body {
      background: linear-gradient(135deg, #c9ced4, #88cfe2);
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      font-family: 'Segoe UI', sans-serif;
    }

    .login-card {
      background: #fff;
      padding: 30px;
      border-radius: 15px;
      box-shadow: 0 8px 25px rgba(0,0,0,0.15);
      width: 100%;
      max-width: 400px;
      position: relative;
      animation: fadeIn 0.8s ease-in-out;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(20px); }
      to { opacity: 1; transform: translateY(0); }
    }

    .login-card h2 {
      margin-bottom: 20px;
      text-align: center;
      font-size: 1.9rem;
      color: #333;
    }

    .btn-primary {
      background-color: #007bff;
      border: none;
      font-weight: bold;
      border-radius: 8px;
      transition: all 0.3s;
    }

    .btn-primary:hover {
      background-color: #0056b3;
      transform: scale(1.03);
    }

    .login-card p {
      text-align: center;
      margin-top: 15px;
      font-size: 0.9rem;
    }

    .login-card a {
      text-decoration: none;
      color: #007bff;
    }

    .login-card a:hover {
      text-decoration: underline;
    }

    /* زر الترجمة */
    .lang-switch {
      position: absolute;
      top: -45px;
      right: 0;
    }

    .lang-switch button {
      background: #fff;
      border: 1px solid #ddd;
      border-radius: 20px;
      padding: 5px 15px;
      font-size: 0.9rem;
      cursor: pointer;
      transition: all 0.3s;
    }

    .lang-switch button:hover {
      background: #007bff;
      color: #fff;
      border-color: #007bff;
    }