:root{--bg-primary: #0d0d1a;--bg-secondary: #12122a;--bg-card: rgba(255, 255, 255, .05);--border-glass: rgba(255, 255, 255, .1);--accent-blue: #4cc9f0;--accent-purple: #7c3aed;--accent-pink: #f72585;--accent-green: #06d6a0;--accent-yellow: #ffca3a;--accent-orange: #ff6b35;--text-primary: #ffffff;--text-secondary: #a0aec0;--gradient-main: linear-gradient(135deg, #4cc9f0, #7c3aed, #f72585);--gradient-btn: linear-gradient(135deg, #7c3aed, #4cc9f0);--shadow-glow: 0 0 20px rgba(76, 201, 240, .3);--shadow-card: 0 8px 32px rgba(0, 0, 0, .4);--radius-card: 16px;--radius-btn: 12px;--transition: .25s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;overflow-x:hidden}body{font-family:Nunito,system-ui,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden;background-image:radial-gradient(ellipse at 20% 20%,rgba(124,58,237,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(76,201,240,.08) 0%,transparent 50%)}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;font-family:inherit}ul{list-style:none}img{max-width:100%;display:block}.gradient-text{background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.glass-card{background:var(--bg-card);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--border-glass);border-radius:var(--radius-card);box-shadow:var(--shadow-card)}.navbar{position:sticky;top:0;z-index:100;background:#0d0d1ad9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-glass)}.nav-container{max-width:1100px;margin:0 auto;padding:0 1.5rem;height:64px;display:flex;align-items:center;justify-content:space-between}.nav-logo{display:flex;align-items:center;gap:.5rem;font-family:Orbitron,sans-serif;font-weight:900;font-size:1.3rem;letter-spacing:1px}.logo-atom{font-size:1.4rem}.logo-text{background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;align-items:center;gap:1.5rem}.nav-link{font-weight:600;font-size:.95rem;color:var(--text-secondary);transition:color var(--transition);padding:.25rem 0;border-bottom:2px solid transparent}.nav-link:hover{color:var(--text-primary);border-bottom-color:var(--accent-blue)}.nav-player-info{font-size:.85rem;font-weight:700;color:var(--accent-yellow);background:#ffca3a1a;border:1px solid rgba(255,202,58,.2);border-radius:999px;padding:.2rem .75rem;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}.main-content{max-width:1100px;margin:0 auto;padding:2rem 1.5rem;min-height:calc(100vh - 128px)}.hero{position:relative;padding:4rem 0 3rem;overflow:hidden}.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0}.hero-content{position:relative;z-index:1;max-width:640px;margin:0 auto;text-align:center}.hero-badge{display:inline-block;background:#4cc9f01f;border:1px solid rgba(76,201,240,.3);border-radius:999px;padding:.3rem 1rem;font-size:.85rem;font-weight:700;color:var(--accent-blue);margin-bottom:1.5rem;animation:fadeIn .6s ease forwards}.hero-title{font-family:Orbitron,sans-serif;font-size:clamp(2rem,5vw,3.5rem);font-weight:900;line-height:1.15;margin-bottom:1.25rem;animation:slideIn .6s ease .1s forwards;opacity:0}.hero-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2.5rem;max-width:480px;margin-left:auto;margin-right:auto;animation:slideIn .6s ease .2s forwards;opacity:0}.hero-subtitle strong{color:var(--accent-yellow)}.atom-decoration{position:absolute;right:-80px;top:50%;transform:translateY(-50%);width:320px;height:320px;opacity:.15}.atom-nucleus{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:28px;height:28px;background:var(--accent-blue);border-radius:50%;box-shadow:0 0 16px var(--accent-blue)}.atom-orbit{position:absolute;top:50%;left:50%;border:2px solid var(--accent-purple);border-radius:50%;transform:translate(-50%,-50%)}.atom-orbit-1{width:140px;height:60px;animation:orbit 3s linear infinite}.atom-orbit-2{width:140px;height:60px;animation:orbit 4s linear infinite reverse;transform:translate(-50%,-50%) rotate(60deg)}.atom-orbit-3{width:140px;height:60px;animation:orbit 5s linear infinite;transform:translate(-50%,-50%) rotate(120deg)}.atom-electron{position:absolute;top:-5px;left:50%;transform:translate(-50%);width:10px;height:10px;background:var(--accent-pink);border-radius:50%;box-shadow:0 0 8px var(--accent-pink)}.play-card{max-width:420px;margin:0 auto;padding:2rem;animation:slideIn .6s ease .3s forwards;opacity:0}.play-card-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1.5rem}.play-card-icon{font-size:1.5rem}.play-card-title{font-size:1.1rem;font-weight:800}.play-card-body{display:flex;flex-direction:column;gap:.75rem}.input-label{font-size:.85rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.pseudo-input{width:100%;padding:.85rem 1.1rem;background:#ffffff12;border:1.5px solid var(--border-glass);border-radius:var(--radius-btn);color:var(--text-primary);font-family:inherit;font-size:1rem;font-weight:600;outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.pseudo-input:focus{border-color:var(--accent-blue);box-shadow:0 0 0 3px #4cc9f033}.pseudo-input::placeholder{color:var(--text-secondary)}.input-error{color:var(--accent-pink);font-size:.85rem;font-weight:600}.pseudo-hint{font-size:.75rem;color:var(--text-secondary);margin:0}.question-count-selector{display:flex;gap:.5rem}.qcount-btn{flex:1;padding:.5rem 0;border:1px solid rgba(255,255,255,.15);border-radius:8px;background:#ffffff0d;color:var(--text-secondary);font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s,color .15s,border-color .15s}.qcount-btn:hover{background:#ffffff1a;color:var(--text-primary)}.qcount-btn--active{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-purple));border-color:transparent;color:#fff}.play-card-hint{margin-top:1rem;text-align:center;font-size:.8rem;color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:var(--radius-btn);font-family:inherit;font-size:1rem;font-weight:800;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition),opacity var(--transition);border:none;text-decoration:none}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--gradient-btn);color:#fff;box-shadow:0 4px 20px #7c3aed66}.btn-primary:hover{box-shadow:0 6px 28px #7c3aed99}.btn-secondary{background:#ffffff14;border:1.5px solid var(--border-glass);color:var(--text-primary)}.btn-secondary:hover{background:#ffffff1f}.btn-large{padding:1rem 2rem;font-size:1.1rem;width:100%}.btn-icon{font-size:1.1rem}.stats-section{padding:3rem 0 2rem}.stats-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1.5rem;text-align:center}.stat-item{padding:1.5rem 1rem}.stat-number{font-family:Orbitron,sans-serif;font-size:2.5rem;font-weight:900;line-height:1;margin-bottom:.5rem}.stat-label{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.features-section{padding:2rem 0}.section-title{text-align:center;font-family:Orbitron,sans-serif;font-size:1.5rem;font-weight:700;margin-bottom:2rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem}.feature-card{padding:1.75rem 1.5rem;transition:transform var(--transition),box-shadow var(--transition)}.feature-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px #00000080}.feature-icon{font-size:2rem;margin-bottom:.75rem}.feature-title{font-size:1rem;font-weight:800;margin-bottom:.5rem}.feature-desc{font-size:.875rem;color:var(--text-secondary);line-height:1.6}.ranks-section{padding:2rem 0 3rem}.ranks-grid{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}.rank-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.1rem;border-radius:999px;font-size:.85rem;font-weight:700;border:1.5px solid}.rank-xp{font-weight:400;opacity:.7;font-size:.8rem}.rank-0{background:#a0aec01a;border-color:#a0aec04d;color:#a0aec0}.rank-1{background:#06d6a01a;border-color:#06d6a04d;color:var(--accent-green)}.rank-2{background:#4cc9f01a;border-color:#4cc9f04d;color:var(--accent-blue)}.rank-3{background:#7c3aed1a;border-color:#7c3aed4d;color:#a78bfa}.rank-4{background:#ffca3a1a;border-color:#ffca3a4d;color:var(--accent-yellow)}.rank-5{background:#f7258526;border-color:#f7258566;color:var(--accent-pink)}.quiz-page{max-width:720px;margin:0 auto;padding:1rem 0;position:relative}.quiz-player-bar{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;margin-bottom:1.5rem;flex-wrap:wrap;gap:.5rem}.quiz-player-info{display:flex;align-items:center;gap:.75rem}.quiz-pseudo{font-weight:800;font-size:1rem}.quiz-rank-badge{font-size:.8rem;font-weight:700;background:#ffffff12;border-radius:999px;padding:.15rem .6rem}.quiz-player-stats{display:flex;gap:1rem}.stat-badge{font-size:.85rem;font-weight:700;color:var(--text-secondary)}.quiz-container{background:var(--bg-card);backdrop-filter:blur(10px);border:1px solid var(--border-glass);border-radius:var(--radius-card);padding:2rem;box-shadow:var(--shadow-card);position:relative}.quiz-progress-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.question-counter{font-size:.875rem;font-weight:700;color:var(--text-secondary)}.combo-display{font-size:.9rem;font-weight:800;color:var(--text-secondary);padding:.2rem .75rem;border-radius:999px;border:1.5px solid var(--border-glass);background:#ffffff0d;transition:all .3s ease}.combo-display.on-fire{color:var(--accent-orange);border-color:#ff6b3580;background:#ff6b351f;box-shadow:0 0 12px #ff6b354d;animation:pulse 1s ease infinite}.progress-bar-track{width:100%;height:8px;background:#ffffff14;border-radius:999px;overflow:hidden;margin-bottom:.75rem}.progress-bar-fill{height:100%;background:var(--gradient-main);border-radius:999px;transition:width .5s cubic-bezier(.4,0,.2,1)}.xp-bar-container{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.xp-display{font-size:.875rem;font-weight:800;color:var(--accent-yellow)}.combo-multiplier{font-size:.8rem;font-weight:800;color:var(--accent-green);background:#06d6a01a;border:1px solid rgba(6,214,160,.3);border-radius:999px;padding:.15rem .6rem}.question-area{text-align:center;margin-bottom:1.75rem}.question-prompt{font-size:1rem;font-weight:600;color:var(--text-secondary);margin-bottom:1rem}.question-display-value{display:flex;align-items:center;justify-content:center;min-height:80px}.display-value{font-family:Orbitron,sans-serif;font-size:clamp(1.8rem,5vw,3rem);font-weight:900;background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:.05em;animation:fadeIn .4s ease forwards}.choices-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1.5rem}.choice-btn{display:flex;align-items:center;gap:.75rem;padding:.9rem 1rem;background:#ffffff0d;border:1.5px solid var(--border-glass);border-radius:var(--radius-btn);color:var(--text-primary);font-family:inherit;font-size:.95rem;font-weight:700;cursor:pointer;transition:background var(--transition),border-color var(--transition),transform var(--transition),box-shadow var(--transition);text-align:left;width:100%}.choice-btn:hover:not(:disabled){background:#ffffff1a;border-color:var(--accent-blue);transform:translateY(-2px);box-shadow:0 4px 16px #4cc9f033}.choice-btn:disabled{cursor:not-allowed}.choice-letter{display:flex;align-items:center;justify-content:center;min-width:28px;height:28px;border-radius:8px;background:#ffffff14;font-size:.8rem;font-weight:800;flex-shrink:0}.choice-text{flex:1;word-break:break-word}.choice-btn.correct{background:#06d6a02e;border-color:var(--accent-green);box-shadow:0 0 16px #06d6a059;color:var(--accent-green)}.choice-btn.correct .choice-letter{background:var(--accent-green);color:#000}.choice-btn.incorrect{background:#ffa03226;border-color:#ff9800;box-shadow:0 0 12px #ff98004d;color:#ff9800}.choice-btn.incorrect .choice-letter{background:#ff9800;color:#000}.typed-input-area{display:flex;flex-direction:column;gap:.65rem;margin-top:.5rem}.typed-input-wrapper{display:flex;gap:.75rem;align-items:stretch}.typed-answer-input{flex:1;padding:.85rem 1.1rem;background:#ffffff12;border:2px solid var(--border-glass);border-radius:var(--radius-btn);color:var(--text-primary);font-family:Nunito,sans-serif;font-size:1.05rem;font-weight:600;outline:none;transition:border-color .2s,box-shadow .2s,background .2s}.typed-answer-input::placeholder{color:var(--text-secondary);font-weight:400}.typed-answer-input:focus{border-color:var(--accent-blue);background:#4cc9f00f;box-shadow:0 0 0 3px #4cc9f02e}.typed-answer-input:disabled{opacity:.7}.typed-answer-input.typed-correct{border-color:var(--accent-green);background:#06d6a01f;color:var(--accent-green)}.typed-answer-input.typed-incorrect{border-color:#ff9800;background:#ff98001a;color:#ff9800}.typed-submit-btn{flex-shrink:0;white-space:nowrap;padding:.85rem 1.5rem}.typed-hint{font-size:.8rem;color:var(--text-secondary);font-style:italic;margin:0}.question-timer-area{display:flex;align-items:center;gap:.6rem;margin:.5rem 0 .25rem}.question-timer-bar{flex:1;height:6px;background:#ffffff14;border-radius:3px;overflow:hidden}.question-timer-fill{height:100%;width:100%;background:var(--gradient-main);border-radius:3px;transition:width 15s linear}.question-timer-count{font-family:Orbitron,sans-serif;font-size:.85rem;font-weight:700;color:var(--text-secondary);min-width:2ch;text-align:right;transition:color .3s}.question-timer-area.warning .question-timer-fill{background:linear-gradient(90deg,#f9c74f,#f8961e)}.question-timer-area.warning .question-timer-count{color:#f9c74f}.question-timer-area.urgent .question-timer-fill{background:linear-gradient(90deg,#f94144,#f3722c)}.question-timer-area.urgent .question-timer-count{color:#f94144;animation:timerPulse .5s ease-in-out infinite alternate}@keyframes timerPulse{0%{transform:scale(1);opacity:1}to{transform:scale(1.25);opacity:.7}}.element-info-card{position:absolute;top:0;left:0;right:0;border-radius:var(--radius-card);background:#0a0a1ef7;border:1px solid rgba(76,201,240,.25);backdrop-filter:blur(16px);display:flex;flex-direction:column;gap:.85rem;padding:1.25rem 1.5rem 1rem;overflow-y:auto;z-index:10}.spelling-correction{display:flex;flex-direction:column;gap:.35rem;background:#ffd60014;border:1px solid rgba(255,214,0,.3);border-radius:var(--radius-lg);padding:.7rem 1rem}.spelling-row{display:flex;align-items:baseline;gap:.6rem}.spelling-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.07em;color:var(--text-secondary);font-weight:700;min-width:10ch;flex-shrink:0}.spelling-given{font-size:1rem;color:#ff9800;font-family:Orbitron,sans-serif;text-decoration:line-through;opacity:.8}.spelling-correct{font-size:1.1rem;font-weight:800;color:var(--accent-yellow);font-family:Orbitron,sans-serif;letter-spacing:.04em}.answer-verdict{font-size:.9rem;font-weight:700;padding:.35rem .75rem;border-radius:99px;align-self:flex-start;letter-spacing:.02em}.verdict-correct{background:#39ff1426;color:var(--accent-green);border:1px solid rgba(57,255,20,.3)}.verdict-incorrect{background:#ff980026;color:#ff9800;border:1px solid rgba(255,152,0,.3)}.verdict-fuzzy{background:#ffd60026;color:var(--accent-yellow);border:1px solid rgba(255,214,0,.3)}.info-element-header{display:flex;align-items:center;gap:1rem}.info-symbol-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:60px;height:60px;border-radius:14px;background:var(--gradient-main);font-family:Orbitron,sans-serif;flex-shrink:0;box-shadow:0 0 18px #4cc9f059}.info-symbol-large{font-size:1.5rem;font-weight:900;color:#fff;line-height:1}.info-atomic-number{font-size:.6rem;color:#ffffffb3;font-family:Orbitron,sans-serif}.info-element-meta{flex:1}.info-element-name{font-size:1.15rem;font-weight:700;color:var(--text-primary)}.info-fact-block{background:#4cc9f012;border:1px solid rgba(76,201,240,.22);border-radius:var(--radius-lg);padding:.9rem 1.1rem}.info-fact-title{font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-blue);margin-bottom:.4rem}.info-fact-text{font-size:1rem;color:var(--text-primary);line-height:1.6;font-style:italic;margin:0}.info-rows{display:flex;flex-direction:column;gap:.45rem}.info-row{display:flex;align-items:flex-start;gap:.6rem}.info-row-icon{font-size:.95rem;flex-shrink:0;margin-top:.15rem}.info-row-content{display:flex;flex-direction:column;gap:.05rem}.info-row-label{font-size:.65rem;text-transform:uppercase;letter-spacing:.07em;color:var(--text-secondary);font-weight:700}.info-row-text{font-size:.82rem;color:var(--text-primary);line-height:1.5}.info-card-footer{display:flex;align-items:center;gap:1rem;margin-top:.5rem;padding-top:.5rem;border-top:1px solid rgba(255,255,255,.06)}.info-timer-bar{flex:1;height:5px;background:#ffffff14;border-radius:3px;overflow:hidden}.info-timer-fill{height:100%;width:100%;background:var(--gradient-main);border-radius:3px;transition:width 12s linear}.timer-label{font-size:.7rem;color:var(--text-secondary);font-family:Orbitron,sans-serif;margin-left:.3rem}.info-next-btn{white-space:nowrap;font-size:.9rem;padding:.5rem 1.1rem}.fun-fact-card{display:flex;gap:.75rem;padding:1rem 1.25rem;background:#4cc9f014;border:1px solid rgba(76,201,240,.25);border-radius:var(--radius-btn);animation:fadeIn .4s ease forwards}.fun-fact-icon{font-size:1.25rem;flex-shrink:0;margin-top:.1rem}.fun-fact-text{font-size:.875rem;color:var(--accent-blue);line-height:1.6;font-style:italic}.xp-float-container{position:fixed;top:0;left:0;pointer-events:none;z-index:9999;width:100%;height:100%;overflow:hidden}.xp-float{position:absolute;font-family:Orbitron,sans-serif;font-size:1.1rem;font-weight:900;color:var(--accent-yellow);text-shadow:0 0 10px rgba(255,202,58,.7);pointer-events:none;animation:xpPop 1.2s ease forwards;white-space:nowrap}.idle-overlay{position:fixed;inset:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:100;backdrop-filter:blur(6px)}.idle-card{text-align:center;padding:2.5rem 2rem;max-width:340px;width:90%;display:flex;flex-direction:column;align-items:center;gap:.75rem;animation:slideUp .3s ease forwards}.idle-emoji{font-size:3rem;line-height:1}.idle-title{font-size:1.4rem;font-weight:800;color:var(--text-primary);margin:0}.idle-subtitle{font-size:.9rem;color:var(--text-secondary);margin:0}.idle-actions{display:flex;flex-direction:column;gap:.6rem;width:100%;margin-top:.5rem}.idle-actions .btn{width:100%;justify-content:center}.revenge-badge{font-size:.75rem;font-weight:700;letter-spacing:.05em;padding:2px 8px;border-radius:99px;background:linear-gradient(135deg,#ff6b35,#f72585);color:#fff;animation:pulse 1.2s ease-in-out infinite}.revenge-overlay{position:fixed;inset:0;z-index:200;background:#0d0d1ae0;backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:1rem}.revenge-card{max-width:400px;width:100%;padding:2.5rem 2rem;text-align:center;border:1px solid rgba(247,37,133,.4);box-shadow:0 0 40px #f7258533}.revenge-emoji{font-size:3.5rem;margin-bottom:.5rem}.revenge-title{font-size:1.8rem;font-weight:800;background:linear-gradient(135deg,#ff6b35,#f72585);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.75rem}.revenge-subtitle{color:var(--text-secondary);margin-bottom:1.25rem;line-height:1.6}.revenge-elements{list-style:none;padding:0;margin:0 0 1.5rem;display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center}.revenge-elements li{background:#f7258526;border:1px solid rgba(247,37,133,.3);border-radius:8px;padding:.25rem .6rem;font-size:.85rem;font-weight:600}.revenge-btn{width:100%;margin-top:.5rem;font-size:1.1rem}.game-over-overlay{position:fixed;inset:0;z-index:200;background:#0d0d1ad9;backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:1.5rem;animation:fadeIn .4s ease forwards}.game-over-card{max-width:500px;width:100%;padding:2.5rem 2rem;text-align:center;animation:slideIn .4s ease forwards}.game-over-header{margin-bottom:2rem}.game-over-emoji{font-size:4rem;margin-bottom:.75rem;animation:pulse 1.5s ease infinite}.game-over-title{font-family:Orbitron,sans-serif;font-size:1.6rem;font-weight:900}.game-over-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1.75rem}.result-stat{padding:1rem .5rem;background:#ffffff0d;border-radius:var(--radius-btn);border:1px solid var(--border-glass)}.result-stat-value{font-family:Orbitron,sans-serif;font-size:1.6rem;font-weight:900;background:var(--gradient-main);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:.35rem}.result-stat-label{font-size:.75rem;font-weight:600;color:var(--text-secondary)}.rank-summary{padding:1.25rem;margin-bottom:1.75rem;text-align:left}.rank-display{font-size:1.75rem;text-align:center;margin-bottom:.75rem}.xp-progress-labels{display:flex;justify-content:space-between;margin-bottom:.35rem}.xp-label{font-size:.75rem;font-weight:700;color:var(--text-secondary)}.xp-progress-track{width:100%;height:10px;background:#ffffff14;border-radius:999px;overflow:hidden;margin-bottom:.5rem}.xp-progress-fill{height:100%;background:var(--gradient-main);border-radius:999px;transition:width 1s cubic-bezier(.4,0,.2,1)}.rank-name-display{text-align:center;font-size:.875rem;font-weight:700;color:var(--text-secondary)}.game-over-actions{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.game-over-actions .btn{flex:1;min-width:140px}.leaderboard-page{max-width:720px;margin:0 auto}.leaderboard-header{text-align:center;padding:2rem 0 1.5rem}.page-title{font-family:Orbitron,sans-serif;font-size:2rem;font-weight:900;margin-bottom:.5rem}.page-subtitle{color:var(--text-secondary);font-size:1rem}.tab-switcher{display:flex;gap:.5rem;margin-bottom:1.5rem;background:#ffffff0a;border:1px solid var(--border-glass);border-radius:var(--radius-card);padding:.4rem}.tab-btn{flex:1;padding:.65rem 1rem;border-radius:10px;font-family:inherit;font-size:.9rem;font-weight:700;cursor:pointer;color:var(--text-secondary);background:transparent;border:none;transition:all var(--transition)}.tab-btn.tab-active{background:var(--gradient-btn);color:#fff;box-shadow:0 2px 12px #7c3aed66}.leaderboard-table-container{animation:fadeIn .4s ease forwards}.leaderboard-loading{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:3rem;color:var(--text-secondary);font-weight:600}.loading-spinner{width:24px;height:24px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--accent-blue);border-radius:50%;animation:orbit .8s linear infinite}.leaderboard-table{width:100%;border-collapse:collapse;border-radius:var(--radius-card);overflow:hidden}.leaderboard-table thead tr{background:#ffffff0f}.leaderboard-table th{padding:.75rem 1rem;text-align:left;font-size:.8rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.leaderboard-table td{padding:.85rem 1rem;font-size:.9rem;font-weight:600;border-top:1px solid rgba(255,255,255,.05)}.leaderboard-table tbody tr{background:#ffffff05;transition:background var(--transition)}.leaderboard-table tbody tr:hover{background:#ffffff0f}.leaderboard-table tbody tr.is-me{background:#4cc9f014;border:1px solid rgba(76,201,240,.25)}.rank-cell{font-family:Orbitron,sans-serif;font-weight:900;text-align:center;width:48px}.rank-cell.gold{color:gold}.rank-cell.silver{color:silver}.rank-cell.bronze{color:#cd7f32}.pseudo-cell{display:flex;align-items:center;gap:.5rem}.score-cell{font-family:Orbitron,sans-serif;font-weight:700;color:var(--accent-yellow)}.streak-cell{color:var(--accent-orange);font-weight:700}.leaderboard-empty{text-align:center;padding:3rem;color:var(--text-secondary);font-weight:600}.leaderboard-empty-icon{font-size:2.5rem;margin-bottom:.75rem}.my-position-card{margin-top:1.5rem;padding:1rem 1.5rem;display:flex;align-items:center;justify-content:center;gap:1rem}.my-position-label{font-weight:600;color:var(--text-secondary);font-size:.9rem}.my-position-text{font-weight:800;font-size:1rem;color:var(--accent-blue)}.error-page{max-width:480px;margin:4rem auto;text-align:center}.error-card{padding:3rem 2rem}.error-icon{font-size:3rem;margin-bottom:1rem}.error-title{font-size:1.4rem;font-weight:800;margin-bottom:1rem}.error-id{font-size:.8rem;color:var(--text-secondary);margin-bottom:1rem}.error-id code{background:#ffffff0f;padding:.2rem .5rem;border-radius:6px}.error-message{color:var(--text-secondary);margin-bottom:2rem;font-size:.95rem}.error-actions{display:flex;justify-content:center}.footer{margin-top:auto;border-top:1px solid var(--border-glass);background:#ffffff05}.footer-container{max-width:1100px;margin:0 auto;padding:1.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:.85rem;color:var(--text-secondary)}.footer-links{display:flex;gap:1.25rem}.footer-link{color:var(--text-secondary);transition:color var(--transition)}.footer-link:hover{color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}@keyframes orbit{0%{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}@keyframes xpPop{0%{opacity:0;transform:translateY(0) scale(.5)}20%{opacity:1;transform:translateY(-20px) scale(1.1)}80%{opacity:1;transform:translateY(-60px) scale(1)}to{opacity:0;transform:translateY(-90px) scale(.9)}}@keyframes spinLoader{to{transform:rotate(360deg)}}@keyframes slideUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-5px)}80%{transform:translate(5px)}}.shake{animation:shake .4s ease}@media(max-width:640px){.nav-links{gap:.75rem}.nav-link{font-size:.85rem}.nav-player-info{max-width:100px;font-size:.75rem}.hero{padding:2.5rem 0 2rem}.atom-decoration{display:none}.play-card{padding:1.5rem 1.25rem}.choices-grid{grid-template-columns:1fr}.quiz-container{padding:1.25rem}.game-over-stats{grid-template-columns:repeat(3,1fr);gap:.5rem}.result-stat-value{font-size:1.2rem}.game-over-card{padding:2rem 1.25rem}.features-grid{grid-template-columns:1fr}.stats-container{grid-template-columns:repeat(2,1fr)}.leaderboard-table td,.leaderboard-table th{padding:.6rem .5rem;font-size:.8rem}.leaderboard-table-container{overflow-x:auto}.quiz-player-info{min-width:0;overflow:hidden}.quiz-rank-badge{max-width:9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quiz-player-stats{flex-wrap:wrap;gap:.5rem}.footer-container{flex-direction:column;text-align:center}}@media(min-width:641px)and (max-width:900px){.features-grid{grid-template-columns:1fr 1fr}.atom-decoration{display:none}}.footer-version{opacity:.6;font-size:.75rem;font-family:monospace}.atomic-structure{display:flex;justify-content:center;gap:.75rem;margin:.5rem 0}.atomic-particle{display:flex;flex-direction:column;align-items:center;gap:.2rem;padding:.5rem .75rem;border-radius:.75rem;min-width:4rem;font-weight:700}.particle-count{font-size:1.4rem;line-height:1}.particle-label{font-size:.65rem;opacity:.85;text-transform:uppercase;letter-spacing:.04em}.proton-particle{background:#e74c3c2e;border:1px solid rgba(231,76,60,.45);color:#e74c3c}.neutron-particle{background:#95a5a62e;border:1px solid rgba(149,165,166,.45);color:#95a5a6}.electron-particle{background:#3498db2e;border:1px solid rgba(52,152,219,.45);color:#3498db}.info-atomic-compact{font-size:.72rem;opacity:.75;letter-spacing:.03em;margin-top:.15rem}.info-atomic-compact span{font-weight:700}.info-symbol-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:3.5rem;max-width:4rem}.info-symbol-large{font-size:2.2rem;line-height:1;font-weight:800}.info-atomic-number{font-size:.65rem;opacity:.7;margin-top:.1rem}..info-row-text{overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.display-value--symbol{font-size:clamp(2.8rem,8vw,5rem)}.info-bonus-label{font-size:.75rem;color:var(--accent-yellow);font-weight:800;animation:fadeIn .3s ease forwards}.info-next-btn.bonus-ready{box-shadow:0 4px 24px #4cc9f080;animation:pulse 1.5s ease-in-out infinite}@media(max-width:480px){.typed-input-wrapper{flex-direction:column}.typed-submit-btn{width:100%}}@media(max-width:1280px){.hero{padding:.5rem 0 .25rem}.hero-subtitle{margin-bottom:.75rem}}@media(max-width:640px){.hero{padding:.75rem 0 .5rem}.hero-subtitle{margin-bottom:.75rem}.streak-header{overflow:hidden;max-width:2.5rem}.streak-header span{display:none}.streak-header:after{content:"\1f525"}}.score-cell--zero{color:var(--text-secondary)!important}.quiz-container.quiz-active-info{padding:0}.quiz-container.quiz-active-info>*:not(.element-info-card){display:none!important}.quiz-container.quiz-active-info .element-info-card{position:relative;top:auto;left:auto;right:auto}@media(max-width:1280px){.atom-decoration{display:none}}@media(max-width:480px){.rank-name-cell{max-width:5rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}@media(max-width:480px){.leaderboard-table th:nth-child(4),.leaderboard-table td:nth-child(4){display:none}}.info-symbol-badge{padding:4px 8px}.info-symbol-wide{font-size:1.5rem}.info-atomic-number{margin-top:2px}.question-count-selector{display:grid;grid-template-columns:repeat(6,1fr);gap:.5rem}.qcount-btn:nth-child(-n+3){grid-column:span 2}.qcount-btn:nth-child(n+4){grid-column:span 3}.qcount-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.1rem;padding:.4rem .3rem}.qcount-emoji{font-size:.9rem;line-height:1}.qcount-name{font-size:.75rem;font-weight:800;color:var(--text-primary)}.qcount-count{font-size:.62rem;color:var(--text-secondary);font-weight:600}.qcount-btn--active .qcount-name{color:#fff}.qcount-btn--active .qcount-count{color:#ffffffbf}@media(max-width:640px){.question-count-selector{grid-template-columns:repeat(2,1fr)}.qcount-btn:nth-child(-n+3){grid-column:span 1}.qcount-btn:nth-child(n+4){grid-column:span 1}.qcount-btn:last-child{grid-column:span 2}}.display-value--symbol{font-size:clamp(4.5rem,14vw,7.5rem)}@media(max-width:640px){.choice-btn{padding:.55rem .75rem}}@media(max-width:480px){.info-next-btn{position:relative}.info-next-btn .info-bonus-label{position:absolute;bottom:calc(100% + .3rem);left:50%;transform:translate(-50%);white-space:nowrap;font-size:.72rem;pointer-events:none}}@media(max-width:640px){.play-card-header,.pseudo-hint,.play-card-hint{display:none}.play-card{padding:1rem}.play-card-body{gap:.5rem}.hero-title{margin-bottom:.5rem}}@media(max-width:1280px){.hero-title{margin-bottom:.6rem}.play-card-header{margin-bottom:.75rem}.play-card{padding:1.25rem}.play-card-body{gap:.5rem}}@media(max-width:640px){.play-card-header{display:flex!important;margin-bottom:.5rem}.play-card-icon{font-size:1.1rem}.play-card-title{font-size:.9rem}.pseudo-hint{display:block!important;font-size:.73rem;margin:.1rem 0 0}.hero-title{font-size:1.6rem\!important;margin-bottom:.25rem}}@media(min-width:641px)and (max-width:1280px){.hero-title{font-size:2.2rem}}@media(max-width:640px){.play-card-hint{display:block!important;font-size:.72rem}}.pseudo-hint+.input-label{margin-top:.5rem}.info-next-btn{position:relative}.info-next-btn .info-bonus-label{position:absolute;bottom:calc(100% + .3rem);left:50%;transform:translate(-50%);white-space:nowrap;font-size:.72rem;pointer-events:none}.timer-label{min-width:2rem;text-align:right}@media(max-width:640px){.hero-title br{display:none}}@media(max-width:640px){.hero-subtitle{font-size:.95rem}}.info-bonus-label{background:#4cc9f01f;border:1px solid rgba(76,201,240,.35);border-radius:20px;padding:.15rem .6rem;font-weight:700}.info-next-btn .timer-label{color:#ffffffbf;font-weight:600}.navbar{border-bottom:1px solid transparent;background-clip:padding-box;box-shadow:0 1px #4cc9f033,0 2px #7c3aed1a}.rank-sub{display:none}@media(max-width:480px){.rank-sub{display:block;font-size:.68rem;color:var(--text-secondary);margin-top:.1rem;font-style:italic}}.info-timer-bar{background:#ffffff26}@media(min-width:1280px){.quiz-container{border-color:#ffffff26}}
