/* =========================================================
   Markdown 语法速查 · 作用域 .page-md-cheatsheet
   ========================================================= */
.page-md-cheatsheet {
  padding: var(--sp-4);
}

/* 顶栏搜索区域 */
.page-md-cheatsheet .mc-header {
  display: flex; gap: var(--sp-3); align-items: center;
  margin-bottom: var(--sp-3);
}
.page-md-cheatsheet .mc-search {
  position: relative; flex: 1; min-width: 0;
}
.page-md-cheatsheet .mc-search svg {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; stroke: var(--c-text-dim); fill: none; stroke-width: 2; pointer-events: none;
}
.page-md-cheatsheet .mc-search input {
  padding-left: 38px; padding-right: 38px; height: 40px;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r);
}
.page-md-cheatsheet .mc-clear-btn {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 26px; height: 26px; border: none; border-radius: var(--r-sm);
  background: transparent; color: var(--c-text-dim); font-size: 14px; cursor: pointer; display: none;
}
.page-md-cheatsheet .mc-clear-btn.show { display: block; }
.page-md-cheatsheet .mc-clear-btn:hover { background: var(--c-surface-3); color: var(--c-text); }

/* 分类与图例 */
.page-md-cheatsheet .mc-cats { display: flex; gap: var(--sp-1); flex-wrap: wrap; margin-bottom: var(--sp-3); }
.page-md-cheatsheet .mc-cats button {
  padding: 6px 13px; font-size: var(--fs-sm); color: var(--c-text-dim);
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-pill); cursor: pointer; transition: .15s;
}
.page-md-cheatsheet .mc-cats button:hover { color: var(--c-text); border-color: var(--c-border-strong); }
.page-md-cheatsheet .mc-cats button.active { color: #fff; background: var(--c-accent); border-color: var(--c-accent); font-weight: 600; }

.page-md-cheatsheet .mc-legend {
  display: flex; gap: 16px; flex-wrap: wrap; font-size: var(--fs-xs); color: var(--c-text-dim);
  padding: 10px 14px; background: var(--c-surface-2); border: 1px solid var(--c-border); border-radius: var(--r); margin-bottom: var(--sp-3);
}
.page-md-cheatsheet .mc-legend span { display: inline-flex; align-items: center; gap: 6px; }
.page-md-cheatsheet .mc-legend i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.page-md-cheatsheet .mc-legend .d1 { background: var(--c-ok); }
.page-md-cheatsheet .mc-legend .d2 { background: var(--c-accent); }
.page-md-cheatsheet .mc-legend .d3 { background: var(--c-warn); }

/* 状态栏 */
.page-md-cheatsheet .mc-meta {
  font-size: var(--fs-sm); color: var(--c-text-dim); margin-bottom: var(--sp-3);
  min-height: 20px; display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap;
}
.page-md-cheatsheet .mc-meta .quick { display: inline-flex; gap: 6px; margin-left: auto; align-items: center; }
.page-md-cheatsheet .mc-meta .quick .label { font-size: 11px; color: var(--c-text-faint); margin-right: 2px; }
/* 通用外链组件在 meta 区域：右侧内联，不继承卡片底部 padding */
.page-md-cheatsheet .mc-meta .ext-actions {
  display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px;
  margin-left: auto; padding: 0;
}

/* 列表网格 */
.page-md-cheatsheet .mc-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); gap: var(--sp-4); align-items: start;
}

/* 卡片 */
.page-md-cheatsheet .mc-card {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-lg);
  overflow: hidden; display: flex; flex-direction: column; transition: .15s;
}
.page-md-cheatsheet .mc-card:hover { border-color: var(--c-border-strong); box-shadow: var(--shadow); }
.page-md-cheatsheet .mc-card-head { padding: 13px 16px 6px; display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.page-md-cheatsheet .mc-card-head h3 { margin: 0; font-size: var(--fs-md); font-weight: 600; }
.page-md-cheatsheet .mc-badge { font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: var(--r-pill); white-space: nowrap; flex-shrink: 0; }
.page-md-cheatsheet .mc-badge.basic { color: #10b981; background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); }
.page-md-cheatsheet .mc-badge.std { color: #6366f1; background: rgba(99, 102, 241, 0.12); border: 1px solid rgba(99, 102, 241, 0.3); }
.page-md-cheatsheet .mc-badge.ext { color: #f59e0b; background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.3); }
.page-md-cheatsheet .mc-card p { margin: 0; padding: 0 16px 12px; color: var(--c-text-dim); font-size: var(--fs-sm); }

/* 代码区 */
.page-md-cheatsheet .mc-codewrap { position: relative; border-top: 1px solid var(--c-border); }
.page-md-cheatsheet .mc-codewrap pre { margin: 0; padding: 13px 16px; background: var(--c-code-bg); overflow-x: auto; }
.page-md-cheatsheet .mc-codewrap code { font-family: var(--font-mono); font-size: 12.5px; line-height: 1.7; color: var(--c-code-text); white-space: pre; display: block; }
.page-md-cheatsheet .mc-copy {
  position: absolute; top: 8px; right: 8px; padding: 3px 9px; font-size: 11px;
  border: 1px solid var(--c-code-border); border-radius: var(--r-sm);
  background: var(--c-surface); color: var(--c-code-dim); cursor: pointer; opacity: 0; transition: .15s;
}
.page-md-cheatsheet .mc-codewrap:hover .mc-copy { opacity: 1; }
.page-md-cheatsheet .mc-copy:hover { color: var(--c-text); border-color: var(--c-accent); }

/* 渲染预览区 */
.page-md-cheatsheet .mc-preview {
  border-top: 1px solid var(--c-border); background: var(--c-surface-2); padding: 11px 16px 13px;
  font-size: 13px; color: var(--c-text); overflow-x: auto;
}
.page-md-cheatsheet .mc-preview::before { content: '渲染效果'; display: block; font-size: 10px; letter-spacing: .6px; color: var(--c-text-faint); margin-bottom: 8px; }
.page-md-cheatsheet .mc-preview > *:first-child { margin-top: 0; }
.page-md-cheatsheet .mc-preview > *:last-child { margin-bottom: 0; }
.page-md-cheatsheet .mc-preview h1, .page-md-cheatsheet .mc-preview h2, .page-md-cheatsheet .mc-preview h3, .page-md-cheatsheet .mc-preview h4 { margin: .5em 0 .3em; line-height: 1.35; font-weight: 700; color: var(--c-text); }
.page-md-cheatsheet .mc-preview h1 { font-size: 1.5em; }
.page-md-cheatsheet .mc-preview h2 { font-size: 1.28em; }
.page-md-cheatsheet .mc-preview h3 { font-size: 1.14em; }
.page-md-cheatsheet .mc-preview h4 { font-size: 1em; }
.page-md-cheatsheet .mc-preview p { margin: .4em 0; color: var(--c-text-2); }
.page-md-cheatsheet .mc-preview ul, .page-md-cheatsheet .mc-preview ol { margin: .4em 0; padding-left: 1.5em; }
.page-md-cheatsheet .mc-preview li { margin: .15em 0; }
.page-md-cheatsheet .mc-preview blockquote { margin: .5em 0; padding: .15em .9em; border-left: 3px solid var(--c-accent); color: var(--c-text-dim); }
.page-md-cheatsheet .mc-preview a { color: var(--c-accent); text-decoration: underline; }
.page-md-cheatsheet .mc-preview hr { border: 0; border-top: 1px solid var(--c-border); margin: .7em 0; }
.page-md-cheatsheet .mc-preview code { display: inline; white-space: normal; background: var(--c-code-bg); border: 1px solid var(--c-code-border); border-radius: 4px; padding: 1px 5px; font-size: .9em; color: var(--c-code-kw); }
.page-md-cheatsheet .mc-preview pre { background: var(--c-code-bg); border: 1px solid var(--c-code-border); border-radius: 8px; padding: 9px 11px; margin: .5em 0; overflow-x: auto; }
.page-md-cheatsheet .mc-preview pre code { display: block; white-space: pre; background: none; border: none; padding: 0; color: var(--c-code-text); font-size: 12px; }
.page-md-cheatsheet .mc-preview table { border-collapse: collapse; margin: .4em 0; font-size: 12.5px; }
.page-md-cheatsheet .mc-preview th, .page-md-cheatsheet .mc-preview td { border: 1px solid var(--c-border); padding: 3px 10px; }
.page-md-cheatsheet .mc-preview th { background: var(--c-surface-3); font-weight: 600; }
.page-md-cheatsheet .mc-preview kbd { background: var(--c-surface-3); border: 1px solid var(--c-border); border-radius: 4px; padding: 1px 5px; font-size: 11px; color: var(--c-text-dim); }

/* 标签与外链 */
.page-md-cheatsheet .mc-tags { padding: 9px 16px; display: flex; gap: 6px; flex-wrap: wrap; }
.page-md-cheatsheet .mc-tags span { font-size: 11px; color: var(--c-text-dim); background: var(--c-surface-3); padding: 2px 8px; border-radius: var(--r-sm); }
.page-md-cheatsheet .mc-actions,
.page-md-cheatsheet .ext-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; padding: 0 16px 13px; }
.page-md-cheatsheet .mc-actions .ext-label,
.page-md-cheatsheet .ext-actions .ext-label { font-size: 10px; color: var(--c-text-faint); letter-spacing: .5px; margin-right: 2px; }
.page-md-cheatsheet .mc-ext,
.page-md-cheatsheet .ext-btn { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; padding: 4px 10px; border-radius: var(--r-sm); border: 1px solid var(--c-border); color: var(--c-text-dim); text-decoration: none; background: var(--c-surface-2); transition: .15s; }
.page-md-cheatsheet .mc-ext:hover,
.page-md-cheatsheet .ext-btn:hover { color: var(--c-text); text-decoration: none; border-color: var(--c-accent); background: var(--c-accent-soft); }
.page-md-cheatsheet .mc-ext svg,
.page-md-cheatsheet .ext-btn svg { width: 11px; height: 11px; stroke: currentColor; fill: none; stroke-width: 2; }

.page-md-cheatsheet mark { background: rgba(250,204,21,.35); color: var(--c-text); border-radius: 3px; padding: 0 1px; }
html[data-theme="dark"] .page-md-cheatsheet mark { background: rgba(250,204,21,.3); color: #fef3c7; }

.page-md-cheatsheet .mc-empty { grid-column: 1/-1; text-align: center; padding: 60px 20px; color: var(--c-text-dim); background: var(--c-surface-2); border: 1px dashed var(--c-border); border-radius: var(--r-lg); }
.page-md-cheatsheet .mc-empty strong { display: block; font-size: 16px; color: var(--c-text); margin-bottom: 6px; }

@media (max-width: 700px) {
  .page-md-cheatsheet .mc-list { grid-template-columns: 1fr; }
  .page-md-cheatsheet .mc-copy { opacity: 1; }
  .page-md-cheatsheet .mc-meta .quick,
  .page-md-cheatsheet .mc-meta .ext-actions { margin-left: 0; width: 100%; }
}