:root{--background-dark: #111827;--background-light: #1F2937;--text-primary: #F9FAFB;--text-secondary: #9CA3AF;--accent: #38BDF8;--border-color: #374151;--shadow-color: rgba(0, 0, 0, .2);--hero-gradient-start: #38BDF8;--hero-gradient-end: #A78BFA;--error-color: #F87171;--success-color: #34D399}[data-theme=light]{--background-dark: #F9FAFB;--background-light: #FFFFFF;--text-primary: #111827;--text-secondary: #6B7280;--accent: #2563EB;--border-color: #E5E7EB;--shadow-color: rgba(0, 0, 0, .1);--hero-gradient-start: #2563EB;--hero-gradient-end: #7C3AED;--error-color: #EF4444;--success-color: #10B981}[data-theme=matrix]{--background-dark: #020c02;--background-light: #0a1f0a;--text-primary: #00FF41;--text-secondary: #008F11;--accent: #00FF41;--border-color: #004F08;--shadow-color: rgba(0, 255, 65, .1);--hero-gradient-start: #00FF41;--hero-gradient-end: #00CF34;--error-color: #FF4141;--success-color: #34D399;font-family:Fira Code,monospace}[data-theme=synthwave]{--background-dark: #1A103C;--background-light: #2A2159;--text-primary: #F4F4F4;--text-secondary: #9E91D9;--accent: #FF6AC1;--border-color: #4A3F83;--shadow-color: rgba(0, 0, 0, .4);--hero-gradient-start: #FF6AC1;--hero-gradient-end: #00F6FF;--error-color: #FF4141;--success-color: #39FF14;font-family:Fira Code,monospace}*{box-sizing:border-box;margin:0;padding:0}html{background-color:var(--background-dark);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}html,body{height:100%}body{font-family:Inter,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body.modal-open{overflow:hidden}#app{display:flex;flex-direction:column;min-height:100vh}.container{width:100%;max-width:1440px;margin:0 auto;padding:0 1.5rem}.main-content{flex-grow:1}.section-heading{font-size:2.25rem;font-weight:700;text-align:center;margin-bottom:3rem;color:var(--text-primary)}pre{background-color:var(--background-dark);border:1px solid var(--border-color);padding:1rem;border-radius:.5rem;overflow-x:auto;font-family:Fira Code,Courier New,monospace;font-size:.9rem;color:var(--text-primary)}code{font-family:inherit}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.panel-toggle{position:absolute;top:1rem;z-index:50;background-color:var(--background-dark);border:1px solid var(--border-color);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease-in-out;color:var(--text-secondary);box-shadow:0 2px 5px var(--shadow-color)}.panel-toggle svg{width:20px;height:20px;transition:transform .3s ease-in-out}.panel-toggle:hover{background-color:var(--background-light);border-color:var(--accent);color:var(--accent)}.spinner-large{width:50px;height:50px;border:5px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.floating-nav{position:sticky;bottom:0;z-index:40;margin-top:auto;padding:0;background:none;-webkit-backdrop-filter:none;backdrop-filter:none;border:none;height:0}.go-to-top-button{position:fixed;bottom:2rem;right:calc(3rem + 44px);width:48px;height:48px;border-radius:50%;background-color:var(--accent);color:var(--background-dark);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:100;box-shadow:0 4px 12px var(--shadow-color);animation:fadeInScale .3s ease-out;opacity:1;visibility:visible;transform:translateY(0);transition:opacity .3s ease,visibility .3s ease,transform .3s ease}.go-to-top-button:hover{transform:scale(1.1)}.go-to-top-button svg{width:24px;height:24px;stroke:var(--background-dark)}.floating-arrow-nav{position:relative;width:100%;max-width:900px;margin:0 auto}.floating-arrow-nav .arrow-button{background-color:var(--background-dark);border:1px solid var(--border-color);width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);position:fixed;z-index:45;box-shadow:0 4px 12px var(--shadow-color);opacity:1;visibility:visible;transform:translateY(0);transition:all .2s,opacity .3s ease,visibility .3s ease,transform .3s ease}.floating-arrow-nav .arrow-button:first-child{left:2rem;bottom:2rem}.floating-arrow-nav .arrow-button:last-child{right:2rem;bottom:2rem}.floating-arrow-nav .arrow-button:hover:not(:disabled){border-color:var(--accent);color:var(--accent);transform:scale(1.1)}.floating-arrow-nav .arrow-button:disabled{opacity:.4;cursor:not-allowed;transform:none;border-color:var(--border-color);color:var(--text-secondary)}.floating-arrow-nav .arrow-button svg{width:24px;height:24px}html{font-size:75%}@media (max-width: 1024px){html{font-size:62.5%}}@media (max-width: 768px){html{font-size:56.25%}}body.footer-is-visible .go-to-top-button,body.footer-is-visible .floating-arrow-nav .arrow-button{opacity:0;visibility:hidden;transform:translateY(calc(100% + 2rem));pointer-events:none}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes backgroundPan{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}@keyframes pulse-glow{0%{box-shadow:0 0 color-mix(in srgb,var(--accent) 40%,transparent)}70%{box-shadow:0 0 0 10px transparent}to{box-shadow:0 0 0 0 transparent}}.main-content>*:first-child{margin-top:0;padding-top:1rem}.topics-section{padding:5rem 0;background-color:var(--background-light);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.topics-header{display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:1.5rem;margin-bottom:3rem}@media (min-width: 768px){.topics-header{flex-direction:row}}.topics-header .section-heading{margin-bottom:0;text-align:left}.search-container{width:100%;max-width:400px}.search-bar{width:100%;padding:.75rem 1.25rem;font-size:1rem;border-radius:9999px;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);outline:none;transition:border-color .2s,box-shadow .2s,background-color .3s ease;animation:pulse-glow 3.5s infinite 1s}.search-bar:focus{animation:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.no-results{color:var(--text-secondary);grid-column:1 / -1;text-align:center;padding:2rem}.cheatsheet-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;position:relative;z-index:1}@media (prefers-reduced-motion: no-preference){.cheatsheet-grid .topic-card{animation:fadeInUp .5s ease-out both}.cheatsheet-grid .topic-card:nth-child(1){animation-delay:.05s}.cheatsheet-grid .topic-card:nth-child(2){animation-delay:.1s}.cheatsheet-grid .topic-card:nth-child(3){animation-delay:.15s}.cheatsheet-grid .topic-card:nth-child(4){animation-delay:.2s}.cheatsheet-grid .topic-card:nth-child(5){animation-delay:.25s}.cheatsheet-grid .topic-card:nth-child(6){animation-delay:.3s}.cheatsheet-grid .topic-card:nth-child(7){animation-delay:.35s}.cheatsheet-grid .topic-card:nth-child(8){animation-delay:.4s}}.custom-cheatsheet-section{padding:5rem 0;background-color:var(--background-dark);border-bottom:1px solid var(--border-color)}.cheatsheet-grid-container{scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.cheatsheet-grid-container::-webkit-scrollbar{width:8px}.cheatsheet-grid-container::-webkit-scrollbar-track{background:transparent;margin-block:.5rem}.cheatsheet-grid-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}@media (min-width: 769px){.cheatsheet-grid-container{max-height:33.5rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem}}@media (max-width: 768px){.cheatsheet-grid-container{max-height:32rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem}.cheatsheet-grid-container .cheatsheet-grid{grid-template-columns:1fr;gap:1rem;padding:1rem}}.header{padding:1rem 0;border-bottom:1px solid var(--border-color);background-color:var(--background-dark);transition:background-color .3s ease,border-color .3s ease;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background-color:color-mix(in srgb,var(--background-dark) 80%,transparent)}.header .container{display:flex;justify-content:space-between;align-items:center;gap:1rem;position:relative}.logo{font-size:1.5rem;font-weight:700;color:var(--text-primary);text-decoration:none;cursor:pointer;flex-shrink:0}.header-actions{display:flex;align-items:center;gap:.75rem;flex-shrink:0}.header-button{background-color:transparent;border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.header-button.primary{background-color:var(--accent);border-color:var(--accent);color:var(--background-dark)!important}.header-button:hover{opacity:.85;transform:translateY(-2px)}.user-menu,.get-started-menu{position:relative}.user-menu-button{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:.5rem}.user-menu-button:hover{border-color:var(--accent);transform:translateY(-2px)}.user-menu-button span{max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-arrow{font-size:.7em;margin-left:.25rem;transition:transform .2s}.user-menu-dropdown,.get-started-dropdown{position:absolute;top:calc(100% + 10px);right:0;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.5rem;width:200px;box-shadow:0 5px 15px var(--shadow-color);z-index:110;overflow:hidden;animation:scaleInModal .2s ease-out;padding:.25rem}.dropdown-item{display:block;width:100%;padding:.75rem 1rem;text-align:left;background:none;border:none;border-radius:.25rem;color:var(--text-secondary);cursor:pointer;font-size:.95rem;transition:all .2s}.dropdown-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.dropdown-item.logout{color:var(--error-color)}.dropdown-item.logout:hover{background-color:color-mix(in srgb,var(--error-color) 10%,transparent)}.header-actions.desktop{display:flex}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;z-index:120}.hamburger-icon{display:block;width:24px;height:2px;background-color:var(--text-primary);position:relative;transition:background-color .2s ease-in-out}.hamburger-icon:before,.hamburger-icon:after{content:"";position:absolute;width:24px;height:2px;background-color:var(--text-primary);left:0;transition:transform .3s ease,top .3s ease}.hamburger-icon:before{top:-8px}.hamburger-icon:after{top:8px}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon{background-color:transparent}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon:before{transform:rotate(45deg);top:0}.mobile-menu-toggle[aria-expanded=true] .hamburger-icon:after{transform:rotate(-45deg);top:0}.mobile-menu{position:absolute;top:calc(100% + 10px);right:0;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;box-shadow:0 8px 25px var(--shadow-color);z-index:110;animation:scaleInModal .2s ease-out;transform-origin:top right;margin-right:.5rem;display:flex;flex-direction:column;gap:.25rem;height:auto;left:auto;-webkit-backdrop-filter:none;backdrop-filter:none;overflow-y:visible}.mobile-menu-item{background:none;border:none;border-radius:.5rem;color:var(--text-secondary);font-size:1rem;font-weight:500;cursor:pointer;padding:.75rem 1rem;transition:all .2s;text-align:left;width:100%}.mobile-menu-item:first-child{border-top:none}.mobile-menu-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.mobile-menu-item.logout{color:var(--error-color);margin-top:.5rem;border-top:1px solid var(--border-color);border-radius:0 0 .5rem .5rem}.mobile-menu-item.logout:hover{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent)}@media (max-width: 768px){.header{height:60px;padding:0}.header .container{height:100%;padding:0 1rem}.header-actions.desktop{display:none}.mobile-menu-toggle{display:block}.logo{font-size:1.6rem}}.hero{padding:5rem 0;background-color:var(--background-light);border-bottom:1px solid var(--border-color);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr;align-items:center;gap:3rem}.hero-content{text-align:center}.hero-title{font-size:2.75rem;font-weight:800;line-height:1.2;color:var(--text-primary);margin-bottom:1.5rem;animation:fadeInUp .6s ease-out .2s both}.hero-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:550px;margin:0 auto 2rem;animation:fadeInUp .6s ease-out .4s both}.hero-cta-button{color:var(--background-dark)!important;padding:.9rem 2.25rem;border:none;border-radius:.5rem;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s;display:inline-block;text-decoration:none;background:linear-gradient(-45deg,var(--hero-gradient-start),var(--hero-gradient-end),var(--accent));background-size:400% 400%;animation:fadeInUp .6s ease-out .6s both,backgroundPan 10s ease infinite}.hero-cta-button:hover{transform:translateY(-3px);box-shadow:0 8px 20px var(--shadow-color);opacity:.9}.hero-graphic{perspective:1000px;display:none;animation:scaleIn .8s ease-out .8s both}.graphic-window{background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;box-shadow:0 20px 40px var(--shadow-color);transform:rotateY(-15deg) rotateX(5deg);transition:transform .3s ease}.hero-grid:hover .graphic-window{transform:rotateY(0) rotateX(0)}.graphic-header{padding:.75rem;border-bottom:1px solid var(--border-color);display:flex;gap:.5rem}.graphic-header .dot{width:12px;height:12px;border-radius:50%}.graphic-header .red{background-color:#ff5f56}.graphic-header .yellow{background-color:#ffbd2e}.graphic-header .green{background-color:#27c93f}.graphic-body{padding:1.5rem;font-family:Fira Code,monospace;font-size:.9rem;overflow:hidden;white-space:pre}.graphic-body .code-keyword{color:#f92672}.graphic-body .code-function{color:#a6e22e}.graphic-body .code-variable{color:#66d9ef}.graphic-body .code-boolean{color:#ae81ff}.graphic-body .code-string{color:#e6db74}@media (min-width: 992px){.hero-grid{grid-template-columns:repeat(2,1fr);gap:4rem}.hero-content{text-align:left}.hero-subtitle{margin:0 0 2rem}.hero-graphic{display:block}}@media (min-width: 768px){.hero-title{font-size:3.5rem}}@media (max-width: 768px){.hero-title{font-size:2.5rem}}@media (max-width: 480px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}}.features-section{padding:5rem 0;animation:fadeInUp .6s ease-out both}.features-carousel-container{overflow:hidden;position:relative;width:100%;padding:1rem 0;-webkit-mask-image:linear-gradient(to right,transparent,black 10%,black 90%,transparent);mask-image:linear-gradient(to right,transparent,black 10%,black 90%,transparent)}.features-carousel-track{display:flex;width:max-content}@media (prefers-reduced-motion: no-preference){.features-carousel-track{animation:scroll-desktop 25s linear infinite}.features-carousel-container:hover .features-carousel-track{animation-play-state:paused}}@keyframes scroll-desktop{0%{transform:translate(0)}to{transform:translate(calc(-6*(300px + 2.5rem)))}}@keyframes scroll-mobile{0%{transform:translate(0)}to{transform:translate(calc(-6*(250px + 1.5rem)))}}.feature-item{flex-shrink:0;width:300px;margin-right:2.5rem;text-align:center;background-color:var(--background-light);padding:2.5rem 2rem;border-radius:.75rem;border:1px solid var(--border-color);transition:all .2s ease-in-out}.feature-item:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 10px 20px var(--shadow-color),0 0 15px color-mix(in srgb,var(--accent) 30%,transparent);z-index:10}.feature-icon{font-size:2.5rem;margin-bottom:1.5rem;line-height:1}.feature-title{font-size:1.25rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}.feature-description{font-size:.95rem;color:var(--text-secondary);line-height:1.7}@media (max-width: 768px){.feature-item{width:250px;padding:2rem 1.5rem;margin-right:1.5rem}@media (prefers-reduced-motion: no-preference){.features-carousel-track{animation-name:scroll-mobile;animation-duration:20s}}.feature-icon{font-size:2.25rem;margin-bottom:1rem}.feature-title{font-size:1.15rem}.feature-description{font-size:.9rem}}.theme-toggle{background:none;border:1px solid var(--border-color);border-radius:50%;cursor:pointer;width:40px;height:40px;display:flex;justify-content:center;align-items:center;transition:background-color .2s,border-color .2s}.theme-toggle:hover{background-color:var(--background-light);border-color:var(--accent)}.theme-icon{font-size:1.2rem}.footer{padding:2rem 0;border-top:1px solid var(--border-color);color:var(--text-secondary);background-color:var(--background-dark);transition:background-color .3s ease,border-color .3s ease}.footer-container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem}.footer-links{display:flex;gap:1.5rem;align-items:center}.footer-links a{color:var(--text-secondary);text-decoration:none;transition:color .2s;font-size:.9rem}.footer-links a:hover{color:var(--accent)}.footer-center-content{text-align:center;flex-grow:1}.copyright{font-size:.9rem}.developer-credit{font-size:.9rem;margin-top:.25rem;color:var(--text-secondary)}.visitor-info{font-size:.8rem;color:var(--text-secondary);margin-top:.25rem}.footer-actions{display:flex;align-items:center;gap:1rem}.feedback-button{background-color:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s;font-size:.9rem}.feedback-button:hover{border-color:var(--accent);color:var(--accent)}@media (max-width: 768px){.footer-container{flex-direction:column;gap:1.5rem}.footer-center-content{order:3}.footer-links{order:2}.footer-actions{order:1}}.page-container.topic-detail-container{max-width:none}.tooltip-wrapper[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:110%;left:50%;transform:translate(-50%);background-color:var(--background-dark);color:var(--text-primary);padding:.75rem 1rem;border-radius:.5rem;font-size:.8rem;font-weight:500;white-space:normal;text-align:center;max-width:220px;opacity:0;transition:opacity .2s;pointer-events:none;z-index:20;border:1px solid var(--border-color);overflow-wrap:break-word}.topic-detail-container.full-height{display:flex;flex-direction:column;height:calc(100vh - 54px);padding-top:2rem;padding-bottom:2rem}.full-height .page-header{flex-shrink:0}.full-height .topic-detail-split-view{flex-grow:1;min-height:0}.detail-content{margin:0 auto}.content-section{margin-bottom:2.5rem}.section-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:1.5rem;padding-bottom:.5rem;border-bottom:2px solid var(--accent);display:inline-block}.term-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:1rem}.term-tile-wrapper{position:relative;animation:fadeInUp .3s ease-out both}.term-grid .term-tile-wrapper:nth-child(1){animation-delay:.04s}.term-grid .term-tile-wrapper:nth-child(2){animation-delay:.08s}.term-grid .term-tile-wrapper:nth-child(3){animation-delay:.12s}.term-grid .term-tile-wrapper:nth-child(4){animation-delay:.16s}.term-grid .term-tile-wrapper:nth-child(5){animation-delay:.2s}.term-grid .term-tile-wrapper:nth-child(6){animation-delay:.24s}.term-grid .term-tile-wrapper:nth-child(7){animation-delay:.28s}.term-grid .term-tile-wrapper:nth-child(8){animation-delay:.32s}.term-grid .term-tile-wrapper:nth-child(9){animation-delay:.36s}.term-grid .term-tile-wrapper:nth-child(10){animation-delay:.4s}.term-grid .term-tile-wrapper:nth-child(11){animation-delay:.44s}.term-grid .term-tile-wrapper:nth-child(12){animation-delay:.48s}.term-tile-tooltip{display:none}.term-tile{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:1rem;border-radius:.5rem;font-size:.95rem;font-weight:500;text-align:center;cursor:pointer;transition:all .2s ease-in-out;font-family:inherit;width:100%;height:100%;min-height:70px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.term-tile-content{position:relative;z-index:1}.term-tile:hover{transform:translateY(-3px);background-color:color-mix(in srgb,var(--background-light) 85%,var(--accent));border-color:var(--accent)}.term-tile:before{content:"";position:absolute;left:0;bottom:0;width:100%;height:var(--progress-percent, 0%);background-color:color-mix(in srgb,var(--accent) 20%,transparent);transition:height .4s ease-in-out;z-index:0}.topic-detail-split-view{display:flex;gap:2rem;animation:fadeIn .5s ease-in-out;height:100%;position:relative}.terms-sidebar{flex:0 0 280px;height:100%;padding-right:1.5rem;border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:flex-basis .3s ease-in-out,min-width .3s ease-in-out,opacity .3s ease-in-out}.topic-detail-split-view.sidebar-collapsed .terms-sidebar{flex-basis:0;min-width:0;padding:0;border:none;opacity:0;overflow:hidden}.terms-sidebar nav{display:flex;flex-direction:column;height:100%;min-height:0}.sidebar-section-header{padding-bottom:.75rem;margin-bottom:.75rem;border-bottom:1px solid var(--border-color)}.sidebar-section-header h3{font-size:1rem;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.terms-sidebar-list{list-style:none;flex-grow:1;overflow-y:auto;min-height:0;scrollbar-width:thin;scrollbar-color:var(--accent) transparent;padding-right:1rem;margin-right:-1rem}.terms-sidebar-list::-webkit-scrollbar{width:6px}.terms-sidebar-list::-webkit-scrollbar-track{background:transparent}.terms-sidebar-list::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:3px}.terms-sidebar-item{width:100%;padding:.75rem 1rem;text-align:left;background:none;border:none;color:var(--text-secondary);font-size:.95rem;font-weight:500;cursor:pointer;border-radius:.5rem;transition:background-color .2s,color .2s;font-family:inherit}.terms-sidebar-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.terms-sidebar-item.active{background-color:var(--accent);color:var(--background-dark)!important;font-weight:600}.qa-view{flex-grow:1;min-width:0;height:100%;overflow-y:auto;padding-right:1rem;scrollbar-width:thin;scrollbar-color:var(--accent) var(--background-dark)}.qa-view::-webkit-scrollbar{width:8px}.qa-view::-webkit-scrollbar-track{background:var(--background-dark)}.qa-view::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}.qa-header{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:1.5rem;margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.qa-term-title{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0;flex-shrink:0}.qa-header-controls{display:flex;align-items:center;flex-wrap:wrap;gap:1rem;justify-content:flex-start;flex-grow:1}.qa-header-controls .filter-group{display:flex;align-items:center}.qa-header-controls .qa-search-bar{padding:.6rem 1rem;font-size:.95rem;border-radius:9999px;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);outline:none;transition:border-color .2s,box-shadow .2s,background-color .3s ease;width:100%;max-width:220px}.qa-search-bar:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.filter-dropdown-wrapper{position:relative}.filter-dropdown-toggle{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-secondary);padding:.6rem 1.2rem;border-radius:9999px;cursor:pointer;font-weight:500;transition:all .2s;font-size:.9rem;font-family:inherit;display:flex;align-items:center;gap:.5rem}.filter-dropdown-toggle:not(:disabled):hover{border-color:var(--accent);color:var(--text-primary)}.filter-dropdown-toggle:disabled{opacity:.5;cursor:not-allowed}.filter-dropdown-panel{position:absolute;top:calc(100% + 8px);right:0;min-width:150px;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.5rem;box-shadow:0 5px 15px var(--shadow-color);z-index:10;padding:.5rem;animation:fadeInScale .2s ease-out}.filter-dropdown-item{width:100%;display:block;padding:.6rem 1rem;background:none;border:none;color:var(--text-secondary);text-align:left;font-size:.9rem;font-family:inherit;cursor:pointer;border-radius:.25rem;transition:all .2s}.filter-dropdown-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.filter-dropdown-item.active{color:var(--accent);font-weight:600}.checkbox-label{display:flex;align-items:center;gap:.5rem;cursor:pointer;color:var(--text-primary);font-weight:500;padding:.6rem 0}.checkbox-label[data-disabled=true]{cursor:pointer;opacity:.6}.checkbox-label input[type=checkbox]{display:none}.checkbox-custom{width:18px;height:18px;border:2px solid var(--border-color);border-radius:4px;display:inline-block;transition:all .2s;background-color:var(--background-dark)}.checkbox-label:hover:not([data-disabled=true]) .checkbox-custom{border-color:var(--accent)}.checkbox-label input:checked+.checkbox-custom{background-color:var(--accent);border-color:var(--accent);background-image:url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e")}.qa-content{display:flex;flex-direction:column;gap:2rem;padding-bottom:80px}.qa-item{background-color:var(--background-light);padding:1.5rem;border-radius:.75rem;border:1px solid var(--border-color);transition:border-color .2s;animation:fadeInUp .4s ease-out both}.qa-content .qa-item:nth-child(1){animation-delay:.05s}.qa-content .qa-item:nth-child(2){animation-delay:.1s}.qa-content .qa-item:nth-child(3){animation-delay:.15s}.qa-content .qa-item:nth-child(4){animation-delay:.2s}.qa-content .qa-item:nth-child(5){animation-delay:.25s}.qa-item:focus-within{border-color:var(--accent)}.qa-item h4{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;font-size:1.2rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}.toggle-visited-question-btn{flex-shrink:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;background-color:var(--background-dark);border:1px solid var(--border-color);color:transparent;border-radius:50%;cursor:inherit;transition:all .2s;font-size:.9rem}.toggle-visited-question-btn:disabled{opacity:.7}.toggle-visited-question-btn.visited{background-color:var(--success-color);border-color:var(--success-color);color:var(--background-dark)}.qa-item>p{color:var(--text-secondary);margin-bottom:1.5rem;white-space:pre-wrap}.qa-actions{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}.qa-item .action-button,.qa-item .ai-button{background:none;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;transition:all .2s,transform .2s ease;font-size:.9rem;display:inline-flex;align-items:center;gap:.5rem;cursor:pointer}.qa-item .action-button:hover,.qa-item .ai-button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 4px 10px var(--shadow-color)}.qa-item .ai-button{border-color:var(--accent);color:var(--accent);background-color:color-mix(in srgb,var(--accent) 15%,transparent)}.qa-item .ai-button:not(:disabled):hover{background-color:var(--accent);color:var(--background-dark)}.qa-item .ai-button.primary{background-color:var(--accent);color:var(--background-dark);font-weight:600}.qa-item .action-button:disabled,.qa-item .ai-button:disabled{opacity:.5;filter:grayscale(80%);cursor:not-allowed}.qa-header-controls .quiz-button,.qa-item .quiz-button{border-color:var(--success-color);color:var(--success-color);background-color:color-mix(in srgb,var(--success-color) 15%,transparent);padding:.6rem 1rem}.qa-header-controls .quiz-button{border-radius:9999px}.tooltip-wrapper:hover .quiz-button:not(:disabled){background-color:var(--success-color);color:var(--background-dark)}.qa-header-controls .quiz-button:disabled{opacity:.5;filter:grayscale(80%)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.qa-example{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border-color);animation:slideDown .4s ease}.qa-example h5{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem}.qa-example p{color:var(--text-secondary);margin-bottom:1rem}.code-block-wrapper{position:relative}.code-block-wrapper pre{padding-top:2.5rem}.copy-code-button{position:absolute;top:.75rem;right:.75rem;background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-secondary);padding:.4rem .8rem;border-radius:.5rem;cursor:pointer;font-size:.85rem;font-weight:500;opacity:0;transition:all .2s ease-in-out}.code-block-wrapper:hover .copy-code-button{opacity:1}.copy-code-button:hover{background-color:var(--background-dark);color:var(--text-primary)}.copy-code-button.copied{opacity:1;background-color:var(--success-color);color:var(--background-dark);border-color:var(--success-color);transform:scale(1.05)}.spinner{width:20px;height:20px;border:3px solid var(--accent);border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes fadeInAI{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.ai-explanation{margin-top:1.5rem;padding:1.25rem;border-radius:.75rem;background-color:color-mix(in srgb,var(--accent) 5%,var(--background-dark));border-left:4px solid var(--accent);animation:fadeInAI .5s ease-out}.ai-explanation h5{font-size:1.1rem;font-weight:600;color:var(--accent);margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.ai-explanation p{color:var(--text-secondary);white-space:pre-wrap;line-height:1.7}.terms-sidebar-mobile-toggle,.mobile-sidebar-overlay{display:none}.topic-detail-split-view .panel-toggle{left:280px;transform:translate(-50%)}.topic-detail-split-view.sidebar-collapsed .panel-toggle{left:1rem;transform:translate(0)}.topic-detail-split-view.sidebar-collapsed .panel-toggle svg{transform:rotate(180deg)}@media (max-width: 1500px){.qa-header-main{flex-direction:column;align-items:flex-start}}@media (max-width: 1024px){.topic-detail-container.full-height{height:auto;padding-bottom:2rem}.full-height .topic-detail-split-view{flex-grow:0;min-height:initial}.topic-detail-split-view{flex-direction:column;height:auto;padding-top:1rem}.terms-sidebar,.panel-toggle{display:none}.qa-view{height:auto;overflow-y:visible;padding-right:0}.qa-header-main{flex-direction:row;align-items:center}.floating-back-button{width:40px;height:40px;top:calc(60px + 1rem);right:1rem}.floating-back-button svg{width:20px;height:20px}.terms-sidebar-mobile-toggle{position:fixed;top:calc(60px + 1rem);left:1rem;z-index:45;width:40px;height:40px;border-radius:50%;background-color:var(--background-dark);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);box-shadow:0 4px 12px var(--shadow-color);transition:all .2s ease}.terms-sidebar-mobile-toggle:hover{border-color:var(--accent);color:var(--accent)}.terms-sidebar-mobile-toggle svg{width:20px;height:20px}.mobile-sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;z-index:149;opacity:0;transition:opacity .3s ease-out;pointer-events:none}.mobile-sidebar-overlay.is-open{opacity:1;pointer-events:auto}.terms-sidebar-mobile-dropdown{position:fixed;top:0;left:0;width:300px;max-width:80vw;height:100vh;transform:translate(-100%);transition:transform .3s ease-out;z-index:150;background-color:var(--background-light);border-right:1px solid var(--border-color);box-shadow:0 5px 15px var(--shadow-color);display:flex;flex-direction:column;padding:1rem}.terms-sidebar-mobile-dropdown.is-open{transform:translate(0)}.terms-sidebar-mobile-dropdown .terms-sidebar-list{margin:0;padding:0}}@media (max-width: 768px){.qa-term-title{font-size:1.75rem}.qa-header-controls{gap:.75rem;justify-content:flex-start}}@media (max-width: 480px){.qa-term-title{font-size:1.5rem}.term-grid{grid-template-columns:1fr 1fr}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#000000b3;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;z-index:200;animation:fadeInModal .3s ease;padding:1rem}.modal-content{background-color:var(--background-light);border-radius:.75rem;border:1px solid var(--border-color);width:100%;max-width:500px;box-shadow:0 10px 30px var(--shadow-color);position:relative;animation:scaleInModal .3s ease;display:flex;flex-direction:column;max-height:90vh}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem;border-bottom:1px solid var(--border-color);flex-shrink:0}.modal-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin:0}.modal-close-button{background:none;border:none;color:var(--text-secondary);font-size:1.75rem;cursor:pointer;line-height:1;padding:.5rem;margin:-.5rem}.modal-close-button:hover{color:var(--text-primary)}.modal-body{padding:1.5rem 2rem;color:var(--text-secondary);overflow-y:auto;flex-grow:1;min-height:0}@keyframes fadeInModal{0%{opacity:0}to{opacity:1}}@keyframes scaleInModal{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.auth-modal-content{padding:0}.auth-prompt{text-align:center;color:var(--text-secondary);margin-bottom:1.5rem;font-size:1rem;line-height:1.5}.auth-form{display:flex;flex-direction:column;gap:1.25rem;margin-top:.5rem}.form-group{display:flex;flex-direction:column}.form-group label{font-size:.9rem;font-weight:500;margin-bottom:.5rem;color:var(--text-secondary)}.form-group input{padding:.75rem 1rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;font-size:1rem;transition:all .2s}.form-group input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.auth-submit-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:.5rem}.auth-submit-button:hover{opacity:.9}.auth-toggle-text{text-align:center;font-size:.9rem;color:var(--text-secondary);margin-top:1.5rem}.auth-toggle-text button{background:none;border:none;color:var(--accent);font-weight:500;cursor:pointer;text-decoration:underline;padding:0}.auth-error{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent);border:1px solid var(--error-color);padding:.75rem;border-radius:.5rem;font-size:.9rem;text-align:center;margin-bottom:1rem}.auth-success{color:var(--success-color);background-color:color-mix(in srgb,var(--success-color) 10%,transparent);border:1px solid var(--success-color);padding:.75rem;border-radius:.5rem;font-size:.9rem;text-align:center;margin-bottom:1rem}.radio-group{display:flex;gap:1.5rem;padding-top:.25rem}.radio-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-weight:500;font-size:1rem}.radio-label input[type=radio]{display:none}.radio-custom{width:20px;height:20px;border-radius:50%;border:2px solid var(--border-color);display:inline-block;position:relative;transition:all .2s}.radio-label:hover .radio-custom{border-color:var(--accent)}.radio-label input:checked+.radio-custom{border-color:var(--accent)}.radio-label input:checked+.radio-custom:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:10px;height:10px;border-radius:50%;background-color:var(--accent)}.password-input-wrapper{position:relative;display:flex;align-items:center}.password-input-wrapper input{width:100%;padding-right:3rem}.password-toggle-button{position:absolute;right:1rem;background:none;border:none;cursor:pointer;color:var(--text-secondary);padding:.25rem;display:flex;align-items:center;justify-content:center;transition:color .2s}.password-toggle-button:hover{color:var(--text-primary)}.forgot-password-button{background:none;border:none;color:var(--text-secondary);font-size:.85rem;cursor:pointer;text-decoration:underline;margin-top:.75rem;align-self:flex-start;padding:0}.forgot-password-button:hover{color:var(--accent)}.referral-input-wrapper{display:flex;gap:.5rem}.referral-input-wrapper input{flex-grow:1}.apply-button{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s}.apply-button:hover:not(:disabled){border-color:var(--accent)}.apply-button:disabled{opacity:.6;cursor:not-allowed}.validation-message{font-size:.85rem;margin-top:.5rem;text-align:center}.validation-message.success{color:var(--success-color)}.validation-message.error{color:var(--error-color)}.page-container{max-width:900px;margin:2rem auto}.profile-info{display:flex;flex-direction:column;gap:1rem}.info-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;border-bottom:1px solid var(--border-color)}.info-item:last-child{border-bottom:none}.info-label{font-weight:500;color:var(--text-secondary)}.info-value{font-weight:500;color:var(--text-primary)}.plus-badge{background-color:var(--accent);color:var(--background-dark);padding:.25rem .75rem;border-radius:9999px;font-size:.9rem;font-weight:600}.role-badge{text-transform:capitalize;background-color:var(--background-dark);color:var(--text-secondary);padding:.25rem .75rem;border-radius:9999px;font-size:.9rem;font-weight:500;border:1px solid var(--border-color)}@media (prefers-reduced-motion: no-preference){.profile-container .card{animation:fadeInUp .5s ease-out both}.profile-container>.card:nth-of-type(1){animation-delay:.1s}.profile-container>.card:nth-of-type(2){animation-delay:.2s}}@media (max-width: 768px){.page-title{font-size:1.8rem}.info-item{flex-direction:column;align-items:flex-start;gap:.5rem;padding:.75rem 0}.info-label{font-size:.9rem}}@media (max-width: 480px){.page-title{font-size:1.6rem}}.modal-body ul{list-style-type:"✓ ";padding-left:1.5rem;margin:1.5rem 0;color:var(--text-secondary);display:flex;flex-direction:column;gap:.75rem}.modal-body ul li::marker{color:var(--success-color);font-weight:700}.modal-body ul li span{font-weight:500;color:var(--text-primary)}.price-container{text-align:center;margin:1rem 0}.price{font-size:2.5rem;font-weight:700;text-align:center;color:var(--text-primary)}.price span{font-size:1rem;font-weight:500;color:var(--text-secondary)}.original-price{font-size:1.2rem;font-weight:400;color:var(--text-secondary);text-decoration:line-through;margin-right:.5rem}.discount-applied-message{font-size:.9rem;font-weight:500;color:var(--success-color);margin-top:.25rem}.subscribe-error{color:var(--error-color);text-align:center;margin-top:-.5rem;margin-bottom:1rem;font-size:.9rem}.pay-button{width:100%;background:linear-gradient(90deg,var(--hero-gradient-start),var(--hero-gradient-end));color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,opacity .2s}.pay-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px var(--shadow-color)}.pay-button:disabled{background:var(--border-color);cursor:not-allowed;opacity:.7}.pay-button-wrapper{position:relative;margin-top:1.5rem}.pay-button-wrapper[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:110%;left:50%;transform:translate(-50%);background-color:var(--background-dark);color:var(--text-primary);padding:.5rem .75rem;border-radius:.5rem;font-size:.8rem;font-weight:500;white-space:nowrap;opacity:0;transition:opacity .2s ease-in-out;pointer-events:none;z-index:20;border:1px solid var(--border-color)}.pay-button-wrapper:hover[data-tooltip]:after{opacity:1}.quiz-difficulty-options{display:flex;flex-direction:column;gap:1rem}.spinner-small{width:16px;height:16px;border:2px solid currentColor;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.quiz-view{max-width:800px;margin:2rem auto;width:100%;animation:fadeIn .5s}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.quiz-header h2{font-size:1.5rem}.quiz-timer{font-size:1.25rem;font-weight:600;color:var(--accent)}.quiz-progress-bar-container{width:100%;height:8px;background-color:var(--background-light);border-radius:4px;margin-bottom:2rem;overflow:hidden}.quiz-progress-bar{height:100%;background-color:var(--accent);border-radius:4px;transition:width .3s ease}.quiz-question-container{background-color:var(--background-light);padding:2rem;border-radius:.75rem}.quiz-question{font-size:1.3rem;font-weight:600;margin-bottom:1.5rem;color:var(--text-primary);line-height:1.4}.quiz-options{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem}.quiz-option{width:100%;padding:.85rem 1.25rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;text-align:left;cursor:pointer;transition:all .2s;font-size:1rem}.quiz-option:hover:not(:disabled){border-color:var(--accent);background-color:var(--background-light)}.quiz-option.selected{border-color:var(--accent);background-color:color-mix(in srgb,var(--accent) 15%,transparent)}.quiz-nav-buttons{display:flex;justify-content:space-between;margin-top:2rem}.quiz-nav-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.7rem 1.5rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer}.quiz-nav-button:disabled{opacity:.5;cursor:not-allowed}.quiz-instructions-screen{text-align:center;background-color:var(--background-light);padding:3rem 2rem;border-radius:.75rem;max-width:650px;margin:2rem auto;animation:fadeIn .5s}.quiz-instructions-screen h2{font-size:2rem;color:var(--accent);margin-bottom:1rem}.quiz-instructions-screen>p{color:var(--text-secondary);margin-bottom:1.5rem}.quiz-rules-list{list-style:none;padding:0;margin:2rem 0;display:inline-flex;flex-direction:column;gap:1rem;text-align:left;background-color:var(--background-dark);padding:1.5rem;border-radius:.5rem;border:1px solid var(--border-color)}.quiz-rules-list li{font-size:1rem;color:var(--text-primary)}.quiz-rules-list li span{font-weight:600;color:var(--text-secondary);min-width:100px;display:inline-block}.quiz-start-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.8rem 2rem;border:none;border-radius:.5rem;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s;margin-top:1.5rem;display:inline-flex;align-items:center;justify-content:center;gap:.75rem}.quiz-start-button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 5px 10px var(--shadow-color)}.quiz-start-button:disabled{background-color:var(--border-color);cursor:wait}.quiz-summary-screen{text-align:center;background-color:var(--background-light);padding:3rem 2rem;border-radius:.75rem}.quiz-summary-screen h2{font-size:2.5rem;color:var(--accent);margin-bottom:1rem}.quiz-summary-score{font-size:1.5rem;color:var(--text-primary);margin-bottom:2rem}.quiz-summary-score span{font-weight:700}.summary-actions{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin-bottom:2rem}.summary-button{background:var(--background-dark);border:1px solid var(--border-color);color:var(--text-primary);padding:.8rem 1.5rem;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.summary-button:hover{transform:translateY(-2px);border-color:var(--accent)}.summary-button.primary{background:var(--accent);color:var(--background-dark)!important;border-color:var(--accent)}.summary-button.primary:hover{box-shadow:0 5px 15px var(--shadow-color)}.quiz-review{margin-top:3rem;text-align:left}.quiz-review h3{text-align:center;margin-bottom:2rem;font-size:1.75rem}.review-item{padding:1.5rem;border:1px solid var(--border-color);border-radius:.5rem;margin-bottom:1.5rem}.review-item-q{font-weight:600;margin-bottom:1rem}.review-item-a{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.5rem}.review-item-a li{padding:.5rem 1rem;border-radius:.25rem}.review-item-a .correct{background-color:color-mix(in srgb,var(--success-color) 15%,transparent);border:1px solid var(--success-color)}.review-item-a .incorrect{background-color:color-mix(in srgb,var(--error-color) 15%,transparent);border:1px solid var(--error-color)}.review-item-a .user-answer:after{content:" (Your Answer)";font-weight:700;color:var(--accent);font-size:.8rem;margin-left:.5rem}.review-item .explanation{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-color);font-style:italic;color:var(--text-secondary)}.review-item .explanation strong{color:var(--text-primary);font-style:normal}@media (max-width: 768px){.quiz-view{margin:0;padding:1rem;height:calc(100vh - 65px);display:flex;flex-direction:column}.quiz-header{flex-shrink:0;margin-bottom:1rem}.quiz-header h2{font-size:1.2rem}.quiz-progress-bar-container{flex-shrink:0;margin-bottom:1rem}.quiz-question-container{flex-grow:1;overflow-y:auto;padding:1rem;margin-bottom:1rem;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.quiz-question-container::-webkit-scrollbar{width:6px}.quiz-question-container::-webkit-scrollbar-track{background:transparent}.quiz-question-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:3px}.quiz-question{font-size:1.1rem}.quiz-option{padding:.75rem 1rem;font-size:.95rem}.quiz-nav-buttons{flex-shrink:0;margin-top:0}.quiz-instructions-screen,.quiz-summary-screen{margin:0;padding:2rem 1.5rem 1.5rem;height:calc(100vh - 65px);overflow-y:auto;display:flex;flex-direction:column;justify-content:flex-start}.quiz-instructions-screen{height:auto;justify-content:center}.quiz-instructions-screen h2,.quiz-summary-screen h2{font-size:1.75rem}.quiz-summary-score{font-size:1.2rem}.quiz-rules-list{width:100%;padding:1rem;margin:1.5rem 0}.quiz-review h3{font-size:1.5rem}.review-item{padding:1rem}.quiz-summary-screen .quiz-review{margin-top:2rem}}@media (max-width: 400px){.quiz-rules-list li{display:flex;flex-direction:column;align-items:flex-start;gap:.25rem}.quiz-rules-list li span{min-width:unset;font-weight:500;color:var(--text-secondary)}}.feedback-modal-content .feedback-form{display:flex;flex-direction:column;gap:1.25rem}.feedback-modal-content .form-group{display:flex;flex-direction:column}.feedback-modal-content .form-group label{font-size:.9rem;font-weight:500;margin-bottom:.5rem;color:var(--text-secondary)}.feedback-modal-content .form-group input,.feedback-modal-content .form-group select,.feedback-modal-content .form-group textarea{padding:.75rem 1rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;font-size:1rem;transition:all .2s;font-family:inherit}.feedback-modal-content .form-group input:focus,.feedback-modal-content .form-group select:focus,.feedback-modal-content .form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.feedback-modal-content .form-group input:disabled{background-color:color-mix(in srgb,var(--background-dark) 50%,var(--background-light));cursor:not-allowed}.feedback-modal-content .radio-group{display:flex;gap:1.5rem;padding-top:.25rem}.feedback-modal-content .radio-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;font-weight:500;font-size:1rem}.feedback-modal-content .radio-label input[type=radio]{display:none}.feedback-modal-content .radio-custom{width:20px;height:20px;border-radius:50%;border:2px solid var(--border-color);display:inline-block;position:relative;transition:all .2s}.feedback-modal-content .radio-label:hover .radio-custom{border-color:var(--accent)}.feedback-modal-content .radio-label input:checked+.radio-custom{border-color:var(--accent)}.feedback-modal-content .radio-label input:checked+.radio-custom:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:10px;height:10px;border-radius:50%;background-color:var(--accent)}.feedback-submit-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:.5rem}.feedback-submit-button:hover{opacity:.9}.feedback-error{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent);border:1px solid var(--error-color);padding:.75rem;border-radius:.5rem;font-size:.9rem;text-align:center;margin-bottom:1rem}.feedback-submitted-content{text-align:center}.feedback-submitted-content p{margin-bottom:1.5rem;line-height:1.6}.custom-cheatsheet-modal-content{display:flex;flex-direction:column;gap:1rem;height:100%}.custom-search-section{padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.custom-search-section p{text-align:center;margin-bottom:1rem}.custom-search-bar{width:100%;padding:.75rem 1.25rem;font-size:1rem;border-radius:9999px;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);outline:none;transition:border-color .2s,box-shadow .2s,background-color .3s ease}.custom-search-bar:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.topic-selection-list{display:flex;flex-direction:column;gap:1.5rem;overflow-y:auto;flex-grow:1;padding:.25rem .5rem .25rem .25rem;margin-right:-.5rem;max-height:50vh;scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.topic-selection-list::-webkit-scrollbar{width:6px}.topic-selection-list::-webkit-scrollbar-track{background:transparent}.topic-selection-list::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:3px}.topic-group{display:flex;flex-direction:column}.topic-checkbox-label{display:flex;align-items:center;gap:.75rem;padding:.5rem;border-radius:.5rem;cursor:pointer;transition:background-color .2s;-webkit-user-select:none;-ms-user-select:none;user-select:none}.topic-checkbox-label.master{font-size:1.1rem;padding-left:.75rem;background-color:var(--background-dark)}.topic-checkbox-label:not(.master):hover{background-color:var(--background-dark)}.topic-checkbox-label input[type=checkbox]{display:none}.topic-checkbox-label .checkbox-custom{width:20px;height:20px;border:2px solid var(--border-color);border-radius:4px;display:inline-flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0;background-color:var(--background-light)}.topic-checkbox-label:hover .checkbox-custom{border-color:var(--accent)}.topic-checkbox-label input:checked+.checkbox-custom{background-color:var(--accent);border-color:var(--accent);background-image:url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e")}.topic-checkbox-label input:indeterminate+.checkbox-custom{background-color:var(--accent);border-color:var(--accent);background-image:url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M4 8a1 1 0 011-1h6a1 1 0 110 2H5a1 1 0 01-1-1z'/%3e%3c/svg%3e")}.topic-checkbox-label .topic-icon{font-size:1.5rem}.topic-checkbox-label .topic-title{font-weight:500}.term-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem;padding-left:2rem;margin-top:.75rem;border-left:2px solid var(--border-color);margin-left:1.5rem}.topic-checkbox-label.term .checkbox-custom{width:18px;height:18px}.topic-checkbox-label.term .topic-title{font-size:.95rem;color:var(--text-secondary)}.topic-checkbox-label.term:hover .topic-title{color:var(--text-primary)}.proceed-button{background:linear-gradient(90deg,var(--hero-gradient-start),var(--hero-gradient-end));color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;margin-top:.5rem;transition:transform .2s,box-shadow .2s;flex-shrink:0}.proceed-button:hover{transform:translateY(-2px);box-shadow:0 5px 15px var(--shadow-color)}@media (max-width: 768px){.topic-selection-list{max-height:40vh}.term-list{grid-template-columns:1fr;padding-left:1rem;margin-left:1rem}}.pricing-section{padding:2rem 0;background-color:var(--background-dark)}.pricing-subtitle{text-align:center;color:var(--text-secondary);max-width:600px;margin:-1.5rem auto 2rem;font-size:1.1rem;line-height:1.6}.pricing-grid{display:grid;grid-template-columns:1fr;gap:2rem;align-items:stretch;max-width:900px;margin:0 auto}@media (min-width: 768px){.pricing-grid{grid-template-columns:1fr 1fr}}.pricing-card{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;display:flex;flex-direction:column;transition:all .2s;position:relative}.pricing-card.featured{border-color:var(--accent);transform:scale(1.03);box-shadow:0 10px 30px var(--shadow-color)}.featured-badge{position:absolute;top:1rem;right:1rem;background-color:var(--accent);color:var(--background-dark);padding:.3rem .8rem;border-radius:9999px;font-size:.8rem;font-weight:700;text-transform:uppercase}.plan-name{font-size:1.25rem;font-weight:600;text-align:center;margin-bottom:.5rem}.plan-price{font-size:2.5rem;font-weight:700;text-align:center;color:var(--text-primary);line-height:1}.price-period{font-size:1rem;font-weight:500;color:var(--text-secondary);margin-left:.5rem}.plan-description{color:var(--text-secondary);text-align:center;min-height:40px;margin:.5rem 0 1.25rem}.features-list{list-style:none;margin-bottom:1.5rem;flex-grow:1}.features-list li{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem 0;border-bottom:1px solid var(--border-color);font-weight:500;font-size:.95rem}.features-list li:last-child{border-bottom:none}.features-list li.excluded{color:var(--text-secondary);text-decoration:line-through}.feature-icon{font-size:1rem;margin-top:.125rem}.feature-limit{display:block;font-size:.85rem;color:var(--text-secondary);font-weight:400}.pricing-button{width:100%;padding:.8rem 1rem;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;border:1px solid var(--border-color);background-color:var(--background-light);color:var(--text-primary)}.pricing-button:disabled{background-color:var(--background-dark);border-color:var(--background-dark);color:var(--text-secondary);cursor:not-allowed}.pricing-button.primary{border-color:transparent;background:linear-gradient(-45deg,var(--hero-gradient-start),var(--hero-gradient-end),var(--accent));background-size:400% 400%;animation:backgroundPan 10s ease infinite;color:var(--background-dark)!important}.pricing-button.primary:hover{opacity:.9;transform:translateY(-2px);box-shadow:0 5px 15px var(--shadow-color)}@media (prefers-reduced-motion: no-preference){.pricing-card{animation:fadeInUp .5s ease-out both}.pricing-grid .pricing-card:nth-child(1){animation-delay:.1s}.pricing-grid .pricing-card:nth-child(2){animation-delay:.2s}}@media (max-width: 768px){.pricing-card.featured{transform:scale(1)}}.competitive-edge-section{padding:5rem 0;background-color:var(--background-light);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.competitive-edge-subtitle{text-align:center;color:var(--text-secondary);max-width:600px;margin:-2rem auto 3rem;font-size:1.1rem;line-height:1.6}.comparison-table{max-width:900px;margin:0 auto;border:1px solid var(--border-color);border-radius:.75rem;overflow:hidden;background-color:var(--background-dark)}.comparison-header,.comparison-row{display:grid;grid-template-columns:1fr 1.5fr 1.5fr;align-items:center;gap:1rem}.comparison-header{background-color:color-mix(in srgb,var(--background-light) 50%,transparent);font-weight:600;padding:1rem 1.5rem;font-size:1rem;color:var(--text-secondary);border-bottom:1px solid var(--border-color)}.comparison-row{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-color);transition:background-color .2s}.comparison-row:last-child{border-bottom:none}.comparison-row:hover{background-color:var(--background-light)}.cell{font-size:.95rem;line-height:1.5}.feature-title{font-weight:600;color:var(--text-primary)}.other-platforms{color:var(--text-secondary)}.our-platform{color:var(--text-primary);font-weight:500;display:flex;align-items:center;gap:.75rem}.header-cell.our-platform{color:var(--accent)}.our-icon{font-size:1.2rem}.competitive-edge-cta{text-align:center;margin-top:4rem}.competitive-edge-cta .cta-title{font-size:1.75rem;font-weight:700;margin-bottom:.75rem}.competitive-edge-cta .cta-subtitle{color:var(--text-secondary);font-size:1.1rem;margin-bottom:1.5rem;max-width:550px;margin-left:auto;margin-right:auto}.competitive-edge-cta .cta-button{padding:.9rem 2.25rem;border:none;border-radius:.5rem;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .2s;display:inline-block;text-decoration:none;background:linear-gradient(-45deg,var(--hero-gradient-start),var(--hero-gradient-end),var(--accent));background-size:400% 400%;animation:backgroundPan 10s ease infinite;color:var(--background-dark)!important}.competitive-edge-cta .cta-button:hover{transform:translateY(-3px);box-shadow:0 8px 20px var(--shadow-color)}@media (prefers-reduced-motion: no-preference){.comparison-row{animation:fadeInUp .5s ease-out both}.comparison-body .comparison-row:nth-child(1){animation-delay:.1s}.comparison-body .comparison-row:nth-child(2){animation-delay:.2s}.comparison-body .comparison-row:nth-child(3){animation-delay:.3s}.comparison-body .comparison-row:nth-child(4){animation-delay:.4s}.comparison-body .comparison-row:nth-child(5){animation-delay:.5s}.comparison-body .comparison-row:nth-child(6){animation-delay:.6s}.competitive-edge-cta{animation:fadeInUp .6s ease-out .8s both}}@media (max-width: 768px){.competitive-edge-section{padding:3rem 1rem}.comparison-table{border:none;background-color:transparent}.comparison-header{display:none}.comparison-row{grid-template-columns:1fr;gap:0;padding:0;margin-bottom:2rem;border:1px solid var(--border-color);border-radius:.75rem;background-color:var(--background-dark);overflow:hidden}.comparison-row:last-child{margin-bottom:0}.comparison-row:hover{background-color:var(--background-dark)}.cell{padding:1rem;border-radius:0;background-color:transparent;border:none}.cell.feature-title{font-size:1.1rem;font-weight:600;text-align:center;background-color:var(--background-light);border-bottom:1px solid var(--border-color);padding:1rem;color:var(--text-primary)}.cell.other-platforms{border-bottom:1px dashed var(--border-color)}.other-platforms:before{content:"Other Platforms";display:block;font-weight:600;color:var(--text-secondary);margin-bottom:.5rem;font-size:.8rem;text-transform:uppercase}.our-platform:before{content:"InterviewCheatsheet";display:block;font-weight:600;color:var(--accent);margin-bottom:.5rem;font-size:.8rem;text-transform:uppercase}}.page-container.learn-hub-container{max-width:none}.learn-path-card{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:2rem;text-align:center;transition:all .2s ease-in-out;cursor:pointer;position:relative;overflow:hidden}.page-container.learn-programming-view-wrapper{max-width:none;display:flex;flex-direction:column;height:calc(100vh - 54px);padding-top:1rem;padding-bottom:1rem}.learn-programming-view-wrapper .page-header{flex-shrink:0;text-align:left;padding-bottom:1rem;margin-bottom:1rem;align-items:center}.learn-programming-view-wrapper .page-header .page-title{font-size:1.75rem;padding:0;margin:0}.learn-programming-view-wrapper .page-header .header-actions{display:flex;gap:1rem;align-items:center}.learn-view-container{display:flex;gap:2rem;padding:0;flex-grow:1;min-height:0;position:relative}.learn-sidebar{flex:0 0 280px;height:100%;padding-right:1.5rem;border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:flex-basis .3s ease-in-out,min-width .3s ease-in-out,opacity .3s ease-in-out}.learn-view-container.sidebar-collapsed .learn-sidebar{flex-basis:0;min-width:0;padding-right:0;border-right:none;opacity:0;overflow:hidden}.learn-view-container .panel-toggle{left:280px;transform:translate(-50%)}.learn-view-container.sidebar-collapsed .panel-toggle{left:1rem;transform:translate(0)}.learn-view-container.sidebar-collapsed .panel-toggle svg{transform:rotate(180deg)}.learn-sidebar nav{display:flex;flex-direction:column;height:100%;min-height:0}.sidebar-heading{font-size:1.1rem;font-weight:600;color:var(--text-primary);padding-bottom:.75rem;margin-bottom:.75rem;border-bottom:1px solid var(--border-color)}.sidebar-stages{flex-grow:1;overflow-y:auto;min-height:0;scrollbar-width:thin;scrollbar-color:var(--accent) transparent;padding-right:.5rem;margin-right:-1.5rem}.sidebar-stages::-webkit-scrollbar{width:6px}.stage-group{margin-bottom:.5rem}.stage-title{width:100%;padding:.75rem 1rem;text-align:left;background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.5rem;color:var(--text-primary);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit;position:relative;overflow:hidden}.stage-title-content{position:relative;z-index:1;display:flex;align-items:center;gap:.75rem}.stage-title:hover{border-color:var(--accent)}.stage-title.active{background-color:var(--background-light);border-color:var(--accent);color:var(--accent)}.stage-title.visited{border-left:4px solid var(--success-color)}.stage-title .stage-visited-icon{color:var(--success-color);font-size:1.1rem}.tutorial-list{list-style:none;padding-left:1rem;margin-top:.5rem;border-left:2px solid var(--border-color);animation:fadeIn .3s ease}.tutorial-list-item-wrapper{display:flex;align-items:center;gap:.5rem}.tutorial-list-item{flex-grow:1;width:100%;padding:.6rem 1rem;text-align:left;background:none;border:none;color:var(--text-secondary);font-size:.95rem;font-weight:500;cursor:pointer;border-radius:.5rem;transition:background-color .2s,color .2s;font-family:inherit}.tutorial-list-item:hover{background-color:var(--background-dark);color:var(--text-primary)}.tutorial-list-item.active{background-color:var(--accent);color:var(--background-dark)!important;font-weight:600}.tutorial-list-item.visited{color:var(--text-primary)}.tutorial-list-item.visited:not(.active){color:color-mix(in srgb,var(--text-primary) 70%,transparent)}.toggle-visited-sidebar-btn{flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;background-color:var(--background-dark);border:1px solid var(--border-color);color:transparent;border-radius:50%;cursor:pointer;transition:all .2s;font-size:.8rem}.toggle-visited-sidebar-btn.visited{background-color:var(--success-color);border-color:var(--success-color);color:var(--background-dark)}.tooltip-wrapper:hover .toggle-visited-sidebar-btn:not(.visited):not(.disabled){border-color:var(--success-color);color:var(--success-color)}.toggle-visited-sidebar-btn.disabled{cursor:pointer;opacity:.7}.toggle-visited-sidebar-btn.disabled:hover{opacity:1;color:var(--accent);border-color:var(--accent)}.learn-content-area{flex-grow:1;min-width:0;height:100%;overflow-y:auto;padding:0 2.5rem;scrollbar-width:thin;scrollbar-color:var(--accent) var(--background-dark)}.learn-content-area::-webkit-scrollbar{width:8px}.learn-content-area::-webkit-scrollbar-track{background:var(--background-dark)}.learn-content-area::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}.tutorial-article{max-width:100%;padding-bottom:80px;animation:fadeIn .5s ease-in-out}.visited-placeholder-stage{display:inline-block;width:14px;height:14px;border-radius:50%;border:2px solid var(--border-color);flex-shrink:0;opacity:.6}.tutorial-layout.comparison-mode{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}.tutorial-column{min-width:0}.language-heading{font-size:1.5rem;font-weight:600;color:var(--accent);margin-bottom:1.5rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.tutorial-content{padding-top:0}.tutorial-content h2{font-size:1.75rem;font-weight:600;margin-top:2.5rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.tutorial-content h3{font-size:1.4rem;font-weight:600;margin-top:2rem;margin-bottom:1rem}.tutorial-content p{font-size:1.05rem;color:var(--text-secondary);line-height:1.8;margin-bottom:1.5rem}.tutorial-content .tutorial-link{color:var(--accent);text-decoration:none;font-weight:500;border-bottom:1px dashed color-mix(in srgb,var(--accent) 70%,transparent);transition:all .2s;cursor:pointer}.tutorial-content .tutorial-link:hover{color:var(--text-primary);background-color:color-mix(in srgb,var(--accent) 20%,transparent);border-bottom-style:solid;border-bottom-color:var(--accent)}.tutorial-content .tutorial-link.visited{color:var(--text-secondary);border-bottom-style:solid;border-bottom-color:transparent;text-decoration:line-through;text-decoration-color:color-mix(in srgb,var(--text-secondary) 60%,transparent)}.tutorial-content .tutorial-link.visited:hover{color:var(--accent);background-color:transparent;text-decoration:none;border-bottom-color:var(--accent)}.tutorial-content .tutorial-link.visited:before{content:"✔";color:var(--success-color);margin-right:.25rem;text-decoration:none;display:inline-block}.code-block-wrapper-learn{position:relative;margin:1.5rem 0;background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;display:flex;flex-direction:column}.code-block-header{display:flex;justify-content:space-between;align-items:center;padding:.5rem 1rem;background-color:var(--background-light);border-bottom:1px solid var(--border-color);flex-shrink:0;border-top-left-radius:.75rem;border-top-right-radius:.75rem}.language-name{font-family:Fira Code,monospace;font-size:.9rem;color:var(--text-secondary);text-transform:uppercase;font-weight:500}.code-block-actions{display:flex;gap:.5rem}.code-action-button{background-color:var(--background-dark);border:1px solid var(--border-color);color:var(--text-secondary);padding:.4rem .8rem;border-radius:.5rem;cursor:pointer;font-size:.85rem;font-weight:500;transition:all .2s ease-in-out}.code-action-button:hover:not(:disabled){color:var(--text-primary);border-color:var(--text-primary)}.code-action-button.run{font-weight:600;color:var(--success-color)}.code-action-button.run:hover{background-color:var(--success-color);color:var(--background-dark);border-color:var(--success-color)}.code-action-button.reset{font-weight:600;color:var(--accent)}.code-action-button.reset:hover{background-color:var(--accent);color:var(--background-dark);border-color:var(--accent)}.code-action-button.copy.copied{background-color:var(--success-color);color:var(--background-dark);border-color:var(--success-color)}.code-editor-area{flex-grow:1;width:100%;min-height:150px;background-color:var(--background-dark);border:none;padding:1rem;font-family:Fira Code,monospace;font-size:.95rem;color:var(--text-primary);resize:vertical;line-height:1.6}.code-editor-area:last-child{border-bottom-left-radius:.75rem;border-bottom-right-radius:.75rem}.code-output-panel{border-top:1px dashed var(--border-color);padding:.75rem 1rem;background-color:var(--background-light);max-height:150px;overflow-y:auto;border-bottom-left-radius:.75rem;border-bottom-right-radius:.75rem}.code-output-panel pre{margin:0;padding:0;background:none;border:none;font-family:Fira Code,monospace;font-size:.9rem;color:var(--text-secondary);white-space:pre-wrap;word-break:break-word}.stage-title.water-fill-card{--progress-percent: 0%}.stage-title.water-fill-card:before{content:"";position:absolute;left:0;right:0;width:100%;height:var(--progress-percent);bottom:0;background-color:color-mix(in srgb,var(--accent) 50%,transparent);z-index:0;transition:height .5s ease-in-out}@keyframes fadeInScale{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.learn-sidebar-mobile-toggle,.mobile-sidebar-overlay,.learn-sidebar-mobile-dropdown{display:none}@media (max-width: 1024px){.learn-sidebar{display:none}.tutorial-layout.comparison-mode{grid-template-columns:1fr}.learn-programming-view-wrapper{height:auto;padding-top:2rem}.learn-view-container{flex-direction:column;height:auto;padding:0}.learn-content-area{height:auto;overflow-y:visible;padding:0 1rem}.panel-toggle{display:none}.floating-nav{position:static}.tutorial-article{padding-bottom:2rem}.tutorial-navigation{margin-top:2rem}.floating-back-button{width:40px;height:40px}.floating-back-button svg{width:20px;height:20px}.learn-sidebar-mobile-toggle{display:flex;position:fixed;top:calc(60px + 1rem);left:1rem;z-index:45;width:40px;height:40px;border-radius:50%;background-color:var(--background-dark);border:1px solid var(--border-color);align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);box-shadow:0 4px 12px var(--shadow-color);transition:all .2s ease}.learn-sidebar-mobile-toggle:hover{border-color:var(--accent);color:var(--accent)}.learn-sidebar-mobile-toggle svg{width:20px;height:20px}.mobile-sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;z-index:149;opacity:0;transition:opacity .3s ease-out;pointer-events:none}.mobile-sidebar-overlay.is-open{opacity:1;pointer-events:auto}.learn-sidebar-mobile-dropdown{display:flex;position:fixed;top:0;left:0;width:300px;max-width:80vw;height:100vh;transform:translate(-100%);transition:transform .3s ease-out;z-index:150;background-color:var(--background-light);border-right:1px solid var(--border-color);box-shadow:0 5px 15px var(--shadow-color);flex-direction:column;padding:1rem}.learn-sidebar-mobile-dropdown.is-open{transform:translate(0)}.learn-sidebar-mobile-dropdown .sidebar-stages{padding:0;margin:0}}@media (max-width: 480px){.learn-programming-view-wrapper .page-header .page-title{font-size:1.5rem}}@keyframes spin{to{transform:rotate(360deg)}}.spinner-small{width:14px;height:14px;border:2px solid currentColor;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}.code-action-button.run{display:inline-flex;align-items:center;gap:.5rem}.code-action-button:disabled{opacity:.7;cursor:not-allowed}.code-action-button.run.running{cursor:wait}.tutorial-list-item-wrapper .tooltip-wrapper[data-tooltip]:after{top:50%;bottom:auto;left:auto;right:100%;transform:translateY(-50%);margin-right:12px;white-space:normal;width:150px;text-align:center}.tutorial-list-item-wrapper .tooltip-wrapper[data-tooltip]:before{content:"";position:absolute;top:50%;right:100%;transform:translateY(-50%);margin-right:6px;border-width:6px;border-style:solid;border-color:transparent transparent transparent var(--background-dark);opacity:0;pointer-events:none;transition:opacity .2s;z-index:21}.tutorial-list-item-wrapper .tooltip-wrapper:hover[data-tooltip]:before{opacity:1}.tooltip-wrapper{position:relative;display:inline-flex;align-items:center;justify-content:center}.tooltip-wrapper[data-tooltip]:after{content:attr(data-tooltip);position:absolute;top:100%;left:50%;transform:translate(-50%);margin-top:8px;background-color:var(--background-dark);color:var(--text-primary);padding:.5rem .75rem;border-radius:.5rem;font-size:.8rem;font-weight:500;white-space:nowrap;opacity:0;transition:opacity .2s;pointer-events:none;z-index:20;border:1px solid var(--border-color)}.tooltip-wrapper:hover[data-tooltip]:after{opacity:1}.floating-back-button{background-color:var(--background-dark);border:1px solid var(--border-color);width:48px;height:48px;padding:0;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-primary);position:fixed;z-index:45;box-shadow:0 4px 12px var(--shadow-color);opacity:1;visibility:visible;transform:translateY(0);transition:all .2s,opacity .3s ease,visibility .3s ease,transform .3s ease;right:2rem;left:auto;top:calc(54px + 1rem)}.floating-back-button:hover:not(:disabled){border-color:var(--accent);color:var(--accent);transform:scale(1.1)}.floating-back-button svg{width:24px;height:24px}.learn-controls{display:flex;justify-content:center;align-items:center;gap:2rem;margin-bottom:2.5rem}.reset-button{background-color:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s}.reset-button:hover{color:var(--error-color);border-color:var(--error-color)}.toggle-switch-wrapper{position:relative;display:inline-flex}.toggle-switch-wrapper.disabled{cursor:pointer}.toggle-switch-wrapper.disabled .toggle-switch{opacity:.6;pointer-events:none}.toggle-switch-wrapper[data-tooltip]:after{content:attr(data-tooltip);position:absolute;bottom:120%;left:50%;transform:translate(-50%);background-color:var(--background-dark);color:var(--text-primary);padding:.4rem .8rem;border-radius:.5rem;font-size:.85rem;white-space:nowrap;opacity:0;transition:opacity .2s;pointer-events:none;border:1px solid var(--border-color);box-shadow:0 2px 5px var(--shadow-color);z-index:20}.toggle-switch-wrapper:hover[data-tooltip]:after{opacity:1}.toggle-switch{display:flex;align-items:center;gap:.75rem;font-weight:500;color:var(--text-secondary)}.toggle-switch input{display:none}.toggle-switch .slider{position:relative;width:50px;height:26px;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:13px;cursor:pointer;transition:background-color .2s}.toggle-switch .slider:before{content:"";position:absolute;top:3px;left:4px;width:20px;height:20px;background-color:var(--text-secondary);border-radius:50%;transition:transform .2s}.toggle-switch input:checked+.slider{background-color:var(--accent)}.toggle-switch input:checked+.slider:before{transform:translate(22px);background-color:var(--background-dark)}.learn-path-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.language-card{background-color:var(--background-light);border:2px solid var(--border-color);border-radius:.75rem;padding:2.5rem 1rem;text-align:center;transition:all .2s ease-in-out;cursor:pointer;position:relative;overflow:hidden}.language-card-content{position:relative;z-index:1}.language-title{font-size:1.35rem;font-weight:600;color:var(--text-primary);transition:margin-top .2s}.language-card:hover{transform:translateY(-5px);border-color:var(--accent)}.language-card.state-selected{background-color:var(--accent);border-color:var(--accent);color:var(--background-dark);transform:scale(1.05)}.language-card.state-selected .language-title{color:var(--background-dark)}.language-card.state-selected:after{content:"Learning";position:absolute;top:.75rem;right:.75rem;font-size:.8rem;font-weight:600;padding:.25rem .5rem;border-radius:99px;background-color:var(--background-dark);color:var(--accent)}.language-card.state-comparable:after{content:"Compare with";position:absolute;top:.75rem;left:50%;transform:translate(-50%);background-color:var(--background-dark);color:var(--accent);padding:.25rem .8rem;border-radius:99px;font-size:.8rem;font-weight:600;white-space:nowrap;z-index:2}.language-card.state-comparable .language-title{margin-top:1.75rem}.get-started-content{text-align:center}.get-started-content p{margin-top:-1rem;margin-bottom:2rem;font-size:1rem;color:var(--text-secondary)}.get-started-options{display:flex;flex-direction:column;gap:1rem}.get-started-option{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1.5rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.75rem;cursor:pointer;transition:all .2s;text-align:center}.get-started-option:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 5px 10px var(--shadow-color)}.option-icon{font-size:2rem;margin-bottom:.5rem}.option-title{font-size:1.2rem;font-weight:600}.option-description{font-size:.9rem;color:var(--text-secondary);max-width:300px}.learn-section{padding:5rem 0;background-color:var(--background-light);border-top:1px solid var(--border-color)}.learn-header{text-align:center;margin-bottom:3rem}.learn-subtitle{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.1rem;line-height:1.6}.learn-path-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.learn-path-card{background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;padding:2rem;text-align:center;transition:all .2s ease-in-out;cursor:pointer;position:relative;overflow:hidden;min-height:14.5rem;display:flex;flex-direction:column;justify-content:center}.learn-path-card:hover:not(.disabled){transform:translateY(-5px);box-shadow:0 12px 25px -5px var(--shadow-color);border-color:var(--accent)}.learn-path-card.disabled{cursor:not-allowed;opacity:.6;filter:grayscale(80%)}.learn-path-content{position:relative;z-index:1}.learn-path-icon{font-size:3rem;line-height:1;margin-bottom:1.5rem}.learn-path-title{font-size:1.35rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}.learn-path-description{font-size:.95rem;color:var(--text-secondary);line-height:1.6}@media (prefers-reduced-motion: no-preference){.learn-path-card{animation:fadeInUp .5s ease-out both}.learn-path-grid .learn-path-card:nth-child(1){animation-delay:.1s}.learn-path-grid .learn-path-card:nth-child(2){animation-delay:.2s}.learn-path-grid .learn-path-card:nth-child(3){animation-delay:.3s}.learn-path-grid .learn-path-card:nth-child(4){animation-delay:.4s}}.water-fill-card{--progress-percent: 0%}.water-fill-card:before{content:"";position:absolute;left:0;width:100%;height:var(--progress-percent);bottom:0;transition:height .5s ease-in-out;background-color:color-mix(in srgb,var(--accent) 50%,transparent);z-index:0}.learn-path-grid-container{scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.learn-path-grid-container::-webkit-scrollbar{width:8px}.learn-path-grid-container::-webkit-scrollbar-track{background:transparent;margin-block:.5rem}.learn-path-grid-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}@media (min-width: 769px){.learn-path-grid-container{max-height:18rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem}}@media (max-width: 768px){.learn-path-grid-container{max-height:32rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1rem}}@media (max-width: 600px){.learn-path-grid{grid-template-columns:1fr}}.referral-code-card{text-align:center}.referral-code-card h3{font-size:1.5rem;margin-bottom:1rem}.referral-code-card p{color:var(--text-secondary);font-size:.9rem;max-width:500px;margin:1rem auto 0}.code-display{display:inline-flex;align-items:center;background-color:var(--background-dark);border:1px dashed var(--border-color);border-radius:.5rem;padding:.75rem 1.5rem;font-family:Fira Code,monospace;margin-top:1rem}.code-display span{font-size:1rem;font-weight:600;color:var(--accent);margin-right:1.5rem;word-break:break-all}.copy-button{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:.5rem 1rem;border-radius:.5rem;cursor:pointer;transition:all .2s;flex-shrink:0}.copy-button:hover{border-color:var(--accent)}.copy-button.copied{background-color:var(--success-color);color:var(--background-dark);border-color:var(--success-color)}.share-buttons-container{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem}.share-button{width:44px;height:44px;border-radius:50%;background-color:var(--background-light);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .2s}.share-button:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}.share-button svg{width:24px;height:24px;fill:currentColor}.referral-stats{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:2rem}.withdrawal-form{display:flex;align-items:flex-end;gap:1rem;margin-bottom:1rem}.withdrawal-form .form-group{flex-grow:1}.withdrawal-form label{font-size:.9rem;font-weight:500;margin-bottom:.5rem;color:var(--text-secondary)}.withdrawal-form input{width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;font-size:1rem;transition:all .2s}.withdrawal-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.withdrawal-form .upgrade-button{flex-shrink:0}.withdrawal-note{font-size:.9rem;color:var(--text-secondary);margin-top:-.5rem;text-align:center}.withdrawal-message{text-align:center;margin-top:1rem;font-weight:500}.withdrawal-message.success{color:var(--success-color)}.withdrawal-message.error{color:var(--error-color)}.table-container table{width:100%;border-collapse:collapse}.table-container th,.table-container td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border-color)}.table-container th{color:var(--text-secondary);font-weight:600}.reward-amount{color:var(--success-color);font-weight:600}.status-badge{padding:.25rem .75rem;border-radius:99px;font-size:.85rem;font-weight:600;text-transform:capitalize}.status-badge.pending{background-color:color-mix(in srgb,var(--accent) 20%,transparent);color:var(--accent)}.status-badge.completed{background-color:color-mix(in srgb,var(--success-color) 20%,transparent);color:var(--success-color)}@media (max-width: 600px){.withdrawal-form{flex-direction:column;align-items:stretch}}.update-password-modal-content{padding:0}.update-password-modal-content .auth-prompt{text-align:center;color:var(--text-secondary);margin-bottom:1.5rem;font-size:1rem;line-height:1.5}.update-password-modal-content .auth-form{display:flex;flex-direction:column;gap:1.25rem;margin-top:.5rem}.update-password-modal-content .form-group{display:flex;flex-direction:column}.update-password-modal-content .form-group label{font-size:.9rem;font-weight:500;margin-bottom:.5rem;color:var(--text-secondary)}.update-password-modal-content .form-group input{padding:.75rem 1rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;font-size:1rem;transition:all .2s}.update-password-modal-content .form-group input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.update-password-modal-content .auth-submit-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:.5rem}.update-password-modal-content .auth-submit-button:hover{opacity:.9}.update-password-modal-content .auth-error{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent);border:1px solid var(--error-color);padding:.75rem;border-radius:.5rem;font-size:.9rem;text-align:center;margin-bottom:1rem}.update-password-modal-content .auth-success{color:var(--success-color);background-color:color-mix(in srgb,var(--success-color) 10%,transparent);border:1px solid var(--success-color);padding:.75rem;border-radius:.5rem;font-size:.9rem;text-align:center;margin-bottom:1rem}.update-password-modal-content .password-input-wrapper{position:relative;display:flex;align-items:center}.update-password-modal-content .password-input-wrapper input{width:100%;padding-right:3rem}.update-password-modal-content .password-toggle-button{position:absolute;right:1rem;background:none;border:none;cursor:pointer;color:var(--text-secondary);padding:.25rem;display:flex;align-items:center;justify-content:center;transition:color .2s}.update-password-modal-content .password-toggle-button:hover{color:var(--text-primary)}.topic-card{background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;padding:2rem;text-align:center;transition:transform .2s ease-in-out,box-shadow .2s ease-in-out,background-color .3s ease,border-color .3s ease;position:relative;height:14.5rem;overflow:hidden}.topic-card-clickable-area{cursor:pointer;height:100%;display:flex;flex-direction:column;justify-content:center;position:relative;z-index:1}.topic-card:hover{transform:translateY(-5px);box-shadow:0 12px 25px -5px var(--shadow-color);border-color:var(--accent);z-index:10}.topic-card:before{content:"";position:absolute;left:0;bottom:0;width:100%;height:var(--progress-percent, 0%);background-color:color-mix(in srgb,var(--accent) 20%,transparent);transition:height .4s ease-in-out;z-index:0}.toggle-visited-wrapper{display:none}.card-icon{font-size:3rem;line-height:1;margin-bottom:1rem}.card-title{font-size:1.25rem;font-weight:600;margin-bottom:.5rem;color:var(--text-primary)}.card-description{font-size:.9rem;color:var(--text-secondary)}.custom-cheatsheet-section{padding:3rem 0;margin-bottom:3rem;background-color:var(--background-light);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);animation:zoomIn .5s ease-in-out}.custom-cheatsheet-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem;margin-bottom:3rem}.custom-cheatsheet-header .section-heading{margin-bottom:0;text-align:left}.custom-cheatsheet-actions{display:flex;gap:1rem;animation:fadeInUp .4s ease-out .4s both}.custom-cheatsheet-button{padding:.6rem 1.2rem;border-radius:.5rem;font-size:.95rem;font-weight:600;cursor:pointer;border:1px solid var(--border-color);transition:all .2s}.custom-cheatsheet-button.edit{background-color:var(--background-dark);color:var(--text-primary)}.custom-cheatsheet-button.edit:hover{border-color:var(--accent);color:var(--accent)}.custom-cheatsheet-button.discard{background-color:transparent;color:var(--text-secondary)}.custom-cheatsheet-button.discard:hover{background-color:color-mix(in srgb,var(--error-color) 15%,transparent);border-color:var(--error-color);color:var(--error-color)}@keyframes zoomIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.ai-plus-features-section{padding:3rem 0;margin-bottom:2rem;background-color:var(--background-light);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}.ai-plus-header{text-align:center;margin-bottom:2.5rem}.ai-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.ai-feature-card{background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;padding:2rem;text-align:center;transition:all .2s ease-in-out;cursor:pointer;font-family:inherit;color:inherit;display:flex;flex-direction:column;position:relative}.ai-feature-card:hover:not(.disabled){transform:translateY(-5px);box-shadow:0 12px 25px -5px var(--shadow-color);border-color:var(--accent)}.ai-feature-card.disabled{cursor:not-allowed;opacity:.6;filter:grayscale(80%)}.ai-feature-card.disabled:hover{transform:none;box-shadow:none;border-color:var(--border-color)}.coming-soon-badge{position:absolute;top:1rem;right:1rem;background-color:var(--background-dark);color:var(--text-secondary);padding:.3rem .8rem;border-radius:9999px;font-size:.8rem;font-weight:600;border:1px solid var(--border-color);z-index:2}.ai-feature-icon{font-size:2.5rem;line-height:1;margin-bottom:1rem;display:block}.ai-feature-title{font-size:1.25rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}.ai-feature-description{font-size:.95rem;color:var(--text-secondary);line-height:1.6;flex-grow:1}.page-container.prepare-view-container{max-width:none}.prepare-view-container .cheatsheet-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.prepare-view-container .no-results{color:var(--text-secondary);grid-column:1 / -1;text-align:center;padding:2rem}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion: no-preference){.prepare-view-container .cheatsheet-grid .topic-card{animation:fadeInUp .5s ease-out both}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(1){animation-delay:.05s}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(2){animation-delay:.1s}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(3){animation-delay:.15s}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(4){animation-delay:.2s}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(5){animation-delay:.25s}.prepare-view-container .cheatsheet-grid .topic-card:nth-child(6){animation-delay:.3s}}.prepare-section{padding:5rem 0;background-color:var(--background-dark);border-top:1px solid var(--border-color)}.prepare-header{text-align:center;margin-bottom:3rem}.prepare-subtitle{color:var(--text-secondary);max-width:600px;margin:0 auto;font-size:1.1rem;line-height:1.6}.prepare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.explore-all-container{text-align:center;margin-top:3rem}.explore-all-button{background-color:transparent;border:1px solid var(--border-color);color:var(--accent);padding:.8rem 1.5rem;border-radius:9999px;font-weight:600;cursor:pointer;transition:all .2s;font-size:1rem}.explore-all-button:hover{background-color:var(--accent);color:var(--background-dark);border-color:var(--accent)}.prepare-grid-container{scrollbar-width:thin;scrollbar-color:var(--accent) transparent}.prepare-grid-container::-webkit-scrollbar{width:8px}.prepare-grid-container::-webkit-scrollbar-track{background:transparent;margin-block:.5rem}.prepare-grid-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}@media (min-width: 769px){.prepare-grid-container{max-height:18rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;background-color:var(--background-light)}}@media (max-width: 768px){.prepare-grid-container{max-height:32rem;overflow-y:auto;overflow-x:hidden;border:1px solid var(--border-color);border-radius:.75rem;padding:1rem;background-color:var(--background-light)}}@media (max-width: 600px){.prepare-grid{grid-template-columns:1fr}}.mock-interview-modal-content{position:relative}.mock-interview-modal-content p{text-align:center;margin-top:1rem;margin-bottom:1.5rem}.modal-back-button{position:absolute;top:0;left:0;background:none;border:none;color:var(--text-secondary);font-size:1rem;line-height:1;padding:.5rem;cursor:pointer}.modal-back-button:hover{color:var(--accent)}.interview-type-grid{display:grid;grid-template-columns:1fr;gap:1rem}.interview-type-button{background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;text-align:center;cursor:pointer;font-family:inherit;transition:all .2s;position:relative}.interview-type-button:hover:not(:disabled){border-color:var(--accent);transform:translateY(-3px);box-shadow:0 5px 10px var(--shadow-color)}.interview-type-button.disabled{cursor:not-allowed;opacity:.6;filter:grayscale(80%)}.coming-soon-badge{position:absolute;top:.75rem;right:.75rem;background-color:var(--background-dark);color:var(--text-secondary);padding:.25rem .6rem;border-radius:9999px;font-size:.75rem;font-weight:600;border:1px solid var(--border-color)}.type-icon{font-size:2rem;margin-bottom:.75rem;display:block}.type-title{font-size:1.2rem;font-weight:600;color:var(--text-primary)}.type-description{display:block;font-size:.9rem;color:var(--text-secondary);margin-top:.5rem}.difficulty-options{display:flex;flex-direction:column;gap:1rem}.difficulty-button{width:100%;padding:1.25rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;cursor:pointer;transition:all .2s;font-size:1.1rem;font-weight:600;text-align:left;display:flex;align-items:center;gap:1rem}.difficulty-button:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 5px 10px var(--shadow-color)}.difficulty-button span{font-size:1.5rem}.difficulty-subtitle{font-size:.9rem;color:var(--text-secondary);font-weight:400}.topic-search-bar{width:100%;padding:.75rem 1.25rem;font-size:1rem;border-radius:9999px;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);outline:none;transition:all .2s;margin-bottom:1.5rem}.topic-search-bar:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.topic-selection-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;max-height:40vh;overflow-y:auto;padding:.25rem}.topic-selection-button{background-color:var(--background-light);border:1px solid var(--border-color);color:var(--text-primary);padding:1rem;border-radius:.5rem;font-size:.9rem;font-weight:500;text-align:center;cursor:pointer;transition:all .2s ease-in-out;font-family:inherit;display:flex;flex-direction:column;align-items:center;gap:.75rem;min-height:100px}.topic-selection-button:hover{transform:translateY(-3px);border-color:var(--accent)}.topic-selection-button .topic-icon{font-size:1.5rem}.topic-selection-button .topic-title{font-weight:600}.coding-details-form{display:flex;flex-direction:column;gap:1.25rem}.coding-details-form .form-group{display:flex;flex-direction:column}.coding-details-form .form-group label{font-size:.9rem;font-weight:500;margin-bottom:.5rem;color:var(--text-secondary)}.coding-details-form .form-group input,.coding-details-form .form-group select{padding:.75rem 1rem;border:1px solid var(--border-color);background-color:var(--background-dark);color:var(--text-primary);border-radius:.5rem;font-size:1rem;transition:all .2s;font-family:inherit}.coding-details-form .form-group input:focus,.coding-details-form .form-group select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}.start-interview-button{background-color:var(--accent);color:var(--background-dark)!important;padding:.8rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s;margin-top:.5rem}.start-interview-button:hover{opacity:.9}.mock-interview-container{max-width:900px}.mock-interview-container .page-subtitle{text-transform:capitalize}.interview-card{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;display:flex;flex-direction:column;min-height:60vh}.interview-transcript{flex-grow:1;overflow-y:auto;padding:1rem;background-color:var(--background-dark);border-radius:.5rem;margin-bottom:1.5rem;display:flex;flex-direction:column;gap:1rem}.transcript-item{line-height:1.6}.transcript-item strong{color:var(--text-primary)}.transcript-item.user{color:var(--text-secondary)}.transcript-item.ai{color:var(--accent)}.interview-controls{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-color);padding-top:1.5rem}.interview-setup-steps{display:flex;gap:1rem;width:100%;justify-content:center}.interview-setup-steps .interview-button{flex-grow:1}.status-indicators-wrapper{display:flex;align-items:center;gap:1rem}.status-indicator{font-weight:600;display:flex;align-items:center;gap:.75rem}.status-indicator.listening{color:var(--success-color)}.status-indicator.speaking{color:var(--accent)}.status-indicator:before{content:"";display:inline-block;width:12px;height:12px;border-radius:50%;animation:pulse 1.5s infinite}.status-indicator.listening:before{background-color:var(--success-color)}.status-indicator.speaking:before{background-color:var(--accent)}.status-badge{padding:.4rem .8rem;border-radius:99px;font-size:.85rem;font-weight:600;background-color:var(--background-dark);border:1px solid var(--border-color)}.status-badge.screen{color:var(--accent);border-color:var(--accent)}@keyframes pulse{0%{transform:scale(.8);opacity:.7}50%{transform:scale(1);opacity:1}to{transform:scale(.8);opacity:.7}}.interview-button{padding:.8rem 1.5rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.interview-button:disabled{opacity:.5;cursor:not-allowed;background-color:var(--border-color)}.interview-button.start{background-color:var(--accent);color:var(--background-dark)}.interview-button.start:not(:disabled):hover{opacity:.9}.interview-button.stop{background-color:var(--error-color);color:var(--background-dark)}.interview-button.stop:hover{opacity:.9}.report-view-container{max-width:900px}.report-feedback-section h3,.report-transcript-section h3,.report-code-analysis-section h3{font-size:1.5rem;margin-bottom:1.5rem}.feedback-category{margin-bottom:1.5rem;border-left:3px solid var(--border-color);padding-left:1.5rem}.feedback-category:last-child{margin-bottom:0}.feedback-category h4{font-size:1.1rem;color:var(--accent);margin-bottom:.5rem}.feedback-category p{color:var(--text-secondary);line-height:1.7;white-space:pre-wrap}.report-transcript{max-height:400px;overflow-y:auto;padding:1rem;background-color:var(--background-dark);border-radius:.5rem;display:flex;flex-direction:column;gap:1rem}.report-transcript .transcript-item{line-height:1.6}.report-transcript .transcript-item strong{color:var(--text-primary)}.report-transcript .transcript-item.user{color:var(--text-secondary)}.report-transcript .transcript-item.ai{color:var(--accent)}.complexity-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem}.complexity-item{background-color:var(--background-dark);border:1px solid var(--border-color);padding:1rem;border-radius:.5rem;text-align:center}.complexity-item h4{font-size:1rem;color:var(--text-secondary);font-weight:500;margin-bottom:.5rem}.complexity-value{font-family:Fira Code,monospace;font-size:1.2rem;font-weight:600;color:var(--accent)}.final-code-submission h4{font-size:1.1rem;color:var(--accent);margin-bottom:1rem}.code-block-wrapper-report{position:relative;background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.75rem;overflow:hidden}.code-block-wrapper-report .code-block-header{padding:.5rem 1rem;background-color:var(--background-light);border-bottom:1px solid var(--border-color)}.code-block-wrapper-report .language-name{font-family:Fira Code,monospace;font-size:.9rem;color:var(--text-secondary);text-transform:uppercase;font-weight:500}.code-block-wrapper-report pre{margin:0;padding:1rem;white-space:pre-wrap;word-break:break-all}.code-block-wrapper-report code{font-family:Fira Code,monospace;font-size:.9rem}.page-container{max-width:900px;margin:2rem auto;padding:0 1.5rem}.page-header{border-bottom:1px solid var(--border-color);padding-bottom:1.5rem;margin-bottom:2rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.page-header-content{flex-grow:1}.page-title{font-size:2.5rem;font-weight:700;color:var(--text-primary)}.page-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-top:.5rem}.page-container .back-button{margin-bottom:0;background-color:var(--background-light);padding:.6rem 1.2rem;border-radius:.5rem;border:1px solid var(--border-color);color:var(--accent);font-size:1rem;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:.5rem;transition:all .2s}.page-container .back-button:hover{color:var(--accent);border-color:var(--accent)}.card{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;margin-bottom:1.5rem}.dashboard-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:2rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.5rem;flex-grow:1}.stat-card{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:1.5rem;text-align:center}.stat-value{font-size:2.5rem;font-weight:700;color:var(--accent);line-height:1}.stat-label{font-size:1rem;color:var(--text-secondary);margin-top:.5rem}.streak-counter{text-align:center;flex-shrink:0}.streak-counter .stat-value{font-size:3.5rem}.streak-label{font-size:1rem;color:var(--text-secondary);font-weight:500}.upgrade-cta{text-align:center;padding:2rem}.upgrade-cta h3{font-size:1.5rem;font-weight:600;margin-bottom:.5rem}.upgrade-cta p{color:var(--text-secondary);margin-bottom:1.5rem}.upgrade-button{padding:.8rem 2rem;border:none;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;background:linear-gradient(-45deg,var(--hero-gradient-start),var(--hero-gradient-end),var(--accent));background-size:400% 400%;animation:backgroundPan 10s ease infinite;color:var(--background-dark)!important}.upgrade-button:hover{transform:translateY(-2px);box-shadow:0 5px 15px var(--shadow-color)}.quiz-history{scroll-margin-top:80px}#interview-history-section h3,.quiz-history h3{font-size:1.5rem;margin-bottom:1rem}.table-container{max-height:500px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--accent) var(--background-light)}.table-container::-webkit-scrollbar{width:8px}.table-container::-webkit-scrollbar-track{background:transparent}.table-container::-webkit-scrollbar-thumb{background-color:var(--accent);border-radius:4px}.quiz-history-table{width:100%;border-collapse:collapse}.quiz-history-table th,.quiz-history-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border-color)}.quiz-history-table th{color:var(--text-secondary);font-weight:600;font-size:.9rem;position:sticky;top:0;background-color:var(--background-light)}.quiz-history-table td{color:var(--text-primary)}.quiz-history-table tr:last-child td{border-bottom:none}.quiz-history-table tbody tr:hover{background-color:var(--background-dark)}.expand-button{background:none;border:none;color:var(--accent);cursor:pointer;font-size:1.2rem}.view-report-button{background:var(--background-dark);border:1px solid var(--border-color);color:var(--text-primary);padding:.4rem .8rem;border-radius:.5rem;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s}.view-report-button:hover{border-color:var(--accent);color:var(--accent)}.details-row td{padding:0}.quiz-details-content{background-color:var(--background-dark);padding:1rem 1.5rem}.quiz-details-content h5{color:var(--accent);margin-bottom:1rem}.quiz-details-list{list-style:none;display:flex;flex-direction:column;gap:1rem}.quiz-details-item p{font-weight:600;margin-bottom:.25rem}.quiz-details-item .explanation{font-style:italic;color:var(--text-secondary);border-left:2px solid var(--border-color);padding-left:.75rem;font-size:.9rem}@keyframes fadeInPage{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.page-container{animation:fadeInPage .5s ease-in-out}@media (prefers-reduced-motion: no-preference){.dashboard-container .stat-card,.dashboard-container .card{animation:fadeInUp .5s ease-out both}.stats-grid .stat-card:nth-child(1){animation-delay:.1s}.stats-grid .stat-card:nth-child(2){animation-delay:.2s}.streak-counter{animation-delay:.2s}.dashboard-container .upgrade-cta{animation-delay:.3s}.dashboard-container .quiz-history{animation-delay:.4s}}@media (max-width: 768px){.page-title{font-size:1.8rem}.dashboard-header{flex-direction:column;align-items:stretch;gap:1rem}.stats-grid{grid-template-columns:1fr 1fr}.table-container{max-height:45vh}.quiz-history-table{border:none}.quiz-history-table thead{display:none}.quiz-history-table tr{display:block;margin-bottom:1rem;border:1px solid var(--border-color);border-radius:.5rem;padding:.5rem}.quiz-history-table tr.details-row{padding:0;border-top:none;border-radius:0 0 .5rem .5rem;margin-top:-1rem;margin-bottom:1rem}.quiz-history-table td{display:flex;justify-content:space-between;align-items:center;padding:.75rem .5rem;border-bottom:1px dashed var(--border-color);text-align:right}.quiz-history-table tr:not(.details-row) td:last-child{border-bottom:none}.quiz-history-table td:before{content:attr(data-label);font-weight:600;color:var(--text-secondary);text-align:left;margin-right:1rem}.details-row td{display:block;padding:0;border:none}.details-row td:before{display:none}.quiz-details-item{text-align:left}.quiz-details-item .explanation{font-style:italic;color:var(--text-secondary);font-size:.9rem;border-left:2px solid var(--border-color);padding-left:.75rem;margin-top:.5rem;border-right:none;padding-right:0;margin-left:0}}@media (max-width: 480px){.page-title{font-size:1.6rem}.stat-value{font-size:2rem}.streak-counter .stat-value{font-size:3rem}}.coding-interview-container{max-width:none;height:calc(100vh - 54px);display:flex;flex-direction:column;padding:1rem;gap:1rem}.submission-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#000c;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:300;color:var(--text-primary);text-align:center}.submission-overlay p{font-size:1.2rem;font-weight:500;margin-top:1rem}.submission-overlay p:last-child{font-size:.9rem;color:var(--text-secondary)}.instructions-view{width:100%;max-width:900px;margin:auto;text-align:center;padding:2rem;display:flex;flex-direction:column;align-items:center;justify-content:center}.instructions-view h2{font-size:2rem;margin-bottom:2rem}.instruction-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;width:100%;margin-bottom:3rem}.instruction-card{background-color:var(--background-light);padding:1.5rem;border-radius:.75rem;border:1px solid var(--border-color)}.instruction-icon{font-size:2rem;margin-bottom:1rem;display:block}.instruction-card h3{font-size:1.1rem;margin-bottom:.5rem}.instruction-card p{font-size:.9rem;color:var(--text-secondary);line-height:1.6}.start-button-wrapper .interview-button.start.large{padding:1rem 3rem;font-size:1.2rem}.start-button-wrapper .interview-button.start{display:inline-flex;align-items:center;gap:.75rem}.coding-interview-header{flex-shrink:0;background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;padding:.75rem 1rem;display:flex;justify-content:space-between;align-items:center}.control-group-left,.control-group-right{display:flex;align-items:center;gap:1.5rem}.timer-display{font-family:Fira Code,monospace;font-size:1.5rem;font-weight:600;color:var(--accent)}.coding-arena-layout{display:grid;gap:0;flex-grow:1;min-height:0}.resizer{background-color:var(--border-color);cursor:col-resize;transition:background-color .2s}.resizer:hover{background-color:var(--accent)}.problem-panel,.editor-panel{background-color:var(--background-light);border:1px solid var(--border-color);border-radius:.75rem;display:flex;flex-direction:column;min-height:0;overflow:hidden}.problem-panel{padding:1.5rem;overflow-y:auto}.problem-panel h3{font-size:1.5rem;color:var(--accent);margin-bottom:1rem}.problem-content{text-align:left;width:100%}.placeholder-text{color:var(--text-secondary)}.problem-content h3,.problem-content h4,.problem-content p,.problem-content ul,.problem-content pre{text-align:left;align-self:stretch}.problem-content h4{font-size:1.1rem;margin-top:1.5rem;margin-bottom:.5rem;font-weight:600}.problem-content p,.problem-content li{color:var(--text-secondary);line-height:1.7}.problem-content ul{list-style-position:inside;padding-left:.5rem;align-self:flex-start}.problem-panel pre{align-self:stretch;background-color:var(--background-dark);padding:1rem;border-radius:.5rem;white-space:pre-wrap;word-break:break-word}.problem-content code{background-color:var(--background-dark);padding:.2rem .4rem;border-radius:.25rem;font-family:Fira Code,monospace;font-size:.9em}.editor-panel{padding:0}.code-editor-area{flex-grow:1;width:100%;height:100%;background-color:var(--background-dark);border:none;padding:1rem;font-family:Fira Code,monospace;font-size:.95rem;color:var(--text-primary);resize:none;line-height:1.6;border-radius:.75rem}.code-editor-area:focus{outline:none}.test-results-panel{border-top:1px dashed var(--border-color);background-color:var(--background-dark);flex-basis:250px;flex-shrink:0;overflow-y:auto;display:flex;flex-direction:column}.test-tabs{display:flex;flex-shrink:0;border-bottom:1px solid var(--border-color);padding:.5rem 1rem 0;gap:.5rem}.tab-button{padding:.6rem 1rem;background:none;border:1px solid transparent;border-bottom:none;color:var(--text-secondary);cursor:pointer;border-radius:.5rem .5rem 0 0;font-weight:500;display:flex;align-items:center;gap:.5rem;transition:all .2s}.tab-button.active{background-color:var(--background-light);color:var(--text-primary);border-color:var(--border-color);border-bottom-color:var(--background-light);transform:translateY(1px)}.status-icon{font-size:.8rem}.tab-button.success{color:var(--success-color)}.tab-button.failed{color:var(--error-color)}.spinner-small-tab{width:12px;height:12px;border:2px solid currentColor;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}.test-case-content{padding:1rem;overflow-y:auto;flex-grow:1;background-color:var(--background-light)}.output-group{margin-bottom:1rem}.output-group:last-child{margin-bottom:0}.output-group label{font-weight:600;color:var(--text-secondary);font-size:.9rem;display:block;margin-bottom:.25rem}.output-group pre{margin:0;padding:.75rem;background:var(--background-dark);border:1px solid var(--border-color);border-radius:.5rem;font-family:Fira Code,monospace;font-size:.9rem;color:var(--text-primary);white-space:pre-wrap;word-break:break-word}.output-group pre.output-error{color:var(--error-color);background-color:color-mix(in srgb,var(--error-color) 10%,transparent);border-color:var(--error-color)}.interview-button.run{background-color:var(--success-color);color:var(--background-dark)}.error-message{color:var(--error-color);font-weight:500}@media (max-width: 1024px){.coding-interview-header{flex-direction:column;gap:.75rem;padding:.75rem}.timer-display{order:-1}.coding-arena-layout{display:flex;flex-direction:column;gap:1rem}.resizer{display:none}.problem-panel{flex-basis:40%;max-height:40vh}.editor-panel{flex-grow:1}}