:root{--font-main:"Pretendard Variable", Pretendard, system-ui, -apple-system, sans-serif;--font-title:var(--font-main);font-family:var(--font-main);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:#ffffffde;background-color:#0f172a;font-weight:400;line-height:1.5}body{background:radial-gradient(circle at top,#1e293b 0%,#0f172a 100%);justify-content:center;place-items:center;min-width:320px;min-height:100vh;margin:0;display:flex;overflow:hidden}#root{width:100%}*{box-sizing:border-box}.app-container{flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:800px;min-height:100vh;margin:0 auto;padding:2rem;display:flex}.start-screen,.game-screen,.leaderboard-screen{flex-direction:column;align-items:center;width:100%;animation:.3s ease-in-out fadeIn;display:flex}@keyframes 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#4ade80}.arrow-box.error{color:#f87171;z-index:10;background:#ef44444d;transform:scale(1.1);box-shadow:0 0 20px #ef4444cc,inset 0 0 0 2px #ef4444}.modal-overlay{z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{text-align:center;background:#0f172af2;border:1px solid #fff3;border-radius:24px;padding:3rem;animation:.5s cubic-bezier(.175,.885,.32,1.275) forwards popIn;position:relative;box-shadow:0 25px 50px -12px #00000080}@keyframes popIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.close-btn{color:#94a3b8;cursor:pointer;background:0 0;border:none;font-size:1.5rem;line-height:1;transition:color .2s;position:absolute;top:1.5rem;right:1.5rem}.close-btn:hover{color:#fff}.modal h2{color:#fff;margin:0 0 1rem;font-size:2.5rem}.modal p{color:#cbd5e1;margin-bottom:2rem;font-size:1.5rem}.share-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#3b82f6,#8b5cf6);border:none;border-radius:12px;padding:1rem 2.5rem;font-size:1.25rem;font-weight:700;transition:transform .2s,box-shadow .2s}.share-btn:hover{transform:translateY(-2px);box-shadow:0 10px 20px #8b5cf666}.leaderboard-container{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#1e293b80;border:1px solid #ffffff1a;border-radius:16px;width:100%;max-width:600px;max-height:55vh;margin-bottom:2rem;padding:1.5rem;overflow-y:auto}.leaderboard-container::-webkit-scrollbar{width:8px}.leaderboard-container::-webkit-scrollbar-track{background:#0003;border-radius:8px;margin:1rem 0}.leaderboard-container::-webkit-scrollbar-thumb{background:#fff3;border-radius:8px}.leaderboard-container::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.leaderboard-table{border-collapse:collapse;width:100%}.leaderboard-table th,.leaderboard-table td{text-align:left;border-bottom:1px solid #ffffff0d;padding:1rem}.leaderboard-table th{color:#94a3b8;text-transform:uppercase;font-size:.9rem;font-weight:600}.leaderboard-table tbody tr:last-child td{border-bottom:none}.leaderboard-table tbody tr:hover{background:#ffffff05}.login-prompt{text-align:center;margin-top:1rem}.login-prompt p{color:#94a3b8;margin-bottom:1rem}.nickname-section{border-top:1px solid #ffffff1a;flex-direction:column;align-items:center;gap:.5rem;margin-top:1rem;padding-top:1.5rem;display:flex}.nickname-input{color:#fff;text-align:center;background:#0000004d;border:1px solid #fff3;border-radius:8px;outline:none;width:100%;max-width:280px;padding:.75rem 1rem;font-size:1.1rem;transition:border-color .2s}.nickname-input:focus{border-color:#3b82f6}.byte-count{color:#64748b!important;margin:0!important;font-size:.8rem!important}.submit-btn{width:100%;max-width:280px;padding:.75rem;font-size:1.1rem}.submit-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none!important;transform:none!important}body.light-mode{color:#0f172a;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;background:radial-gradient(circle at top,#f8fafc 0%,#e2e8f0 100%)}body.light-mode h1{background:-webkit-linear-gradient(45deg,#0ea5e9,#8b5cf6,#ec4899);-webkit-text-fill-color:transparent;-webkit-background-clip:text}body.light-mode .subtitle{color:#475569}body.light-mode .icon-btn{color:#475569!important;background:#0000000d!important;border:1px solid #0000001a!important}body.light-mode .icon-btn:hover{color:#0f172a!important;background:#0000001a!important}body.light-mode .secondary-btn{color:#1e293b;background:#0000000d;border:1px solid #0000001a}body.light-mode .secondary-btn:hover:not(:disabled){background:#0000001a}.modal-section-label{color:#cbd5e1}body.light-mode .modal-info-box p,body.light-mode .modal-section-label{color:#475569!important}body.light-mode .profile-nickname-text,body.light-mode .backup-code-text{color:#0f172a!important}body.light-mode .back-btn:hover{color:#0f172a;background:#0000000d}body.light-mode .back-btn,body.light-mode .status-bar{color:#475569}body.light-mode .grid-container{background:#fff9;border:1px solid #0000001a;box-shadow:0 8px 32px #0000000d}body.light-mode .arrow-box{color:#475569;background:#0000000d}body.light-mode .arrow-box.pending{box-shadow:inset 0 0 0 1px #0000001a}body.light-mode .arrow-box.current{background:#3b82f626}body.light-mode .arrow-box.correct{background:#4ade8033}body.light-mode .arrow-box.error{background:#ef444433}body.light-mode .modal-overlay{background:#fff9}body.light-mode .modal{background:#fffffff2;border:1px solid #0000001a;box-shadow:0 25px 50px -12px #00000026}body.light-mode .modal h2{color:#0f172a}body.light-mode .modal p{color:#334155}body.light-mode .close-btn{color:#475569}body.light-mode .close-btn:hover{color:#0f172a}body.light-mode .leaderboard-container{background:#fff9;border:1px solid #0000001a}body.light-mode .leaderboard-table th{color:#475569}body.light-mode .leaderboard-table th,body.light-mode .leaderboard-table td{border-bottom:1px solid #0000000d}body.light-mode .leaderboard-table tbody tr:hover{background:#00000005}body.light-mode .nickname-input{color:#0f172a;background:#ffffff80;border:1px solid #00000026}body.light-mode .leaderboard-container::-webkit-scrollbar-track{background:#0000000d}body.light-mode .leaderboard-container::-webkit-scrollbar-thumb{background:#0003}body.light-mode .leaderboard-container::-webkit-scrollbar-thumb:hover{background:#0000004d}body.light-mode .modal-info-box{color:#334155!important;background:#3b82f61a!important;border-color:#3b82f633!important}.custom-tooltip-wrapper{display:inline-flex;position:relative}.custom-tooltip{visibility:hidden;color:#f8fafc;text-align:center;z-index:100;opacity:0;white-space:nowrap;pointer-events:none;background-color:#1e3a8af2;border:1px solid #3b82f680;border-radius:8px;padding:.5rem .8rem;font-size:.85rem;transition:opacity .15s ease-in-out;position:absolute;top:125%;left:50%;transform:translate(-50%);box-shadow:0 4px 6px #0000004d}.custom-tooltip-wrapper:hover .custom-tooltip{visibility:visible;opacity:1}.light-mode .custom-tooltip{color:#1e293b;background-color:#fffffff2;border:1px solid #94a3b880;box-shadow:0 4px 6px #0000001a}body.light-mode .modal-info-box h3,body.light-mode .modal-info-box .stat-highlight{color:#0f172a!important}body.light-mode .modal-info-box .stat-label,body.light-mode .modal-info-box .stat-date{color:#475569!important}body.light-mode .modal-info-box .stat-number{color:#ff7300!important}body.light-mode .modal-info-box .stat-empty{color:#475569!important}body.light-mode .inner-box{box-shadow:0 1px 3px #0000000d;background:#fff9!important;border:1px solid #3b82f64d!important}body.light-mode .ach-title{color:#0f172a!important}body.light-mode .ach-desc{color:#475569!important}body.light-mode .nickname-section{border-top:1px solid #00000026!important}@keyframes burn{0%{filter:drop-shadow(0 0 2px #ef4444);transform:scale(1)translateY(0)}50%{filter:drop-shadow(0 0 8px #f97316);transform:scale(1.1)translateY(-2px)}to{filter:drop-shadow(0 0 2px #ef4444);transform:scale(1)translateY(0)}}.flame-burning{animation:3s ease-in-out infinite burn}.sync-loader-container{color:#94a3b8;justify-content:center;align-items:center;gap:.3rem;height:14px;margin-top:2.4rem;font-size:10px;display:flex}.sync-spinner{box-sizing:border-box;border:2px solid #94a3b84d;border-top-color:#94a3b8;border-radius:50%;width:10px;height:10px;animation:1s linear infinite sync-spin}@keyframes sync-spin{to{transform:rotate(360deg)}}.achievement-popup{background:#1e3a8af2;box-shadow:0 4px 6px #00000080}.achievement-popup .achievement-title{color:#f8fafc}body.light-mode .achievement-popup{background:#fffffff2!important;border-color:#f59e0bcc!important;box-shadow:0 4px 12px #0000001a!important}body.light-mode .achievement-popup .achievement-title{color:#1e293b!important}