*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#1a1a2e;--bg-sidebar:#16213e;--bg-input:#0f3460;--bg-user:#533483;--bg-assistant:#1a1a3e;--text:#e4e4e4;--text-muted:#8892a4;--accent:#7c3aed;--accent-hover:#6d28d9;--border:#2a2a4a;--danger:#ef4444;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}body{background:var(--bg);height:100vh;overflow:hidden}#root{height:100vh}.app{height:100vh;display:flex}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);flex-direction:column;gap:16px;width:280px;min-width:280px;padding:16px;display:flex;overflow-y:auto}.new-chat-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:10px;font-size:14px;font-weight:500;transition:background .2s}.new-chat-btn:hover{background:var(--accent-hover)}.sidebar-section 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.message-label{text-align:right}.message-content{border-radius:12px;padding:12px 16px;line-height:1.6}.message-user .message-content{background:var(--bg-user);border-bottom-right-radius:4px}.message-assistant .message-content{background:var(--bg-assistant);border:1px solid var(--border);border-bottom-left-radius:4px}.message-content p{margin:0 0 8px}.message-content p:last-child{margin-bottom:0}.message-content pre{background:#0000004d;border-radius:6px;margin:8px 0;padding:12px;overflow-x:auto}.message-content code{font-family:Fira Code,Cascadia Code,Consolas,monospace;font-size:13px}.message-content ul,.message-content ol{margin:8px 0;padding-left:20px}.cursor-blink{color:var(--accent);font-weight:700;animation:1s infinite blink}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:0}}.chat-input-form{border-top:1px solid var(--border);background:var(--bg-sidebar);gap:8px;padding:16px 24px;display:flex}.chat-input-form input{background:var(--bg-input);border:1px solid 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