/* ============ V2 新增组件样式（深浅色复用 --app-* 变量） ============ */

/* ---------- 工具栏吸顶（跟随滚动） ---------- */
.toolbar {
  position: sticky; top: 0; z-index: 40;
  background: var(--app-bg);
  padding: 12px 0 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--app-border);
}

/* ---------- 桌面端左右栏收起 ---------- */
.menu-btn { display: inline-block; margin-right: 10px; } /* 覆盖原"窄屏才显示" */
@media (min-width: 861px) {
  .layout.hide-left .sidebar { display: none; }
}
@media (min-width: 1201px) {
  .layout.hide-right .toc-aside { display: none; }
}

/* ---------- 全文搜索下拉 ---------- */
.search-results {
  margin-top: 6px;
  max-height: 50vh; overflow-y: auto;
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  padding: 6px;
}
.sr-item { padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.sr-item:hover, .sr-item.sel { background: rgba(128,128,128,.15); }
.sr-art { font-size: 11px; opacity: .55; margin-bottom: 2px; }
.sr-title { font-size: 13px; font-weight: 600; margin-bottom: 2px; }
.sr-title mark, .sr-snippet mark { background: #ffe28a; color: inherit; border-radius: 3px; padding: 0 1px; }
html[data-theme="dark"] .sr-title mark, html[data-theme="dark"] .sr-snippet mark { background: #7a5d00; }
.sr-snippet { font-size: 12px; opacity: .85; line-height: 1.5; word-break: break-all; }
.sr-empty { padding: 10px; font-size: 13px; opacity: .6; text-align: center; }

/* ---------- 学习进度 ---------- */
.overall-progress { margin-top: 12px; font-size: 12px; }
.op-row { display: flex; justify-content: space-between; opacity: .8; margin-bottom: 4px; }
.op-bar { height: 6px; border-radius: 4px; background: rgba(128,128,128,.25); overflow: hidden; }
.op-fill { height: 100%; width: 0; border-radius: 4px; background: linear-gradient(90deg, #4caf50, #8bc34a); transition: width .3s; }
.nav li .prog { float: right; font-size: 11px; opacity: .55; }
.nav li .pbar { height: 3px; border-radius: 2px; background: rgba(128,128,128,.25); margin-top: 4px; overflow: hidden; }
.nav li .pfill { height: 100%; background: #4caf50; width: 0; }
.quick-links { display: flex; gap: 6px; margin-top: 10px; }
.quick-links .btn { flex: 1; font-size: 12px; padding: 6px 4px; }

/* ---------- 题目掌握度工具条 ---------- */
.q-tools {
  display: flex; gap: 4px; align-items: center;
  margin: 2px 0 10px; flex-wrap: wrap;
  font-size: 12px;
}
.q-tools .qt {
  border: 1px solid var(--app-border);
  background: var(--app-surface);
  color: var(--app-text);
  border-radius: 20px;
  padding: 2px 9px;
  cursor: pointer;
  opacity: .55;
  font-size: 12px;
  line-height: 1.6;
}
.q-tools .qt:hover { opacity: 1; }
.q-tools .qt.on { opacity: 1; font-weight: 700; }
.q-tools .qt.on.m0 { border-color: #e53935; color: #e53935; }
.q-tools .qt.on.m1 { border-color: #fb8c00; color: #fb8c00; }
.q-tools .qt.on.m2 { border-color: #43a047; color: #43a047; }
.q-tools .qt.on.m3 { border-color: #1e88e5; color: #1e88e5; }
.q-tools .qt.fav.on { border-color: #f6b60d; color: #f6b60d; }
.q-tools .qt-label { opacity: .5; margin-right: 2px; }

/* 题目掌握状态标记（标题左侧圆点） */
h2.qs, h3.qs, h4.qs { position: relative; }
h2.qs::before, h3.qs::before, h4.qs::before {
  content: attr(data-ms);
  margin-right: 6px;
  font-size: .8em;
}
h2.qs[data-ms="★"], h3.qs[data-ms="★"] { }
.flash-target { animation: flashTarget 2s ease-out 1; }
@keyframes flashTarget {
  0% { background: rgba(255, 213, 79, .55); }
  100% { background: transparent; }
}

/* 文章顶部本章进度条 */
.art-progress {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; opacity: .85; margin: 4px 0 8px;
}
.art-progress .op-bar { flex: 1; }

/* ---------- 收藏本 / 错题本 ---------- */
.list-head { display: flex; align-items: baseline; gap: 10px; }
.list-art { margin-top: 22px; font-size: 15px; opacity: .75; }
.list-item {
  display: flex; gap: 8px; align-items: baseline;
  padding: 7px 10px; margin: 4px 0;
  border: 1px solid var(--app-border);
  border-radius: 8px; cursor: pointer;
}
.list-item:hover { background: rgba(128,128,128,.12); }
.list-item .ms { flex-shrink: 0; }
.list-empty { opacity: .6; padding: 30px 0; text-align: center; }

/* ---------- 随机面试浮层 ---------- */
.quiz-overlay[hidden] { display: none; }
.quiz-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
  padding: 18px;
}
.quiz-panel {
  width: min(760px, 100%); max-height: 86vh;
  overflow-y: auto;
  background: var(--app-bg); color: var(--app-text);
  border: 1px solid var(--app-border);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 12px 48px rgba(0,0,0,.35);
  display: flex; flex-direction: column; gap: 14px;
}
.quiz-head { display: flex; align-items: center; gap: 10px; }
.quiz-head b { font-size: 16px; }
.quiz-scope {
  flex: 1; padding: 6px 8px; border-radius: 8px;
  border: 1px solid var(--app-border);
  background: var(--app-surface); color: var(--app-text);
  font-size: 13px;
}
.quiz-q {
  font-size: 19px; font-weight: 700; line-height: 1.55;
  padding: 14px; border-radius: 10px;
  background: rgba(128,128,128,.12);
  min-height: 60px;
}
.quiz-a {
  border: 1px dashed var(--app-border);
  border-radius: 10px; padding: 4px 16px;
  max-height: 46vh; overflow-y: auto;
}
.quiz-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.quiz-actions .quiz-answer { font-weight: 700; }

/* ---------- file:// 提示条 ---------- */
.file-warn {
  margin: 0 0 14px; padding: 10px 14px;
  border: 1px solid #ef6c00; border-radius: 10px;
  background: rgba(239, 108, 0, .12);
  font-size: 13px; line-height: 1.6;
}
.file-warn code { background: rgba(128,128,128,.2); padding: 1px 6px; border-radius: 4px; }