:root{
  --bg:#05080f;--panel:rgba(8,14,28,.72);--line:rgba(0,212,255,.28);
  --ink:#d9e6f5;--mute:#8396b0;--cyan:#00d4ff;--violet:#7c3aed;--gold:#f5c542;
  --display:"Orbitron","Eurostile","Arial Black",system-ui,sans-serif;
  --mono:"Share Tech Mono",ui-monospace,"Consolas",monospace;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:var(--ink);font-family:var(--mono);overflow:hidden;overscroll-behavior:none}
canvas{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;image-rendering:auto}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

.hud{position:fixed;left:0;right:0;z-index:5;display:flex;align-items:center;gap:10px;padding:10px 14px;pointer-events:none}
.hud>*{pointer-events:auto}
.top{top:0;padding-top:calc(10px + env(safe-area-inset-top,0px));justify-content:space-between;background:linear-gradient(rgba(5,8,15,.8),transparent)}
.bottom{bottom:0;padding-bottom:calc(10px + env(safe-area-inset-bottom,0px));justify-content:center;flex-wrap:wrap;background:linear-gradient(transparent,rgba(5,8,15,.8))}
.brand{font-family:var(--display);font-weight:900;letter-spacing:.14em;font-size:1.05rem;color:#fff;text-shadow:0 0 14px rgba(0,212,255,.7)}
.seed{display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line);padding:3px 4px 3px 10px;backdrop-filter:blur(6px)}
.seed label{color:var(--mute);font-size:.78rem}
.seed input{width:9.5ch;background:transparent;border:0;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);font-size:1rem}
.seed input:focus{outline:none}
.seed button{background:rgba(0,212,255,.14);border:1px solid var(--line);padding:3px 10px;cursor:pointer}
.meta{display:flex;flex-direction:column;align-items:flex-end;font-size:.75rem;color:var(--mute);line-height:1.3}
#renderer{color:var(--cyan)}
.bottom button{background:var(--panel);border:1px solid var(--line);padding:7px 12px;font-size:.85rem;cursor:pointer;backdrop-filter:blur(6px)}
.bottom button:hover{border-color:var(--cyan)}
.bottom button[aria-pressed="true"]{border-color:var(--cyan);box-shadow:inset 0 0 0 1px var(--cyan);color:#fff}

.stick{position:fixed;z-index:4;width:96px;height:96px;margin:-48px 0 0 -48px;border:1.5px solid var(--line);border-radius:50%;display:none;pointer-events:none}
.stick::after{content:"";position:absolute;left:50%;top:50%;width:38px;height:38px;margin:-19px 0 0 -19px;border-radius:50%;background:rgba(0,212,255,.35);transform:translate(var(--dx,0),var(--dy,0))}

.toast{position:fixed;z-index:9;left:50%;top:calc(70px + env(safe-area-inset-top,0px));transform:translate(-50%,-8px);background:var(--panel);border:1px solid var(--line);padding:8px 14px;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}

.help,.start{position:fixed;inset:0;z-index:10;display:grid;place-items:center;padding:20px;background:rgba(3,5,10,.72);backdrop-filter:blur(4px)}
.help[hidden]{display:none}
.help-card,.start-card{max-width:520px;width:100%;background:rgba(8,14,28,.94);border:1px solid var(--line);padding:24px;box-shadow:0 0 60px -20px var(--cyan)}
.help h2{font-family:var(--display);font-weight:500;letter-spacing:.06em;margin:0 0 14px;font-size:1.1rem}
.help dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:0 0 14px;font-size:.92rem}
.help dt{color:var(--mute)}.help dd{margin:0}
.help p{color:var(--mute);font-size:.88rem}
.help-card button,.start-card button{background:rgba(0,212,255,.16);border:1px solid var(--cyan);padding:10px 18px;cursor:pointer;font-size:1rem}
.start{transition:opacity .6s}
.start.gone{opacity:0;pointer-events:none}
.start-card{text-align:center;background:transparent;border:0;box-shadow:none}
.start-brand{font-family:var(--display);font-weight:900;font-size:clamp(2.6rem,12vw,5rem);letter-spacing:.08em;color:#fff;text-shadow:0 0 30px rgba(0,212,255,.6)}
.start-msg{color:#c6d8ea;max-width:42ch;margin:14px auto 22px;line-height:1.6}
.start-card button:disabled{opacity:.6;cursor:wait}
.start-small{color:var(--mute);font-size:.8rem;margin-top:18px}
@media (max-width:640px){
  .bottom button{padding:6px 9px;font-size:.78rem}
  .meta{display:none}
  .seed label{display:none}
}
@media (prefers-reduced-motion: reduce){.start,.toast{transition:none}}

.bench-out{white-space:pre-wrap;font-family:var(--mono);font-size:.82rem;background:rgba(0,0,0,.35);border:1px solid var(--line);padding:12px;max-height:50vh;overflow:auto;margin:0 0 12px}
#bench-copy{margin-right:8px}
.help a{color:var(--cyan)}
.help code{color:var(--cyan)}
.open-full{display:none}
/* Mode intégré (iframe sur TRUvector.net) : interface réduite */
body.embed .hud.top .seed,body.embed .hud.top .meta,body.embed .hud.bottom{display:none}
body.embed .open-full{display:block;position:fixed;z-index:6;right:12px;bottom:12px;background:var(--panel);border:1px solid var(--cyan);padding:8px 14px;cursor:pointer;backdrop-filter:blur(6px)}
body.embed .start-small{display:none}

.status{position:fixed;z-index:5;left:50%;transform:translateX(-50%);top:calc(58px + env(safe-area-inset-top,0px));font-family:var(--display);font-size:.78rem;letter-spacing:.08em;color:var(--gold);text-shadow:0 0 10px rgba(245,197,66,.5);pointer-events:none;white-space:nowrap}
.charge{position:fixed;z-index:5;left:50%;top:50%;width:64px;height:64px;margin:-32px 0 0 -32px;border-radius:50%;pointer-events:none;
  background:conic-gradient(var(--cyan) calc(var(--p,0) * 360deg),rgba(0,212,255,.12) 0);
  -webkit-mask:radial-gradient(circle,transparent 26px,#000 27px);mask:radial-gradient(circle,transparent 26px,#000 27px)}
.charge[hidden]{display:none}
body.embed .status{display:none}

.peers{position:fixed;inset:0;z-index:3;pointer-events:none;overflow:hidden}
.peer{position:absolute;left:0;top:0;margin:-9px 0 0 -9px;padding-left:24px;font-size:.75rem;color:#fff;white-space:nowrap;text-shadow:0 0 6px #000;transform-origin:9px 9px}
.peer::before{content:"";position:absolute;left:0;top:0;width:18px;height:18px;border-radius:50%;background:radial-gradient(circle,#fff 0 15%,var(--gold) 35%,transparent 70%);box-shadow:0 0 18px var(--gold)}
.peer[hidden]{display:none}
.board-list{margin:0 0 12px;padding:0;list-style:none;max-height:40vh;overflow:auto}
.board-list li{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px solid var(--line)}
.board-list b{color:var(--gold);font-weight:normal}
.profile-form{margin:0 0 12px}
.profile-form label{display:block;color:var(--mute);font-size:.85rem;margin-bottom:6px}
.profile-form div{display:flex;gap:8px}
.profile-form input{flex:1;background:rgba(0,0,0,.35);border:1px solid var(--line);color:var(--ink);padding:8px}
#profile-forget{margin-right:8px}
body.embed .peers{display:none}