/* orange-wks portal — article.css
   Art Bible: art/art-bible.md 準拠 */

:root {
  --bg-color: #fafafa;
  --text-color: #333;
  --user-bg: #fff3ed;
  --user-border: #e8622a;
  --ai-bg: #fff;
  --ai-border: #f4a261;
  --heading-color: #7c3200;
  --code-bg: #f5f5f5;
  --accent: #e8622a;
  --border-color: #ddd;
}

* { box-sizing: border-box; }

body {
  font-family: "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem;
  background: var(--bg-color);
  color: var(--text-color);
}

header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 3px solid var(--heading-color);
}

header h1 {
  color: var(--heading-color);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

header p {
  color: #666;
  font-size: 0.95rem;
}

/* --- chapters --- */

.chapter {
  margin: 3rem 0;
  padding-top: 1rem;
  border-top: 2px solid var(--border-color);
}

.chapter h2 {
  color: var(--heading-color);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chapter h2::before {
  content: "§";
  color: var(--accent);
}

h3 {
  color: #37474f;
  font-size: 1.2rem;
  margin: 2rem 0 1rem;
  padding-left: 0.5rem;
  border-left: 4px solid var(--accent);
}

h4 {
  color: #546e7a;
  font-size: 1.05rem;
  margin: 1.5rem 0 0.8rem;
}

/* --- dialogue --- */

.dialogue { margin: 1.5rem 0; }

.user {
  background: var(--user-bg);
  border-left: 4px solid var(--user-border);
  padding: 1rem 1.5rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
  font-weight: 500;
}

.user::before {
  content: "\1F34A orange";
  display: block;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.3rem;
  font-weight: bold;
}

.ai {
  background: var(--ai-bg);
  border: 1px solid #e0e0e0;
  border-left: 4px solid var(--ai-border);
  padding: 1.5rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.ai::before {
  content: "\1F916 回答";
  display: block;
  font-size: 0.8rem;
  color: var(--ai-border);
  margin-bottom: 0.5rem;
  font-weight: bold;
}

/* --- emphasis / decoration --- */

.highlight {
  background: linear-gradient(transparent 60%, #fff59d 60%);
  font-weight: bold;
}

.keyword {
  color: #c0440a;
  font-weight: bold;
}

.formula {
  background: var(--code-bg);
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 6px;
  font-family: "Consolas", "Monaco", monospace;
  overflow-x: auto;
  text-align: center;
  font-size: 1.1rem;
}

.example {
  background: #fff3e0;
  border: 1px solid #ffcc80;
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 6px;
}

.example-title {
  font-weight: bold;
  color: #c0440a;
  margin-bottom: 0.5rem;
}

/* --- tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid var(--border-color);
  padding: 0.8rem;
  text-align: left;
}

th {
  background: #eceff1;
  font-weight: bold;
}

tr:nth-child(even) {
  background: #fafafa;
}

/* --- lists --- */

ul, ol { padding-left: 1.5rem; }
li { margin: 0.5rem 0; }

/* --- summary box --- */

.summary {
  background: #e8f5e9;
  border: 2px solid #81c784;
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 8px;
}

.summary h4 {
  color: #2e7d32;
  margin-top: 0;
  border: none;
  padding: 0;
}

/* --- compare box --- */

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0;
}

.compare-item {
  padding: 1rem;
  border-radius: 6px;
}

.compare-before {
  background: #ffebee;
  border: 1px solid #ef9a9a;
}

.compare-after {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
}

.compare-label {
  font-weight: bold;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.compare-before .compare-label { color: #c62828; }
.compare-after .compare-label { color: #2e7d32; }

/* --- code --- */

code {
  background: var(--code-bg);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-family: "Consolas", "Monaco", monospace;
  font-size: 0.9em;
}

/* --- footer --- */

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-color);
  text-align: center;
  color: #888;
  font-size: 0.9rem;
}

/* --- intro / toc --- */

.intro {
  background: #fff;
  border: 1px solid #e0e0e0;
  padding: 2rem;
  margin-bottom: 2rem;
  border-radius: 8px;
}

.intro h2 {
  color: var(--heading-color);
  margin-top: 0;
}

.toc {
  background: #f5f5f5;
  padding: 1rem 1.5rem;
  border-radius: 6px;
  margin-top: 1.5rem;
}

.toc h3 {
  margin: 0 0 0.5rem;
  padding: 0;
  border: none;
  font-size: 1rem;
}

.toc ol { margin: 0; padding-left: 1.5rem; }
.toc li { margin: 0.3rem 0; }
.toc a { color: var(--heading-color); text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* --- article-body (import.py appended) --- */

.article-body { max-width: 720px; margin: 0 auto; }
.article-body h2 { color: var(--heading-color); font-size: 1.4rem; margin: 2.5rem 0 1rem;
    padding-bottom: 0.3rem; border-bottom: 2px solid var(--accent); }
.article-body h3 { color: #37474f; font-size: 1.15rem; margin: 2rem 0 0.8rem;
    padding-left: 0.5rem; border-left: 4px solid var(--accent); }
.article-body p { margin: 0.8rem 0; }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin: 0.8rem 0; }
.article-body li { margin: 0.4rem 0; }
.article-body code { background: var(--code-bg); padding: 0.2em 0.4em;
    border-radius: 3px; font-family: monospace; font-size: 0.9em; }
.article-body pre { background: var(--code-bg); padding: 1rem;
    border-radius: 6px; overflow-x: auto; margin: 1rem 0; }
.article-body pre code { padding: 0; background: none; }
.article-body blockquote { border-left: 4px solid var(--border-color); padding: 0.5rem 1rem;
    color: #666; margin: 1rem 0; }
.article-body a { color: var(--accent); }
.article-body img { max-width: 100%; border-radius: 6px; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.article-body th, .article-body td { border: 1px solid var(--border-color); padding: 0.6rem; }
.article-body th { background: #f5f5f5; }
.article-meta { color: #888; font-size: 0.85rem; margin-bottom: 2rem;
    display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
.article-tag { color: var(--accent); font-weight: 600; }
.source-link { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--border-color);
    font-size: 0.85rem; color: #888; }
.source-link a { color: var(--accent); }
.article-cover { width: 100%; border-radius: 8px; margin-bottom: 2rem; aspect-ratio: 16/9; object-fit: cover; }
.nav-links { display: flex; margin: 1.5rem 0; }
.nav-links a { color: var(--accent); text-decoration: none; font-weight: 600; font-size: 0.9rem; }

/* --- share buttons --- */

.share-buttons {
  display: flex;
  gap: 0.6rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  cursor: pointer;
}
.share-btn:hover { border-color: var(--accent); background: var(--accent); color: #fff; }
.share-btn svg { width: 18px; height: 18px; fill: currentColor; }
.share-btn--copied { border-color: var(--accent); }

/* --- bottom nav --- */

.bottom-nav {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}
.bottom-nav a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}
.bottom-nav a:hover { text-decoration: underline; }

/* --- utilities --- */

.mermaid { margin: 1.5rem 0; text-align: center; }
.links { margin-top: 2rem; }
.links li { margin: 0.3rem 0; }
.links a { color: var(--accent); }

/* =============================================
   Dark mode — Art Bible 準拠
   accent: #f4a261 (ライトオレンジ)
   heading: #fdba74
   ============================================= */

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1a1a;
    --text-color: #f1f1f1;
    --text-muted: #a0a0a0;
    --user-bg: #252525;
    --user-border: #e8622a;
    --ai-bg: #1f1f1f;
    --ai-border: #52525b;
    --heading-color: #e8622a;
    --code-bg: #2a2a2a;
    --accent: #54a5a5;
    --border-color: #444444;
  }

  header { border-bottom-color: var(--border-color); }
  header p { color: var(--text-muted); }

  .intro { background: var(--ai-bg); border-color: var(--border-color); }
  .toc { background: var(--code-bg); }
  .toc a { color: var(--heading-color); }

  .chapter { border-top-color: var(--border-color); }

  .user { background: var(--user-bg); border-left-color: var(--user-border); }
  .user::before { color: var(--accent); }

  .ai { background: var(--ai-bg); border-color: var(--border-color); border-left-color: var(--ai-border); }
  .ai::before { color: var(--text-muted); }

  h3 { color: var(--heading-color); border-left-color: var(--accent); }
  h4 { color: var(--text-muted); }

  .article-body h3 { color: var(--heading-color); }
  .article-body blockquote { border-left-color: var(--border-color); color: var(--text-muted); }
  .article-body th { background: var(--code-bg); color: var(--heading-color); }

  .highlight { background: linear-gradient(transparent 60%, rgba(244, 162, 97, 0.25) 60%); }
  .keyword { color: var(--heading-color); }

  th { background: var(--code-bg); color: var(--heading-color); }
  tr:nth-child(even) { background: var(--ai-bg); }

  .summary { background: var(--code-bg); border-color: var(--border-color); }
  .summary h4 { color: var(--heading-color); }

  .example { background: var(--code-bg); border-color: var(--border-color); }
  .example-title { color: var(--text-muted); }

  .compare-before { background: var(--code-bg); border-color: var(--border-color); }
  .compare-before .compare-label { color: var(--text-muted); }
  .compare-after { background: var(--code-bg); border-color: var(--border-color); }
  .compare-after .compare-label { color: var(--text-muted); }

  .formula { background: var(--code-bg); }
  code { background: var(--code-bg); }

  footer { border-top-color: var(--border-color); color: var(--text-muted); }

  .article-meta { color: var(--text-muted); }
  .source-link { border-top-color: var(--border-color); color: var(--text-muted); }

  .share-buttons { border-top-color: var(--border-color); }
  .share-btn { background: var(--ai-bg); border-color: var(--border-color); color: var(--text-color); }
  .share-btn:hover { border-color: var(--accent); background: var(--accent); color: #fff; }
  .bottom-nav { border-top-color: var(--border-color); }
}