:root{--primary:#6366f1;--bg:#0f172a;--card:#1e293b;--text:#f8fafc;--accent:#22d3ee}body{background-color:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:Inter,system-ui,sans-serif}.app-container{flex-direction:column;gap:2rem;max-width:1200px;min-height:100vh;margin:0 auto;padding:2rem;display:flex}header{border-bottom:1px solid #334155;justify-content:space-between;align-items:center;padding-bottom:1rem;display:flex}.logo{background:linear-gradient(to right, var(--primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem;font-weight:800}.main-grid{grid-template-columns:350px 1fr;gap:2rem;display:grid}.sidebar{background:var(--card);border-radius:1rem;flex-direction:column;gap:1.5rem;padding:1.5rem;display:flex;box-shadow:0 10px 25px -5px #0000004d}.chat-area{background:var(--card);border-radius:1rem;flex-direction:column;height:700px;display:flex;overflow:hidden;box-shadow:0 10px 25px -5px #0000004d}.messages{flex-direction:column;flex:1;gap:1rem;padding:1.5rem;display:flex;overflow-y:auto}.message{border-radius:.75rem;max-width:85%;padding:1rem;line-height:1.5}.user-msg{background:var(--primary);color:#fff;align-self:flex-end}.ai-msg{color:#e2e8f0;background:#334155;align-self:flex-start}.input-area{background:#1e293b;border-top:1px solid #334155;gap:1rem;padding:1.5rem;display:flex}input,select,textarea{color:#fff;background:#0f172a;border:1px solid #334155;border-radius:.5rem;outline:none;width:100%;padding:.75rem}input:focus{border-color:var(--primary)}button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:.5rem;padding:.75rem 1.5rem;font-weight:600;transition:all .2s}button:hover{filter:brightness(1.2)}.model-tag{opacity:.7;background:#475569;border-radius:4px;margin-right:8px;padding:2px 6px;font-size:.7rem}.status-badge{align-items:center;gap:.5rem;font-size:.875rem;display:flex}.dot{background:#22c55e;border-radius:50%;width:8px;height:8px}