/* Palais Vivienne — visite 3D : styles de l'UI interne à #scene3d-container */
.s3d {
  --s3d-or: #c9a86a;
  --s3d-or-sombre: #9a7b45;
  --s3d-creme: #f5f1e7;
  --s3d-noir: #1f1b17;
  position: relative;
  overflow: hidden;
  background: var(--s3d-noir);
  color: var(--s3d-creme);
  font-family: 'Jost', system-ui, sans-serif;
  user-select: none;
  -webkit-user-select: none;
}
.s3d-canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; display: block; touch-action: none; }
.s3d-vignette {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 55%, rgba(31, 27, 23, .55) 100%),
    linear-gradient(to bottom, rgba(31, 27, 23, .35), transparent 22%, transparent 70%, rgba(31, 27, 23, .6));
}

/* --- overlay mode scroll --- */
.s3d-ui {
  position: absolute; inset: 0; pointer-events: none;
  display: grid; grid-template-rows: 1fr auto auto; padding: clamp(20px, 4vw, 48px);
}
.s3d-room { align-self: end; justify-self: start; display: flex; align-items: baseline; gap: .9rem; margin-bottom: 1.4rem; }
.s3d-room__num {
  font-size: .7rem; letter-spacing: .28em; color: var(--s3d-or-sombre); text-transform: uppercase;
  padding-bottom: .2rem; border-bottom: 1px solid var(--s3d-or-sombre);
}
.s3d-room__name {
  font-family: 'Bodoni Moda', 'Didot', Georgia, serif; font-style: italic; font-weight: 400;
  font-size: clamp(1.8rem, 4vw, 3.2rem); line-height: 1; color: var(--s3d-or);
  text-shadow: 0 2px 24px rgba(0, 0, 0, .5);
}
.s3d-room__name.is-swap { animation: s3d-swap .7s cubic-bezier(.2, .7, .2, 1); }
@keyframes s3d-swap { from { opacity: 0; transform: translateY(.35em); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }

.s3d-progress {
  position: relative; grid-row: 2; justify-self: stretch; height: 1px; margin: 0 0 1.6rem;
  background: rgba(201, 168, 106, .25); display: flex; justify-content: space-between; align-items: center;
}
.s3d-progress__bar { position: absolute; left: 0; top: 0; height: 1px; width: 100%; background: var(--s3d-or); transform-origin: left; transform: scaleX(0); }
.s3d-progress i {
  position: relative; width: 7px; height: 7px; border-radius: 50%; border: 1px solid var(--s3d-or-sombre);
  background: var(--s3d-noir); transition: background .5s, box-shadow .5s;
}
.s3d-progress i.is-on { background: var(--s3d-or); box-shadow: 0 0 12px rgba(201, 168, 106, .7); }

.s3d-enter, .s3d-quit {
  pointer-events: auto; cursor: pointer; appearance: none;
  font: 500 .72rem/1 'Jost', system-ui, sans-serif; letter-spacing: .26em; text-transform: uppercase;
  color: var(--s3d-or); background: rgba(31, 27, 23, .45); border: 1px solid var(--s3d-or);
  padding: 1.05rem 2rem; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background .35s, color .35s, box-shadow .35s, transform .35s;
}
.s3d-enter { grid-row: 3; grid-column: 1; justify-self: center; margin-top: .4rem; }
.s3d-enter:hover, .s3d-quit:hover { background: var(--s3d-or); color: var(--s3d-noir); box-shadow: 0 0 32px rgba(201, 168, 106, .45); }
.s3d-enter:focus-visible, .s3d-quit:focus-visible { outline: 1px solid var(--s3d-creme); outline-offset: 4px; }
@media (min-width: 760px) {
  .s3d-ui { grid-template-columns: 1fr auto; grid-template-rows: 1fr auto; column-gap: 3rem; }
  .s3d-room { grid-column: 1 / -1; }
  .s3d-progress { grid-column: 1; grid-row: 2; margin: 0; align-self: center; }
  .s3d-enter { grid-column: 2; grid-row: 2; margin: 0; }
}

/* --- mode libre --- */
.s3d--free { position: fixed !important; inset: 0 !important; z-index: 9999 !important; height: 100vh !important; height: 100dvh !important; min-height: 0 !important; }
.s3d--free .s3d-ui { opacity: 0; transition: opacity .4s; }
.s3d--free .s3d-vignette { opacity: .7; }
html.s3d-locked, html.s3d-locked body { overflow: hidden !important; }

.s3d-hint {
  position: absolute; left: 50%; bottom: clamp(24px, 6vh, 64px); transform: translate(-50%, 12px);
  font-size: .7rem; letter-spacing: .24em; text-transform: uppercase; color: var(--s3d-creme);
  padding: .9rem 1.6rem; border: 1px solid rgba(201, 168, 106, .4); background: rgba(31, 27, 23, .55);
  opacity: 0; pointer-events: none; transition: opacity .8s, transform .8s; white-space: nowrap; max-width: 92vw;
  text-align: center;
}
.s3d-hint.is-visible { opacity: 1; transform: translate(-50%, 0); }
.s3d-quit { position: absolute; top: clamp(16px, 3vw, 32px); right: clamp(16px, 3vw, 32px); display: none; }
.s3d--free .s3d-quit { display: block; }
.s3d--free .s3d-quit::before { content: '× '; }
.s3d-touch { display: none; }
@media (pointer: coarse) {
  .s3d--free .s3d-touch { display: block; position: absolute; inset: 0; pointer-events: none; }
  .s3d-joy {
    position: absolute; right: 7vw; bottom: 9vh; width: 124px; height: 124px; border-radius: 50%; pointer-events: auto; touch-action: none;
    border: 1px solid rgba(201, 168, 106, .6); background: radial-gradient(circle, rgba(31, 27, 23, .55), rgba(31, 27, 23, .15));
  }
  .s3d-joy__knob {
    position: absolute; left: 50%; top: 50%; width: 46px; height: 46px; margin: -23px 0 0 -23px; border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #e3c98f, var(--s3d-or-sombre)); box-shadow: 0 4px 18px rgba(0, 0, 0, .5);
  }
  .s3d-hint { white-space: normal; }
}

/* --- chargement & repli --- */
.s3d-loader {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; align-items: center; gap: .8rem; font-size: .68rem; letter-spacing: .26em; text-transform: uppercase;
  color: var(--s3d-or); pointer-events: none; transition: opacity .8s;
}
.s3d-loader span { width: 34px; height: 1px; background: var(--s3d-or); animation: s3d-pulse 1.4s ease-in-out infinite; }
@keyframes s3d-pulse { 0%, 100% { transform: scaleX(.2); opacity: .4; } 50% { transform: scaleX(1); opacity: 1; } }
.s3d-loader.is-done { opacity: 0; }
.s3d--fallback .s3d-vignette { background: linear-gradient(to bottom, rgba(31, 27, 23, .3), rgba(31, 27, 23, .75)); }
.s3d-fallback__msg {
  grid-row: 1 / -1; grid-column: 1 / -1; align-self: center; justify-self: center; margin: 0;
  font-family: 'Bodoni Moda', Georgia, serif; font-style: italic; font-size: clamp(1.2rem, 2.6vw, 1.8rem); color: var(--s3d-creme);
  text-align: center; text-shadow: 0 2px 20px rgba(0, 0, 0, .6);
}

@media (prefers-reduced-motion: reduce) {
  .s3d-room__name.is-swap { animation: none; }
  .s3d-loader span { animation: none; }
}