.sidebar{width:260px;background-color:#f7f7f7;border-right:1px solid #e0e0e0;display:flex;flex-direction:column;height:100dvh;flex-shrink:0;position:relative;z-index:10}.sidebar-header{padding:1rem;border-bottom:1px solid #e0e0e0}.new-chat-btn-sidebar{width:100%;padding:10px 16px;background-color:#fff;border:1px solid #dcdcdc;border-radius:18px;cursor:pointer;font-size:.9rem;font-weight:500;color:#333;transition:background-color .2s,box-shadow .2s}.new-chat-btn-sidebar:hover{background-color:#f0f0f0;box-shadow:0 1px 3px #0000000d}.sidebar-chat-list{flex-grow:1;overflow-y:auto;padding:.5rem}.chat-list-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;border-radius:8px;cursor:pointer;margin-bottom:4px;transition:background-color .2s}.chat-list-item p{margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.9rem;color:#202124;flex-grow:1;padding-right:10px}.chat-list-item:hover{background-color:#e0e0e0}.chat-list-item.active{background-color:#d1e3ff}.chat-list-item.active:hover{background-color:#c5d9f8}.delete-chat-btn{background:none;border:none;color:#888;font-size:1.5rem;font-weight:300;cursor:pointer;padding:0 5px;border-radius:50%;line-height:1;display:none;flex-shrink:0}.chat-list-item:hover .delete-chat-btn{display:block}.delete-chat-btn:hover{background-color:#d8d8d8;color:#000}.sidebar-footer{flex-shrink:0;padding:1rem;border-top:1px solid #e0e0e0;background-color:#f0f0f0}.sidebar-footer p{margin:0;text-align:center;font-size:.8rem;color:#555}.sidebar-footer a{color:#007bff;font-weight:600;text-decoration:none}.sidebar-footer a:hover{text-decoration:underline}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:#fff;margin:0;color:#333;overflow:hidden}.app-layout{display:flex;height:100vh;width:100vw}.main-chat-area{flex-grow:1;display:flex;flex-direction:column;height:100vh;background-color:#fff}.app-header{padding:1.5rem 2rem;text-align:left;background-color:#fff;border-bottom:1px solid #f0f0f0;margin-bottom:0;flex-shrink:0}.app-header h1{margin:0;font-size:1.3rem;color:#1f1f1f;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.new-chat-btn{display:none}.chat-window{flex-grow:1;padding:2rem;overflow-y:auto;display:flex;flex-direction:column;gap:20px}.chat-bubble{padding:10px 14px;border-radius:18px;max-width:80%;word-wrap:break-word}.chat-bubble.user{background-color:#007bff;color:#fff;align-self:flex-end;border-bottom-right-radius:4px}.chat-bubble.user p{margin:0}.chat-bubble.model{background-color:#fff;color:#333;align-self:stretch;max-width:100%;padding:0;border-radius:0}.chat-bubble.model p{font-size:1rem;line-height:1.6;margin-bottom:1rem;color:#1f1f1f}.chat-bubble.model h1,.chat-bubble.model h2,.chat-bubble.model h3{font-weight:600;margin-top:2rem;margin-bottom:.5rem;color:#000}.chat-bubble.model h1{font-size:1.8rem}.chat-bubble.model h2{font-size:1.5rem}.chat-bubble.model h3{font-size:1.25rem}.chat-bubble.model ul,.chat-bubble.model ol{padding-left:2rem;margin-bottom:1rem;line-height:1.6}.chat-bubble.model strong{font-weight:700}.chat-bubble.model em{font-style:italic}.chat-form{display:flex;padding:1.5rem 2rem;border-top:1px solid #f0f0f0;position:relative;bottom:0;background-color:#fff;flex-shrink:0}.chat-form input{flex-grow:1;border:1px solid #ccc;border-radius:18px;padding:12px 18px;font-size:1rem}.chat-form input:focus{outline:none;border-color:#007bff;box-shadow:0 0 5px #007bff4d}.chat-form button{background-color:#007bff;color:#fff;border:none;border-radius:18px;padding:12px 18px;margin-left:10px;cursor:pointer;font-size:1rem}.chat-form button:disabled{background-color:#a0cfff;cursor:not-allowed}.loading-indicator-container{display:flex;justify-content:center;padding:1rem}.loading-indicator{width:60px;display:flex;justify-content:space-evenly;align-items:center}.loading-indicator span{height:10px;width:10px;background-color:#007bff;border-radius:50%;animation:pulse 1.2s infinite ease-in-out}.loading-indicator span:nth-child(1){animation-delay:0s}.loading-indicator span:nth-child(2){animation-delay:.2s}.loading-indicator span:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,to{opacity:.3;transform:scale(.7)}50%{opacity:1;transform:scale(1)}}.chat-bubble.model{position:relative;background-color:#fff;color:#333;align-self:stretch;max-width:100%;padding:0;border-radius:0}.copy-btn{position:absolute;top:0;right:0;background-color:#f0f0f0;border:1px solid #ddd;color:#555;padding:4px 8px;font-size:.8rem;border-radius:6px;cursor:pointer;transition:all .2s;opacity:0;z-index:10}.chat-bubble.model:hover .copy-btn{opacity:1}.copy-btn:hover{background-color:#e0e0e0}.copy-btn.copied{background-color:#d1e7dd;color:#0d6837;border-color:#a3d9b8;opacity:1}.menu-btn{display:none;background:none;border:none;padding:8px;cursor:pointer;margin-right:1rem}.menu-btn span{display:block;width:24px;height:3px;background-color:#333;margin:5px 0;transition:all .3s}.mobile-overlay{display:none;position:fixed;inset:0;background-color:#0006;z-index:998}@media(max-width:768px){body{overflow:auto}.app-layout{display:block;height:auto;width:100%}.main-chat-area{width:100%;height:100dvh}.menu-btn{display:block}.app-header{display:flex;align-items:center;padding:1rem}.app-header h1{font-size:1.1rem;padding:0;margin:0}.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:999;transform:translate(-100%);transition:transform .3s ease-in-out;box-shadow:2px 0 10px #0000001a}.app-layout.sidebar-open .sidebar{transform:translate(0)}.app-layout.sidebar-open .mobile-overlay{display:block}.chat-window,.chat-form{padding:1rem}.summary-textarea{min-height:60px;flex-shrink:1}}@keyframes fadeInContent{0%{opacity:0}to{opacity:1}}@keyframes fadeInBubble{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-window{animation:fadeInContent .3s ease-out}.chat-bubble{animation:fadeInBubble .4s ease-out}button,.new-chat-btn-sidebar,.chat-list-item,.copy-btn,.delete-chat-btn{transition:all .2s ease-in-out}.chat-form input{transition:border-color .2s ease,box-shadow .2s ease}.mode-selector-container{display:flex;flex-direction:column;align-items:center;padding:.5rem 2rem;border-bottom:1px solid #f0f0f0}.mode-selector{display:flex;background-color:#f0f0f0;border-radius:18px;padding:4px}.mode-btn{border:none;border-radius:14px;padding:8px 16px;cursor:pointer;background-color:transparent;color:#555;font-weight:500;font-size:.9rem;transition:all .3s ease}.mode-btn.active{background-color:#fff;color:#007bff;box-shadow:0 1px 3px #0000001a}.mode-btn:disabled{color:#888;cursor:not-allowed}.mode-btn.active:disabled{color:#007bff;opacity:.7}.mode-locked-tooltip{font-size:.75rem;color:#999;margin-top:4px}.chat-form{border-top:none;padding-top:1.5rem}.summary-input-area{display:flex;flex-direction:column;width:100%;gap:10px}.summary-textarea{width:100%;min-height:120px;border:1px solid #ccc;border-radius:12px;padding:12px 18px;font-size:1rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;resize:vertical;transition:border-color .2s ease,box-shadow .2s ease}.summary-textarea:focus{outline:none;border-color:#007bff;box-shadow:0 0 5px #007bff4d}.summary-actions{display:flex;justify-content:space-between;align-items:center}input[type=file]{display:none}.file-input-label{background-color:#f0f0f0;border:1px solid #ddd;color:#555;padding:12px 18px;border-radius:18px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .2s}.file-input-label:hover{background-color:#e0e0e0}.file-input-label span{margin-left:8px}.file-parsing-status{font-size:.9rem;color:#555;margin-left:10px}