*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0}
/* Layout: single column play surface — header, status strip, square board, tool row. Path hue rotates per level. */
:root{
  --bg:#EDF0F6; --surface:#FFFFFF; --cell:#F6F8FC; --line:#D3DAE7;
  --ink:#151C2C; --muted:#667189; --wall:#151C2C; --scrim:rgba(14,19,32,.45);
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:"Figtree",ui-sans-serif,system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --hue:205;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D111C; --surface:#151B2A; --cell:#1A2134; --line:#283149;
  --ink:#E9EDF5; --muted:#8B95AC; --wall:#E9EDF5; --scrim:rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D111C; --surface:#151B2A; --cell:#1A2134; --line:#283149;
  --ink:#E9EDF5; --muted:#8B95AC; --wall:#E9EDF5; --scrim:rgba(0,0,0,.6); color-scheme:dark}
html,body{height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));
  -webkit-tap-highlight-color:transparent}
.app{max-width:520px;margin:0 auto;padding-block:18px 28px;display:flex;flex-direction:column;gap:14px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-family:var(--display);font-weight:800;font-size:30px;letter-spacing:-.02em;line-height:1;display:flex;align-items:center;gap:8px}
.brand i{display:inline-block;width:26px;height:12px;border-radius:6px;background:linear-gradient(90deg,hsl(var(--hue) 85% 55%),hsl(calc(var(--hue) + 70) 85% 58%))}
.hbtns{display:flex;gap:8px}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);
  font:700 16px var(--body);cursor:pointer;display:grid;place-items:center}
.icon-btn:focus-visible,.btn:focus-visible,.lv:focus-visible{outline:3px solid hsl(var(--hue) 85% 55%);outline-offset:2px}
.strip{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.lvl{display:flex;flex-direction:column;gap:2px}
.lvl small{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:600}
.lvl b{font-family:var(--display);font-weight:800;font-size:40px;line-height:.9;letter-spacing:-.03em}
.meta{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.chip{font:600 12px var(--body);padding:5px 9px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.chip.tier{color:hsl(var(--hue) 70% 42%);border-color:hsl(var(--hue) 60% 75%)}
:root[data-theme="dark"] .sheet .site a{color:hsl(var(--hue) 85% 70%)}
:root[data-theme="dark"] .chip.tier{color:hsl(var(--hue) 80% 70%);border-color:hsl(var(--hue) 40% 35%)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .sheet .site a{color:hsl(var(--hue) 85% 70%)}}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .chip.tier{color:hsl(var(--hue) 80% 70%);border-color:hsl(var(--hue) 40% 35%)}}
.timer{font-family:var(--mono);font-weight:700;font-variant-numeric:tabular-nums}
.boardwrap{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:10px;
  box-shadow:0 18px 40px -24px rgba(20,30,60,.35)}
svg#board{display:block;width:100%;height:auto;touch-action:none;user-select:none;cursor:pointer;border-radius:14px}
.progress{height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.progress span{display:block;height:100%;width:0;border-radius:3px;background:linear-gradient(90deg,hsl(var(--hue) 85% 55%),hsl(calc(var(--hue) + 70) 85% 58%));transition:width .2s}
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.tools.nav{margin-top:-6px}
.btn:disabled{opacity:.4;cursor:not-allowed}
.lvls{display:flex;gap:22px;align-items:flex-end}
.lvl.score b{font-size:26px;font-variant-numeric:tabular-nums}
.btn{height:48px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:600 14px var(--body);cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:6px}
a.btn{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.btn kbd{font:500 11px var(--mono);color:var(--muted)}
.hint-line{font-size:13px;color:var(--muted);text-align:center;min-height:18px}
/* sheets */
.scrim{position:fixed;inset:0;background:var(--scrim);display:grid;place-items:center;z-index:20;
  padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.sheet{background:var(--surface);color:var(--ink);border-radius:24px;padding:24px;width:100%;max-width:420px;max-height:85vh;overflow:auto;display:flex;flex-direction:column;gap:14px}
.sheet{position:relative}
.x{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;border:0;background:var(--cell);color:var(--muted);font:500 24px/1 var(--body);cursor:pointer;display:grid;place-items:center;padding:0 0 2px}
.x:hover{color:var(--ink)}
.x:focus-visible{outline:3px solid hsl(var(--hue) 85% 55%);outline-offset:2px}
.sheet .site a{color:hsl(var(--hue) 75% 45%);font-weight:600}
.sheet h2{padding-right:40px;font-family:var(--display);font-weight:800;font-size:28px;margin:0;letter-spacing:-.02em;text-wrap:balance}
.sheet p{margin:0;line-height:1.5;color:var(--muted)}
.rules{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.rules li{display:flex;gap:10px;align-items:flex-start;line-height:1.45}
.rules li b{flex:none;width:24px;height:24px;border-radius:50%;background:var(--ink);color:var(--surface);display:grid;place-items:center;font:700 12px var(--mono)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.stat{background:var(--cell);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:2px}
.stat small{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:600}
.stat b{font:700 20px var(--mono);font-variant-numeric:tabular-nums}
.stars{font-size:30px;letter-spacing:4px;text-align:center;color:hsl(45 95% 52%)}
.stars .off{color:var(--line)}
.row{display:flex;gap:8px}.row .btn{flex:1}
.levels{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.lv{aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:var(--cell);color:var(--ink);font:700 15px var(--mono);cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.lv small{font-size:9px;color:hsl(45 95% 48%);letter-spacing:1px}
.lv.cur{background:var(--ink);color:var(--surface)}
/* faded via colour rather than opacity so friend avatars on locked tiles stay crisp */
.lv:disabled{cursor:not-allowed;color:color-mix(in srgb,var(--ink) 35%,transparent);background:color-mix(in srgb,var(--cell) 35%,transparent);border-color:color-mix(in srgb,var(--line) 35%,transparent)}
canvas#fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:30}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.shake{animation:shake .22s}
@media (prefers-reduced-motion:reduce){.shake{animation:none}.progress span{transition:none}}
@media (pointer:coarse){.btn kbd{display:none}}
@media (max-width:400px){.lvl b{font-size:34px}.brand{font-size:26px}.btn{font-size:13px}.btn kbd{display:none}}
/* ---------- social ---------- */
.icon-btn{position:relative;padding:0;overflow:visible}
.icon-btn img{width:100%;height:100%;border-radius:11px;object-fit:cover}
.badge{position:absolute;top:-5px;right:-5px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:hsl(355 80% 55%);color:#fff;
  font:700 11px/18px var(--mono);text-align:center;box-shadow:0 0 0 2px var(--bg)}
.sheet h3{font:700 11px var(--body);text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:4px 0 -4px}
.me{display:flex;align-items:center;gap:12px}
.av{flex:none;width:40px;height:40px;border-radius:50%;background:hsl(var(--hue) 60% 88%);color:hsl(var(--hue) 60% 30%);
  display:grid;place-items:center;font:700 15px var(--body);overflow:hidden;object-fit:cover}
.av.sm{width:28px;height:28px;font-size:12px}
.av.xs{width:18px;height:18px;font-size:9px;box-shadow:0 0 0 1.5px var(--cell)}
.me b,.who b{display:block;font-weight:700;line-height:1.25}
.me span,.who span{display:block;font-size:13px;color:var(--muted);line-height:1.3}
.list{display:flex;flex-direction:column;gap:6px;margin:0;padding:0;list-style:none}
.list li{display:flex;align-items:center;gap:10px;background:var(--cell);border-radius:14px;padding:10px 12px}
.list .who{flex:1;min-width:0}
.list .who b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list .acts{display:flex;gap:6px}
.list .acts .btn{height:34px;padding:0 12px;font-size:13px;border-radius:10px}
.list li.you{background:hsl(var(--hue) 85% 58% / .14)}
.rank{flex:none;width:22px;text-align:center;font:700 14px var(--mono);color:var(--muted)}
.list .score{text-align:right;font:700 14px var(--mono);font-variant-numeric:tabular-nums}
.list .score small{display:block;font:400 11px var(--body);color:hsl(45 95% 48%);letter-spacing:1px}
.code{display:flex;align-items:center;gap:8px;background:var(--cell);border-radius:14px;padding:10px 12px}
.code span{flex:1;min-width:0;font:500 13px var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.field{display:flex;gap:8px}
.field input{flex:1;min-width:0;height:48px;border-radius:14px;border:1px solid var(--line);background:var(--cell);color:var(--ink);
  padding:0 14px;font:600 15px var(--mono);text-transform:uppercase;letter-spacing:.08em}
.field input::placeholder{text-transform:none;letter-spacing:0;font-family:var(--body);color:var(--muted)}
.field .btn{padding:0 16px}
.empty{font-size:14px;color:var(--muted);text-align:center;padding:8px 0}
.gsi{display:flex;justify-content:center;min-height:44px}
.board-note{font-size:14px;color:var(--ink);font-weight:600;text-align:center}
.lv{position:relative}
.lv .fr{position:absolute;bottom:-4px;right:-4px;display:flex}
.lv .fr .av+.av{margin-left:-6px}
.toast{position:fixed;left:50%;bottom:max(20px,env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:40;
  background:var(--ink);color:var(--surface);font:600 14px var(--body);padding:10px 16px;border-radius:12px;max-width:calc(100% - 32px)}
.stack{display:flex;flex-direction:column;gap:14px}