.welcome-screen{background:linear-gradient(135deg,#667eea,#764ba2);justify-content:flex-start;padding-top:5vh}.welcome-content{text-align:center;padding:1rem 1.5rem;width:100%;max-width:600px;margin:0 auto}.game-title{font-size:3rem;color:#fff;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.2);animation:bounce 1s ease-in-out}.subtitle{font-size:1.5rem;color:#fff;margin-bottom:1.5rem;font-weight:500}.player-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:1rem}.player-button{background:#fff;border:none;border-radius:20px;padding:2rem 1rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a;display:flex;flex-direction:column;align-items:center;gap:.5rem;min-height:120px}.player-button:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 8px 12px #0003;background:#f0f7ff}.player-button:active{transform:translateY(-2px) scale(1.02)}.player-count{font-size:2.5rem;font-weight:700;color:#667eea}.player-label{font-size:.9rem;color:#666;font-weight:500}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@media(max-width:600px){.welcome-screen{padding-top:3vh}.welcome-content{padding:.75rem 1rem}.game-title{font-size:2.5rem;margin-bottom:.5rem}.subtitle{font-size:1.3rem;margin-bottom:1.25rem}.player-grid{grid-template-columns:repeat(4,1fr);gap:.6rem;margin-top:.75rem}.player-button{padding:1.25rem .4rem;min-height:90px;border-radius:16px}.player-count{font-size:2.2rem}.player-label{font-size:.8rem}}@media(min-height:800px)and (max-width:600px){.welcome-screen{padding-top:8vh}.game-title{font-size:3rem;margin-bottom:1rem}.subtitle{font-size:1.5rem;margin-bottom:2rem}.player-grid{gap:1rem;margin-top:2rem}.player-button{padding:1.75rem .75rem;min-height:110px}.player-count{font-size:2.5rem}.player-label{font-size:.9rem}}.customization-screen{background:linear-gradient(135deg,#667eea,#764ba2);justify-content:flex-start;padding-top:5vh}.customization-content{text-align:center;padding:1rem 1.5rem;width:100%;max-width:600px;margin:0 auto}.customization-title{font-size:2.5rem;color:#fff;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.player-progress{font-size:1.2rem;color:#ffffffe6;margin-bottom:1.25rem;font-weight:600}.customization-form{background:#fff;border-radius:20px;padding:1.5rem;margin-bottom:1.25rem;box-shadow:0 4px 6px #0000001a}.form-section{margin-bottom:1.5rem;text-align:left}.form-section:last-child{margin-bottom:0}.form-label{display:block;font-size:1.2rem;font-weight:600;color:#333;margin-bottom:.75rem}.name-input,.age-input{width:100%;padding:1rem;font-size:1.2rem;border:3px solid #e0e0e0;border-radius:12px;transition:border-color .3s 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#00000026;display:flex;flex-direction:column;align-items:center;gap:.25rem}.player-chip-name{font-size:1.1rem;text-shadow:1px 1px 2px rgba(0,0,0,.2)}.player-chip-age{font-size:.9rem;opacity:.95}.toggle-container{display:flex;flex-direction:column;align-items:center;gap:.5rem;cursor:pointer;-webkit-user-select:none;user-select:none}.toggle-checkbox{width:50px;height:28px;appearance:none;background:#ddd;border-radius:14px;position:relative;cursor:pointer;transition:background .3s ease;margin-bottom:.5rem}.toggle-checkbox:before{content:"";position:absolute;width:24px;height:24px;border-radius:50%;background:#fff;top:2px;left:2px;transition:transform .3s ease;box-shadow:0 2px 4px #0003}.toggle-checkbox:checked{background:linear-gradient(135deg,#667eea,#764ba2)}.toggle-checkbox:checked:before{transform:translate(22px)}.toggle-label{font-size:1.2rem;font-weight:600;color:#333}.toggle-description{font-size:.95rem;color:#666}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.category-option{background:#f5f5f5;border:3px solid transparent;border-radius:12px;padding:1.5rem;font-size:1.3rem;font-weight:600;color:#666;transition:all .3s ease;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.5rem}.category-icon{width:1.5rem;height:1.5rem;object-fit:contain}.category-option:hover{background:#e8e8e8;transform:scale(1.05)}.category-option.selected{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:transparent;transform:scale(1.05)}.questions-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.question-button{background:#f5f5f5;border:3px solid 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1rem}.setup-title{font-size:2rem;margin-bottom:1.5rem}.setup-section{padding:1.25rem;margin-bottom:1rem}.setup-label{font-size:1.1rem;margin-bottom:.75rem}.category-grid{grid-template-columns:1fr;gap:.75rem}.category-option{padding:1.2rem;font-size:1.2rem}.questions-grid{grid-template-columns:repeat(4,1fr);gap:.75rem}.question-button{padding:1rem;font-size:1.4rem}.start-button{font-size:1.2rem;padding:1.2rem 2rem;margin-top:1rem}}.game-header{background:#fff;padding:1.5rem;border-radius:20px;margin:1.5rem;box-shadow:0 4px 6px #0000001a;text-align:center}.current-player{font-size:2rem;font-weight:700;color:#4facfe;margin-bottom:.75rem}.game-stats{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap}.stat-item{font-size:1.1rem;color:#666;font-weight:600}.question-container{padding:2rem;max-width:800px;margin:0 auto}.difficulty-badge{display:inline-flex;align-items:center;padding:.4rem .8rem;border-radius:10px;font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;box-shadow:0 2px 4px #00000026}.difficulty-badge.easy{background:linear-gradient(135deg,#84fab0,#8fd3f4);color:#fff}.difficulty-badge.medium{background:linear-gradient(135deg,#ffa726,#fb8c00);color:#fff}.difficulty-badge.hard{background:linear-gradient(135deg,#ef5350,#e53935);color:#fff}.question-text{background:#fff;color:#333;font-size:1.8rem;padding:2rem;border-radius:20px;margin-bottom:2rem;box-shadow:0 4px 6px #0000001a;line-height:1.4;text-align:center}.answers-grid{display:grid;grid-template-columns:1fr;gap:1rem}.answer-button{background:#fff;border:3px solid transparent;border-radius:16px;padding:1.5rem;cursor:pointer;text-align:left;display:flex;align-items:center;gap:1rem;transition:all .3s ease;box-shadow:0 4px 6px #0000001a}.answer-button:hover:not(.disabled){transform:translate(10px) scale(1.02);box-shadow:0 6px 12px #00000026;border-color:#4facfe}.answer-button.disabled{opacity:.5;cursor:not-allowed}.answer-letter{background:#4facfe;color:#fff;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;flex-shrink:0}.answer-text{font-size:1.3rem;color:#333;font-weight:500;flex:1}.answer-button.correct{background:#4caf50;border-color:#4caf50;animation:correctPulse .5s ease}.answer-button.correct .answer-letter{background:#fff;color:#4caf50}.answer-button.correct .answer-text{color:#fff}.answer-button.incorrect{background:#f44336;border-color:#f44336;animation:shake .5s ease}.answer-button.incorrect .answer-letter{background:#fff;color:#f44336}.answer-button.incorrect .answer-text{color:#fff}.answer-button.correct-reveal{background:#4caf50;border-color:#4caf50}.answer-button.correct-reveal .answer-letter{background:#fff;color:#4caf50}.answer-button.correct-reveal .answer-text{color:#fff}.feedback-banner{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);padding:1.5rem 3rem;border-radius:16px;font-size:1.8rem;font-weight:700;color:#fff;box-shadow:0 6px 12px #0003;animation:slideUp .5s ease}.feedback-banner.correct{background:#4caf50}.feedback-banner.incorrect{background:#f44336}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes correctPulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}@keyframes slideUp{0%{bottom:-100px;opacity:0}to{bottom:2rem;opacity:1}}@media(max-width:600px){.player-announce{font-size:2.5rem}.transition-subtitle{font-size:1.3rem}.ready-button{font-size:1.3rem;padding:1.2rem 2rem}.current-player{font-size:1.5rem}.game-stats{gap:1rem}.stat-item{font-size:.95rem}.question-text{font-size:1.3rem;padding:1.5rem}.answer-letter{width:40px;height:40px;font-size:1.2rem}.answer-text{font-size:1.1rem}.feedback-banner{font-size:1.3rem;padding:1rem 2rem}}.results-screen{background:linear-gradient(135deg,#ffecd2,#fcb69f)}.results-content{text-align:center;padding:2rem;max-width:700px;margin:0 auto}.results-title{font-size:2.5rem;color:#333;margin-bottom:2rem;text-shadow:2px 2px 4px rgba(0,0,0,.1);animation:celebrationBounce 1s ease-in-out}.winner-announcement{background:linear-gradient(135deg,gold,#ffed4e);border-radius:20px;padding:2rem;margin-bottom:2rem;box-shadow:0 8px 16px #00000026;animation:winnerPulse 2s ease-in-out infinite}.winner-badge{font-size:3rem;font-weight:700;color:#333;margin-bottom:1rem}.winner-score{font-size:1.5rem;color:#555;font-weight:600}.tie-announcement{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:20px;padding:2rem;margin-bottom:2rem;box-shadow:0 8px 16px #00000026}.tie-text{font-size:1.5rem;color:#fff;font-weight:600;line-height:1.5}.scoreboard{background:#fff;border-radius:20px;padding:2rem;margin-bottom:2rem;box-shadow:0 4px 8px #0000001a}.scoreboard-title{font-size:1.8rem;color:#333;margin-bottom:1.5rem;border-bottom:3px solid #ffecd2;padding-bottom:1rem}.score-row{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;margin-bottom:.75rem;background:#f9f9f9;border-radius:12px;transition:all .3s ease}.score-row:hover{background:#f0f0f0;transform:translate(5px)}.winner-row{background:linear-gradient(135deg,gold,#ffed4e);font-weight:700;transform:scale(1.05);box-shadow:0 4px 8px #0000001a}.winner-row:hover{background:linear-gradient(135deg,gold,#ffed4e);transform:scale(1.05)}.player-name{font-size:1.3rem;color:#333;font-weight:600}.player-final-score{font-size:1.3rem;color:#333;font-weight:700}.percentage{font-size:1rem;color:#666;font-weight:400}.play-again-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:16px;padding:1.5rem 3rem;font-size:1.5rem;font-weight:700;cursor:pointer;box-shadow:0 6px 12px #00000026;transition:all .3s ease}.play-again-button:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 8px 16px #0003}.play-again-button:active{transform:translateY(-1px) scale(1.02)}@keyframes celebrationBounce{0%,to{transform:scale(1)}25%{transform:scale(1.1) rotate(-2deg)}75%{transform:scale(1.1) rotate(2deg)}}@keyframes winnerPulse{0%,to{transform:scale(1);box-shadow:0 8px 16px #00000026}50%{transform:scale(1.02);box-shadow:0 12px 24px #0003}}@media(max-width:600px){.results-title{font-size:1.8rem}.winner-badge{font-size:2rem}.winner-score,.tie-text{font-size:1.2rem}.scoreboard-title{font-size:1.4rem}.score-row{padding:.75rem 1rem}.player-name,.player-final-score{font-size:1.1rem}.play-again-button{font-size:1.2rem;padding:1.2rem 2rem}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;overflow:hidden}.app{width:100vw;height:100vh;overflow:hidden}.screen{width:100%;height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;overflow-y:auto;position:relative}.screen{-webkit-overflow-scrolling:touch}input,select,textarea{font-size:16px}button{min-height:48px;min-width:48px;font-family:inherit}.app{user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}.question-text,.answer-text{user-select:text;-webkit-user-select:text}@media(max-width:600px){html{font-size:14px}}@media(min-width:601px)and (max-width:900px){html{font-size:15px}}@media(min-width:901px){html{font-size:16px}}