@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap";*{box-sizing:border-box;margin:0;padding:0}body{color:#2d3748;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;font-family:Nunito,system-ui,sans-serif}#root{width:100%;max-width:100%;min-height:100vh}.login-screen{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-container{background:#fffffff2;border-radius:24px;width:100%;max-width:600px;padding:40px;box-shadow:0 20px 60px #0000004d}.login-header{text-align:center;margin-bottom:32px}.game-title{background:linear-gradient(135deg,#667eea,#f6ad55);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:2.8rem;font-weight:900}.game-subtitle{color:#718096;font-size:1.1rem;font-weight:600}.section-heading{color:#4a5568;text-align:center;margin-bottom:16px;font-size:1.3rem;font-weight:800}.profiles-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin-bottom:24px;display:grid}.profile-card{cursor:pointer;background:#fff;border:2px solid #e2e8f0;border-radius:16px;flex-direction:column;align-items:center;gap:8px;padding:20px 16px;font-family:inherit;transition:all .2s;display:flex}.profile-card:hover{border-color:#667eea;transform:translateY(-3px);box-shadow:0 8px 24px #667eea4d}.profile-avatar{color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;font-size:1.8rem;font-weight:900;display:flex}.profile-name{color:#2d3748;font-size:1rem;font-weight:800}.profile-grade{color:#718096;font-size:.8rem;font-weight:600}.profile-score{color:#f6ad55;font-size:.85rem;font-weight:700}.new-player-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#48bb78,#38a169);border:none;border-radius:16px;width:100%;margin-bottom:16px;padding:16px;font-family:inherit;font-size:1.1rem;font-weight:800;transition:all .2s;display:block}.new-player-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #48bb7866}.new-player-form{background:#f7fafc;border-radius:16px;margin-bottom:16px;padding:24px}.name-input,.answer-input{color:#2d3748;border:2px solid #e2e8f0;border-radius:12px;width:100%;margin-bottom:12px;padding:14px 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.2s}.parent-link:hover{color:#718096}.debug-menu-overlay{z-index:1000;background:#00000073;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.debug-menu-modal{background:#fff;border:4px solid #2d3748;border-radius:20px;width:min(520px,100%);padding:24px;box-shadow:0 20px 50px #00000059}.debug-menu-title{color:#2d3748;font-size:1.4rem;font-weight:900}.debug-menu-subtitle{color:#4a5568;margin-top:4px;font-weight:600}.debug-menu-options{gap:10px;margin-top:16px;display:grid}.debug-menu-option{color:#2d3748;cursor:pointer;background:#f7fafc;border:2px solid #cbd5e0;border-radius:12px;width:100%;padding:12px 14px;font-family:inherit;font-size:1rem;font-weight:800;transition:all .15s}.debug-menu-option:hover{border-color:#2b6cb0;transform:translateY(-1px)}.debug-menu-close{color:#4a5568;cursor:pointer;background:#e2e8f0;border:none;border-radius:12px;width:100%;margin-top:14px;padding:10px;font-family:inherit;font-weight:700}.streak-bonus-screen{justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.streak-bonus-banner{color:#e53e3e;letter-spacing:.06em;text-transform:uppercase;text-align:center;background:#ffd400;border:8px solid #e53e3e;border-radius:24px;padding:24px 36px;font-size:clamp(2rem,5vw,4rem);font-weight:900;box-shadow:0 12px 30px #0000004d}.quiz-screen{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);flex-direction:column;min-height:100vh;display:flex}.quiz-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0003;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.quiz-player-info{align-items:center;gap:10px;display:flex}.player-name{color:#fff;font-size:1.1rem;font-weight:800}.grade-badge{color:#fff;background:#fff3;border-radius:20px;padding:4px 12px;font-size:.85rem;font-weight:700}.score-badge{color:#744210;background:#f6ad55;border-radius:24px;padding:8px 20px;font-size:1.1rem;font-weight:900;box-shadow:0 4px 12px #f6ad5566}.quiz-content{flex:1;justify-content:center;align-items:center;padding:24px;display:flex}.question-card{background:#fff;border-radius:24px;width:100%;max-width:680px;padding:32px;transition:box-shadow .3s;box-shadow:0 20px 60px #0003}.question-card.correct{box-shadow:0 0 0 4px #48bb78,0 20px 60px #0003}.question-card.wrong{box-shadow:0 0 0 4px #fc8181,0 20px 60px #0003}.question-meta{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.topic-tag{color:#3182ce;text-transform:capitalize;background:#ebf4ff;border-radius:20px;padding:4px 12px;font-size:.8rem;font-weight:700}.points-badge{color:#805ad5;background:#faf5ff;border-radius:20px;padding:4px 12px;font-size:.8rem;font-weight:700}.question-prompt{color:#2d3748;margin-bottom:24px;font-size:1.4rem;font-weight:700;line-height:1.5}.choices-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.choice-btn{color:#2d3748;cursor:pointer;text-align:center;background:#f7fafc;border:2px solid #e2e8f0;border-radius:14px;padding:16px;font-family:inherit;font-size:1rem;font-weight:700;transition:all .15s}.choice-btn:hover{background:#ebf4ff;border-color:#667eea;transform:translateY(-2px)}.choice-btn.selected{background:#ebf4ff;border-color:#667eea}.input-area{gap:12px;display:flex}.answer-input{flex:1;margin-bottom:0}.submit-btn{color:#fff;cursor:pointer;white-space:nowrap;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;padding:14px 24px;font-family:inherit;font-size:1rem;font-weight:800;transition:all .2s}.submit-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px #667eea66}.feedback-banner{border-radius:16px;align-items:center;gap:16px;margin-top:20px;padding:16px 20px;display:flex}.feedback-correct{background:#f0fff4;border:2px solid #48bb78}.feedback-wrong{background:#fff5f5;border:2px solid #fc8181}.feedback-icon{font-size:2rem}.feedback-text{flex:1}.feedback-text strong{margin-bottom:4px;font-size:1.1rem;display:block}.explanation{color:#718096;margin-top:4px;font-size:.9rem}.points-delta{font-size:1.4rem;font-weight:900}.points-delta.positive{color:#48bb78}.points-delta.negative{color:#fc8181}.level-up-screen{background:linear-gradient(135deg,#ffecd2 0%,#fcb69f 100%);justify-content:center;align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}.level-up-content{z-index:1;text-align:center;position:relative}.level-up-card{background:#fff;border-radius:32px;padding:48px 56px;animation:.5s cubic-bezier(.34,1.56,.64,1) levelUpPop;box-shadow:0 30px 80px #0003}@keyframes levelUpPop{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.level-up-emoji{margin-bottom:16px;font-size:5rem;animation:.6s infinite alternate bounce}@keyframes bounce{0%{transform:translateY(0)}to{transform:translateY(-12px)}}.level-up-title{background:linear-gradient(135deg,#667eea,#f6ad55);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:12px;font-size:3rem;font-weight:900}.level-up-subtitle{color:#718096;margin-bottom:8px;font-size:1.2rem}.level-up-grade{color:#667eea;margin-bottom:16px;font-size:2.5rem;font-weight:900}.level-up-hint{color:#a0aec0;font-size:1rem}.stars-row{margin-top:16px;font-size:2rem;animation:2s linear infinite spin}@keyframes spin{0%{letter-spacing:8px}to{letter-spacing:16px}}.confetti-container{pointer-events:none;position:fixed;inset:0;overflow:hidden}.confetti{border-radius:2px;width:10px;height:10px;animation:2s linear infinite confettiFall;position:absolute;top:-20px}.confetti-0{background:#f6ad55;animation-delay:0s}.confetti-1{background:#667eea;animation-delay:.2s}.confetti-2{background:#48bb78;animation-delay:.4s}.confetti-3{background:#fc8181;animation-delay:.6s}.confetti-4{background:#b794f4;animation-delay:.8s}.confetti-5{background:#76e4f7;animation-delay:1s}@keyframes confettiFall{0%{top:-20px;transform:rotate(0)translate(0)}to{top:110vh;transform:rotate(720deg)translate(60px)}}.minigame-shell{background:#1a202c;flex-direction:column;align-items:center;min-height:100vh;display:flex}.minigame-header{background:#ffffff0d;justify-content:space-between;align-items:center;width:100%;padding:12px 24px;display:flex}.minigame-title{color:#fff;font-size:1.2rem;font-weight:800}.timer-badge{color:#fff;background:#48bb78;border-radius:24px;padding:8px 20px;font-size:1.1rem;font-weight:900;transition:background .3s}.timer-urgent{background:#fc8181;animation:.5s infinite alternate timerPulse}@keyframes timerPulse{0%{transform:scale(1)}to{transform:scale(1.1)}}.minigame-canvas-area{flex:1;justify-content:center;align-items:center;width:100%;padding:16px;display:flex}.minigame-start-overlay{z-index:10;background:#0000008c;border-radius:8px;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.minigame-start-card{text-align:center;background:#fff;border-radius:20px;max-width:380px;padding:36px 44px;box-shadow:0 20px 60px #0006}.minigame-start-title{color:#553c9a;margin-bottom:12px;font-size:2rem;font-weight:800}.minigame-start-instructions{color:#4a5568;margin-bottom:8px;font-size:1rem;line-height:1.5}.minigame-start-goal{color:#718096;margin-bottom:24px;font-size:.9rem}.minigame-start-btn{padding:14px 48px;font-size:1.25rem}.result-screen{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.result-card{text-align:center;background:#fff;border-radius:32px;width:100%;max-width:440px;padding:48px 40px;box-shadow:0 24px 60px #0000004d}.result-success{border:4px solid #48bb78}.result-fail{border:4px solid #fc8181}.result-timeout{border:4px solid #f6ad55}.result-emoji{margin-bottom:16px;font-size:5rem}.result-title{margin-bottom:8px;font-size:2rem;font-weight:900}.result-success .result-title{color:#48bb78}.result-fail .result-title{color:#fc8181}.result-timeout .result-title{color:#f6ad55}.result-game-name{color:#718096;margin-bottom:24px;font-size:1.1rem;font-weight:600}.result-bonus{background:#faf5ff;border-radius:16px;justify-content:space-between;align-items:center;margin-bottom:24px;padding:16px 24px;font-weight:700;display:flex}.bonus-points{color:#667eea;font-size:1.8rem;font-weight:900}.continue-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:16px;width:100%;padding:16px;font-family:inherit;font-size:1.1rem;font-weight:800;transition:all .2s}.continue-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.pin-screen{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.pin-container{text-align:center;background:#fff;border-radius:24px;width:100%;max-width:400px;padding:40px;box-shadow:0 20px 60px #0000004d}.pin-title{color:#2d3748;margin:16px 0 8px;font-size:2rem;font-weight:900}.pin-subtitle{color:#718096;margin-bottom:32px;font-weight:600}.pin-inputs{justify-content:center;gap:16px;margin-bottom:20px;transition:transform .1s;display:flex}.pin-inputs.shake{animation:.5s shake}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-10px)}40%{transform:translate(10px)}60%{transform:translate(-10px)}80%{transform:translate(10px)}}.pin-digit-input{text-align:center;color:#2d3748;border:2px solid #e2e8f0;border-radius:12px;width:60px;height:70px;font-family:inherit;font-size:2rem;font-weight:900;transition:border-color .2s}.pin-digit-input:focus{border-color:#667eea;outline:none;box-shadow:0 0 0 3px #667eea33}.pin-error{color:#fc8181;margin-bottom:16px;font-weight:700}.pin-submit-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;width:100%;margin-bottom:12px;padding:14px;font-family:inherit;font-size:1.1rem;font-weight:800;transition:all .2s}.pin-submit-btn:disabled{opacity:.5;cursor:not-allowed}.pin-submit-btn:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 6px 16px #667eea66}.pin-hint{color:#a0aec0;font-size:.85rem}.parent-hub{background:#f7fafc;flex-direction:column;min-height:100vh;display:flex}.parent-hub-header{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:space-between;align-items:center;padding:20px 32px;display:flex}.hub-title{color:#fff;font-size:1.8rem;font-weight:900}.hub-content{flex:1;width:100%;max-width:800px;margin:0 auto;padding:32px}.hub-players-grid{flex-direction:column;gap:16px;display:flex}.hub-player-card{cursor:pointer;text-align:left;background:#fff;border:2px solid #e2e8f0;border-radius:16px;align-items:center;gap:16px;width:100%;padding:20px 24px;font-family:inherit;transition:all .2s;display:flex}.hub-player-card:hover{border-color:#667eea;transform:translate(4px);box-shadow:0 4px 16px #667eea33}.hub-avatar{color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.5rem;font-weight:900;display:flex}.hub-player-info{flex-direction:column;flex:1;gap:4px;display:flex}.hub-player-name{color:#2d3748;font-size:1.1rem;font-weight:800}.hub-player-grade{color:#718096;font-size:.85rem;font-weight:600}.hub-player-score{color:#f6ad55;font-size:.9rem;font-weight:700}.hub-arrow{color:#a0aec0;font-size:1.2rem}.player-detail{width:100%;max-width:900px;margin:0 auto;padding:24px 32px}.detail-header{background:#fff;border-radius:20px;align-items:center;gap:20px;margin:16px 0 24px;padding:24px;display:flex;box-shadow:0 2px 12px #00000014}.detail-avatar{color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;font-size:2rem;font-weight:900;display:flex}.detail-name{color:#2d3748;font-size:1.5rem;font-weight:900}.detail-grade{color:#718096;font-size:.9rem;font-weight:600;display:block}.detail-score{color:#f6ad55;margin-left:auto;font-size:1.3rem;font-weight:900}.stats-row{flex-wrap:wrap;gap:16px;margin-bottom:24px;display:flex}.stat-card{text-align:center;background:#fff;border-radius:16px;flex:1;min-width:100px;padding:20px;box-shadow:0 2px 12px #00000014}.stat-value{color:#667eea;font-size:2rem;font-weight:900}.stat-label{color:#718096;margin-top:4px;font-size:.8rem;font-weight:600}.section-box{background:#fff;border-radius:16px;margin-bottom:20px;padding:24px;box-shadow:0 2px 12px #00000014}.section-title{color:#4a5568;margin-bottom:16px;font-size:1.1rem;font-weight:800}.stats-table{border-collapse:collapse;width:100%;font-size:.9rem}.stats-table th{text-align:left;color:#718096;background:#f7fafc;border-bottom:2px solid #e2e8f0;padding:8px 12px;font-weight:700}.stats-table td{color:#4a5568;border-bottom:1px solid #f0f4f8;padding:10px 12px;font-weight:600}.stats-table tr:last-child td{border-bottom:none}.accuracy-badge{border-radius:12px;padding:2px 10px;font-weight:700}.accuracy-badge.good{color:#276749;background:#f0fff4}.accuracy-badge.ok{color:#744210;background:#fefcbf}.accuracy-badge.poor{color:#c53030;background:#fff5f5}.question-id-cell{color:#718096;font-family:monospace;font-size:.8rem}.change-pin-btn{cursor:pointer;color:#4a5568;background:#f7fafc;border:2px solid #e2e8f0;border-radius:12px;padding:12px 24px;font-family:inherit;font-size:.95rem;font-weight:700;transition:all .2s}.change-pin-btn:hover{color:#667eea;border-color:#667eea}.pin-text-input{text-align:center;letter-spacing:8px;border:2px solid #e2e8f0;border-radius:12px;width:120px;margin-bottom:12px;padding:12px 16px;font-family:inherit;font-size:1.2rem;font-weight:700}.pin-text-input:focus{border-color:#667eea;outline:none}.pin-success{color:#48bb78;margin-bottom:8px;font-weight:700}.change-pin-form{flex-direction:column;align-items:flex-start;gap:4px;display:flex}.back-btn{color:#fff;cursor:pointer;background:#fff3;border:none;border-radius:8px;padding:8px 16px;font-family:inherit;font-size:.9rem;font-weight:700;transition:background .2s}.back-btn:hover{background:#ffffff4d}.player-detail .back-btn{color:#4a5568;background:#e2e8f0;margin-bottom:8px}.player-detail .back-btn:hover{background:#cbd5e0}.loading-card{color:#4a5568;text-align:center;background:#ffffffe6;border-radius:16px;padding:40px;font-size:1.1rem;font-weight:700}.empty-state{text-align:center;color:#a0aec0;padding:48px;font-size:1.1rem;font-weight:600}@media (width<=640px){.login-container{padding:24px}.question-card{padding:20px}.question-prompt{font-size:1.1rem}.choices-grid{grid-template-columns:1fr}.stats-row{flex-direction:column}.detail-header{flex-wrap:wrap}.hub-content,.player-detail{padding:16px}}