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8rem;display:flex;position:relative}.empty{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:1rem;padding:2rem 0;animation:.5s both rise;display:flex}.empty-mark{background:var(--accent);width:52px;height:52px;color:var(--bg);border-radius:13px;justify-content:center;align-items:center;margin-bottom:.25rem;display:inline-flex}.empty-mark svg{width:26px;height:26px}.empty-title{letter-spacing:-.01em;font-size:clamp(1.9rem,4vw,2.6rem);font-weight:600;line-height:1.15}.empty-sub{color:var(--text-dim);max-width:34rem;font-size:1.02rem}.suggestions{flex-wrap:wrap;justify-content:center;gap:.6rem;max-width:40rem;margin-top:1rem;display:flex}.suggestion-chip{font:inherit;color:var(--text);background:var(--bg-elevated);border:1px solid var(--border);cursor:pointer;border-radius:8px;padding:.55rem 1rem;font-size:.88rem;transition:transform .15s,border-color .15s,color .15s}.suggestion-chip:hover{border-color:var(--accent-ring);color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-2px)}.conversation{flex-direction:column;gap:1.75rem;display:flex}.turn{flex-direction:column;gap:.9rem;animation:.35s both rise;display:flex}.bubble-row{align-items:flex-start;gap:.6rem;display:flex}.user-row{justify-content:flex-end}.assistant-row{justify-content:flex-start}.avatar{background:var(--accent);width:30px;height:30px;color:var(--bg);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;margin-top:.15rem;display:inline-flex}.assistant-block{flex-direction:column;gap:.6rem;max-width:calc(100% - 3rem);display:flex}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;border-radius:18px;padding:.85rem 1.1rem;font-size:.98rem;line-height:1.55}.user-bubble{background:var(--user-bubble);color:var(--user-bubble-text);max-width:min(32rem,100%);box-shadow:var(--shadow-sm);border-bottom-right-radius:6px}.assistant-bubble{background:var(--bg-elevated);border:1px solid var(--border-soft);color:var(--text);box-shadow:var(--shadow-sm);border-bottom-left-radius:6px}.error-bubble{color:var(--danger);border-color:color-mix(in srgb, var(--danger) 30%, var(--border));background:color-mix(in srgb, var(--danger) 6%, var(--bg-elevated))}.typing{align-items:center;gap:5px;padding:1.05rem 1.1rem;display:flex}.typing .dot{background:var(--accent);opacity:.6;border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite bounce}.typing .dot:nth-child(2){animation-delay:.15s}.typing .dot:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-5px)}}.sources{flex-wrap:wrap;gap:.4rem;display:flex}.source-chip{color:var(--text-dim);background:var(--accent-bg);text-overflow:ellipsis;white-space:nowrap;border:1px solid #0000;border-radius:6px;align-items:center;gap:.35rem;max-width:16rem;padding:.3rem .7rem;font-size:.76rem;text-decoration:none;transition:color .15s,border-color .15s;display:inline-flex;overflow:hidden}.source-chip:hover{color:var(--accent);border-color:var(--accent-ring)}.source-chip svg{opacity:.8;flex-shrink:0}.composer{z-index:10;background:linear-gradient(to top, var(--bg) 55%, transparent);padding:1.1rem 1.25rem 1.5rem;position:fixed;bottom:0;left:0;right:0}.composer-inner{background:var(--bg-elevated);border:1px solid var(--border);width:min(760px,100%);box-shadow:var(--shadow-lg);border-radius:999px;align-items:center;gap:.5rem;margin:0 auto;padding:.4rem .4rem .4rem 1.15rem;transition:border-color .15s,box-shadow .15s;display:flex}.composer-inner:focus-within{border-color:var(--accent-ring);box-shadow:var(--shadow-lg), 0 0 0 4px var(--accent-bg)}.composer-inner input{color:var(--text-h);font:inherit;background:0 0;border:none;outline:none;flex:1;padding:.5rem 0;font-size:.98rem}.composer-inner input::placeholder{color:var(--text-dim)}.composer-inner button{background:var(--accent);width:40px;height:40px;color:var(--bg);cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;transition:transform .15s,opacity .15s,background .15s;display:inline-flex}.composer-inner button:hover:not(:disabled){background:var(--accent-hover);transform:scale(1.06)}.composer-inner button:disabled{opacity:.4;cursor:default}@media (width<=640px){.assistant-block{max-width:calc(100% - 2.2rem)}.user-bubble{max-width:85%}}