@keyframes gradient-shift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.input-section #text-paste{width:100%;min-height:200px;padding:15px;border:1px solid var(--input-border);border-radius:6px;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:.95em;resize:vertical;margin-top:10px;box-shadow:inset 0 1px 3px var(--card-shadow)}.input-section #text-paste:focus{border-color:#1d8aff;box-shadow:0 0 0 .2rem #1d8aff40;outline:none}.toolbar{margin-top:.5rem;display:flex;gap:1rem;justify-content:space-between;align-items:center}.toolbar .model-selector{flex:1}.chat-button{margin-inline-start:auto}.spinner{display:inline-block;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:var(--header-text);width:1.2em;height:1.2em;animation:spin 1s linear infinite;margin-left:10px}@keyframes spin{to{rotate:360deg}}.output-tabs{margin-bottom:25px;display:flex;gap:clamp(5px,1.5vw,10px);border-bottom:1px solid var(--section-title-border);padding-bottom:12px;flex-wrap:wrap}.output-tabs+.output-content,.output-tabs+.output-content+.output-content{padding-block-start:0}.tab-button{padding:clamp(10px,2vw,12px) clamp(15px,3vw,20px);cursor:pointer;border:none;background-color:transparent;border-bottom:3px solid transparent;border-radius:6px 6px 0 0;transition:all .3s ease;font-size:clamp(.95rem,2vw,1.05rem);font-weight:500;color:var(--footer-text)}.tab-button:hover{background-color:var(--footer-bg);color:#343a40}.tab-button.active{color:#1d8aff;border-bottom:3px solid #1d8aff;background-color:var(--card-bg)}.tab-button i{margin-right:8px}.save-pdf-button{background-color:transparent;border:none;padding:0;margin:0;cursor:pointer}.output-content{display:none;padding:20px 0;margin-top:15px}.output-content.active-output{display:block;animation:fadeIn .5s ease-in-out}@keyframes fadeIn{0%{opacity:0;translate:0 10px}to{opacity:1;translate:0 0}}.output-content article{margin-top:10px;padding:0 5px}.output-content h3,.output-content h4{color:#0056b3;margin-top:1.8rem;margin-bottom:1rem;padding-bottom:6px;border-bottom:1px solid #eee;font-weight:600}.output-content h3.h3,.output-content h4.h3{font-size:1.4rem}.output-content h3.h4,.output-content h4.h4{font-size:1.2rem}.output-content ul,.output-content ol{margin-left:30px;margin-bottom:1.1em;padding-left:15px}.output-content ul li,.output-content ol li{margin-bottom:.6em}.output-content p{margin-bottom:1em}.output-content p.correct-explanation{margin-top:1em}.chat-button-container{display:flex;place-content:end}