:root{--bg: #0a0e1e;--bg-panel: #0d1226;--surface: #10152b;--surface-hover: #161c38;--line: rgba(255, 255, 255, .08);--text: #eef0fb;--text-dim: #8891b0;--purple: #7c5cff;--cyan: #22d3ee;--gradient: linear-gradient(135deg, #9b6bff 0%, #7c5cff 45%, #3fb8f0 75%, #22e0f0 100%);--radius: 12px;--serif: "Sora", "Inter", sans-serif;--sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--sans);background:var(--bg);color:var(--text)}button{font-family:var(--sans);cursor:pointer}.app{display:grid;grid-template-columns:260px 1fr;height:100vh}.sidebar{background:var(--bg-panel);border-right:1px solid var(--line);color:var(--text);display:flex;flex-direction:column;padding:22px 16px}.brand{display:flex;align-items:center;gap:10px;margin:4px 4px 26px}.brand img{width:22px;height:auto}.brand span{font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:.2px}.new-chat-btn{background:var(--gradient);color:#fff;border:none;border-radius:var(--radius);padding:10px 14px;font-weight:600;font-size:14px;margin-bottom:20px;box-shadow:0 4px 20px #7c5cff40}.sidebar-section{font-size:12px;color:var(--text-dim);margin:18px 4px 8px}.sidebar-item{padding:8px 10px;border-radius:8px;font-size:14px;color:#eef0fbcc;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-item:hover{background:var(--surface-hover)}.sidebar-legal{margin-top:auto;font-size:10.5px;line-height:1.4;color:#eef0fb59;padding:4px}.main{display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--bg)}.thread{flex:1;overflow-y:auto;padding:40px 0 20px}.thread-inner{max-width:720px;margin:0 auto;padding:0 24px}.empty-state{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px}.empty-state img{width:44px;margin-bottom:6px}.empty-state h2{font-family:var(--serif);font-size:30px;font-weight:700;margin:0}.empty-state p{color:var(--text-dim);margin:0;max-width:420px}.message{display:flex;gap:14px;margin-bottom:26px;align-items:flex-start}.message.user{flex-direction:row-reverse}.avatar{width:30px;height:30px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:700;font-size:13px}.avatar.assistant{background:var(--gradient);color:#fff}.avatar.user{background:var(--surface);border:1px solid var(--line);color:var(--text)}.bubble{max-width:80%;line-height:1.6;font-size:15px;color:var(--text)}.message.user .bubble{background:var(--surface);border:1px solid var(--line);padding:10px 16px;border-radius:14px 14px 3px}.message.assistant .bubble{padding-top:4px}.bubble pre{background:#05070f;color:#d8e0ff;padding:14px;border-radius:8px;overflow-x:auto;font-size:13px;border:1px solid var(--line)}.bubble a{color:var(--cyan)}.bubble img.generated{max-width:100%;border-radius:var(--radius);margin-top:8px;display:block}.attachment-chip{display:inline-flex;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line);padding:4px 10px;border-radius:20px;font-size:12px;margin-bottom:8px;color:var(--text-dim)}.composer-wrap{padding:16px 24px 24px;border-top:1px solid var(--line);background:var(--bg)}.composer{max-width:720px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:10px 12px}.composer-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.composer textarea{width:100%;border:none;outline:none;resize:none;font-family:var(--sans);font-size:15px;max-height:160px;padding:6px 4px;background:transparent;color:var(--text)}.composer 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pulse{0%,80%,to{opacity:.25;transform:scale(.85)}40%{opacity:1;transform:scale(1)}}.install-banner{display:flex;align-items:center;gap:12px;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 20px;font-size:13px;color:var(--text-dim)}.install-banner button{background:var(--gradient);color:#fff;border:none;border-radius:8px;padding:6px 12px;font-size:12.5px;font-weight:600}.install-banner .dismiss{margin-left:auto;background:none;color:var(--text-dim);font-size:13px;padding:2px 6px}