@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=M+PLUS+Rounded+1c:wght@500;700;800;900&display=swap";
:root{--color-primary:#58cc02;--color-primary-dark:#46a302;--color-primary-light:#d7ffb8;--color-red:#ff4b4b;--color-red-light:#ffe1e1;--color-red-dark:#d92e2e;--color-orange:#ff9600;--color-orange-light:#ffe8cc;--color-yellow:#ffc800;--color-yellow-light:#fff4cc;--color-yellow-dark:#e0a800;--color-green:#58cc02;--color-green-light:#d7ffb8;--color-green-dark:#46a302;--color-blue:#1cb0f6;--color-blue-light:#ddf4ff;--color-blue-dark:#1899d6;--color-purple:#ce82ff;--color-purple-light:#f3dfff;--color-pink:#f06595;--color-pink-light:#ffe0ec;--color-bg:#fff;--color-bg-soft:#f7f7f7;--color-bg-card:#fff;--color-text:#4b4b4b;--color-text-light:#777;--color-text-muted:#afafaf;--color-border:#e5e5e5;--color-border-soft:#eee;--color-success:#58cc02;--color-error:#ff4b4b;--color-warning:#ff9600;--radius-sm:10px;--radius-md:14px;--radius-lg:18px;--radius-xl:24px;--radius-full:9999px;--shadow-sm:0 2px 8px #0000000f;--shadow-md:0 4px 16px #0000001a;--shadow-lg:0 8px 32px #0000001f;--shadow-pop:0 6px 0px #0000001a;--shadow-pop-active:0 2px 0px #0000001a;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{background-color:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Nunito,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.app-container{max-width:1200px;padding:0 var(--space-lg);margin:0 auto}.header{background:linear-gradient(135deg, var(--color-blue), var(--color-purple));padding:var(--space-md) var(--space-lg);z-index:100;box-shadow:var(--shadow-md);position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.header-logo{align-items:center;gap:var(--space-sm);color:#fff;cursor:pointer;font-size:1.5rem;font-weight:900;transition:transform .2s;display:flex}.header-logo:hover{transform:scale(1.05)}.header-logo-emoji{font-size:2rem;animation:2s infinite bounce}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.header-user{align-items:center;gap:var(--space-md);color:#fff;display:flex}.header-username{font-size:1rem;font-weight:700}.btn-logout{color:#fff;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-full);cursor:pointer;background:#fff3;border:2px solid #fff6;font-family:Nunito,sans-serif;font-size:.9rem;font-weight:700;transition:all .2s}.btn-logout:hover{background:#ffffff4d;transform:scale(1.05)}.dashboard{padding:var(--space-2xl) 0}.dashboard-greeting{text-align:center;margin-bottom:var(--space-3xl)}.dashboard-greeting h1{background:linear-gradient(135deg, var(--color-blue), var(--color-purple));-webkit-text-fill-color:transparent;margin-bottom:var(--space-sm);-webkit-background-clip:text;background-clip:text;font-size:2.5rem;font-weight:900}.dashboard-greeting p{color:var(--color-text-light);font-size:1.2rem;font-weight:600}.feature-grid{gap:var(--space-xl);padding:0 var(--space-md);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));display:grid}.feature-card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-md), var(--shadow-pop);cursor:pointer;border:3px solid #0000;transition:all .3s cubic-bezier(.34,1.56,.64,1);position:relative;overflow:hidden}.feature-card:before{content:"";height:6px;position:absolute;top:0;left:0;right:0}.feature-card--upload:before{background:linear-gradient(90deg, var(--color-red), var(--color-orange))}.feature-card--generate:before{background:linear-gradient(90deg, var(--color-blue), var(--color-green))}.feature-card--practice:before{background:linear-gradient(90deg, var(--color-purple), var(--color-pink))}.feature-card:hover{box-shadow:var(--shadow-lg);border-color:var(--color-blue-light);transform:translateY(-8px)}.feature-card:active{box-shadow:var(--shadow-sm), var(--shadow-pop-active);transform:translateY(-2px)}.feature-card-emoji{margin-bottom:var(--space-md);font-size:3.5rem;display:block}.feature-card h2{margin-bottom:var(--space-sm);color:var(--color-text);font-size:1.5rem;font-weight:800}.feature-card p{color:var(--color-text-light);font-size:1rem;font-weight:600;line-height:1.5}.pop-btn{justify-content:center;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);border-radius:var(--radius-full);cursor:pointer;box-shadow:var(--shadow-pop);border:none;min-height:52px;font-family:Nunito,sans-serif;font-size:1.1rem;font-weight:800;text-decoration:none;transition:all .2s cubic-bezier(.34,1.56,.64,1);display:inline-flex;position:relative;overflow:hidden}.pop-btn:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)scale(1.02)}.pop-btn:active{box-shadow:var(--shadow-pop-active);transform:translateY(1px)}.pop-btn:disabled{opacity:.6;cursor:not-allowed;box-shadow:none;transform:none}.pop-btn--red{background:linear-gradient(135deg, var(--color-red), #ff8787);color:#fff}.pop-btn--orange{background:linear-gradient(135deg, var(--color-orange), #ffc078);color:#fff}.pop-btn--yellow{background:linear-gradient(135deg, var(--color-yellow), #ffe066);color:var(--color-text)}.pop-btn--green{background:linear-gradient(135deg, var(--color-green), #69db7c);color:#fff}.pop-btn--blue{background:linear-gradient(135deg, var(--color-blue), #74c0fc);color:#fff}.pop-btn--purple{background:linear-gradient(135deg, var(--color-purple), #e599f7);color:#fff}.pop-btn--pink{background:linear-gradient(135deg, var(--color-pink), #faa2c1);color:#fff}.pop-btn--gray{color:#fff;background:linear-gradient(135deg,#868e96,#adb5bd)}.pop-btn--white{color:var(--color-text);border:2px solid var(--color-border);background:#fff}.pop-btn--lg{padding:var(--space-lg) var(--space-2xl);min-height:60px;font-size:1.3rem}.pop-btn--sm{padding:var(--space-sm) var(--space-md);min-height:40px;font-size:.9rem}.pop-btn--full{width:100%}.card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-md);border:2px solid var(--color-border)}.card--hover:hover{box-shadow:var(--shadow-lg);border-color:var(--color-blue-light);transition:all .3s;transform:translateY(-4px)}.page-header{text-align:center;padding:var(--space-2xl) 0 var(--space-xl)}.page-header h1{margin-bottom:var(--space-sm);font-size:2rem;font-weight:900}.page-header p{color:var(--color-text-light);font-size:1.1rem;font-weight:600}.page-header-emoji{margin-bottom:var(--space-md);font-size:3rem;display:block}.upload-area{border:4px dashed var(--color-blue);border-radius:var(--radius-lg);padding:var(--space-3xl);text-align:center;cursor:pointer;background:var(--color-blue-light);transition:all .3s;position:relative}.upload-area:hover{border-color:var(--color-purple);background:var(--color-purple-light);transform:scale(1.01)}.upload-area--active{border-color:var(--color-green);background:var(--color-green-light);border-style:solid}.upload-area-emoji{margin-bottom:var(--space-md);font-size:4rem;display:block}.upload-area h3{margin-bottom:var(--space-sm);color:var(--color-text);font-size:1.3rem;font-weight:800}.upload-area p{color:var(--color-text-light);font-weight:600}.upload-area input[type=file]{opacity:0;cursor:pointer;position:absolute;inset:0}.select-group{margin-bottom:var(--space-lg)}.select-group label{margin-bottom:var(--space-sm);font-size:1.1rem;font-weight:700;display:block}.select-field{width:100%;padding:var(--space-md);border:3px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);cursor:pointer;appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23636E72' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") right 12px center no-repeat;padding-right:48px;font-family:Nunito,sans-serif;font-size:1.1rem;font-weight:700;transition:border-color .2s}.select-field:focus{border-color:var(--color-blue);box-shadow:0 0 0 4px var(--color-blue-light);outline:none}.image-preview{border-radius:var(--radius-md);border:3px solid var(--color-border);max-height:400px;position:relative;overflow:hidden}.image-preview img{object-fit:contain;width:100%;height:auto;max-height:400px}.image-preview-remove{top:var(--space-sm);right:var(--space-sm);background:var(--color-red);color:#fff;cursor:pointer;width:36px;height:36px;box-shadow:var(--shadow-sm);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;display:flex;position:absolute}.score-display{text-align:center;padding:var(--space-xl)}.score-circle{width:180px;height:180px;margin:0 auto var(--space-lg);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;animation:.6s cubic-bezier(.34,1.56,.64,1) scorePopIn;display:flex;position:relative}@keyframes scorePopIn{0%{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}.score-circle--perfect{background:linear-gradient(135deg, var(--color-yellow), var(--color-orange));box-shadow:0 0 40px #ffd93d80}.score-circle--great{background:linear-gradient(135deg, var(--color-green), #69db7c);box-shadow:0 0 40px #51cf6666}.score-circle--good{background:linear-gradient(135deg, var(--color-blue), #74c0fc);box-shadow:0 0 40px #339af066}.score-circle--try-again{background:linear-gradient(135deg, var(--color-orange), #ffc078);box-shadow:0 0 40px #ffa94d66}.score-circle--boom{background:linear-gradient(135deg, var(--color-red), #ff922b);animation:.7s cubic-bezier(.34,1.56,.64,1) explosionBurst;box-shadow:0 0 50px #ff6b6b8c}.score-value{color:#fff;font-size:3.5rem;font-weight:900;line-height:1}.score-label{color:#ffffffe6;margin-top:4px;font-size:1rem;font-weight:700}.score-message{margin-bottom:var(--space-sm);font-size:1.5rem;font-weight:800}.score-detail{color:var(--color-text-light);font-size:1.1rem;font-weight:600}.grading-results{gap:var(--space-md);margin-top:var(--space-xl);flex-direction:column;display:flex}.grading-item{align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);border:2px solid var(--color-border);background:#fff;transition:all .2s;display:flex}.grading-item:hover{box-shadow:var(--shadow-sm)}.grading-item--correct{border-color:var(--color-green-light);background:var(--color-green-light)}.grading-item--incorrect{border-color:var(--color-red-light);background:var(--color-red-light)}.grading-item-icon{flex-shrink:0;font-size:1.8rem}.grading-item-content{flex:1}.grading-item-question{font-size:1.05rem;font-weight:700}.grading-item-answer{color:var(--color-text-light);margin-top:2px;font-size:.95rem}.grading-item-correct-answer{color:var(--color-green);margin-top:2px;font-size:.95rem;font-weight:700}.worksheet-grid{gap:var(--space-lg);grid-template-columns:repeat(auto-fill,minmax(280px,1fr));display:grid}.worksheet-card{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:2px solid var(--color-border);cursor:pointer;background:#fff;transition:all .3s;overflow:hidden}.worksheet-card:hover{box-shadow:var(--shadow-lg);border-color:var(--color-blue);transform:translateY(-4px)}.worksheet-card-image{object-fit:cover;background:var(--color-bg);width:100%;height:180px}.worksheet-card-body{padding:var(--space-md)}.worksheet-card-title{margin-bottom:var(--space-xs);font-size:1.1rem;font-weight:800}.worksheet-card-meta{align-items:center;gap:var(--space-sm);color:var(--color-text-light);font-size:.9rem;font-weight:600;display:flex}.worksheet-card-score{border-radius:var(--radius-full);align-items:center;gap:4px;padding:2px 10px;font-size:.85rem;font-weight:800;display:inline-flex}.worksheet-card-score--high{background:var(--color-green-light);color:#2b8a3e}.worksheet-card-score--mid{background:var(--color-yellow-light);color:#e67700}.worksheet-card-score--low{background:var(--color-red-light);color:#c92a2a}.practice-container{max-width:700px;margin:0 auto}.practice-progress{align-items:center;gap:var(--space-sm);margin-bottom:var(--space-lg);display:flex}.practice-progress-bar{background:var(--color-border);border-radius:var(--radius-full);flex:1;height:12px;overflow:hidden}.practice-progress-fill{background:linear-gradient(90deg, var(--color-blue), var(--color-purple));border-radius:var(--radius-full);height:100%;transition:width .5s cubic-bezier(.34,1.56,.64,1)}.practice-progress-text{color:var(--color-text-light);white-space:nowrap;font-weight:700}.question-card{border-radius:var(--radius-lg);padding:var(--space-2xl);box-shadow:var(--shadow-md);border:3px solid var(--color-border);margin-bottom:var(--space-lg);background:#fff;animation:.4s ease-out slideIn}@keyframes slideIn{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}.question-number{background:linear-gradient(135deg, var(--color-blue), var(--color-purple));color:#fff;padding:var(--space-xs) var(--space-md);border-radius:var(--radius-full);margin-bottom:var(--space-md);font-size:.9rem;font-weight:800;display:inline-block}.question-text{margin-bottom:var(--space-lg);font-size:1.4rem;font-weight:700;line-height:1.5}.answer-input{width:100%;padding:var(--space-md) var(--space-lg);border:3px solid var(--color-border);border-radius:var(--radius-md);text-align:center;font-family:Nunito,sans-serif;font-size:1.3rem;font-weight:700;transition:border-color .2s}.answer-input:focus{border-color:var(--color-blue);box-shadow:0 0 0 4px var(--color-blue-light);outline:none}.answer-input--correct{border-color:var(--color-green);background:var(--color-green-light)}.answer-input--incorrect{border-color:var(--color-red);background:var(--color-red-light)}.feedback-popup{z-index:1000;animation:.4s cubic-bezier(.34,1.56,.64,1) forwards popIn;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%)scale(0)}@keyframes popIn{to{transform:translate(-50%,-50%)scale(1)}}.feedback-popup-content{border-radius:var(--radius-xl);padding:var(--space-2xl);text-align:center;background:#fff;min-width:300px;box-shadow:0 20px 60px #0000004d}.feedback-popup-emoji{font-size:5rem;animation:.6s ease-out celebrateJump}@keyframes celebrateJump{0%{transform:translateY(0)}50%{transform:translateY(-20px)}to{transform:translateY(0)}}.feedback-popup-overlay{z-index:999;background:#0006;position:fixed;inset:0}.answer-mark{z-index:1500;pointer-events:none;justify-content:center;align-items:center;animation:.45s cubic-bezier(.34,1.56,.64,1) forwards answerMarkPop,.3s ease-in 1s forwards answerMarkFade;display:flex;position:fixed;inset:0;transform:scale(0)}.answer-mark span{filter:drop-shadow(0 12px 16px #00000038);font-size:clamp(9rem,40vw,22rem);line-height:1;animation:.6s ease-out celebrateJump}.answer-mark--correct{background:#51cf661f}.answer-mark--incorrect{background:#ff6b6b1f}@keyframes answerMarkPop{to{transform:scale(1)}}@keyframes answerMarkFade{to{opacity:0;visibility:hidden}}.loading-container{padding:var(--space-3xl);justify-content:center;align-items:center;gap:var(--space-lg);flex-direction:column;display:flex}.loading-spinner{border:5px solid var(--color-border);border-top-color:var(--color-blue);border-radius:50%;width:60px;height:60px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--color-text-light);font-size:1.2rem;font-weight:700;animation:1.5s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.generate-options{gap:var(--space-md);margin-bottom:var(--space-lg);flex-wrap:wrap;display:flex}.difficulty-btn{padding:var(--space-sm) var(--space-lg);border:3px solid var(--color-border);border-radius:var(--radius-full);cursor:pointer;background:#fff;font-family:Nunito,sans-serif;font-size:1rem;font-weight:700;transition:all .2s}.difficulty-btn:hover{border-color:var(--color-blue);background:var(--color-blue-light)}.difficulty-btn--active{background:var(--color-blue);color:#fff;border-color:var(--color-blue)}.pdf-preview{border-radius:var(--radius-lg);padding:var(--space-xl);box-shadow:var(--shadow-md);border:2px solid var(--color-border);background:#fff}.pdf-preview h3{margin-bottom:var(--space-lg);text-align:center;font-size:1.3rem;font-weight:800}.pdf-question-list{gap:var(--space-md);flex-direction:column;display:flex}.pdf-question-item{gap:var(--space-md);padding:var(--space-md);background:var(--color-bg);border-radius:var(--radius-md);display:flex}.pdf-question-num{background:var(--color-blue);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:.95rem;font-weight:800;display:flex}.pdf-question-text{padding-top:4px;font-size:1.1rem;font-weight:600;line-height:1.5}.auth-container{min-height:100vh;padding:var(--space-lg);justify-content:center;align-items:center;gap:var(--space-lg);background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);flex-direction:column;display:flex}.auth-container .site-footer{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:var(--radius-lg);background:#ffffffe6;width:100%;margin-top:auto}.auth-card{border-radius:var(--radius-xl);padding:var(--space-2xl);width:100%;max-width:420px;box-shadow:var(--shadow-lg);background:#fff}.auth-card h1{text-align:center;margin-bottom:var(--space-lg);font-size:1.8rem}.auth-form{gap:var(--space-md);flex-direction:column;display:flex}.form-group label{margin-bottom:var(--space-xs);font-weight:700;display:block}.form-input{width:100%;padding:var(--space-md);border:3px solid var(--color-border);border-radius:var(--radius-md);font-family:Nunito,sans-serif;font-size:1rem;font-weight:600;transition:border-color .2s}.form-input:focus{border-color:var(--color-blue);box-shadow:0 0 0 4px var(--color-blue-light);outline:none}.auth-link{text-align:center;margin-top:var(--space-md);color:var(--color-text-light);font-weight:600}.auth-link a{color:var(--color-blue);font-weight:700}.auth-error{background:var(--color-red-light);color:#c92a2a;padding:var(--space-md);border-radius:var(--radius-md);text-align:center;font-weight:700}.empty-state{text-align:center;padding:var(--space-3xl)}.empty-state-emoji{margin-bottom:var(--space-md);font-size:4rem;display:block}.empty-state h3{margin-bottom:var(--space-sm);font-size:1.3rem;font-weight:800}.empty-state p{color:var(--color-text-light);font-weight:600}.confetti-container{pointer-events:none;z-index:2000;width:100%;height:100%;position:fixed;top:0;left:0;overflow:hidden}.confetti-piece{width:12px;height:12px;animation:3s ease-out forwards confettiFall;position:absolute;top:-20px}@keyframes confettiFall{0%{opacity:1;transform:translateY(0)rotate(0)}to{opacity:0;transform:translateY(100vh)rotate(720deg)}}.bomb-timer{z-index:20;border-radius:var(--radius-full);border:3px solid var(--color-yellow);width:fit-content;min-width:150px;box-shadow:var(--shadow-md);background:#fff;justify-content:center;align-items:center;gap:10px;margin:12px auto;padding:8px 16px;font-weight:900;display:flex;position:sticky;top:8px}.bomb-timer-icon{transform-origin:50%;font-size:2.2rem;transition:transform .12s linear;animation:1s ease-in-out infinite bombPulse;display:inline-block}.bomb-timer-time{white-space:nowrap}.bomb-timer--warning{border-color:var(--color-orange);color:#d9480f}.bomb-timer--warning .bomb-timer-icon{animation:.6s ease-in-out infinite bombPulse,.35s linear infinite bombShake}.bomb-timer--danger{border-color:var(--color-red);color:var(--color-red)}.bomb-timer--danger .bomb-timer-icon{animation:.3s ease-in-out infinite bombPulse,.16s linear infinite bombShake}.game-over-flash:before{content:"";z-index:1900;pointer-events:none;animation:.75s ease-out forwards gameOverFlash;position:fixed;inset:0}@keyframes bombPulse{0%,to{filter:brightness()}50%{filter:brightness(1.45)}}@keyframes bombShake{0%,to{rotate:-3deg}50%{rotate:3deg}}@keyframes explosionBurst{0%{opacity:0;transform:scale(.2)rotate(-18deg)}65%{opacity:1;transform:scale(1.14)rotate(5deg)}to{transform:scale(1)rotate(0)}}@keyframes gameOverFlash{0%,35%{background:#fff0}15%{background:#ffd93de6}55%{background:#ff6b6b59}to{background:0 0}}.toast{bottom:var(--space-xl);right:var(--space-xl);padding:var(--space-md) var(--space-xl);border-radius:var(--radius-md);z-index:3000;box-shadow:var(--shadow-lg);font-weight:700;animation:.3s ease-out toastSlide;position:fixed}@keyframes toastSlide{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.toast--success{background:var(--color-green);color:#fff}.toast--error{background:var(--color-red);color:#fff}.back-link{align-items:center;gap:var(--space-sm);color:var(--color-text-light);padding:var(--space-sm) 0;margin-bottom:var(--space-md);font-size:1rem;font-weight:700;transition:color .2s;display:inline-flex}.back-link:hover{color:var(--color-blue)}@media (max-width:768px){.feature-grid{grid-template-columns:1fr}.dashboard-greeting h1{font-size:1.8rem}.header-logo{font-size:1.2rem}.page-header h1{font-size:1.5rem}.question-text{font-size:1.2rem}.score-circle{width:140px;height:140px}.score-value{font-size:2.5rem}.worksheet-grid{grid-template-columns:1fr}.upload-area{padding:var(--space-xl)}}.subject-sections{gap:var(--space-xl);flex-direction:column;display:flex}.subject-section{background:var(--color-bg-soft);border-radius:var(--radius-xl);padding:var(--space-lg);border:2px solid var(--color-border)}.subject-section-title{align-items:center;gap:var(--space-sm);color:var(--color-text);margin-bottom:var(--space-md);font-size:1.35rem;font-weight:900;display:flex}.subject-section-emoji{font-size:1.6rem}.subject-section-count{color:var(--color-text-light);border-radius:var(--radius-full);border:2px solid var(--color-border);background:#fff;margin-left:auto;padding:4px 10px;font-size:.85rem;font-weight:800}.score-pill{border-radius:var(--radius-full);border:2px solid #0000;align-items:center;gap:4px;padding:3px 12px;font-size:.85rem;font-weight:900;display:inline-flex}.score-pill--high{background:var(--color-primary-light);color:var(--color-primary-dark);border-color:var(--color-primary)}.score-pill--mid{background:var(--color-yellow-light);color:var(--color-yellow-dark);border-color:var(--color-yellow)}.score-pill--low{background:var(--color-red-light);color:var(--color-red-dark);border-color:var(--color-red)}.grade-badge{border-radius:var(--radius-full);letter-spacing:.3px;padding:4px 10px;font-size:.78rem;font-weight:900;position:absolute;top:10px;left:10px;box-shadow:0 2px #00000014}.grade-badge--done{color:var(--color-primary-dark);border:2px solid var(--color-primary);background:#fff}.grade-badge--pending{color:var(--color-text-light);border:2px solid var(--color-border);background:#fff}.worksheet-card .worksheet-card-image{position:relative}.stats-card{background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-lg);margin-bottom:var(--space-xl);border-bottom:5px solid #dadada}.stats-card-head{margin-bottom:var(--space-md)}.stats-card-head h2{color:var(--color-text);margin-bottom:4px;font-size:1.35rem;font-weight:900}.stats-card-hint{color:var(--color-text-light);font-size:.9rem;font-weight:700}.subject-filter{gap:var(--space-sm);margin-bottom:var(--space-lg);padding-bottom:var(--space-md);border-bottom:2px dashed var(--color-border);flex-wrap:wrap;display:flex}.subject-filter-btn{border-radius:var(--radius-full);border:2px solid var(--color-border);color:var(--color-text);cursor:pointer;background:#fff;min-height:44px;padding:10px 16px;font-family:Nunito,"M PLUS Rounded 1c",sans-serif;font-size:.95rem;font-weight:900;transition:all .2s}.subject-filter-btn:hover{border-color:var(--color-blue);color:var(--color-blue);transform:translateY(-1px)}.subject-filter-btn--active{background:var(--color-blue);color:#fff;border-color:var(--color-blue-dark);box-shadow:0 3px 0 var(--color-blue-dark)}.subject-filter-btn--active:hover{color:#fff;border-color:var(--color-blue-dark)}.subject-filter-btn--disabled{opacity:.4;cursor:not-allowed}.stats-grid{gap:var(--space-md);margin-bottom:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(130px,1fr));align-items:center;display:grid}.stats-grid-item{text-align:center}.stats-grid-label{color:var(--color-text-light);margin-top:6px;font-size:.82rem;font-weight:800}.stats-big-number{font-size:2.4rem;font-weight:900;line-height:1}.stats-big-number-sub{color:var(--color-text-light);margin-left:2px;font-size:1rem}.stats-chart{background:var(--color-bg-soft);border-radius:var(--radius-lg);padding:var(--space-md)}.stats-chart-head{color:var(--color-text-light);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px;margin-bottom:6px;font-size:.9rem;font-weight:800;display:flex}.stats-chart-filter{border-radius:var(--radius-full);border:2px solid var(--color-border);color:var(--color-text);background:#fff;padding:2px 10px}.stats-chart-legend{gap:var(--space-md);color:var(--color-text-light);flex-wrap:wrap;justify-content:center;margin-top:6px;font-size:.78rem;font-weight:800;display:flex}.legend-dot{vertical-align:middle;border-radius:50%;width:10px;height:10px;margin-right:4px;display:inline-block}.chart-empty{text-align:center;padding:var(--space-xl);border-radius:var(--radius-md);color:var(--color-text-light);background:#fff;font-weight:800}.stroke-reference-line{stroke-dasharray:2;animation:1.2s both stroke-reference-draw}@keyframes stroke-reference-draw{0%{stroke-dashoffset:2px}to{stroke-dashoffset:0}}@media (prefers-reduced-motion:reduce){.stroke-reference-line{animation:none}}.record-box{margin-top:var(--space-md);background:var(--color-bg-soft);border-radius:var(--radius-lg);padding:var(--space-sm) var(--space-md);border:2px solid var(--color-border)}.record-grid{gap:var(--space-xs);text-align:center;grid-template-columns:1fr 1fr 1fr;display:grid}.record-label{color:var(--color-text-light);margin-bottom:2px;font-size:.7rem;font-weight:800}.record-big{font-size:1.4rem;font-weight:900;line-height:1}.record-sub{color:var(--color-text-light);margin-top:2px;font-size:.7rem;font-weight:800}.record-relative{color:var(--color-purple);font-size:.95rem;font-weight:900;line-height:1.1}.record-trend{margin-top:var(--space-sm);padding-top:var(--space-xs);border-top:1px dashed var(--color-border)}.record-trend-head{color:var(--color-text-light);justify-content:space-between;align-items:center;margin-bottom:2px;font-size:.72rem;font-weight:800;display:flex}.record-empty{margin-top:var(--space-md);background:var(--color-bg-soft);border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-sm) var(--space-md);text-align:center;color:var(--color-text-light);font-weight:800}.site-footer{margin-top:var(--space-3xl);background:var(--color-bg-soft);border-top:2px solid var(--color-border);padding:var(--space-2xl) var(--space-lg)}.site-footer-inner{gap:var(--space-xl);grid-template-columns:1fr auto;align-items:center;max-width:1200px;margin:0 auto;display:grid}.site-footer-brand{flex-direction:column;gap:4px;display:flex}.site-footer-logo{color:var(--color-text);font-size:1.25rem;font-weight:900}.site-footer-tagline{color:var(--color-text-light);font-size:.9rem;font-weight:700}.site-footer-nav{gap:var(--space-md);flex-wrap:wrap;justify-content:flex-end;display:flex}.site-footer-nav a{color:var(--color-text);border-radius:var(--radius-full);border:2px solid #0000;padding:6px 12px;font-size:.95rem;font-weight:800;transition:all .2s}.site-footer-nav a:hover{border-color:var(--color-border);color:var(--color-blue-dark);background:#fff}.site-footer-meta{border-top:2px dashed var(--color-border);padding-top:var(--space-md);color:var(--color-text-light);text-align:center;grid-column:1/-1;font-weight:700}@media (max-width:640px){.site-footer-inner{grid-template-columns:1fr}.site-footer-nav{justify-content:flex-start}}.info-page{padding-bottom:var(--space-2xl)}.info-card{background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-xl);max-width:800px;color:var(--color-text);border-bottom:5px solid #dadada;margin:0 auto;line-height:1.8}.info-card h2{color:var(--color-text);margin-top:var(--space-lg);margin-bottom:var(--space-sm);border-bottom:2px solid var(--color-border);padding-bottom:6px;font-size:1.2rem;font-weight:900}.info-card h2:first-of-type{margin-top:0}.info-card p{margin-bottom:var(--space-md);font-size:1rem;font-weight:600}.info-card ul{margin:var(--space-sm) 0 var(--space-md);padding-left:1.4em}.info-card li{margin-bottom:6px;font-size:1rem;font-weight:600;line-height:1.6}.info-card a{color:var(--color-blue-dark);font-weight:800;text-decoration:underline}.info-card a:hover{color:var(--color-blue)}.info-card code{background:var(--color-bg-soft);border-radius:var(--radius-sm);padding:2px 6px;font-size:.9em}.info-updated{margin-top:var(--space-xl);padding-top:var(--space-md);border-top:2px dashed var(--color-border);color:var(--color-text-light);text-align:right;font-size:.85rem;font-weight:700}.contact-email-card{padding:var(--space-lg);margin:var(--space-md) 0 var(--space-lg);background:var(--color-primary-light);border:2px solid var(--color-primary);border-bottom:5px solid var(--color-primary-dark);border-radius:var(--radius-lg);text-align:center;flex-direction:column;gap:4px;display:flex}.contact-email-label{color:var(--color-primary-dark);letter-spacing:1px;font-size:.85rem;font-weight:800}.contact-email-link{color:var(--color-primary-dark);word-break:break-all;font-size:1.25rem;font-weight:900}.contact-email-link:hover{color:#2f7600}.music-toggle{border-radius:var(--radius-full);border:2px solid var(--color-border);color:var(--color-text);cursor:pointer;background:#fff;border-bottom-width:4px;align-items:center;gap:6px;min-height:40px;padding:8px 14px;font-family:Nunito,"M PLUS Rounded 1c",sans-serif;font-size:.9rem;font-weight:900;transition:transform 80ms,box-shadow .2s;display:inline-flex}.music-toggle:hover{transform:translateY(-1px)}.music-toggle:active{border-bottom-width:2px;transform:translateY(1px)}.music-toggle--on{border-color:var(--color-yellow);border-bottom-color:var(--color-yellow-dark);background:linear-gradient(135deg,#fff4cc,#ffe8cc)}.music-toggle--off{background:var(--color-bg-soft);color:var(--color-text-light)}.grade-level-radios{flex-wrap:wrap;gap:8px;display:flex}.grade-level-radio{border:2px solid var(--color-border,#e5e5e5);border-radius:var(--radius-md,12px);text-align:center;cursor:pointer;min-width:0;color:var(--color-text,#4b4b4b);background:#fff;flex:30%;padding:12px 8px;font-size:.95rem;font-weight:800;transition:transform .1s,border-color .15s,background .15s}.grade-level-radio input{display:none}.grade-level-radio:hover{border-color:var(--color-blue,#1cb0f6);background:#f0f9ff}.grade-level-radio--active{border-color:var(--color-blue,#1cb0f6);color:var(--color-blue-dark,#1899d6);background:#e0f4ff}.cookie-consent{z-index:9999;border:2px solid var(--color-border,#e5e5e5);border-radius:var(--radius-md,12px);background:#fff;max-width:640px;margin:0 auto;padding:16px 18px;animation:.3s cookie-consent-slide-up;position:fixed;bottom:16px;left:16px;right:16px;box-shadow:0 8px 24px #0000002e}@keyframes cookie-consent-slide-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.cookie-consent-inner{flex-direction:column;gap:10px;display:flex}.cookie-consent-text{color:var(--color-text,#4b4b4b);margin:0;font-size:.95rem;font-weight:600;line-height:1.5}.cookie-consent-link{color:var(--color-blue,#1cb0f6);font-weight:800;text-decoration:underline}.cookie-consent-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.cookie-consent-btn{border-radius:var(--radius-md,10px);cursor:pointer;border:2px solid #0000;padding:10px 18px;font-size:.95rem;font-weight:800;transition:transform 50ms,filter .15s}.cookie-consent-btn:hover{filter:brightness(.95)}.cookie-consent-btn:active{transform:translateY(1px)}.cookie-consent-btn--accept{background:var(--color-green,#58cc02);color:#fff;border-bottom:4px solid var(--color-green-dark,#46a302)}.cookie-consent-btn--decline{color:var(--color-text-light,#777);border:2px solid var(--color-border,#e5e5e5);background:#fff}@media (max-width:480px){.cookie-consent{padding:12px 14px;bottom:8px;left:8px;right:8px}.cookie-consent-actions{justify-content:stretch}.cookie-consent-btn{flex:1}}.subject-hub-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-top:24px;display:grid}.subject-hub-card{border:2px solid var(--color-border,#e5e5e5);border-radius:var(--radius-md,16px);text-align:center;cursor:pointer;color:inherit;background:#fff;padding:20px 16px;text-decoration:none;transition:transform .12s,border-color .2s,box-shadow .2s;display:block}.subject-hub-card:hover{border-color:var(--color-blue,#1cb0f6);transform:translateY(-3px);box-shadow:0 6px 14px #1cb0f62e}.subject-hub-card-emoji{font-size:3.2rem;line-height:1;display:block}.subject-hub-card-label{margin-top:10px;font-size:1.15rem;font-weight:900}.subject-hub-card-sub{color:var(--color-text-light,#777);margin-top:4px;font-size:.85rem;font-weight:600}.records-timeline{flex-direction:column;gap:10px;margin-top:16px;display:flex}.records-row{border:2px solid var(--color-border,#e5e5e5);border-radius:var(--radius-md,12px);color:inherit;cursor:pointer;background:#fff;align-items:center;gap:12px;padding:12px 14px;text-decoration:none;transition:transform 80ms,border-color .15s,box-shadow .15s;display:flex}.records-row:hover{border-color:var(--color-blue,#1cb0f6);transform:translateY(-1px);box-shadow:0 4px 10px #1cb0f61f}.records-row-icon{background:var(--color-bg-soft,#f7f7f7);border-radius:50%;flex:0 0 40px;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.4rem;display:flex}.records-row-body{flex:1;min-width:0}.records-row-title{flex-wrap:wrap;align-items:center;gap:8px;font-weight:800;display:flex}.records-row-kind{background:var(--color-bg-soft,#f7f7f7);color:var(--color-text-light,#777);border-radius:10px;padding:2px 8px;font-size:.75rem;font-weight:700}.records-row-meta{color:var(--color-text-light,#777);flex-wrap:wrap;align-items:center;gap:8px;margin-top:4px;font-size:.9rem;font-weight:700;display:flex}.points-toast{z-index:2500;opacity:0;pointer-events:none;padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-full);background:var(--color-yellow);color:#4b3600;box-shadow:var(--shadow-lg);white-space:nowrap;font-size:1.15rem;font-weight:900;animation:.4s cubic-bezier(.34,1.56,.64,1) forwards pointsToastPop,.3s ease-in 2.2s forwards pointsToastFade;position:fixed;top:90px;left:50%;transform:translate(-50%,12px)scale(.85)}.points-toast--message{background:var(--color-bg-card);color:var(--color-text-light);box-shadow:var(--shadow-md);border:2px solid var(--color-border-soft);font-size:.85rem;font-weight:700}@keyframes pointsToastPop{0%{opacity:0;transform:translate(-50%,12px)scale(.85)}60%{opacity:1;transform:translate(-50%,-10px)scale(1.08)}to{opacity:1;transform:translate(-50%,-2px)scale(1)}}@keyframes pointsToastFade{to{opacity:0;visibility:hidden}}.header-points-badge{color:#fff;border-radius:var(--radius-full);background:#fff3;border:2px solid #fff6;align-items:center;gap:4px;padding:6px 14px;font-size:.95rem;font-weight:900;text-decoration:none;transition:all .2s;display:inline-flex}.header-points-badge:hover{background:#ffffff4d;transform:scale(1.05)}.header-nav-link{background:#fff3;border:2px solid #fff6;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.2rem;text-decoration:none;transition:all .2s;display:inline-flex}.header-nav-link:hover{background:#ffffff4d;transform:scale(1.05)}@media (max-width:768px){.header-user{justify-content:flex-end;row-gap:var(--space-sm);flex-wrap:wrap}}.char-image{object-fit:contain;border-radius:var(--radius-md);background:var(--color-bg-soft)}.char-placeholder{border-radius:var(--radius-md);color:#fff;flex-direction:column;justify-content:center;align-items:center;gap:4px;display:flex;overflow:hidden}.char-placeholder-emoji{filter:drop-shadow(0 2px 3px #0000002e);line-height:1}.char-placeholder-initial{border-radius:var(--radius-full);background:#ffffff59;padding:2px 8px;font-weight:900;line-height:1}.char-placeholder--common{background:linear-gradient(135deg,#b0bec5,#78909c)}.char-placeholder--rare{background:linear-gradient(135deg, var(--color-blue), var(--color-blue-dark))}.char-placeholder--epic{background:linear-gradient(135deg, var(--color-purple), #9c4dcc)}.char-placeholder--legendary{background:linear-gradient(135deg, var(--color-yellow), var(--color-orange));box-shadow:inset 0 0 0 3px #fff3bf,0 0 14px #ffc80080}.char-placeholder--outfit{background:linear-gradient(135deg,#74c0fc,#4dabf7)}.char-placeholder--weapon{background:linear-gradient(135deg,#ffb17a,#ff922b)}.rarity-badge{border-radius:var(--radius-full);border:2px solid #0000;align-items:center;gap:4px;padding:3px 10px;font-size:.78rem;font-weight:900;display:inline-flex}.rarity-badge--common{color:#546e7a;background:#eceff1;border-color:#cfd8dc}.rarity-badge--rare{background:var(--color-blue-light);color:var(--color-blue-dark);border-color:var(--color-blue)}.rarity-badge--epic{background:var(--color-purple-light);color:#7b2cbf;border-color:var(--color-purple)}.rarity-badge--legendary{background:var(--color-yellow-light);color:var(--color-yellow-dark);border-color:var(--color-yellow)}.inline-feedback{border-radius:var(--radius-sm);margin:0;padding:4px 8px;font-size:.8rem;font-weight:700}.inline-feedback--success{color:var(--color-green-dark);background:var(--color-green-light)}.inline-feedback--error{color:var(--color-red-dark);background:var(--color-red-light)}.shop-balance{align-items:center;gap:var(--space-md);background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-lg);margin-bottom:var(--space-lg);border-bottom:5px solid #dadada;display:flex}.shop-balance-coin{font-size:2.6rem}.shop-balance-amount{color:var(--color-text);font-size:1.6rem;font-weight:900}.shop-balance-unit{color:var(--color-text-light);margin-left:4px;font-size:1rem;font-weight:700}.shop-balance-hint{color:var(--color-text-light);font-size:.85rem;font-weight:700}.shop-balance-note{color:var(--color-text-muted);margin-top:2px;font-size:.8rem;font-weight:700}.shop-grid{gap:var(--space-lg);margin-top:var(--space-md);grid-template-columns:repeat(auto-fill,minmax(220px,1fr));display:grid}.shop-card{background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center;align-items:center;gap:var(--space-sm);box-shadow:var(--shadow-sm);flex-direction:column;transition:transform .15s,box-shadow .15s;display:flex}.shop-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}.shop-card-name{margin:0;font-size:1.05rem;font-weight:900}.shop-card-desc{color:var(--color-text-light);min-height:2.6em;font-size:.85rem;font-weight:600;line-height:1.4}.shop-card-footer{align-items:center;gap:var(--space-sm);flex-direction:column;width:100%;margin-top:auto;display:flex}.shop-card-price{color:var(--color-text);font-size:1rem;font-weight:900}.character-stage-card{text-align:center;padding:var(--space-xl)}.character-stage-image-wrap{margin:0 auto var(--space-md);display:inline-flex;position:relative}.character-gear-badge{border:3px solid var(--color-border);width:44px;height:44px;box-shadow:var(--shadow-sm);background:#fff;border-radius:50%;justify-content:center;align-items:center;font-size:1.3rem;display:flex;position:absolute;bottom:-6px;overflow:hidden}.character-gear-badge--outfit{left:-10px}.character-gear-badge--weapon{right:-10px}.character-stage-name{margin:8px 0 4px;font-size:1.6rem;font-weight:900}.character-stage-label{border-radius:var(--radius-full);background:var(--color-green-light);color:var(--color-green-dark);margin-top:8px;padding:3px 12px;font-size:.85rem;font-weight:800;display:inline-block}.growth-bar-track{width:100%;max-width:360px;height:20px;margin:var(--space-md) auto 4px;background:var(--color-bg-soft);border-radius:var(--radius-full);border:2px solid var(--color-border);overflow:hidden}.growth-bar-fill{background:linear-gradient(90deg, var(--color-green), var(--color-blue));border-radius:var(--radius-full);height:100%;transition:width .5s cubic-bezier(.34,1.56,.64,1)}.growth-bar-hint{color:var(--color-text-light);margin:4px 0 0;font-size:.9rem;font-weight:700}.character-picker-grid{gap:var(--space-sm);margin-top:var(--space-md);grid-template-columns:repeat(auto-fill,minmax(84px,1fr));display:grid}.character-picker-item{border:3px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-sm);cursor:pointer;background:#fff;flex-direction:column;align-items:center;gap:4px;font-family:inherit;transition:all .15s;display:flex}.character-picker-item:hover{border-color:var(--color-blue-light);transform:translateY(-2px)}.character-picker-item--active{border-color:var(--color-blue);background:var(--color-blue-light);box-shadow:0 3px 0 var(--color-blue-dark)}.character-picker-item-label{text-align:center;font-size:.72rem;font-weight:800}.gear-picker-row{align-items:center;gap:var(--space-sm);margin-top:var(--space-sm);flex-wrap:wrap;display:flex}.gear-chip{border:2px solid var(--color-border);border-radius:var(--radius-full);cursor:pointer;background:#fff;align-items:center;gap:6px;padding:6px 14px;font-family:inherit;font-size:.85rem;font-weight:800;transition:all .15s;display:inline-flex}.gear-chip:hover{border-color:var(--color-blue);color:var(--color-blue)}.gear-chip--active{background:var(--color-blue);border-color:var(--color-blue-dark);color:#fff}.gear-chip-icon{border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;display:inline-flex;overflow:hidden}