body {
      font-family: 'Poppins', sans-serif;
      background: #f4f9ff;
      margin: 0;
      padding: 0;
    }

    /* Navbar */
    .navbar {
      background-color: #e0f2f1;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 24px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    }

    .navbar .logo {
      font-size: 24px;
      font-weight: bold;
      color: #0d9488;
    }

    .navbar nav a {
      margin: 0 12px;
      text-decoration: none;
      color: #333;
      font-weight: 500;
    }

    .navbar .auth-buttons button {
      margin-left: 10px;
      padding: 6px 12px;
      border-radius: 6px;
      border: 1px solid #ccc;
      cursor: pointer;
      transition: 0.3s ease;
    }

    .navbar .auth-buttons .login {
      background: white;
      color: #0d9488;
    }

    .navbar .auth-buttons .signup {
      background: #0d9488;
      color: white;
    }

    .navbar .auth-buttons .login:hover {
      background: #f0fdfa;
    }

    .navbar .auth-buttons .signup:hover {
      background: #0f766e;
    }

    /* Selector */
    .selector {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 20px;
      padding: 20px;
    }

    .dropdowns {
      display: flex;
      flex-direction: column;
      gap: 15px;
      width: 100%;
      max-width: 400px;
    }

    .dropdowns select {
      padding: 12px;
      font-size: 16px;
      border-radius: 8px;
      border: 1px solid #ccc;
    }

    .compare-container {
      margin-top: 10px;
      text-align: center;
      animation: fadeInUp 0.6s ease;
    }

    #compareBtn {
      background: #14b8a6;
      color: white;
      border: none;
      padding: 12px 28px;
      font-size: 17px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(20, 184, 166, 0.3);
      transition: all 0.3s ease;
    }

    #compareBtn:hover {
      background: #0d9488;
      transform: translateY(-2px) scale(1.03);
      box-shadow: 0 6px 16px rgba(13, 148, 136, 0.4);
    }

    .results {
      max-width: 700px;
      margin: 30px auto;
      padding: 20px;
    }

    .card {
      background: white;
      border-radius: 10px;
      padding: 20px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    p {
      line-height: 1.6;
    }

    .footer {
      background-color: #e0f2f1;
      padding: 20px;
      text-align: center;
      color: #333;
      margin-top: 50px;
    }

    .animate-result {
      animation: slideFadeIn 0.6s ease-out;
      border-left: 6px solid #0d9488;
      border-top: 2px solid #99f6e4;
    }

    @keyframes slideFadeIn {
      from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    /* Dark mode support */
    body.dark-mode {
      background-color: #121212;
      color: #e0e0e0;
    }
    #darkModeToggle{
      background-color: #81bfba;
    }
    body.dark-mode header,
    body.dark-mode .navbar,
    body.dark-mode .footer {
      background-color: #0f766e;
      color: #e0e0e0;
    }

    body.dark-mode .card,
    body.dark-mode .modal-content {
      background-color: #0f766e;
      color: #e0e0e0;
    }

    body.dark-mode select,
    body.dark-mode #compareBtn {
      background-color: #0f766e;
      color: #f8fafc;
    }

    body.dark-mode #compareBtn:hover {
      background-color: #0f766e;
    }

    body, .card, header, .navbar, .footer {
      transition: background-color 0.3s ease, color 0.3s ease;
    }

    #comparison-output {
      font-family: 'Segoe UI', sans-serif;
      background-color: #fdfdfd;
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    }

    .comparison-card {
      background-color: #f0f6ff;
      padding: 16px;
      border: 1px solid #ccc;
      margin-bottom: 20px;
      border-radius: 10px;
    }

    /* 🔄 Responsive Design Adjustments */
@media (max-width: 1024px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }

  .navbar nav {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .navbar nav a {
    padding: 8px 0;
    width: 100%;
    text-align: left;
    margin: 4px 0;
  }

  .navbar .auth-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
  }

  .dropdowns {
    flex-direction: column;
    width: 90%;
    margin: 0 auto;
  }

  .compare-container {
    padding: 0 16px;
  }

  .results {
    width: 95%;
    margin: 20px auto;
    padding: 16px;
  }

  .card {
    padding: 16px;
  }

  #compareBtn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
  }

  .popup-box {
    width: 90%;
    padding: 20px;
  }

  .footer {
    padding: 16px;
    font-size: 14px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .navbar .logo {
    font-size: 20px;
  }

  .popup-box h2 {
    font-size: 18px;
  }

  .popup-box p {
    font-size: 13px;
  }

  .popup-box button {
    font-size: 13px;
    padding: 8px 20px;
  }
}