:root{
  --bg:#0E3B45; --panel:rgba(6,30,36,.78); --line:rgba(234,246,244,.16); --ink:#EAF6F4; --soft:#A9CFCB; --accent:#F2A65A; --accent-ink:#2A1606;
  --font:'Sora',system-ui,-apple-system,'Segoe UI',sans-serif;
}
body[data-world="neon"]{--bg:#0B0620; --panel:rgba(14,6,34,.8); --line:rgba(220,200,255,.18); --ink:#F1EAFF; --soft:#B7A6E6; --accent:#39F3FF; --accent-ink:#04121A}
body[data-world="moss"]{--bg:#1C2A12; --panel:rgba(20,30,12,.8); --line:rgba(240,240,210,.16); --ink:#F2F0DC; --soft:#C3C6A0; --accent:#F4C95D; --accent-ink:#2A1E02}
body[data-world="ice"]{--bg:#CFE3EE; --panel:rgba(240,248,252,.82); --line:rgba(20,50,70,.16); --ink:#12303F; --soft:#4E6E80; --accent:#2F7DC1; --accent-ink:#FFFFFF}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;overflow:hidden;background:var(--bg);color:var(--ink);font-family:var(--font);touch-action:none;overscroll-behavior:none;
  -webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}
canvas{position:fixed;inset:0;width:100%;height:100%;display:block}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* HUD: fixed slots, tabular digits; nothing shifts while playing */
.hud{position:fixed;left:0;right:0;top:0;z-index:5;display:grid;grid-template-columns:40px 1fr 1fr 1fr 40px 40px;gap:8px;align-items:center;
  padding:calc(env(safe-area-inset-top,0px) + 10px) 14px 0;max-width:640px;margin:0 auto;pointer-events:none}
.hud > *{pointer-events:auto}
.ibtn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--panel);display:grid;place-items:center;color:var(--ink);cursor:pointer;text-decoration:none;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.ibtn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.ibtn.slot-off{visibility:hidden}
.ibtn .off{display:none}.ibtn[aria-pressed="true"] .on{display:none}.ibtn[aria-pressed="true"] .off{display:block}
.stat{display:flex;flex-direction:column;line-height:1.05;text-shadow:0 1px 8px rgba(0,0,0,.25)}
.stat.mid{align-items:center}.stat.right{align-items:flex-end}
.stat span{font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--soft)}
.stat b{font-weight:800;font-size:24px;font-variant-numeric:tabular-nums;min-width:3ch}
.stat.mid b{color:var(--accent)}
.power{position:fixed;left:50%;top:calc(env(safe-area-inset-top,0px) + 62px);transform:translateX(-50%);z-index:5;display:flex;align-items:center;gap:10px;
  padding:6px 12px;border-radius:999px;background:var(--panel);border:1px solid var(--line);font-size:13px;font-weight:700}
.power i{display:block;width:70px;height:6px;border-radius:3px;background:var(--line);overflow:hidden}
.power em{display:block;height:100%;width:100%;background:var(--accent);transform-origin:left}

/* panels */
.panel{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);z-index:6;width:min(calc(100% - 28px),440px);max-height:calc(100% - 28px);overflow-y:auto;
  background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:22px 20px 20px;backdrop-filter:blur(10px) saturate(1.2);-webkit-backdrop-filter:blur(10px) saturate(1.2);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.6);animation:rise .4s ease both;scrollbar-width:thin}
.panel.small{width:min(calc(100% - 28px),340px);text-align:center}
.panel.tiny{width:min(calc(100% - 28px),240px);text-align:center}
@keyframes rise{from{opacity:0;transform:translate(-50%,-47%)}}
h1{margin:0;font-weight:800;font-size:clamp(34px,9vw,44px);letter-spacing:-.02em;line-height:1}
.sub{margin:8px 0 14px;color:var(--soft);font-size:14px;line-height:1.45}
h2{margin:16px 0 8px;font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--soft)}
.worlds{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.world{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-end;gap:1px;min-height:74px;padding:10px 12px;border-radius:14px;border:2px solid transparent;
  cursor:pointer;text-align:left;color:#fff;overflow:hidden;box-shadow:inset 0 -40px 30px -20px rgba(0,0,0,.45);transition:transform .12s,border-color .15s}
.world b{font-size:15px;font-weight:700;position:relative}
.world span{font-size:11px;opacity:.85;position:relative}
.world[aria-checked="true"]{border-color:var(--accent);transform:translateY(-2px)}
.w-pond{background:radial-gradient(60% 80% at 30% 30%,#2E8C8A,transparent),linear-gradient(135deg,#0B4852,#06262E)}
.w-pond::before{content:"";position:absolute;right:12px;top:10px;width:26px;height:26px;border-radius:50%;background:#3C8F4A;box-shadow:-30px 14px 0 -6px #4AA35A}
.w-neon{background:linear-gradient(transparent 94%,rgba(170,90,255,.7) 95%) 0 0/18px 18px,linear-gradient(90deg,transparent 94%,rgba(170,90,255,.7) 95%) 0 0/18px 18px,linear-gradient(135deg,#1A0736,#07031A)}
.w-moss{background:radial-gradient(40% 60% at 70% 20%,rgba(255,230,140,.35),transparent),radial-gradient(circle at 30% 60%,#4E7A22,transparent 60%),linear-gradient(135deg,#2F4A16,#18270B)}
.w-ice{background:linear-gradient(100deg,transparent 30%,rgba(90,220,170,.4) 45%,transparent 60%),linear-gradient(135deg,#DDEFF8,#A9CBE0);color:#10303F}
.w-ice{box-shadow:inset 0 -40px 30px -24px rgba(255,255,255,.6)}
.skins{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.skin{display:flex;flex-direction:column;align-items:center;gap:5px;padding:8px 2px;border-radius:12px;border:1px solid transparent;background:transparent;cursor:pointer;font-size:12px;font-weight:600}
.skin i{display:block;width:40px;height:40px;border-radius:50%;box-shadow:inset -5px -6px 10px rgba(0,0,0,.35),inset 4px 5px 8px rgba(255,255,255,.35)}
.skin[aria-checked="true"]{border-color:var(--accent);background:rgba(255,255,255,.06)}
.s-jade i{background:radial-gradient(circle at 35% 30%,#8FE3B0,#2E9E6A 55%,#0F3D2A)}
.s-koi i{background:radial-gradient(circle at 65% 35%,#F26B21 22%,transparent 23%),radial-gradient(circle at 35% 70%,#1A1A1A 14%,transparent 15%),radial-gradient(circle at 35% 30%,#FFFFFF,#EDE6DA 60%,#9C9186)}
.s-coral i{background:repeating-linear-gradient(60deg,#E63946 0 8px,#111 8px 11px,#F4D35E 11px 15px,#111 15px 18px)}
.s-neon i{background:radial-gradient(circle,#E0FFFF 18%,#39F3FF 40%,#0A2A40 72%);box-shadow:0 0 14px #39F3FF}
.s-ghost i{background:radial-gradient(circle at 40% 35%,rgba(255,255,255,.9),rgba(190,170,255,.5) 50%,rgba(120,90,220,.25));border:1px solid rgba(255,255,255,.35)}
.seg{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:4px;border-radius:12px;background:rgba(0,0,0,.14);border:1px solid var(--line);margin-bottom:8px}
body[data-world="ice"] .seg{background:rgba(255,255,255,.4)}
.seg button{border:0;background:transparent;padding:8px 4px;border-radius:9px;font-size:13px;font-weight:600;cursor:pointer;color:var(--soft)}
.seg button[aria-checked="true"]{background:var(--accent);color:var(--accent-ink)}
.hint{margin:-2px 0 10px;font-size:12px;color:var(--soft);line-height:1.4}
.hint.center{text-align:center;margin:8px 0 0}
.toggles{display:flex;gap:6px;flex-wrap:wrap}
.tog{flex:1;min-width:88px;padding:9px 8px;border-radius:999px;border:1px solid var(--line);background:transparent;font-size:13px;font-weight:600;cursor:pointer;color:var(--soft)}
.tog[aria-pressed="true"]{border-color:var(--accent);color:var(--ink);background:rgba(255,255,255,.07);box-shadow:inset 0 0 0 1px var(--accent)}
.go{margin-top:16px;display:flex;flex-direction:column;align-items:center}
.bestline{margin:0 0 10px;font-size:13px;color:var(--soft)}
.bestline b{color:var(--ink);font-variant-numeric:tabular-nums}
.btn{font-weight:700;font-size:16px;border:0;border-radius:999px;padding:12px 30px;cursor:pointer;background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 24px -8px var(--accent);transition:transform .1s}
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--line)}
#playBtn{width:100%;font-size:18px;padding:14px}
.kicker{margin:0 0 6px;font-size:15px;font-weight:600;color:var(--soft)}
.final{display:flex;flex-direction:column;align-items:center;margin:4px 0 18px}
.final b{font-weight:800;font-size:56px;line-height:1;font-variant-numeric:tabular-nums}
.final span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--soft);margin-top:6px}
.final span.new{color:var(--accent)}
.row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
@media (prefers-reduced-motion:reduce){.panel{animation:none}}

/* setup: the score readouts wait until a run starts */
body.in-setup .stat{visibility:hidden}
.w-pond::before{width:20px;height:20px;right:10px;top:8px;box-shadow:-18px 10px 0 -5px #4AA35A}
/* on phones the setup becomes a bottom sheet so the live world stays visible above it */
@media (max-width:560px){
  #setup{top:auto;bottom:calc(env(safe-area-inset-bottom,0px) + 10px);transform:translateX(-50%);max-height:min(74%,640px);padding:16px 14px 14px;border-radius:20px;animation:sheet .4s ease both}
  @keyframes sheet{from{opacity:0;transform:translate(-50%,24px)}}
  #setup h1{font-size:28px}
  #setup .sub{display:none}
  #setup h2{margin:12px 0 6px}
  .worlds{grid-template-columns:repeat(4,1fr);gap:6px}
  .world{min-height:60px;padding:8px 7px;border-radius:12px}
  .world b{font-size:12px;line-height:1.15}
  .world span{display:none}
  .w-pond::before{width:14px;height:14px;right:7px;top:6px;box-shadow:-12px 7px 0 -4px #4AA35A}
  .skin{padding:6px 0;font-size:11px}
  .skin i{width:32px;height:32px}
  .seg button{padding:7px 4px}
  .tog{padding:8px 6px;min-width:0;font-size:12px}
  .go{margin-top:12px}
  .bestline{margin-bottom:8px}
  #playBtn{padding:12px}
  .hint.center{display:none}
}

/* wide but short screens (laptops): two columns so Play is always in view */
@media (min-width:720px) and (max-height:820px){
  #setup{width:min(calc(100% - 28px),800px);display:grid;grid-template-columns:1.1fr 1fr;column-gap:26px;align-items:start}
  #setup .col-b{padding-top:6px}
  #setup .col-b h2:first-child{margin-top:4px}
  .world{min-height:66px}
}

/* ?demo on the hub stage */
body.demo .hud,body.demo .panel,body.demo .power{display:none!important}
body.demo{pointer-events:none}