/* 基础样式 */
* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

[v-cloak] {
  display: none;
}

/* 主题变量 */
:root {
  --sidebar-width: 18rem;

  /* 浅色主题（默认） */
  --bg-body: #f8fafc;
  --bg-header: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-theory: #f8fafc;
  --bg-editor: #0f172a;
  --bg-output: #f1f5f9;
  --bg-output-header: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --accent: #ea580c;
  --accent-hover: #c2410c;
  --accent-active: #9a3412;

  /* 理论区 Markdown */
  --theory-text: #334155;
  --theory-heading: #0f172a;
  --theory-h1-border: #cbd5e1;
  --theory-code-bg: #e2e8f0;
  --theory-code-text: #92400e;
  --theory-pre-bg: #0f172a;
  --theory-pre-border: #334155;
  --theory-pre-text: #e2e8f0;
  --theory-link: #2563eb;
  --theory-strong: #0f172a;
  --hint-bg: #dbeafe;
  --hint-border: #93c5fd;
  --hint-text: #1e3a8a;

  /* 按钮 */
  --chapter-btn-text: #475569;
  --chapter-btn-hover-bg: #f1f5f9;
  --chapter-btn-active-bg: #e2e8f0;
  --chapter-btn-active-text: #0f172a;
  --chapter-num-bg: #e2e8f0;
  --chapter-num-text: #64748b;

  /* 输出面板 */
  --output-empty: #94a3b8;
  --output-success: #15803d;
  --output-error: #dc2626;

  /* 滚动条 */
  --scrollbar-track: #e2e8f0;
  --scrollbar-thumb: #94a3b8;
  --scrollbar-thumb-hover: #64748b;
}

[data-theme="dark"] {
  --bg-body: #111827;
  --bg-header: #1f2937;
  --bg-sidebar: #1f2937;
  --bg-theory: #111827;
  --bg-editor: #111827;
  --bg-output: #020617;
  --bg-output-header: #1f2937;
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --border-color: #374151;
  --accent: #ea580c;
  --accent-hover: #f97316;
  --accent-active: #c2410c;

  --theory-text: #d1d5db;
  --theory-heading: #f9fafb;
  --theory-h1-border: #374151;
  --theory-code-bg: #374151;
  --theory-code-text: #fbbf24;
  --theory-pre-bg: #111827;
  --theory-pre-border: #374151;
  --theory-pre-text: #e5e7eb;
  --theory-link: #60a5fa;
  --theory-strong: #f9fafb;
  --hint-bg: rgba(30, 64, 175, 0.3);
  --hint-border: rgba(29, 78, 216, 0.5);
  --hint-text: #dbeafe;

  --chapter-btn-text: #d1d5db;
  --chapter-btn-hover-bg: #374151;
  --chapter-btn-active-bg: #374151;
  --chapter-btn-active-text: #ffffff;
  --chapter-num-bg: #374151;
  --chapter-num-text: #9ca3af;

  --output-empty: #9ca3af;
  --output-success: #4ade80;
  --output-error: #f87171;

  --scrollbar-track: #1f2937;
  --scrollbar-thumb: #4b5563;
  --scrollbar-thumb-hover: #6b7280;
}

/* 应用主题变量 */
body {
  background: var(--bg-body);
  color: var(--text-primary);
}

header {
  background: var(--bg-header);
  border-color: var(--border-color) !important;
}

#sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-color: var(--border-color) !important;
}

#theory {
  background: var(--bg-theory);
  border-color: var(--border-color) !important;
}

#editor {
  background: var(--bg-editor);
}

#editor .cm-editor,
#editor .cm-scroller,
#editor .cm-gutters {
  background: var(--bg-editor) !important;
}

[data-theme="light"] #editor .cm-editor,
[data-theme="light"] #editor .cm-scroller,
[data-theme="light"] #editor .cm-gutters,
[data-theme="light"] #editor .cm-content {
  background: #ffffff !important;
}

section:has(> #editor) {
  background: var(--bg-editor);
}

[data-theme="light"] section:has(> #editor) {
  background: #ffffff;
}

[data-theme="light"] section:has(> #editor) > div:first-child,
[data-theme="light"] section:has(> #editor) > div:last-child {
  background: #f8fafc;
}

[data-theme="light"] section:has(> #editor) > div:last-child #output {
  background: #f8fafc;
}

section:has(> #editor) > div:first-child,
section:has(> #editor) > div:last-child {
  background: var(--bg-output-header);
  border-color: var(--border-color) !important;
}

#output {
  background: var(--bg-output);
  color: var(--text-secondary);
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* 主题切换按钮 */
#theme-toggle {
  background: var(--bg-theory);
  border-color: var(--border-color) !important;
  color: var(--text-primary);
}

#theme-toggle:hover {
  background: var(--chapter-btn-hover-bg);
}

#menu-toggle {
  color: var(--text-secondary);
}

#menu-toggle:hover {
  background: var(--chapter-btn-hover-bg);
  color: var(--text-primary);
}

/* 理论区域 Markdown 样式 */
#theory-content {
  color: var(--theory-text);
  line-height: 1.75;
}

#theory-content h1 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--theory-heading);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--theory-h1-border);
}

#theory-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--theory-heading);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

#theory-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--theory-heading);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

#theory-content p {
  margin-bottom: 1rem;
}

#theory-content ul,
#theory-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

#theory-content li {
  margin-bottom: 0.35rem;
}

#theory-content code {
  background: var(--theory-code-bg);
  color: var(--theory-code-text);
  padding: 0.15rem 0.35rem;
  border-radius: 0.25rem;
  font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
  font-size: 0.9em;
}

#theory-content pre {
  background: var(--theory-pre-bg);
  border: 1px solid var(--theory-pre-border);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}

#theory-content pre code {
  background: transparent;
  color: var(--theory-pre-text);
  padding: 0;
  font-size: 0.875rem;
}

#theory-content strong {
  color: var(--theory-strong);
}

#theory-content a {
  color: var(--theory-link);
  text-decoration: none;
}

#theory-content a:hover {
  text-decoration: underline;
}

/* 提示框 */
#chapter-hint {
  background: var(--hint-bg);
  border-color: var(--hint-border) !important;
  color: var(--hint-text);
}

/* 输出面板 */
#output {
  white-space: pre-wrap;
  word-break: break-word;
}

#output:empty::before {
  content: "点击「运行」按钮查看输出结果";
  color: var(--output-empty);
}

/* CodeMirror 主题微调 */
.cm-editor {
  height: 100%;
}

.cm-focused {
  outline: none;
}

:root {
  --sidebar-width: 18rem;
}

/* 模块标题 sticky */
#chapter-list > div > h3 {
  position: sticky;
  top: 0;
  background: var(--bg-sidebar);
  z-index: 1;
  border-radius: 0.375rem;
}

/* 章节按钮 */
.chapter-btn {
  color: var(--chapter-btn-text);
}

.chapter-btn:hover {
  background: var(--chapter-btn-hover-bg);
  color: var(--text-primary);
}

.chapter-btn.active {
  background: var(--chapter-btn-active-bg);
  color: var(--chapter-btn-active-text);
}

.chapter-btn span:first-child {
  background: var(--chapter-num-bg) !important;
  color: var(--chapter-num-text) !important;
}

.chapter-btn.active span:first-child {
  background: var(--accent) !important;
  color: #fff !important;
}

/* 运行按钮 */
#run-btn {
  background: var(--accent);
}

#run-btn:hover {
  background: var(--accent-hover);
}

#run-btn:active {
  background: var(--accent-active);
}

/* 清空按钮 */
#clear-output {
  color: var(--text-muted);
}

#clear-output:hover {
  color: var(--text-primary);
}

/* 实践代码区标题 */
section:has(> #editor) > div:first-child {
  color: var(--text-secondary);
}

/* 输出面板标题 */
section:has(> #editor) > div:last-child > div:first-child {
  color: var(--text-muted);
  background: var(--bg-output-header);
}

/* 移动端适配 */
@media (max-width: 768px) {
  #theory {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
}

/* 动画 */
@keyframes pulse-orange {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.running #run-btn {
  animation: pulse-orange 1.5s infinite;
}

/* 输出颜色 */
.text-green-400 {
  color: var(--output-success) !important;
}

.text-red-400 {
  color: var(--output-error) !important;
}

.text-gray-200,
.text-gray-400 {
  color: var(--text-secondary) !important;
}