/* STATUS-000 — TODO-017 brand color system */
:root {
  --primary: #772432;
  --primary-dark: #4E1721;
  --primary-tint: #F5ECEE;
  --primary-tint-border: #DCC0C6;
  --secondary: #004165;
  --neutral: #A9B2B1;
  --neutral-light: #E4E8E7;
  --neutral-text: #6E7A79;
  --accent: #F2DF74;
  --cream: #FAF6EE;
  --dark: #1A1208;
  --border: #E0D4BB;
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'DM Sans', 'Noto Serif TC', sans-serif;
  background: var(--cream);
  color: var(--dark);
  min-height: 100vh;
}

.site-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
}
.badge {
  background: var(--accent); color: var(--primary);
  font-size: 12px; font-weight: 800; letter-spacing: 2px;
  padding: 4px 14px; border-radius: 20px; flex-shrink: 0;
}
.site-title h1 { font-family: 'Noto Serif TC', serif; font-size: 18px; line-height: 1.3; }
.site-title p { font-size: 11.5px; color: rgba(255,255,255,0.7); margin-top: 2px; }
.version-chip {
  margin-left: auto; flex-shrink: 0;
  background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.3);
  color: #fff; font-size: 12px; font-weight: 600;
  padding: 3px 12px; border-radius: 20px;
}

.tabs {
  display: flex; gap: 6px; padding: 10px 20px;
  background: #fff; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.tabs a {
  text-decoration: none; font-size: 13.5px; font-weight: 600;
  color: var(--neutral-text); padding: 6px 16px; border-radius: 999px;
  border: 1px solid transparent;
}
.tabs a.active { background: var(--primary); color: #fff; }
.tabs a:not(.active):hover { background: var(--primary-tint); color: var(--primary); }

.content { max-width: 860px; margin: 0 auto; padding: 22px 18px 40px; }
.loading { color: var(--neutral-text); text-align: center; padding: 40px 0; }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(26,18,8,0.08);
  padding: 22px 26px; line-height: 1.8; font-size: 14.5px;
  overflow-wrap: break-word;
}
.card + .card { margin-top: 16px; }

.card h1 { font-family: 'Noto Serif TC', serif; font-size: 21px; color: var(--primary); margin: 0 0 12px; line-height: 1.4; }
.card h2 { font-family: 'Noto Serif TC', serif; font-size: 17px; color: var(--primary); margin: 22px 0 8px; }
.card h3 { font-size: 15px; color: var(--primary); margin: 16px 0 6px; }
.card ul, .card ol { padding-left: 24px; margin: 6px 0; }
.card li { margin: 3px 0; }
.card p { margin: 8px 0; }
.card a { color: var(--secondary); }
.card code {
  background: var(--primary-tint); border-radius: 5px;
  padding: 1px 6px; font-size: 12.5px;
}
.card pre {
  background: #FBF8F2; border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; overflow-x: auto; font-size: 12.5px; line-height: 1.6; margin: 10px 0;
}
.card pre code { background: none; padding: 0; }
.card blockquote {
  border-left: 4px solid var(--accent); background: #FDFBF3;
  padding: 10px 16px; margin: 10px 0; border-radius: 0 8px 8px 0;
}
.table-scroll { overflow-x: auto; margin: 10px 0; }
.card table { border-collapse: collapse; width: 100%; font-size: 13px; }
.card th, .card td { border: 1px solid var(--border); padding: 7px 10px; text-align: left; vertical-align: top; }
.card th { background: var(--primary-tint); color: var(--primary); white-space: nowrap; }
.card hr { border: none; border-top: 1px solid var(--neutral-light); margin: 18px 0; }

.doc-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.doc-list a {
  display: block; text-decoration: none;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; color: var(--dark); font-size: 13.5px; font-weight: 600;
  transition: border-color .15s, transform .15s;
}
.doc-list a:hover { border-color: var(--primary-tint-border); transform: translateY(-2px); }
.doc-list .doc-num { color: var(--primary); font-weight: 800; margin-right: 6px; }

.back-link {
  display: inline-block; margin-bottom: 14px; font-size: 13px;
  color: var(--secondary); text-decoration: none;
}
.back-link:hover { text-decoration: underline; }

.section-note { font-size: 12.5px; color: var(--neutral-text); margin: 4px 0 14px; }

.site-footer {
  max-width: 860px; margin: 0 auto; padding: 18px 18px 30px;
  display: flex; flex-direction: column; gap: 4px;
  font-size: 11.5px; color: var(--neutral-text); text-align: center;
  border-top: 1px solid var(--neutral-light);
}
.site-footer a { color: var(--secondary); }

@media (max-width: 520px) {
  .site-title h1 { font-size: 15px; }
  .version-chip { display: none; }
  .card { padding: 16px 16px; }
}