/* ============================================================================
   汇报台样式（.bf-*）：项目卡片 / 播放舞台 / 多窗口 / 目录窗格 / 笔记窗格
   全部沿用 app.css 的设计令牌，浅色深色主题通用。
   ========================================================================== */

/* ---------------------------------------------------------------- 项目列表 */
.bf-page .page-title { margin: 0; }

.bf-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}
.bf-card-name { font-size: 15px; font-weight: 650; color: var(--ink); }

.bf-chip {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-line);
  white-space: nowrap;
}
.bf-chip.dim { background: var(--surface-2); color: var(--muted); border-color: var(--line); }
.bf-chip.warn { background: var(--warn-soft); color: #92600a; border-color: var(--warn-line); }

.bf-winman {
  margin-top: 12px;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}
.bf-winman-title { font-size: 13px; font-weight: 600; color: var(--ink-2); }

.bf-winrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  background: var(--surface);
}
.bf-winrow-title { font-size: 13px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bf-winrow-sub { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 40%; }

/* ---------------------------------------------------------------- 播放模式 */
.bf-play {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: calc(100vh - 52px);
}
.bf-play-top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  flex: none;
}
.bf-play-top .sp, .row .sp, .bf-note-head .sp { flex: 1; }
.bf-play-title { font-weight: 650; font-size: 14px; color: var(--ink); }

.bf-play-main {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* 舞台：窗口容器（深底衬托内容窗口） */
.bf-stage {
  position: relative;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 500px at 50% -10%, rgba(13, 122, 95, 0.05), transparent 60%),
    var(--surface-2);
}

/* ---------------------------------------------------------------- 多窗口 */
.bf-win {
  position: absolute;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  min-width: 200px;
  min-height: 120px;
}
.bf-win.focus { border-color: var(--accent-line); box-shadow: var(--shadow-lg); }
.bf-win.max { border-radius: 0; }

.bf-win-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 8px 0 12px;
  background: var(--surface-3);
  border-bottom: 1px solid var(--line);
  cursor: grab;
  flex: none;
  touch-action: none;
  user-select: none;
}
.bf-win.max .bf-win-bar { cursor: default; }
.bf-win-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
}
.bf-win-sp { flex: 1; }

.bf-win-body {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--surface);
}

.bf-win-grip {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 18px;
  height: 18px;
  cursor: nwse-resize;
  touch-action: none;
  background:
    linear-gradient(135deg, transparent 50%, var(--faint) 50%, var(--faint) 56%, transparent 56%, transparent 66%, var(--faint) 66%, var(--faint) 72%, transparent 72%);
  opacity: 0.55;
  z-index: 3;
}
.bf-win.max .bf-win-grip { display: none; }

/* 窗口内通用 */
.bf-win-dl {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  padding: 5px 8px;
  border-bottom: 1px solid var(--line-soft);
  background: var(--surface-2);
  flex: none;
}
.bf-fallback {
  margin: auto;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.bf-pdf-stage { position: relative; flex: 1; min-height: 0; }
.bf-pdf-holder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: auto;
  padding: 6px;
}
.bf-pdf-canvas { box-shadow: var(--shadow-md); background: #fff; }
.bf-pdf-pager {
  position: absolute;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(4px);
}
.bf-pdf-num { font-size: 12px; color: var(--ink-2); min-width: 52px; text-align: center; }

.bf-frame {
  flex: 1;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}

.bf-itemcard {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  overflow: auto;
}
.bf-itemcard-title { font-size: 16px; font-weight: 650; color: var(--ink); }
.bf-itemcard-desc { font-size: 13px; color: var(--ink-2); white-space: pre-wrap; line-height: 1.7; }

/* ---------------------------------------------------------------- 目录窗格 */
.bf-toc {
  width: 236px;
  flex: none;
  border-left: 1px solid var(--line);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.bf-toc-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 12px 6px;
  border-bottom: 1px solid var(--line-soft);
}
.bf-toc-title { font-weight: 650; font-size: 13px; color: var(--ink); }
.bf-toc-list { flex: 1; overflow: auto; padding: 6px; display: flex; flex-direction: column; gap: 4px; }
.bf-toc-item { display: flex; align-items: stretch; gap: 4px; }
.bf-toc-btn {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  text-align: left;
  padding: 7px 8px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  cursor: pointer;
  font: inherit;
}
.bf-toc-btn:hover { background: var(--surface-2); }
.bf-toc-item.open .bf-toc-btn { background: var(--accent-soft); border-color: var(--accent-line); }
.bf-toc-item.miss .bf-toc-btn { opacity: 0.55; }
.bf-toc-ico { flex: none; color: var(--accent); font-size: 13px; }
.bf-toc-txt { display: flex; flex-direction: column; min-width: 0; }
.bf-toc-name { font-size: 12.5px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bf-toc-sub { font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bf-toc-close {
  flex: none;
  align-self: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
}
.bf-toc-close:hover { color: var(--danger); border-color: var(--danger-line); background: var(--danger-soft); }
.bf-toc-foot { padding: 8px 12px; border-top: 1px solid var(--line-soft); }

.btn.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ---------------------------------------------------------------- 笔记窗格 */
.bf-note {
  position: fixed;
  top: 64px;
  right: 16px;
  width: 400px;
  height: 560px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.bf-note[hidden] { display: none; }
.bf-note-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px 6px;
  cursor: grab;
  touch-action: none;
  user-select: none;
  flex: none;
}
.bf-note-head.dragging { cursor: grabbing; }
.bf-note.max { border-radius: 0; }
.bf-note-grip {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 18px;
  height: 18px;
  cursor: nwse-resize;
  touch-action: none;
  background:
    linear-gradient(135deg, transparent 50%, var(--faint) 50%, var(--faint) 56%, transparent 56%, transparent 66%, var(--faint) 66%, var(--faint) 72%, transparent 72%);
  opacity: 0.55;
  z-index: 3;
}
.bf-note.max .bf-note-grip { display: none; }
.bf-note-tab {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
}
.bf-note-tab.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.bf-note-hint { padding: 0 12px 6px; }
.bf-note-list {
  flex: none;
  max-height: 30%;
  overflow: auto;
  padding: 4px 8px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-bottom: 1px solid var(--line-soft);
}
.bf-note-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
}
.bf-note-item:hover { background: var(--surface-2); }
.bf-note-item.on { background: var(--accent-soft); border-color: var(--accent-line); }
.bf-note-item-title { font-size: 12.5px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.bf-note-editor {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px 12px;
}
.bf-note-editor .row { align-items: center; }
.bf-note-body {
  flex: 1;
  min-height: 120px;
  resize: none;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
}
.bf-note-preview {
  flex: 1;
  min-height: 120px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.7;
  background: var(--surface-2);
}
.bf-note-preview img { max-width: 100%; border-radius: 6px; }
.bf-note-preview h1, .bf-note-preview h2, .bf-note-preview h3 { margin: 0.6em 0 0.3em; }
.bf-note-preview p { margin: 0.4em 0; }
.bf-note-preview ul, .bf-note-preview ol { padding-left: 1.4em; margin: 0.4em 0; }
.bf-note-preview code { font-family: var(--mono); font-size: 12px; background: var(--surface-3); padding: 1px 5px; border-radius: 5px; }
.bf-note-preview pre { background: var(--surface-3); padding: 8px 10px; border-radius: 8px; overflow: auto; }
.bf-note-preview table { border-collapse: collapse; }
.bf-note-preview th, .bf-note-preview td { border: 1px solid var(--line); padding: 4px 8px; }

/* ---------------------------------------------------------------- 附件选择器 */
.bf-pick-list {
  max-height: 52vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 4px;
}
.bf-pick-row {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
}
.bf-pick-row:hover { background: var(--surface-2); }
.bf-pick-name { font-size: 13px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bf-pick-meta { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------------------------------------------------------------- 窄屏 */
@media (max-width: 760px) {
  .bf-toc { width: 168px; }
  .bf-play-top { flex-wrap: wrap; }
  .bf-note { left: 8px !important; width: calc(100vw - 16px) !important; }
}