/* ============================================================
   TranslateLM — Scholar's Archive
   Palette: warm cream · ink · wine
   Typography: Cormorant Garamond + Plus Jakarta Sans
   ============================================================ */

:root {
  --bg:           oklch(98%   0.010 85);
  --bg-subtle:    oklch(95.5% 0.012 85);
  --bg-inset:     oklch(92%   0.015 85);
  --border:       oklch(86%   0.016 85);
  --border-soft:  oklch(91.5% 0.012 85);

  --text:         oklch(14%   0.010 50);
  --text-muted:   oklch(43%   0.014 50);
  --text-ghost:   oklch(62%   0.010 50);

  --accent:       oklch(30%   0.095 60);
  --accent-hover: oklch(22%   0.090 60);
  --accent-pale:  #F3F0E7;
  --accent-mid:   oklch(90%   0.030 65);

  --font-serif:   'EB Garamond', Georgia, 'Noto Serif SC', 'Source Han Serif CN', serif;
  --font-sans:    'Plus Jakarta Sans', -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body:    'Plus Jakarta Sans', -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono:    'JetBrains Mono', 'Cascadia Code', monospace;

  --max-w:   860px;
  --prose-w: 690px;
  --r:       4px;
  --r-sm:    2px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.14s ease;
}
a:hover { color: var(--accent-hover); }

/* ============================================================
   Header
   ============================================================ */
.site-header {
  background: var(--bg);
  border-top: 3px solid var(--accent);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
  height: 54px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-logo {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  transition: opacity 0.14s;
}
.site-logo:hover { color: var(--text); opacity: 0.65; }
.site-logo span  { color: var(--accent); font-weight: 700; }

.nav-desc {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.3px;
  color: var(--text-ghost);
  margin-top: 8px;
}

/* ============================================================
   Container
   ============================================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============================================================
   Article list
   ============================================================ */
.article-list {
  padding: 0 0 80px;
}

.article-list-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 48px 0 14px;
  border-bottom: 1.5px solid var(--text);
  margin-bottom: 0;
}

.list-label {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.4px;
  color: var(--text-muted);
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-ghost);
  font-variant-numeric: tabular-nums;
}

/* Article row */
.article-card {
  padding: 22px 0;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.12s ease;
}
.article-card:hover {
  background: var(--accent-pale);
}

.article-card:hover {
  background: var(--accent-pale);
}

/* Index number */
.article-index {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--border);
  font-variant-numeric: tabular-nums;
  user-select: none;
  text-align: right;
  align-self: start;
  padding-top: 5px;
  transition: color 0.12s;
}
.article-card:hover .article-index {
  color: var(--accent-mid);
}

.article-card-left { min-width: 0; }

.article-card-date { display: none; }

.article-card-title {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.1px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.14s ease;
}
.article-card:hover .article-card-title { color: var(--accent); }

.article-card-meta {
  margin-top: 5px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.article-date {
  font-family: var(--font-sans);
  font-size: 11.5px;
  color: var(--text-ghost);
  font-variant-numeric: tabular-nums;
}

.article-source {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: var(--accent);
  background: var(--accent-pale);
  border-radius: 2px;
  padding: 1px 6px;
}

/* Original link */
.btn-original {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 400;
  color: var(--text-ghost);
  border-radius: var(--r-sm);
  padding: 2px 6px;
  white-space: nowrap;
  transition: color 0.14s, background 0.14s;
}
.btn-original:hover {
  color: var(--accent);
  background: var(--accent-pale);
}
.btn-original svg { width: 10px; height: 10px; opacity: 0.5; }
.btn-original:hover svg { opacity: 1; }
.btn-original-disabled { opacity: 0.25; pointer-events: none; }
.btn-original-disabled svg { opacity: 0.3; }

/* ============================================================
   Detail page
   ============================================================ */
.detail-back {
  padding: 24px 0 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-ghost);
  transition: color 0.14s;
}
.back-link:hover { color: var(--accent); }
.back-link svg { width: 14px; height: 14px; }

.detail-header {
  padding: 28px 0 24px;
  border-bottom: 1px solid var(--border-soft);
}

.detail-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.8vw, 34px);
  font-weight: 600;
  letter-spacing: 0px;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 12px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.original-title-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 400;
  font-style: italic;
  color: var(--text-ghost);
  transition: color 0.14s;
}
.original-title-link:hover { color: var(--accent); }
.original-title-link svg { width: 11px; height: 11px; opacity: 0.5; }
.original-title-link:hover svg { opacity: 1; }

.detail-date {
  font-family: var(--font-sans);
  font-size: 11.5px;
  color: var(--text-ghost);
  font-variant-numeric: tabular-nums;
}

.detail-meta-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

.detail-source {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.8px;
  color: var(--accent);
  background: var(--accent-pale);
  border-radius: 2px;
  padding: 2px 7px;
}

.btn-original-lg {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  padding: 4px 10px;
  white-space: nowrap;
  transition: color 0.14s, background 0.14s;
}
.btn-original-lg:hover {
  color: var(--accent);
  background: var(--accent-pale);
}
.btn-original-lg svg { width: 11px; height: 11px; opacity: 0.5; }
.btn-original-lg:hover svg { opacity: 1; }
.btn-original-lg.btn-original-disabled {
  opacity: 0.25;
  pointer-events: none;
}

/* ============================================================
   Prose
   ============================================================ */
.prose {
  padding: 32px 0 100px;
  max-width: var(--prose-w);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.8;
}

.prose > *:first-child { margin-top: 0; }

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  font-family: var(--font-sans);
  color: var(--text);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2.2em;
  margin-bottom: 0.7em;
}

.prose h1 { font-size: 22px; }
.prose h2 {
  font-size: 17px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-soft);
}
.prose h3 { font-size: 15.5px; font-weight: 700; }
.prose h4 { font-size: 14.5px; }

.prose p { margin-bottom: 1.5em; }

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent-mid);
}
.prose a:hover {
  color: var(--accent-hover);
  text-decoration-color: var(--accent-hover);
}

.prose ul, .prose ol {
  padding-left: 1.6em;
  margin-bottom: 1.5em;
}
.prose li { margin-bottom: 0.45em; line-height: 1.75; }
.prose li::marker { color: var(--accent); }

.prose blockquote {
  border-left: 3px solid var(--accent);
  background: var(--bg-subtle);
  padding: 14px 22px;
  margin: 2em 0;
  color: var(--text-muted);
  font-style: italic;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}
.prose blockquote p { margin-bottom: 0; font-size: 17.5px; }

.prose code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 2px 5px;
  color: var(--accent);
}

.prose pre {
  background: oklch(14% 0.012 50);
  border-radius: var(--r);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 2em 0;
}
.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
  color: oklch(88% 0.012 85);
}

.prose img {
  max-width: 100%;
  border-radius: var(--r);
  border: 1px solid var(--border);
  margin: 2em 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 2.5em 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 14.5px;
  font-family: var(--font-sans);
}
.prose th {
  background: var(--bg-subtle);
  color: var(--text);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--border);
}
.prose td {
  padding: 10px 14px;
  border: 1px solid var(--border-soft);
}
.prose tr:nth-child(even) td { background: var(--bg-subtle); }
.prose strong { font-weight: 700; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 20px 0;
}
.site-footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-text {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--text-ghost);
}

/* ============================================================
   Empty state
   ============================================================ */
.empty-state { padding: 64px 0; }
.empty-state-icon { font-size: 28px; margin-bottom: 14px; opacity: 0.15; }
.empty-title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-style: italic;
  color: var(--text);
  margin-bottom: 8px;
}
.empty-desc { font-size: 13px; color: var(--text-muted); font-family: var(--font-sans); }
.empty-desc code {
  font-family: var(--font-mono);
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1px 5px;
  font-size: 12px;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .site-header-inner { padding: 0 16px; }
  .site-footer-inner { padding: 0 16px; flex-direction: column; gap: 6px; }
  .article-card-meta { gap: 6px; }
  .detail-title { font-size: 22px; }
}