:root{font-family:NYTimes,Georgia,Times New Roman,serif;line-height:1.6;font-weight:400;--color-primary: #000000;--color-secondary: #363636;--color-accent: #6366f1;--color-background: #ffffff;--color-surface: #f8f9fa;--color-border: #e5e7eb;--color-text-primary: #000000;--color-text-secondary: #6b7280;--color-text-muted: #9ca3af;--color-success: #059669;--color-warning: #d97706;--color-error: #dc2626;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;padding:0;background-color:var(--color-background);color:var(--color-text-primary);min-height:100vh;font-family:inherit;overflow-x:hidden;overflow-y:auto}h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.2;color:var(--color-text-primary)}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}p{margin:0;line-height:1.6}button{border-radius:6px;border:1px solid var(--color-border);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-base);font-weight:500;font-family:inherit;background-color:var(--color-primary);color:var(--color-background);cursor:pointer;transition:all .2s ease;outline:none}button:hover{background-color:var(--color-secondary);transform:translateY(-1px)}button:active{transform:translateY(0)}button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}button.secondary{background-color:var(--color-background);color:var(--color-primary);border:1px solid var(--color-border)}button.secondary:hover{background-color:var(--color-surface)}input{border-radius:6px;border:1px solid var(--color-border);padding:var(--spacing-sm) var(--spacing-md);font-size:var(--text-base);font-family:inherit;background-color:var(--color-background);color:var(--color-text-primary);outline:none;transition:border-color .2s ease}input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #6366f11a}input::placeholder{color:var(--color-text-muted)}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.navigation-bar{background:var(--color-background);border-bottom:1px solid var(--color-border);position:fixed;top:0;left:0;right:0;z-index:1000;box-shadow:0 1px 3px #0000001a}.nav-container{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);height:60px}.nav-brand{display:flex;align-items:center}.brand-text{font-size:var(--text-2xl);font-weight:700;color:var(--color-primary);font-family:NYTimes,Georgia,Times New Roman,serif;letter-spacing:-.025em}.nav-links{display:flex;align-items:center;gap:var(--spacing-sm)}.nav-link{background:none;border:none;color:var(--color-text-secondary);font-size:var(--text-base);font-weight:500;padding:var(--spacing-sm) var(--spacing-lg);border-radius:6px;cursor:pointer;transition:all .2s ease;position:relative;font-family:inherit}.nav-link:hover{color:var(--color-text-primary);background-color:var(--color-surface)}.nav-link.active{color:var(--color-primary);background-color:transparent;font-weight:600}.nav-link.active:after{content:"";position:absolute;bottom:-12px;left:50%;transform:translate(-50%);width:100%;height:2px;background-color:var(--color-primary);border-radius:1px}@media (max-width: 768px){.nav-container{padding:var(--spacing-sm) var(--spacing-md);height:56px}.brand-text{font-size:var(--text-xl)}.nav-link{padding:var(--spacing-xs) var(--spacing-md);font-size:var(--text-sm)}.nav-link.active:after{bottom:-10px}}@media (max-width: 480px){.nav-container{padding:var(--spacing-xs) var(--spacing-sm);height:52px}.brand-text{font-size:var(--text-lg)}.nav-links{gap:var(--spacing-xs)}.nav-link{padding:var(--spacing-xs) var(--spacing-sm);font-size:var(--text-xs)}}.intro-page{min-height:100vh;background:linear-gradient(135deg,#f8f9fa,#e9ecef);display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);padding-top:80px;overflow:hidden}.intro-container{max-width:600px;width:100%;background:var(--color-background);border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;padding:var(--spacing-xl);text-align:center}.intro-header{margin-bottom:var(--spacing-lg)}.logo-container{display:flex;justify-content:center;margin-bottom:var(--spacing-sm)}.intro-logo{width:180px;height:180px;object-fit:contain;border-radius:16px;background:#fff}.intro-title{font-size:3.5rem;font-weight:700;color:var(--color-primary);margin-bottom:var(--spacing-sm);letter-spacing:-.02em}.intro-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);font-weight:400;margin-bottom:var(--spacing-sm)}.intro-content{margin-bottom:var(--spacing-lg)}.intro-description{margin-bottom:var(--spacing-lg);text-align:left}.intro-description h2{font-size:var(--text-2xl);margin-bottom:var(--spacing-lg);color:var(--color-primary);text-align:center}.intro-rules{list-style:none;padding:0;margin:0}.intro-rules li{padding:var(--spacing-sm) 0;position:relative;padding-left:var(--spacing-xl);color:var(--color-text-secondary);line-height:1.6}.intro-rules li:before{content:"✓";position:absolute;left:0;color:var(--color-success);font-weight:700;font-size:var(--text-lg)}.intro-form{display:flex;justify-content:center;margin-bottom:var(--spacing-lg)}.nickname-input{width:100%;padding:var(--spacing-md) var(--spacing-lg);font-size:var(--text-lg);border-radius:8px;border:2px solid var(--color-border);background:var(--color-background);transition:all .2s ease}.nickname-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 4px #6366f11a}.nickname-input:disabled{opacity:.6;cursor:not-allowed}.form-hint{margin-top:var(--spacing-sm);font-size:var(--text-sm);color:var(--color-text-muted)}.join-button{width:auto;min-width:200px;padding:var(--spacing-md) var(--spacing-2xl);font-size:var(--text-lg);font-weight:600;background:var(--color-primary);color:var(--color-background);border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;position:relative;overflow:hidden;box-shadow:0 2px 4px #0000001a}.join-button:hover:not(:disabled){background:var(--color-secondary);transform:translateY(-2px);box-shadow:0 8px 25px #00000026}.join-button:active{transform:translateY(0)}.join-button:focus-visible{outline:2px solid var(--color-accent);outline-offset:4px;box-shadow:0 0 0 4px #6366f11a}.join-button:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;animation:none}.join-button.loading{animation:pulse 1.5s ease-in-out infinite}.intro-footer{border-top:1px solid var(--color-border);padding-top:var(--spacing-lg)}.intro-note{color:var(--color-text-secondary);font-size:var(--text-base);font-style:italic;margin-bottom:var(--spacing-md)}.about-link-button{background:transparent;color:var(--color-accent);border:1px solid var(--color-accent);padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-sm);font-weight:500;border-radius:6px;cursor:pointer;transition:all .2s ease;text-decoration:none;display:inline-block}.about-link-button:hover{background:var(--color-accent);color:var(--color-background);transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}@media (max-width: 640px){.intro-page{padding:76px 0 0;background:var(--color-background)}.intro-container{max-width:none;width:100%;background:var(--color-background);border-radius:0;box-shadow:none;padding:var(--spacing-lg);min-height:100vh;height:auto;display:flex;flex-direction:column;justify-content:center}.intro-header{margin-bottom:var(--spacing-md)}.intro-logo{width:120px;height:120px}.intro-title{font-size:2rem;margin-bottom:var(--spacing-xs)}.intro-subtitle{font-size:var(--text-base);margin-bottom:var(--spacing-xs)}.intro-content{margin-bottom:var(--spacing-md)}.intro-description h2{font-size:var(--text-xl);margin-bottom:var(--spacing-md)}.intro-rules li{padding:var(--spacing-xs) 0;padding-left:var(--spacing-lg);font-size:var(--text-sm)}.join-button{min-width:160px;padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-base)}.intro-footer{padding-top:var(--spacing-md)}.intro-note{font-size:var(--text-sm)}}@media (max-height: 600px){.intro-container{padding:var(--spacing-md);justify-content:center;padding-top:var(--spacing-md);padding-bottom:var(--spacing-md)}.intro-logo{width:80px;height:80px}.intro-title{font-size:1.5rem}.intro-subtitle{font-size:var(--text-sm)}.intro-description h2{font-size:var(--text-lg)}.intro-rules li{padding:4px 0;padding-left:var(--spacing-md);font-size:var(--text-xs)}.intro-rules li:before{font-size:var(--text-sm)}.join-button{min-width:140px;padding:var(--spacing-xs) var(--spacing-md);font-size:var(--text-sm)}}.leaderboard{background:var(--color-background);border:2px solid var(--color-border);border-radius:12px;height:fit-content;box-shadow:0 4px 6px #0000000d;overflow:hidden}.leaderboard-header{padding:var(--spacing-lg);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;justify-content:space-between;align-items:center;min-height:48px}.leaderboard-title{font-size:var(--text-lg);font-weight:600;color:var(--color-text-primary);margin:0;padding:0;line-height:1.2;display:flex;align-items:center;height:100%}.player-count{font-size:var(--text-sm);color:var(--color-text-secondary);background:var(--color-background);padding:var(--spacing-xs) var(--spacing-sm);border-radius:12px;border:1px solid var(--color-border)}.leaderboard-list{max-height:400px;overflow-y:auto;transition:all .3s ease}.leaderboard-list::-webkit-scrollbar{width:6px}.leaderboard-list::-webkit-scrollbar-track{background:var(--color-surface)}.leaderboard-list::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}.leaderboard-list::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.player-item{display:flex;align-items:center;padding:var(--spacing-md) var(--spacing-lg);border-bottom:1px solid var(--color-border);transition:all .3s ease;gap:var(--spacing-md);transform:translateZ(0)}.player-item:hover{background:var(--color-surface)}.player-item:last-child{border-bottom:none}.player-item.current-player{background:linear-gradient(135deg,#6366f11a,#6366f10d);border-left:4px solid var(--color-accent);padding-left:calc(var(--spacing-lg) - 4px)}.player-item.offline{opacity:.6}.player-item.away{opacity:.8;background:#f59e0b0d;border-left:2px solid #f59e0b}.player-item.updating{background:#22c55e0d;border-left:3px solid var(--color-success)}.player-rank{min-width:40px;text-align:center;transition:all .3s ease}.player-rank.updating{transform:scale(1.1)}.rank-icon{font-size:var(--text-lg);font-weight:600;color:var(--color-text-primary)}.player-info{flex:1;min-width:0}.player-name-container{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-xs);gap:var(--spacing-sm)}.player-name{font-weight:600;color:var(--color-text-primary);font-size:var(--text-base);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.player-status{display:flex;align-items:center;gap:var(--spacing-xs);flex-shrink:0}.status-indicator{font-size:var(--text-xs);line-height:1}.status-indicator.online{color:var(--color-success)}.status-indicator.away{color:#f59e0b}.status-indicator.offline{color:var(--color-text-muted)}.you-badge{font-size:var(--text-xs);color:var(--color-primary);font-weight:500;opacity:.8;margin-right:var(--spacing-xs)}.player-score{font-size:var(--text-sm);font-weight:600;display:flex;align-items:center;gap:var(--spacing-xs);transition:all .3s ease}.player-score.updating{transform:scale(1.1);color:var(--color-success);font-weight:700;text-shadow:0 0 8px rgba(34,197,94,.3)}.player-score.high-score{color:var(--color-success)}.player-score.medium-score{color:var(--color-warning)}.player-score.low-score{color:var(--color-text-secondary)}.leaderboard-footer{padding:var(--spacing-md) var(--spacing-lg);background:var(--color-surface);border-top:1px solid var(--color-border)}.scoring-info{font-size:var(--text-xs);color:var(--color-text-secondary);margin:0;text-align:center;line-height:1.4}.loading-message,.error-message{padding:var(--spacing-lg);text-align:center;color:var(--color-text-secondary);font-style:italic}.error-message{color:var(--color-error)}@media (max-width: 1024px){.leaderboard{margin-bottom:var(--spacing-lg)}.leaderboard-list{max-height:300px}.player-item{padding:var(--spacing-sm) var(--spacing-md)}.player-name-container{flex-direction:column;align-items:flex-start;gap:var(--spacing-xs)}.player-status{align-self:flex-end}}@media (max-width: 1024px){.leaderboard{border-width:1px;border-radius:8px;box-shadow:0 2px 4px #0000000d}.leaderboard-header{padding:var(--spacing-sm) var(--spacing-md)!important;display:flex;justify-content:space-between;align-items:center;min-height:44px}.leaderboard-title{font-size:var(--text-sm)!important;margin:0!important;padding:0;line-height:inline;display:flex;align-items:center;height:100%}.leaderboard-footer{padding:var(--spacing-xs) var(--spacing-sm)}.player-count{font-size:var(--text-xs)!important;padding:2px var(--spacing-xs);border-radius:8px;border-width:1px}.player-item{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);flex-wrap:nowrap;border-bottom-width:1px}.player-item.current-player{border-left-width:3px;padding-left:calc(var(--spacing-md) - 3px)}.rank-icon{font-size:var(--text-sm);flex-shrink:0}.player-name{font-size:var(--text-xs);line-height:1.2;flex:1 1 auto;white-space:normal;word-break:break-word}.player-score{font-size:var(--text-xs);line-height:1.2;flex-shrink:0}.player-name-container{margin-bottom:0;width:100%;gap:2px}.you-badge{font-size:10px;margin-right:2px}.status-indicator{font-size:10px}.scoring-info{font-size:10px;line-height:1.3}.leaderboard-list::-webkit-scrollbar{width:4px}.leaderboard-list::-webkit-scrollbar-thumb{border-radius:2px}}@media (max-width: 480px){.leaderboard{border-radius:6px;margin:var(--spacing-xs)}.leaderboard-header{padding:var(--spacing-xs) var(--spacing-md)!important;display:flex;justify-content:space-between;align-items:center;min-height:40px!important}.leaderboard-title{font-size:var(--text-sm)!important;margin:0!important;padding:0;line-height:20px;display:block;align-items:center}.leaderboard-footer{padding:6px var(--spacing-xs)}.player-item{padding:var(--spacing-sm) var(--spacing-md);gap:6px}.player-item.current-player{border-left-width:2px;padding-left:calc(var(--spacing-md) - 2px)}.rank-icon{font-size:var(--text-xs);min-width:24px}.player-name,.player-score{font-size:10px;line-height:1.1}.player-count{font-size:10px;padding:1px 4px;border-radius:6px}.you-badge,.status-indicator{font-size:9px}.scoring-info{font-size:9px;line-height:1.2}.leaderboard-list{max-height:250px}}.chat-history-loading{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md);background:var(--color-surface);border-bottom:1px solid var(--color-border);color:var(--color-text-secondary);font-size:var(--text-sm)}.loading-spinner{width:16px;height:16px;border:2px solid var(--color-border);border-top:2px solid var(--color-accent);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.chat-component{background:transparent;display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden;height:100%}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-md) var(--spacing-xl);display:flex;flex-direction:column;gap:var(--spacing-md);min-height:0;height:0}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:var(--color-surface);border-radius:3px}.chat-messages::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:3px}.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.message{padding:var(--spacing-sm) var(--spacing-md);border-radius:8px;background:var(--color-surface);border:1px solid var(--color-border);max-width:90%;word-wrap:break-word}.message.own-message{align-self:flex-end;background:var(--color-accent);color:#fff;border-color:var(--color-accent)}.message.answer{background:linear-gradient(135deg,#e0f2fe,#b3e5fc);border-color:#81d4fa}.message.answer.own-message{background:linear-gradient(135deg,var(--color-accent) 0%,#5a67d8 100%);border-color:var(--color-accent)}.message-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xs);gap:var(--spacing-sm)}.message-player{font-weight:600;font-size:var(--text-sm);color:var(--color-text-primary)}.message.own-message .message-player{color:#ffffffe6}.message-timestamp{font-size:var(--text-xs);color:var(--color-text-muted);opacity:.8}.message.own-message .message-timestamp{color:#ffffffb3}.message-content{font-size:var(--text-sm);line-height:1.4;color:var(--color-text-secondary)}.message.own-message .message-content{color:#ffffffe6}.message.bot .message-content{color:var(--color-text-primary)}.bot-question{font-weight:600;color:var(--color-accent);display:block;margin-bottom:var(--spacing-xs)}.answer-highlight{font-weight:700;color:#10b981;background:#10b9811a;padding:2px 6px;border-radius:4px;display:inline-block}.first-responder{font-weight:600;color:#f59e0b;background:#f59e0b1a;padding:2px 6px;border-radius:4px;display:inline-block}.message .player-name{font-weight:700;color:var(--color-accent);background:#6366f11a;padding:2px 6px;border-radius:4px;display:inline-block}.mention{font-weight:600;color:var(--color-accent);background:#6366f11a;padding:2px 4px;border-radius:4px;display:inline-block}.answer-prefix,.bot-prefix{margin-right:var(--spacing-xs);font-size:var(--text-base)}.message.bot{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border-color:#0ea5e9;border-left:4px solid #0ea5e9;white-space:pre-line}.message.bot .message-player{color:#0ea5e9;font-weight:600}.message.bot .message-content{color:#0c4a6e;font-family:Georgia,serif;line-height:1.6;font-weight:400;font-size:var(--text-sm)}.message.bot .answer-text{color:#059669;font-weight:700}.bot-question{display:inline;color:var(--color-text-gray);font-size:.85em;margin-right:8px;font-weight:400}.answer-text{font-weight:600;color:var(--color-success);font-size:.9em}.chat-form{padding:var(--spacing-lg) var(--spacing-xl);border-top:1px solid var(--color-border);background:var(--color-surface);flex-shrink:0;min-height:0}.chat-input-group{display:flex;gap:var(--spacing-sm)}.chat-input{flex:1;padding:var(--spacing-sm) var(--spacing-md);border-radius:6px;border:1px solid var(--color-border);background:var(--color-background);font-size:var(--text-sm);font-size:16px;-webkit-appearance:none;-moz-appearance:none;appearance:none}.chat-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 2px #6366f11a}.send-button{padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-sm);white-space:nowrap}.send-button:disabled{background:var(--color-surface);color:var(--color-text-muted);cursor:not-allowed;transform:none}@media (max-width: 768px){.chat-component{height:300px;position:relative;-webkit-overflow-scrolling:touch}.chat-header{padding:var(--spacing-md)}.chat-messages{padding:var(--spacing-sm)}.chat-form{padding:var(--spacing-md);position:sticky;bottom:0;background:var(--color-surface);z-index:10}.message{max-width:95%}.chat-input-group{flex-direction:row}.chat-input{font-size:16px!important;-webkit-appearance:none;-moz-appearance:none;appearance:none;border-radius:6px;transform:translateZ(0)}.chat-input:focus{transform:translateZ(0);outline:none}.send-button{align-self:flex-end;padding:var(--spacing-sm) var(--spacing-xl)}.message-player,.message.bot .message-content{font-size:var(--text-xs)}.bot-question{font-size:.75em}.answer-text{font-size:.8em}}@media (max-width: 480px){.chat-input-group{align-items:center;gap:var(--spacing-xs)}.chat-input{border-radius:4px;padding:var(--spacing-sm) var(--spacing-sm);height:40px;box-sizing:border-box;line-height:1.2;flex:1}.send-button{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--text-xs);height:40px;box-sizing:border-box;flex-shrink:0}}.hint-display{display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm);margin-top:var(--spacing-md);padding:0;background:transparent;border:none;box-shadow:none}.hint-label{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);white-space:nowrap}.hint-text{font-size:var(--text-base);font-weight:600;color:var(--color-primary);font-family:Courier New,monospace;letter-spacing:1px;line-height:1.2;word-break:break-word}.hint-complete{font-size:var(--text-sm);color:var(--color-success);margin-left:var(--spacing-xs)}@keyframes hintReveal{0%{opacity:.7;transform:scale(1.02)}to{opacity:1;transform:scale(1)}}@media (max-width: 768px){.hint-text{font-size:var(--text-sm);letter-spacing:.5px}.hint-display{margin-top:var(--spacing-sm);gap:var(--spacing-xs)}}.welcome-screen{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(135deg,#f8f9fa,#e9ecef);opacity:1;transition:opacity .3s ease-out}.welcome-screen.fade-out{opacity:0}.game-room{height:100vh;background-color:var(--color-background);display:flex;flex-direction:column;overflow:hidden;opacity:0;animation:fadeIn .3s ease-out forwards}.game-room.fade-in{opacity:1}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.welcome-content{text-align:center;max-width:500px;padding:var(--spacing-xl);animation:contentEntrance .8s ease-out}@keyframes contentEntrance{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.welcome-title{font-size:var(--text-4xl);font-weight:700;color:var(--color-primary);margin-bottom:var(--spacing-lg);letter-spacing:-.02em}.welcome-subtitle{font-size:var(--text-lg);color:var(--color-text-secondary);margin-bottom:var(--spacing-md)}.nickname-display{background:var(--color-accent);color:#fff;padding:var(--spacing-lg) var(--spacing-xl);border-radius:12px;font-size:var(--text-2xl);font-weight:600;margin:var(--spacing-lg) 0;box-shadow:0 4px 6px #0000001a;letter-spacing:.5px}.welcome-message{font-size:var(--text-base);color:var(--color-text-secondary);font-style:italic;margin-top:var(--spacing-lg);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.7}50%{opacity:1}}.welcome-loading{margin-top:var(--spacing-lg);text-align:center}.loading-dots{font-size:var(--text-base);color:var(--color-text-secondary);font-style:italic;position:relative}.loading-dots:after{content:"";animation:dots 1.5s steps(4,end) infinite}@keyframes dots{0%,20%{content:""}40%{content:"."}60%{content:".."}80%,to{content:"..."}}.game-header{background:var(--color-background);border-bottom:2px solid var(--color-border);box-shadow:0 2px 4px #0000000d;transition:all .3s ease}.header-main{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg) var(--spacing-xl)}.header-left{display:flex;align-items:center;gap:var(--spacing-lg)}.game-title{font-size:var(--text-2xl);font-weight:700;color:var(--color-primary);margin:0}.player-welcome{color:var(--color-text-secondary);font-size:var(--text-base);font-weight:500}.leave-button{padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-sm)}.about-button{padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--text-sm);margin-right:var(--spacing-sm)}.header-leaderboard{display:none}@media (max-width: 1024px){.header-leaderboard{display:block;position:fixed;inset:50px 0 0;z-index:1000;background:#fff;padding:var(--spacing-md);height:calc(100vh - 50px);height:calc(100dvh - 50px);overflow-y:auto;animation:slideDown .3s ease-out}}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.game-layout{flex:1;display:grid;grid-template-columns:350px 1fr;gap:var(--spacing-lg);padding:var(--spacing-lg);height:calc(100vh - 120px);min-height:0;overflow:hidden}.game-main{display:flex;flex-direction:column;gap:var(--spacing-lg);min-height:0;overflow:hidden}.unified-chat-section{background:var(--color-background);border:2px solid var(--color-border);border-radius:12px;box-shadow:0 4px 6px #0000000d;display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden;max-height:calc(100vh - 120px)}.question-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg) var(--spacing-xl) var(--spacing-md) var(--spacing-xl);flex-wrap:wrap;gap:var(--spacing-md);flex-shrink:0;min-height:0}.question-category{background:var(--color-accent);color:#fff;padding:var(--spacing-xs) var(--spacing-sm);border-radius:20px;font-size:var(--text-sm);font-weight:600}.question-difficulty{background:var(--color-surface);color:var(--color-text-secondary);padding:var(--spacing-xs) var(--spacing-sm);border-radius:20px;font-size:var(--text-sm);font-weight:500}.timer{display:flex;align-items:center;gap:var(--spacing-sm)}.timer-text{font-weight:700;color:var(--color-text-primary);font-size:var(--text-sm);min-width:60px;text-align:center}.timer-bar{width:120px;height:10px;background:var(--color-border);border-radius:5px;overflow:hidden;box-shadow:inset 0 1px 3px #0000001a}.timer-progress{height:100%;background:linear-gradient(90deg,var(--color-success),var(--color-warning));transition:width 1s linear;border-radius:5px;box-shadow:0 1px 3px #0003}@media (max-width: 1024px){.timer{padding:var(--spacing-xs);gap:var(--spacing-xs)}.timer-text{font-size:var(--text-xs);min-width:50px}.timer-bar{width:80px;height:8px}}.question-content{padding:0 var(--spacing-xl) var(--spacing-lg) var(--spacing-xl);text-align:center;flex-shrink:0;border-bottom:1px solid var(--color-border);padding-bottom:var(--spacing-lg);min-height:0}.answer-info{margin-top:var(--spacing-md);text-align:center;color:var(--color-text-secondary);font-size:var(--text-base);font-weight:400}.correct-answer{font-weight:700;color:var(--color-success);margin-right:var(--spacing-xs)}.question-text{font-size:var(--text-2xl);color:var(--color-text-primary);line-height:1.4;margin:0;font-weight:600}.answer-form{margin-top:var(--spacing-xl)}.answer-input-group{display:flex;gap:var(--spacing-md);max-width:600px;margin:0 auto}.answer-input{flex:1;padding:var(--spacing-md) var(--spacing-lg);font-size:var(--text-lg);border-radius:8px;border:2px solid var(--color-border);background:var(--color-background)}.answer-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #6366f11a}.answer-input:disabled{background:var(--color-surface);color:var(--color-text-muted)}.submit-answer-button{padding:var(--spacing-md) var(--spacing-xl);font-size:var(--text-base);font-weight:600;white-space:nowrap}.submit-answer-button:disabled{background:var(--color-surface);color:var(--color-text-muted);cursor:not-allowed;transform:none}.game-sidebar{display:flex;flex-direction:column;min-height:0;height:100%}@media (max-width: 1024px){.game-layout{grid-template-columns:1fr;grid-template-rows:auto 1fr}.game-main{order:-1;min-height:auto}.game-sidebar{display:none}.mobile-menu-button{display:block!important;background:#fff!important;border:none!important;outline:none!important;cursor:pointer;padding:var(--spacing-sm)!important;margin-right:var(--spacing-sm);transition:transform .3s ease;width:40px!important;height:40px!important;border-radius:8px!important;display:flex!important;align-items:center!important;justify-content:center!important;box-shadow:none!important;-webkit-tap-highlight-color:transparent!important;-webkit-touch-callout:none!important;-webkit-user-select:none!important;-moz-user-select:none!important;-ms-user-select:none!important;user-select:none!important}.mobile-menu-button:hover{background:#fff!important;border:none!important;box-shadow:none!important}.mobile-menu-button:active,.mobile-menu-button:focus,.mobile-menu-button:focus-visible,.mobile-menu-button:focus-within{background:#fff!important;border:none!important;box-shadow:none!important;outline:none!important;-webkit-tap-highlight-color:transparent!important}.mobile-menu-button.expanded{transform:rotate(180deg) scaleX(-1)}.header-leaderboard{display:block;position:fixed;inset:50px 0 0;z-index:1000;background:#fff;padding:var(--spacing-md);height:calc(100vh - 50px);height:calc(100dvh - 50px);overflow-y:auto;animation:slideDown .3s ease-out}.header-main{padding:var(--spacing-md) var(--spacing-lg)}.game-title{font-size:var(--text-xl)}.player-welcome{font-size:var(--text-sm)}.header-leaderboard .leaderboard-title{font-size:var(--text-base);margin-bottom:var(--spacing-sm)}.header-leaderboard .player-count{font-size:var(--text-sm)}.header-leaderboard .player-name{font-size:var(--text-sm);line-height:1.2}.header-leaderboard .player-score{font-size:var(--text-xs);line-height:1.2}.header-leaderboard .scoring-info{font-size:var(--text-xs);padding:var(--spacing-sm)}}@media (max-width: 1024px){.welcome-content{padding:var(--spacing-lg);max-width:90%}.welcome-title{font-size:var(--text-3xl)}.nickname-display{font-size:var(--text-xl);padding:var(--spacing-md) var(--spacing-lg)}.game-header{padding:var(--spacing-md);flex-direction:column;gap:var(--spacing-md);text-align:center}.header-left{flex-direction:column;gap:var(--spacing-sm)}.game-layout{padding:var(--spacing-md);gap:var(--spacing-md)}.question-section{padding:var(--spacing-lg)}.question-header{flex-direction:column;align-items:flex-start;gap:var(--spacing-sm)}.timer{align-self:stretch;justify-content:space-between}.answer-input-group{flex-direction:column}.question-text{font-size:var(--text-sm)}}@media (max-width: 1024px){.game-room{height:100vh;height:100dvh}.game-header{min-height:30px!important;background:var(--color-background);border-bottom:1px solid var(--color-border);box-shadow:0 1px 3px #0000001a}.header-main{padding:6px var(--spacing-md);flex-direction:row;justify-content:space-between;align-items:center;text-align:left;min-height:20px!important;height:20px!important}.header-left{flex-direction:row;gap:var(--spacing-sm);align-items:center}.game-title{font-size:var(--text-lg);margin:0}.player-welcome,.leave-button{display:none}.game-layout{grid-template-columns:1fr;grid-template-rows:1fr;padding:0;gap:0;height:calc(100vh - 50px);height:calc(100dvh - 50px)}.game-sidebar{display:none}.game-main{order:0;min-height:0;height:100%}.unified-chat-section{border:none;border-radius:0;box-shadow:none;max-height:100%;height:100%}.question-header{padding:var(--spacing-sm) var(--spacing-md);flex-direction:row;align-items:center;gap:var(--spacing-sm);border-bottom:1px solid var(--color-border);background:var(--color-surface)}.question-category,.question-difficulty{font-size:var(--text-xs);padding:var(--spacing-xs) var(--spacing-sm)}.timer{margin-left:auto}.timer-text{font-size:var(--text-xs)}.timer-bar{width:60px;height:6px}.question-content{padding:var(--spacing-md);border-bottom:1px solid var(--color-border);background:var(--color-background)}.answer-info{font-size:var(--text-sm)}.answer-form{margin-top:var(--spacing-md)}.answer-input-group{flex-direction:column;gap:var(--spacing-sm);padding:0 var(--spacing-md)}.answer-input{font-size:var(--text-base);padding:var(--spacing-sm) var(--spacing-md)}.submit-answer-button{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--text-sm)}}.mobile-menu-button{display:none}.about-page{min-height:100vh;background:linear-gradient(135deg,#f8f9fa,#e9ecef);padding:var(--spacing-lg);padding-top:80px;overflow-y:auto;overflow-x:hidden;position:relative}.about-container{max-width:800px;margin:0 auto;background:var(--color-background);border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;overflow:visible}.about-header{background:var(--color-primary);color:var(--color-background);padding:var(--spacing-xl);position:relative}.about-title-section{text-align:center}.about-title{font-size:var(--text-4xl);font-weight:700;margin-bottom:var(--spacing-sm);color:var(--color-background)}.about-subtitle{font-size:var(--text-lg);color:#ffffffe6;font-weight:400;margin:0}.about-content{padding:var(--spacing-2xl)}.about-section{margin-bottom:var(--spacing-2xl)}.about-section:last-child{margin-bottom:0}.about-section h2{font-size:var(--text-3xl);font-weight:700;color:var(--color-primary);margin-bottom:var(--spacing-lg);text-align:center}.about-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.feature-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-lg);background:var(--color-surface);border-radius:8px;border:1px solid var(--color-border);transition:all .2s ease}.feature-item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.feature-icon{font-size:2rem;flex-shrink:0;margin-top:var(--spacing-xs)}.feature-content h3{font-size:var(--text-xl);font-weight:600;color:var(--color-primary);margin-bottom:var(--spacing-sm)}.feature-content p{color:var(--color-text-secondary);line-height:1.6;margin:0}.contact-description{text-align:center;color:var(--color-text-secondary);font-size:var(--text-lg);margin-bottom:var(--spacing-xl);line-height:1.6}.contact-form{max-width:600px;margin:0 auto}.form-group{margin-bottom:var(--spacing-xl)}.form-label{display:block;font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-sm);font-size:var(--text-lg)}.form-input,.form-textarea{width:100%;padding:var(--spacing-md) var(--spacing-lg);font-size:var(--text-base);border-radius:8px;border:2px solid var(--color-border);background:var(--color-background);color:var(--color-text-primary);font-family:inherit;transition:all .2s ease;resize:vertical}.form-input:focus,.form-textarea:focus{border-color:var(--color-accent);box-shadow:0 0 0 4px #6366f11a;outline:none}.form-textarea{min-height:120px;line-height:1.6}.form-actions{text-align:center;margin-top:var(--spacing-xl)}.submit-button{background:var(--color-primary);color:var(--color-background);border:none;padding:var(--spacing-md) var(--spacing-2xl);font-size:var(--text-lg);font-weight:600;border-radius:8px;cursor:pointer;transition:all .2s ease;position:relative;overflow:hidden;min-width:160px}.submit-button:hover:not(:disabled){background:var(--color-secondary);transform:translateY(-2px);box-shadow:0 8px 25px #00000026}.submit-button:active{transform:translateY(0)}.submit-button:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}.submit-button.loading{animation:pulse 1.5s ease-in-out infinite}.status-message{margin-top:var(--spacing-lg);padding:var(--spacing-md) var(--spacing-lg);border-radius:8px;text-align:center;font-weight:500;font-size:var(--text-base)}.status-message.success{background:#0596691a;color:var(--color-success);border:1px solid rgba(5,150,105,.2)}.status-message.error{background:#dc26261a;color:var(--color-error);border:1px solid rgba(220,38,38,.2)}.about-info{text-align:center;max-width:600px;margin:0 auto}.about-info p{color:var(--color-text-secondary);line-height:1.6;margin-bottom:var(--spacing-lg);font-size:var(--text-lg)}.about-info p:last-child{margin-bottom:0}.credit-link{color:var(--color-accent);text-decoration:none;font-weight:600;transition:all .2s ease}.credit-link:hover{color:var(--color-secondary);text-decoration:underline}.rate-limit-info{margin-top:var(--spacing-sm);font-size:var(--text-sm);color:var(--color-success);font-weight:500}.rate-limit-warning{margin-top:var(--spacing-sm);font-size:var(--text-sm);color:var(--color-warning);font-weight:500}.rate-limit-indicator{background:var(--color-surface);border:1px solid var(--color-border);border-radius:6px;padding:var(--spacing-sm) var(--spacing-md);margin-bottom:var(--spacing-lg);text-align:center;font-size:var(--text-sm);color:var(--color-text-secondary);font-weight:500}.about-footer{background:var(--color-surface);padding:var(--spacing-xl);text-align:center;border-top:1px solid var(--color-border)}.footer-text{color:var(--color-text-secondary);font-size:var(--text-base);margin:0;font-style:italic}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@media (max-width: 768px){.about-page{padding:var(--spacing-sm);padding-top:76px}.about-container{border-radius:8px}.about-header{padding:var(--spacing-lg)}.about-title{font-size:var(--text-3xl)}.about-subtitle{font-size:var(--text-base)}.about-content{padding:var(--spacing-lg)}.about-section h2{font-size:var(--text-2xl)}.about-features{grid-template-columns:1fr;gap:var(--spacing-md)}.feature-item{padding:var(--spacing-md);flex-direction:column;text-align:center}.feature-icon{margin-top:0;margin-bottom:var(--spacing-sm)}.contact-form{max-width:100%}.form-input,.form-textarea{padding:var(--spacing-sm) var(--spacing-md)}.submit-button{width:100%;padding:var(--spacing-md) var(--spacing-lg)}}@media (max-width: 480px){.about-page{padding:72px 0 0;background:var(--color-background)}.about-container{border-radius:0;box-shadow:none;min-height:100vh}.about-header,.about-content{padding:var(--spacing-md)}.about-title{font-size:var(--text-2xl)}.about-subtitle{font-size:var(--text-sm)}.about-section h2{font-size:var(--text-xl)}.feature-item{padding:var(--spacing-sm)}.feature-content h3{font-size:var(--text-lg)}.about-info p{font-size:var(--text-base)}}.app{min-height:100vh;background-color:var(--color-background);overflow:hidden}