:root{
  --bg:#0C0D10;
  --bg2:#101218;
  --card:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.08);
  --txt:#E8EBF2;
  --dim:#8A90A0;
  --cyan:#4DD0E1;
  --violet:#7C5CFF;
  --green:#3DDC97;
  --red:#FF5D6C;
  --gold:#FFC65C;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
.hidden{display:none !important}

#game{display:flex;height:100vh;width:100vw}
#stage{position:relative;flex:1 1 auto;min-width:0}
#c{display:block;width:100%;height:100%}

#hud{position:absolute;top:14px;left:14px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.hud-pill{
  background:var(--card);border:1px solid var(--line);
  padding:7px 12px;border-radius:10px;font-size:14px;font-weight:600;
  display:flex;gap:8px;align-items:center;backdrop-filter:blur(8px)
}
.hud-k{font-size:10px;letter-spacing:.14em;color:var(--dim);font-weight:700}

#raceBoard{position:absolute;top:14px;right:14px;display:flex;flex-direction:column;gap:6px}
.rb{
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:6px 10px;font-size:13px;display:flex;gap:10px;align-items:center;min-width:150px;
  backdrop-filter:blur(8px)
}
.rb .dot{width:9px;height:9px;border-radius:50%}
.rb .nm{flex:1;color:var(--dim)}
.rb .vl{font-weight:700}

#toast{
  position:absolute;left:50%;bottom:32px;transform:translateX(-50%) translateY(10px);
  padding:10px 18px;border-radius:12px;font-weight:700;font-size:15px;
  opacity:0;transition:.25s;pointer-events:none;border:1px solid var(--line);
  background:rgba(12,13,16,.85);backdrop-filter:blur(8px)
}
#toast.on{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.good{color:var(--green);border-color:rgba(61,220,151,.35)}
#toast.bad{color:var(--red);border-color:rgba(255,93,108,.35)}

#panel{
  width:min(430px,40vw);flex:0 0 auto;padding:16px;display:flex;align-items:center;
  border-left:1px solid var(--line);background:linear-gradient(180deg,#0E1015,#0A0B0E)
}
.card{
  width:100%;background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:22px;backdrop-filter:blur(12px)
}
.screen .card{max-width:520px}
.card.wide{max-width:520px}

#qmeta{display:flex;gap:8px;margin-bottom:14px}
.tag{
  font-size:11px;letter-spacing:.1em;font-weight:700;color:var(--cyan);
  background:rgba(77,208,225,.1);border:1px solid rgba(77,208,225,.22);
  padding:4px 9px;border-radius:7px
}
.tag.alt{color:var(--dim);background:rgba(255,255,255,.04);border-color:var(--line)}

#timerWrap{height:3px;background:rgba(255,255,255,.07);border-radius:3px;overflow:hidden;margin-bottom:14px}
#timerBar{height:100%;width:100%;background:var(--cyan);transition:width .1s linear}
#timerWrap.hidden{display:none}

#qtext{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:18px;min-height:56px}

#answers{display:flex;flex-direction:column;gap:9px}
.ans{
  text-align:left;padding:13px 15px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  color:var(--txt);font-size:15px;font-family:inherit;transition:.14s;
  display:flex;gap:11px;align-items:center
}
.ans:hover:not(:disabled){background:rgba(124,92,255,.12);border-color:rgba(124,92,255,.4);transform:translateX(3px)}
.ans:disabled{cursor:default}
.ans .k{
  width:22px;height:22px;border-radius:6px;flex:0 0 auto;
  background:rgba(255,255,255,.06);display:grid;place-items:center;
  font-size:11px;font-weight:700;color:var(--dim)
}
.ans.right{background:rgba(61,220,151,.16);border-color:rgba(61,220,151,.5)}
.ans.wrong{background:rgba(255,93,108,.14);border-color:rgba(255,93,108,.45)}

button.ad{
  margin-top:12px;width:100%;padding:12px;border-radius:12px;cursor:pointer;
  background:rgba(255,198,92,.1);border:1px solid rgba(255,198,92,.35);
  color:var(--gold);font-weight:600;font-family:inherit;font-size:14px
}
button.ad:hover{background:rgba(255,198,92,.18)}

#feedback{margin-top:12px;font-size:14px;min-height:20px;color:var(--dim)}

.screen{
  position:fixed;inset:0;display:grid;place-items:center;padding:20px;
  background:radial-gradient(1000px 600px at 50% 0%,#151824,#0A0B0E 70%);z-index:50
}
h1{font-size:32px;letter-spacing:-.01em;margin-bottom:6px;font-weight:800}
h1 span{color:var(--cyan)}
.sub{color:var(--dim);font-size:14px;margin-bottom:20px}
.hint{color:var(--dim);font-size:12px;margin-top:14px;text-align:center}

.row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.row label{width:96px;flex:0 0 auto;font-size:13px;color:var(--dim);font-weight:600}
input{
  flex:1;background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--txt);padding:10px 13px;border-radius:10px;font-family:inherit;font-size:14px;outline:none
}
input:focus{border-color:rgba(77,208,225,.45)}

.modes{display:flex;gap:10px;margin:16px 0}
.mode{
  flex:1;text-align:left;padding:14px;border-radius:14px;cursor:pointer;
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--txt);font-family:inherit
}
.mode b{display:block;font-size:15px;margin-bottom:4px}
.mode span{font-size:12px;color:var(--dim);line-height:1.35;display:block}
.mode.active{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.45)}

.settings{border-top:1px solid var(--line);padding-top:16px;margin-top:4px}
.seg{display:flex;gap:6px}
.seg.full{width:100%;margin-bottom:16px}
.seg.full button{flex:1}
.seg button{
  padding:8px 14px;border-radius:9px;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;
  background:rgba(255,255,255,.03);border:1px solid var(--line);color:var(--dim)
}
.seg button.active{background:rgba(77,208,225,.14);border-color:rgba(77,208,225,.4);color:var(--cyan)}

.actions{display:flex;gap:10px;margin-top:20px}
button.primary{
  flex:1;padding:13px;border-radius:12px;cursor:pointer;font-family:inherit;font-size:15px;font-weight:700;
  background:linear-gradient(135deg,#6E4CFF,#4DD0E1);border:none;color:#08090C
}
button.primary:hover{filter:brightness(1.08)}
button.ghost,a.ghost{
  padding:13px 18px;border-radius:12px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--txt)
}
button.ghost:hover,a.ghost:hover{background:rgba(255,255,255,.08)}
a.ghost{text-decoration:none;display:grid;place-items:center;flex:0 0 auto;white-space:nowrap}
#btnQuit,#hud .homelink{padding:7px 14px;font-size:13px}

#rankList{max-height:44vh;overflow:auto;display:flex;flex-direction:column;gap:6px}
.rk{display:flex;gap:12px;align-items:center;padding:10px 13px;border-radius:10px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);font-size:14px}
.rk .pos{width:24px;font-weight:800;color:var(--dim)}
.rk .nm{flex:1;font-weight:600}
.rk .dt{font-size:11px;color:var(--dim)}
.rk .vl{font-weight:800;color:var(--cyan)}
.rk.first .pos{color:var(--gold)}
.empty{color:var(--dim);font-size:14px;text-align:center;padding:28px 0}

#resBig{font-size:64px;font-weight:800;line-height:1;color:var(--cyan);text-align:center;margin:8px 0 2px}
#result .sub{text-align:center}
#resRows{display:flex;flex-direction:column;gap:6px;margin-top:14px}

#adOverlay{position:fixed;inset:0;background:rgba(6,7,9,.92);display:grid;place-items:center;z-index:80}
.ad-box{width:min(420px,88vw);background:#101218;border:1px solid var(--line);border-radius:18px;padding:22px;text-align:center}
.ad-label{font-size:11px;letter-spacing:.2em;color:var(--gold);font-weight:800;margin-bottom:14px}
.ad-art{height:150px;border-radius:12px;margin-bottom:16px;
  background:linear-gradient(120deg,#1a1f2e,#2a2140,#132b30);
  background-size:200% 200%;animation:pan 4s ease-in-out infinite}
@keyframes pan{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.ad-bar{height:4px;background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden}
#adBar{height:100%;width:0;background:var(--gold);transition:width .1s linear}
.ad-count{margin-top:10px;font-size:13px;color:var(--dim)}

@media (max-width:700px){
  #raceBoard{top:56px;right:10px;left:10px;flex-direction:row;flex-wrap:wrap;justify-content:flex-end}
  .rb{min-width:0;padding:5px 8px;font-size:12px;gap:6px}
  .rb .nm{flex:0 0 auto}
}
@media (max-width:900px){
  #game{flex-direction:column}
  #stage{flex:1 1 55%}
  #panel{width:100%;border-left:none;border-top:1px solid var(--line);padding:12px;flex:1 1 45%;overflow:auto}
  #qtext{font-size:17px;min-height:0}
  .card{padding:16px}
}