:root{--bg:#f7f5ff;--ink:#201a3a;--muted:#756f8d;--purple:#6c5ce7;--purple2:#8f7cf3;--lime:#b8ef57;--white:#fff;--danger:#ff6b81;--shadow:0 18px 45px rgba(65,45,140,.16)}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;min-height:100%;font-family:Inter,ui-rounded,"SF Pro Rounded",system-ui,sans-serif;background:linear-gradient(160deg,#f9f8ff,#eeeaff);color:var(--ink)}body{min-height:100svh;overflow-x:hidden}.app-shell{width:min(100%,540px);min-height:100svh;margin:auto;position:relative;background:rgba(255,255,255,.32);overflow:hidden}.screen{display:none;min-height:100svh;padding:calc(24px + env(safe-area-inset-top)) 22px calc(22px + env(safe-area-inset-bottom));position:relative}.screen.active{display:flex;animation:screenIn .45s cubic-bezier(.2,.8,.2,1)}@keyframes screenIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.start-screen{flex-direction:column;justify-content:center;align-items:stretch}.blob{position:absolute;border-radius:50%;filter:blur(2px);opacity:.65;pointer-events:none}.blob-a{width:250px;height:250px;background:#d9d1ff;right:-90px;top:-70px}.blob-b{width:180px;height:180px;background:#dfffaa;left:-80px;bottom:70px}.logo-mark{width:82px;height:82px;border-radius:27px;display:grid;place-items:center;background:var(--purple);color:#fff;font-size:42px;font-weight:900;box-shadow:0 18px 35px rgba(108,92,231,.35);transform:rotate(-6deg);animation:float 3.2s ease-in-out infinite}@keyframes float{50%{transform:rotate(4deg) translateY(-8px)}}.eyebrow{margin:28px 0 8px;color:var(--purple);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:12px}.start-screen h1{font-size:64px;line-height:.87;letter-spacing:-.06em;margin:0}.start-screen h1 span{color:var(--purple)}.subtitle{font-size:17px;line-height:1.5;color:var(--muted);max-width:430px;margin:24px 0}.mode-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.mode-chip{border:0;border-radius:999px;padding:11px 17px;background:#fff;color:var(--muted);font-weight:800;box-shadow:0 7px 18px rgba(50,40,100,.07);cursor:pointer}.mode-chip.selected{background:var(--ink);color:#fff;transform:translateY(-2px)}button{font:inherit}.primary-btn{border:0;border-radius:22px;background:linear-gradient(135deg,var(--purple),var(--purple2));color:#fff;min-height:66px;padding:0 24px;font-size:19px;font-weight:900;display:flex;align-items:center;justify-content:space-between;box-shadow:0 16px 30px rgba(108,92,231,.32);cursor:pointer;transition:.18s}.primary-btn:active{transform:translateY(3px) scale(.985);box-shadow:0 8px 18px rgba(108,92,231,.25)}.primary-btn b{font-size:28px}.mini-stats{display:flex;justify-content:space-between;margin-top:18px;color:var(--muted);font-size:13px}.mini-stats b{color:var(--ink)}
.game-screen{flex-direction:column}.topbar{display:flex;align-items:center;gap:12px}.icon-btn{width:44px;height:44px;border:0;border-radius:15px;background:#fff;color:var(--ink);font-size:22px;font-weight:900;box-shadow:0 8px 20px rgba(48,38,100,.08)}.progress{height:12px;flex:1;background:#e5e0f7;border-radius:999px;overflow:hidden}.progress div{height:100%;width:0;background:linear-gradient(90deg,var(--lime),#72dc72);border-radius:inherit;transition:width .5s cubic-bezier(.2,.8,.2,1)}.score-pill{background:#fff;border-radius:14px;padding:10px 12px;font-weight:900;box-shadow:0 8px 20px rgba(48,38,100,.08)}.streak-row{display:flex;justify-content:space-between;margin:22px 2px 10px;font-size:12px;font-weight:900;letter-spacing:.06em;color:var(--muted)}#typeBadge{color:var(--purple)}.question-card{background:#fff;border-radius:30px;padding:24px 22px;text-align:center;box-shadow:var(--shadow);position:relative;overflow:hidden}.question-card:before{content:"";position:absolute;width:90px;height:90px;background:#eeeaff;border-radius:50%;right:-30px;top:-34px}.question-card p{margin:0;color:var(--muted);font-size:14px;font-weight:700}.question-card h2{font-size:clamp(27px,7vw,40px);line-height:1.1;margin:18px 0 16px;letter-spacing:-.03em}.speak-btn{border:0;background:#f0edff;color:var(--purple);border-radius:999px;padding:10px 16px;font-weight:900;cursor:pointer}.speak-btn.speaking{animation:pulse .7s infinite alternate}@keyframes pulse{to{transform:scale(1.08);background:#ded7ff}}.answer-area{min-height:78px;margin:24px 0 15px;padding:12px;border:2px dashed #d8d1f1;border-radius:24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:9px}.answer-token{background:var(--ink);color:#fff;border-radius:14px;padding:12px 14px;font-weight:900;animation:tokenIn .25s cubic-bezier(.2,.9,.3,1.3)}@keyframes tokenIn{from{opacity:0;transform:translateY(12px) scale(.75)}}.placeholder{color:#aaa3bf;font-weight:700}.choices-area{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-content:flex-start;min-height:140px}.choice{border:0;border-bottom:4px solid #d8d1ec;background:#fff;color:var(--ink);border-radius:16px;padding:13px 16px;font-weight:900;font-size:18px;box-shadow:0 8px 16px rgba(50,40,100,.07);cursor:pointer;transition:.16s}.choice:hover{transform:translateY(-2px)}.choice:active{transform:translateY(2px);border-bottom-width:1px}.choice.used{opacity:0;pointer-events:none;transform:scale(.6)}.choice.hint{animation:hint 1s infinite}@keyframes hint{50%{transform:translateY(-7px);box-shadow:0 0 0 6px rgba(184,239,87,.35)}}.feedback{text-align:center;min-height:24px;font-weight:900;margin:10px 0}.feedback.good{color:#27935b}.feedback.bad{color:var(--danger);animation:shake .35s}@keyframes shake{25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}.actions{display:flex;gap:10px;margin-top:auto}.secondary-btn{flex:1;min-height:52px;border:0;border-radius:17px;background:#fff;color:var(--ink);font-weight:900;box-shadow:0 8px 18px rgba(50,40,100,.08)}.secondary-btn.help{background:#fff9d8}.next-btn{margin-top:12px}.hidden{display:none!important}.correct-card{animation:correct .55s cubic-bezier(.2,.9,.2,1)}@keyframes correct{35%{transform:scale(1.025);box-shadow:0 0 0 8px rgba(184,239,87,.35)}100%{transform:none}}.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden}.confetti i{position:absolute;top:-12px;width:10px;height:16px;border-radius:3px;animation:fall 1.1s linear forwards}@keyframes fall{to{transform:translateY(110vh) rotate(700deg);opacity:.4}}@media(max-height:700px){.question-card{padding:18px}.question-card h2{margin:11px 0}.answer-area{margin:14px 0;min-height:62px}.choices-area{min-height:105px}.start-screen h1{font-size:52px}.subtitle{margin:16px 0}}

.explanation{margin:4px 0 12px;padding:14px 16px;border-radius:18px;background:#fff;box-shadow:0 8px 18px rgba(50,40,100,.08);text-align:center;animation:tokenIn .25s cubic-bezier(.2,.9,.3,1.2)}
.explanation strong{display:block;color:var(--ink);font-size:17px;line-height:1.35}
.explanation small{display:block;margin-top:5px;color:var(--muted);font-size:12px;line-height:1.35}
.odd-choice{min-width:calc(50% - 8px);min-height:60px;font-size:20px}
.odd-choice.correct-choice{background:#e9ffd0;border-bottom-color:#79c944;color:#256b39;transform:translateY(-2px)}
.odd-choice.wrong-choice{background:#fff0f3;border-bottom-color:var(--danger);color:#b8324b;animation:shake .35s}
.odd-choice.dimmed-choice{opacity:.48}
.choice:disabled{cursor:default}
@media(max-width:380px){.odd-choice{min-width:100%}}

.choices-area{min-height:0;margin-top:18px;}
.game-screen.odd-mode .feedback{margin:10px 0 0}
.game-screen.odd-mode .actions{margin-top:auto;}
.game-screen.odd-mode .next-btn{margin-top:12px}