:root{
  --bg0:#050816;
  --bg1:#0c1431;
  --bg2:#121d46;
  --panel:rgba(14,22,51,.72);
  --panel2:rgba(20,31,72,.88);
  --glass:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.13);
  --line2:rgba(109,247,210,.24);
  --text:#f6fbff;
  --muted:#a7b3d8;
  --accent:#6df7d2;
  --accent2:#8f7cff;
  --accent3:#ffd469;
  --accent4:#35a8ff;
  --bad:#ff648b;
  --good:#67ff9b;
  --shadow:0 28px 80px rgba(0,0,0,.4);
  --shadow-soft:0 12px 32px rgba(0,0,0,.28);
  --radius:28px;
  --safe-bottom:env(safe-area-inset-bottom,0px);
}

*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(109,247,210,.16), transparent 22rem),
    radial-gradient(circle at 86% 14%, rgba(143,124,255,.22), transparent 20rem),
    radial-gradient(circle at 50% 100%, rgba(255,212,105,.12), transparent 28rem),
    linear-gradient(135deg,var(--bg0),var(--bg1) 45%,var(--bg2));
  overflow:hidden;
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.18;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at center, #000 35%, transparent 100%);
}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.55;filter:saturate(.5)}
a{color:var(--accent)}

.bg-orbs{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.bg-orbs span{position:absolute;width:18rem;height:18rem;border-radius:999px;filter:blur(24px);opacity:.25;animation:floatOrb 12s ease-in-out infinite alternate}
.bg-orbs span:nth-child(1){left:-6rem;top:10%;background:#6df7d2}
.bg-orbs span:nth-child(2){right:-6rem;top:6%;background:#9b7cff;animation-delay:-3s}
.bg-orbs span:nth-child(3){left:36%;bottom:-8rem;background:#ffd469;animation-delay:-6s}
.bg-orbs span:nth-child(4){right:14%;bottom:10%;background:#35a8ff;animation-delay:-9s}
@keyframes floatOrb{to{transform:translate3d(2rem,-2rem,0) scale(1.12)}}

.app-shell{position:relative;z-index:1;width:min(1280px,100%);height:100dvh;display:grid;place-items:center;padding:10px 10px calc(10px + var(--safe-bottom))}
.loading-card,.screen-card{
  width:100%;height:100%;max-height:920px;min-height:0;position:relative;overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.04) 18%, rgba(11,18,44,.74));
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.loading-card::before,.screen-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at top left, rgba(109,247,210,.12), transparent 28%),
    radial-gradient(circle at top right, rgba(143,124,255,.14), transparent 30%),
    linear-gradient(180deg, rgba(255,255,255,.08), transparent 18%);
}
.loading-card{max-width:540px;max-height:420px;margin:auto;text-align:center;padding:42px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.logo-mark{width:78px;height:78px;margin:0 auto 16px;display:grid;place-items:center;border-radius:24px;border:1px solid var(--line);font-size:40px;background:linear-gradient(135deg,rgba(109,247,210,.2),rgba(143,124,255,.2));box-shadow:0 18px 45px rgba(109,247,210,.15)}

h1,h2,h3,p{margin-top:0}
.loading-card h1,.hero-title{font-size:clamp(2.15rem,6.2vw,5.1rem);line-height:.92;letter-spacing:-.08em;margin:0 0 10px;text-wrap:balance}
.hero-title span{display:block;background:linear-gradient(90deg,#fff 0%, var(--accent) 35%, #ebdeff 70%, var(--accent3));-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 40px rgba(109,247,210,.12)}
.subtitle{color:var(--muted);font-size:clamp(.94rem,1.5vw,1.05rem);line-height:1.45;max-width:680px;margin:0 auto 16px;text-wrap:balance}
.result-title{font-size:clamp(2rem,6vw,4.2rem);line-height:.95;letter-spacing:-.07em;margin-bottom:8px}

.home-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:14px;align-items:stretch;padding:14px}
.hero-panel,.mode-panel{min-height:0;border-radius:24px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.04);position:relative;overflow:hidden}
.hero-panel{padding:22px 24px;display:flex;flex-direction:column;justify-content:center;gap:14px;isolation:isolate}
.hero-panel::before{content:"";position:absolute;inset:auto auto -40px -40px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,var(--accent),transparent 72%);filter:blur(24px);opacity:.16;z-index:-1}
.hero-panel::after{content:"?";position:absolute;right:28px;top:24px;font-size:100px;font-weight:1000;line-height:1;color:rgba(255,255,255,.06);text-shadow:0 0 40px rgba(109,247,210,.12)}
.hero-badges{margin-bottom:0}
.hero-emblem{height:170px;display:grid;place-items:center;position:relative}
.hero-planet{width:140px;height:140px;border-radius:50%;position:relative;background:
  radial-gradient(circle at 35% 30%, rgba(255,255,255,.2), transparent 22%),
  radial-gradient(circle at 40% 40%, rgba(109,247,210,.95), rgba(53,168,255,.55) 60%, rgba(8,18,55,.82) 100%);
  box-shadow:0 0 0 8px rgba(109,247,210,.08), 0 0 70px rgba(53,168,255,.25), inset -20px -16px 30px rgba(0,0,0,.28);
}
.hero-planet::before,.hero-planet::after{content:"";position:absolute;border-radius:50%;inset:-18px;border:1px solid rgba(255,255,255,.12)}
.hero-planet::after{inset:-34px;border-color:rgba(143,124,255,.18)}
.hero-vs{position:absolute;bottom:10px;right:calc(50% - 85px);padding:10px 13px;border-radius:16px;font-weight:1000;letter-spacing:.04em;color:#08101e;background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 10px 24px rgba(143,124,255,.28)}
.badges{display:flex;flex-wrap:wrap;gap:8px}
.badge{display:inline-flex;align-items:center;gap:7px;padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--line);color:#eff4ff;font-weight:800;font-size:.82rem;white-space:nowrap}
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.feature{padding:13px 14px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.03));box-shadow:var(--shadow-soft)}
.feature b{display:block;font-size:.98rem;margin-bottom:4px}.feature small{color:var(--muted);line-height:1.28;display:block}
.compact-features .feature{min-height:74px}

.mode-panel{padding:20px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.panel-title-wrap{display:grid;gap:4px;margin-bottom:2px}
.section-kicker{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:#d8e0ff;opacity:.78}
.panel-title{font-size:1.6rem;line-height:1;letter-spacing:-.04em;margin:0}
.input-group{display:grid;gap:7px;margin-bottom:8px}
.input-label{font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.09em;color:#ced7f4}
.input,.select{
  width:100%;min-width:0;border:none;outline:none;border-radius:18px;padding:14px 15px;color:var(--text);
  background:rgba(4,9,24,.42);border:1px solid rgba(255,255,255,.14);box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.input::placeholder{color:#8190b7}
.input:focus,.select:focus{border-color:rgba(109,247,210,.7);box-shadow:0 0 0 4px rgba(109,247,210,.1)}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.cta-stack{display:grid;gap:10px}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}.btn-row>*{flex:1 1 auto}
.btn{
  border:0;border-radius:18px;padding:14px 16px;font-weight:1000;color:#07101f;background:linear-gradient(135deg,var(--accent),#b3ffe9);
  box-shadow:0 12px 24px rgba(109,247,210,.18), inset 0 1px 0 rgba(255,255,255,.48);
  display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;text-decoration:none;position:relative;overflow:hidden;
  transition:transform .15s ease, filter .15s ease, box-shadow .15s ease;
}
.btn::after{content:"";position:absolute;inset:0;transform:translateX(-120%);background:linear-gradient(100deg,transparent,rgba(255,255,255,.3),transparent);transition:transform .55s ease}
.btn:hover{transform:translateY(-1px);filter:brightness(1.04)}
.btn:hover::after{transform:translateX(120%)}
.btn:active{transform:translateY(1px) scale(.99)}
.btn.secondary{background:rgba(255,255,255,.08);color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn.purple{background:linear-gradient(135deg,#8f7cff,#d7ccff);box-shadow:0 12px 24px rgba(143,124,255,.22);color:#12081f}
.btn.gold{background:linear-gradient(135deg,#ffd469,#ffebb0);box-shadow:0 12px 24px rgba(255,212,105,.22);color:#291900}
.btn.danger{background:linear-gradient(135deg,#ff648b,#ffadc0);box-shadow:0 12px 24px rgba(255,100,139,.22);color:#270311}
.leave-btn{min-width:112px;align-self:end}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:4px 0}
.micro{font-size:.83rem;color:var(--muted);line-height:1.35;margin:2px 0 0}
.compact-copy{font-size:.8rem}
.mini-gap{margin-bottom:4px}
.code-input{text-transform:uppercase;letter-spacing:.12em;font-weight:900;text-align:center}
.join-card{display:grid;gap:4px}

.topbar{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02))}
.brand-mini{display:flex;align-items:center;gap:10px;font-weight:1000;white-space:nowrap}
.brand-mini .mini-logo{width:38px;height:38px;border-radius:14px;display:grid;place-items:center;background:rgba(109,247,210,.12);border:1px solid var(--line)}
.scorebar{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;width:100%;max-width:760px;margin-left:auto}
.player-pill{padding:9px 11px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;box-shadow:var(--shadow-soft)}
.player-pill b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.92rem}.player-pill strong{font-size:1.05rem;color:var(--accent3)}
.vs-dot{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--accent2),var(--accent));display:grid;place-items:center;font-weight:1000;color:#08101e;box-shadow:0 10px 24px rgba(143,124,255,.22)}
.practice-hud{display:flex;gap:8px;justify-content:flex-end;align-items:center;flex-wrap:wrap}
.chip{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid var(--line);font-size:.79rem;font-weight:900;color:#eaf1ff;display:inline-flex;align-items:center;gap:6px}
.chip.good{background:rgba(103,255,155,.12);color:#d9ffe4;border-color:rgba(103,255,155,.26)}
.chip.bad{background:rgba(255,100,139,.12);color:#ffe1ea;border-color:rgba(255,100,139,.28)}

.game-screen{display:flex;flex-direction:column}
.game-layout{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:12px;align-items:stretch;padding:12px}
.question-card,.side-card{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.04));border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-soft)}
.question-card{padding:14px 14px 16px;display:flex;flex-direction:column;min-height:0;overflow:hidden}
.question-card::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),var(--accent2),var(--accent3))}
.question-meta{display:flex;gap:8px;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap}
.timer-wrap{display:grid;gap:7px;margin:0 0 12px}.timer-line{height:10px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;border:1px solid rgba(255,255,255,.1)}.timer-fill{height:100%;width:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent3));box-shadow:0 0 20px rgba(109,247,210,.24);transition:width .35s linear}.timer-text{display:flex;justify-content:space-between;color:var(--muted);font-size:.86rem}.timer-text strong{color:#fff}
.question-title{font-size:clamp(1.18rem,2.1vw,1.9rem);line-height:1.08;letter-spacing:-.03em;margin:0 0 12px;text-wrap:balance}
.image-box{display:none;position:relative;margin:0 0 12px;border-radius:20px;overflow:hidden;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.2);min-height:120px;box-shadow:var(--shadow-soft)}
.image-box.visible{display:block}
.image-box img{display:block;width:100%;height:min(22vh,190px);object-fit:cover}
.image-credit{position:absolute;left:8px;right:8px;bottom:8px;background:rgba(4,8,20,.7);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(10px);padding:7px 9px;border-radius:12px;font-size:.73rem;color:#dce5ff}.image-credit a{color:#fff;font-weight:800;text-decoration:none}
.options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.option-btn{position:relative;border:none;text-align:left;border-radius:18px;padding:14px 14px 14px 46px;color:var(--text);background:rgba(255,255,255,.08);border:1px solid var(--line);min-height:58px;font-weight:850;transition:transform .12s ease, background .12s ease, border .12s ease, box-shadow .12s ease;box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
.option-btn:hover{transform:translateY(-1px);background:rgba(255,255,255,.11);box-shadow:0 10px 24px rgba(0,0,0,.18)}
.option-btn .letter{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:8px;display:grid;place-items:center;background:rgba(109,247,210,.14);color:var(--accent);font-weight:1000;font-size:.78rem}
.option-btn.correct{border-color:rgba(103,255,155,.62);background:rgba(103,255,155,.12)}
.option-btn.wrong{border-color:rgba(255,100,139,.62);background:rgba(255,100,139,.12)}
.answer-form{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:14px;align-items:stretch}.answer-form .input{font-size:1.02rem;min-height:52px}
.hint-text{color:var(--muted);font-size:.86rem;line-height:1.35;margin:8px 0 0}
.reveal-box{margin-top:14px;padding:12px;border-radius:18px;background:rgba(0,0,0,.18);border:1px solid var(--line)}
.reveal-box h3{margin:0 0 6px;font-size:1rem}.reveal-box p{margin:0;color:#dce4ff;line-height:1.38}.explanation{color:#bdc8e8!important;margin-top:7px!important}

.side-panel{display:grid;grid-template-rows:auto auto auto;gap:10px;min-height:0;align-content:start}
.side-card{padding:14px}
.side-card h3{margin:0 0 8px;font-size:.98rem}
.hud-card{display:flex;flex-direction:column;justify-content:center}
.answer-status{display:grid;gap:8px}.status-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px;border-radius:15px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08)}.status-row .dot{width:10px;height:10px;border-radius:999px;background:#737d9d}.status-row.done .dot{background:var(--good);box-shadow:0 0 18px rgba(103,255,155,.55)}.status-row.bad .dot{background:var(--bad)}

.lobby{padding:28px;text-align:center;max-width:780px;margin:auto;display:flex;flex-direction:column;align-items:center;justify-content:center}
.compact-lobby{gap:8px}
.lobby-code{display:inline-flex;align-items:center;justify-content:center;margin:8px auto 10px;padding:12px 16px;border-radius:20px;background:rgba(0,0,0,.22);border:1px dashed rgba(255,255,255,.22);font-size:clamp(1.35rem,5vw,2.55rem);letter-spacing:.12em;font-weight:1000;color:var(--accent3);min-width:min(100%,360px)}
.copy-grid{display:grid;grid-template-columns:1fr auto;gap:10px;margin:8px auto;max-width:640px;width:100%}.copy-grid input{min-width:0}
.lobby-actions,.invite-actions{width:min(100%,620px)}
.invite-input{width:min(100%,400px);margin:0 auto 6px}
.lobby-status-card{width:min(100%,520px)}
.waiting-pulse{width:16px;height:16px;margin:4px auto 0;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(109,247,210,.8);animation:pulse 1.35s infinite}
@keyframes pulse{to{box-shadow:0 0 0 22px rgba(109,247,210,0)}}

.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0;width:min(100%,680px)}
.compact-results{max-width:620px}
.versus-results{grid-template-columns:1fr 1fr;max-width:540px}
.result-stat{padding:15px;border-radius:20px;background:rgba(255,255,255,.07);border:1px solid var(--line);box-shadow:var(--shadow-soft)}
.result-stat span{display:block;color:var(--muted);font-size:.86rem;margin-bottom:6px}.result-stat b{display:block;font-size:1.75rem;color:var(--accent3)}

.toast{position:fixed;left:50%;bottom:calc(16px + var(--safe-bottom));transform:translateX(-50%) translateY(18px);background:rgba(5,10,25,.92);border:1px solid var(--line);color:#fff;padding:12px 16px;border-radius:18px;box-shadow:var(--shadow);z-index:20;opacity:0;pointer-events:none;transition:opacity .2s ease, transform .2s ease;max-width:min(92vw,520px);text-align:center}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.spark{position:fixed;width:9px;height:9px;border-radius:50%;pointer-events:none;background:var(--accent3);z-index:30;animation:spark .7s ease-out forwards}@keyframes spark{to{transform:translate(var(--x),var(--y)) scale(.1);opacity:0}}
.hidden{display:none!important}.center{text-align:center}.mt{margin-top:12px}.desktop-only{display:initial}



/* Desktop-focused stage improvements */
.main-stage{justify-content:flex-start}
.main-stage.no-image{background:
  radial-gradient(circle at 50% 46%, rgba(109,247,210,.08), transparent 20%),
  radial-gradient(circle at 50% 46%, rgba(143,124,255,.08), transparent 34%),
  linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.04));}
.main-stage.no-image::after{content:"?";position:absolute;left:50%;top:50%;transform:translate(-50%,-52%);font-size:clamp(120px,18vw,240px);font-weight:1000;line-height:1;color:rgba(255,255,255,.045);text-shadow:0 0 55px rgba(109,247,210,.12);pointer-events:none}
.main-stage .question-meta,.main-stage .timer-wrap,.main-stage .question-title,.main-stage .options,.main-stage .answer-form,.main-stage .reveal-box,.main-stage .hint-text,.main-stage .image-box{width:min(100%,980px);margin-left:auto;margin-right:auto}
.main-stage .question-title{text-align:left}
.main-stage.no-image .question-title{text-align:center;max-width:900px;font-size:clamp(1.7rem,3vw,3rem);margin-top:10px;margin-bottom:8px}
.main-stage.no-image .question-meta{justify-content:center}
.main-stage.no-image .timer-wrap{margin-bottom:14px}
.main-stage.no-image .options{margin-top:22px}
.main-stage.with-image .question-title{max-width:100%}
.main-stage .image-box{margin-bottom:14px}
.hud-panel .side-card{min-height:0}
.hud-panel .hud-card{min-height:116px}
.hud-panel > .btn{height:auto}

@media (min-width:1100px){
  .app-shell{padding:14px 18px calc(14px + var(--safe-bottom))}
  .screen-card{max-height:880px}
  .game-layout{grid-template-columns:minmax(0,1fr) 300px;gap:14px;padding:14px}
  .question-card{padding:18px 18px 20px}
  .question-title{font-size:clamp(1.4rem,2.1vw,2.5rem)}
  .side-panel{gap:12px}
}

@media (min-width:1300px){
  .game-layout{grid-template-columns:minmax(0,1fr) 320px}
  .main-stage .question-title{width:min(100%,1060px)}
  .main-stage .options{width:min(100%,1040px)}
}

@media (max-width:980px){
  .screen-card,.loading-card{max-height:none}
  .home-grid{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .hero-panel{padding:18px 18px 12px;gap:12px}
  .mode-panel{padding:18px}
  .hero-emblem{height:132px}.hero-planet{width:110px;height:110px}.hero-vs{right:calc(50% - 72px)}
  .topbar{grid-template-columns:1fr;gap:10px}
  .scorebar{margin-left:0;max-width:none}
  .game-layout{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) auto}
  .side-panel{grid-template-columns:1.2fr 1fr auto;grid-template-rows:none;align-items:stretch}
}

@media (max-width:700px){
  :root{--radius:22px}
  .app-shell{padding:8px 8px calc(8px + var(--safe-bottom))}
  .screen-card,.loading-card{border-radius:22px}
  .home-grid{padding:8px;gap:8px}
  .hero-panel,.mode-panel{border-radius:20px}
  .hero-panel{padding:14px 14px 10px;gap:10px}
  .hero-panel::after{font-size:70px;right:14px;top:12px}
  .hero-emblem{height:104px}.hero-planet{width:84px;height:84px}.hero-vs{padding:8px 11px;font-size:.85rem;right:calc(50% - 58px);bottom:8px}
  .hero-title{font-size:clamp(2rem,11vw,3.3rem)}
  .subtitle{font-size:.9rem;margin-bottom:12px}
  .features{grid-template-columns:1fr 1fr;gap:8px}
  .feature{padding:11px 10px;border-radius:16px;min-height:68px}
  .feature b{font-size:.88rem}.feature small{font-size:.76rem}
  .badge{font-size:.72rem;padding:7px 9px}
  .mode-panel{padding:14px;gap:8px}
  .panel-title{font-size:1.35rem}
  .input,.select{padding:12px 13px;border-radius:16px}
  .duo{grid-template-columns:1fr 1fr;gap:8px}
  .btn{min-height:46px;border-radius:16px;padding:12px 14px;font-size:.94rem}
  .btn-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .copy-grid{grid-template-columns:1fr}
  .lobby{padding:16px 12px}
  .lobby-code{font-size:clamp(1.1rem,6vw,2rem);letter-spacing:.08em;width:100%}
  .topbar{padding:10px 10px 8px}
  .brand-mini .mini-logo{width:32px;height:32px;border-radius:12px}
  .brand-mini{font-size:.94rem}
  .scorebar{grid-template-columns:1fr auto 1fr;gap:6px}
  .player-pill{padding:8px 9px;border-radius:14px}.player-pill b{font-size:.78rem}.player-pill strong{font-size:.95rem}
  .vs-dot{width:34px;height:34px;border-radius:11px;font-size:.8rem}
  .practice-hud{justify-content:flex-start}
  .chip{font-size:.72rem;padding:6px 8px}
  .game-layout{gap:8px;padding:8px}
  .question-card{padding:11px;border-radius:20px}
  .question-meta{margin-bottom:8px}
  .question-title{font-size:clamp(1rem,5.4vw,1.28rem);margin-bottom:10px}
  .image-box{border-radius:16px;margin-bottom:10px}
  .image-box img{height:118px}
  .options{grid-template-columns:1fr;gap:8px}
  .option-btn{min-height:52px;padding:12px 12px 12px 42px;border-radius:16px;font-size:.9rem}
  .option-btn .letter{left:10px;width:22px;height:22px}
  .answer-form{grid-template-columns:1fr;gap:8px}
  .answer-form .input{min-height:48px;font-size:.98rem}
  .reveal-box{padding:10px;border-radius:16px}
  .hint-text,.micro{font-size:.78rem}
  .side-panel{grid-template-columns:1fr 1fr auto;gap:8px}
  .side-card{padding:10px;border-radius:18px}.side-card h3{font-size:.84rem;margin-bottom:6px}
  .status-row{padding:8px;border-radius:12px;font-size:.76rem}
  .leave-btn{min-width:auto;padding-left:10px;padding-right:10px}
  .result-grid{grid-template-columns:1fr;gap:8px}
}

@media (max-width:430px){
  .features{grid-template-columns:1fr 1fr}
  .duo{grid-template-columns:1fr 1fr}
  .btn-row{grid-template-columns:1fr}
  .scorebar{grid-template-columns:1fr;gap:6px}
  .vs-dot{display:none}
  .practice-hud,.badges{gap:6px}
  .side-panel{grid-template-columns:1fr;}
  .leave-btn{width:100%}
}


/* Practice reveal: keep the next button always visible */
.practice-reveal-wrap{width:min(100%,980px);margin:14px auto 0;display:grid;gap:10px}
.practice-reveal-box{margin-top:0}
.next-practice-btn{width:100%}
.practice-options,.practice-answer-form{width:min(100%,980px);margin-left:auto;margin-right:auto}

@media (max-width:700px){
  .practice-screen .topbar{gap:6px;padding:8px}
  .practice-screen .brand-mini{display:none}
  .practice-screen .practice-hud{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;gap:6px}
  .practice-screen .practice-hud .chip{justify-content:center;min-width:0;white-space:nowrap;font-size:.68rem;padding:6px 5px}
  .practice-screen .game-layout{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr);height:100%;min-height:0;padding:7px}
  .practice-screen .side-panel{display:none}
  .practice-screen .question-card{height:100%;min-height:0;padding:10px;display:flex;flex-direction:column}
  .practice-screen .question-meta{gap:6px;margin-bottom:6px}
  .practice-screen .question-meta .chip{font-size:.68rem;padding:6px 7px}
  .practice-screen .timer-wrap{margin-bottom:7px;gap:5px}
  .practice-screen .timer-line{height:8px}
  .practice-screen .timer-text{font-size:.74rem}
  .practice-screen .timer-text span{max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .practice-screen .image-box{min-height:0;margin-bottom:7px}
  .practice-screen .image-box img{height:86px}
  .practice-screen .image-credit{display:none}
  .practice-screen .question-title{font-size:clamp(1rem,5.3vw,1.34rem);line-height:1.05;margin:0 0 7px;text-align:left}
  .practice-screen .main-stage.no-image .question-title{font-size:clamp(1.08rem,6vw,1.48rem);text-align:left;margin-top:0;margin-bottom:8px}
  .practice-screen .main-stage.no-image::after{font-size:82px;top:46%;opacity:.55}
  .practice-options{grid-template-columns:1fr;gap:6px;margin-top:auto}
  .practice-options .option-btn{min-height:43px;padding:9px 10px 9px 38px;border-radius:14px;font-size:.86rem;line-height:1.12}
  .practice-options .option-btn .letter{left:9px;width:21px;height:21px;font-size:.7rem}
  .practice-answer-form{grid-template-columns:1fr;gap:7px;margin-top:auto}
  .practice-answer-form .input{min-height:44px;font-size:.92rem}
  .practice-reveal-wrap{margin-top:auto;gap:7px}
  .practice-reveal-box{padding:9px;border-radius:15px;max-height:126px;overflow:hidden}
  .practice-reveal-box h3{margin-bottom:5px}
  .practice-reveal-box p{font-size:.84rem;line-height:1.25}
  .practice-reveal-box .explanation{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:5px!important}
  .next-practice-btn{min-height:46px;border-radius:15px;font-size:.92rem}
  .reveal-screen .question-title{font-size:clamp(.96rem,4.9vw,1.22rem);line-height:1.05;margin-bottom:6px}
}

@media (max-width:700px) and (max-height:720px){
  .practice-screen .topbar{padding:6px}
  .practice-screen .practice-hud .chip{font-size:.64rem;padding:5px 4px}
  .practice-screen .game-layout{padding:6px}
  .practice-screen .question-card{padding:8px}
  .practice-screen .question-meta{margin-bottom:5px}
  .practice-screen .question-meta .chip{font-size:.64rem;padding:5px 6px}
  .practice-screen .timer-wrap{margin-bottom:5px}
  .practice-screen .timer-text{font-size:.7rem}
  .practice-screen .question-title{font-size:clamp(.92rem,5vw,1.16rem);margin-bottom:5px}
  .practice-screen .main-stage.no-image .question-title{font-size:clamp(1rem,5.6vw,1.28rem);margin-bottom:6px}
  .practice-options{gap:5px}
  .practice-options .option-btn{min-height:38px;padding-top:7px;padding-bottom:7px;font-size:.8rem}
  .practice-screen .image-box img{height:70px}
  .practice-reveal-box{max-height:98px;padding:8px}
  .next-practice-btn{min-height:42px}
}


/* Arcade answer buttons + centered question */
.main-stage .question-meta{justify-content:center}
.main-stage .question-title{text-align:center;width:min(100%,920px);max-width:920px;margin-left:auto;margin-right:auto}
.main-stage.with-image .question-title,.main-stage.no-image .question-title{text-align:center}
.main-stage .timer-wrap{width:min(100%,760px);margin-left:auto;margin-right:auto}
.options{gap:12px;margin-top:18px}
.option-btn{
  min-height:78px;
  padding:18px 18px 18px 62px;
  border-radius:22px;
  font-size:1.02rem;
  line-height:1.18;
  background:linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.06));
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 14px 26px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.08);
}
.option-btn::before{content:"";position:absolute;left:0;right:0;top:0;height:50%;background:linear-gradient(180deg, rgba(255,255,255,.08), transparent);pointer-events:none}
.option-btn:hover{transform:translateY(-2px) scale(1.01);background:linear-gradient(180deg, rgba(255,255,255,.16), rgba(255,255,255,.08));box-shadow:0 18px 32px rgba(0,0,0,.28), 0 0 0 1px rgba(109,247,210,.14)}
.option-btn .letter{left:16px;width:32px;height:32px;border-radius:10px;font-size:.92rem;background:linear-gradient(135deg, rgba(109,247,210,.28), rgba(53,168,255,.18));box-shadow:0 0 0 1px rgba(109,247,210,.15)}
.option-btn.correct{background:linear-gradient(180deg, rgba(103,255,155,.22), rgba(103,255,155,.1));box-shadow:0 16px 30px rgba(35,122,74,.22)}
.option-btn.wrong{background:linear-gradient(180deg, rgba(255,100,139,.2), rgba(255,100,139,.08));box-shadow:0 16px 30px rgba(135,50,75,.2)}

@media (max-width:980px){
  .main-stage .question-title{width:min(100%,100%)}
}

@media (max-width:700px){
  .practice-screen .question-meta,.practice-screen .main-stage.no-image .question-meta{justify-content:center}
  .practice-screen .question-title,.practice-screen .main-stage.no-image .question-title{text-align:center}
  .practice-options{gap:8px}
  .practice-options .option-btn{
    min-height:52px;
    padding:11px 12px 11px 40px;
    border-radius:16px;
    font-size:.94rem;
    line-height:1.14;
  }
  .practice-options .option-btn .letter{left:10px;width:22px;height:22px;font-size:.72rem}
  .question-screen .main-stage.no-image::after{font-size:72px;top:44%;opacity:.45}
}

@media (max-width:700px) and (max-height:720px){
  .practice-options .option-btn{min-height:44px;font-size:.86rem;padding-top:8px;padding-bottom:8px}
  .practice-options{gap:6px}
}