:root{--primary:#013524;--primary-container:#1e4c39;--primary-fixed:#bceed3;--primary-fixed-dim:#a1d1b8;--on-primary:#fff;--on-primary-container:#8cbba3;--secondary:#4f6359;--secondary-container:#cfe5d9;--on-secondary:#fff;--on-secondary-container:#54675e;--tertiary:#3d2a0e;--tertiary-container:#564022;--tertiary-fixed:#ffddb4;--on-tertiary:#fff;--on-tertiary-container:#cbac86;--surface:#f9f9f9;--surface-container:#eee;--surface-container-low:#f3f3f3;--surface-container-lowest:#fff;--surface-container-high:#e8e8e8;--surface-container-highest:#e2e2e2;--surface-dim:#dadada;--on-surface:#1a1c1c;--on-surface-variant:#414944;--outline:#717973;--outline-variant:#c0c9c2;--error:#ba1a1a;--error-container:#ffdad6;--success:#34d399;--warning:#fbbf24;--sidebar-width:280px;--header-height:64px;--container-max:1200px;--container-narrow:800px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--shadow-sm:0 1px 3px #1a1c1c0a;--shadow-md:0 4px 12px #1a1c1c0f;--shadow-lg:0 12px 32px #1a1c1c14;--shadow-hover:0 8px 24px #1e4c391a}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}html,body{background:var(--surface);height:100%;color:var(--on-surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Manrope,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}h1,h2,h3,h4,h5,h6{color:var(--on-surface);font-family:Manrope,sans-serif;font-weight:700;line-height:1.2}a{color:var(--primary-container);text-decoration:none;transition:color .2s}a:hover{color:var(--primary)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--outline-variant);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--outline)}.btn{border-radius:var(--radius-md);cursor:pointer;white-space:nowrap;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 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6px;font-size:.6875rem;font-weight:600}.chat-date-group{color:var(--outline);text-transform:uppercase;letter-spacing:.04em;padding:8px 12px 2px;font-size:.6875rem;font-weight:600}.chat-list-item{color:var(--on-surface-variant);cursor:pointer;border-radius:0;align-items:center;gap:8px;padding:7px 10px;font-size:.8125rem;transition:background .15s,color .15s;display:flex;position:relative}.chat-list-item:hover{background:var(--surface-container-low);color:var(--on-surface)}.chat-list-item.active{background:var(--primary-fixed);color:var(--primary);font-weight:600}.chat-list-item .title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.chat-list-item .delete-btn,.chat-list-item .edit-btn{color:var(--outline);cursor:pointer;border-radius:var(--radius-sm);opacity:0;background:0 0;border:none;flex-shrink:0;align-items:center;padding:4px;transition:opacity .15s,color .15s;display:flex}.chat-list-item__actions{opacity:0;pointer-events:none;background:linear-gradient(to right, 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var(--surface-container-lowest);border-radius:50%;width:7px;height:7px;position:absolute;top:-2px;right:-3px}.chat-list-item__status--streaming{background:var(--primary-container);animation:1.5s ease-in-out infinite chat-status-pulse}@keyframes chat-status-pulse{0%,to{opacity:.4;transform:scale(1)}50%{opacity:1;transform:scale(1.3)}}.chat-list-item__status--ready{background:var(--primary-fixed-dim);animation:.2s chat-status-ready-in}@keyframes chat-status-ready-in{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.chat-list-item__status--error{background:var(--error)}.new-chat-btn{background:var(--primary);color:var(--on-primary);border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;margin:8px 16px;padding:10px;font-family:inherit;font-size:.8125rem;font-weight:600;transition:background .15s,box-shadow 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