/* ===== 图片查看器 ===== */
.viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 12, 12, 0.92);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  user-select: none;
}
.viewer-overlay.show { display: flex; }

.viewer-stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: grab;
}
.viewer-stage.dragging { cursor: grabbing; }

.viewer-img {
  max-width: 90%;
  max-height: 90%;
  transform-origin: center center;
  transition: transform 0.1s ease-out;
  will-change: transform;
  pointer-events: none;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.viewer-img.no-transition { transition: none; }

.viewer-toolbar {
  position: absolute;
  top: 18px;
  right: 18px;
  display: flex;
  gap: 8px;
  z-index: 10;
}
.viewer-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 20px;
  transition: all 0.2s;
  backdrop-filter: blur(4px);
}
.viewer-btn:hover { background: rgba(255,255,255,0.25); }
.viewer-btn.close:hover { background: var(--red); }
.viewer-btn.delete:hover { background: var(--red); }

.viewer-info {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 10;
}
.viewer-info .scale-val { font-variant-numeric: tabular-nums; min-width: 48px; text-align: center; }
.viewer-info .divider { width: 1px; height: 14px; background: rgba(255,255,255,0.3); }
.viewer-info .hint { color: rgba(255,255,255,0.6); font-size: 12px; }

@media (max-width: 768px) {
  .viewer-info {
    padding: 6px 14px;
    font-size: 12px;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: calc(100% - 32px);
  }
  .viewer-info .hint {
    display: none;
  }
}

.viewer-controls {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
}

.viewer-name {
  position: absolute;
  top: 18px;
  left: 18px;
  color: #fff;
  font-size: 14px;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: 20px;
  z-index: 10;
  max-width: 50%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}