/* AI 素养课 Markdown 渲染样式 */
.md-content {
  color: #e2e8f0;
  line-height: 1.8;
  font-size: 16px;
}

.md-content h1, .md-content h2, .md-content h3, .md-content h4 {
  color: #fff;
  font-weight: 800;
  margin: 32px 0 16px;
  line-height: 1.3;
}

.md-content h1 {
  font-size: 36px;
  background: linear-gradient(135deg, #34d399, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border-bottom: 2px solid rgba(52, 211, 153, 0.3);
  padding-bottom: 12px;
}

.md-content h2 {
  font-size: 28px;
  color: #34d399;
  border-bottom: 1px solid rgba(52, 211, 153, 0.2);
  padding-bottom: 8px;
  margin-top: 40px;
}

.md-content h3 {
  font-size: 22px;
  color: #60a5fa;
  margin-top: 28px;
}

.md-content h4 {
  font-size: 18px;
  color: #a78bfa;
}

.md-content p {
  margin: 16px 0;
  line-height: 1.8;
}

.md-content strong {
  color: #fbbf24;
  font-weight: 700;
}

.md-content em {
  color: #a78bfa;
  font-style: italic;
}

.md-content blockquote {
  margin: 24px 0;
  padding: 16px 24px;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.08), rgba(96, 165, 250, 0.08));
  border-left: 4px solid #34d399;
  border-radius: 0 8px 8px 0;
  color: #cbd5e1;
  font-style: italic;
}

.md-content blockquote p:first-child { margin-top: 0; }
.md-content blockquote p:last-child { margin-bottom: 0; }

.md-content code {
  background: rgba(167, 139, 250, 0.15);
  color: #fbbf24;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: 'SF Mono', Monaco, Consolas, monospace;
}

.md-content pre {
  background: #1a202c;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 20px 0;
  overflow-x: auto;
  line-height: 1.6;
}

.md-content pre code {
  background: transparent;
  color: #e2e8f0;
  padding: 0;
  font-size: 14px;
}

.md-content ul, .md-content ol {
  margin: 16px 0;
  padding-left: 28px;
}

.md-content li {
  margin: 8px 0;
  line-height: 1.7;
}

.md-content li::marker {
  color: #34d399;
}

.md-content a {
  color: #60a5fa;
  text-decoration: none;
  border-bottom: 1px solid rgba(96, 165, 250, 0.3);
  transition: all 0.2s;
}

.md-content a:hover {
  color: #34d399;
  border-bottom-color: #34d399;
}

.md-content hr {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin: 32px 0;
}

.md-content table {
  margin: 24px 0;
}

.md-content table th {
  background: rgba(52, 211, 153, 0.1) !important;
  color: #34d399 !important;
}

.md-content table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

/* 文档操作工具栏 */
.md-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: rgba(15, 18, 38, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.md-toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #94a3b8;
  font-size: 13px;
}

.md-toolbar-right {
  display: flex;
  gap: 8px;
}

.md-btn {
  background: rgba(52, 211, 153, 0.15);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: #34d399;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.md-btn:hover {
  background: rgba(52, 211, 153, 0.25);
  border-color: #34d399;
  color: #fff;
}

.md-btn-primary {
  background: linear-gradient(135deg, #10b981, #3b82f6);
  color: #fff;
  border-color: transparent;
}

.md-btn-primary:hover {
  background: linear-gradient(135deg, #059669, #2563eb);
}