/* 编辑器三栏布局 */
.editor-app {
  display: grid;
  grid-template-columns: 288px minmax(0, 1fr) 320px;
  gap: 0;
  height: calc(100vh - 60px);
  min-height: 560px;
}
.panel {
  background: var(--card);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 16px;
}
.panel-right { border-right: 0; border-left: 1px solid var(--line); }
.panel-section { margin-bottom: 22px; }
.panel-title { font-weight: 700; font-size: 14.5px; margin-bottom: 11px; display: flex; align-items: center; gap: 7px; }
.panel-title::before { content: ""; width: 5px; height: 16px; border-radius: 3px; background: var(--accent); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* 上传区 */
.upload-zone { display: block; border: 2px dashed var(--line); border-radius: var(--radius-sm); padding: 22px 12px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; color: var(--ink-soft); }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--accent); background: var(--accent-soft); }
.upload-inner div { margin-top: 4px; font-size: 13.5px; }
#source-preview { margin-top: 10px; border-radius: var(--radius-sm); overflow: hidden; border: 1px solid var(--line); }
#source-preview img { width: 100%; display: block; max-height: 150px; object-fit: contain; background: var(--field-bg); }

/* 中栏画布 */
.canvas-wrap { display: flex; flex-direction: column; min-width: 0; background: #efe8db; }
.canvas-toolbar {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  padding: 9px 13px; background: var(--card); border-bottom: 1px solid var(--line);
}
.tool-group { display: flex; gap: 3px; }
.tool-btn {
  width: 36px; height: 36px; border-radius: 9px; border: 1.5px solid transparent;
  background: transparent; color: var(--ink-soft); cursor: pointer; display: inline-flex;
  align-items: center; justify-content: center; transition: all .12s;
}
.tool-btn svg { width: 19px; height: 19px; }
.tool-btn:hover { background: var(--accent-soft); color: var(--accent-deep); }
.tool-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: 0 2px 8px rgba(232,85,47,.35); }
.tool-divider { width: 1px; height: 22px; background: var(--line); margin: 0 3px; }
.canvas-toolbar .spacer { flex: 1; }
.zoom-label { font-size: 12.5px; color: var(--ink-soft); min-width: 42px; text-align: center; }
.canvas-toolbar label { gap: 4px; font-size: 12.5px; }
.canvas-stage { flex: 1; position: relative; overflow: hidden; }
#grid-canvas { position: absolute; left: 0; top: 0; touch-action: none; cursor: crosshair; }
.canvas-hint {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px; color: var(--ink-faint);
  text-align: center; padding: 20px; pointer-events: none;
}
.canvas-hint .btn { pointer-events: auto; }
.canvas-hint.hidden { display: none; }
.mobile-save-bar { display: none; }

/* 右栏 Tabs */
.panel-tabs { display: flex; gap: 4px; margin: -4px 0 14px; background: var(--paper); padding: 4px; border-radius: 10px; }
.panel-tab { flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 8px; cursor: pointer; font-family: var(--font-body); font-size: 13.5px; color: var(--ink-soft); }
.panel-tab.active { background: var(--field-bg); color: var(--accent-deep); font-weight: 700; box-shadow: var(--shadow-sm); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* 调色板 */
.selected-color { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.selected-color .swatch { width: 30px; height: 30px; border-radius: 8px; }
.palette-group { margin-bottom: 14px; }
.palette-group-title { font-size: 12.5px; font-weight: 700; color: var(--ink-soft); margin: 0 0 7px; }
.palette-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); gap: 7px; }
.palette-cell {
  border: 1.5px solid var(--line); border-radius: 9px; background: var(--field-bg); padding: 6px 3px 5px;
  text-align: center; cursor: pointer; transition: transform .1s, border-color .1s;
}
.palette-cell:hover { transform: translateY(-2px); border-color: var(--accent); }
.palette-cell.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.palette-cell .dot { width: 24px; height: 24px; border-radius: 50%; margin: 0 auto 4px; border: 1px solid rgba(0,0,0,.12); }
.palette-cell .code { font-size: 10.5px; font-weight: 600; color: var(--ink-soft); font-variant-numeric: tabular-nums; }

/* 材料清单 */
.stats-list { max-height: 52vh; overflow-y: auto; display: flex; flex-direction: column; gap: 7px; }
.stat-row { display: flex; align-items: center; gap: 9px; padding: 7px 9px; border: 1px solid var(--line-soft); border-radius: 9px; background: var(--field-bg); }
.stat-row .code { font-weight: 700; font-size: 12.5px; min-width: 40px; font-variant-numeric: tabular-nums; }
.stat-row .nm { flex: 1; font-size: 12.5px; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stat-row .cnt { font-weight: 700; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.stat-bar { height: 4px; border-radius: 2px; background: var(--accent); margin-top: 3px; }

.export-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }

/* 原图缩略 */
.source-img { margin-top: 10px; width: 100%; max-height: 150px; object-fit: contain; background: var(--field-bg); border: 1px solid var(--line); border-radius: var(--radius-sm); }
.upload-zone.has-image { padding: 10px; }
.upload-zone.has-image .upload-inner { display: none; }

/* 移动端 */
@media (max-width: 900px) {
  .editor-app { grid-template-columns: 1fr; height: calc(100vh - 60px); }
  .panel-left, .panel-right {
    display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 95;
    background: var(--card); border-radius: 18px 18px 0 0; border-left: 0; border-right: 0;
    max-height: 80vh; overflow-y: auto; padding: 10px 16px 28px;
    transform: translateY(105%); transition: transform .22s ease-out;
    box-shadow: 0 -8px 30px rgba(46,42,37,.18);
  }
  .panel-left::before, .panel-right::before {
    content: ""; display: block; width: 44px; height: 5px; border-radius: 3px;
    background: var(--line); margin: 6px auto 12px;
  }
  .panel-left.sheet-show, .panel-right.sheet-show { display: block; transform: translateY(0); }
  .mobile-save-bar {
    display: flex; gap: 8px; padding: 8px 10px; background: var(--card);
    border-top: 1px solid var(--line);
  }
  .mobile-save-bar .btn { flex: 1; }
  .tool-divider { display: none; }
  .canvas-toolbar { gap: 5px; padding: 7px 9px; overflow-x: auto; flex-wrap: nowrap; }
  .canvas-toolbar label { white-space: nowrap; }
  .stats-list { max-height: 52vh; }
}

/* 底部抽屉遮罩 */
.sheet-mask { position: fixed; inset: 0; background: rgba(46,42,37,.45); z-index: 90; display: none; }
.sheet-mask.show { display: block; }
.bottom-sheet { display: none; }