/* ========================================================================
   Image Preview Modal (统一：上传图片/缩略图点击预览)
   说明：为未引入 static/css/tushengtu-merged.css 的页面提供同款预览弹窗样式
   ======================================================================== */

.image-preview-modal .modal-dialog {
  max-width: min(1100px, 92vw) !important;
  margin: 1.75rem auto !important;
}

.image-preview-modal .modal-content {
  pointer-events: auto !important;
  background: rgba(255, 255, 255, 0.92) !important;
  backdrop-filter: blur(18px) !important;
  -webkit-backdrop-filter: blur(18px) !important;
  border: 1px solid rgba(0, 0, 0, 0.06) !important;
  border-radius: 24px !important;
  overflow: hidden !important;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.18) !important;
}

.image-preview-modal .modal-header {
  height: 56px !important;
  padding: 0 18px !important;
  background: rgba(255, 255, 255, 0.88) !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
}

.image-preview-modal .modal-title {
  margin: 0 !important;
  font-size: 13px !important;
  font-weight: 800 !important;
  letter-spacing: 0.12em !important;
  text-transform: uppercase !important;
  color: rgba(0, 0, 0, 0.55) !important;
}

.image-preview-modal .btn-close,
.image-preview-modal .btn-close.btn-close-white {
  filter: none !important;
  opacity: 0.55 !important;
}
.image-preview-modal .btn-close:hover,
.image-preview-modal .btn-close.btn-close-white:hover {
  opacity: 0.85 !important;
}

.image-preview-modal .modal-body {
  padding: 16px 18px 18px 18px !important;
  background: transparent !important;
}

.image-preview-modal .image-preview-wrapper {
  position: relative !important;
  width: 100% !important;
  height: min(70vh, 680px) !important;
  border-radius: 18px !important;
  overflow: hidden !important;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(45, 19, 80, 0.25), transparent 55%),
              radial-gradient(900px 450px at 90% 20%, rgba(124, 58, 237, 0.20), transparent 55%),
              #0b0b12 !important;
  border: 1px solid rgba(0, 0, 0, 0.06) !important;
}

.image-preview-modal .image-preview-wrapper img {
  max-width: 100% !important;
  max-height: 100% !important;
  object-fit: contain !important;
  user-select: none !important;
  cursor: grab !important;
  transition: transform 0.05s ease-out !important;
}
.image-preview-modal .image-preview-wrapper img.grabbing {
  cursor: grabbing !important;
}

.image-preview-modal .image-preview-hint {
  position: absolute !important;
  top: 12px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  background: rgba(255, 255, 255, 0.14) !important;
  color: rgba(255, 255, 255, 0.92) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  backdrop-filter: blur(10px) !important;
  -webkit-backdrop-filter: blur(10px) !important;
  padding: 8px 12px !important;
  border-radius: 999px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
}

.image-preview-modal .image-preview-controls {
  position: absolute !important;
  bottom: 12px !important;
  right: 12px !important;
  display: flex !important;
  gap: 10px !important;
}

.image-preview-modal .image-preview-controls button,
.image-preview-modal .image-preview-controls .btn {
  width: 42px !important;
  height: 42px !important;
  border-radius: 999px !important;
  border: 1px solid rgba(255, 255, 255, 0.16) !important;
  background: rgba(255, 255, 255, 0.12) !important;
  color: rgba(255, 255, 255, 0.92) !important;
  backdrop-filter: blur(10px) !important;
  -webkit-backdrop-filter: blur(10px) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  box-shadow: 0 10px 28px rgba(0,0,0,0.30) !important;
  transition: transform 0.12s ease, background-color 0.18s ease, border-color 0.18s ease !important;
}

.image-preview-modal .image-preview-controls button:hover,
.image-preview-modal .image-preview-controls .btn:hover {
  transform: translateY(-1px) !important;
  background: rgba(255, 255, 255, 0.18) !important;
  border-color: rgba(255, 255, 255, 0.26) !important;
}

.image-preview-modal .image-preview-controls button:active,
.image-preview-modal .image-preview-controls .btn:active {
  transform: translateY(0) scale(0.98) !important;
}