body {
      font-family: 'Inter', 'Segoe UI', sans-serif;
      background-color: #f5f6fa;
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .login-card {
      width: 100%;
      max-width: 400px;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
      padding: 2rem;
      animation: fadeIn 0.4s ease;
    }

    .login-card h4 {
      font-weight: 700;
      color: #0d6efd;
    }

    .form-control {
      border-radius: 8px;
      padding: 10px 12px;
    }

    .btn-login {
      border-radius: 8px;
      font-weight: 600;
      padding: 10px;
    }

    .text-muted a {
      text-decoration: none;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @media (max-width: 576px) {
      .login-card {
        margin: 1rem;
        padding: 1.5rem;
      }
    }