.login-container{height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#0f172a,#1e293b);font-family:Arial,sans-serif}.login-box{background:#fff;padding:40px;border-radius:14px;width:320px;box-shadow:0 10px 25px #0003;text-align:center}.login-box h2{margin-bottom:25px;color:#1e293b}.input-group{display:flex;flex-direction:column;text-align:left;margin-bottom:18px}.input-group label{font-size:14px;margin-bottom:6px;color:#334155}.input-group input{padding:10px;border-radius:8px;border:1px solid #cbd5e1;font-size:14px;transition:.2s}.input-group input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 5px #3b82f680}.login-box button{width:100%;padding:12px;border-radius:8px;border:none;background:#3b82f6;color:#fff;font-size:16px;cursor:pointer;transition:.2s}.login-box button:hover{background:#2563eb}.error{color:red;margin-top:10px;font-size:14px}body{margin:0;font-family:Arial;background:#f1f5f9}.container{max-width:700px;margin:auto;height:100vh;display:flex;flex-direction:column;background:#fff}.navbar{background:#4f46e5;color:#fff;padding:15px;display:flex;justify-content:space-between}.chat-window{flex:1;overflow:auto;padding:20px;display:flex;flex-direction:column;gap:10px}.msg{padding:10px;border-radius:12px;max-width:70%}.msg.usuario{background:#4f46e5;color:#fff;align-self:flex-end}.msg.ia{background:#e5e7eb}.chat-input{display:flex;padding:10px;border-top:1px solid #ddd}.chat-input input{flex:1;padding:10px}.chat-input button{margin-left:10px}.login{display:flex;flex-direction:column;gap:10px;padding:40px}