:root{--bg: #ecfdf5;--bg-card: #ffffff;--text: #1e293b;--text-muted: #64748b;--primary: #22c55e;--primary-dark: #16a34a;--secondary: #3b82f6;--danger: #ef4444;--warning: #f59e0b;--success: #10b981;--border: #d1fae5;--shadow: 0 8px 24px rgba(15, 23, 42, .08);--radius: 20px;--radius-sm: 12px;--font: "Segoe UI", system-ui, -apple-system, sans-serif}*,*:before,*:after{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:var(--font);font-size:18px;line-height:1.5;color:var(--text);background:radial-gradient(circle at top,#bbf7d0 0%,transparent 45%),linear-gradient(180deg,#ecfdf5,#dbeafe);-webkit-font-smoothing:antialiased}button,input{font:inherit}.screen{max-width:520px;margin:0 auto;padding:1.25rem 1rem 2rem;animation:fadeIn .35s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.screen-header{text-align:center;margin-bottom:1.5rem}.logo,.result-emoji{font-size:3.5rem;line-height:1;margin-bottom:.5rem}h1{margin:0 0 .35rem;font-size:clamp(1.6rem,5vw,2rem)}.subtitle{margin:0;color:var(--text-muted);font-size:1rem}.card{background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius);padding:1.1rem;box-shadow:var(--shadow);margin-bottom:1rem}.field-label{display:block;font-weight:700;margin-bottom:.5rem}.text-input{width:100%;padding:.9rem 1rem;border:2px solid #cbd5e1;border-radius:var(--radius-sm);font-size:1.1rem;background:#fff}.text-input:focus{outline:3px solid #86efac;border-color:var(--primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-height:52px;padding:.85rem 1.2rem;border:none;border-radius:var(--radius-sm);font-weight:700;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:linear-gradient(180deg,#4ade80,var(--primary));color:#052e16;box-shadow:0 4px 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.gem-badge__icon{width:44px;height:44px;font-size:1.4rem}.gem-badge__info{display:flex;flex-direction:column;gap:.15rem;min-width:0}.gem-badge__level{font-size:.85rem;color:var(--text-muted);font-weight:600}.gem-badge__name{font-size:1.2rem;font-weight:800}.gem-badge__points{color:var(--text-muted);font-size:.95rem}.gem-badge__progress{margin-top:.35rem}.gem-badge__progress-track{height:8px;background:#e2e8f0;border-radius:999px;overflow:hidden}.gem-badge__progress-fill{height:100%;border-radius:999px;transition:width .4s ease}.gem-badge__progress-label{font-size:.8rem;color:var(--text-muted)}.game-header{display:flex;align-items:stretch;gap:.75rem;margin-bottom:1rem}.round-info{display:flex;flex-direction:column;justify-content:center;align-items:flex-end;font-weight:700;font-size:.95rem;color:var(--text-muted)}.retry-badge{color:var(--warning);font-size:.85rem}.timer-bar{margin-bottom:1rem}.timer-bar__track{height:14px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin-bottom:.35rem}.timer-bar__fill{height:100%;background:linear-gradient(90deg,#4ade80,#22c55e);border-radius:999px;transition:width 1s linear}.timer-bar__fill--low{background:linear-gradient(90deg,#fca5a5,var(--danger))}.timer-bar__label{font-weight:700;font-size:.95rem}.timer-bar__label--low{color:var(--danger)}.question-card{background:var(--bg-card);border:3px solid #86efac;border-radius:var(--radius);padding:1.5rem 1rem;text-align:center;margin-bottom:1.25rem;box-shadow:var(--shadow)}.question-type{margin:0 0 .5rem;color:var(--text-muted);font-weight:600}.question-text{margin:0;font-size:clamp(2rem,8vw,2.8rem);font-weight:800;letter-spacing:.02em}.answers-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem}.answer-btn{min-height:72px;border:3px solid #cbd5e1;border-radius:var(--radius-sm);background:#fff;font-size:1.6rem;font-weight:800;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:transform .15s ease,border-color .15s ease,background .15s ease}.answer-btn:focus{outline:none}.answer-btn:focus-visible{outline:3px solid var(--secondary);outline-offset:2px}.answer-btn:hover:not(:disabled){border-color:var(--secondary);background:#eff6ff;transform:translateY(-2px)}.answer-btn:disabled{cursor:default}.answer-btn--correct{border-color:var(--success);background:#d1fae5;animation:pulseCorrect .5s ease}.answer-btn--wrong{border-color:var(--danger);background:#fee2e2;animation:shake .45s ease}@keyframes pulseCorrect{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.feedback-banner{margin-top:1rem;padding:1rem;border-radius:var(--radius-sm);text-align:center;font-weight:700;animation:fadeIn .3s ease}.feedback-banner--correct{background:#dcfce7;color:#14532d}.feedback-banner--wrong,.feedback-banner--timeout{background:#fee2e2;color:#991b1b}.game-screen.feedback-correct{animation:flashGreen .4s ease}.game-screen.feedback-wrong,.game-screen.feedback-timeout{animation:flashRed .4s ease}@keyframes flashGreen{0%{background:#22c55e26}to{background:transparent}}@keyframes flashRed{0%{background:#ef44441f}to{background:transparent}}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;margin-bottom:1rem}.stat-card{background:var(--bg-card);border-radius:var(--radius-sm);padding:1rem;text-align:center;border:2px solid var(--border);box-shadow:var(--shadow)}.stat-value{display:block;font-size:1.8rem;font-weight:800}.stat-label{font-size:.9rem;color:var(--text-muted)}.gems-earned h2{margin:0 0 .75rem;font-size:1.1rem}.gems-earned__list{display:flex;flex-wrap:wrap;gap:.5rem}.gem-earned-item{display:inline-flex;align-items:center;gap:.35rem;background:#f0fdf4;border:2px solid #bbf7d0;border-radius:999px;padding:.4rem .75rem;font-weight:700}.gem-earned-item__emoji{font-size:1.2rem}.highscore-list{list-style:none;margin:0 0 1.25rem;padding:0;display:grid;gap:.65rem}.highscore-item{display:grid;grid-template-columns:auto 1fr auto;gap:.75rem;align-items:center;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-sm);padding:.85rem;box-shadow:var(--shadow)}.highscore-item.rank-1{border-color:#fde047;background:#fefce8}.highscore-item.rank-2{border-color:#cbd5e1;background:#f8fafc}.highscore-item.rank-3{border-color:#fdba74;background:#fff7ed}.highscore-rank{font-size:1.4rem;font-weight:800;min-width:2rem;text-align:center}.highscore-details{display:flex;flex-direction:column;gap:.1rem;min-width:0}.highscore-name{font-weight:800}.highscore-meta,.highscore-stats{font-size:.82rem;color:var(--text-muted)}.highscore-points{font-weight:800;color:var(--primary-dark);white-space:nowrap}.empty-state{text-align:center}@media(min-width:480px){.option-grid--timer{grid-template-columns:repeat(3,1fr)}}@media(min-width:600px){.screen{padding-top:2rem}.answers-grid{gap:1rem}.answer-btn{min-height:80px;font-size:1.8rem}}