:root {
  --bg:#1d2021; --panel:#282828; --panel2:#232627; --code:#161819;
  --line:#3c3836; --ink:#ebdbb2; --muted:#a89984; --faint:#928374;
  --green:#b8bb26; --olive:#98971a; --yellow:#fabd2f; --orange:#fe8019;
  --purple:#d3869b; --aqua:#8ec07c; --blue:#83a598; --red:#fb4934;
}
* { box-sizing: border-box; }
@font-face { font-family:'JetBrains Mono'; src:url('./vendor/fonts/jetbrains-mono-400.woff2') format('woff2'); font-weight:400; font-display:swap; }
@font-face { font-family:'JetBrains Mono'; src:url('./vendor/fonts/jetbrains-mono-700.woff2') format('woff2'); font-weight:700; font-display:swap; }
body { margin:0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background:var(--bg); color:var(--ink); }
header.top { background:var(--panel); border-bottom:1px solid var(--line); padding:10px 20px; display:flex; align-items:center; gap:14px; position:sticky; top:0; z-index:10; }
header.top .logo { font-weight:800; color:var(--ink); text-decoration:none; display:flex; align-items:center; gap:10px; }
header.top .logo .mark { display:inline-flex; align-items:center; justify-content:center; width:26px; height:26px; border-radius:7px; background:var(--olive); color:#1d2021; font-size:15px; }
header.top .pill { font-size:12px; color:var(--green); background:rgba(184,187,38,.12); border:1px solid rgba(184,187,38,.35); border-radius:99px; padding:2px 10px; white-space:nowrap; }
header.top .spacer { flex:1; }
header.top .shim { font-family:ui-monospace, monospace; font-size:12px; color:var(--muted); }
header.top .tabs { display:flex; gap:6px; }
header.top .tabs a { font-size:13px; color:var(--muted); text-decoration:none; border:1px solid var(--line); border-radius:99px; padding:3px 13px; }
header.top .tabs a:hover { color:var(--green); border-color:var(--olive); }
header.top .tabs a.active { color:#1d2021; background:var(--olive); border-color:var(--olive); font-weight:700; }
#menuBtn { background:var(--panel2); color:var(--ink); border:1px solid var(--line); border-radius:8px; padding:4px 10px; cursor:pointer; font-size:14px; }
#menuBtn:hover { border-color:var(--olive); }
.layout { display:grid; grid-template-columns:230px 1fr; min-height:calc(100vh - 48px); }
body.navhidden .layout { grid-template-columns:1fr; }
body.navhidden nav.side { display:none; }
nav.side { border-right:1px solid var(--line); background:var(--panel); padding:14px 12px; display:flex; flex-direction:column; gap:4px; }
nav.side button { display:flex; gap:10px; align-items:flex-start; width:100%; text-align:left; border:0; background:none; padding:10px; border-radius:9px; cursor:pointer; font-size:13.5px; color:var(--ink); }
nav.side button small { display:block; color:var(--muted); font-size:12px; margin-top:2px; }
nav.side button:hover { background:#2e3230; }
nav.side button.active { background:rgba(184,187,38,.12); }
nav.side button.active strong { color:var(--green); }
nav.side .n { flex:none; width:22px; height:22px; border-radius:99px; border:1px solid var(--faint); color:var(--muted); font-size:12px; display:flex; align-items:center; justify-content:center; margin-top:1px; }
nav.side button.done .n { border-color:var(--olive); color:var(--green); }
nav.side button.active .n { border-color:var(--olive); color:#1d2021; background:var(--olive); font-weight:700; }
nav.side .built { margin-top:auto; border:1px solid var(--line); border-radius:10px; padding:12px; font-size:13px; color:var(--muted); }
nav.side .built a { color:var(--ink); text-decoration:none; display:block; margin-top:6px; }
main { padding:26px 28px; min-width:0; }
.step-grid { display:grid; grid-template-columns:minmax(0,5fr) minmax(0,7fr); gap:20px; align-items:start; }
@media (max-width:1000px){ .step-grid{grid-template-columns:1fr} }
@media (max-width:800px){ .layout{grid-template-columns:1fr} nav.side{display:none} header.top .shim{display:none} }
h2 { margin:0 0 10px; font-size:22px; }
p.lead { color:var(--muted); font-size:15px; line-height:1.6; margin:0 0 16px; }
.pattern { border:1px solid rgba(184,187,38,.4); background:rgba(184,187,38,.08); padding:12px 16px; border-radius:10px; margin:0 0 16px; font-size:14px; }
.pattern .ph { font-weight:700; margin-bottom:4px; }
.pattern .pd { color:var(--green); font-family:ui-monospace, monospace; font-size:13px; }
.pattern .pe { color:var(--orange); font-family:ui-monospace, monospace; font-size:13px; }
.how { font-size:14px; color:var(--muted); line-height:1.6; margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:10px; }
.how li { display:flex; gap:10px; align-items:flex-start; }
.how .rn { flex:none; width:20px; height:20px; border-radius:99px; border:1px solid var(--olive); color:var(--green); font-size:11px; display:flex; align-items:center; justify-content:center; }
.card { background:var(--panel); border:1px solid var(--line); border-radius:12px; padding:16px; }
.card + .card { margin-top:16px; }
.card h3 { margin:0 0 10px; font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); display:flex; align-items:center; gap:8px; }
.card h3 .right { margin-left:auto; display:flex; gap:8px; }
.mini { background:none; border:1px solid var(--line); color:var(--muted); border-radius:7px; padding:3px 10px; font-size:12px; cursor:pointer; }
.mini:hover { color:var(--green); border-color:var(--olive); }
.mini.on { color:#1d2021; background:var(--olive); border-color:var(--olive); font-weight:700; }
code.inline { background:#3c3836; color:var(--ink); padding:2px 7px; border-radius:6px; font-size:.88em; font-family:ui-monospace, monospace; }
.demo { border:2px dashed #504945; border-radius:12px; padding:16px; background:var(--panel2); }
.demo p { margin:10px 0; }
.demo hr { border:0; border-top:1px solid var(--line); margin:14px 0; }
.btn { background:var(--olive); color:#1d2021; border:0; border-radius:8px; padding:8px 14px; cursor:pointer; font-size:14px; font-weight:600; }
.btn:hover { background:var(--green); }
.btn.secondary { background:transparent; color:var(--ink); border:1px solid #504945; font-weight:400; }
.btn.secondary:hover { border-color:var(--olive); }
.btn:disabled { opacity:.45; cursor:not-allowed; }
input[type=text], input[type=number], select { padding:8px 10px; border:1px solid #504945; border-radius:8px; font-size:14px; background:#1d2021; color:var(--ink); }
input::placeholder { color:var(--faint); }
.pager { display:flex; justify-content:space-between; margin-top:22px; }
table.results { width:100%; border-collapse:collapse; font-size:14px; }
table.results td, table.results th { border-bottom:1px solid var(--line); padding:6px 8px; text-align:left; }
kbd { background:#3c3836; color:var(--ink); border:1px solid #504945; border-radius:6px; padding:1px 7px; font-size:12px; font-family:ui-monospace, monospace; }
footer.hint { color:var(--muted); font-size:13px; margin-top:14px; }
.sig { font-family:ui-monospace, monospace; font-size:12px; color:var(--muted); }
.delayed { animation:delayed-in 0s .3s backwards; }
@keyframes delayed-in { from { position:absolute; visibility:hidden; opacity:0; } }
pre { background:var(--code); color:var(--ink); padding:14px; border-radius:10px; overflow:auto; font-size:12.5px; line-height:1.65; border:1px solid var(--line); margin:0; font-family:'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }
#inspector { margin-top:22px; }
.CodeMirror { height:300px; border:1px solid var(--line); border-radius:0 0 10px 10px; padding:8px; font-size:13px; font-family:'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }
.cm-hint { color:var(--faint); font-style:italic; font-size:.92em; background:rgba(184,187,38,.08); border-radius:5px; padding:0 5px; margin-left:3px; white-space:nowrap; }
.etabs { display:flex; gap:6px; margin-bottom:-1px; }
.etab { background:none; border:1px solid var(--line); color:var(--muted); border-radius:8px 8px 0 0; border-bottom:0; padding:5px 14px; font-size:12.5px; font-family:'JetBrains Mono', ui-monospace, monospace; cursor:pointer; }
.etab:hover { color:var(--green); }
.etab.active { color:var(--green); background:var(--code); border-color:var(--olive); font-weight:700; }
.estatus { font-size:12px; font-family:ui-monospace, monospace; margin-top:8px; }
.estatus.ok { color:var(--green); }
.estatus.err { color:var(--red); }
/* multiplayer session chrome */
.sessbar { display:flex; align-items:center; gap:10px; font-size:13px; color:var(--muted); background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:8px 14px; margin-bottom:16px; }
.sessbar code.inline { color:var(--aqua); }
#s9_stage { position:relative; height:190px; border:2px dashed #504945; border-radius:12px; background:var(--panel2); overflow:hidden; cursor:crosshair; }
#s9_stage .stage-hint { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; color:var(--faint); font-size:13px; pointer-events:none; }
.caret { position:absolute; top:0; left:0; pointer-events:none; transition:top .12s linear, left .12s linear; z-index:2; }
.caret .cur { width:2px; height:16px; }
.caret .tag { font-size:10px; font-family:ui-monospace, monospace; padding:1px 6px; border-radius:5px; color:#1d2021; font-weight:700; white-space:nowrap; }
.dot { display:inline-block; width:9px; height:9px; border-radius:99px; margin-right:6px; vertical-align:baseline; }
.dot.on { background:var(--green); } .dot.off { background:var(--red); }
.banner { border:1px solid var(--line); border-radius:9px; padding:8px 12px; font-size:13px; margin-top:10px; }
.banner.off { border-color:var(--red); color:var(--red); background:rgba(251,73,52,.07); }
.banner.okb { border-color:var(--olive); color:var(--green); background:rgba(184,187,38,.07); }
ul.errs { margin:8px 0; padding:0; list-style:none; font-size:13px; }
ul.errs li { color:var(--red); margin:4px 0; }
ul.errs li::before { content:"✗ "; }
.ok-line { color:var(--green); font-size:13px; }
.dlg { border:1px solid var(--yellow); border-radius:10px; padding:12px 14px; margin-top:10px; background:rgba(250,189,47,.06); font-size:14px; }
.toast { border:1px solid var(--olive); border-radius:10px; padding:8px 12px; margin-top:10px; background:rgba(184,187,38,.08); font-size:13px; }
.rawstream { font-size:12px; }