/* =========================================================
   mg-viewer.css — 360° / multi-view product viewer
   Frame-array driven. Supports 2, 3, 4… N views.
   ========================================================= */

.mug360 {
  position: relative;
  width: 100%;
  background: var(--stage);
  border: 1px solid var(--rule);
  touch-action: pan-y;         /* vertical drag scrolls page; horizontal rotates */
  user-select: none;
  -webkit-user-select: none;
  overflow: hidden;
}

/* ---- Primary image (no-JS fallback: still a real <img>) ---- */
.mug360__stage {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--stage);
}
.mug360__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform-origin: center;
  transition: opacity .15s ease;
}
.mug360__img.is-loading { opacity: .35; }

/* ---- View rail (static, pre-rendered thumbnails) ---- */
.mug360__rail {
  display: flex;
  gap: 8px;
  padding: 10px;
  overflow-x: auto;
  border-top: 1px solid var(--rule);
  background: var(--ink);
}
.mug360__rail-btn {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--stage);
  border-radius: var(--r-1);
  padding: 2px;
  cursor: pointer;
  flex: 0 0 auto;
}
.mug360__rail-btn img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  display: block;
}
.mug360__rail-btn:hover { border-color: var(--chalk); }
.mug360__rail-btn[aria-current="true"] { border-color: var(--chalk); box-shadow: 0 0 0 1px var(--chalk); }

/* ---- Overlay chrome ---- */
.mug360__bar {
  position: absolute;
  top: 8px;
  right: 8px;
  display: flex;
  gap: 6px;
  z-index: 10;
}
.mug360__btn {
  appearance: none;
  border: 1px solid var(--rule);
  background: rgba(21,24,27,.85);
  color: var(--paper);
  font: 500 var(--text-xs) var(--font-data);
  padding: 6px 10px;
  border-radius: var(--r-1);
  cursor: pointer;
  min-width: 36px;
  line-height: 1.2;
}
.mug360__btn:hover { border-color: var(--chalk); color: var(--chalk); }
.mug360__btn[aria-pressed="true"] { background: var(--chalk); color: var(--ink); border-color: var(--chalk); }

.mug360__readout {
  position: absolute;
  left: 8px;
  bottom: 8px;
  font-family: var(--font-data);
  font-size: var(--text-xs);
  color: var(--paper);
  background: rgba(21,24,27,.85);
  border: 1px solid var(--rule);
  border-radius: var(--r-1);
  padding: 4px 8px;
  letter-spacing: .04em;
  z-index: 10;
  pointer-events: none;
}
.mug360__readout b { color: var(--chalk); font-weight: 600; }

.mug360__hint {
  position: absolute;
  left: 50%;
  top: 10px;
  transform: translateX(-50%);
  font: 500 var(--text-xs) var(--font-body);
  color: var(--muted);
  background: rgba(21,24,27,.85);
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 5px 12px;
  z-index: 10;
  pointer-events: none;
  white-space: nowrap;
  transition: opacity .3s ease;
}

.mug360__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(231,232,228,.08);
  z-index: 11;
}
.mug360__progress > span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--chalk);
  transition: width .2s ease;
}

/* ---- Zoom mode ---- */
.mug360.is-zoomed .mug360__img {
  cursor: zoom-out;
  will-change: transform;
}
.mug360.is-zoomed { cursor: zoom-out; }
.mug360 .mug360__img { cursor: zoom-in; }

/* ---- Fullscreen ---- */
.mug360.is-fullscreen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 3000;
  border: 0;
  background: var(--ink);
}
.mug360.is-fullscreen .mug360__stage { max-width: none; }
.mug360.is-fullscreen .mug360__img { object-fit: contain; }

/* ---- Swatch / colourway switcher ---- */
.mug360__swatches {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid var(--rule);
}
.mug360__swatch {
  appearance: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 4px 10px;
  font: 500 var(--text-xs) var(--font-data);
  color: var(--paper);
  background: var(--stage);
  cursor: pointer;
  text-transform: uppercase;
}
.mug360__swatch:hover { border-color: var(--chalk); }
.mug360__swatch[aria-pressed="true"] { background: var(--chalk); color: var(--ink); border-color: var(--chalk); }

/* ---- Dragging states ---- */
.mug360.is-dragging { cursor: grabbing; touch-action: none; }
.mug360.is-dragging .mug360__hint { opacity: 0; }

/* ---- Reduced motion: no transitions, no auto-spin ---- */
@media (prefers-reduced-motion: reduce) {
  .mug360__img { transition: none; }
  .mug360 .mug360__img { cursor: pointer; }
}