/* 原 styles.css L2598-L2994 连续区间纯移动（UI 重构阶段 A）。内容：预览面板/图片编辑层/拼图。层叠顺序由 01→12 的 <link> 顺序保持。 */
.page-frame {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-card);
}

.page-frame canvas {
  display: block;
  width: 100%;
  height: auto;
}

.preview-image-edit-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.preview-image-box {
  position: absolute;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: grab;
  touch-action: none;
  pointer-events: auto;
}

.preview-image-box:active {
  cursor: grabbing;
}

.preview-image-box.is-dragging {
  z-index: 7;
  border-color: var(--active-border);
  background: rgba(37, 99, 235, 0.08);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.18);
  opacity: 0.38;
  will-change: transform;
}

.preview-image-drop-line {
  position: absolute;
  right: 4.8%;
  left: 4.8%;
  z-index: 6;
  height: 3px;
  border-radius: 999px;
  background: var(--active-border);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--active-border) 18%, transparent);
  pointer-events: none;
}

.preview-image-drop-line::before {
  position: absolute;
  top: 50%;
  left: -4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--active-border);
  content: "";
  transform: translateY(-50%);
}

.preview-image-box:hover,
.preview-image-box:focus-within,
.preview-image-box.is-resizing {
  border-color: var(--active-border);
  background: rgba(37, 99, 235, 0.06);
}

.preview-image-box.is-live {
  background: #05070b;
}

.preview-image-box.is-selected {
  z-index: 5;
  border-color: var(--active-border);
  outline: 2px solid color-mix(in srgb, var(--active-border) 52%, transparent);
  outline-offset: 2px;
  background: rgba(37, 99, 235, 0.08);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--active-border) 12%, transparent), 0 12px 30px rgba(15, 23, 42, 0.18);
}

.preview-image-box.is-selected .preview-image-align,
.preview-image-box.is-selected .preview-image-crop {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.preview-image-box.is-selected .preview-image-crop {
  transform: translateY(0);
}

.preview-live-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 7px;
  object-fit: cover;
  pointer-events: none;
}

.preview-live-badge {
  position: absolute;
  left: 8px;
  bottom: 8px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 7px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  color: #fff;
  background: rgba(5, 8, 14, 0.58);
  backdrop-filter: blur(7px);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.preview-live-badge svg {
  width: 12px;
  height: 12px;
}

.preview-image-align {
  position: absolute;
  top: 8px;
  left: 50%;
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--popover-bg);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateX(-50%) translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: auto;
}

.preview-image-box:hover .preview-image-align,
.preview-image-box:focus-within .preview-image-align,
.preview-image-box.is-resizing .preview-image-align {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.preview-image-box:hover .preview-image-crop,
.preview-image-box:focus-within .preview-image-crop,
.preview-image-box.is-resizing .preview-image-crop {
  opacity: 1;
  transform: translateY(0);
}

/* 拼图加号：悬停图片时出现在右缘中部 */
.preview-image-pair {
  position: absolute;
  top: 50%;
  right: 8px;
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--control-text);
  background: var(--popover-bg);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(-50%) translateX(4px);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: auto;
}

.preview-image-pair:hover {
  color: var(--active-text);
  background: var(--active-bg);
}

.preview-image-box:hover .preview-image-pair,
.preview-image-box:focus-within .preview-image-pair,
.preview-image-box.is-selected .preview-image-pair {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* 拼图块：悬停显示“调整拼图”标识，点击打开调整弹窗 */
.preview-pair-box {
  cursor: pointer;
}

.preview-pair-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--control-text);
  background: var(--popover-bg);
  box-shadow: var(--shadow-soft);
  font-size: 12px;
  font-weight: 700;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: none;
}

.preview-pair-badge svg {
  width: 14px;
  height: 14px;
}

.preview-pair-box:hover .preview-pair-badge,
.preview-pair-box:focus-visible .preview-pair-badge {
  opacity: 1;
  transform: translateY(0);
}

/* 拼图调整弹窗 */
.pair-modal-card {
  width: min(760px, 100%);
}

.pair-editor {
  display: grid;
  grid-template-columns: 1fr 200px;
  min-height: 0;
}

.pair-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 22px;
  background: #111827;
  overflow: auto;
}

.pair-cell {
  display: grid;
  gap: 10px;
  justify-items: center;
}

.pair-cell-actions {
  display: flex;
  gap: 8px;
}

.pair-cell-actions .secondary-button {
  padding-inline: 10px;
}

.pair-cell canvas {
  display: block;
  border-radius: 8px;
  background: #0b1020;
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.45);
}

.pair-controls {
  display: grid;
  align-content: space-between;
  gap: 20px;
  padding: 18px;
  border-left: 1px solid var(--line);
  background: var(--panel-bg, #fbfcfe);
}

.pair-actions {
  display: grid;
  gap: 10px;
}

@media (max-width: 720px) {
  .pair-editor {
    grid-template-columns: 1fr;
  }

  .pair-controls {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

.preview-image-align button {
  display: inline-flex;
  width: 24px;
  height: 22px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--control-text);
  background: transparent;
}

.preview-image-align button:hover {
  color: var(--active-text);
  background: var(--active-bg);
}

.preview-image-align svg {
  width: 15px;
  height: 15px;
}

.preview-image-crop {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--control-text);
  background: var(--popover-bg);
  box-shadow: var(--shadow-soft);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: auto;
}

.preview-image-crop:hover {
  color: var(--active-text);
  background: var(--active-bg);
}

.preview-image-crop svg {
  width: 17px;
  height: 17px;
}

.preview-image-resize {
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 20px;
  height: 20px;
  border: 2px solid var(--paper);
  border-radius: 999px;
  background: var(--active-border);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.22);
  cursor: nwse-resize;
  pointer-events: auto;
}

.page-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.page-actions button {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--control-text);
  background: var(--control-bg);
}

.empty-state {
  padding: 48px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}