/*
PaperScope Theme
Inspired by VSCode Light Modern / Dark Modern
*/

/* ==================== CSS Variables ==================== */
:root {
  /* Light Modern */
  --bg: #ffffff;
  --bg-card: #f8f8f8;
  --text: #3b3b3b;
  --text-muted: #616161;
  --border: #e5e5e5;
  --primary: #005fb8;
  --primary-light: #0258a8;
  --primary-dim: #bed6ed;
  --accent: #fd716c;
  --accent-light: #c72e0f;
  --accent-dim: #f8f8f8;

  --code-bg: #f8f8f8;
  --code-text: #3b3b3b;

  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.10);
  --shadow-code: 0 4px 20px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-sm: 6px;
  --font: 'Inter', -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', monospace;
  --transition: 0.25s ease;
  --max-width: 820px;
  --header-height: 64px;

  --dot-red: #ff5f56;
  --dot-yellow: #ffbd2e;
  --dot-green: #27c93f;
}

/* ==================== 暗色模式 ==================== */
[data-theme="dark"] {
  /* Dark Modern */
  --bg: #1f1f1f;
  --bg-card: #181818;
  --text: #cccccc;
  --text-muted: #868686;
  --border: #2b2b2b;
  --primary: #0078d4;
  --primary-light: #026ec1;
  --primary-dim: #2489db82;
  --accent: #f85149;
  --accent-light: #f85149;
  --accent-dim: #2b2b2b;

  --code-bg: #2b2b2b;
  --code-text: #cccccc;

  --shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.50);
  --shadow-code: 0 4px 20px rgba(0, 0, 0, 0.40);
}

/* ==================== 基础重置 ==================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  padding: 0 20px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 16px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  transition: border-color var(--transition);
}

.site-brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.site-brand .accent {
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.site-nav a:hover {
  color: var(--primary);
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--primary);
  color: var(--primary);
}

.theme-toggle i {
  display: flex;
  align-items: center;
  justify-content: center;
}

.content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 16px 60px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text);
  line-height: 1.3;
  margin-top: 2em;
  margin-bottom: 0.5em;
  font-weight: 650;
  letter-spacing: -0.01em;
}

h1 {
  font-size: 2.6rem;
  margin-top: 0.2em;
  margin-bottom: 0.4em;
}

h2 {
  font-size: 1.8rem;
  padding-bottom: 0.2em;
  border-bottom: 2px solid var(--border);
}

h3 {
  font-size: 1.35rem;
}

h4 {
  font-size: 1.1rem;
}

p {
  margin-bottom: 1.2em;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-card);
  padding: 16px 24px;
  margin: 1.5em 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  box-shadow: var(--shadow);
  color: var(--text-muted);
  font-style: italic;
}

ul,
ol {
  padding-left: 1.6em;
  margin-bottom: 1.2em;
}

li {
  margin-bottom: 0.3em;
}

code:not(pre code) {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.15em 0.5em;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

[data-theme="dark"] code:not(pre code) {
  background: #3a3a4a;
}

.code-block-wrapper {
  position: relative;
  margin: 1.5em 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow-code);
  transition: box-shadow var(--transition);
  background: var(--code-bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.code-block-wrapper:hover {
  box-shadow: var(--shadow-hover);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px 10px 16px;
  background: var(--code-bg);
  user-select: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-dots {
  display: flex;
  gap: 8px;
  align-items: center;
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  transition: opacity 0.2s;
}

.code-dot-red {
  background: var(--dot-red);
}
.code-dot-yellow {
  background: var(--dot-yellow);
}
.code-dot-green {
  background: var(--dot-green);
}

.code-dots:hover .code-dot {
  opacity: 0.85;
}

.code-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.code-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.7;
  font-family: var(--mono);
  padding-left: 10px;
  margin-right: auto;
}

.code-lang {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.6;
  font-family: var(--font);
}

.code-copy-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  opacity: 0.4;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-family: var(--font);
}

.code-copy-btn:hover {
  opacity: 1;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.10);
}

.code-copy-btn.copied {
  opacity: 1;
  color: var(--dot-green);
}

.code-block-wrapper pre {
  background: transparent !important;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 0;
  box-shadow: none;
  border: none;
  background: var(--code-bg) !important;
}

.code-block-wrapper pre code {
  background: transparent !important;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  font-family: var(--mono);
  color: var(--code-text);
}

/* ============================================================
   highlight.js 亮色/暗色自适应 (VSCode Modern 配色)
   ============================================================ */

/* ----- 亮色模式 (Light Modern) ----- */
[data-theme="light"] .code-block-wrapper pre code.hljs {
  color: #3b3b3b;
}

[data-theme="light"] .hljs-keyword,
[data-theme="light"] .hljs-selector-tag,
[data-theme="light"] .hljs-literal,
[data-theme="light"] .hljs-section,
[data-theme="light"] .hljs-link {
  color: #af00db;
}

[data-theme="light"] .hljs-string,
[data-theme="light"] .hljs-title,
[data-theme="light"] .hljs-name,
[data-theme="light"] .hljs-type,
[data-theme="light"] .hljs-attribute,
[data-theme="light"] .hljs-symbol,
[data-theme="light"] .hljs-bullet,
[data-theme="light"] .hljs-addition,
[data-theme="light"] .hljs-variable,
[data-theme="light"] .hljs-template-tag,
[data-theme="light"] .hljs-template-variable {
  color: #a31515;
}

[data-theme="light"] .hljs-comment,
[data-theme="light"] .hljs-quote,
[data-theme="light"] .hljs-deletion,
[data-theme="light"] .hljs-meta {
  color: #008000;
}

[data-theme="light"] .hljs-number,
[data-theme="light"] .hljs-built_in,
[data-theme="light"] .hljs-builtin-name,
[data-theme="light"] .hljs-params {
  color: #098658;
}

[data-theme="light"] .hljs-function .hljs-title,
[data-theme="light"] .hljs-class .hljs-title {
  color: #795e26;
}

[data-theme="light"] .hljs-operator,
[data-theme="light"] .hljs-punctuation {
  color: #3b3b3b;
}

/* ----- 暗色模式 (Dark Modern) ----- */
[data-theme="dark"] .code-block-wrapper pre code.hljs {
  color: #cccccc;
}

[data-theme="dark"] .hljs-keyword,
[data-theme="dark"] .hljs-selector-tag,
[data-theme="dark"] .hljs-literal,
[data-theme="dark"] .hljs-section,
[data-theme="dark"] .hljs-link {
  color: #c586c0;
}

[data-theme="dark"] .hljs-string,
[data-theme="dark"] .hljs-title,
[data-theme="dark"] .hljs-name,
[data-theme="dark"] .hljs-type,
[data-theme="dark"] .hljs-attribute,
[data-theme="dark"] .hljs-symbol,
[data-theme="dark"] .hljs-bullet,
[data-theme="dark"] .hljs-addition,
[data-theme="dark"] .hljs-variable,
[data-theme="dark"] .hljs-template-tag,
[data-theme="dark"] .hljs-template-variable {
  color: #ce9178;
}

[data-theme="dark"] .hljs-comment,
[data-theme="dark"] .hljs-quote,
[data-theme="dark"] .hljs-deletion,
[data-theme="dark"] .hljs-meta {
  color: #6a9955;
}

[data-theme="dark"] .hljs-number,
[data-theme="dark"] .hljs-built_in,
[data-theme="dark"] .hljs-builtin-name,
[data-theme="dark"] .hljs-params {
  color: #b5cea8;
}

[data-theme="dark"] .hljs-function .hljs-title,
[data-theme="dark"] .hljs-class .hljs-title {
  color: #dcdcaa;
}

[data-theme="dark"] .hljs-operator,
[data-theme="dark"] .hljs-punctuation {
  color: #cccccc;
}

/* ============================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.95rem;
}

th,
td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

th {
  background: var(--bg-card);
  font-weight: 600;
}

tr:nth-child(even) {
  background: var(--bg-card);
}

hr {
  border: none;
  border-top: 2px solid var(--border);
  margin: 2.5em 0;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all var(--transition);
  margin: 1.2em 0;
}

.card:hover {
  box-shadow: var(--shadow-hover);
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 95, 184, 0.25);
  text-decoration: none;
  color: #fff;
}

.btn-accent {
  background: var(--accent);
}

.btn-accent:hover {
  background: var(--accent-light);
  box-shadow: 0 4px 14px rgba(253, 113, 108, 0.25);
}

.tag {
  display: inline-block;
  background: var(--primary-dim);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 12px;
  border-radius: 20px;
  letter-spacing: 0.02em;
  transition: background var(--transition), color var(--transition);
}

.tag-accent {
  background: var(--accent-dim);
  color: var(--accent);
}

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 16px 40px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 640px) {
  .site-header {
    flex-wrap: wrap;
    gap: 10px;
  }

  .site-nav {
    gap: 14px;
    font-size: 0.85rem;
  }

  h1 {
    font-size: 2.0rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .content {
    padding: 24px 12px 40px;
  }

  .code-block-wrapper pre {
    padding: 14px 16px;
    font-size: 0.8rem;
  }

  .card {
    padding: 18px 16px;
  }

  .site-footer {
    flex-direction: column;
    text-align: center;
  }

  .code-header {
    flex-wrap: wrap;
    gap: 6px;
  }
}

/* ==================== 打印样式 ==================== */
@media print {
  .theme-toggle,
  .code-copy-btn,
  .code-dots {
    display: none;
  }
  .site-nav {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
    padding: 0;
  }
  .card,
  .code-block-wrapper {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  .site-header {
    border-bottom-color: #ccc;
  }
}