/* ============================================
   HTML Artifacts 设计系统
   主色: #1677ff | 风格: 简洁专业有质感
   ============================================ */

/* === CSS Variables === */
:root {
  --color-primary: #1677ff;
  --color-primary-light: #4096ff;
  --color-primary-dark: #0958d9;
  --color-primary-bg: #e6f4ff;
  --color-primary-border: #91caff;

  --color-text: #1f1f1f;
  --color-text-secondary: #595959;
  --color-text-tertiary: #8c8c8c;

  --color-bg: #ffffff;
  --color-bg-secondary: #fafafa;
  --color-bg-tertiary: #f5f5f5;

  --color-border: #d9d9d9;
  --color-border-light: #f0f0f0;

  --color-success: #52c41a;
  --color-warning: #faad14;
  --color-error: #ff4d4f;

  --color-code-bg: #1e1e2e;
  --color-code-text: #cdd6f4;

  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-family-code: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;

  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;

  --line-height: 1.8;
  --line-height-tight: 1.4;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  --max-width: 960px;
  --content-padding: 24px;
}

/* === Dark Mode === */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #4096ff;
    --color-primary-light: #69b1ff;
    --color-primary-dark: #1677ff;
    --color-primary-bg: #111a2c;
    --color-primary-border: #15325b;

    --color-text: #e8e8e8;
    --color-text-secondary: #a3a3a3;
    --color-text-tertiary: #737373;

    --color-bg: #141414;
    --color-bg-secondary: #1f1f1f;
    --color-bg-tertiary: #262626;

    --color-border: #434343;
    --color-border-light: #303030;

    --color-code-bg: #0d1117;
    --color-code-text: #e6edf3;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  }
}

/* === Reset & Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

/* === Typography === */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-top: 1.5em;
  margin-bottom: 0.6em;
}

h1 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-2xl);
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--color-border-light);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h1:first-child,
h2:first-child,
h3:first-child,
h4:first-child {
  margin-top: 0;
}

p {
  margin-bottom: 1em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

strong {
  font-weight: 600;
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--content-padding);
}

.artifact-body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px var(--content-padding) 80px;
}

/* === Blockquote === */
blockquote {
  margin: 1.5em 0;
  padding: 12px 20px;
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-primary-bg);
  color: var(--color-text-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* === Mark / Highlight === */
mark {
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}

/* === Code === */
code {
  font-family: var(--font-family-code);
  font-size: 0.875em;
  background-color: var(--color-bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-primary-dark);
}

pre {
  margin: 1.5em 0;
  padding: 20px;
  background-color: var(--color-code-bg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
  color: var(--color-code-text);
  font-size: var(--font-size-sm);
}

/* === Syntax Highlighting (basic) === */
pre .keyword { color: #cba6f7; }
pre .string { color: #a6e3a1; }
pre .number { color: #fab387; }
pre .comment { color: #6c7086; font-style: italic; }
pre .function { color: #89b4fa; }
pre .operator { color: #89dceb; }
pre .type { color: #f9e2af; }

/* === Table === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: var(--font-size-sm);
}

thead {
  background-color: var(--color-primary);
  color: #ffffff;
}

thead th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

tbody td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border-light);
}

tbody tr:nth-child(even) {
  background-color: var(--color-bg-secondary);
}

tbody tr:hover {
  background-color: var(--color-primary-bg);
}

/* === Card === */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.card-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: 8px;
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

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

/* === Tag === */
.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background-color: var(--color-primary-bg);
  border: 1px solid var(--color-primary-border);
  border-radius: 100px;
  white-space: nowrap;
  line-height: 1.8;
}

/* === Button === */
.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: #ffffff;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.2s, box-shadow 0.2s;
  font-family: var(--font-family);
}

.btn-export:hover {
  background-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.btn-export:active {
  background-color: var(--color-primary-dark);
}

/* === Details / Summary === */
details {
  margin: 1em 0;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
}

details[open] {
  box-shadow: var(--shadow-sm);
}

summary {
  padding: 12px 16px;
  font-weight: 500;
  cursor: pointer;
  background-color: var(--color-bg-secondary);
  transition: background-color 0.2s;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "▸ ";
  color: var(--color-primary);
  font-weight: 700;
  transition: transform 0.2s;
  display: inline-block;
}

details[open] summary::before {
  content: "▾ ";
}

summary:hover {
  background-color: var(--color-primary-bg);
}

details > *:not(summary) {
  padding: 0 16px;
}

details > p:last-child,
details > div:last-child {
  padding-bottom: 16px;
}

/* === Lists === */
ul, ol {
  margin: 1em 0;
  padding-left: 2em;
}

li {
  margin-bottom: 0.4em;
}

li::marker {
  color: var(--color-primary);
}

/* === Horizontal Rule === */
hr {
  margin: 2em 0;
  border: none;
  border-top: 1px solid var(--color-border-light);
}

/* === Image === */
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* === Artifact Header === */
.artifact-header {
  margin-bottom: 2em;
  padding-bottom: 1.5em;
  border-bottom: 1px solid var(--color-border-light);
}

.artifact-header h1 {
  margin-bottom: 12px;
}

.artifact-header .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.artifact-header .meta .date::before {
  content: "📅 ";
}

/* === Index Page Specific === */
.index-header {
  text-align: center;
  padding: 60px 0 40px;
}

.index-header h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: 8px;
}

.index-header p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

.search-box {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.search-box input {
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-bg);
}

.search-box input::placeholder {
  color: var(--color-text-tertiary);
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}

.tag-filter .tag {
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.tag-filter .tag:hover,
.tag-filter .tag.active {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.artifacts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.artifacts-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-lg);
}

/* === Footer === */
.footer {
  margin-top: 60px;
  padding: 20px 0;
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border-light);
}

/* === Responsive === */
@media (max-width: 768px) {
  :root {
    --content-padding: 16px;
    --font-size-4xl: 28px;
    --font-size-3xl: 24px;
    --font-size-2xl: 20px;
  }

  .artifact-body {
    padding: 24px var(--content-padding) 60px;
  }

  .index-header {
    padding: 40px 0 24px;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  pre {
    padding: 16px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: var(--font-size-2xl);
  }

  .card {
    padding: 16px;
  }

  .artifact-header .meta {
    flex-direction: column;
    gap: 4px;
  }
}

/* === Utility === */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-tertiary); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.hidden { display: none !important; }