body {
      margin: 0;
      background: #000;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      color: #ddd;
    }
    .login-card {
      background: #111;
      padding: 2rem 2.5rem;
      border-radius: 12px;
      width: 350px;
      text-align: center;
      box-shadow: 0 0 25px rgba(0, 255, 0, 0.3);
    }
    .login-card h1 {
      font-size: 1.6rem;
      color: #00ff66;
      margin-bottom: 0.3rem;
      font-weight: bold;
      letter-spacing: 1px;
    }
    .login-card h2 {
      font-size: 0.9rem;
      color: #00cc66;
      margin-bottom: 1.5rem;
      font-weight: normal;
    }
    .login-card input {
      width: 100%;
      padding: 0.8rem;
      margin-bottom: 1rem;
      border: none;
      border-radius: 6px;
      background: #222;
      color: #fff;
      font-size: 0.95rem;
    }
    .login-card input::placeholder {
      color: #aaa;
    }
    .login-card button {
      width: 100%;
      padding: 0.85rem;
      border: none;
      border-radius: 6px;
      background: #00ff66;
      color: #000;
      font-size: 1rem;
      font-weight: bold;
      cursor: pointer;
      transition: background 0.3s, transform 0.1s;
    }
    .login-card button:hover {
      background: #00cc55;
      transform: scale(1.02);
    }
    .login-card .footer {
      margin-top: 1.2rem;
      font-size: 0.85rem;
      color: #777;
    }
    .erro {
      color: #ff4444;
      font-size: 0.9rem;
      margin-top: 0.8rem;
    }