/* mindmap5.3 · sections.css —— 分区工具栏、命名对话框与范围变化预览 */
#section-node-preview-layer {
  position: absolute; left: 0; top: 0; width: 1px; height: 1px; overflow: visible;
  z-index: var(--z-section-preview); pointer-events: none;
}
.section-node-preview, .section-preview-key { --section-preview-color: var(--ui-success); }
.section-node-preview[data-change="removed"], .section-preview-key[data-change="removed"] { --section-preview-color: var(--ui-warning); }
.section-node-preview[data-change="conflict"], .section-preview-key[data-change="conflict"] { --section-preview-color: var(--ui-danger); }
.section-node-preview {
  stroke: var(--section-preview-color); stroke-width: var(--section-preview-line);
  fill: var(--section-preview-color); fill-opacity: var(--section-preview-fill-opacity); pointer-events: none;
}
.section-node-preview[data-change="removed"] { stroke-dasharray: 6 4; }
.section-preview-legend { display: inline-flex; flex-wrap: wrap; gap: var(--section-gap); margin-inline-start: var(--section-gap); }
.section-preview-key { display: inline-flex; align-items: center; gap: 4px; color: var(--text-0); }
.section-preview-key::before { content: ''; width: 12px; height: 9px; box-sizing: border-box;
  border: 2px solid var(--section-preview-color); border-radius: 2px; background: color-mix(in srgb, var(--section-preview-color) 12%, transparent); }
.section-preview-key[data-change="removed"]::before { border-style: dashed; }
.section-dock[hidden] { display: none; }
.section-dock {
  box-sizing: border-box;
  position: fixed; left: 50%; bottom: max(18px, env(safe-area-inset-bottom)); transform: translateX(-50%);
  z-index: var(--z-menu, 100); width: max-content; max-width: min(var(--section-dock-width), calc(100vw - 24px));
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: var(--section-gap);
  padding: 10px 14px; border: 1px solid var(--panel-border); border-radius: var(--section-radius);
  background: var(--panel-bg); color: var(--text-0); box-shadow: var(--shadow-panel, 0 8px 32px #0002);
  backdrop-filter: blur(16px);
}
.section-dock-name { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.section-dock button, .section-dialog button {
  min-height: 36px; padding: 7px 12px; color: var(--text-0); font: inherit; font-size: 13px;
  border: 1px solid var(--panel-border); border-radius: 8px; background: var(--bg-1); cursor: pointer;
}
.section-dock button:hover, .section-dialog button:hover { border-color: var(--sel-ring); }
.section-dock button:focus-visible, .section-dialog :focus-visible { outline: 2px solid var(--sel-ring); outline-offset: 2px; }
.section-dock .section-colors { display: flex; gap: 5px; }
.section-colors > .mm-color-chip { display: none; }
.section-status { flex-basis: 100%; text-align: center; font-size: 12px; color: var(--text-2); }
.section-dialog { width: min(var(--section-dialog-width), calc(100vw - 32px)); box-sizing: border-box;
  border: 1px solid var(--panel-border); border-radius: var(--section-radius); padding: 24px;
  background: var(--panel-bg); color: var(--text-0); font-family: var(--font-ui); }
.section-dialog::backdrop { background: #0006; }
.section-dialog h2 { margin: 0 0 20px; font-size: 18px; }
.section-dialog label { display: flex; flex-direction: column; gap: var(--section-gap); margin-bottom: 16px; font-size: 13px; }
.section-dialog input[type="text"] { width: 100%; min-height: 44px; box-sizing: border-box; padding: 10px;
  border: 1px solid var(--panel-border); border-radius: 8px; background: var(--bg-1); color: var(--text-0); font: inherit; }
.section-dialog input[type="color"] { width: 100%; height: 44px; border: 1px solid var(--panel-border); border-radius: 8px; background: none; cursor: pointer; }
.section-dialog-hint { font-size: 12px; color: var(--text-2); }
.section-dialog-actions { display: flex; justify-content: flex-end; gap: var(--section-gap); }
@media (max-width: 899px), (pointer: coarse) {
  .section-dock { max-width: calc(100vw - 16px); padding: 8px; bottom: max(8px, env(safe-area-inset-bottom)); background: var(--ui-panel); backdrop-filter: none; }
  .section-dock button, .section-dialog button { min-height: 44px; min-width: 44px; }
  .section-dock-name { flex-basis: 100%; max-width: 100%; text-align: center; }
  body.section-selected #dock { visibility: hidden; }
}

body.section-selected #mobilebar { display: none; }
body.reader-mode-reader-only .section-dock { display: none; }