body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#ff8c00,orange 50%,#ffb84d);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.App{background:linear-gradient(135deg,#ff8c00,orange 50%,#ffb84d);min-height:100vh}.learning-dashboard{min-height:100vh;padding:20px}.app-header{align-items:center;background:#fffffff2;border-radius:20px;box-shadow:0 10px 30px #0000001a;display:flex;justify-content:space-between;margin-bottom:30px;padding:20px}.app-header h1{color:#8b5cf6;font-size:2rem;margin:0}.user-info{align-items:center;display:flex;gap:15px}.user-info span{color:#374151;font-weight:600}.user-info button{background:#fff;border:2px solid #e5e7eb;border-radius:8px;cursor:pointer;padding:8px 16px;transition:all .3s ease}.user-info button:hover{border-color:#8b5cf6;transform:translateY(-1px)}.learning-main{margin:0 auto;max-width:1600px}.navigation-controls{margin-top:30px;text-align:center}.next-topic-button{background:linear-gradient(135deg,#10b981,#059669);border:none;border-radius:12px;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;padding:15px 30px;transition:all .3s ease}.next-topic-button:hover{box-shadow:0 10px 20px #10b98166;transform:translateY(-2px)}@media (max-width:768px){.learning-dashboard{padding:10px}.app-header{flex-direction:column;gap:15px;margin-bottom:20px;padding:15px}.app-header h1{font-size:1.5rem}.logo-title{flex-direction:column!important;gap:10px!important;text-align:center}.logo-title img{height:50px!important;width:50px!important}.user-info{flex-direction:column;gap:10px;width:100%}.user-info button{padding:10px;width:100%}.next-topic-button{font-size:1rem;padding:12px 20px;width:100%}}@media (min-width:769px) and (max-width:1024px){.app-header{padding:18px}.app-header h1{font-size:1.75rem}.user-info{gap:12px}}.landing-page{min-height:100vh;overflow-x:hidden}.landing-nav{background:#0000;left:0;position:fixed;right:0;top:0;transition:all .3s ease;z-index:1000}.landing-nav.scrolled{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;box-shadow:0 2px 20px #0000001a}.nav-container{justify-content:space-between;margin:0 auto;max-width:1200px;padding:1rem 1.5rem}.nav-container,.nav-logo{align-items:center;display:flex}.nav-logo{color:#ff8c00;font-size:1.25rem;font-weight:700;gap:.5rem;transition:all .3s ease}.nav-logo:hover{opacity:.8;transform:scale(1.05)}.nav-logo-img{height:40px;object-fit:contain;width:40px}.logo-icon{font-size:1.5rem}.nav-login-btn{background:#fff;border:2px solid #ff8c00;border-radius:25px;color:#ff8c00;cursor:pointer;font-weight:600;padding:.5rem 1.5rem;transition:all .3s ease}.nav-login-btn:hover{background:#ff8c00;box-shadow:0 4px 12px #ff8c004d;color:#fff;transform:translateY(-2px)}.hero-section{align-items:center;background:linear-gradient(135deg,#ff8c00,orange);display:flex;justify-content:center;min-height:100vh;padding:2rem 1.5rem;position:relative}.hero-background{background:linear-gradient(135deg,#ff8c00e6,#ffa500e6),url("data:image/svg+xml;charset=utf-8,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='a' width='40' height='40' patternUnits='userSpaceOnUse'%3E%3Cpath d='M40 0H0v40' fill='none' stroke='rgba(255,255,255,0.1)'/%3E%3C/pattern%3E%3C/defs%3E%3Cpath fill='url(%23a)' d='M0 0h100v100H0z'/%3E%3C/svg%3E");bottom:0;left:0;opacity:.3;position:absolute;right:0;top:0}.hero-content{max-width:800px;position:relative;text-align:center;z-index:1}.hero-logo{margin-bottom:2rem}.logo-circle{align-items:center;animation:float 3s ease-in-out infinite;background:#fff;border-radius:50%;box-shadow:0 20px 60px #0000004d;display:flex;height:150px;justify-content:center;margin:0 auto 1.5rem;width:150px}.hero-logo-img{height:100%;object-fit:contain;padding:15px;width:100%}.logo-emoji{font-size:5rem}.hero-title{color:#fff;font-size:3.5rem;font-weight:800;margin-bottom:1rem;text-shadow:0 4px 20px #0003}.hero-subtitle{color:#fffffff2;font-size:1.5rem;font-weight:300}.hero-description{color:#ffffffe6;line-height:1.6}.cta-button,.hero-description{font-size:1.125rem;margin:2rem 0}.cta-button{align-items:center;background:#fff;border:none;border-radius:50px;box-shadow:0 10px 30px #0003;color:#ff8c00;cursor:pointer;display:inline-flex;font-weight:700;gap:.75rem;padding:1rem 2.5rem;transition:all .3s ease}.cta-button:hover{box-shadow:0 15px 40px #0000004d;transform:translateY(-3px) scale(1.05)}.cta-arrow,.cta-icon{font-size:1.5rem}.cta-arrow{transition:transform .3s ease}.cta-button:hover .cta-arrow{transform:translateX(5px)}.hero-stats{display:flex;flex-wrap:wrap;gap:3rem;justify-content:center;margin-top:3rem}.stat-item{text-align:center}.stat-number{color:#fff;font-size:2.5rem;font-weight:800;margin-bottom:.5rem}.stat-label{color:#fffc;font-size:.875rem;letter-spacing:1px;text-transform:uppercase}.features-section{background:#fff;padding:5rem 1.5rem}.section-container{margin:0 auto;max-width:1200px}.section-title{color:#1f2937;font-size:2.5rem;font-weight:800;margin-bottom:1rem;text-align:center}.section-subtitle{color:#6b7280;font-size:1.125rem;margin-bottom:3rem;text-align:center}.features-grid{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.feature-card{background:linear-gradient(135deg,#fff8f0,#fff);border:2px solid #e5e7eb;border-radius:20px;padding:2rem;text-align:center;transition:all .3s ease}.feature-card:hover{border-color:#ff8c00;box-shadow:0 20px 40px #ff8c0026;transform:translateY(-10px)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-title{color:#1f2937;font-size:1.25rem;font-weight:700;margin-bottom:.75rem}.feature-description{color:#6b7280;line-height:1.6}.how-it-works-section{background:linear-gradient(135deg,#fff8f0,#ffe8cc);padding:5rem 1.5rem}.steps-container{align-items:center;display:flex;flex-wrap:wrap;gap:2rem;justify-content:center;margin-top:3rem}.step-card{background:#fff;border-radius:20px;box-shadow:0 10px 30px #0000001a;flex:1 1;max-width:300px;min-width:250px;padding:2rem;text-align:center}.step-number{align-items:center;background:linear-gradient(135deg,#ff8c00,orange);border-radius:50%;color:#fff;display:flex;font-size:1.5rem;font-weight:800;height:60px;justify-content:center;margin:0 auto 1.5rem;width:60px}.step-arrow{color:#ff8c00;display:none;font-size:2rem}.step-card h3{color:#1f2937;font-size:1.25rem;font-weight:700;margin-bottom:.75rem}.step-card p{color:#6b7280;line-height:1.6}.team-section{background:#fff;padding:5rem 1.5rem}.team-grid{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-top:3rem}.team-card{background:linear-gradient(135deg,#fff8f0,#fff);border:2px solid #e5e7eb;border-radius:20px;padding:2rem;text-align:center;transition:all .3s ease}.team-card:hover{border-color:#ff8c00;box-shadow:0 20px 40px #ff8c0026;transform:translateY(-10px)}.team-avatar{align-items:center;background:linear-gradient(135deg,#ff8c00,orange);border:3px solid orange;border-radius:50%;display:flex;font-size:3rem;height:100px;justify-content:center;margin:0 auto 1rem;overflow:hidden;width:100px}.team-avatar-img{height:100%;object-fit:cover;width:100%}.team-name{color:#1f2937;font-size:1.25rem;font-weight:700;margin-bottom:.5rem}.team-role{color:#ff8c00;font-weight:600}.final-cta-section{background:linear-gradient(135deg,#ff8c00,orange);padding:5rem 1.5rem;text-align:center}.cta-content h2{color:#fff;font-size:2.5rem;font-weight:800;margin-bottom:1rem}.cta-content p{color:#ffffffe6;font-size:1.125rem;margin-bottom:2rem}.cta-button-large{background:#fff;border:none;border-radius:50px;box-shadow:0 10px 30px #0003;color:#ff8c00;cursor:pointer;font-size:1.25rem;font-weight:700;padding:1.25rem 3rem;transition:all .3s ease}.cta-button-large:hover{box-shadow:0 15px 40px #0000004d;transform:translateY(-3px) scale(1.05)}.landing-footer{background:#1f2937;padding:3rem 1.5rem;text-align:center}.footer-content{margin:0 auto;max-width:1200px}.footer-logo{align-items:center;color:#fff;display:inline-flex;font-size:1.25rem;font-weight:700;gap:.5rem;margin-bottom:1rem}.footer-logo-img{height:40px;object-fit:contain;width:40px}.footer-text{color:#9ca3af;line-height:1.6;margin-bottom:1.5rem}.footer-links{color:#6b7280;font-size:.875rem}@media (max-width:768px){.nav-container{padding:.75rem 1rem}.nav-logo{font-size:1rem}.logo-icon{font-size:1.25rem}.nav-login-btn{font-size:.875rem;padding:.4rem 1rem}.hero-section{padding:6rem 1rem 3rem}.logo-circle{height:120px;width:120px}.logo-emoji{font-size:4rem}.hero-title{font-size:2rem}.hero-subtitle{font-size:1.125rem}.cta-button,.hero-description{font-size:1rem}.cta-button{padding:.875rem 2rem}.hero-stats{gap:2rem}.section-title,.stat-number{font-size:2rem}.section-subtitle{font-size:1rem}.features-section,.final-cta-section,.how-it-works-section,.team-section{padding:3rem 1rem}.features-grid{gap:1.5rem;grid-template-columns:1fr}.steps-container{flex-direction:column;gap:1.5rem}.step-arrow{display:none}.team-grid{gap:1.5rem;grid-template-columns:1fr}.cta-content h2{font-size:1.75rem}.cta-content p{font-size:1rem}.cta-button-large{font-size:1rem;padding:1rem 2rem}}@media (min-width:769px) and (max-width:1024px){.hero-title{font-size:3rem}.features-grid,.team-grid{grid-template-columns:repeat(2,1fr)}.step-arrow{display:block}}@media (min-width:1025px){.step-arrow{display:block}}.login-container{align-items:center;background:linear-gradient(135deg,#ff8c00,orange 50%,#ffb84d);display:flex;justify-content:center;min-height:100vh;padding:1rem}.login-card{animation:slideIn .5s ease-out;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-radius:20px;box-shadow:0 20px 40px #0000004d;max-width:450px;padding:2.5rem;width:100%}.login-logo{margin-bottom:1.5rem;text-align:center}.login-logo-img{height:80px;object-fit:contain;width:80px}.login-title{color:#8b5cf6;font-size:2rem;font-weight:700;margin-bottom:.5rem;text-align:center}.login-subtitle{color:#6b7280;font-size:1rem;margin-bottom:2rem;text-align:center}.error-message{animation:shake .3s ease;background:#fee2e2;border:2px solid #fca5a5;border-radius:10px;color:#dc2626;font-size:.875rem;font-weight:600;margin-bottom:1rem;padding:.75rem 1rem;text-align:center}.login-form{gap:1.25rem}.input-group,.login-form{display:flex;flex-direction:column}.input-group{gap:.5rem}.input-group label{color:#374151;font-size:.9rem;font-weight:600}.input-group input{background:#fff;border:2px solid #e5e7eb;border-radius:12px;font-size:1rem;padding:12px 16px;transition:all .3s ease}.input-group input:focus{border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf61a;outline:none}.login-button{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border:none;border-radius:12px;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;margin-top:1rem;padding:14px;transition:all .3s ease}.login-button:hover{box-shadow:0 10px 20px #8b5cf666;transform:translateY(-2px)}.login-button:active{transform:translateY(0)}.login-footer{color:#6b7280;margin-top:1.5rem;text-align:center}.signup-link{color:#8b5cf6;cursor:pointer;font-weight:600;text-decoration:underline;transition:color .3s ease}.signup-link:hover{color:#7c3aed}@media (max-width:480px){.login-card{padding:1.5rem}.login-title{font-size:1.5rem}.login-subtitle{font-size:.875rem}.input-group input{font-size:.9rem;padding:10px 14px}.login-button{font-size:1rem;padding:12px}}@media (min-width:481px) and (max-width:768px){.login-card{padding:2rem}}.preferences-container{align-items:center;background:linear-gradient(135deg,#ff8c00,orange 50%,#ffb84d);display:flex;justify-content:center;min-height:100vh;padding:20px}.preferences-card{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-radius:20px;box-shadow:0 20px 40px #0000004d;max-width:600px;padding:40px;width:100%}.preferences-logo{margin-bottom:1.5rem;text-align:center}.preferences-logo-img{height:80px;object-fit:contain;width:80px}.preferences-title{color:#8b5cf6;font-size:2rem;font-weight:700;margin-bottom:8px;text-align:center}.preferences-subtitle{color:#6b7280;font-size:1rem;margin-bottom:32px;text-align:center}.preferences-form{display:flex;flex-direction:column;gap:32px}.preference-group h3{color:#374151;font-size:1.2rem;margin-bottom:16px}.theme-options{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(2,1fr)}.theme-option{align-items:center;background:#fff;border:2px solid #e5e7eb;border-radius:12px;cursor:pointer;display:flex;flex-direction:column;padding:16px;transition:all .3s ease}.theme-option.selected{background:#8b5cf60d;border-color:#8b5cf6}.theme-option:hover{box-shadow:0 5px 15px #0000001a;transform:translateY(-2px)}.theme-icon{border-radius:50%;height:40px;margin-bottom:8px;width:40px}.theme-icon.adventure{background:linear-gradient(135deg,#10b981,#059669)}.theme-icon.sci-fi{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}.theme-icon.mystery{background:linear-gradient(135deg,#6b7280,#4b5563)}.theme-icon.fantasy{background:linear-gradient(135deg,#f59e0b,#d97706)}.level-options,.path-options{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.level-option,.path-option{background:#fff;border:2px solid #e5e7eb;border-radius:12px;cursor:pointer;font-weight:600;padding:16px;text-align:center;transition:all .3s ease}.level-option.selected,.path-option.selected{background:#8b5cf60d;border-color:#8b5cf6}.level-option:hover,.path-option:hover{box-shadow:0 5px 15px #0000001a;transform:translateY(-2px)}.subtopic-options{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(2,1fr)}.subtopic-option{background:#fff;border:2px solid #e5e7eb;border-radius:8px;cursor:pointer;font-size:.9rem;padding:12px;text-align:center;transition:all .3s ease}.subtopic-option.selected{background:#8b5cf60d;border-color:#8b5cf6}.subtopic-option:hover{transform:translateY(-1px)}.start-journey-button{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border:none;border-radius:12px;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;margin-top:16px;padding:16px;transition:all .3s ease}.start-journey-button:hover:not(:disabled){box-shadow:0 10px 20px #8b5cf666;transform:translateY(-2px)}.start-journey-button:disabled{background:#9ca3af;box-shadow:none;cursor:not-allowed;transform:none}.dsa-visualizer{background:#fff;border:1px solid #e5e7eb;border-radius:20px;box-shadow:0 10px 40px #0000001a;display:flex;flex-direction:column;height:100%;max-height:900px;overflow:hidden;padding:25px}.visualizer-header{align-items:center;border-bottom:2px solid #e5e7eb;display:flex;justify-content:space-between;margin-bottom:20px;padding-bottom:15px}.visualizer-header h3{color:#1f2937;font-size:1.5rem;font-weight:700;margin:0}.step-indicator{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:20px;color:#fff;font-size:.85rem;font-weight:600;padding:6px 12px}.visualization-area{background:#f8fafc;border:2px dashed #e5e7eb;border-radius:15px;margin-bottom:20px;min-height:250px;overflow:hidden;padding:40px 30px}.array-visualization,.visualization-area{align-items:center;display:flex;justify-content:center;position:relative}.array-visualization{flex-wrap:nowrap;gap:15px;max-width:100%;width:100%}.array-element{flex-direction:column;flex-shrink:0;transition:all .5s ease}.array-element,.element-value{align-items:center;display:flex;position:relative}.element-value{background:#fff;border:3px solid #8b5cf6;border-radius:10px;box-shadow:0 2px 8px #0000001a;color:#1f2937;font-size:1.5rem;font-weight:700;height:70px;justify-content:center;overflow:visible;transition:all .3s ease;width:70px;z-index:5}.element-value:before{background:linear-gradient(45deg,#0000,#8b5cf61a,#0000);content:"";height:200%;left:-50%;position:absolute;top:-50%;transform:rotate(45deg);transition:all .5s ease;width:200%}.array-element.highlighted .element-value{animation:pulse-glow 1.5s ease-in-out infinite;background:linear-gradient(135deg,#10b981,#059669);border-color:#10b981;box-shadow:0 8px 20px #10b98166;color:#fff;transform:scale(1.2) translateY(-5px);z-index:10}.array-element.highlighted .element-value:before{animation:shine 1s ease-in-out infinite}.array-element.animating{animation:bounce .5s ease}.element-index{color:#6b7280;font-size:.85rem;font-weight:600;margin-top:12px;white-space:nowrap}.highlight-indicator{height:70px;left:0;top:0;width:70px;z-index:15}.glow-ring,.highlight-indicator{pointer-events:none;position:absolute}.glow-ring{animation:glow-pulse 1.5s ease-in-out infinite;border:3px solid #10b981;border-radius:12px;box-shadow:0 0 20px #10b98180;height:calc(100% + 16px);left:-8px;top:-8px;width:calc(100% + 16px)}.active-marker{animation:bounce-marker .6s ease-in-out infinite;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3));font-size:1.4rem;position:absolute;right:-12px;top:-12px;z-index:25}.animation-overlay{align-items:center;bottom:0;display:flex;justify-content:center;left:0;pointer-events:none;position:absolute;right:0;top:0}.sparkle-effect{display:flex;gap:20px}.sparkle-effect span{animation:sparkle 1s ease-in-out infinite;font-size:2rem;opacity:0}.sparkle-effect span:first-child{animation-delay:0s}.sparkle-effect span:nth-child(2){animation-delay:.2s}.sparkle-effect span:nth-child(3){animation-delay:.4s}.linked-list-visualization{align-items:center;display:flex;gap:10px;padding:20px}.node-container{align-items:center;animation:slide-in .5s ease-out backwards;display:flex;gap:10px}.linked-node{background:#fff;border:3px solid #8b5cf6;border-radius:12px;box-shadow:0 4px 12px #0000001a;display:flex;gap:15px;padding:15px 20px;position:relative;transition:all .4s ease}.linked-node:before{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:12px;content:"";inset:-3px;opacity:0;position:absolute;transition:opacity .3s ease;z-index:-1}.linked-node.highlighted{background:linear-gradient(135deg,#10b981,#059669);border-color:#10b981;box-shadow:0 12px 30px #10b98166;transform:scale(1.1)}.linked-node.highlighted:before{opacity:1}.linked-node.highlighted .data-label,.linked-node.highlighted .node-next,.linked-node.highlighted .node-value,.linked-node.highlighted .pointer-label{color:#fff}.node-data-section,.node-pointer-section{align-items:center;display:flex;flex-direction:column;gap:5px}.data-label,.pointer-label{color:#6b7280;font-size:.7rem;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.node-value{color:#1f2937;font-size:1.8rem;font-weight:700;min-width:40px;text-align:center}.node-next{color:#8b5cf6;font-size:1.5rem;font-weight:700}.node-indicator{align-items:center;display:flex;flex-direction:column;gap:2px;left:50%;position:absolute;top:-35px;transform:translateX(-50%)}.indicator-arrow{animation:bounce-arrow .6s ease-in-out infinite;font-size:1.5rem}.indicator-text{background:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;color:#10b981;font-size:.75rem;font-weight:700;padding:2px 8px}.arrow-connector{align-items:center;display:flex}@keyframes pulse-glow{0%,to{box-shadow:0 8px 20px #10b98166}50%{box-shadow:0 12px 30px #10b981b3}}@keyframes shine{0%{transform:translateX(-100%) rotate(45deg)}to{transform:translateX(100%) rotate(45deg)}}@keyframes glow-pulse{0%,to{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}@keyframes bounce-marker{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}@keyframes sparkle{0%,to{opacity:0;transform:scale(.5) rotate(0deg)}50%{opacity:1;transform:scale(1.2) rotate(180deg)}}@keyframes slide-in{0%{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}@keyframes bounce-arrow{0%,to{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-5px)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes bounce-in{0%{opacity:0;transform:scale(.3)}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes pulse-animation{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.tree-visualization{display:flex;justify-content:center;padding:20px}.tree-node{align-items:center;display:flex;flex-direction:column;gap:20px}.tree-children{display:flex;gap:40px;position:relative}.node{align-items:center;background:#8b5cf6;border:3px solid #fff;border-radius:50%;box-shadow:0 4px 12px #00000026;color:#fff;display:flex;font-size:1.2rem;font-weight:700;height:50px;justify-content:center;transition:all .3s ease;width:50px}.node.highlighted{background:#10b981;box-shadow:0 8px 20px #10b98166;transform:scale(1.2)}.graph-visualization{align-items:center;display:flex;justify-content:center}.explanation-box{align-items:center;color:#92400e;display:flex;font-size:1rem;font-weight:500;gap:12px;line-height:1.6;margin-bottom:20px;padding:15px 20px}.explanation-icon{flex-shrink:0;font-size:1.5rem}.code-section{background:#1f2937;border-radius:12px;display:flex;flex:1 1;flex-direction:column;margin-bottom:20px;max-height:750px;overflow:hidden}.code-header{align-items:center;background:#374151;color:#fff;display:flex;flex-shrink:0;font-size:.95rem;font-weight:600;gap:10px;padding:12px 18px}.code-icon{font-size:1.3rem}.code-block{margin:0;max-height:700px;overflow-x:auto;overflow-y:auto;padding:25px}.code-block::-webkit-scrollbar{height:10px;width:10px}.code-block::-webkit-scrollbar-track{background:#111827;border-radius:5px}.code-block::-webkit-scrollbar-thumb{background:#4b5563;border-radius:5px}.code-block::-webkit-scrollbar-thumb:hover{background:#6b7280}.code-block code{word-wrap:break-word;color:#10b981;display:block;font-family:Consolas,Monaco,Courier New,monospace;font-size:.95rem;letter-spacing:.3px;line-height:1.8;white-space:pre-wrap;word-break:break-word}.controls{display:flex;gap:10px;justify-content:center;margin-bottom:15px}.control-btn{background:#fff;border:2px solid #e5e7eb;border-radius:10px;color:#374151;cursor:pointer;font-size:.95rem;font-weight:600;padding:10px 20px;transition:all .3s ease}.control-btn:hover:not(:disabled){box-shadow:0 5px 15px #0000001a;transform:translateY(-2px)}.control-btn:disabled{cursor:not-allowed;opacity:.4}.reset-btn:hover:not(:disabled){border-color:#ef4444;color:#ef4444}.prev-btn:hover:not(:disabled){border-color:#8b5cf6;color:#8b5cf6}.next-btn:hover:not(:disabled){background:#10b981;border-color:#10b981;color:#fff}.progress-bar{height:8px}.array-element{animation:fadeIn .3s ease}@media (max-width:768px){.array-visualization{gap:8px}.element-value{font-size:1.2rem;height:50px;width:50px}.controls{flex-wrap:wrap}.control-btn{flex:1 1;min-width:100px}.code-block code{font-size:.8rem}}.quiz-container{background:#fff;border:2px solid #e5e7eb;border-radius:20px;box-shadow:0 15px 50px #00000026;margin:20px auto;max-width:800px;padding:30px}.quiz-header{margin-bottom:30px}.quiz-progress{background:#f8fafc;border:2px solid #e5e7eb;border-radius:15px;padding:20px}.progress-info{color:#374151;display:flex;font-weight:600;justify-content:space-between;margin-bottom:12px}.question-number{color:#8b5cf6;font-size:1.1rem}.score-tracker{color:#10b981;font-size:1.1rem}.progress-bar{background:#e5e7eb;border-radius:10px;height:10px;overflow:hidden}.progress-fill{background:linear-gradient(90deg,#8b5cf6,#10b981);border-radius:10px;height:100%;transition:width .5s ease}.question-card{background:linear-gradient(135deg,#f8fafc,#eef2ff);border:2px solid #ddd6fe;border-radius:15px;padding:30px}.question-text{color:#1f2937;font-size:1.4rem;font-weight:700;line-height:1.6;margin-bottom:30px}.options-grid{grid-gap:15px;display:grid;gap:15px;margin-bottom:20px}.option-button{align-items:center;background:#fff;border:3px solid #e5e7eb;border-radius:12px;cursor:pointer;display:flex;font-size:1rem;font-weight:500;gap:15px;padding:20px;position:relative;text-align:left;transition:all .3s ease}.option-button:hover:not(.disabled){border-color:#8b5cf6;box-shadow:0 5px 15px #8b5cf633;transform:translateX(5px)}.option-button.selected{background:linear-gradient(135deg,#f5f3ff,#ede9fe);border-color:#8b5cf6}.option-button.correct{animation:correctPulse .5s ease;background:linear-gradient(135deg,#ecfdf5,#d1fae5);border-color:#10b981}.option-button.incorrect{animation:shake .5s ease;background:linear-gradient(135deg,#fee2e2,#fecaca);border-color:#ef4444}.option-button.disabled{cursor:not-allowed;opacity:.5}.option-letter{align-items:center;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:1.1rem;font-weight:700;height:40px;justify-content:center;width:40px}.option-button.correct .option-letter{background:linear-gradient(135deg,#10b981,#059669)}.option-button.incorrect .option-letter{background:linear-gradient(135deg,#ef4444,#dc2626)}.option-text{color:#374151;flex:1 1}.check-icon,.cross-icon{flex-shrink:0;font-size:1.5rem;font-weight:700}.check-icon{color:#10b981}.cross-icon{color:#ef4444}.explanation-box{animation:slideDown .3s ease;background:linear-gradient(135deg,#fffbeb,#fef3c7);border:2px solid #fcd34d;border-radius:12px;margin-top:20px;padding:20px}.explanation-header{align-items:center;color:#92400e;display:flex;gap:10px;margin-bottom:10px}.explanation-header .icon{font-size:1.5rem}.explanation-box p{color:#78350f;line-height:1.6;margin:0}.quiz-actions{margin-top:20px;text-align:center}.btn-next{background:linear-gradient(135deg,#10b981,#059669);border:none;border-radius:12px;box-shadow:0 5px 20px #10b9814d;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;padding:15px 40px;transition:all .3s ease}.btn-next:hover{box-shadow:0 8px 25px #10b98166;transform:translateY(-2px)}.quiz-result{padding:40px 20px;text-align:center}.result-icon{animation:bounceIn .5s ease;font-size:5rem;margin-bottom:20px}.quiz-result h2{color:#1f2937;font-size:2.5rem;margin-bottom:30px}.score-display{margin-bottom:20px}.score-circle,.score-display{display:flex;justify-content:center}.score-circle{align-items:center;animation:scaleIn .5s ease;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:50%;box-shadow:0 10px 30px #8b5cf64d;height:150px;width:150px}.score-text{color:#fff;font-size:3rem;font-weight:700}.score-details{color:#374151;font-size:1.3rem;margin-bottom:15px}.score-details strong{color:#8b5cf6}.result-message{color:#6b7280;font-size:1.2rem;margin-bottom:30px}.result-actions{display:flex;flex-wrap:wrap;gap:15px;justify-content:center}.btn-continue,.btn-retry{border:none;border-radius:12px;cursor:pointer;font-size:1.1rem;font-weight:600;padding:15px 30px;transition:all .3s ease}.btn-retry{background:linear-gradient(135deg,#8b5cf6,#7c3aed);box-shadow:0 5px 20px #8b5cf64d;color:#fff}.btn-retry:hover{box-shadow:0 8px 25px #8b5cf666;transform:translateY(-2px)}.btn-continue{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 5px 20px #10b9814d;color:#fff}.btn-continue:hover{box-shadow:0 8px 25px #10b98166;transform:translateY(-2px)}@keyframes correctPulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}@keyframes shake{0%,to{transform:translateX(0)}25%{transform:translateX(-10px)}75%{transform:translateX(10px)}}@keyframes bounceIn{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}@keyframes scaleIn{0%{transform:scale(0)}to{transform:scale(1)}}@media (max-width:768px){.quiz-container{padding:20px}.question-text{font-size:1.2rem}.option-button{padding:15px}.option-letter{font-size:1rem;height:35px;width:35px}.score-circle{height:120px;width:120px}.score-text{font-size:2.5rem}.result-actions{flex-direction:column}.btn-continue,.btn-retry{width:100%}}.story-viewer-container{animation:fadeIn .5s ease;margin:0 auto;max-width:1600px;padding:0 20px;position:relative}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.milestone-overlay{align-items:center;animation:fadeIn .3s ease;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000b3;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:2000}.milestone-card{animation:celebration-pop .5s ease-out;background:linear-gradient(135deg,#8b5cf6,#7c3aed,#10b981);border-radius:24px;box-shadow:0 20px 60px #0006;overflow:hidden;padding:60px 80px;position:relative;text-align:center}.milestone-card:before{animation:rotate-gradient 3s linear infinite;background:radial-gradient(circle,#fff3 0,#0000 70%);content:"";height:200%;left:-50%;position:absolute;top:-50%;width:200%}.milestone-icon-large{animation:bounce-celebration 1s ease-in-out infinite;font-size:5rem;margin-bottom:20px;position:relative;z-index:1}.milestone-card h2{color:#fff;font-size:2.5rem;font-weight:800;margin:0 0 12px;position:relative;text-shadow:0 4px 8px #0000004d;z-index:1}.milestone-card p{color:#fffffff2;font-size:1.2rem;margin:0;position:relative;z-index:1}@keyframes celebration-pop{0%{opacity:0;transform:scale(.5)}50%{transform:scale(1.1)}to{opacity:1;transform:scale(1)}}@keyframes bounce-celebration{0%,to{transform:translateY(0) scale(1)}50%{transform:translateY(-15px) scale(1.1)}}@keyframes rotate-gradient{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.split-view-container{grid-gap:30px;align-items:start;display:grid;gap:30px;grid-template-columns:1fr 1fr;margin-bottom:40px}.story-content-panel,.visualizer-panel{max-height:900px;min-height:600px;overflow-y:auto}.story-content-panel::-webkit-scrollbar,.visualizer-panel::-webkit-scrollbar{width:10px}.story-content-panel::-webkit-scrollbar-track,.visualizer-panel::-webkit-scrollbar-track{background:#f3f4f6;border-radius:5px}.story-content-panel::-webkit-scrollbar-thumb,.visualizer-panel::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:5px}.story-content-panel::-webkit-scrollbar-thumb:hover,.visualizer-panel::-webkit-scrollbar-thumb:hover{background:#9ca3af}.story-header{background:linear-gradient(135deg,#8b5cf626,#10b98126 50%,#3b82f626);border:2px solid #8b5cf64d;border-radius:25px;box-shadow:0 20px 60px #0000001a;overflow:hidden;padding:35px;position:relative}.story-header:before{animation:shimmer 3s infinite;background:radial-gradient(circle,#ffffff1a 0,#0000 70%);content:"";height:200%;left:-50%;position:absolute;top:-50%;width:200%}@keyframes shimmer{0%,to{transform:translate(0)}50%{transform:translate(30px,30px)}}.story-header{align-items:flex-start;background:linear-gradient(135deg,#8b5cf61a,#10b9811a);border:1px solid #8b5cf633;border-radius:20px;display:flex;justify-content:space-between;margin-bottom:40px;padding:30px}.topic-badge-wrapper{align-items:center;display:flex;gap:12px;margin-bottom:15px}.topic-icon{animation:float 3s ease-in-out infinite;font-size:2rem}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.topic-info h1{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#8b5cf6,#10b981);-webkit-background-clip:text;background-clip:text;color:#1f2937;font-size:2.5rem;font-weight:800;margin:0 0 12px}.topic-badge{animation:pulse 2s infinite;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:25px;box-shadow:0 5px 15px #8b5cf666;color:#fff;display:inline-block;font-size:1rem;font-weight:700;padding:10px 20px}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.level-indicator{align-items:center;display:flex;gap:10px;margin:0}.level-badge,.theme-badge-small{border-radius:15px;font-size:.9rem;font-weight:600;padding:6px 15px}.level-badge{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.theme-badge-small{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff}.action-buttons{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}.font-selector{background:#fff;border:2px solid #8b5cf6;border-radius:15px;box-shadow:0 4px 12px #0000001a;color:#374151;cursor:pointer;font-size:.95rem;font-weight:600;outline:none;padding:12px 16px;transition:all .3s ease}.font-selector:hover{background:linear-gradient(135deg,#8b5cf61a,#7c3aed1a);box-shadow:0 8px 25px #8b5cf633;transform:translateY(-3px)}.font-selector:focus{border-color:#7c3aed;box-shadow:0 0 0 3px #8b5cf633}.btn-icon{align-items:center;background:#fff;border:2px solid #0000;border-radius:15px;box-shadow:0 4px 12px #0000001a;color:#374151;cursor:pointer;display:flex;font-weight:600;gap:8px;overflow:hidden;padding:12px 20px;position:relative;transition:all .3s ease}.btn-icon:before{background:#8b5cf61a;border-radius:50%;content:"";height:0;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);transition:width .4s,height .4s;width:0}.btn-icon:hover:before{height:300px;width:300px}.btn-icon:hover{border-color:#8b5cf6;box-shadow:0 8px 25px #00000026;transform:translateY(-3px)}.btn-icon .icon{font-size:1.3rem}.btn-icon .btn-text,.btn-icon .icon{position:relative;z-index:1}.btn-icon.active{animation:activeGlow 2s infinite;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-color:#8b5cf6;color:#fff}@keyframes activeGlow{0%,to{box-shadow:0 4px 12px #8b5cf64d}50%{box-shadow:0 8px 25px #8b5cf699}}.btn-icon.recording{animation:recordingPulse 1s infinite;background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}.btn-icon.narrating{animation:narratingGlow 1.5s infinite;background:linear-gradient(135deg,#10b981,#059669);border-color:#10b981;color:#fff}@keyframes narratingGlow{0%,to{box-shadow:0 4px 12px #10b98166;transform:translateY(-3px)}50%{box-shadow:0 8px 25px #10b981b3;transform:translateY(-5px)}}@keyframes recordingPulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.btn-quiz{background:linear-gradient(135deg,#f59e0b,#d97706);border-color:#f59e0b;color:#fff}.btn-regenerate{background:linear-gradient(135deg,#10b981,#059669);border-color:#10b981;color:#fff}.transcription-box{align-items:center;animation:slideDown .3s ease;background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:2px solid #8b5cf6;border-radius:15px;box-shadow:0 5px 20px #8b5cf633;display:flex;gap:15px;margin-bottom:30px;padding:20px}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.transcription-box .icon{animation:float 3s ease-in-out infinite;font-size:2rem}.transcription-content{flex:1 1}.transcription-content strong{color:#8b5cf6;font-size:1.1rem}.transcription-content p{color:#374151;font-size:1rem;margin:5px 0 0}.btn-close-transcription{align-items:center;background:#ef44441a;border:2px solid #ef4444;border-radius:50%;color:#ef4444;cursor:pointer;display:flex;font-size:1.2rem;height:35px;justify-content:center;transition:all .3s ease;width:35px}.btn-close-transcription:hover{background:#ef4444;color:#fff;transform:rotate(90deg)}.btn-regenerate:disabled{cursor:not-allowed;opacity:.6;transform:none}.story-content-panel{display:flex;flex-direction:column}.story-content-section{margin-bottom:40px}.loading-state{background:linear-gradient(135deg,#8b5cf60d,#10b9810d);border:2px dashed #8b5cf6;border-radius:25px;padding:80px 40px;text-align:center}.spinner-advanced{height:80px;margin:0 auto 30px;position:relative;width:80px}.spinner-advanced:after,.spinner-advanced:before,.spinner-inner{border:4px solid #0000;border-radius:50%;bottom:0;content:"";left:0;position:absolute;right:0;top:0}.spinner-advanced:before{animation:spin 1s linear infinite;border-top-color:#8b5cf6}.spinner-advanced:after{animation:spin 1.5s linear infinite;border-right-color:#10b981}.spinner-inner{animation:spin 2s linear infinite;border-bottom-color:#3b82f6}.loading-state h3{color:#374151;font-size:1.5rem;margin-bottom:10px}.loading-state p{color:#6b7280;margin:0 0 20px}.loading-dots{display:flex;gap:8px;justify-content:center}.loading-dots span{animation:bounce 1.4s ease-in-out infinite both;background:#8b5cf6;border-radius:50%;height:12px;width:12px}.loading-dots span:first-child{animation-delay:-.32s}.loading-dots span:nth-child(2){animation-delay:-.16s;background:#10b981}.loading-dots span:nth-child(3){background:#3b82f6}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.story-card-advanced{background:#fff;border:2px solid #e5e7eb;border-radius:25px;box-shadow:0 20px 60px #00000026;overflow:hidden;padding:0;position:relative}.story-card-advanced:before{animation:gradientMove 3s ease infinite;background:linear-gradient(90deg,#8b5cf6,#10b981,#3b82f6,#f59e0b);background-size:200% 100%;content:"";height:5px;left:0;position:absolute;right:0;top:0}@keyframes gradientMove{0%,to{background-position:0 50%}50%{background-position:100% 50%}}.story-header-card{background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#fff;overflow:hidden;padding:40px;position:relative;text-align:center}.floating-particles{bottom:0;left:0;pointer-events:none;position:absolute;right:0;top:0}.floating-particles span{animation:floatParticle 6s ease-in-out infinite;font-size:2rem;opacity:.3;position:absolute}.floating-particles span:first-child{animation-delay:0s;left:10%}.floating-particles span:nth-child(2){animation-delay:2s;left:50%}.floating-particles span:nth-child(3){animation-delay:4s;left:80%}@keyframes floatParticle{0%,to{opacity:.3;transform:translateY(0) rotate(0deg)}50%{opacity:.6;transform:translateY(-30px) rotate(180deg)}}.story-header-card h2{font-size:2rem;margin:0 0 20px;position:relative;z-index:1}.story-meta{display:flex;gap:12px;justify-content:center;position:relative;z-index:1}.level-tag,.theme-tag{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff40;border:1px solid #ffffff4d;border-radius:20px;font-size:.9rem;font-weight:600;padding:8px 16px}.story-text-content{background:linear-gradient(180deg,#f8fafc,#fff);color:#374151;font-size:1.15rem;line-height:1.9;max-height:750px;overflow-y:auto;padding:45px}.story-text-content::-webkit-scrollbar{width:8px}.story-text-content::-webkit-scrollbar-track{background:#f3f4f6;border-radius:4px}.story-text-content::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:4px}.story-text-content::-webkit-scrollbar-thumb:hover{background:#9ca3af}.story-paragraph{margin-bottom:25px;padding-left:20px;position:relative;text-align:justify}.story-paragraph:before{content:"📖";left:0;opacity:.3;position:absolute;top:0}.story-paragraph:last-child{margin-bottom:0}.highlighted-word{animation:wordHighlight .3s ease-in-out;background-color:gold!important;border-radius:5px!important;box-shadow:0 2px 8px #ffd70080;color:#1f2937;font-weight:800!important;padding:3px 6px!important}@keyframes wordHighlight{0%{background-color:initial;transform:scale(1)}50%{transform:scale(1.1)}to{background-color:gold;transform:scale(1)}}.info-note{align-items:center;animation:slideUp .5s ease;background:linear-gradient(135deg,#fffbeb,#fef3c7);border:2px solid #fcd34d;border-radius:15px;color:#92400e;display:flex;gap:12px;margin:20px 45px;padding:18px 25px}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.audio-section-advanced{background:linear-gradient(135deg,#fff,#f8fafc);border:2px solid #e5e7eb;border-radius:25px;box-shadow:0 15px 50px #0000001a;padding:40px}.audio-header{border-bottom:2px solid #e5e7eb;justify-content:space-between;margin-bottom:30px;padding-bottom:20px}.audio-header,.audio-header h3{align-items:center;display:flex}.audio-header h3{color:#1f2937;font-size:1.5rem;gap:10px;margin:0}.volume-control{align-items:center;background:#fff;border:2px solid #e5e7eb;border-radius:20px;display:flex;gap:12px;padding:10px 20px}.volume-icon{font-size:1.3rem}.volume-slider{-webkit-appearance:none;appearance:none;background:#e5e7eb;border-radius:10px;height:6px;outline:none;width:120px}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:50%;box-shadow:0 3px 10px #8b5cf666;cursor:pointer;height:18px;-webkit-transition:all .3s ease;transition:all .3s ease;width:18px}.volume-slider::-webkit-slider-thumb:hover{box-shadow:0 5px 15px #8b5cf699;transform:scale(1.2)}.volume-slider::-moz-range-thumb{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border:none;border-radius:50%;cursor:pointer;height:18px;width:18px}.volume-value{color:#8b5cf6;font-weight:700;min-width:45px}.sound-grid-advanced{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-bottom:25px}.sound-btn-advanced{align-items:center;background:#fff;border:3px solid #e5e7eb;border-radius:20px;cursor:pointer;display:flex;flex-direction:column;gap:12px;overflow:hidden;padding:25px 20px;position:relative;transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.sound-btn-advanced:before{background:#8b5cf6;background:var(--theme-color,#8b5cf6);border-radius:50%;content:"";height:0;left:50%;opacity:.1;position:absolute;top:50%;transform:translate(-50%,-50%);transition:width .4s,height .4s;width:0}.sound-btn-advanced:hover:before{height:200%;width:200%}.sound-btn-advanced:hover{box-shadow:0 15px 35px #00000026;transform:translateY(-5px) scale(1.05)}.sound-btn-advanced.active,.sound-btn-advanced:hover{border-color:#8b5cf6;border-color:var(--theme-color,#8b5cf6)}.sound-btn-advanced.active{animation:activeSound 2s infinite;background:linear-gradient(135deg,#8b5cf6,#7c3aed);background:linear-gradient(135deg,var(--theme-color,#8b5cf6),var(--theme-color,#7c3aed));box-shadow:0 10px 30px #0003;color:#fff}@keyframes activeSound{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.sound-icon-wrapper{align-items:center;display:flex;height:60px;justify-content:center;position:relative;width:60px}.sound-icon{font-size:2.5rem;position:relative;transition:all .3s ease;z-index:1}.sound-btn-advanced:hover .sound-icon{transform:scale(1.2) rotate(10deg)}.audio-wave{align-items:center;display:flex;gap:3px;justify-content:center;position:absolute}.audio-wave span{animation:wave 1s ease-in-out infinite;background:#fff;border-radius:2px;height:20px;width:4px}.audio-wave span:first-child{animation-delay:0s}.audio-wave span:nth-child(2){animation-delay:.2s}.audio-wave span:nth-child(3){animation-delay:.4s}@keyframes wave{0%,to{height:10px}50%{height:25px}}.sound-label{font-size:1rem;font-weight:700;position:relative;transition:all .3s ease;z-index:1}.sound-btn-advanced.active .sound-label{color:#fff}.current-sound-indicator{align-items:center;animation:fadeInScale .3s ease;background:linear-gradient(135deg,#eef2ff,#e0e7ff);border:2px solid #8b5cf6;border-radius:15px;display:flex;justify-content:space-between;padding:20px 25px}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.sound-playing-animation{align-items:center;display:flex;gap:4px}.sound-playing-animation span{animation:soundBar 1.2s ease-in-out infinite;background:#8b5cf6;border-radius:2px;width:4px}.sound-playing-animation span:first-child{animation-delay:0s;height:15px}.sound-playing-animation span:nth-child(2){animation-delay:.2s;height:20px}.sound-playing-animation span:nth-child(3){animation-delay:.4s;height:18px}.sound-playing-animation span:nth-child(4){animation-delay:.6s;height:22px}@keyframes soundBar{0%,to{transform:scaleY(.5)}50%{transform:scaleY(1)}}.sound-info{color:#4c1d95;flex:1 1;font-size:1.1rem;margin:0 20px}.sound-info strong{color:#8b5cf6;text-transform:capitalize}.btn-stop{background:linear-gradient(135deg,#ef4444,#dc2626);border:none;border-radius:10px;box-shadow:0 4px 12px #ef44444d;color:#fff;cursor:pointer;font-size:.95rem;font-weight:600;padding:10px 20px;transition:all .3s ease}.btn-stop:hover{box-shadow:0 6px 16px #ef444466;transform:translateY(-2px)}@media (max-width:1024px){.story-header-advanced{padding:40px 30px}.topic-badge-wrapper{transform:scale(.9)}.transcription-box{max-height:120px}.sound-grid-advanced{gap:15px;grid-template-columns:repeat(3,1fr)}.audio-section-advanced{padding:30px}}@media (max-width:768px){.story-viewer{padding:15px}.story-header-advanced{gap:15px;padding:30px 20px}.topic-badge-wrapper{height:70px;width:70px}.topic-badge-icon{font-size:2rem}.header-content h1{font-size:1.8rem}.header-actions{gap:10px}.btn-icon{font-size:1.1rem;height:45px;width:45px}.transcription-box{max-height:100px;padding:15px}.story-card-advanced{padding:30px 20px}.story-text-content{font-size:1rem;line-height:1.7}.sound-grid-advanced{gap:12px;grid-template-columns:repeat(2,1fr)}.sound-btn-advanced{padding:20px 15px}.sound-icon{font-size:2rem}.sound-label{font-size:.9rem}.audio-section-advanced{padding:25px 20px}.audio-header{align-items:flex-start;flex-direction:column;gap:15px}.volume-control{justify-content:space-between;width:100%}.volume-slider{flex:1 1;max-width:150px}.current-sound-indicator{flex-direction:column;gap:12px;text-align:center}.sound-info{margin:0}}@media (max-width:480px){.story-header-advanced{padding:25px 15px}.topic-badge-wrapper{height:60px;width:60px}.topic-badge-icon{font-size:1.6rem}.header-content h1{font-size:1.5rem}.header-content p{font-size:.9rem}.btn-icon{font-size:1rem;height:40px;width:40px}.transcription-box{font-size:.9rem;padding:12px}.story-card-advanced{padding:25px 15px}.story-text-content{font-size:.95rem}.sound-grid-advanced{gap:10px;grid-template-columns:1fr}.sound-btn-advanced{padding:18px}.audio-section-advanced{padding:20px 15px}.audio-header h3{font-size:1.2rem}.btn-stop{padding:12px;width:100%}}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media (max-width:1200px){.split-view-container{grid-template-columns:1fr}.story-content-panel,.visualizer-panel{min-height:auto}}.chat-float-button{align-items:center;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border:none;border-radius:50%;bottom:30px;box-shadow:0 8px 24px #8b5cf666;cursor:pointer;display:flex;height:70px;justify-content:center;overflow:hidden;padding:0;position:fixed;right:30px;transition:all .3s ease;width:70px;z-index:1000}.chat-float-button:hover{box-shadow:0 12px 32px #8b5cf699;transform:scale(1.1) translateY(-3px)}.chat-float-button.open{opacity:.8;transform:scale(.9)}.chat-logo{background:#fff;border-radius:50%;height:50px;object-fit:contain;padding:5px;width:50px}.pulse-ring{animation:pulse-ring 2s cubic-bezier(.215,.61,.355,1) infinite;border:3px solid #8b5cf6;border-radius:50%;height:100%;position:absolute;width:100%}@keyframes pulse-ring{0%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.8)}}.chat-container{background:#fff;border-radius:20px;bottom:30px;box-shadow:0 20px 60px #0000004d;display:flex;flex-direction:column;height:600px;opacity:0;overflow:hidden;pointer-events:none;position:fixed;right:30px;transform:scale(0) translateY(100px);transition:all .4s cubic-bezier(.68,-.55,.265,1.55);width:400px;z-index:999}.chat-container.open{opacity:1;pointer-events:all;transform:scale(1) translateY(0)}.chat-header{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:20px 20px 0 0;color:#fff;justify-content:space-between;padding:20px}.chat-header,.chat-header-left{align-items:center;display:flex}.chat-header-left{gap:12px}.chat-header-logo{background:#fff;border-radius:50%;height:45px;object-fit:contain;padding:5px;width:45px}.chat-header-info h3{font-size:1.1rem;font-weight:700;margin:0}.chat-header-info p{font-size:.75rem;margin:4px 0 0;opacity:.9}.api-indicator{align-items:center;display:flex;gap:6px}.status-dot{animation:pulse-dot 2s ease-in-out infinite;background:#10b981;border-radius:50%;height:8px;width:8px}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.5}}.chat-close-btn{align-items:center;background:#fff3;border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-size:1.2rem;height:32px;justify-content:center;transition:all .2s ease;width:32px}.chat-close-btn:hover{background:#ffffff4d;transform:rotate(90deg)}.chat-messages{background:#f9fafb;display:flex;flex:1 1;flex-direction:column;gap:12px;overflow-y:auto;padding:20px}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:#f3f4f6}.chat-messages::-webkit-scrollbar-thumb{background:#8b5cf6;border-radius:3px}.message{animation:slideIn .3s ease;display:flex;flex-direction:column;max-width:80%}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end}.message.bot{align-self:flex-start}.message-content{word-wrap:break-word;border-radius:16px;font-size:.95rem;line-height:1.5;padding:12px 16px;white-space:pre-wrap}.message.user .message-content{background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-bottom-right-radius:4px;color:#fff}.message.bot .message-content{background:#fff;border:1px solid #e5e7eb;border-bottom-left-radius:4px;box-shadow:0 2px 8px #0000000d;color:#1f2937}.message.error .message-content{background:#fee2e2;border-color:#fca5a5;color:#991b1b}.message-meta{font-size:.7rem;margin-top:6px;opacity:.7}.api-badge{background:#f3f4f6;border-radius:8px;color:#6b7280;display:inline-block;font-size:.7rem;padding:3px 8px}.message.typing{align-self:flex-start;max-width:100px}.typing-indicator{background:#fff;border:1px solid #e5e7eb;border-radius:16px;border-bottom-left-radius:4px;display:flex;gap:4px;padding:12px 16px}.typing-indicator span{animation:typing-bounce 1.4s ease-in-out infinite;background:#8b5cf6;border-radius:50%;height:8px;width:8px}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing-bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-10px)}}.api-status{color:#6b7280;font-size:.8rem;font-style:italic;margin-top:8px}.chat-input-container{align-items:flex-end;background:#fff;border-top:1px solid #e5e7eb;display:flex;gap:10px;padding:16px}.chat-input{border:2px solid #e5e7eb;border-radius:12px;flex:1 1;font-family:inherit;font-size:.95rem;max-height:100px;overflow-y:auto;padding:12px 16px;resize:none;transition:all .2s ease}.chat-input:focus{border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf61a;outline:none}.chat-input:disabled{background:#f3f4f6;cursor:not-allowed}.chat-send-btn{align-items:center;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border:none;border-radius:12px;color:#fff;cursor:pointer;display:flex;flex-shrink:0;font-size:1.2rem;height:44px;justify-content:center;transition:all .2s ease;width:44px}.chat-send-btn:hover:not(:disabled){box-shadow:0 4px 12px #8b5cf666;transform:scale(1.05)}.chat-send-btn:disabled{cursor:not-allowed;opacity:.5}.chat-footer{background:#f9fafb;border-radius:0 0 20px 20px;border-top:1px solid #e5e7eb;padding:12px 16px;text-align:center}.chat-footer small{color:#6b7280;font-size:.75rem}@media (max-width:768px){.chat-container{border-radius:0;bottom:0;height:100%;right:0;width:100%}.chat-container.open{border-radius:0}.chat-float-button{bottom:20px;height:60px;right:20px;width:60px}.chat-logo{height:40px;width:40px}}
/*# sourceMappingURL=main.ee406028.css.map*/