line); color: var(--cm-bone); cursor: pointer; transition: background .3s, color .3s; }
.fa3d__fnav button:hover { background: var(--cm-zinc-grad); color: var(--cm-ink); }
.fa3d__cbtn { display: inline-flex; align-items: center; justify-content: center; gap: .6rem; min-height: 3rem; padding: 0 1.15rem; border-radius: 2px; text-decoration: none; font: 700 .84rem/1.1 var(--cm-f-text); letter-spacing: .01em; transition: background .3s, color .3s, transform .3s var(--cm-ease); }
.fa3d__cbtn svg { width: 1.1rem; height: 1.1rem; flex: none; }
.fa3d__cbtn--or { background: var(--cm-orange); color: var(--cm-ink); box-shadow: 0 10px 26px -14px rgba(247, 181, 0, .9); }
.fa3d__cbtn--or:hover { background: var(--cm-orange-2); transform: translateY(-1px); }

/* ---------- panneau ---------- */
.fa3d__panel { display: flex; flex-direction: column; gap: 1.1rem; padding: 1.4rem 1.3rem 1.3rem; border-radius: 4px; position: relative; background: linear-gradient(180deg, var(--cm-ink-2), #141518); box-shadow: inset 0 0 0 1px var(--cm-line); }
.fa3d__pnum { display: flex; align-items: center; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--cm-line); }
.fa3d__pnum > b { flex: none; position: relative; z-index: 0; display: grid; place-items: center; width: 3.3rem; height: 3.3rem; font: 600 1.05rem/1 var(--cm-f-display); color: var(--cm-ink); }
.fa3d__pnum > b::before { content: ""; position: absolute; inset: .48rem; z-index: -1; transform: rotate(45deg); background: var(--cm-orange); box-shadow: 0 0 0 5px rgba(247, 181, 0, .14); }
.fa3d__pnum > span { display: grid; gap: .35rem; }
.fa3d__pnum small { font: 500 .6rem/1 var(--cm-f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--cm-zinc); }
.fa3d__pnum strong { font: 600 1.32rem/1.1 var(--cm-f-display); letter-spacing: .04em; text-transform: uppercase; }
.fa3d__psous { margin: 0; font: italic 500 1.32rem/1.2 var(--cm-f-serif); color: var(--cm-orange-2); }
.fa3d__ptxt { margin: 0; font-size: .93rem; line-height: 1.6; color: rgba(243, 240, 232, .82); }
.fa3d__ctl { display: grid; gap: .8rem; }
.fa3d__count { display: flex; align-items: baseline; gap: .7rem; }
.fa3d__count > b { font: 500 2.3rem/.9 var(--cm-f-display); color: var(--cm-bone); font-variant-numeric: tabular-nums; }
.fa3d__count > b small { font-size: .5em; color: var(--cm-orange); margin-left: .1em; }
.fa3d__count > span { font: 600 .6rem/1.4 var(--cm-f-display); letter-spacing: .16em; text-transform: uppercase; color: var(--cm-zinc); }
.fa3d__defs { list-style: none; margin: 0; padding: 0; display: grid; gap: .1rem; }
.fa3d__defs button { width: 100%; display: flex; align-items: center; gap: .6rem; min-height: 2.15rem; padding: .25rem .45rem; border: 0; border-radius: 2px; background: transparent; color: rgba(243, 240, 232, .86); font: 500 .84rem/1.2 var(--cm-f-text); text-align: left; cursor: pointer; transition: background .3s, color .3s, opacity .3s; }
.fa3d__defs button b { flex: none; position: relative; z-index: 0; display: grid; place-items: center; width: 1.55rem; height: 1.55rem; font: 600 .52rem/1 var(--cm-f-display); color: var(--cm-orange); }
.fa3d__defs button b::before { content: ""; position: absolute; inset: .24rem; z-index: -1; transform: rotate(45deg); box-shadow: inset 0 0 0 1px rgba(247, 181, 0, .6); transition: background .3s; }
.fa3d__defs button:disabled { opacity: .32; cursor: default; }
.fa3d__defs button:disabled span { filter: blur(2.5px); }
.fa3d__defs button:hover:not(:disabled) { background: rgba(243, 240, 232, .05); color: #fff; }
.fa3d__defs button[aria-pressed="true"] { background: rgba(243, 240, 232, .07); color: #fff; }
.fa3d__defs button[aria-pressed="true"] b { color: var(--cm-ink); }
.fa3d__defs button[aria-pressed="true"] b::before { background: var(--cm-orange); }
.fa3d__bar { height: 2px; background: rgba(243, 240, 232, .12); overflow: hidden; }
.fa3d__bar i { display: block; height: 100%; background: var(--cm-orange); transform: scaleX(0); transform-origin: left; transition: transform .3s; }
.fa3d__ops { display: grid; gap: .45rem; }
.fa3d__op { position: relative; overflow: hidden; display: flex; align-items: flex-start; gap: .8rem; padding: .8rem .85rem .85rem; border: 0; border-radius: 3px; background: rgba(243, 240, 232, .03); box-shadow: inset 0 0 0 1px var(--cm-line); color: var(--cm-bone); text-align: left; cursor: pointer; transition: background .3s, box-shadow .3s; --k: 0; }
.fa3d__op > b { flex: none; position: relative; z-index: 0; display: grid; place-items: center; width: 1.8rem; height: 1.8rem; margin-top: -.1rem; font: 600 .56rem/1 var(--cm-f-display); color: var(--cm-orange); }
.fa3d__op > b::before { content: ""; position: absolute; inset: .3rem; z-index: -1; transform: rotate(45deg); box-shadow: inset 0 0 0 1px rgba(247, 181, 0, .6); transition: background .3s; }
.fa3d__op > span { display: grid; gap: .25rem; }
.fa3d__op strong { font: 600 .66rem/1.2 var(--cm-f-display); letter-spacing: .16em; text-transform: uppercase; }
.fa3d__op small { font-size: .8rem; line-height: 1.45; color: rgba(243, 240, 232, .7); }
.fa3d__op > i { position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--cm-orange); transform: scaleX(var(--k)); transform-origin: left; }
.fa3d__op:hover { background: rgba(243, 240, 232, .06); }
.fa3d__op.is-run { background: rgba(247, 181, 0, .08); box-shadow: inset 0 0 0 1px rgba(247, 181, 0, .5); }
.fa3d__op.is-done > b, .fa3d__op.is-run > b { color: var(--cm-ink); }
.fa3d__op.is-done > b::before, .fa3d__op.is-run > b::before { background: var(--cm-orange); }
.fa3d__op.is-done > i { background: var(--cm-zinc); }
.fa3d__grp { display: grid; gap: .55rem; }
.fa3d__lays { list-style: none; margin: 0; padding: 0 0 .2rem; display: grid; gap: .5rem; border-bottom: 1px solid var(--cm-line); padding-bottom: .9rem; }
.fa3d__lays li { display: flex; gap: .65rem; align-items: flex-start; }
.fa3d__lays b { flex: none; position: relative; z-index: 0; display: grid; place-items: center; width: 1.5rem; height: 1.5rem; margin-top: -.1rem; font: 600 .5rem/1 var(--cm-f-display); color: var(--cm-ink); }
.fa3d__lays b::before { content: ""; position: absolute; inset: .24rem; z-index: -1; transform: rotate(45deg); background: var(--cm-orange); }
.fa3d__lays span { font-size: .8rem; line-height: 1.42; color: rgba(243, 240, 232, .72); }
.fa3d__lays strong { display: block; font: 600 .58rem/1.3 var(--cm-f-display); letter-spacing: .14em; text-transform: uppercase; color: var(--cm-bone); }
.fa3d__lbl { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font: 600 .6rem/1.2 var(--cm-f-display); letter-spacing: .22em; text-transform: uppercase; color: var(--cm-zinc); }
.fa3d__lbl output { font: italic 500 1rem/1 var(--cm-f-serif); letter-spacing: 0; text-transform: none; color: var(--cm-bone); }
.fa3d__seg { display: flex; gap: 2px; padding: 3px; border-radius: 3px; background: rgba(243, 240, 232, .04); box-shadow: inset 0 0 0 1px var(--cm-line); }
.fa3d__seg button { flex: 1; min-height: 2.45rem; padding: 0 .6rem; border: 0; border-radius: 2px; background: transparent; color: rgba(243, 240, 232, .74); font: 600 .62rem/1 var(--cm-f-display); letter-spacing: .14em; text-transform: uppercase; cursor: pointer; white-space: nowrap; transition: background .3s, color .3s; }
.fa3d__seg button:hover { color: #fff; background: rgba(243, 240, 232, .06); }
.fa3d__seg button[aria-pressed="true"] { background: var(--cm-zinc-grad); color: var(--cm-ink); box-shadow: 0 4px 14px -8px rgba(0, 0, 0, .9); }
.fa3d__gtxt { margin: 0; font-size: .82rem; line-height: 1.5; color: rgba(243, 240, 232, .7); }
.fa3d__gtxt--note { font-family: var(--cm-f-serif); font-style: italic; font-size: .98rem; line-height: 1.4; color: rgba(243, 240, 232, .66); }
.fa3d__tints { display: flex; flex-wrap: wrap; gap: .7rem; padding-left: .2rem; }
.fa3d__tints button { width: 2.4rem; height: 2.4rem; padding: 0; border: 0; border-radius: 2px; cursor: pointer; transform: rotate(45deg) scale(.82); background: linear-gradient(135deg, rgba(255, 255, 255, .3), rgba(255, 255, 255, 0) 45%), linear-gradient(315deg, rgba(0, 0, 0, .3), rgba(0, 0, 0, 0) 55%), var(--c, #888); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .16); transition: transform .25s var(--cm-ease), box-shadow .25s; }
.fa3d__tints button:hover { transform: rotate(45deg) scale(.9); }
.fa3d__tints button[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--cm-ink-2), 0 0 0 3.5px var(--cm-orange); }
.fa3d__fopen { display: flex; align-items: center; gap: .85rem; margin-top: auto; padding: .8rem .9rem; border: 0; border-radius: 3px; background: rgba(243, 240, 232, .04); box-shadow: inset 0 0 0 1px var(--cm-line-2); color: var(--cm-bone); text-align: left; cursor: pointer; transition: background .3s, box-shadow .3s; }
.fa3d__fopen > svg:first-child { width: 1.3rem; height: 1.3rem; color: var(--cm-orange); flex: none; }
.fa3d__fopen > svg:last-child { width: 1rem; height: 1rem; margin-left: auto; flex: none; color: var(--cm-zinc); transition: transform .3s var(--cm-ease); }
.fa3d__fopen > span { display: grid; gap: .25rem; }
.fa3d__fopen small { font: 500 .58rem/1 var(--cm-f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--cm-orange); }
.fa3d__fopen strong { font: 600 .74rem/1.2 var(--cm-f-display); letter-spacing: .12em; text-transform: uppercase; }
.fa3d__fopen:hover { background: rgba(247, 181, 0, .08); box-shadow: inset 0 0 0 1px rgba(247, 181, 0, .5); }
.fa3d__fopen:hover > svg:last-child { transform: translateX(3px); }
.fa3d__nav { display: grid; grid-template-columns: auto 1fr; gap: .45rem; }
.fa3d__nav button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 3rem; padding: 0 1rem; border: 0; border-radius: 2px; font: 600 .66rem/1 var(--cm-f-display); letter-spacing: .16em; text-transform: uppercase; cursor: pointer; transition: background .3s, color .3s, opacity .3s, box-shadow .3s; }
.fa3d__nav svg { width: 1rem; height: 1rem; flex: none; }
.fa3d__prev { background: rgba(243, 240, 232, .05); color: var(--cm-bone); box-shadow: inset 0 0 0 1px var(--cm-line); }
.fa3d__prev:hover:not(:disabled) { background: var(--cm-zinc-grad); color: var(--cm-ink); }
.fa3d__next { justify-content: space-between !important; background: transparent; color: var(--cm-orange); box-shadow: inset 0 0 0 1px var(--cm-orange); }
.fa3d__next:hover:not(:disabled), .fa3d__next.is-ready { background: var(--cm-orange); color: var(--cm-ink); }
.fa3d__nav button:disabled { opacity: .4; cursor: default; }
.fa3d__ctas { display: grid; gap: .5rem; padding-top: 1rem; border-top: 1px solid var(--cm-line); }
.fa3d__cbtn--bone { justify-content: space-between; background: var(--cm-bone); color: var(--cm-ink); }
.fa3d__cbtn--bone:hover { background: #fff; }
.fa3d__cbtn--bone i { display: grid; place-items: center; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--cm-orange); transition: transform .4s var(--cm-ease); }
.fa3d__cbtn--bone i svg { width: .9rem; height: .9rem; }
.fa3d__cbtn--bone:hover i { transform: rotate(45deg); }
.fa3d__tel { display: inline-flex; align-items: center; justify-content: center; gap: .6rem; min-height: 2.9rem; border-radius: 2px; box-shadow: inset 0 0 0 1px var(--cm-line); color: var(--cm-bone); font: 500 .95rem/1 var(--cm-f-mono); letter-spacing: .06em; text-decoration: none; transition: box-shadow .3s, color .3s; }
.fa3d__tel:hover { box-shadow: inset 0 0 0 1px var(--cm-orange); color: var(--cm-orange); }
.fa3d__tel svg { width: 1.05rem; height: 1.05rem; color: var(--cm-orange); }
.fa3d button:focus-visible, .fa3d a:focus-visible { outline: 2px solid var(--cm-orange); outline-offset: 2px; }

/* ---------- tablette et mobile ---------- */
@media (max-width: 1099px) {
  .fa3d__head { grid-template-columns: 1fr; }
  .fa3d__app { grid-template-columns: minmax(0, 1fr); }
  .fa3d__stage { min-height: 0; aspect-ratio: 16 / 11; }
  .fa3d__panel { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.6rem; align-items: start; }
  .fa3d__pnum, .fa3d__psous, .fa3d__ptxt { grid-column: 1; }
  .fa3d__ctl { grid-column: 2; grid-row: 1 / span 4; }
  .fa3d__fopen, .fa3d__nav { grid-column: 1; }
  .fa3d__ctas { grid-column: 1 / -1; grid-template-columns: 1fr 1fr; }
}
@media (max-width: 759px) {
  .fa3d__head { gap: 1.2rem; }
  .fa3d__wrap { width: calc(100% - 2rem); }
  .fa3d__stage { aspect-ratio: auto; height: min(118vw, 72svh); margin-inline: -.5rem; }
  .fa3d__frame { inset: .45rem; }
  .fa3d__steps { top: .75rem; left: .8rem; right: .8rem; gap: .25rem; }
  .fa3d__steps button { padding: .62rem 0 .3rem; font-size: .56rem; letter-spacing: .06em; gap: .3rem; }
  .fa3d__steps button span { display: none; }
  .fa3d__steps button.is-on span { display: inline; }
  .fa3d__tag { top: 3.1rem; right: .8rem; font-size: .5rem; }
  .fa3d__tools { left: .7rem; right: .7rem; bottom: .7rem; max-width: none; }
  .fa3d__btn { min-height: 2.75rem; padding: .45rem .75rem; font-size: .58rem; }
  .fa3d__meter { right: .7rem; bottom: 4rem; padding: .55rem .7rem .6rem; }
  .fa3d__meter b { font-size: 1.6rem; }
  .fa3d__hint { bottom: 4.2rem; font-size: .52rem; }
  .fa3d__pin { height: 1.8rem; margin: -.9rem 0 0 -.9rem; }
  .fa3d__pin b { width: 1.8rem; height: 1.8rem; }
  .fa3d__pin > span { display: none; }
  .fa3d__lay > span { display: none; }
  .fa3d__split-l, .fa3d__split-r { top: 3.2rem; }
  /* fiche en tiroir */
  .fa3d__fiche { top: auto; left: .4rem; right: .4rem; bottom: .4rem; width: auto; max-height: 64%; transform: translateY(calc(100% + 1rem)); border-radius: 10px 10px 4px 4px; }
  .fa3d__fiche::before { border-radius: 10px 10px 0 0; }
  .fa3d__grip { display: block; position: absolute; top: .45rem; left: 50%; width: 2.6rem; height: .3rem; margin-left: -1.3rem; border-radius: 1rem; background: rgba(243, 240, 232, .25); cursor: pointer; }
  .fa3d__fhead { padding: 1.15rem 3.3rem .8rem 1.1rem; }
  .fa3d__fhead h3 { font-size: 1.04rem; margin-top: .5rem; }
  .fa3d__fx { top: .8rem; right: .75rem; }
  .fa3d__fbody { padding: .85rem 1.1rem; gap: .8rem; }
  .fa3d__fbody p { font-size: .88rem; }
  .fa3d__ffoot { padding: .65rem .75rem .75rem 1.1rem; }
  .fa3d__ffoot .fa3d__cbtn { min-height: 2.7rem; font-size: .78rem; padding: 0 .85rem; }
  .fa3d__panel { display: flex; padding: 1.15rem 1rem 1rem; }
  .fa3d__ctas { grid-template-columns: 1fr; }
  .fa3d__pnum strong { font-size: 1.12rem; }
}
@media (prefers-reduced-motion: reduce) {
  .fa3d__pin b::after, .fa3d__hint i::after, .fa3d__load svg, .fa3d__pin.is-new b::before { animation: none; }
  .fa3d__load svg { stroke-dashoffset: 0; }
  .fa3d__fiche, .fa3d__fiche.is-open, .fa3d__pin > span, .fa3d__stage > canvas, .fa3d__steps button::after { transition: none; }
}