@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-page:#fafaf7;--bg-card:#fff;--bg-subtle:#f5f3ee;--bg-hover:#f0ede6;--bg-input:#f8f7f4;--mint:#86efac;--mint-soft:#d1fae5;--mint-dark:#22c55e;--mint-bg:#86efac26;--sky:#7dd3fc;--sky-soft:#dbeafe;--sky-dark:#0ea5e9;--sky-bg:#7dd3fc26;--lavender:#c4b5fd;--lavender-soft:#ede9fe;--lavender-dark:#7c3aed;--lavender-bg:#c4b5fd2e;--peach:#fdba74;--peach-soft:#fff7ed;--peach-dark:#f97316;--peach-bg:#fdba7426;--rose:#fda4af;--rose-soft:#fff1f2;--rose-dark:#f43f5e;--rose-bg:#fda4af2e;--coral:#fca5a5;--coral-dark:#ef4444;--amber:#fde68a;--amber-dark:#f59e0b;--success:#22c55e;--success-bg:#22c55e1a;--success-border:#22c55e4d;--error:#ef4444;--error-bg:#ef444414;--error-border:#ef444440;--warning:#f59e0b;--warning-bg:#f59e0b1a;--text-1:#2d3436;--text-2:#636e72;--text-3:#b2bec3;--border:#e8e4dc;--border-hover:#d5cfc4;--border-focus:var(--lavender);--shadow-xs:0 1px 2px #0000000a;--shadow-sm:0 2px 8px #0000000f;--shadow-md:0 4px 16px #00000014;--shadow-lg:0 8px 32px #0000001a;--shadow-card:0 2px 12px #0000000d;--shadow-hover:0 8px 24px #0000001a;--font-display:"Nunito", sans-serif;--font-body:"Inter", sans-serif;--s1:.25rem;--s2:.5rem;--s3:.75rem;--s4:1rem;--s5:1.25rem;--s6:1.5rem;--s8:2rem;--s10:2.5rem;--s12:3rem;--s16:4rem;--s20:5rem;--r-sm:.5rem;--r-md:.75rem;--r-lg:1rem;--r-xl:1.25rem;--r-2xl:1.5rem;--r-3xl:2rem;--r-full:9999px;--t-fast:.12s ease;--t-base:.2s cubic-bezier(.4, 0, .2, 1);--t-slow:.35s cubic-bezier(.4, 0, .2, 1);--t-bounce:.4s cubic-bezier(.34, 1.56, .64, 1)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-body);background:var(--bg-page);color:var(--text-1);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.6;overflow-x:hidden}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--text-1);font-weight:800;line-height:1.25}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}p{color:var(--text-2);line-height:1.7}a{color:var(--lavender-dark);transition:color var(--t-fast);text-decoration:none}a:hover{color:var(--sky-dark)}.page-wrapper{background:var(--bg-page);min-height:100vh;position:relative}.page-wrapper:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(at 15% 15%,#c4b5fd14 0%,#0000 50%),radial-gradient(at 85% 20%,#7dd3fc0f 0%,#0000 50%),radial-gradient(at 50% 90%,#86efac0d 0%,#0000 50%);position:fixed;inset:0}.page-content{z-index:1;position:relative}.container{width:100%;max-width:1100px;padding:0 var(--s6);margin:0 auto}@media (width<=640px){.container{padding:0 var(--s4)}}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-2xl);box-shadow:var(--shadow-card)}.card-hover{transition:all var(--t-base)}.card-hover:hover{border-color:var(--border-hover);box-shadow:var(--shadow-hover);transform:translateY(-3px)}.btn{justify-content:center;align-items:center;gap:var(--s2);padding:var(--s3) var(--s6);border-radius:var(--r-lg);font-family:var(--font-display);cursor:pointer;transition:all var(--t-base);white-space:nowrap;-webkit-user-select:none;user-select:none;letter-spacing:.01em;border:none;font-size:1rem;font-weight:700;display:inline-flex;position:relative}.btn:active{transform:scale(.97)!important}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important}.btn-primary{background:linear-gradient(135deg, var(--lavender-dark) 0%, var(--sky-dark) 100%);color:#fff;box-shadow:0 4px 14px #7c3aed40}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #7c3aed59}.btn-success{background:linear-gradient(135deg, var(--mint-dark) 0%, #10b981 100%);color:#fff;box-shadow:0 4px 14px #22c55e40}.btn-gold{background:linear-gradient(135deg, var(--peach) 0%, var(--amber-dark) 100%);color:#fff;font-weight:800;box-shadow:0 4px 14px #f59e0b40}.btn-gold:hover{transform:translateY(-2px);box-shadow:0 6px 20px #f59e0b59}.btn-ghost{color:var(--text-2);border:1px solid var(--border);background:0 0}.btn-ghost:hover{border-color:var(--border-hover);color:var(--text-1);background:var(--bg-subtle)}.btn-outline{color:var(--lavender-dark);border:2px solid var(--lavender);background:0 0}.btn-outline:hover{background:var(--lavender-bg);border-color:var(--lavender-dark)}.btn-lg{padding:var(--s4) var(--s10);border-radius:var(--r-xl);font-size:1.0625rem}.btn-sm{padding:var(--s2) var(--s4);font-size:.875rem}.btn-icon{padding:var(--s3);border-radius:var(--r-full);aspect-ratio:1}.input-group{gap:var(--s2);flex-direction:column;display:flex}.input-label{color:var(--text-2);letter-spacing:.03em;font-size:.8125rem;font-weight:600}.input-field{width:100%;padding:var(--s4) var(--s5);background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--r-lg);color:var(--text-1);font-family:var(--font-body);transition:all var(--t-base);outline:none;font-size:1rem}.input-field::placeholder{color:var(--text-3)}.input-field:focus{border-color:var(--lavender-dark);background:#fff;box-shadow:0 0 0 4px #7c3aed1a}.input-field.error{border-color:var(--error);box-shadow:0 0 0 4px #ef44441a}.badge{align-items:center;gap:var(--s1);padding:4px var(--s3);border-radius:var(--r-full);letter-spacing:.03em;font-size:.75rem;font-weight:700;display:inline-flex}.badge-violet{background:var(--lavender-bg);color:var(--lavender-dark)}.badge-cyan{background:var(--sky-bg);color:var(--sky-dark)}.badge-gold{background:var(--peach-bg);color:var(--peach-dark)}.badge-success{background:var(--success-bg);color:var(--success)}.badge-error{background:var(--error-bg);color:var(--error)}.badge-pink{background:var(--rose-bg);color:var(--rose-dark)}.badge-easy{background:var(--mint-bg);color:var(--mint-dark)}.badge-medium{background:var(--peach-bg);color:var(--peach-dark)}.badge-hard{background:var(--rose-bg);color:var(--rose-dark)}.alert{padding:var(--s3) var(--s5);border-radius:var(--r-lg);align-items:center;gap:var(--s3);font-size:.9rem;font-weight:500;display:flex}.alert-error{background:var(--error-bg);border:1px solid var(--error-border);color:var(--error)}.alert-success{background:var(--success-bg);border:1px solid var(--success-border);color:var(--success)}.alert-info{background:var(--sky-bg);color:var(--sky-dark);border:1px solid #0ea5e933}.progress-bar{background:var(--bg-subtle);border-radius:var(--r-full);width:100%;height:8px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--lavender) 0%, var(--sky) 100%);border-radius:var(--r-full);height:100%;transition:width .6s cubic-bezier(.4,0,.2,1)}.xp-bar{background:var(--bg-subtle);border-radius:var(--r-full);width:100%;height:5px;overflow:hidden}.xp-fill{background:linear-gradient(90deg, var(--mint) 0%, var(--sky) 100%);border-radius:var(--r-full);height:100%;transition:width 1s}.spinner{border:3px solid var(--border);border-top-color:var(--lavender-dark);border-radius:50%;width:44px;height:44px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.glow-text{background:linear-gradient(135deg, var(--lavender-dark) 0%, var(--sky-dark) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.glow-text-gold{background:linear-gradient(135deg, var(--peach-dark) 0%, var(--amber-dark) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.glow-text-cosmic{background:linear-gradient(135deg, var(--lavender-dark) 0%, var(--rose-dark) 50%, var(--sky-dark) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.divider{align-items:center;gap:var(--s4);color:var(--text-3);font-size:.8125rem;display:flex}.divider:before,.divider:after{content:"";background:var(--border);flex:1;height:1px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes popIn{0%{opacity:0;transform:scale(.75)}to{opacity:1;transform:scale(1)}}@keyframes slideRight{0%{opacity:0;transform:translate(-16px)}to{opacity:1;transform:translate(0)}}@keyframes slideLeft{0%{opacity:0;transform:translate(16px)}to{opacity:1;transform:translate(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pulseGlow{0%,to{box-shadow:var(--shadow-card)}50%{box-shadow:var(--shadow-md)}}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes shake{0%,to{transform:translate(0)}15%{transform:translate(-6px)}30%{transform:translate(6px)}45%{transform:translate(-4px)}60%{transform:translate(4px)}75%{transform:translate(-2px)}}@keyframes correctBounce{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}@keyframes scoreUp{0%{opacity:0;transform:translate(-50%,-50%)scale(.8)}20%{opacity:1;transform:translate(-50%,-60%)scale(1.2)}to{opacity:0;transform:translate(-50%,-100%)scale(1)}}@keyframes countdownUrgent{0%{transform:scale(1)}50%{filter:drop-shadow(0 0 4px #ef44444d);transform:scale(1.12)}to{transform:scale(1)}}.anim-fadeInUp{animation:.45s both fadeInUp}.anim-scaleIn{animation:.35s cubic-bezier(.34,1.56,.64,1) both scaleIn}.anim-popIn{animation:.3s cubic-bezier(.34,1.56,.64,1) both popIn}.anim-fadeIn{animation:.3s both fadeIn}.anim-slideRight{animation:.35s both slideRight}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-hover)}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.flex{display:flex}.flex-col{flex-direction:column;display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--s2)}.gap-3{gap:var(--s3)}.gap-4{gap:var(--s4)}.w-full{width:100%}.text-center{text-align:center}.auth-page{background:radial-gradient(ellipse at 20% 30%, #c4b5fd1a 0%, transparent 50%), radial-gradient(ellipse at 80% 70%, #86efac14 0%, transparent 50%), var(--bg-page);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-layout{gap:var(--s12);width:100%;max-width:1000px;padding:var(--s8) var(--s6);grid-template-columns:1fr 1fr;align-items:center;display:grid}.auth-orb{pointer-events:none;z-index:0;opacity:.5;border-radius:50%;position:fixed}.auth-orb-1{background:radial-gradient(circle,#c4b5fd26 0%,#0000 70%);width:300px;height:300px;animation:8s ease-in-out infinite float;top:10%;left:5%}.auth-orb-2{background:radial-gradient(circle,#86efac1f 0%,#0000 70%);width:200px;height:200px;animation:10s ease-in-out 2s infinite float;bottom:15%;right:10%}.auth-orb-3{background:radial-gradient(circle,#7dd3fc1a 0%,#0000 70%);width:150px;height:150px;animation:7s ease-in-out 1s infinite float;top:50%;right:30%}.auth-brand-panel{gap:var(--s6);flex-direction:column;display:flex;position:relative}.brand-logo-big{filter:drop-shadow(0 4px 8px 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var(--t-fast);box-shadow:var(--shadow-sm);background:#fff;font-weight:700;text-decoration:none;display:flex}.btn-google:hover{background:var(--bg-subtle);box-shadow:var(--shadow-md);transform:translateY(-1px)}.google-icon{width:20px;height:20px}.input-group-relative{flex-direction:column;display:flex;position:relative}.password-toggle{right:var(--s3);color:var(--text-3);cursor:pointer;transition:color var(--t-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:4px;display:flex;position:absolute;bottom:12px}.password-toggle:hover{color:var(--lavender-dark)}.password-strength-wrap{gap:var(--s2);flex-direction:column;margin-top:-4px;display:flex}.strength-bar-container{gap:4px;width:100%;height:6px;display:flex}.strength-segment{background:var(--border);border-radius:var(--r-full);flex:1;transition:background .3s}.strength-header{justify-content:space-between;align-items:center;font-size:.8rem;font-weight:700;display:flex}.strength-rules{grid-template-columns:1fr 1fr;gap:4px;margin-top:4px;display:grid}.strength-rule{color:var(--text-3);align-items:center;gap:6px;font-size:.75rem;display:flex}.strength-rule.met{color:var(--success)}.rule-icon{font-size:.7rem}.divider{text-align:center;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;margin:var(--s2) 0;align-items:center;font-size:.85rem;font-weight:600;display:flex}.divider:before,.divider:after{content:"";border-bottom:1px solid var(--border);flex:1}.divider:before{margin-right:var(--s3)}.divider:after{margin-left:var(--s3)}.demo-hint-btn{align-items:center;gap:var(--s3);width:100%;padding:var(--s3) var(--s4);background:var(--lavender-bg);border-radius:var(--r-lg);cursor:pointer;color:var(--lavender-dark);transition:all var(--t-base);text-align:left;border:1px solid #c4b5fd4d;font-size:.85rem;font-weight:600;display:flex}.demo-hint-btn:hover{border-color:var(--lavender);background:#c4b5fd40}.demo-hint-arrow{opacity:.6;margin-left:auto;font-size:1.1rem}.auth-footer-link{text-align:center;color:var(--text-2);font-size:.95rem}.auth-footer-link a{color:var(--lavender-dark);font-weight:800;text-decoration:none}.auth-footer-link a:hover{text-decoration:underline}.auth-stats-row{justify-content:center;gap:var(--s8);padding:var(--s4) 0;display:flex}.auth-stat{color:var(--text-3);flex-direction:column;align-items:center;gap:2px;font-size:.8rem;display:flex}.auth-stat-icon{font-size:1.2rem}.auth-stat strong{font-size:1.1rem;font-weight:800}@media (width<=900px){.auth-layout{max-width:500px;padding:var(--s6) var(--s4);grid-template-columns:1fr}.auth-brand-panel{display:none}.auth-card{padding:var(--s6)}.auth-stats-row{gap:var(--s6)}.strength-rules{grid-template-columns:1fr}}.input-error{animation:.4s 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var(--t-base);font-size:.9rem;font-weight:700;text-decoration:none;display:flex}.nav-pill:hover{background:var(--bg-subtle);color:var(--text-1)}.header-right{align-items:center;gap:var(--s3);display:flex}.xp-widget{align-items:center;gap:var(--s2);padding:var(--s1) var(--s3);background:var(--bg-subtle);border-radius:var(--r-full);border:1px solid var(--border);display:flex}.xp-level-badge{background:linear-gradient(135deg, var(--lavender-dark), var(--sky-dark));color:#fff;border-radius:var(--r-full);font-family:var(--font-display);align-items:center;gap:2px;padding:3px 10px;font-size:.75rem;font-weight:800;display:flex}.xp-level-badge span{opacity:.8}.xp-details{flex-direction:column;gap:2px;min-width:70px;display:flex}.xp-label-row{align-items:center;gap:var(--s2);font-size:.7rem;display:flex}.xp-label{color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.xp-value{font-size:.75rem;font-weight:700}.streak-pill{padding:var(--s1) var(--s3);background:var(--peach-bg);border-radius:var(--r-full);font-family:var(--font-display);color:var(--peach-dark);border:1px solid #fdba744d;align-items:center;gap:4px;font-size:.8rem;font-weight:800;display:flex}.user-avatar-btn{cursor:pointer;background:0 0;border:none;padding:0;position:relative}.user-avatar-ring{border:2px solid var(--lavender);opacity:0;transition:opacity var(--t-base);border-radius:50%;position:absolute;inset:-3px}.user-avatar-btn:hover .user-avatar-ring{opacity:1}.user-avatar{width:36px;height:36px;font-family:var(--font-display);color:#fff;background:linear-gradient(135deg, var(--lavender), var(--sky));border-radius:50%;justify-content:center;align-items:center;font-size:.9rem;font-weight:800;display:flex}@media (width<=640px){.header-inner{height:56px}.header-nav,.xp-widget{display:none}.logo-wordmark{font-size:1.1rem}}.lobby-content{padding:var(--s8) 0 var(--s16);gap:var(--s8);flex-direction:column;display:flex}.lobby-hero{justify-content:space-between;align-items:center;gap:var(--s8);padding:var(--s8);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-3xl);box-shadow:var(--shadow-sm);display:flex}.hero-text{gap:var(--s3);flex-direction:column;flex:1;display:flex}.hero-greeting{align-items:center;gap:var(--s2);color:var(--text-2);font-size:1rem;display:flex}.hero-wave{font-size:1.4rem;animation:3s ease-in-out infinite float}.hero-title{color:var(--text-1);font-size:1.75rem;font-weight:900;line-height:1.3}.hero-subtitle{color:var(--text-2);max-width:460px;font-size:.95rem}.hero-stats-grid{gap:var(--s3);flex-shrink:0;display:flex}.hero-stat-card{align-items:center;gap:var(--s3);padding:var(--s3) var(--s5);background:var(--bg-subtle);border:1px solid var(--border);border-radius:var(--r-xl);display:flex}.hs-icon{font-size:1.4rem}.hs-info{flex-direction:column;display:flex}.hs-info 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solid var(--lavender)}.q-dot-done{background:var(--success-bg);color:var(--success)}.q-dot-skipped{background:var(--peach-bg);color:var(--peach-dark)}.score-flash{font-family:var(--font-display);color:var(--success);z-index:200;pointer-events:none;filter:drop-shadow(0 4px 12px #22c55e4d);font-size:2.5rem;font-weight:900;animation:1s forwards scoreUp;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%)}.streak-toast{background:var(--bg-card);border:2px solid var(--peach);box-shadow:var(--shadow-lg);border-radius:var(--r-full);font-family:var(--font-display);color:var(--peach-dark);z-index:200;padding:10px 24px;font-size:1.05rem;font-weight:900;position:fixed;top:90px;left:50%;transform:translate(-50%)}.streak-toast span{opacity:.7;margin-left:var(--s2);font-size:.85rem}@media 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