:root {
  --bg: #f6f6ef;
  --surface: #ffffff;
  --border: #e3e3da;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #ff6600;
  --link: #2b59c3;

  --accent-2: #ff9244;
  --page-grad-a: #f2f0e6;
  --page-grad-b: #eceadf;

  --tag-new: #1f8a4c;
  --tag-change: #b8860b;
  --tag-fix: #2b59c3;
  --tag-deprecated: #9c4a4a;
  --tag-issue: #8a5a1f;
  --tag-buff: #0f9b8e;
  --tag-nerf: #c0392b;
  --tag-hotfix: #c2255c;
  --tag-exploit: #7048e8;

  --header-h: 58px;
  --sidebar-w: 260px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #15161a;
  --surface: #1d1f24;
  --border: #2c2f37;
  --ink: #e8e8e8;
  --muted: #9aa0aa;
  --link: #6f9bff;
  --page-grad-a: #15161a;
  --page-grad-b: #101116;
}

* { box-sizing: border-box; }

html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--page-grad-a), var(--page-grad-b)) fixed;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Top bar ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #fff;
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}
.brand {
  color: #fff;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.18);
}
.brand:hover { text-decoration: none; }
.tagline {
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.theme-toggle {
  margin-left: auto;
  color: #fff;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
}
.theme-toggle:hover { background: rgba(255, 255, 255, 0.3); }

/* ---- Layout ---- */
.layout { display: flex; align-items: flex-start; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  background: var(--surface);
}

/* Legend: collapsible key so readers can decode the jargon. */
.legend {
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.legend > summary {
  cursor: pointer;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--accent);
  list-style: none;
}
.legend > summary::-webkit-details-marker { display: none; }
.legend > summary::before { content: "+ "; font-family: var(--mono); }
.legend[open] > summary::before { content: "- "; }
.legend > summary:hover { text-decoration: underline; }
.legend-body { padding: 0 14px 12px; }
.legend-intro { margin: 0 0 8px; color: var(--muted); font-size: 12px; line-height: 1.4; }
.legend-glossary { margin: 0; }
.legend-glossary dt { font-weight: 700; margin-top: 6px; }
.legend-glossary dd { margin: 0 0 0 0; color: var(--muted); font-size: 12px; line-height: 1.35; }
.legend-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 12px; }
.legend-tags .tag { min-width: 0; padding: 1px 5px; font-size: 10px; }

/* Old-school index: a plain list of week links. */
.week-list { padding: 12px 14px; }
.week-year {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin: 14px 0 4px;
}
.week-year:first-child { margin-top: 0; }
.week-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 0;
  color: var(--link);
  line-height: 1.5;
  white-space: nowrap;
}
.week-item:hover { text-decoration: none; }
.week-item:hover .wk-label { text-decoration: underline; }
.week-item.active .wk-label { color: var(--ink); font-weight: 700; }
.week-item.active .wk-label::before { content: "» "; color: var(--accent); }
.week-item .ver { font-family: var(--mono); font-size: 11px; color: var(--muted); }

/* ---- Content ---- */
.content {
  flex: 1 1 auto;
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 30px 60px;
}
.loading { color: var(--muted); }

.release-head { border-bottom: 2px solid var(--border); padding-bottom: 14px; margin-bottom: 8px; }
.release-head h1 { margin: 0 0 4px; font-size: 26px; }
.release-meta { color: var(--muted); font-family: var(--mono); font-size: 13px; }
.release-meta .ver { color: var(--accent); font-weight: 700; }
.release-note { color: var(--muted); font-style: italic; margin: 10px 0 0; font-size: 13px; }
.patch-summary {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  /* Render "->" literally instead of as an arrow ligature. */
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
}
/* String form: a single "// ..." comment line. */
p.patch-summary::before {
  content: "// ";
  color: var(--accent);
  font-weight: 700;
}
/* List form: a TL;DR of dash-prefixed bullets. */
ul.patch-summary { list-style: none; padding: 0; }
ul.patch-summary li { padding-left: 16px; position: relative; }
ul.patch-summary li::before {
  content: "-";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.section { margin-top: 28px; }
.section h2 {
  font-size: 17px;
  margin: 0 0 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.change { display: flex; gap: 10px; padding: 6px 0; align-items: baseline; }
.change-text { flex: 1; }
.change-text .src {
  font-size: 12px;
  font-family: var(--mono);
  margin-left: 6px;
  white-space: nowrap;
}

.tag {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 1px 6px;
  border-radius: 3px;
  color: #fff;
  min-width: 84px;
  text-align: center;
}
.tag-new        { background: var(--tag-new); }
.tag-change     { background: var(--tag-change); }
.tag-fix        { background: var(--tag-fix); }
.tag-deprecated { background: var(--tag-deprecated); }
.tag-issue      { background: var(--tag-issue); }
.tag-buff       { background: var(--tag-buff); }
.tag-nerf       { background: var(--tag-nerf); }
.tag-hotfix     { background: var(--tag-hotfix); }
.tag-exploit    { background: var(--tag-exploit); }

/* ---- Mobile ---- */
@media (max-width: 720px) {
  .tagline { display: none; }
  .layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    flex: none;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .content {
    padding: 18px 16px 40px;
  }
}