:root {
  --bg: #fbfbf9; --panel: #f2f1ec; --text: #1d1f23; --muted: #62666e;
  --border: #dcdad2; --accent: #c8102e; --link: #1557b0; --code-bg: #ecebe5;
  --row-alt: #f5f4ef; --hl: #fff2a8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b; --panel: #1c1f24; --text: #e4e5e8; --muted: #9a9ea8;
    --border: #2e323a; --accent: #ff5a6e; --link: #7cb4ff; --code-bg: #262a31;
    --row-alt: #1a1d22; --hl: #5a4c00;
  }
}
* { box-sizing: border-box; }
html { scroll-padding-top: 64px; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 16px;
  height: 52px; padding: 0 16px; background: var(--panel); border-bottom: 3px solid var(--accent); }
.brand { font-weight: 700; color: var(--text); font-size: 17px; letter-spacing: .2px; }
.brand:hover { text-decoration: none; color: var(--accent); }
#filter { margin-left: auto; width: min(280px, 45vw); padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); font: inherit; font-size: 14px; }
.kofi { margin-left: auto; padding: 5px 12px; border-radius: 6px; background: var(--accent); color: var(--panel);
  font-size: 14px; font-weight: 600; white-space: nowrap; }
.kofi:hover { text-decoration: none; filter: brightness(1.1); }
#filter + .kofi { margin-left: 0; }
.menu-btn { display: none; background: none; border: 0; color: var(--text); font-size: 22px; cursor: pointer; }

.layout { display: grid; grid-template-columns: 240px minmax(0, 1fr) 220px; }
.sidebar, .toc { position: sticky; top: 52px; height: calc(100vh - 52px); overflow-y: auto;
  padding: 20px 16px; font-size: 14px; }
.sidebar { border-right: 1px solid var(--border); }
.toc { border-left: 1px solid var(--border); }
.sidebar ul, .toc ul { list-style: none; margin: 0 0 18px; padding: 0; }
.sidebar li a, .toc li a, .nav-home { display: block; padding: 4px 8px; border-radius: 5px; color: var(--text); }
.toc li a { color: var(--muted); font-size: 13px; }
.sidebar a:hover, .toc a:hover { background: var(--code-bg); text-decoration: none; }
.sidebar a.active, .nav-home.active { background: var(--accent); color: var(--panel); }
.nav-home { font-weight: 600; margin-bottom: 14px; }
.nav-heading { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted);
  font-weight: 700; margin: 0 8px 6px; }

main { min-width: 0; padding: 28px 40px 80px; }
.content { max-width: 1000px; margin: 0 auto; }
h1, h2, h3, h4 { line-height: 1.25; position: relative; }
h1 { font-size: 2.1em; margin-top: 0; border-bottom: 3px solid var(--accent); padding-bottom: 8px; }
h2 { font-size: 1.5em; margin-top: 2em; border-bottom: 1px solid var(--border); padding-bottom: 4px; }
h3 { font-size: 1.2em; margin-top: 1.6em; }
.anchor { margin-left: 8px; color: var(--muted); opacity: 0; font-weight: 400; }
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor, h4:hover .anchor { opacity: 1; }
h2:target, h3:target, h4:target { background: var(--hl); }
blockquote { margin: 1em 0; padding: 8px 16px; border-left: 4px solid var(--accent);
  background: var(--panel); color: var(--muted); border-radius: 0 6px 6px 0; }
blockquote p { margin: .4em 0; }
code { font: 0.88em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--code-bg); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
pre { background: var(--code-bg); padding: 12px 16px; border-radius: 6px; overflow-x: auto; }
pre code { padding: 0; background: none; overflow-wrap: normal; }
.table-wrap { overflow-x: auto; margin: 1em 0; border: 1px solid var(--border); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { padding: 6px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: var(--panel); position: sticky; top: 0; }
tbody tr:nth-child(even) { background: var(--row-alt); }
tbody tr:last-child td { border-bottom: 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }
.hidden-by-filter { display: none; }

@media (max-width: 1200px) {
  .layout { grid-template-columns: 240px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 800px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .menu-btn { display: block; }
  .sidebar { display: none; position: fixed; top: 52px; left: 0; width: 280px; z-index: 9;
    background: var(--panel); box-shadow: 4px 0 16px rgba(0,0,0,.2); }
  body.nav-open .sidebar { display: block; }
  main { padding: 20px 16px 60px; }
  h1 { font-size: 1.7em; }
}

/* all-games index */
.game-list { list-style: none; padding: 0; display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.game-list li { border: 1px solid var(--border); border-radius: 8px; padding: 16px 18px; background: var(--panel); }
.game-list a.game-title { font-size: 1.2em; font-weight: 700; }
.game-list p { margin: .5em 0 0; color: var(--muted); }
.layout.single { grid-template-columns: minmax(0, 1fr); }

.all-games { color: var(--muted); font-size: 14px; }
@media (max-width: 600px) { .kofi span { display: none; } }