/* Canvas Studio - 全屏画布编辑器 */
#canvasContainer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  top: 140px;
  background: #fafafa;
  background-image: radial-gradient(circle, #d4d4d8 1px, transparent 1px);
  background-size: 24px 24px;
  overflow: hidden;
}
#fabricCanvas { display: block; }
#canvasContainer .canvas-container {
  width: 100% !important;
  height: 100% !important;
}
#canvasContainer canvas {
  -webkit-touch-callout: none;
}
.canvas-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 0 16px;
  pointer-events: none;
}
.canvas-empty-hint {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  pointer-events: auto;
  max-width: 100%;
}
.canvas-empty-hint--actions {
  flex-wrap: wrap;
}
.canvas-empty-chip,
.canvas-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  box-sizing: border-box;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1;
  font-family: inherit;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}
.canvas-empty-chip {
  background: #fff;
  color: #52525b;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.canvas-empty-chip svg {
  color: #18181b;
  flex-shrink: 0;
}
.canvas-empty-caption {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin: 0;
  padding: 0 4px;
  font-size: 14px;
  line-height: 1;
  color: #71717a;
  user-select: none;
}
.canvas-btn {
  border: 1px solid #e4e4e7;
  background: #fff;
  color: #3f3f46;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  transition: border-color 0.15s, background 0.15s;
  margin: 0;
  vertical-align: middle;
  -webkit-appearance: none;
  appearance: none;
}
label.canvas-btn {
  margin: 0;
}
.canvas-btn svg {
  color: #71717a;
  flex-shrink: 0;
}
.canvas-btn:hover { border-color: #d4d4d8; background: #fafafa; }
.canvas-btn:disabled {
  color: #a1a1aa;
  border-color: #f4f4f5;
  cursor: not-allowed;
  background: #fff;
}
.canvas-btn:disabled svg {
  opacity: 0.45;
}
.canvas-btn:disabled:hover { background: #fff; border-color: #f4f4f5; }
.toolbar-corner {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toolbar-corner-btn {
  width: 32px;
  height: 32px;
  border: 1px solid #e4e4e7;
  background: rgba(255,255,255,0.95);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  color: #52525b;
  transition: background 0.15s;
}
.toolbar-corner-btn:hover { background: #f4f4f5; }
.toolbar-corner-btn-zoom {
  height: 32px;
  padding: 0 12px;
  background: #18181b;
  border: none;
  border-radius: 14px;
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.toolbar-floating {
  position: fixed;
  inset: auto auto 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
}
.toolbar-floating-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: rgba(255,255,255,0.95);
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15,23,42,0.12);
  backdrop-filter: blur(8px);
}
.tool-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: transparent;
  color: #71717a;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tool-btn:hover { background: #f4f4f5; }
.tool-btn.active { background: #18181b; color: #fff; }

/* 右键菜单 */
.ctx-menu {
  display: none;
  position: fixed;
  z-index: 9999;
  min-width: 220px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  padding: 6px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.ctx-menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: #18181b;
  cursor: pointer;
  transition: background 0.1s;
  user-select: none;
}
.ctx-menu-label { flex: 1; min-width: 0; }
.ctx-menu-kbd {
  flex-shrink: 0;
  font-size: 12px;
  color: #a1a1aa;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.ctx-menu-kbd-icon {
  font-size: 14px;
  color: #ef4444;
}
.ctx-menu-item:hover { background: #f4f4f5; }
.ctx-menu-item.is-disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: default;
}
.ctx-menu-item-danger .ctx-menu-label { color: #ef4444; }
.ctx-menu-item-danger:hover { background: #fef2f2; }
.ctx-menu-image-block[hidden],
.ctx-menu-canvas-block[hidden] { display: none !important; }
.ctx-menu-divider { height: 1px; background: #f0f0f0; margin: 4px 8px; }

/* 图片选中浮动工具栏 */
.image-obj-toolbar {
  position: fixed;
  z-index: 20;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 12px)) scale(var(--ui-scale, 1));
  transform-origin: bottom center;
}
.image-obj-toolbar[hidden] { display: none !important; }
#imageSplitToolbar { display: none !important; }
#imageObjectToolbar.is-split-mode #imageObjectToolbarDefault { display: none !important; }
#imageObjectToolbar.is-split-mode #imageSplitToolbar { display: flex !important; }
.image-obj-toolbar-inner {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px 8px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
  pointer-events: auto;
  white-space: nowrap;
  max-width: calc(100vw - 32px);
  overflow-x: auto;
}
.image-obj-tool {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: none;
  background: transparent;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  color: #3f3f46;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.12s, color 0.12s;
}
.image-obj-tool.is-loading {
    pointer-events: none;
}
.image-obj-tool-icon {
    position: relative;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.image-obj-tool-icon-svg {
    display: block;
    color: #52525b;
}
.image-obj-tool-icon-spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid #e4e4e7;
    border-top-color: #3f3f46;
    border-radius: 50%;
    box-sizing: border-box;
    animation: canvas-spin 0.65s linear infinite;
}
.image-obj-tool.is-loading .image-obj-tool-icon-svg {
    opacity: 0;
}
.image-obj-tool.is-loading .image-obj-tool-icon-spinner {
    display: block;
    position: absolute;
    inset: 0;
    margin: auto;
}
.image-obj-tool svg { flex-shrink: 0; color: #52525b; }
.image-obj-tool:hover { background: #f4f4f5; color: #18181b; }
.image-obj-tool:hover svg { color: #18181b; }
.image-obj-tool-icon-only { padding: 6px 8px; }
.image-obj-tool-danger svg { color: #ef4444; }
.image-obj-tool-danger:hover { background: #fef2f2; }
.image-obj-tool-danger:hover svg { color: #dc2626; }
.image-obj-toolbar-divider {
  width: 1px;
  height: 20px;
  background: #e4e4e7;
  margin: 0 4px;
  flex-shrink: 0;
}
.image-obj-tool-badge-wrap { position: relative; }
.image-obj-badge {
  position: absolute;
  top: -6px;
  right: 4px;
  padding: 1px 5px;
  font-size: 10px;
  font-weight: 600;
  line-height: 1.3;
  color: #fff;
  background: #ef4444;
  border-radius: 999px;
  pointer-events: none;
  z-index: 1;
}
.image-obj-replace-btn {
  position: fixed;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border: none;
  background: rgba(24, 24, 27, 0.72);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transform: translate(-100%, 0) scale(var(--ui-scale, 1));
  transform-origin: top right;
  transition: background 0.12s;
  pointer-events: auto;
  white-space: nowrap;
}
.image-obj-replace-btn[hidden] { display: none !important; }
.image-obj-replace-btn svg { flex-shrink: 0; color: #fff; }
.image-obj-replace-btn:hover { background: rgba(24, 24, 27, 0.88); }
.image-obj-add-btn {
  position: fixed;
  z-index: 20;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid #e4e4e7;
  background: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
  color: #52525b;
  transition: background 0.12s, border-color 0.12s;
  transform: translate(0, -50%) scale(var(--ui-scale, 1));
  transform-origin: center left;
}
.image-obj-add-btn[hidden] { display: none !important; }
.image-obj-add-btn:hover {
  background: #f4f4f5;
  border-color: #d4d4d8;
  color: #18181b;
}
.image-obj-add-btn.is-dragging,
.image-obj-add-btn:active { cursor: grabbing; }
.image-obj-add-btn.is-open {
  background: #eff6ff;
  border-color: #2563eb;
  color: #2563eb;
}
.image-obj-add-btn.is-link-target {
  background: #eff6ff;
  border-color: #2563eb;
  color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
}
.canvas-link-drag-svg {
  position: fixed;
  inset: 0;
  z-index: 19;
  pointer-events: none;
  overflow: visible;
}
.canvas-link-drag-svg[hidden] { display: none !important; }
.image-obj-gen-menu {
  position: fixed;
  z-index: 21;
  min-width: 200px;
  padding: 8px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.14);
  font-family: inherit;
}
.image-obj-gen-menu[hidden] { display: none !important; }
.image-obj-gen-menu-title {
  padding: 6px 10px 8px;
  font-size: 13px;
  font-weight: 600;
  color: #18181b;
}
.image-obj-gen-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: #18181b;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.1s;
}
.image-obj-gen-menu-item svg { flex-shrink: 0; color: #52525b; }
.image-obj-gen-menu-item:hover:not(:disabled) { background: #f4f4f5; }
.image-obj-gen-menu-item.is-disabled,
.image-obj-gen-menu-item:disabled {
  color: #a1a1aa;
  cursor: not-allowed;
}
.image-obj-gen-menu-item.is-disabled svg,
.image-obj-gen-menu-item:disabled svg { color: #d4d4d8; }

/* 裁剪模式（参考：遮罩 + 九宫格 + 8 把手 + 比例面板） */
.image-crop-overlay {
  position: fixed;
  z-index: 18;
  pointer-events: none;
  box-sizing: border-box;
  overflow: visible;
}
.image-crop-overlay[hidden] { display: none !important; }
.image-crop-box {
  position: absolute;
  box-sizing: border-box;
  border: 2px solid #fff;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.58);
  cursor: move;
  pointer-events: auto;
  touch-action: none;
}
.image-crop-box.is-dragging { cursor: grabbing; }
.image-crop-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to right, rgba(255,255,255,0.55) 1px, transparent 1px) calc(33.333% - 0.5px) 0 / 33.333% 100% no-repeat,
    linear-gradient(to right, rgba(255,255,255,0.55) 1px, transparent 1px) calc(66.666% - 0.5px) 0 / 33.333% 100% no-repeat,
    linear-gradient(to bottom, rgba(255,255,255,0.55) 1px, transparent 1px) 0 calc(33.333% - 0.5px) / 100% 33.333% no-repeat,
    linear-gradient(to bottom, rgba(255,255,255,0.55) 1px, transparent 1px) 0 calc(66.666% - 0.5px) / 100% 33.333% no-repeat;
}
.image-crop-handle {
  position: absolute;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
  transform: translate(-50%, -50%);
  pointer-events: auto;
  z-index: 3;
}
.image-crop-handle[data-handle="nw"] { left: 0; top: 0; cursor: nwse-resize; }
.image-crop-handle[data-handle="n"]  { left: 50%; top: 0; cursor: ns-resize; }
.image-crop-handle[data-handle="ne"] { left: 100%; top: 0; cursor: nesw-resize; }
.image-crop-handle[data-handle="e"]  { left: 100%; top: 50%; cursor: ew-resize; }
.image-crop-handle[data-handle="se"] { left: 100%; top: 100%; cursor: nwse-resize; }
.image-crop-handle[data-handle="s"]  { left: 50%; top: 100%; cursor: ns-resize; }
.image-crop-handle[data-handle="sw"] { left: 0; top: 100%; cursor: nesw-resize; }
.image-crop-handle[data-handle="w"]  { left: 0; top: 50%; cursor: ew-resize; }
.image-crop-size {
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(24, 24, 27, 0.78);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}
.image-crop-panel {
  position: fixed;
  z-index: 22;
  min-width: 320px;
  max-width: min(560px, calc(100vw - 24px));
  padding: 10px 12px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 14px;
  box-shadow: 0 10px 32px rgba(15, 23, 42, 0.14);
  transform: translate(-50%, 0);
  font-family: inherit;
  left: 50%;
  top: 0;
}
.image-crop-panel[hidden] { display: none !important; }
.image-crop-panel-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
}
.image-crop-panel-row + .image-crop-panel-row {
  border-top: 1px solid #f0f0f0;
  margin-top: 4px;
  padding-top: 8px;
}
.image-crop-mode {
  flex-shrink: 0;
  min-width: 72px;
  padding: 6px 12px;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: #71717a;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
.image-crop-mode.is-active {
  background: #18181b;
  color: #fff;
  font-weight: 600;
}
.image-crop-ratios {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 4px;
  flex: 1;
  min-width: 0;
  padding-left: 10px;
  border-left: 1px solid #e4e4e7;
}
.image-crop-ratio {
  padding: 4px 8px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #52525b;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
.image-crop-ratio:hover { background: #f4f4f5; color: #18181b; }
.image-crop-ratio.is-active {
  background: #f4f4f5;
  color: #18181b;
  font-weight: 600;
  box-shadow: inset 0 0 0 1px #d4d4d8;
}
.image-crop-panel-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #f0f0f0;
}
.image-crop-panel-actions button {
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  border: 1px solid #e4e4e7;
  background: #fff;
  color: #18181b;
}
.image-crop-panel-actions button.primary {
  background: #18181b;
  color: #fff;
  border-color: #18181b;
}

/* 分割图片：图片上白虚线 + 圆点把手（参考交互） */
.image-split-overlay {
  position: fixed;
  z-index: 18;
  pointer-events: none;
  box-sizing: border-box;
}
.image-split-overlay[hidden] { display: none !important; }
.image-split-interactive {
  position: absolute;
  pointer-events: auto;
  touch-action: none;
}
.image-split-interactive.is-horizontal {
  left: 0;
  right: 0;
  height: 28px;
  cursor: ns-resize;
  transform: translateY(-50%);
}
.image-split-interactive.is-vertical {
  top: 0;
  bottom: 0;
  width: 28px;
  cursor: ew-resize;
  transform: translateX(-50%);
}
.image-split-line {
  position: absolute;
  pointer-events: none;
  box-sizing: border-box;
}
.image-split-interactive.is-horizontal .image-split-line {
  top: 50%;
  left: 0;
  right: 0;
  height: 0;
  transform: translateY(-50%);
  border-top: 2px dashed #fff;
  filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.45));
}
.image-split-interactive.is-vertical .image-split-line {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 0;
  transform: translateX(-50%);
  border-left: 2px dashed #fff;
  filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.45));
}
.image-split-handle {
  position: absolute;
  width: 28px;
  height: 28px;
  margin: 0;
  padding: 0;
  border-radius: 50%;
  background: #fff;
  border: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.28);
  pointer-events: none;
  transform: translate(-50%, -50%);
}
.image-split-interactive.is-horizontal .image-split-handle {
  left: 50%;
  top: 50%;
}
.image-split-interactive.is-vertical .image-split-handle {
  left: 50%;
  top: 50%;
}
.image-split-interactive.is-dragging,
.image-split-interactive.is-dragging.is-horizontal { cursor: ns-resize; }
.image-split-interactive.is-dragging.is-vertical { cursor: ew-resize; }
.image-split-toolbar .image-split-dir.is-active {
  background: #f4f4f5;
  box-shadow: inset 0 0 0 1px #18181b;
  font-weight: 600;
}
.canvas-toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  z-index: 10000;
  padding: 10px 18px;
  background: rgba(24, 24, 27, 0.92);
  color: #fff;
  font-size: 13px;
  border-radius: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  font-family: inherit;
}
.canvas-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 双击画布菜单 */
.canvas-dbl-menu {
  position: fixed;
  z-index: 25;
  min-width: 168px;
  padding: 6px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.12);
  font-family: inherit;
}
.canvas-dbl-menu[hidden] { display: none !important; }
.canvas-dbl-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: #18181b;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.1s;
}
.canvas-dbl-menu-item svg { flex-shrink: 0; color: #52525b; }
.canvas-dbl-menu-item:hover:not(:disabled) { background: #f4f4f5; }
.canvas-dbl-menu-item.is-disabled,
.canvas-dbl-menu-item:disabled {
  color: #a1a1aa;
  cursor: not-allowed;
}
.canvas-dbl-menu-item.is-disabled svg,
.canvas-dbl-menu-item:disabled svg { color: #d4d4d8; }
.canvas-dbl-menu-tag {
  margin-left: auto;
  font-size: 12px;
  font-weight: 400;
  color: #a1a1aa;
  flex-shrink: 0;
}

/* 生成弹窗 */
.canvas-gen-modal {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.45);
}
.canvas-gen-modal[hidden] { display: none !important; }
.canvas-gen-dialog {
  position: relative;
  width: min(560px, 100%);
  padding: 24px;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.2);
}
.canvas-gen-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: #f4f4f5;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #71717a;
}
.canvas-gen-title { margin: 0 0 6px; font-size: 18px; font-weight: 600; color: #18181b; }
.canvas-gen-desc { margin: 0 0 16px; font-size: 13px; color: #71717a; }
.canvas-gen-prompt {
  width: 100%;
  min-height: 96px;
  padding: 12px 14px;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  box-sizing: border-box;
  margin-bottom: 14px;
}
.canvas-gen-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}
.canvas-gen-field { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: #52525b; }
.canvas-gen-field select {
  height: 36px;
  padding: 0 10px;
  border: 1px solid #e4e4e7;
  border-radius: 10px;
  font-size: 13px;
  font-family: inherit;
  background: #fff;
}
.canvas-gen-actions { display: flex; justify-content: flex-end; gap: 8px; }
.canvas-gen-btn {
  height: 38px;
  padding: 0 16px;
  border: 1px solid #e4e4e7;
  border-radius: 10px;
  background: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.canvas-gen-btn-primary { background: #18181b; color: #fff; border-color: #18181b; }

/* 加载遮罩 */
.canvas-loading {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(4px);
}
.canvas-loading[hidden] { display: none !important; }
.canvas-loading-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 32px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
}
.canvas-loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #e4e4e7;
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: canvas-spin 0.8s linear infinite;
}
@keyframes canvas-spin { to { transform: rotate(360deg); } }
.canvas-loading-inner p { margin: 0; font-size: 14px; color: #52525b; }

/* 图层面板 */
.canvas-layers-panel {
  position: fixed;
  right: 16px;
  top: 156px;
  z-index: 25;
  width: 220px;
  max-height: calc(100vh - 220px);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #e4e4e7;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.canvas-layers-panel[hidden] { display: none !important; }
.canvas-layers-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid #f0f0f0;
  font-size: 13px;
  font-weight: 600;
  color: #18181b;
}
.canvas-layers-head button {
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  color: #71717a;
  display: flex;
  align-items: center;
  justify-content: center;
}
.canvas-layers-list { overflow-y: auto; padding: 6px; }
.canvas-layer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 12px;
  color: #3f3f46;
  cursor: pointer;
}
.canvas-layer-item:hover { background: #f4f4f5; }
.canvas-layer-item.is-active { background: #eff6ff; color: #1d4ed8; }
.canvas-layer-thumb {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  background: #f4f4f5;
  flex-shrink: 0;
}

/* 画布生成底部面板（视频 / 图片编辑） */
.canvas-gen-composer {
  position: fixed;
  left: 50%;
  bottom: 76px;
  transform: translateX(-50%);
  z-index: 100;
  width: min(720px, calc(100vw - 32px));
  pointer-events: auto;
}
.canvas-gen-composer[hidden] { display: none !important; }
.canvas-gen-composer-inner {
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.12);
  overflow: visible;
}
.canvas-gen-ref-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 16px 0;
}
.canvas-gen-ref-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 72px;
  flex-shrink: 0;
}
.canvas-gen-ref-thumb {
  position: relative;
  width: 72px;
  height: 72px;
  border-radius: 12px;
  overflow: hidden;
  background: #f4f4f5;
  border: 1px solid #e4e4e7;
}
.canvas-gen-ref-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.canvas-gen-ref-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 4px 6px;
  background: rgba(24, 24, 27, 0.72);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}
.canvas-gen-ref-label {
  font-size: 12px;
  font-weight: 600;
  color: #52525b;
}
.canvas-gen-ref-add {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 72px;
  height: 72px;
  border: 1px dashed #d4d4d8;
  border-radius: 12px;
  background: #fafafa;
  color: #71717a;
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  transition: border-color 0.12s, background 0.12s;
}
.canvas-gen-ref-add-icon {
  padding: 0;
}
.canvas-gen-ref-add:hover {
  border-color: #a1a1aa;
  background: #f4f4f5;
  color: #52525b;
}
.canvas-gen-ref-add svg { color: #a1a1aa; }
.canvas-gen-prompt-wrap { padding: 12px 16px 0; }
.canvas-gen-prompt {
  display: block;
  width: 100%;
  min-height: 56px;
  border: none;
  background: transparent;
  padding: 0;
  font-size: 14px;
  line-height: 1.55;
  color: #18181b;
  outline: none;
  resize: vertical;
  box-sizing: border-box;
  font-family: inherit;
}
.canvas-gen-prompt::placeholder { color: #a1a1aa; }
.canvas-gen-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px 14px;
}
.canvas-gen-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
}
.canvas-gen-tag-menu { position: relative; }
.canvas-gen-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid #e4e4e7;
  background: #fff;
  font-size: 12px;
  font-weight: 600;
  color: #18181b;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  white-space: nowrap;
}
.canvas-gen-tag:hover { background: #f4f4f5; }
.canvas-gen-tag svg { flex-shrink: 0; color: #71717a; }
.canvas-gen-tag.is-on {
  background: #eff6ff;
  border-color: #93c5fd;
  color: #2563eb;
}
.canvas-gen-tag.is-on svg { color: #2563eb; }
.canvas-gen-speed.is-speed-active {
  background: #ecfdf5;
  border-color: #86efac;
  color: #16a34a;
}
.canvas-gen-speed.is-speed-active svg { color: #16a34a; }
.canvas-gen-chevron { transform: rotate(180deg); }
.canvas-gen-tag-panel {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  z-index: 30;
  min-width: 88px;
  padding: 6px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}
.canvas-gen-tag-panel[hidden] { display: none !important; }
.canvas-gen-tag-opt {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: #18181b;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}
.canvas-gen-tag-opt:hover { background: #f4f4f5; }
.canvas-gen-tag-opt.is-selected { font-weight: 700; color: #2563eb; }
.canvas-gen-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.canvas-gen-credits {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: #71717a;
  white-space: nowrap;
}
.canvas-gen-credits svg { color: #a1a1aa; }
.canvas-gen-submit {
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #18181b;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  transition: opacity 0.12s;
}
.canvas-gen-submit svg { transform: rotate(-90deg); }
.canvas-gen-submit:not(:disabled):hover { opacity: 0.88; }
.canvas-gen-submit:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.canvas-gen-at-panel {
  position: fixed;
  z-index: 110;
  min-width: 200px;
  max-height: 240px;
  overflow-y: auto;
  padding: 6px;
  background: #fff;
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.14);
}
.canvas-gen-at-empty {
  padding: 10px 12px;
  font-size: 12px;
  color: #a1a1aa;
}
.canvas-gen-at-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #18181b;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}
.canvas-gen-at-item:hover { background: #f4f4f5; }
.canvas-gen-at-item img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: #f4f4f5;
}

.canvas-video-result {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 23, 42, 0.45);
  pointer-events: auto;
}
.canvas-video-result[hidden] { display: none !important; }
.canvas-video-result-dialog {
  position: relative;
  width: min(720px, 100%);
  max-height: 90vh;
  overflow: auto;
  padding: 24px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.2);
}
.canvas-video-fallback-banner {
  margin: 10px 0 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  font-size: 13px;
  line-height: 1.5;
}
.canvas-video-fallback-banner[hidden] { display: none !important; }
.canvas-video-fallback-banner strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
  color: #c2410c;
}
.canvas-video-fallback-banner span { display: block; word-break: break-word; }
.canvas-video-fallback-banner p { margin: 6px 0 0; font-size: 12px; color: #a16207; }
.picset-kling-status-banner {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
  font-size: 12px;
  line-height: 1.45;
}
.picset-kling-status-banner[hidden] { display: none !important; }
.picset-kling-status-banner strong {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: #b45309;
}
.picset-kling-status-banner p { margin: 4px 0 0; font-size: 11px; }
.picset-kling-status-hint { color: #a16207 !important; }
.canvas-video-result-media {
  margin: 16px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  background: #fafafa;
  border-radius: 12px;
  overflow: hidden;
}

/* 小地图 */
.canvas-minimap-wrap {
  position: absolute;
  right: 16px;
  bottom: 72px;
  z-index: 30;
  padding: 8px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #e4e4e7;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}
.canvas-minimap-head {
  font-size: 11px;
  font-weight: 600;
  color: #71717a;
  margin-bottom: 6px;
}
#canvasMinimap {
  display: block;
  border-radius: 8px;
  cursor: crosshair;
  background: #f4f4f5;
}

/* 画布弹窗 */
.canvas-studio-modal {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.45);
}
.canvas-studio-modal[hidden] { display: none !important; }
.canvas-studio-modal-dialog {
  position: relative;
  width: min(480px, calc(100vw - 32px));
  padding: 24px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.2);
}

.toolbar-corner-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

button:focus { outline: none !important; }
*:focus, *:focus-visible, *:active { outline: none !important; box-shadow: none !important; }

@media (max-width: 768px) {
  #canvasContainer {
    top: 56px;
  }
  .canvas-gen-composer {
    bottom: 12px;
    width: calc(100vw - 16px);
  }
  .canvas-gen-composer-inner {
    border-radius: 16px;
  }
  .canvas-gen-ref-row {
    padding: 12px 12px 0;
  }
  .image-obj-toolbar {
    max-width: calc(100vw - 16px);
  }
  .image-obj-toolbar-inner {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .image-obj-toolbar-inner::-webkit-scrollbar {
    display: none;
  }
  .image-crop-panel {
    min-width: 0;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
  }
  .canvas-empty-hint {
    flex-wrap: wrap;
    gap: 8px;
  }
  .toolbar-corner-stack {
    right: 8px;
    bottom: 8px;
  }
}