.snapspot-game{display:flex;flex-direction:column;align-items:center;min-height:100vh;background:#111827;padding:1rem;gap:1rem}.snapspot-header{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1240px;padding:0 .5rem}.snapspot-title{font-size:1.2rem;font-weight:700;color:#f3f4f6;margin:0}.snapspot-progress{font-size:1.1rem;font-weight:700;color:#fff;background:#ffffff1f;padding:.35rem 1rem;border-radius:20px;letter-spacing:.05em}.snapspot-images{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center;width:100%;max-width:1240px}.snapspot-image-wrap{position:relative;cursor:crosshair;border-radius:10px;overflow:hidden;box-shadow:0 4px 24px #00000080;flex:1 1 320px;max-width:610px;-webkit-tap-highlight-color:transparent;touch-action:none;-webkit-user-select:none;user-select:none}.snapspot-image-wrap.is-zoomed{cursor:grab}.snapspot-image-wrap.is-zoomed:active{cursor:grabbing}.snapspot-image-wrap>div:first-child{width:100%;will-change:transform}.snapspot-image-wrap img{display:block;width:100%;height:auto;pointer-events:none;-webkit-user-select:none;user-select:none}.snapspot-zoom-btn{width:28px;height:28px;border-radius:50%;border:1.5px solid rgba(255,255,255,.4);background:#ffffff1a;color:#fff;font-size:1.1rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s;padding:0}.snapspot-zoom-btn:hover:not(:disabled){background:#ffffff40}.snapspot-zoom-btn:disabled{opacity:.35;cursor:default}.snapspot-zoom-label{font-size:.8rem;font-weight:700;color:#d1d5db;min-width:2.5rem;text-align:center}.snapspot-found-marker{position:absolute;transform:translate(-50%,-50%);border:3px solid #22c55e;border-radius:50%;background:#22c55e26;pointer-events:none;animation:snapspot-pop .3s cubic-bezier(.34,1.56,.64,1)}@keyframes snapspot-pop{0%{transform:translate(-50%,-50%) scale(1.6);opacity:0}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.snapspot-wrong-flash{position:absolute;width:48px;height:48px;transform:translate(-50%,-50%);border-radius:50%;border:2.5px solid #ef4444;background:#ef444433;pointer-events:none;animation:snapspot-wrong .6s ease-out forwards}@keyframes snapspot-wrong{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(2.2)}}.snapspot-win-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;display:flex;align-items:center;justify-content:center;z-index:200;animation:snapspot-fadein .35s ease}@keyframes snapspot-fadein{0%{opacity:0}to{opacity:1}}.snapspot-win-card{background:#fff;border-radius:20px;padding:2.5rem 3.5rem;text-align:center;box-shadow:0 12px 48px #0006;animation:snapspot-slide-up .35s cubic-bezier(.34,1.56,.64,1)}@keyframes snapspot-slide-up{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.snapspot-win-emoji{font-size:3.5rem;margin-bottom:.75rem}.snapspot-win-card h2{font-size:1.8rem;color:#111;margin:0 0 .5rem}.snapspot-win-card p{color:#6b7280;margin:0;font-size:1rem}.snapspot-loading{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.4rem;color:#9ca3af;background:#111827}@font-face{font-family:Kaph;src:url(./assets/fonts/Kaph-Regular.woff) format("woff");font-weight:400;font-style:normal}@font-face{font-family:monogram;src:url(/assets/monogram-BARivBQV.ttf) format("truetype");font-weight:400;font-style:normal}:root{--bg-primary: #ffffff;--bg-secondary: #f0f4f8;--brand-primary: #3b6b91;--brand-secondary: #7499b9;--text-main: #34495e;--text-muted: #7f8c8d;--grid-line-thick: #3b6b91;--grid-line-thin: #bdc3c7;--cell-bg: #ffffff;--cell-highlight: #e3f2fd;--cell-selected: #bbdefb;--cell-same-num: #e1f5fe;--error-color: #e74c3c;--accent-blue: #5487b1}*{box-sizing:border-box}body{margin:0;padding:0;font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-main);display:flex;justify-content:center;overflow-x:hidden}#root{width:100%;max-width:500px;padding:1rem}.sudoku-container{display:flex;flex-direction:column;gap:.5rem;width:100%}.game-header{display:flex;flex-direction:column;gap:0;padding:0;margin-bottom:0}.game-nav{display:flex;justify-content:space-between;align-items:center;background:#2d3a4a;padding:.6rem .75rem;border-radius:10px;box-shadow:0 4px 12px #0000002e}.game-nav-left,.game-nav-right{display:flex;align-items:center;gap:.4rem}.nav-icon-btn{background:#ffffff1f;border:none;border-radius:12px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#cbd5e1}.nav-icon-btn:hover{background:#fff3}.game-info-bar{display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;padding:.4rem .75rem .2rem}.info-left{display:flex;align-items:center}.info-center{display:flex;align-items:center;justify-content:center;gap:.4rem}.info-right{display:flex;align-items:center;justify-content:flex-end;gap:.4rem}.header-value{font-size:1.1rem;font-weight:600;color:var(--text-main)}.difficulty-select{border:none;background:transparent;font-size:1.1rem;font-weight:600;color:var(--text-main);cursor:pointer;padding:0;display:flex;align-items:center;gap:.25rem}.pause-btn{background:#eef2f7;border:none;border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--brand-primary)}.sudoku-board{display:grid;grid-template-columns:repeat(9,1fr);border:2px solid var(--brand-primary);background-color:transparent;gap:0;aspect-ratio:1}.sudoku-cell{background-color:var(--cell-bg);display:flex;justify-content:center;align-items:center;font-size:1.6rem;font-weight:400;cursor:pointer;-webkit-user-select:none;user-select:none;position:relative;width:100%;aspect-ratio:1;border-right:1px solid #b8cdd8;border-bottom:1px solid #b8cdd8}.sudoku-cell.highlight{background-color:var(--cell-highlight)}.sudoku-cell.selected{background-color:var(--cell-selected)!important}.sudoku-cell.initial{color:#2c3e50;font-weight:500}.sudoku-cell.user.error{color:var(--error-color)}.sudoku-cell.user{color:var(--brand-primary)}.sudoku-cell.error{color:var(--error-color)}.level-badge{background:var(--brand-primary);color:#fff;padding:.2rem .6rem;border-radius:4px;font-size:.9rem;font-weight:600;margin-left:.5rem}.bonus-btn{display:flex;align-items:center;gap:.5rem;background:#27ae60!important;margin:0 auto}.bonus-btn:hover{background:#219150!important}.sudoku-cell:nth-child(9n){border-right:none}.sudoku-cell:nth-child(n+73){border-bottom:none}.sudoku-cell:nth-child(3n):not(:nth-child(9n)){border-right:2px solid var(--brand-primary)}.sudoku-cell:nth-child(n+19):nth-child(-n+27),.sudoku-cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid var(--brand-primary)}.sudoku-board.sudoku-board-6{grid-template-columns:repeat(6,1fr)}.sudoku-board-6 .sudoku-cell:nth-child(9n){border-right:1px solid #b8cdd8}.sudoku-board-6 .sudoku-cell:nth-child(n+73){border-bottom:1px solid #b8cdd8}.sudoku-board-6 .sudoku-cell:nth-child(3n):not(:nth-child(9n)){border-right:1px solid #b8cdd8}.sudoku-board-6 .sudoku-cell:nth-child(n+19):nth-child(-n+27),.sudoku-board-6 .sudoku-cell:nth-child(n+46):nth-child(-n+54){border-bottom:1px solid #b8cdd8}.sudoku-board-6 .sudoku-cell:nth-child(6n){border-right:none}.sudoku-board-6 .sudoku-cell:nth-child(n+31){border-bottom:none}.sudoku-board-6 .sudoku-cell:nth-child(3n):not(:nth-child(6n)){border-right:2px solid var(--brand-primary)}.sudoku-board-6 .sudoku-cell:nth-child(n+7):nth-child(-n+12),.sudoku-board-6 .sudoku-cell:nth-child(n+19):nth-child(-n+24){border-bottom:2px solid var(--brand-primary)}.notes-grid{display:grid;grid-template-columns:repeat(3,1fr);width:100%;height:100%;padding:1px}.note-item{font-size:.65rem;color:var(--text-muted);display:flex;justify-content:center;align-items:center}.action-bar{display:flex;justify-content:space-around;padding:1rem 0}.icon-btn{background:transparent;border:none;cursor:pointer;color:var(--brand-primary);display:flex;flex-direction:column;align-items:center;gap:.25rem;position:relative}.icon-btn:disabled{color:#bdc3c7}.icon-badge{position:absolute;top:-8px;right:-8px;background-color:var(--brand-primary);color:#fff;font-size:.65rem;padding:2px 5px;border-radius:10px;font-weight:700;border:2px solid white}.note-toggle-badge{background:#eef2f7;padding:2px 8px;border-radius:10px;font-size:.65rem;font-weight:700;color:var(--brand-primary)}.note-toggle-badge.on{background:var(--brand-primary);color:#fff}.number-row{display:flex;justify-content:space-between;padding:.5rem 0}.number-btn{background:transparent;border:none;font-size:2.2rem;color:var(--brand-primary);cursor:pointer;flex:1;display:flex;justify-content:center;align-items:center;transition:transform .1s}.number-btn:active{transform:scale(.9)}.number-btn:disabled{color:#ecf0f1}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;justify-content:center;align-items:center;z-index:100;padding:1rem}.modal-content{background:#64748b;border-radius:16px;width:100%;max-width:360px;box-shadow:0 10px 25px #00000059;overflow:hidden}.modal-header{padding:1rem;text-align:center;border-bottom:1px solid rgba(255,255,255,.1)}.modal-header h2{margin:0;color:#fff;font-size:1.2rem;text-shadow:0 2px 4px rgba(0,0,0,.3)}.modal-body{background:#1e2d3d;margin:.75rem;border-radius:12px;padding:1.25rem;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.modal-footer{padding:.75rem;display:flex;flex-direction:row;gap:.5rem;align-items:center}.modal-home-btn{background:#ffffff26;border:none;border-radius:10px;width:48px;height:48px;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;flex-shrink:0}.modal-home-btn:hover{background:#ffffff40}.primary-btn{background:var(--brand-primary);color:#fff;border:none;padding:1rem 2rem;border-radius:8px;font-size:1.1rem;font-weight:600;cursor:pointer}.landing-page{display:flex;flex-direction:column;align-items:center;gap:2rem;padding-top:3rem;width:100%}.landing-header{text-align:center;margin-bottom:2rem}.landing-header h1{font-size:2.5rem;color:var(--brand-primary);margin:.5rem 0}.landing-header p{color:var(--text-muted);font-size:1.1rem}.game-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;width:100%}.game-card{background:#fff;border:1px solid #e1e8ed;border-radius:16px;padding:1.5rem;display:flex;gap:1.5rem;align-items:center;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 6px #0000000d}.game-card:hover{transform:translateY(-4px);box-shadow:0 12px 20px #0000001a;border-color:var(--brand-primary)}.game-card.coming-soon{opacity:.7;cursor:default;background:var(--bg-secondary)}.game-card.coming-soon:hover{transform:none;box-shadow:0 4px 6px #0000000d}.game-card-icon{background:var(--bg-secondary);color:var(--brand-primary);width:80px;height:80px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.game-card-content h3{margin:0 0 .5rem;font-size:1.3rem;color:var(--text-main)}.game-card-content p{margin:0;color:var(--text-muted);font-size:.95rem;line-height:1.4}.game-card-footer{margin-top:1rem}.play-now{color:var(--brand-primary);font-weight:600;display:flex;align-items:center;gap:.4rem;font-size:.9rem}.landing-footer{margin-top:3rem;color:var(--text-muted);font-size:.9rem}.back-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:0;margin-right:.5rem;display:flex;align-items:center;justify-content:center;transition:color .2s}.back-btn:hover{color:var(--brand-primary)}.mode-select-page{min-height:100vh;padding:2rem 1rem;max-width:800px;margin:0 auto}.mode-header{display:flex;align-items:center;gap:1rem;margin-bottom:3rem}.mode-header h1{font-size:2rem;font-weight:700;margin:0}.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.stage-mode-card{opacity:.8}.coming-soon-label{background:var(--bg-secondary);padding:.25rem .75rem;border-radius:1rem;font-size:.875rem;color:var(--text-secondary)}@keyframes board-entrance{0%{opacity:0;transform:scale(.5) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.sudoku-board.is-entering .animate-entrance{animation:board-entrance .5s cubic-bezier(.16,1,.3,1) both;animation-delay:calc((var(--row) + var(--col)) * .05s)}@keyframes mistake-flash{0%{background-color:#e74c3ccc;box-shadow:inset 0 0 25px #e74c3c66,0 0 15px #e74c3c4d;z-index:10}to{background-color:transparent;box-shadow:none;z-index:1}}.animate-mistake{animation:mistake-flash .6s cubic-bezier(.25,1,.5,1) forwards}@keyframes hint-reveal{0%{transform:scale(.5);opacity:0;background:#fff8e1;box-shadow:0 0 #f4c430b3}40%{transform:scale(1.25);opacity:1;background:#fff3cd;box-shadow:0 0 0 8px #f4c4304d}70%{transform:scale(.95);background:#fff8e1;box-shadow:0 0 0 4px #f4c4301a}to{transform:scale(1);background:"";box-shadow:none}}.animate-hint{animation:hint-reveal .7s cubic-bezier(.34,1.56,.64,1) 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#00000059;overflow:hidden}.hint-modal-icon{width:56px;height:56px;border-radius:16px;background:#fff8e126;display:flex;align-items:center;justify-content:center;margin-bottom:.25rem}.hint-modal-title{margin:0;font-size:1.15rem;font-weight:700;color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.hint-modal-desc{margin:0;font-size:.85rem;color:#ffffffa6}.hint-modal-coin-row{display:flex;align-items:center;justify-content:space-between;width:100%;padding:.65rem 1rem;background:#1e2d3d;font-size:.9rem;color:#94a3b8;box-sizing:border-box}.hint-modal-cost-row{margin-top:1px}.hint-modal-coin-value{font-weight:700;color:#e2e8f0;font-size:1rem}.hint-modal-error{margin:0;font-size:.82rem;color:#f87171;padding:.4rem 1rem 0}.hint-modal-btns{display:flex;gap:.5rem;width:100%;padding:.75rem;box-sizing:border-box}.hint-modal-btn-cancel{flex:1;padding:.85rem;border-radius:10px;border:none;background:#ffffff26;color:#fff;font-size:1rem;font-weight:600;cursor:pointer}.hint-modal-btn-confirm{flex:1;padding:.85rem;border-radius:10px;border:none;background:var(--brand-primary);color:#fff;font-size:1rem;font-weight:600;cursor:pointer}.hint-modal-btn-confirm:disabled{background:#fff3;color:#fff6;cursor:not-allowed}@keyframes premium-sweep{0%{filter:brightness(1);transform:scale(1);box-shadow:none}30%{filter:brightness(1.6);transform:scale(1.1);z-index:100;box-shadow:0 0 30px 5px rgba(var(--brand-primary-rgb),.6)}to{filter:brightness(1);transform:scale(1);box-shadow:none}}.animate-sweep-row{animation:premium-sweep .7s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--col-idx) * .04s)}.animate-sweep-col{animation:premium-sweep .7s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--row-idx) * .04s)}.animate-sweep-sector{animation:premium-sweep .7s cubic-bezier(.16,1,.3,1) both;animation-delay:calc((var(--inner-row) * 3 + var(--inner-col)) * .04s)}:root{--brand-primary-rgb: 52, 152, 219}.difficulty-select-page{min-height:100vh;padding:2rem 1rem;max-width:500px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}.game-card[data-difficulty=Easy] .game-card-icon{background-color:#e8f5e9;color:#2ecc71}.game-card[data-difficulty=Medium] .game-card-icon{background-color:#e3f2fd;color:#3498db}.game-card[data-difficulty=Hard] .game-card-icon{background-color:#fffde7;color:#f1c40f}.game-card[data-difficulty=Expert] .game-card-icon{background-color:#fff3e0;color:#e67e22}.game-card[data-difficulty=Master] .game-card-icon{background-color:#ffebee;color:#e74c3c}.game-card .game-card-footer{background:var(--bg-secondary);padding:.5rem .8rem;border-radius:8px;display:inline-block;margin-top:1rem}.game-card .play-now{color:var(--brand-primary);font-weight:600;display:flex;align-items:center;gap:.4rem;font-size:.9rem}.best-time{display:flex;align-items:center;gap:.5rem;font-size:.9rem;color:var(--text-muted);font-weight:500}.best-time svg{color:#f1c40f}@keyframes fade-in-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fade-in-up .5s ease-out both;animation-delay:var(--delay, 0s)}