/* ---------- 板块页（学习讨论/日常吐槽）固定布局 ---------- */
.page-board { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }
.page-board .flash { flex-shrink: 0; }
.page-board main.container {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 20px 20px 0;
}
.page-board .board-hero,
.page-board .post-new-row,
.page-board .login-tip,
.page-board .pager,
.page-board .footer { flex-shrink: 0; }
.page-board .post-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: #cdbdf2 transparent;
}
.page-board .post-list::-webkit-scrollbar { width: 10px; }
.page-board .post-list::-webkit-scrollbar-track { background: transparent; margin: 6px 0; }
.page-board .post-list::-webkit-scrollbar-thumb {
  background: #d7cbf5;
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.page-board .post-list::-webkit-scrollbar-thumb:hover { background: var(--purple); background-clip: padding-box; }
html[data-theme="dark"] .page-board .post-list { scrollbar-color: #4a3d6b transparent; }
html[data-theme="dark"] .page-board .post-list::-webkit-scrollbar-thumb { background: #4a3d6b; background-clip: padding-box; }

/* ---------- 消息页：整屏布局，与前三个页面统一 ---------- */
.page-msg { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }
.page-msg main.container {
  max-width: none;
  width: 100%;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 24px 44px 0;
}
.page-msg .footer { flex-shrink: 0; }
@media (max-width: 720px) {
  .page-msg main.container { padding: 16px 14px 0; }
}

/* ---------- 资源页：头部固定，仅卡片区滚动 ---------- */
.page-files { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }
.page-files .flash { flex-shrink: 0; }
.page-files main.container {
  max-width: none;
  width: 100%;
  margin: 0;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 8px 24px 0 12px;
}
.page-files .hero { flex-shrink: 0; padding: 2px 0 8px; }
.page-files .hero-head { margin-bottom: 16px; }
.page-files .tag-bar-wrap { margin-top: 10px; }
.page-files .result-note { margin-top: 8px; }
.page-files .footer { flex-shrink: 0; }
.page-files .file-grid { width: 100%; max-width: 1240px; margin: 8px auto 0; }
.page-files .file-grid .empty { grid-column: 1 / -1; }
.page-files .file-group-title { top: 0; width: 100%; max-width: 1240px; margin-left: auto; margin-right: auto; }
/* 电脑（宽屏）端：文件卡片行更宽 */
@media (min-width: 1200px) {
  .page-files .file-grid { max-width: 1440px; }
  .page-files .file-group-title { max-width: 1440px; }
}

.files-body { flex: 1; min-height: 0; width: 100%; display: flex; align-items: stretch; gap: 0; }
.file-side {
  position: fixed;
  left: 12px;
  bottom: 56px;
  z-index: 85;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
  width: auto;
  max-width: calc(100vw - 80px);
  margin: 0;
  padding: 0;
}
.file-side .side-btn { width: auto; padding: 8px 12px; font-size: 13px; box-shadow: var(--shadow-hover); }
.file-side .side-div { display: none; }
.side-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1.5px solid transparent;
  background: var(--purple);
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  width: 100%;
}
.side-btn.side-white { background: #fff; border-color: #c9bde3; color: var(--text); }
.side-btn.side-white:hover { border-color: var(--purple); background: var(--purple-soft); }
.side-btn.side-yellow { background: #f7e3a3; border-color: #dfc268; color: #6b5208; }
.side-btn.side-yellow:hover { background: #f2da8c; }
.side-btn.side-purple { background: #d9c9fb; border-color: #b295ef; color: #4a2b9e; }
.side-btn.side-purple:hover { background: #cdb9f7; }
.side-btn.side-red { background: #f8cfcf; border-color: #e79f9f; color: #a12d2d; }
.side-btn.side-red:hover { background: #f4bfbf; }
.side-btn.on { background: var(--purple-dark); border-color: var(--purple-dark); color: #fff; }
.side-btn.side-white.on { background: #ddd3f0; border-color: #c3b2e6; color: #14101d; }
.side-btn.side-yellow.on { background: #e6c655; border-color: #d3b03a; color: #6b5208; }
.side-btn.side-purple.on { background: #b39af2; border-color: #9c81ea; color: #4a2b9e; }
.side-btn.side-red.on { background: #eea0a0; border-color: #e28787; color: #a12d2d; }
.side-div { width: 100%; height: 1px; background: #ebe5f5; margin: 3px 0; border: none; }
/* 点卡片：居中弹窗 + 下方依次弹出的工具栏 */
.card-view-mask {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px;
  background: rgba(30, 20, 50, 0.45);
  overflow-y: auto;
  animation: cvFade 0.15s ease both;
}
.card-view-mask:not([hidden]) { display: flex; }
@keyframes cvFade { from { opacity: 0; } to { opacity: 1; } }
.card-view {
  position: relative;
  width: min(860px, 94vw);
  max-height: 84vh;
  overflow-y: auto;
  background: var(--card);
  border-radius: 18px;
  box-shadow: var(--shadow-hover);
  padding: 34px 40px;
}
.card-view .file-card { padding: 0; box-shadow: none; transform: none; border: none; background: transparent; gap: 18px; }
.card-view .file-card * { pointer-events: none; }
.card-view .file-stats { display: none; }
.card-view .file-title { white-space: normal; overflow: visible; text-overflow: clip; font-size: 21px; line-height: 1.7; }
.card-view .file-desc { min-height: 0; -webkit-line-clamp: unset; display: block; overflow: visible; font-size: 15px; line-height: 2; }
.card-view .file-meta { font-size: 13.5px; line-height: 1.7; gap: 6px 22px; }
.card-view .file-type { font-size: 13px; padding: 4px 12px; }
/* 点卡片弹窗内的 AI 摘要 */
.card-view-comments {
  margin-top: 22px;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}
.cv-ai { margin-top: 18px; background: var(--purple-soft); border: 1px solid var(--purple-border); border-radius: 12px; padding: 14px 16px; }
.cv-ai-title { font-size: 13px; font-weight: 700; color: var(--purple-dark); margin-bottom: 6px; }
.cv-ai-body { font-size: 14px; line-height: 1.8; color: var(--text); white-space: pre-wrap; word-break: break-word; }
.cv-ai-ask { display: block; margin: 10px 0 0 auto; border: 1px solid var(--gold); background: var(--gold-soft); color: var(--gold-dark); font-family: inherit; font-size: 12.5px; font-weight: 600; padding: 5px 12px; border-radius: 999px; cursor: pointer; }
.cv-ai-ask:hover { background: var(--gold); color: #fff; }
.cv-stats { display: flex; align-items: center; gap: 18px; margin-bottom: 10px; }
.cv-stat { font-size: 13.5px; color: var(--sub); }
.cv-stat b { color: var(--purple-dark); font-size: 14.5px; margin-left: 2px; }
.cv-comments-list .file-comment:first-child,
.cv-comments-more .file-comment:first-child { padding-top: 0; }
.cv-comments-more[hidden] { display: none; }
.cv-comments-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  border: 1.5px solid var(--purple-border);
  background: var(--purple-soft);
  color: var(--purple-dark);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s;
}
.cv-comments-toggle:hover { border-color: var(--purple); }
.cv-comments-toggle .cv-chev { display: inline-block; transition: transform 0.2s; }
.cv-comments-toggle.open .cv-chev { transform: rotate(180deg); }
.card-view-close { position: absolute; top: 8px; right: 12px; border: none; background: none; font-size: 24px; line-height: 1; color: var(--sub); cursor: pointer; z-index: 1; }
.card-view-close:hover { color: var(--purple); }
.card-view-tools { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.card-view-tools .side-btn { width: auto; padding: 9px 14px; font-size: 13.5px; box-shadow: var(--shadow-hover); }
.card-view-tools .side-btn.disabled { filter: grayscale(1); opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.card-view-hint {
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--purple-soft);
  color: var(--purple-dark);
  border: 1.5px dashed var(--purple-dark);
}
@keyframes cardPop {
  from { opacity: 0; transform: translateY(-8px) scale(0.8); }
  to { opacity: 1; transform: none; }
}
.card-view-tools.anim .side-btn { animation: cardPop 0.2s cubic-bezier(0.2, 0.9, 0.3, 1.3) both; }
.card-view-tools.anim .side-btn:nth-child(1) { animation-delay: 0ms; }
.card-view-tools.anim .side-btn:nth-child(2) { animation-delay: 60ms; }
.card-view-tools.anim .side-btn:nth-child(3) { animation-delay: 120ms; }
.card-view-tools.anim .side-btn:nth-child(4) { animation-delay: 180ms; }
.card-view-tools.anim .side-btn:nth-child(5) { animation-delay: 240ms; }
.card-view-tools.anim .side-btn:nth-child(6) { animation-delay: 300ms; }
.file-side { display: none; }

.files-main {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
  overflow-y: auto;
  padding: 0 8px 18px;
  scrollbar-width: thin;
  scrollbar-color: #cdbdf2 transparent;
}
.files-main::-webkit-scrollbar { width: 10px; }
.files-main::-webkit-scrollbar-track { background: transparent; margin: 4px 0; }
.files-main::-webkit-scrollbar-thumb {
  background: #d7cbf5;
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.files-main::-webkit-scrollbar-thumb:hover { background: var(--purple); background-clip: padding-box; }
html[data-theme="dark"] .files-main { scrollbar-color: #4a3d6b transparent; }
html[data-theme="dark"] .files-main::-webkit-scrollbar-thumb { background: #4a3d6b; background-clip: padding-box; }

/* 全页滚动模式：整页滚动而非只滚动卡片区 */
.page-files.scroll-full { height: auto; min-height: 100vh; overflow: visible; }
.page-files.scroll-full main.container { display: block; overflow: visible; min-height: 0; flex: 1 1 auto; }
.page-files.scroll-full .files-body { align-items: flex-start; }
.page-files.scroll-full .files-main { overflow: visible; }
.page-files.scroll-full .file-group-title { top: var(--topbar-h, 46px); }
html.scroll-full-root { scrollbar-width: none; }
html.scroll-full-root::-webkit-scrollbar { width: 0; height: 0; }
.mode-hint {
  position: sticky;
  top: 0;
  z-index: 4;
  background: var(--gold-soft);
  color: var(--gold-dark);
  border: 1px solid #f0e0b0;
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 13px;
  margin-bottom: 12px;
}
.files-main.mode-preview .file-card,
.files-main.mode-download .file-card,
.files-main.mode-like .file-card,
.files-main.mode-comment .file-card,
.files-main.mode-edit .file-card,
.files-main.mode-delete .file-card { cursor: pointer; }
.files-main.mode-edit .file-card[data-can-edit="0"],
.files-main.mode-delete .file-card[data-can-delete="0"] {
  opacity: 0.38;
  filter: grayscale(0.7);
  pointer-events: none;
}

/* ---------- 文件评论 ---------- */
.file-comment { padding: 10px 0; border-bottom: 1px solid var(--border); }
.file-comment:last-child { border-bottom: none; }
.file-comment-head { display: flex; align-items: center; gap: 10px; }
.fc-author { font-weight: 600; font-size: 13.5px; color: var(--purple-dark); }
.fc-time { font-size: 12px; color: var(--sub); margin-left: auto; }
.fc-content { font-size: 14px; margin-top: 4px; white-space: pre-wrap; word-break: break-word; }
.comment-form { margin-top: 12px; }
.file-comment.depth2 { margin-left: 18px; border-left: 2px solid var(--border); padding-left: 10px; }
.file-comment.depth3 { margin-left: 36px; border-left: 2px solid var(--border); padding-left: 10px; }
.comment-children { margin-top: 4px; }
.comment-like { font-size: 12.5px; color: var(--sub); }
.comment-like.on { color: var(--gold-dark); font-weight: 700; }
.reply-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--purple-soft);
  color: var(--purple-dark);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12.5px;
  margin-bottom: 8px;
}
.reply-chip[hidden] { display: none; }
.reply-cancel { background: none; border: none; color: var(--purple-dark); font-size: 15px; line-height: 1; cursor: pointer; padding: 0 2px; }
.comment-tools { position: relative; display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.comment-tools .anon-check { margin: 0; }
.comment-tools #cm-media-btn { margin-right: auto; }
.cm-ta-wrap { position: relative; }
.cm-grip { display: block; margin: 0 auto; width: 44px; height: 13px; border: none; background: transparent; cursor: ns-resize; padding: 0; touch-action: none; position: relative; }
.cm-grip::before { content: '\005E'; position: absolute; left: 50%; top: -1px; transform: translateX(-50%) scaleX(1.9); transform-origin: center; color: var(--purple); font-size: 17px; font-weight: 700; line-height: 1; }
.cm-ta-wrap textarea { display: block; margin-bottom: 0; resize: none !important; border-radius: 0 0 10px 10px; }
.comment-form .cm-ta-wrap { margin-bottom: 8px; }
.cm-ta-wrap .cm-clear { position: absolute; right: 10px; bottom: 10px; width: 26px; height: 26px; border: none; border-radius: 50%; background: var(--danger-soft); color: var(--danger); font-size: 16px; line-height: 1; cursor: pointer; display: none; align-items: center; justify-content: center; }
.cm-ta-wrap .cm-clear:hover { background: var(--danger); color: #fff; }
.cm-ta-wrap.has-text .cm-clear { display: flex; }
.stat-chip.draft-chip { background: var(--danger-soft); border-color: #f0bdbd; color: #e07f7f; }
.stat-chip.draft-chip:hover { background: #f9dcdc; }
.stat-chip.draft-chip svg { display: block; flex-shrink: 0; }
html[data-theme="dark"] .stat-chip.draft-chip { background: var(--danger-soft); border-color: #a05a5a; color: #e59a9a; }
html[data-theme="dark"] .stat-chip.draft-chip:hover { background: #4a2a2a; }
.emoji-btn {
  border: 1.5px solid var(--border);
  background: #fff;
  border-radius: 10px;
  font-size: 18px;
  line-height: 1;
  padding: 5px 10px;
  cursor: pointer;
}
.emoji-btn:hover { border-color: var(--purple); }
.emoji-panel {
  position: fixed;
  z-index: 400;
  width: 328px;
  max-width: 82vw;
  max-height: 216px;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
}
.emoji-panel[hidden] { display: none; }
.emoji-item {
  border: none;
  background: none;
  font-size: 20px;
  line-height: 1;
  padding: 5px 0;
  border-radius: 8px;
  cursor: pointer;
}
.emoji-item:hover { background: var(--purple-soft); }
html[data-theme="dark"] .emoji-btn { background: var(--card); }
.comment-form textarea {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 9px 13px;
  font-family: inherit;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  resize: vertical;
  outline: none;
  margin-bottom: 8px;
}
.comment-form textarea:focus { border-color: var(--purple); box-shadow: 0 0 0 3px var(--purple-soft); }

/* ---------- 编辑器工具栏 ---------- */
.editor-wrap { position: relative; }
.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  border: 1.5px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
  padding: 5px 6px;
  background: var(--card);
}
.et-btn {
  background: none;
  border: none;
  border-radius: 6px;
  padding: 4px 9px;
  color: var(--sub);
  font-size: 13.5px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.et-btn:hover { background: var(--purple-soft); color: var(--purple); }
.et-btn:disabled { opacity: 0.5; cursor: wait; }
.et-btn.et-on { background: var(--purple-soft); color: var(--purple); }
.et-sep { width: 1px; height: 18px; background: var(--border); margin: 0 5px; }
.et-right { margin-left: auto; }
.editor-wrap textarea {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: 0 0 10px 10px;
  padding: 9px 13px;
  font-size: 14.5px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  resize: vertical;
  outline: none;
  line-height: 1.6;
}
.editor-wrap textarea:focus { border-color: var(--purple); box-shadow: 0 0 0 3px var(--purple-soft); }
.editor-preview {
  border: 1.5px solid var(--border);
  border-top: none;
  border-radius: 0 0 10px 10px;
  padding: 12px 14px;
  min-height: 120px;
  background: #fff;
}
html[data-theme="dark"] .editor-wrap textarea,
html[data-theme="dark"] .editor-preview { background: #221c33; color: var(--text); }
.markdown-body video, .markdown-body audio {
  max-width: 100%;
  border-radius: 10px;
  display: block;
  margin: 0.6em 0;
}