/* ===== 编程知识库 - 全局重置 & 变量 ===== */
:root {
  --bg: #0a0a1a;
  --bg2: #12122a;
  --bg3: #1a1a3a;
  --surface: rgba(20,20,60,0.75);
  --surface-hover: rgba(40,40,100,0.6);
  --border: rgba(100,100,255,0.15);
  --text: #e0e0ff;
  --text2: #9999cc;
  --text3: #6666aa;
  --accent: #00d4ff;
  --accent2: #7b2ff7;
  --accent3: #ff2d95;
  --green: #00e676;
  --orange: #ffab00;
  --red: #ff5252;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

span[data-hl="cmt"] { color: #666; }
span[data-hl="str"] { color: #ffab00; }
span[data-hl="kw"] { color: #00d4ff; }
span[data-hl="num"] { color: #ff2d95; }
span[data-hl="pre"] { color: #ff2d95; font-weight: 600; }      /* 预处理器 #include */
span[data-hl="fn"] { color: #a78bfa; }                          /* 函数名 */
span[data-hl="type"] { color: #4ade80; }                        /* 类型名 */
span[data-hl="op"] { color: #f472b6; }                          /* 运算符 */

/* 代码块样式（全局兜底） */
.code-block {
  background: #0d0d24;
  color: #e0e0ff;
  padding: 16px 20px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.7;
  border: 1px solid rgba(100,100,255,0.1);
  margin: 12px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.8;
}

/* ===== 导航栏 ===== */
.lg-navbar {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 9999;
  background: rgba(10,10,30,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.lg-navbar .sn-logo {
  font-size: 20px; font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
  margin-right: auto;
  text-decoration: none;
}

.lg-navbar .sn-links { display: flex; gap: 20px; align-items: center; }

.lg-navbar .sn-links a {
  color: var(--text2); font-size: 14px; text-decoration: none;
  transition: color 0.2s; padding: 4px 0;
}

.lg-navbar .sn-links a:hover,
.lg-navbar .sn-links a.active { color: var(--accent); }

.lg-navbar .sn-btn {
  padding: 6px 18px;
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff !important;
  border-radius: 16px;
  font-weight: 600;
  font-size: 13px !important;
}

.lg-navbar .sn-btn:hover { box-shadow: 0 0 16px rgba(0,212,255,0.4); }

/* ===== 容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* ===== 页面头部 ===== */
.page-header { text-align: center; padding: 20px 0 10px; }

.page-header h1 { font-size: 32px; font-weight: 800; margin-bottom: 8px; }

.page-header .subtitle { color: var(--text2); font-size: 16px; }

/* ===== Tab 切换 ===== */
.tab-bar {
  display: flex; justify-content: center; gap: 0;
  margin: 20px 0 24px;
  background: var(--bg2);
  border-radius: var(--radius);
  padding: 4px;
  max-width: 320px; margin-left: auto; margin-right: auto;
}

.tab-btn {
  flex: 1;
  padding: 10px 24px;
  border: none;
  background: transparent;
  color: var(--text2);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.3s;
}

.tab-btn.active {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 16px rgba(0,212,255,0.3);
}

.tab-btn:hover:not(.active) { color: var(--text); }

.tab-panel { display: none; }

.tab-panel.active { display: block; }

/* ===== 学习布局 ===== */
.learn-layout {
  display: flex;
  gap: 24px;
  min-height: 500px;
}

.learn-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  max-height: 600px;
  display: flex;
  flex-direction: column;
}

.sidebar-search {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-search input {
  width: 100%; padding: 8px 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 13px;
  outline: none;
}

.sidebar-search input:focus { border-color: var(--accent); }

.topic-tree {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.topic-tree::-webkit-scrollbar { width: 4px; }

.topic-tree::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.topic-item {
  display: block;
  width: 100%;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text2);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.topic-item:hover { color: var(--text); background: var(--surface); }

.topic-item.active { color: var(--accent); border-left-color: var(--accent); background: rgba(0,212,255,0.08); }

/* 已学完标记 */
.topic-item.done { opacity: 0.85; }
.topic-item.done .topic-label { color: var(--text2); }
.topic-item.done .topic-check { color: var(--green); }

/* ===== 分类标题（可折叠） ===== */
.topic-cat {
  color: var(--text3); font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  padding: 12px 16px 4px; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: 6px;
  transition: color 0.2s;
}

.topic-cat:hover { color: var(--text2); }

.topic-cat .cat-icon { font-size: 8px; color: var(--text3); transition: transform 0.2s; }

.topic-cat.collapsed .cat-icon { transform: rotate(-90deg); }

/* ===== 搜索计数 ===== */
.sidebar-search .search-count { font-size: 11px; color: var(--text3); padding: 4px 12px 0; display: none; }

.sidebar-search .search-count.show { display: block; }

/* ===== 学习进度条 ===== */
.sidebar-progress {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.progress-label { font-size: 12px; color: var(--text3); font-weight: 500; }
.progress-pct { font-size: 13px; color: var(--accent); font-weight: 700; }
.progress-bar {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 4px;
  transition: width 0.6s ease;
}
.progress-detail { font-size: 11px; color: var(--text3); margin-top: 4px; text-align: right; }

/* 折叠时隐藏进度条 */
.learn-sidebar.collapsed .sidebar-progress { display: none; }

/* ===== 学习内容 ===== */
.learn-content {
  flex: 1;
  background: var(--bg2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 32px;
  min-height: 500px;
  overflow-y: auto;
  max-height: 800px;
}

.learn-content::-webkit-scrollbar { width: 6px; }

.learn-content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.learn-content h2 { font-size: 24px; font-weight: 700; margin-bottom: 16px; color: var(--accent); }

.learn-content h3 { font-size: 18px; font-weight: 600; margin: 20px 0 10px; color: var(--text); }

.learn-content h4 { font-size: 15px; font-weight: 600; margin: 14px 0 8px; }

.learn-content p { margin-bottom: 12px; font-size: 14px; color: var(--text); line-height: 1.9; }

.learn-content ul, .learn-content ol { margin: 8px 0 12px 20px; }

.learn-content li { margin-bottom: 6px; font-size: 14px; color: var(--text2); }

.learn-content .code-block {
  background: #0d0d24;
  border: 1px solid rgba(100,100,255,0.1);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 12px 0;
  overflow-x: auto;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.7;
  color: #e0e0ff;
  white-space: pre-wrap;
  word-break: break-word;
}

.learn-content .note-box {
  background: rgba(0,212,255,0.08);
  border-left: 4px solid var(--accent);
  padding: 12px 16px;
  margin: 12px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
}

.learn-content .note-box.warn { border-left-color: var(--orange); background: rgba(255,171,0,0.08); }

.learn-content .note-box.tip { border-left-color: var(--green); background: rgba(0,230,118,0.06); }

.welcome-tip { text-align: center; padding: 40px 20px; }

.welcome-tip h2 { font-size: 22px; margin-bottom: 12px; }

.welcome-tip p { color: var(--text2); }

.quick-links { margin-top: 20px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.quick-links span {
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
}

.quick-links span:hover { border-color: var(--accent); background: var(--surface-hover); }

/* ===== 练习 - 筛选栏 ===== */
.filter-bar {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.filter-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.filter-row select, .filter-row input[type="text"] {
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  outline: none;
  min-width: 120px;
}

.filter-row select:focus, .filter-row input:focus { border-color: var(--accent); }

.filter-row select option { background: var(--bg2); color: var(--text); }

.filter-row input[type="text"] { flex: 1; min-width: 160px; }

.result-count { color: var(--text3); font-size: 13px; white-space: nowrap; }

/* ===== 题目列表 ===== */
.problem-list { display: flex; flex-direction: column; gap: 10px; }

.problem-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: all 0.2s;
}

.problem-card:hover { border-color: var(--accent); background: var(--surface); transform: translateX(4px); }

.problem-card .p-id { color: var(--text3); font-size: 13px; font-family: monospace; min-width: 50px; }

.problem-card .p-title { flex: 1; font-size: 14px; font-weight: 600; }

.problem-card .p-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.problem-card .tag {
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.tag-gesp { background: rgba(0,212,255,0.15); color: var(--accent); }

.tag-cspj { background: rgba(123,47,247,0.2); color: #b388ff; }

.tag-csps { background: rgba(255,45,149,0.2); color: var(--accent3); }

.tag-cs { background: rgba(255,171,0,0.15); color: var(--orange); }

.tag-fs { background: rgba(0,230,118,0.15); color: var(--green); }

.tag-easy { background: rgba(0,230,118,0.12); color: var(--green); }

.tag-normal { background: rgba(0,212,255,0.12); color: var(--accent); }

.tag-medium { background: rgba(255,171,0,0.12); color: var(--orange); }

.tag-hard { background: rgba(255,82,82,0.12); color: var(--red); }

/* ===== 分页 ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
}

.pagination button {
  padding: 6px 14px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.pagination button:hover { border-color: var(--accent); color: var(--accent); }

.pagination button.active { background: var(--accent); color: #000; border-color: var(--accent); }

/* ===== 题目详情弹窗 ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 99999;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 20px;
  overflow-y: auto;
}

.modal-overlay.show { display: flex; }

.modal-content {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 800px;
  width: 100%;
  padding: 28px 32px;
  position: relative;
  animation: modalIn 0.25s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.96); }

  to { opacity: 1; transform: translateY(0) scale(1); }

}

.modal-close {
  position: absolute; top: 16px; right: 20px;
  font-size: 22px; cursor: pointer; color: var(--text3);
  transition: color 0.2s;
}

.modal-close:hover { color: var(--text); }

.modal-body h2 { font-size: 20px; margin-bottom: 12px; }

.modal-body .p-meta { color: var(--text2); font-size: 13px; margin-bottom: 16px; display: flex; gap: 16px; flex-wrap: wrap; }

.modal-body .p-section { margin-bottom: 16px; }

.modal-body .p-section h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; color: var(--accent); }

.modal-body .p-section p, .modal-body .p-section li { font-size: 14px; line-height: 1.9; }

.modal-body .sample-box {
  background: #0d0d2b;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: monospace;
  font-size: 13px;
  white-space: pre-wrap;
  margin: 6px 0;
  color: #c0c0ee;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .learn-layout { flex-direction: column; }

  .learn-sidebar { width: 100%; max-height: 200px; }

  .learn-content { padding: 20px; }

  .filter-row { flex-direction: column; }

  .filter-row select, .filter-row input { width: 100%; min-width: unset; }

  .problem-card { flex-wrap: wrap; }

  .lg-navbar { padding: 0 12px; gap: 10px; overflow-x: auto; }

  .lg-navbar .sn-links { gap: 8px; }

  .lg-navbar .sn-links a { font-size: 12px; white-space: nowrap; }

}

/* ===== 侧边栏折叠 ===== */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 6px;
  border-bottom: 1px solid var(--border);
}

.sidebar-title { font-size: 13px; font-weight: 700; color: var(--text2); }

.sidebar-toggle {
  background: none; border: 1px solid var(--border);
  color: var(--text3); font-size: 12px; cursor: pointer;
  border-radius: 4px; padding: 2px 8px; transition: all 0.2s;
}

.sidebar-toggle:hover { border-color: var(--accent); color: var(--accent); }

.learn-sidebar.collapsed .topic-tree,
.learn-sidebar.collapsed .sidebar-search { display: none; }

.learn-sidebar.collapsed { width: 48px; min-width: unset; }

.learn-sidebar.collapsed .sidebar-title { display: none; }

.learn-sidebar.collapsed .sidebar-toggle { transform: rotate(180deg); }

@media (max-width: 768px) {
  .learn-sidebar.collapsed { width: 100%; max-height: 44px; }

}

/* ===== 难度色标 ===== */
.problem-card .diff-indicator {
  width: 4px; height: 32px; border-radius: 2px; flex-shrink: 0;
}

.diff-easy .diff-indicator { background: #00e676; box-shadow: 0 0 6px rgba(0,230,118,0.3); }

.diff-normal .diff-indicator { background: #00d4ff; box-shadow: 0 0 6px rgba(0,212,255,0.3); }

.diff-medium .diff-indicator { background: #ffab00; box-shadow: 0 0 6px rgba(255,171,0,0.3); }

.diff-hard .diff-indicator { background: #ff5252; box-shadow: 0 0 6px rgba(255,82,82,0.3); }

/* ===== 收藏按钮 ===== */
.bookmark-btn {
  background: none; border: 1.5px solid var(--border);
  color: var(--text3); font-size: 13px; cursor: pointer;
  border-radius: 8px; padding: 4px 12px;
  transition: all 0.2s; margin-left: auto; white-space: nowrap;
}

.bookmark-btn:hover { border-color: #ffab00; color: #ffab00; }

.bookmark-btn.bookmarked { border-color: #ffab00; background: rgba(255,171,0,0.12); color: #ffab00; }

.bookmark-btn .star { transition: transform 0.2s; display: inline-block; }

.bookmark-btn:hover .star { transform: scale(1.3); }

.bookmark-btn.bookmarked .star { transform: scale(1.1); }

.problem-list .bookmark-indicator { color: #ffab00; font-size: 14px; margin-left: 4px; }

/* ===== 相关题目列表 ===== */
.related-problems { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border); }

.related-problems h3 { font-size: 15px; margin-bottom: 12px; color: var(--accent); }

.related-problems .rp-item {
  display: inline-block; padding: 4px 14px; margin: 0 6px 8px 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; font-size: 13px; color: var(--text2);
  cursor: pointer; transition: all 0.2s; text-decoration: none;
}

.related-problems .rp-item:hover { border-color: var(--accent); color: var(--accent); }

/* ===== 练习模式 ===== */
.practice-actions {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 16px; padding: 12px 16px;
  background: var(--bg2); border-radius: var(--radius);
  border: 1px solid var(--border);
}

.pa-btn {
  padding: 8px 20px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--surface);
  color: var(--text); font-size: 14px; cursor: pointer;
  transition: all 0.2s; white-space: nowrap;
}

.pa-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,212,255,0.08); }

.pa-btn.active { border-color: var(--accent); background: rgba(0,212,255,0.12); color: var(--accent); }

/* Quiz Panel */
.quiz-panel {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 16px;
  overflow: hidden;
}

.quiz-header {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 16px; background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.quiz-progress { font-size: 14px; font-weight: 700; color: var(--text); }

.quiz-score { font-size: 13px; color: var(--text2); }

.quiz-timer { font-size: 14px; font-weight: 700; color: var(--accent); margin-left: auto; }

.quiz-exit-btn {
  background: none; border: 1px solid var(--border);
  color: var(--text3); font-size: 12px; cursor: pointer;
  border-radius: 4px; padding: 4px 12px; transition: all 0.2s;
}

.quiz-exit-btn:hover { border-color: #ff5252; color: #ff5252; }

.quiz-body {
  padding: 20px 24px; min-height: 200px;
  max-height: 500px; overflow-y: auto;
}

.quiz-body .p-section h3 { font-size: 14px; margin: 12px 0 6px; color: var(--accent); }

.quiz-body .p-section p { font-size: 13px; line-height: 1.7; color: var(--text2); }

.quiz-body .sample-box {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px;
  font-family: 'Courier New', monospace; font-size: 13px;
  white-space: pre; overflow-x: auto; color: var(--text2);
}

.quiz-footer {
  display: flex; gap: 10px; flex-wrap: wrap;
  padding: 12px 16px; border-top: 1px solid var(--border);
  background: var(--surface);
}

.qf-btn {
  padding: 8px 20px; border-radius: var(--radius-sm);
  font-size: 14px; cursor: pointer; border: 1px solid transparent;
  transition: all 0.2s;
}

.qf-reveal { background: var(--accent); color: #0a0a1a; font-weight: 700; }

.qf-reveal:hover { opacity: 0.85; }

.qf-correct { background: rgba(0,230,118,0.15); color: var(--green); border-color: var(--green); }

.qf-correct:hover { background: rgba(0,230,118,0.25); }

.qf-wrong { background: rgba(255,82,82,0.15); color: #ff5252; border-color: #ff5252; }

.qf-wrong:hover { background: rgba(255,82,82,0.25); }

.qf-next { background: var(--accent); color: #0a0a1a; font-weight: 700; }

.qf-next:hover { opacity: 0.85; }

.quiz-result {
  text-align: center; padding: 40px 20px;
}

.quiz-result h2 { font-size: 24px; margin-bottom: 12px; }

.quiz-result .score-ring {
  width: 120px; height: 120px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 32px; font-weight: 900; margin: 16px 0;
  background: conic-gradient(var(--accent) var(--pct), var(--border) 0);
}

.quiz-result .score-ring span {
  width: 100px; height: 100px; border-radius: 50%;
  background: var(--bg2); display: flex; align-items: center; justify-content: center;
}

.quiz-result .detail { color: var(--text2); font-size: 14px; line-height: 1.8; }

/* 代码编辑器样式 */
.editor-section { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 12px; }
.editor-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.editor-label { font-size: 14px; font-weight: 600; color: var(--text1); }
.editor-run-btn { background: #22c55e; color: #fff; border: none; border-radius: 6px; padding: 6px 16px; font-size: 13px; cursor: pointer; }
.editor-run-btn:hover { background: #16a34a; }
.editor-run-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.editor-container { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.editor-container .CodeMirror { height: auto; min-height: 200px; font-size: 14px; background: #1e1e2e; color: #cdd6f4; }
.editor-container .CodeMirror-gutters { background: #181825; border-right: 1px solid #313244; }
.editor-container .CodeMirror-linenumber { color: #6c7086; }
.editor-container .CodeMirror-cursor { border-left-color: #f5e0dc; }
.editor-container .cm-s-default .cm-keyword { color: #cba6f7; }
.editor-container .cm-s-default .cm-def { color: #89b4fa; }
.editor-container .cm-s-default .cm-variable { color: #cdd6f4; }
.editor-container .cm-s-default .cm-variable-2 { color: #89b4fa; }
.editor-container .cm-s-default .cm-comment { color: #6c7086; font-style: italic; }
.editor-container .cm-s-default .cm-string { color: #a6e3a1; }
.editor-container .cm-s-default .cm-number { color: #fab387; }
.editor-container .cm-s-default .cm-operator { color: #89dceb; }
.editor-container .cm-s-default .cm-meta { color: #f38ba8; }
.editor-container .cm-s-default .cm-type { color: #f9e2af; }
.editor-container .cm-s-default .cm-tag { color: #f38ba8; }
.editor-container .cm-s-default .cm-attribute { color: #a6e3a1; }
.editor-container .cm-s-default .cm-builtin { color: #fab387; }
.editor-output { margin-top: 8px; }
.editor-output .output-content { background: #1e1e2e; color: #cdd6f4; padding: 12px; border-radius: 8px; font-size: 13px; font-family: 'Consolas','Courier New',monospace; white-space: pre-wrap; max-height: 200px; overflow-y: auto; }
.editor-output .output-content .success { color: #a6e3a1; }
.editor-output .output-content .error { color: #f38ba8; }
.editor-inline { margin-top: 12px; }

/* SVG 图标统一样式 */
.pa-btn svg, .qf-btn svg, .quick-links svg, .sidebar-title svg, .sidebar-toggle svg,
.quiz-exit-btn svg, .tab-btn svg, .modal-close svg, .page-header svg { display: inline-block; }
.pa-btn svg, .qf-btn svg, .quick-links svg { width: 18px; height: 18px; }
.tab-btn svg { width: 18px; height: 18px; }

@media (max-width: 768px) {
  .practice-actions { flex-direction: column; }

  .quiz-header { flex-direction: column; align-items: flex-start; }

  .quiz-timer { margin-left: 0; }

  .quiz-body { padding: 16px; }

}


.editor-container .CodeMirror pre {
  color: #cdd6f4;
}
.editor-container .CodeMirror-selected {
  background: #45475a;
}
.editor-container .CodeMirror-focused .CodeMirror-selected {
  background: #585b70;
}
.editor-container .CodeMirror-line::selection,
.editor-container .CodeMirror-line > span::selection,
.editor-container .CodeMirror-line > span > span::selection {
  background: #585b70;
}