.chat-container{flex-direction:column;max-width:900px;height:100vh;margin:0 auto;display:flex}.chat-header{border-bottom:1px solid var(--border);flex-shrink:0;padding:16px 24px}.chat-header-content{align-items:center;gap:12px;display:flex}.chat-header h1{letter-spacing:-.02em;margin:0;font-size:18px;font-weight:600}.model-badge{color:var(--muted);background:var(--surface);border:1px solid var(--border);font-size:12px;font-family:var(--font-geist-mono),monospace;border-radius:12px;padding:2px 10px}.messages-area{flex-direction:column;flex:1;gap:24px;padding:24px;display:flex;overflow-y:auto}.empty-state{text-align:center;color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.empty-state h2{color:var(--foreground);margin:0 0 8px;font-size:24px;font-weight:500}.empty-state p{margin:0;font-size:14px}.message{flex-direction:column;display:flex}.message-bubble{max-width:100%}.message.user .message-bubble{align-self:flex-end;max-width:80%}.message-role{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:12px;font-weight:600}.message.user .message-role{text-align:right}.message-content{white-space:pre-wrap;word-break:break-word;border-radius:12px;padding:12px 16px;font-size:15px;line-height:1.65}.message.user .message-content{background:var(--user-bubble);border-radius:12px 12px 4px}.message.assistant .message-content{background:var(--assistant-bubble);border:1px solid var(--border);border-radius:12px 12px 12px 4px}.cursor{background:var(--accent);vertical-align:text-bottom;width:2px;height:1em;margin-left:2px;animation:.8s step-end infinite blink;display:inline-block}@keyframes blink{50%{opacity:0}}.error-bar{color:#f87171;background:#3b1111;border-top:1px solid #6b2020;flex-shrink:0;justify-content:space-between;align-items:center;padding:10px 24px;font-size:13px;display:flex}.error-bar button{color:#f87171;cursor:pointer;background:0 0;border:none;padding:0;font-size:13px;text-decoration:underline}.input-area{border-top:1px solid var(--border);flex-shrink:0;padding:16px 24px 20px}.input-wrapper{background:var(--surface);border:1px solid var(--border);border-radius:16px;align-items:flex-end;gap:8px;padding:8px 8px 8px 16px;transition:border-color .15s;display:flex}.input-wrapper:focus-within{border-color:var(--accent)}.input-wrapper textarea{resize:none;color:var(--foreground);background:0 0;border:none;outline:none;flex:1;max-height:200px;padding:4px 0;font-family:inherit;font-size:15px;line-height:1.5}.input-wrapper textarea::placeholder{color:var(--muted)}.send-button{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;transition:background .15s;display:flex}.send-button:hover:not(:disabled){background:var(--accent-hover)}.send-button:disabled{opacity:.3;cursor:not-allowed}.input-hint{color:var(--muted);text-align:center;margin-top:8px;font-size:11px}@media (max-width:640px){.chat-header{padding:12px 16px}.messages-area{gap:16px;padding:16px}.message.user .message-bubble{max-width:90%}.input-area{padding:12px 16px 16px}.empty-state h2{font-size:20px}}