/* === 26-collab-picker.css ===
 * 协作侧栏的弹层与资料选择器(从 25-collab-sidebar.css 拆出,单一职责)。
 * 管辖:资料选择器(rp-* 高奢重做:头部/搜索/筛选/双列单列/卡片/底部批量/居中预览弹窗)、
 *   添加空间弹层、助手设置弹层,以及它们的移动端贴底形态。
 * 边界:颜色走 01-variables.css 派生 token,禁止裸 hex / 新增 :root。资料选择器内部用独立
 *   rp-* 命名空间,与 collab-picker-*(添加空间/助手设置共用外壳)解耦,互不影响。
 */

/* 8. 弹层外壳(资料选择器 / 添加空间 / 助手设置共用) */
.collab-picker-overlay {
  position: fixed;
  inset: 0;
  z-index: 240;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: var(--shadow-deep);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.collab-picker-panel {
  width: min(420px, 100%);
  max-height: min(560px, 86vh);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  background: var(--bg-floating);
  box-shadow: var(--shadow-ambient);
}

.collab-picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--text-main);
}

.collab-picker-head strong {
  font-size: 16px;
}

.collab-picker-head small {
  display: block;
  margin-bottom: 2px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--brand-primary);
}

.collab-picker-loading,
.collab-picker-meta,
.collab-picker-more {
  font-size: 12px;
  color: var(--text-dim);
}

.collab-picker-overlay .collab-panel-empty {
  padding: var(--space-6) 0;
}

/* ════════ 9. 资料选择器(rp-* 高奢重做)════════ */
/* 面板:去掉通用外壳的内边距/间距,各分区自管留白;整体不溢出,内部滚动区滚 */
.collab-resource-picker-panel.rp-panel {
  width: min(460px, 100%);
  padding: 0;
  gap: 0;
  overflow: hidden;
}

.rp-loading {
  padding: var(--space-8) var(--space-6);
  font-size: 13px;
  color: var(--text-dim);
}

/* 9.1 头部 */
.rp-head {
  padding: var(--space-6) var(--space-6) var(--space-4);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.rp-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.rp-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-primary);
}

.rp-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-main);
}

.rp-close {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-close svg { width: 18px; height: 18px; }
.rp-close:hover { background: var(--bg-active); color: var(--text-main); }

/* 头部右侧动作组(刷新 + 关闭) */
.rp-head-actions {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.rp-refresh {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-refresh svg { width: 17px; height: 17px; }
.rp-refresh:hover { background: var(--bg-active); color: var(--text-main); }
.rp-refresh.is-spinning svg { animation: rp-spin 0.7s linear infinite; }
@keyframes rp-spin { to { transform: rotate(360deg); } }

/* 9.2 搜索 */
.rp-search {
  position: relative;
  padding: 0 var(--space-6);
  margin-bottom: var(--space-4);
}
.rp-search > svg {
  position: absolute;
  left: calc(var(--space-6) + 14px);
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-dim);
  pointer-events: none;
}
.rp-search input {
  width: 100%;
  height: 44px;
  padding: 0 var(--space-4) 0 44px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--text-main);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: var(--transit-fast);
}
.rp-search input:focus {
  border-color: var(--brand-primary);
  background: var(--bg-active);
  box-shadow: 0 0 0 3px var(--brand-bg-light);
}

/* 9.3 类型筛选 tabs */
.rp-tabs {
  display: flex;
  gap: var(--space-2);
  padding: 0 var(--space-6) var(--space-3);
  overflow-x: auto;
  scrollbar-width: none;
  /* overflow-x:auto 让本行成为滚动容器,其 flex 自动最小尺寸退化为 0 → 在移动端贴底
     弹层(高度受限的 flex 列)里,会被 flexbox 唯一挑去压缩,纵向裁掉 chip 上半。
     flex-shrink:0 锁住自然高度,余量统一由 .rp-scroll 吸收(规范的固定头/尾+滚动体形态)。 */
  flex-shrink: 0;
}
.rp-tabs::-webkit-scrollbar { display: none; }

.rp-tab {
  flex-shrink: 0;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-muted);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-tab:hover { color: var(--text-main); background: var(--bg-active); }
.rp-tab.active {
  border-color: var(--brand-border);
  background: var(--brand-bg-light);
  color: var(--brand-primary);
}

/* 9.4 工具栏(计数 + 双列/单列) */
.rp-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--border-glass);
}
.rp-count { font-size: 13px; color: var(--text-muted); }

.rp-viewtoggle {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
}
.rp-view-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px var(--space-3);
  border: none;
  border-radius: 6px;
  background: none;
  color: var(--text-muted);
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-view-btn svg { width: 13px; height: 13px; }
.rp-view-btn.active { background: var(--bg-active); color: var(--text-main); }

/* 9.5 滚动区 */
.rp-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5) var(--space-6);
}
.rp-scroll::-webkit-scrollbar { width: 6px; }
.rp-scroll::-webkit-scrollbar-thumb {
  background: var(--bg-active);
  border-radius: 3px;
}

.rp-list.is-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.rp-list.is-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.rp-more {
  margin-top: var(--space-3);
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
}

/* 9.6 高奢卡片 */
.rp-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  transition: transform var(--transit-normal), border-color var(--transit-normal), box-shadow var(--transit-normal);
}
.rp-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--text-main) 15%, transparent);
  box-shadow: 0 12px 30px var(--shadow-overlay);
}
.rp-card.selected {
  border-color: var(--brand-primary);
  background: var(--brand-bg-subtle);
  box-shadow: 0 0 24px var(--brand-bg-light);
}

/* 类型徽章 */
.rp-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  padding: 4px var(--space-2);
  border: 1px solid var(--border-glass);
  border-radius: 6px;
  background: var(--bg-floating);
  color: var(--text-bright);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  pointer-events: none;  /* 点击穿透到媒体区 → 放大预览 */
}

/* 圆形勾选(多选) */
.rp-select {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 4;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
}
.rp-select-dot {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1.5px solid color-mix(in srgb, var(--text-main) 35%, transparent);
  background: var(--bg-floating);
  transition: var(--transit-normal);
}
.rp-select-dot svg {
  width: 11px;
  height: 11px;
  color: var(--text-on-color);
  opacity: 0;
  transform: scale(0.6);
  transition: var(--transit-normal);
}
.rp-select:hover .rp-select-dot { border-color: var(--brand-primary); background: var(--brand-bg); }
.rp-card.selected .rp-select-dot {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  box-shadow: 0 0 10px var(--brand-glow);
}
.rp-card.selected .rp-select-dot svg { opacity: 1; transform: scale(1); }

/* 顶部预览区 */
.rp-media {
  position: relative;
  width: 100%;
  height: 124px;
  overflow: hidden;
  /* 媒体区自带圆角 + overflow:hidden,自己 clip 放大的图;
     治 WebKit「父级圆角对有 transform 的子元素裁剪失效」导致 hover 放大时顶角漏方角 */
  border-radius: calc(var(--radius-md) - 1px) calc(var(--radius-md) - 1px) 0 0;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-in;
}
.rp-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transit-slow);
}
.rp-card:hover .rp-media img { transform: scale(1.05); }
.rp-media-ph { width: 40px; height: 40px; color: var(--text-dim); }

.rp-media-mask {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--theme-bg) 88%, transparent);
  opacity: 0;
  transition: var(--transit-normal);
}
.rp-media:hover .rp-media-mask { opacity: 1; }
.rp-media-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-3);
  border: 1px solid color-mix(in srgb, var(--text-main) 20%, transparent);
  border-radius: var(--radius-full);
  background: var(--bg-active);
  color: var(--text-bright);
  font-size: 11px;
  font-weight: 500;
}
.rp-media-badge svg { width: 12px; height: 12px; }

/* 下半信息区 */
.rp-info {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) 14px;
  cursor: pointer;
}
.rp-card-title {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rp-card-desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.rp-card-foot {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.rp-card-foot > span {
  font-size: 11px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 快速「+ 加入输入框」(直接插入光标处,不关弹层)。落在 foot 行右端,与"类型·大小"同基线对齐 */
.rp-add {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  background: var(--bg-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: transform var(--transit-bounce), background var(--transit-fast), border-color var(--transit-fast), color var(--transit-fast);
}
.rp-add svg { width: 14px; height: 14px; }
.rp-add:hover {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: var(--text-on-color);
  box-shadow: 0 4px 10px var(--brand-bg-strong);
  transform: scale(1.15);
}
.rp-add:active { transform: scale(0.9); }

/* 单列布局:横向卡片 */
.rp-list.is-list .rp-card { flex-direction: row; height: 104px; }
.rp-list.is-list .rp-media {
  width: 104px;
  height: 100%;
  flex-shrink: 0;
  border-radius: calc(var(--radius-md) - 1px) 0 0 calc(var(--radius-md) - 1px);
}
.rp-list.is-list .rp-info { padding: var(--space-3) var(--space-4); }
.rp-list.is-list .rp-card-title { -webkit-line-clamp: 1; }
.rp-list.is-list .rp-card-desc { -webkit-line-clamp: 1; }
.rp-list.is-list .rp-badge { top: 8px; left: 8px; }

/* 9.7 底部批量栏 */
.rp-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--border-glass);
  background: var(--bg-floating);
}
.rp-selstatus { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.rp-selcount { font-size: 14px; font-weight: 500; color: var(--text-main); }
.rp-selcount span { color: var(--brand-primary); font-weight: 700; }
.rp-clear {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: none;
  border: none;
  color: var(--text-muted);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-clear svg { width: 12px; height: 12px; }
.rp-clear:hover { color: var(--brand-primary); }
.rp-clear[hidden] { display: none; }

.rp-actions { display: flex; gap: var(--space-3); flex-shrink: 0; }
.rp-btn {
  height: 44px;
  padding: 0 var(--space-5);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  border-radius: var(--radius-md);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transit-normal);
}
.rp-btn svg { width: 14px; height: 14px; }
.rp-btn-secondary {
  border: 1px solid var(--border-glass);
  background: var(--bg-subtle);
  color: var(--text-main);
}
.rp-btn-secondary:hover { background: var(--bg-active); border-color: var(--border-light); }
.rp-btn-primary {
  background: var(--brand-primary);
  color: var(--text-on-color);
  box-shadow: 0 4px 12px var(--brand-bg);
}
.rp-btn-primary:hover { background: var(--brand-primary-hover); transform: translateY(-1px); }
.rp-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

/* 10. 添加空间弹层 */
.collab-picker-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  overflow: auto;
}

.collab-picker-item {
  min-height: 46px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  padding: var(--space-3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--text-main);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: var(--transit-fast);
}

.collab-picker-item:hover {
  border-color: var(--brand-border);
  background: var(--bg-hover);
}

.collab-picker-item small {
  max-width: 100%;
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-picker-link {
  align-self: flex-start;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
}

.collab-picker-link:hover {
  color: var(--brand-primary);
}

/* 11. 助手设置弹层 */
.collab-settings-panel {
  width: min(540px, 100%);
}

.collab-settings-body,
.collab-settings-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.collab-smart-row,
.collab-settings-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--text-main);
  font: inherit;
  text-align: left;
}

.collab-smart-row small,
.collab-settings-item small {
  display: block;
  margin-top: 3px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collab-state-pill {
  min-width: 42px;
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-2);
  border: 1px solid var(--brand-border);
  border-radius: var(--radius-full);
  background: var(--brand-primary);
  color: var(--send-text);
  font-size: 12px;
  font-weight: 600;
}

.collab-state-pill.muted {
  border-color: var(--border-glass);
  background: var(--bg-subtle);
  color: var(--text-muted);
}

.collab-settings-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
  padding-top: var(--space-2);
}

/* 12. 居中预览弹窗(图片放大 / 视频音频 / 文档文本 + 一键导入) */
.rp-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  background: color-mix(in srgb, var(--theme-bg) 92%, transparent);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  opacity: 0;
  transition: opacity var(--transit-normal);
}
.rp-preview-modal.active { opacity: 1; }

.rp-modal {
  width: 100%;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  box-shadow: 0 24px 80px var(--shadow-deep);
  transform: scale(0.95);
  transition: transform var(--transit-normal);
}
.rp-preview-modal.active .rp-modal { transform: scale(1); }

.rp-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border-glass);
}
.rp-modal-titlegroup { display: flex; align-items: center; gap: var(--space-3); min-width: 0; }
.rp-modal-badge {
  flex-shrink: 0;
  padding: 4px var(--space-2);
  border: 1px solid var(--brand-border);
  border-radius: 6px;
  background: var(--brand-bg-light);
  color: var(--brand-primary);
  font-size: 11px;
  font-weight: 600;
}
.rp-modal-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rp-modal-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: var(--bg-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transit-fast);
}
.rp-modal-close svg { width: 16px; height: 16px; }
.rp-modal-close:hover { background: var(--bg-active); color: var(--text-main); }

.rp-modal-body {
  flex: 1;
  min-height: 240px;
  max-height: 60dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  background: var(--bg-deep);
}
.rp-modal-body img { max-width: 100%; max-height: 60dvh; object-fit: contain; }
.rp-modal-body video,
.rp-modal-body audio { width: 100%; max-height: 60dvh; }
.rp-modal-doc { width: 100%; max-height: 60dvh; overflow: auto; padding: var(--space-6); }
.rp-modal-text {
  margin: 0;
  white-space: pre-wrap;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-main);
}

.rp-modal-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-glass);
}
.rp-modal-info { font-size: 13px; color: var(--text-muted); }
.rp-modal-import { height: 38px; font-size: 13px; }

/* 13b. 资料选择器抽屉 · 进出过渡
   机制:JS append 轻壳(离屏)→ 双 rAF 滑入 → transitionend 后分批挂卡片;
        关闭加 .is-closing 滑出。关键路径只动 transform/opacity,不动画 backdrop-filter。
   时长/缓动用本组件局部变量 --rp-*:不能直接拼 var(--transit-*),那些 token 已含 cubic-bezier,
        再追一条 easing 会让整条 transition/animation 非法被丢弃 → 退化成"瞬切无滑动"(本轮 bug 根因)。
   作用域:仅资料选择器(.collab-picker-side),添加空间/助手设置弹层不受影响。 */
@keyframes collabSheetIn {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

/* 遮罩:进出只淡 opacity(PC/移动通用)。本组件动画时长/缓动单一源在此,向下继承到面板 */
.collab-picker-overlay.collab-picker-side {
  --rp-in: 300ms;
  --rp-out: 200ms;
  --rp-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --rp-ease-in: cubic-bezier(0.3, 0, 0.8, 0.15);
  opacity: 0;
  /* active 前/退出时不拦截点击:慢加载或滑出途中让点击穿透到页面,
     不变成"不可见却铺满全屏"的遮罩挡屏(审核 finding 1) */
  pointer-events: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  transition: opacity var(--rp-in) var(--rp-ease-out);
  will-change: opacity;
}
.collab-picker-overlay.collab-picker-side.is-active { opacity: 1; pointer-events: auto; }
.collab-picker-overlay.collab-picker-side.is-closing {
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--rp-out) var(--rp-ease-in);
}

@media (min-width: 1024px) {
  .collab-picker-overlay.collab-picker-side {
    justify-content: flex-end;
    align-items: stretch;
    padding: var(--space-3);
    background: color-mix(in srgb, var(--shadow-overlay) 50%, transparent);
  }

  /* 面板:实色浮层随 transform 从离屏右滑入,不触发背景重复栅格化。 */
  .collab-picker-overlay.collab-picker-side .collab-resource-picker-panel {
    width: min(460px, 96vw);
    height: 100%;
    max-height: none;
    background: var(--bg-floating);
    box-shadow: var(--shadow-ambient);
    transform: translate3d(100%, 0, 0);
    will-change: transform;
    transition: transform var(--rp-in) var(--rp-ease-out);
  }
  .collab-picker-overlay.collab-picker-side.is-active .collab-resource-picker-panel {
    transform: translate3d(0, 0, 0);
  }

  .collab-picker-overlay.collab-picker-side.is-settled .collab-resource-picker-panel {
    will-change: auto;
  }

  /* 出场只做 transform 反向。 */
  .collab-picker-overlay.collab-picker-side.is-closing .collab-resource-picker-panel {
    transform: translate3d(100%, 0, 0);
    will-change: transform;
    transition: transform var(--rp-out) var(--rp-ease-in);
  }
}

/* 14. 移动端(≤1023px:弹层贴底) */
@media (max-width: 1023px) {
  .collab-picker-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .collab-picker-panel {
    width: 100%;
    max-height: 84vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom));
  }

  /* 资料选择器面板内分区自管 padding,贴底安全区给 footer */
  .collab-resource-picker-panel.rp-panel { padding-bottom: 0; }
  .rp-footer {
    flex-wrap: wrap;
    row-gap: var(--space-3);
    padding-bottom: calc(var(--space-5) + env(safe-area-inset-bottom));
  }
  .rp-selstatus { flex: 1 1 100%; }
  .rp-actions { flex: 1 1 100%; }
  .rp-btn { flex: 1; }

  /* 添加空间 / 助手设置:贴底进场(挂载即跑,关闭由 JS 直接移除)。
     用 var(--transit-normal) 单独做时长+缓动,不再追加第二条 cubic-bezier(否则 animation 非法) */
  .collab-picker-overlay:not(.collab-picker-side) .collab-picker-panel {
    animation: collabSheetIn var(--transit-normal);
  }

  /* 资料选择器抽屉:贴底过渡(遮罩淡入在通用规则,这里只管面板自下而上滑) */
  .collab-picker-overlay.collab-picker-side .collab-picker-panel {
    transform: translate3d(0, 100%, 0);
    will-change: transform;
    transition: transform var(--rp-in) var(--rp-ease-out);
  }
  .collab-picker-overlay.collab-picker-side.is-active .collab-picker-panel {
    transform: translate3d(0, 0, 0);
  }
  .collab-picker-overlay.collab-picker-side.is-closing .collab-picker-panel {
    transform: translate3d(0, 100%, 0);
    transition: transform var(--rp-out) var(--rp-ease-in);
  }

  /* 预览弹窗移动端:留更小边距 */
  .rp-preview-modal { padding: var(--space-4); }
}