:root{color-scheme:dark;--bg:#101217;--panel:#181c24;--raised:#20252f;--line:#333a48;--white:#f6f8fd;--muted:#acb6c7;--accent:#c5ff55;--red:#ff5866;--radius:16px;font:16px/1.45 system-ui,-apple-system,sans-serif}
*{box-sizing:border-box}
body{margin:0;color:var(--white);background:radial-gradient(ellipse at 92% 0,#262b29 0,transparent 43%),var(--bg);min-height:100vh}
button,input,select{font:inherit}
button,input,select,a{touch-action:manipulation}
button{border:1px solid var(--line);border-radius:10px;padding:.63rem .85rem;background:var(--raised);color:var(--white);min-height:44px;cursor:pointer;font-weight:650}
button:hover{border-color:var(--accent)}
button:disabled{opacity:.45;cursor:default}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
button.primary{background:var(--accent);color:#151c09;border-color:var(--accent)}
button.subtle{background:transparent}
input,select{max-width:100%;min-width:0;min-height:44px;border:1px solid var(--line);border-radius:9px;padding:.6rem .7rem;background:#101319;color:var(--white)}
input[type=checkbox]{min-height:auto;accent-color:var(--accent);width:20px;height:20px}
label{display:grid;gap:.4rem;color:var(--muted)}
label.check{display:flex;align-items:center;gap:.7rem;padding:.35rem 0}
.shell{max-width:1430px;margin:auto;min-height:100vh;display:grid;grid-template-columns:210px minmax(0,1fr)}
.side{padding:1.7rem 1.15rem;display:flex;flex-direction:column;gap:2rem;border-right:1px solid var(--line);background:#12151ccc}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:850;letter-spacing:.08em;white-space:nowrap}
.brand strong{color:var(--accent)}
.brand small{display:block;color:var(--muted);font-size:.62rem;letter-spacing:.18em}
nav{display:grid;gap:.4rem}
nav button{text-align:left;background:transparent;border-color:transparent}
nav button.selected{background:#263222;color:var(--accent);border-color:#45513c}
.side-note{font-size:.78rem;color:var(--muted);margin-top:auto}
main{padding:1.5rem clamp(1rem,3.5vw,3.5rem) 3rem;min-width:0}
.top,.between{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.6rem}
.top{padding-bottom:1.05rem;border-bottom:1px solid var(--line);margin-bottom:1.25rem}
.tag,.eyebrow{font-size:.73rem;font-weight:750;letter-spacing:.12em;color:var(--accent)}
.tag i{display:inline-block;background:var(--accent);width:.55rem;height:.55rem;border-radius:50%;margin-right:.38rem}
h1,h2,h3,p{margin:0}
h1{font-size:clamp(2rem,6vw,4rem);line-height:1;letter-spacing:-.065em;overflow-wrap:anywhere}
h2{font-size:1.2rem;overflow-wrap:anywhere}
h3{font-size:1rem}
p+ p{margin-top:.5rem}
.lead{color:var(--muted);margin-top:.55rem}
.heading{margin-bottom:1.25rem}
.heading .eyebrow{margin-bottom:.4rem}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1rem;min-width:0}
.panel+.panel{margin-top:.8rem}
.muted,small{color:var(--muted)}
.controls{display:flex;flex-wrap:wrap;align-items:end;gap:.6rem;margin-top:.75rem}
.stack{display:grid;gap:.75rem}
.two{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:.85rem;align-items:start}
.two .panel{margin:0}
.keypad{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.35rem;max-width:340px;margin-top:.65rem}
.keypad button{padding:.45rem .15rem}
.fields{display:flex;gap:.4rem;flex-wrap:wrap}
.fields label{flex:1;min-width:68px}
.fields input{width:100%}
#total{width:min(100%,205px);font:750 1.35rem ui-monospace,monospace}
.flash{color:var(--accent);margin-top:.55rem;overflow-wrap:anywhere}
.list{list-style:none;padding:0;margin:.65rem 0 0}
.list li{padding:.6rem 0;border-top:1px solid var(--line);overflow-wrap:anywhere}
.list li:first-child{border-top:0}
.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,125px),1fr));gap:.5rem;margin-top:.65rem}
.metric-grid>div{background:#101319;border-radius:9px;padding:.65rem}
.metric-grid strong{display:block;font-size:1.3rem}
#toast{margin-top:.75rem;min-height:1.35em;color:var(--accent);overflow-wrap:anywhere}
#toast.error{color:#ff9eab}
@media(max-width:760px){
  .shell{display:block}
  .side{position:sticky;top:0;z-index:2;padding:.65rem 1rem;border-right:0;border-bottom:1px solid var(--line);gap:.4rem;background:#12151cf7}
  .brand img{width:30px;height:30px}
  .brand small,.side-note{display:none}
  nav{display:flex;overflow:auto;gap:.2rem;scrollbar-width:thin}
  nav button{white-space:nowrap;padding:.35rem .6rem;min-height:40px}
  main{padding-top:.8rem}
  .top{margin-bottom:.9rem}
  .two{grid-template-columns:1fr}
}

.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.arena{margin-bottom:1rem}
.arena-stage{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:3px;isolation:isolate;overflow:hidden;border:1px solid #41475c;border-radius:18px;background:#363c50;box-shadow:0 16px 45px #0008}
.arena-stage.arena-solo{grid-template-columns:minmax(0,1fr)}
.arena-player{--team:#68d9ff;--team-bg:#0c2234;min-width:0;display:grid;grid-template-rows:auto 1fr;background:var(--team-bg)}
.arena-player:nth-child(2){--team:#ff9771;--team-bg:#2b131e}
.arena-portrait{position:relative;display:block;isolation:isolate;height:clamp(190px,39vw,375px);overflow:hidden;border-bottom:3px solid var(--team);background:var(--team-bg)}
label.arena-portrait{cursor:pointer}
.arena-portrait:focus-within{outline:3px solid #fff;outline-offset:-4px}
.arena-image{width:100%;height:100%;display:block;object-fit:cover;object-position:center 32%}
.arena-portrait::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(0deg,#050813aa,transparent 40%,transparent 80%,#0508135c)}
.arena-badge,.arena-photo-action{position:absolute;z-index:1;border-radius:6px;font-size:.72rem;font-weight:800;line-height:1.2;color:#fff;background:#090c17dd;border:1px solid #ffffff42;padding:.45em .62em}
.arena-badge{top:.65rem;left:.65rem;text-transform:uppercase;letter-spacing:.075em}
.arena-player:nth-child(2) .arena-badge{left:auto;right:.65rem}
.arena-photo-action{bottom:.65rem;left:.65rem}
.arena-player:nth-child(2) .arena-photo-action{left:auto;right:.65rem}
.is-playing .arena-badge{background:var(--team);border-color:var(--team);color:#08111d}
.arena-vs{position:absolute;z-index:2;top:clamp(90px,19.5vw,184px);left:50%;transform:translate(-50%,-50%) skewX(-9deg);padding:.13em .28em;color:#fff6dc;background:#130d21ed;border:1px solid #f8c68c;border-radius:6px;box-shadow:0 0 22px #ff7634af,0 0 34px #7b69f74a;font:1000 italic clamp(1.75rem,7vw,4.75rem)/1 system-ui,sans-serif;letter-spacing:-.11em;text-shadow:0 0 .27em #ff7d29;pointer-events:none}
.arena-identity{display:grid;grid-template-rows:auto 1fr;gap:.55rem;align-items:center;padding:clamp(.45rem,2vw,1.1rem);text-align:center}
.arena-identity h2{color:#f6f9ff;font-size:clamp(.96rem,3.1vw,1.45rem);line-height:1.22}
.arena-profile{width:100%;min-height:44px;font-weight:750;color:var(--team);border-color:#ffffff45;background:#0b101a;text-align:center}
.arena-score{align-self:end;display:grid;gap:.32rem;justify-items:center;padding:clamp(.43rem,1.6vw,.92rem) .2rem .45rem;background:#07070b;border:1px solid #ffffff26;border-radius:9px}
.is-playing .arena-score{border-color:var(--team)}
.arena-score small{color:#c0becd;text-transform:uppercase;font-weight:720;letter-spacing:.075em;font-size:clamp(.61rem,2.2vw,.76rem)}
.led{display:flex;justify-content:center;gap:.14em;color:#ff4c56;font-size:clamp(1.33rem,7vw,3.8rem);filter:drop-shadow(0 0 5px #ff324b85)}
.led svg{width:.68em;height:1.08em;overflow:visible}
.led polygon{fill:#27161f}
.led polygon.lit{fill:currentColor}
.arena-actions{margin-top:1rem}
.arena-roster{display:flex;flex-wrap:wrap;list-style:none;padding:0;margin:.75rem 0 0;gap:.5rem}
.arena-roster li{display:flex;align-items:center;gap:.65rem;background:var(--panel);padding:.35rem .65rem;border:1px solid var(--line);border-radius:8px;overflow-wrap:anywhere}
.arena-roster strong{color:var(--red);font-variant-numeric:tabular-nums}
@media(max-width:420px){
  .arena-stage{border-radius:12px}
  .arena-portrait{height:clamp(155px,55vw,230px)}
  .arena-vs{top:clamp(75px,27.5vw,115px)}
  .arena-identity{gap:.4rem}
  .arena-badge,.arena-photo-action{font-size:.66rem}
}