@font-face{font-family:ZCOOL KuaiLe;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/ZCOOLKuaiLe-Regular.woff2) format("woff2")}@font-face{font-family:Nunito;font-style:normal;font-weight:400 900;font-display:swap;src:url(/fonts/Nunito-Variable.woff2) format("woff2")}:root{--primary: #7CB686;--primary-light: #B4D8BB;--primary-dark: #5A9A66;--primary-glow: rgba(124, 182, 134, .3);--secondary: #F4A97A;--secondary-light: #FCCDB3;--accent: #F7D26B;--accent-light: #FBEAAC;--sky: #A8D8EA;--sky-light: #D0ECFA;--lavender: #C5A3D9;--lavender-light: #E2D3ED;--bg: #FFF8EE;--bg-warm: #FFF3E0;--bg-pattern: #FEF0D8;--card: #FFFDF8;--card-hover: #FFF9F0;--text: #5D4E37;--text-light: #9B8B75;--text-muted: #C4B6A3;--border: #E8DDD0;--border-light: #F0E8DD;--danger: #E88B8B;--danger-light: #FADEDE;--success: #82C9A5;--success-light: #DFF0E7;--cell-bg: #FFFDF8;--cell-prefilled: #F5EFE3;--cell-selected: #D4EDDA;--cell-selected-border: #7CB686;--cell-error: #FADEDE;--cell-hinted: #DFF0E7;--cell-hover: #F5F0E8;--cell-related: #FFF5E6;--cell-same-value: #E5F5E8;--board-border: #C4A882;--board-thick: #A08060;--num-1: #E88B8B;--num-2: #F4A97A;--num-3: #D4A843;--num-4: #7CB686;--num-5: #6BAED6;--num-6: #B898CC;--num-btn-1: #F2A5A5;--num-btn-1-shadow: #D47878;--num-btn-2: #F4B892;--num-btn-2-shadow: #D49570;--num-btn-3: #F0D080;--num-btn-3-shadow: #C8A850;--num-btn-4: #8FC898;--num-btn-4-shadow: #5FA06A;--num-btn-5: #88C4E0;--num-btn-5-shadow: #5EA0C0;--num-btn-6: #C5A8D8;--num-btn-6-shadow: #9A7EB0;--radius: 16px;--radius-sm: 10px;--radius-lg: 24px;--radius-xl: 32px;--radius-full: 9999px;--shadow: 0 2px 12px rgba(93, 78, 55, .08);--shadow-md: 0 4px 20px rgba(93, 78, 55, .1);--shadow-lg: 0 8px 32px rgba(93, 78, 55, .12);--shadow-btn: 0 4px 0 var(--primary-dark);--shadow-inset: inset 0 2px 4px rgba(93, 78, 55, .08);--font-display: "ZCOOL KuaiLe", cursive, system-ui;--font-body: "Nunito", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;--font-mono: "SF Mono", "Menlo", monospace}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{font-family:var(--font-body);background:var(--bg);color:var(--text);min-height:100dvh;overscroll-behavior:none;user-select:none;-webkit-user-select:none;font-weight:600;line-height:1.5}#root{min-height:100dvh;display:flex;flex-direction:column;position:relative;overflow-x:hidden}button{border:none;cursor:pointer;font-family:var(--font-body);font-weight:700;touch-action:manipulation}input{font-family:var(--font-body);font-weight:600}.btn-primary{background:var(--primary);color:#fff;border-radius:var(--radius);font-size:1.15rem;font-weight:800;box-shadow:0 4px 0 var(--primary-dark),var(--shadow);transition:transform .1s,box-shadow .1s;letter-spacing:.5px}.btn-primary:active{transform:translateY(3px);box-shadow:0 1px 0 var(--primary-dark)}.btn-primary:disabled{opacity:.6;transform:none}.btn-secondary{background:var(--card);color:var(--text);border:2px solid var(--border);border-radius:var(--radius);font-size:1rem;font-weight:700}.btn-secondary:active{background:var(--bg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInScale{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes bounceIn{0%{transform:scale(0);opacity:0}50%{transform:scale(1.15)}70%{transform:scale(.95)}to{transform:scale(1);opacity:1}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes gentleBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}@keyframes wobble{0%,to{transform:rotate(0)}25%{transform:rotate(-3deg)}75%{transform:rotate(3deg)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-3px)}40%{transform:translate(3px)}60%{transform:translate(-2px)}80%{transform:translate(2px)}}@keyframes float{0%,to{transform:translateY(0) rotate(0)}25%{transform:translateY(-8px) rotate(2deg)}75%{transform:translateY(4px) rotate(-1deg)}}@keyframes floatSlow{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes sparkle{0%,to{opacity:0;transform:scale(0) rotate(0)}50%{opacity:1;transform:scale(1) rotate(180deg)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes popIn{0%{transform:scale(0) rotate(-10deg)}60%{transform:scale(1.2) rotate(3deg)}to{transform:scale(1) rotate(0)}}@keyframes wiggle{0%,to{transform:rotate(0)}20%{transform:rotate(8deg)}40%{transform:rotate(-6deg)}60%{transform:rotate(4deg)}80%{transform:rotate(-2deg)}}@keyframes confetti-fall{0%{transform:translateY(0) rotate(0) scale(0);opacity:1}40%{opacity:1;transform:translateY(-40vh) rotate(360deg) scale(1.2)}to{transform:translateY(-80vh) rotate(720deg) scale(.8);opacity:0}}@keyframes starPop{0%{transform:scale(0) rotate(-45deg);opacity:0}60%{transform:scale(1.3) rotate(10deg);opacity:1}to{transform:scale(1) rotate(0);opacity:1}}@keyframes cloudDrift{0%{transform:translate(-10px)}to{transform:translate(10px)}}@keyframes twinkle{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.2)}}.animate-fade-in{animation:fadeIn .4s ease-out}.animate-bounce-in{animation:bounceIn .5s cubic-bezier(.34,1.56,.64,1)}.animate-bounce{animation:bounce .4s ease-out}.animate-shake{animation:shake .35s ease-out}.animate-wobble{animation:wobble .5s ease-out}.animate-pop-in{animation:popIn .4s cubic-bezier(.34,1.56,.64,1)}.animate-float{animation:float 4s ease-in-out infinite}.page-title-display{font-family:var(--font-display);font-size:1.8rem;color:var(--text);text-align:center;line-height:1.3}.page-bg-decoration{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}.page-bg-decoration:before{content:"";position:absolute;top:-50px;right:-30px;width:200px;height:200px;background:radial-gradient(circle,var(--primary-glow) 0%,transparent 70%);border-radius:50%;animation:floatSlow 8s ease-in-out infinite}.page-bg-decoration:after{content:"";position:absolute;bottom:80px;left:-40px;width:160px;height:160px;background:radial-gradient(circle,rgba(244,169,122,.15) 0%,transparent 70%);border-radius:50%;animation:floatSlow 10s ease-in-out infinite 2s}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.loading-spinner{display:flex;align-items:center;justify-content:center;min-height:100dvh;flex-direction:column;gap:16px}.loading-spinner .loading-dots{display:flex;gap:8px}.loading-spinner .loading-dot{width:12px;height:12px;border-radius:50%;animation:bounce .6s ease-in-out infinite}.loading-spinner .loading-dot:nth-child(1){background:var(--primary);animation-delay:0s}.loading-spinner .loading-dot:nth-child(2){background:var(--secondary);animation-delay:.15s}.loading-spinner .loading-dot:nth-child(3){background:var(--accent);animation-delay:.3s}.nav-bar{position:fixed;bottom:0;left:0;right:0;z-index:50;padding:0 12px env(safe-area-inset-bottom,8px) 12px;background:linear-gradient(to top,var(--bg) 60%,transparent)}.nav-bar-inner{display:flex;max-width:400px;margin:0 auto;background:var(--card);border-radius:var(--radius-xl);padding:6px 8px;box-shadow:0 -2px #5d4e370a,0 4px 20px #5d4e371f;border:2px solid var(--border-light)}.nav-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0 6px;background:none;color:var(--text-muted);transition:color .25s,transform .15s;position:relative;border-radius:var(--radius)}.nav-tab:active{transform:scale(.92)}.nav-tab.active{color:var(--primary-dark)}.nav-icon{font-size:1.4rem;transition:transform .3s cubic-bezier(.34,1.56,.64,1);line-height:1}.nav-icon-active{transform:scale(1.15);animation:gentleBounce 2s ease-in-out infinite}.nav-label{font-size:.7rem;font-weight:800;letter-spacing:.3px}.nav-indicator{position:absolute;bottom:2px;width:20px;height:3px;background:var(--primary);border-radius:3px;animation:fadeInScale .25s ease-out}.mascot-container{display:flex;flex-direction:column;align-items:center;gap:4px}.mascot-character{animation:float 4s ease-in-out infinite;filter:drop-shadow(0 4px 8px rgba(93,78,55,.15))}.mascot-character svg{width:100%;height:100%}.mascot-happy{animation:float 4s ease-in-out infinite}.mascot-thinking{animation:float 5s ease-in-out infinite}.mascot-thinking svg{transform:rotate(-5deg)}.mascot-celebrating{animation:bounce .6s ease-in-out infinite}.mascot-waving{animation:wobble 1s ease-in-out infinite}.wing-up{animation:wiggle .6s ease-in-out infinite;transform-origin:center bottom}.celebrate-star{animation:twinkle .8s ease-in-out infinite}@keyframes twinkle{0%,to{opacity:.3;r:2}50%{opacity:1;r:3.5}}@keyframes wiggle{0%,to{transform:rotate(0)}25%{transform:rotate(8deg)}75%{transform:rotate(-8deg)}}.mascot-speech-bubble{position:relative;background:#fff;border-radius:20px;padding:8px 16px;font-size:.85rem;font-weight:700;color:var(--text);box-shadow:0 2px 8px #5d4e371a;max-width:200px;text-align:center;animation:fadeIn .3s ease-out}.mascot-speech-bubble:before{content:"";position:absolute;top:-8px;left:50%;transform:translate(-50%);width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-bottom:10px solid white}.home-page{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px 16px;position:relative;overflow:hidden;background:linear-gradient(170deg,#E8F5E9 0%,var(--bg) 35%,var(--bg-warm) 100%)}.home-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}.cloud{position:absolute;background:#fff;border-radius:50px;opacity:.5}.cloud:before,.cloud:after{content:"";position:absolute;background:#fff;border-radius:50%}.cloud-1{width:100px;height:32px;top:8%;left:10%;animation:cloudDrift 12s ease-in-out infinite alternate}.cloud-1:before{width:40px;height:40px;top:-20px;left:20px}.cloud-1:after{width:28px;height:28px;top:-14px;left:50px}.cloud-2{width:80px;height:26px;top:15%;right:15%;opacity:.35;animation:cloudDrift 15s ease-in-out infinite alternate-reverse}.cloud-2:before{width:32px;height:32px;top:-16px;left:15px}.cloud-2:after{width:22px;height:22px;top:-10px;left:42px}.cloud-3{width:60px;height:20px;top:22%;left:55%;opacity:.25;animation:cloudDrift 18s ease-in-out infinite alternate}.cloud-3:before{width:24px;height:24px;top:-12px;left:12px}.star{position:absolute;font-size:1.2rem;color:var(--accent);opacity:.4;animation:twinkle 3s ease-in-out infinite}.star-1{top:12%;left:80%;animation-delay:0s}.star-2{top:25%;left:5%;animation-delay:1s;font-size:.9rem}.star-3{top:5%;left:45%;animation-delay:2s;font-size:1rem}.star-4{top:30%;right:8%;animation-delay:.5s;font-size:.8rem}@keyframes twinkle{0%,to{opacity:.2;transform:scale(.8)}50%{opacity:.6;transform:scale(1.2)}}.home-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;width:100%;max-width:380px}.home-hero{text-align:center;margin-bottom:24px;animation:fadeIn .8s ease-out}.home-title{font-family:var(--font-display);font-size:2.2rem;color:var(--primary-dark);margin-top:8px;text-shadow:0 2px 4px rgba(124,182,134,.2);letter-spacing:2px}.home-subtitle{color:var(--text-light);font-size:.95rem;margin-top:4px;font-weight:600}.home-form{width:100%;display:flex;flex-direction:column;gap:14px;animation:slideUp .6s ease-out .3s backwards}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:.9rem;font-weight:700;color:var(--text);padding-left:4px}.form-input{padding:14px 16px;border:3px solid var(--border);border-radius:var(--radius);font-size:1.05rem;background:var(--card);color:var(--text);outline:none;transition:border-color .25s,box-shadow .25s,transform .15s;text-align:center;letter-spacing:2px;font-weight:700;box-shadow:var(--shadow-inset)}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-glow),var(--shadow-inset);transform:scale(1.02)}.form-input::placeholder{letter-spacing:0;color:var(--text-muted);font-weight:600}.form-error{color:var(--danger);font-size:.875rem;text-align:center;font-weight:700;animation:shake .35s ease-out}.home-btn{padding:16px;font-size:1.2rem;margin-top:4px;font-family:var(--font-display);letter-spacing:1px}.teacher-link{margin-top:20px;background:none;color:var(--text-light);font-size:.85rem;font-weight:600;opacity:.6;transition:opacity .2s;animation:fadeIn .8s ease-out .6s backwards}.teacher-link:active{opacity:1}.game-page{padding:16px 16px 80px;max-width:560px;margin:0 auto;min-height:100dvh;position:relative}.game-page-bg{position:fixed;inset:0;pointer-events:none;overflow:hidden}.bg-circle{position:absolute;border-radius:50%}.bg-circle-1{width:200px;height:200px;top:-60px;right:-40px;background:radial-gradient(circle,rgba(124,182,134,.15) 0%,transparent 70%);animation:floatSlow 10s ease-in-out infinite}.bg-circle-2{width:150px;height:150px;bottom:100px;left:-30px;background:radial-gradient(circle,rgba(244,169,122,.12) 0%,transparent 70%);animation:floatSlow 12s ease-in-out infinite 3s}.bg-circle-3{width:100px;height:100px;top:40%;right:10%;background:radial-gradient(circle,rgba(247,210,107,.1) 0%,transparent 70%);animation:floatSlow 8s ease-in-out infinite 1s}.game-page-content{position:relative;z-index:1}.game-page-header{display:flex;flex-direction:column;align-items:center;gap:4px;margin-bottom:20px;animation:fadeIn .5s ease-out}.game-page-title{font-family:var(--font-display);font-size:1.6rem;color:var(--text);text-align:center}.grid-section{margin-bottom:20px;animation:slideUp .5s ease-out backwards}.grid-header{display:flex;align-items:center;gap:10px;margin-bottom:10px;padding:0 4px}.grid-icon{font-size:1.6rem;animation:gentleBounce 2s ease-in-out infinite}.grid-header-text{display:flex;flex-direction:column}.grid-label{font-family:var(--font-display);font-size:1.3rem;color:var(--text);line-height:1.2}.grid-desc{font-size:.8rem;color:var(--text-light);font-weight:600}.adventure-cards{display:flex;gap:10px}.adventure-card{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px 8px 14px;background:var(--card);border:3px solid var(--border);border-radius:var(--radius-lg);transition:transform .2s cubic-bezier(.34,1.56,.64,1),border-color .2s,box-shadow .2s;animation:slideUp .4s ease-out backwards;position:relative;overflow:hidden}.adventure-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;border-radius:4px 4px 0 0}.adventure-card:active{transform:scale(.94)}.adventure-forest{border-color:#c8e6c9}.adventure-forest:before{background:linear-gradient(90deg,#81c784,#a5d6a7)}.adventure-forest:active{box-shadow:0 4px 16px #81c7844d;border-color:#81c784}.adventure-ocean{border-color:#b3e5fc}.adventure-ocean:before{background:linear-gradient(90deg,#4fc3f7,#81d4fa)}.adventure-ocean:active{box-shadow:0 4px 16px #4fc3f74d;border-color:#4fc3f7}.adventure-space{border-color:#e1bee7}.adventure-space:before{background:linear-gradient(90deg,#ce93d8,#e1bee7)}.adventure-space:active{box-shadow:0 4px 16px #ce93d84d;border-color:#ce93d8}.adventure-icon{font-size:2rem;animation:gentleBounce 3s ease-in-out infinite}.adventure-label{font-family:var(--font-display);font-size:1.05rem;color:var(--text)}.adventure-desc{font-size:.72rem;color:var(--text-light);font-weight:600}.board-wrapper{position:relative;padding:6px;border-radius:calc(var(--radius-lg) + 6px);background:linear-gradient(145deg,#d4be9e,#c4a882);box-shadow:0 6px #a08060,0 8px 20px #5d4e3733,inset 0 1px #ffffff4d}.sudoku-board{display:grid;gap:0;width:min(88vw,480px);aspect-ratio:1;background:var(--board-border);border-radius:var(--radius-lg);overflow:hidden;margin:0 auto}.sudoku-cell{display:flex;align-items:center;justify-content:center;background:var(--cell-bg);border:1.5px solid var(--border-light);cursor:pointer;transition:background .2s,transform .12s;position:relative;min-width:0;min-height:0}.sudoku-cell:active{transform:scale(.92)}.sudoku-cell.thick-right{border-right:3px solid var(--board-thick)}.sudoku-cell.thick-bottom{border-bottom:3px solid var(--board-thick)}.cell-value{font-family:var(--font-display);font-size:clamp(1.6rem,8vw,2.8rem);line-height:1;transition:transform .2s cubic-bezier(.34,1.56,.64,1)}.cell-value.user-input{animation:popIn .25s cubic-bezier(.34,1.56,.64,1)}.num-color-1{color:var(--num-1)}.num-color-2{color:var(--num-2)}.num-color-3{color:var(--num-3)}.num-color-4{color:var(--num-4)}.num-color-5{color:var(--num-5)}.num-color-6{color:var(--num-6)}.sudoku-cell.prefilled{background:var(--cell-prefilled)}.sudoku-cell.prefilled .cell-value{color:var(--text);font-weight:900}.sudoku-cell.selected{background:var(--cell-selected);box-shadow:inset 0 0 0 3px var(--cell-selected-border);z-index:1}.sudoku-cell.related{background:var(--cell-related)}.sudoku-cell.same-value{background:var(--cell-same-value)}.sudoku-cell.conflict{background:var(--cell-error)}.sudoku-cell.conflict .cell-value{color:var(--danger)}.sudoku-cell.hinted{background:var(--cell-hinted)}.sudoku-cell.hinted .cell-value{color:var(--success)}.number-pad{width:min(88vw,480px);margin:12px auto 0}.number-buttons{display:flex;gap:8px;justify-content:center}.num-btn{width:clamp(52px,13vw,72px);height:clamp(58px,14vw,78px);border-radius:var(--radius);color:#fff;font-size:clamp(1.3rem,5vw,2rem);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0px;transition:transform .12s,box-shadow .12s;position:relative;overflow:hidden}.num-btn:after{content:"";position:absolute;top:2px;left:10%;right:10%;height:35%;background:linear-gradient(to bottom,rgba(255,255,255,.35),transparent);border-radius:50%;pointer-events:none}.num-value{font-family:var(--font-display);line-height:1;position:relative;z-index:1;text-shadow:0 1px 2px rgba(0,0,0,.15)}.num-emoji{font-size:clamp(.6rem,2.5vw,.8rem);line-height:1;position:relative;z-index:1;opacity:.9}.num-btn-1{background:var(--num-btn-1);box-shadow:0 4px 0 var(--num-btn-1-shadow),0 6px 12px #0000001a}.num-btn-2{background:var(--num-btn-2);box-shadow:0 4px 0 var(--num-btn-2-shadow),0 6px 12px #0000001a}.num-btn-3{background:var(--num-btn-3);box-shadow:0 4px 0 var(--num-btn-3-shadow),0 6px 12px #0000001a}.num-btn-4{background:var(--num-btn-4);box-shadow:0 4px 0 var(--num-btn-4-shadow),0 6px 12px #0000001a}.num-btn-5{background:var(--num-btn-5);box-shadow:0 4px 0 var(--num-btn-5-shadow),0 6px 12px #0000001a}.num-btn-6{background:var(--num-btn-6);box-shadow:0 4px 0 var(--num-btn-6-shadow),0 6px 12px #0000001a}.num-btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 currentColor,0 2px 4px #0000001a}.num-btn-1:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-1-shadow)}.num-btn-2:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-2-shadow)}.num-btn-3:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-3-shadow)}.num-btn-4:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-4-shadow)}.num-btn-5:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-5-shadow)}.num-btn-6:active:not(:disabled){box-shadow:0 1px 0 var(--num-btn-6-shadow)}.num-btn:disabled{opacity:.4;transform:none}.action-buttons{display:flex;gap:10px;justify-content:center;margin-top:10px}.action-btn{display:flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-full);background:var(--card);color:var(--text);font-size:.95rem;font-weight:700;border:3px solid var(--border);transition:transform .15s,border-color .2s,background .2s;box-shadow:var(--shadow)}.action-btn:active:not(:disabled){transform:scale(.94)}.action-btn:disabled{opacity:.35}.action-icon{font-size:1.15rem}.action-label{font-weight:700}.erase-btn:active:not(:disabled){border-color:var(--danger);background:var(--danger-light)}.hint-btn:active:not(:disabled){border-color:var(--accent);background:var(--accent-light)}.timer{display:flex;align-items:center;gap:6px;padding:6px 14px;background:var(--card);border-radius:var(--radius-full);border:2px solid var(--border);box-shadow:var(--shadow)}.timer-clock{font-size:1rem;animation:pulse 2s ease-in-out infinite}.timer-value{font-family:var(--font-display);font-size:1.15rem;color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:1px}.celebration-overlay{position:fixed;inset:0;background:#5d4e3773;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:100;opacity:0;transition:opacity .4s;padding:20px}.celebration-overlay.visible{opacity:1}.confetti-container{position:fixed;inset:0;pointer-events:none;overflow:hidden}.confetti-piece{position:absolute;top:55%;animation:confetti-fall 2s ease-out forwards}.celebration-card{background:linear-gradient(160deg,#fffdf8,#fff8ee);border-radius:var(--radius-xl);padding:20px 20px 24px;text-align:center;box-shadow:0 8px #5d4e3714,0 16px 40px #5d4e3733;animation:bounceIn .6s cubic-bezier(.34,1.56,.64,1);max-width:340px;width:100%;position:relative;z-index:1;border:3px solid var(--border-light)}.celebration-mascot{margin-bottom:4px}.celebration-stars{font-size:2.2rem;margin-bottom:8px;display:flex;justify-content:center;gap:8px}.cele-star{display:inline-block;filter:grayscale(1) opacity(.2);transition:filter .3s,transform .3s}.cele-star.active{filter:none;animation:starPop .5s cubic-bezier(.34,1.56,.64,1) backwards}.celebration-title{font-family:var(--font-display);font-size:1.35rem;color:var(--text);margin-bottom:16px;line-height:1.4;animation:fadeIn .4s ease-out .5s backwards}.celebration-stats{display:flex;justify-content:center;align-items:center;gap:20px;margin-bottom:20px;padding:12px 16px;background:var(--bg);border-radius:var(--radius);animation:fadeIn .4s ease-out .6s backwards}.cele-stat{display:flex;flex-direction:column;align-items:center;gap:2px}.cele-stat-icon{font-size:1.2rem}.cele-stat-value{font-family:var(--font-display);font-size:1.4rem;color:var(--text)}.cele-stat-label{font-size:.75rem;color:var(--text-light);font-weight:700}.cele-stat-divider{width:2px;height:36px;background:var(--border);border-radius:1px}.celebration-actions{display:flex;flex-direction:column;gap:10px;animation:fadeIn .4s ease-out .7s backwards}.celebration-btn{width:100%;padding:14px;border-radius:var(--radius);font-size:1.1rem}.play-again-btn{font-family:var(--font-display);font-size:1.2rem;letter-spacing:.5px}.gameplay-page{padding:8px 12px 16px;max-width:560px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;position:relative}.gameplay-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;animation:fadeIn .3s ease-out}.back-btn{display:flex;align-items:center;gap:4px;background:var(--card);color:var(--text);font-size:.9rem;font-weight:700;padding:6px 12px;border-radius:var(--radius-full);border:2px solid var(--border);transition:transform .15s}.back-btn:active{transform:scale(.94)}.back-arrow{font-size:1.1rem}.back-text{font-size:.85rem}.gameplay-info{display:flex;gap:6px}.gameplay-badge{font-size:.78rem;font-weight:800;padding:4px 10px;border-radius:var(--radius-full);line-height:1.3}.badge-grid{background:var(--primary-light);color:var(--primary-dark)}.badge-diff{background:var(--accent-light);color:#8b6914}.gameplay-mascot{display:flex;justify-content:center;margin-bottom:4px;animation:slideDown .4s ease-out}.gameplay-board{flex:1;display:flex;align-items:center;justify-content:center;padding:2px 0;animation:fadeInScale .4s ease-out}.leaderboard-page{padding:16px 16px 80px;max-width:560px;margin:0 auto}.lb-header{text-align:center;margin-bottom:16px;animation:fadeIn .4s ease-out}.lb-title{font-family:var(--font-display);font-size:1.6rem;color:var(--text)}.lb-class{font-size:.82rem;color:var(--text-light);margin-top:2px;font-weight:600}.period-tabs{display:flex;gap:0;background:var(--card);border-radius:var(--radius-full);padding:4px;margin-bottom:16px;border:2px solid var(--border);animation:fadeIn .4s ease-out .1s backwards}.period-tab{flex:1;padding:8px 4px;border-radius:var(--radius-full);background:transparent;color:var(--text-light);font-size:.85rem;font-weight:700;transition:background .25s,color .25s,transform .15s;display:flex;align-items:center;justify-content:center;gap:4px}.period-tab.active{background:var(--primary);color:#fff;box-shadow:0 2px 8px var(--primary-glow)}.period-tab:active{transform:scale(.96)}.period-icon{font-size:.9rem}.lb-loading{display:flex;justify-content:center;padding:40px}.lb-empty{text-align:center;padding:40px 16px;animation:fadeIn .4s ease-out}.lb-empty-icon{font-size:3rem;display:block;margin-bottom:12px;animation:float 4s ease-in-out infinite}.lb-empty-text{font-family:var(--font-display);font-size:1.1rem;color:var(--text);margin-bottom:4px}.lb-empty-hint{font-size:.85rem;color:var(--text-light)}.rankings-list{display:flex;flex-direction:column;gap:8px}.rank-item{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--card);border-radius:var(--radius);border:2px solid transparent;transition:transform .15s;animation:slideUp .4s ease-out backwards}.rank-item:active{transform:scale(.98)}.rank-item.is-me{border-color:var(--primary-light);background:linear-gradient(135deg,#f0faf2,#e8f5e9)}.rank-item.rank-gold{background:linear-gradient(135deg,#fffde7,#fff8e1);border-color:#ffe082;box-shadow:0 3px 12px #ffc10726}.rank-item.rank-silver{background:linear-gradient(135deg,#fafafa,#f5f5f5);border-color:#e0e0e0;box-shadow:0 3px 12px #0000000f}.rank-item.rank-bronze{background:linear-gradient(135deg,#fff3e0,#ffe0b2);border-color:#ffcc80;box-shadow:0 3px 12px #ff98001a}.rank-position{width:36px;text-align:center;flex-shrink:0}.rank-medal{font-size:1.5rem}.rank-number{font-family:var(--font-display);font-size:1.1rem;color:var(--text-light)}.rank-avatar{width:40px;height:40px;flex-shrink:0}.avatar-img{width:100%;height:100%;border-radius:50%;object-fit:cover;border:2px solid var(--border-light)}.avatar-placeholder{width:100%;height:100%;border-radius:50%;background:linear-gradient(135deg,var(--primary-light),var(--sky-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;font-family:var(--font-display)}.rank-info{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.rank-name{font-weight:700;font-size:.95rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;align-items:center;gap:6px}.me-tag{font-size:.65rem;background:var(--primary);color:#fff;padding:1px 6px;border-radius:var(--radius-full);font-weight:800}.rank-games{font-size:.75rem;color:var(--text-light)}.rank-score{display:flex;align-items:baseline;gap:2px;min-width:50px;justify-content:flex-end}.rank-score-value{font-family:var(--font-display);font-size:1.2rem;color:var(--primary-dark)}.rank-score-label{font-size:.7rem;color:var(--text-light);font-weight:700}.profile-page{padding:16px 16px 80px;max-width:560px;margin:0 auto;position:relative}.profile-bg-deco{position:fixed;inset:0;pointer-events:none;overflow:hidden}.profile-bg-circle{position:absolute;top:-80px;right:-60px;width:250px;height:250px;background:radial-gradient(circle,rgba(124,182,134,.12) 0%,transparent 70%);border-radius:50%}.profile-card{background:var(--card);border-radius:var(--radius-xl);padding:24px 20px;text-align:center;box-shadow:0 4px #5d4e370f,var(--shadow-md);margin-bottom:16px;border:2px solid var(--border-light);position:relative;z-index:1}.profile-card-header{margin-bottom:16px}.profile-avatar-section{position:relative;display:inline-block;cursor:pointer;margin-bottom:10px}.profile-avatar-img{width:80px;height:80px;border-radius:50%;object-fit:cover;border:4px solid var(--primary-light);box-shadow:0 4px 12px var(--primary-glow)}.profile-avatar-placeholder{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:2rem;box-shadow:0 4px 12px var(--primary-glow)}.avatar-edit-badge{position:absolute;bottom:-2px;right:-2px;width:28px;height:28px;border-radius:50%;background:var(--card);border:2px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.8rem;box-shadow:var(--shadow)}.profile-name{font-family:var(--font-display);font-size:1.4rem;color:var(--text);margin-bottom:2px}.profile-class{font-size:.85rem;color:var(--text-light);font-weight:600}.profile-stats{display:flex;justify-content:center;align-items:center;gap:24px;padding:16px;background:var(--bg);border-radius:var(--radius)}.profile-stat{display:flex;flex-direction:column;align-items:center;gap:4px}.profile-stat-icon{font-size:1.3rem}.profile-stat-value{font-family:var(--font-display);font-size:1.4rem;color:var(--text)}.profile-stat-label{font-size:.75rem;color:var(--text-light);font-weight:700}.stat-divider{width:2px;height:40px;background:var(--border);border-radius:1px}.profile-section{margin-bottom:16px;position:relative;z-index:1}.section-title{font-family:var(--font-display);font-size:1rem;color:var(--text);margin-bottom:8px;padding-left:4px}.info-card{background:var(--card);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);border:2px solid var(--border-light)}.info-row{display:flex;justify-content:space-between;align-items:center}.info-label{color:var(--text-light);font-size:.9rem;font-weight:600}.info-code{font-family:var(--font-display);font-size:1.4rem;color:var(--primary-dark);letter-spacing:4px}.info-hint{font-size:.78rem;color:var(--text-light);margin-top:8px;font-weight:600}.profile-mascot{display:flex;justify-content:center;margin-bottom:20px;position:relative;z-index:1}.logout-btn{width:100%;padding:14px;background:var(--card);color:var(--danger);border:2px solid var(--danger-light);border-radius:var(--radius);font-size:.95rem;font-weight:700;transition:background .2s,transform .15s;position:relative;z-index:1}.logout-btn:active{background:var(--danger-light);transform:scale(.98)}.teacher-page{padding:16px 16px 32px;max-width:560px;margin:0 auto}.teacher-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.logout-link{background:none;color:var(--danger);font-size:.875rem;font-weight:600}.teacher-greeting{color:var(--text-light);margin-bottom:16px}.create-class-section{margin-bottom:20px}.create-form{display:flex;gap:8px}.create-form .form-input{flex:1;text-align:left;letter-spacing:0}.create-btn{padding:12px 16px;border-radius:var(--radius);white-space:nowrap;font-size:1rem}.create-btn:disabled{opacity:.5}.classes-section{margin-bottom:20px}.class-list{display:flex;flex-direction:column;gap:10px}.class-card{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow)}.class-card-name{font-size:1.1rem;font-weight:700;margin-bottom:4px}.class-meta{font-size:.8rem;color:var(--text-light)}.class-code-badge{display:flex;flex-direction:column;align-items:center;gap:2px;background:var(--bg);padding:8px 12px;border-radius:var(--radius-sm)}.code-label{font-size:.625rem;color:var(--text-light);text-transform:uppercase}.code-value{font-size:1.1rem;font-weight:700;font-family:monospace;color:var(--primary);letter-spacing:2px}.admin-login-page{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:20px;background:var(--bg)}.admin-login-card{width:100%;max-width:380px;background:var(--card);border-radius:var(--radius-lg);padding:32px 24px;box-shadow:var(--shadow-md);border:2px solid var(--border-light);animation:fadeIn .4s ease-out}.admin-login-header{text-align:center;margin-bottom:24px}.admin-icon{font-size:2.5rem;display:block;margin-bottom:8px}.admin-login-header h1{font-family:var(--font-display);font-size:1.6rem;color:var(--text)}.admin-input{width:100%;padding:14px 16px;border:3px solid var(--border);border-radius:var(--radius);font-size:1.05rem;background:var(--bg);color:var(--text);outline:none;text-align:center;font-weight:700;letter-spacing:4px;transition:border-color .2s;box-shadow:var(--shadow-inset)}.admin-input:focus{border-color:var(--primary)}.admin-error{color:var(--danger);font-size:.85rem;text-align:center;margin-top:10px;font-weight:700}.admin-submit{width:100%;padding:14px;margin-top:16px;font-size:1.1rem}.admin-back{display:block;width:100%;margin-top:16px;background:none;color:var(--text-light);font-size:.85rem;font-weight:600;text-align:center}.admin-page{min-height:100dvh;background:var(--bg);max-width:800px;margin:0 auto;padding:16px}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.admin-title{font-family:var(--font-display);font-size:1.4rem;color:var(--text)}.admin-logout{background:none;color:var(--danger);font-size:.9rem;font-weight:700}.admin-tabs{display:flex;gap:0;background:var(--card);border-radius:var(--radius);padding:4px;margin-bottom:16px;border:2px solid var(--border-light);overflow-x:auto;-webkit-overflow-scrolling:touch}.admin-tab{flex:1;padding:8px 6px;border-radius:var(--radius-sm);background:transparent;color:var(--text-light);font-size:.78rem;font-weight:700;white-space:nowrap;transition:background .2s,color .2s}.admin-tab.active{background:var(--primary);color:#fff}.admin-loading{text-align:center;color:var(--text-light);padding:40px;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.stat-card{background:var(--card);border-radius:var(--radius);padding:16px 12px;text-align:center;display:flex;flex-direction:column;gap:4px;border:2px solid var(--border-light);animation:fadeIn .3s ease-out backwards}.stat-card:nth-child(2){animation-delay:.05s}.stat-card:nth-child(3){animation-delay:.1s}.stat-card:nth-child(4){animation-delay:.15s}.stat-card:nth-child(5){animation-delay:.2s}.stat-card:nth-child(6){animation-delay:.25s}.stat-card.highlight{border-color:var(--primary-light);background:linear-gradient(135deg,#F0FAF2,var(--card))}.stat-card-icon{font-size:1.3rem}.stat-card-value{font-family:var(--font-display);font-size:1.6rem;color:var(--text)}.stat-card-label{font-size:.75rem;color:var(--text-light);font-weight:700}.admin-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius);border:2px solid var(--border-light);background:var(--card);animation:fadeIn .3s ease-out}.admin-table{width:100%;border-collapse:collapse;font-size:.85rem}.admin-table th{background:var(--bg);padding:10px 12px;text-align:left;font-weight:800;color:var(--text-light);font-size:.78rem;text-transform:uppercase;letter-spacing:.5px;white-space:nowrap;border-bottom:2px solid var(--border)}.admin-table td{padding:10px 12px;border-bottom:1px solid var(--border-light);color:var(--text);font-weight:600}.admin-table tbody tr:last-child td{border-bottom:none}.td-name{font-weight:800}.td-code{font-family:var(--font-mono);font-size:.85rem;color:var(--primary-dark);letter-spacing:2px;font-weight:800}.td-score{font-family:var(--font-display);color:var(--primary-dark)}.td-time{color:var(--text-light);font-size:.8rem}.td-empty{text-align:center;color:var(--text-muted);padding:32px 12px!important}.status-badge{display:inline-block;padding:2px 8px;border-radius:var(--radius-full);font-size:.72rem;font-weight:800}.status-badge.completed{background:var(--success-light);color:#2e7d4f}.status-badge.ongoing{background:var(--accent-light);color:#8b6914}@media(max-width:480px){.stats-grid{grid-template-columns:repeat(2,1fr)}}