:root{--bg:#101214;--panel:#181b1e;--line:#2a2f34;--ink:#eceff1;--mute:#9aa4ab;--red:#e8321e}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font:14px/1.35 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden}
canvas#view{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}
#top{position:fixed;left:0;right:0;top:0;display:flex;gap:14px;align-items:center;flex-wrap:wrap;padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));background:linear-gradient(var(--bg),rgba(16,18,20,.0));}
.brand{font-weight:800;font-size:20px;letter-spacing:.02em}
.brand span{color:var(--red);margin-left:3px}
#picker{display:flex;gap:8px 12px;align-items:center;flex-wrap:wrap;flex:1}
label{display:flex;gap:6px;align-items:center;color:var(--mute);font-size:12px;white-space:nowrap}
label.grow{flex:1;min-width:200px}
label.grow select{flex:1;min-width:0}
select,input[type=number],button{font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px 9px;min-height:34px}
input[type=number]{width:64px}
button{cursor:pointer}
button:hover{border-color:#4a525a}
button.primary{background:var(--red);border-color:var(--red);font-weight:600}
button:disabled{opacity:.5;cursor:default}
.check{gap:5px}
#status{position:fixed;left:50%;top:84px;transform:translateX(-50%);max-width:min(92vw,560px);padding:8px 14px;border-radius:8px;background:rgba(24,27,30,.92);border:1px solid var(--line);text-align:center;display:none}
#status.on{display:block}
#status.err{border-color:var(--red)}
#drivers{position:fixed;right:10px;top:96px;bottom:84px;width:190px;background:rgba(24,27,30,.88);border:1px solid var(--line);border-radius:8px;overflow:auto}
#drivers h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin:0;padding:8px 10px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;background:#181b1e}
#hideDrivers{min-height:24px;padding:0 8px}
#driverList{list-style:none;margin:0;padding:0 0 6px}
#driverList li{display:flex;align-items:center;gap:8px;padding:5px 10px;cursor:pointer}
#driverList li:hover{background:#20252a}
#driverList li.on{background:#2a3036}
#driverList .pos{width:18px;color:var(--mute);text-align:right;font-variant-numeric:tabular-nums}
#driverList .sw{width:4px;height:18px;border-radius:2px}
#driverList .nm{font-weight:600}
#drivers.collapsed{width:auto;bottom:auto}
#drivers.collapsed #driverList{display:none}
#bar{position:fixed;left:0;right:0;bottom:0;display:flex;gap:10px 14px;align-items:center;flex-wrap:wrap;padding:10px 14px;padding-bottom:max(10px,env(safe-area-inset-bottom));background:linear-gradient(rgba(16,18,20,0),var(--bg) 40%)}
#scrub{flex:1;min-width:140px;accent-color:var(--red)}
#size{width:90px;accent-color:var(--red)}
#clock,#hud{font-variant-numeric:tabular-nums;color:var(--mute);font-size:12px}
#hud{color:var(--ink);min-width:70px}
#credit{position:fixed;left:14px;bottom:2px;margin:0;font-size:10px;color:#9aa4ab;text-shadow:0 0 3px #000}
a{color:#9bc1e6}
@media (max-width:760px){
  #drivers{top:auto;bottom:96px;right:8px;left:8px;width:auto;max-height:150px}
  #driverList{display:flex;flex-wrap:wrap}
  #driverList li{padding:4px 8px}
  #driverList .pos{display:none}
  #status{top:auto;bottom:260px}
  label.grow{min-width:100%}
  #size{width:70px}
}

#alert{position:fixed;left:50%;top:132px;transform:translateX(-50%);padding:10px 18px;border-radius:8px;background:#d4140a;color:#fff;font-weight:700;display:none;box-shadow:0 4px 20px rgba(0,0,0,.4);text-align:center;max-width:92vw}
#alert.on{display:block}
#driverList li.crashed .nm::after{content:" ⚠";color:#ff5a4d}
#driverList li.crashed{background:rgba(212,20,10,.18)}
[hidden]{display:none!important}
@media (max-width:760px){#alert{top:96px}}