:root{--ink:#123763;--blue:#74b4fb;--violet:#6737e8;--cyan:#1298b5;--yellow:#ffd84d;--good:#16a56b;--bad:#d93b53;--shadow:0 7px 0 rgba(35,98,172,.14),0 12px 18px rgba(18,55,99,.10)}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:"Segoe UI",Tahoma,Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at 0 100%,rgba(255,255,255,.35) 0 12%,transparent 12.5%),radial-gradient(circle at 94% 96%,rgba(255,255,255,.28) 0 10%,transparent 10.5%),linear-gradient(180deg,#66aaf7,#7abaff 48%,#8ec8ff)}button,a{font:inherit}.challenge-sky{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:42px 42px}.challenge-topbar{width:min(1180px,calc(100% - 28px));margin:16px auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border:2px solid rgba(255,255,255,.7);border-radius:24px;background:rgba(255,255,255,.82);box-shadow:var(--shadow);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:1000;text-decoration:none}.brand img{width:54px;height:54px;object-fit:contain}.top-actions,.hero-actions,.answer-actions{display:flex;gap:10px;flex-wrap:wrap}.home-link,.google-login-btn,.primary,.secondary{border:0;border-radius:18px;min-height:50px;padding:12px 18px;text-decoration:none;font-weight:1000;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.home-link,.secondary,.google-login-btn{background:#fff;color:#071d3b;box-shadow:0 4px 0 rgba(35,98,172,.12)}.primary{background:linear-gradient(135deg,#7144ee,#368df6);color:#fff;box-shadow:0 7px 0 #3c2aaa}.secondary:disabled{opacity:.55;cursor:not-allowed}.challenge-app{width:min(1180px,calc(100% - 28px));margin:0 auto 40px}.hero,.auth-gate,.locked-panel,.play-panel,.report-panel,.leaderboard{border:2px solid rgba(255,255,255,.72);border-radius:30px;background:linear-gradient(135deg,rgba(202,244,255,.96),rgba(219,207,255,.94) 52%,rgba(255,232,189,.94));box-shadow:var(--shadow);padding:clamp(18px,4vw,42px);margin:22px 0}.hero{display:grid;grid-template-columns:1.1fr .8fr;align-items:center;overflow:hidden}.eyebrow{display:inline-block;padding:8px 14px;border-radius:999px;background:#fff;font-weight:1000}.hero h1{font-size:clamp(2.3rem,6vw,4.4rem);line-height:1.05;margin:16px 0}.hero p{font-size:1.2rem;font-weight:850;line-height:1.8}.hero-cover{width:min(390px,100%);justify-self:center;filter:drop-shadow(0 24px 22px rgba(18,55,99,.24))}.auth-gate,.locked-panel{text-align:center}.play-panel{display:grid;grid-template-columns:270px 1fr;gap:18px}.score-card,.question-card{background:rgba(255,255,255,.9);border:2px solid rgba(255,255,255,.76);border-radius:24px;box-shadow:0 5px 0 rgba(35,98,172,.12);padding:22px}.score-card{display:grid;gap:12px;align-content:start}.score-card span,.score-card small{font-weight:900}.score-card strong{font-size:2.2rem}.progress{height:12px;border-radius:999px;background:#dbeeff;overflow:hidden}.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,#7144ee,#27c7ca,#ffd858);transition:.25s}.question-card{display:grid;gap:16px;text-align:center}.word-emoji{font-size:4rem}.word-text{font-size:clamp(2.3rem,6vw,4rem);font-weight:1000;direction:ltr;unicode-bidi:isolate;color:#071d3b}.word-meta{font-weight:900;color:#386494}.answer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.answer-grid button{min-height:64px;border:2px solid #b8d7f5;border-radius:18px;background:#fff;color:#123763;font-weight:1000;box-shadow:0 5px 0 #8fc2ee;cursor:pointer;padding:12px}.answer-grid button.is-correct{background:#d9f9e8;border-color:var(--good);color:#0c6845}.answer-grid button.is-wrong{background:#ffe0e5;border-color:var(--bad);color:#8b2136}.write-answer{display:grid;gap:10px}.write-answer input{direction:ltr;text-align:left;min-height:62px;border:3px solid #a8d5f8;border-radius:18px;padding:12px 16px;font:900 1.25rem/1.3 inherit;color:#102f55}.feedback{min-height:40px;border-radius:16px;padding:12px;font-weight:1000}.feedback.good{background:#d9f9e8;color:#0c6845}.feedback.bad{background:#ffe0e5;color:#8b2136}.report-head{display:grid;gap:6px;text-align:center}.report-head strong{font-size:3rem}.report-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}.report-item{background:#fff;border-radius:18px;padding:14px;border:2px solid rgba(255,255,255,.8)}.report-item b{direction:ltr;unicode-bidi:isolate}.leaderboard ol{display:grid;gap:10px;margin:0;padding:0;list-style:none}.leaderboard li{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;background:#fff;border-radius:16px;padding:12px 14px;font-weight:1000;box-shadow:0 4px 0 rgba(35,98,172,.1)}@media(max-width:800px){.hero,.play-panel{grid-template-columns:1fr}.hero-cover{max-width:280px}.answer-grid,.report-grid{grid-template-columns:1fr}.challenge-topbar{align-items:flex-start}.brand span{display:none}}
.answer-grid button.is-selected{background:#e7cfff;border-color:var(--violet);transform:translateY(-2px)}