.spin-viewer {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #0a0a0a;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  overflow: hidden;
  touch-action: none;
}
.spin-viewer.dragging { cursor: grabbing; }
.spin-viewer:has(.spin-viewer-loading:not(.hidden)) { cursor: wait; }
.spin-viewer:has(.spin-viewer-loading:not(.hidden)) .spin-viewer-hint { opacity: 0; }

.spin-viewer-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
  -webkit-user-drag: none;
}

.spin-viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: opacity 0.3s ease;
  z-index: 2;
}
.spin-viewer-loading.hidden { opacity: 0; pointer-events: none; }

.spin-viewer-spinner {
  width: 36px;
  height: 36px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: #FE4040;
  border-radius: 50%;
  animation: spin-viewer-rotate 0.9s linear infinite;
}
@keyframes spin-viewer-rotate {
  to { transform: rotate(360deg); }
}

.spin-viewer-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.spin-viewer-progress-bar {
  width: 160px;
  height: 3px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
}
.spin-viewer-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #FE4040 0%, #ff7070 100%);
  border-radius: 999px;
  transition: width 0.15s ease-out;
}
.spin-viewer-progress-text {
  color: rgba(255,255,255,0.7);
  font-family: sans-serif;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
}

.spin-viewer-error {
  color: rgb(255,120,120);
  font-family: sans-serif;
  font-size: 13px;
  padding: 12px 16px;
  text-align: center;
  max-width: 80%;
}

.spin-viewer-hint {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  padding: 7px 14px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: rgba(255,255,255,0.85);
  font-family: sans-serif;
  font-size: 11.5px;
  letter-spacing: 0.4px;
  border-radius: 999px;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.5s ease, transform 0.5s ease;
  z-index: 3;
}
.spin-viewer-hint.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(6px);
}