.start-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 80vh;
  padding-top: 40px;
}

.logo {
  margin-bottom: 40px;
}

.logo img {
  max-width: 400px;
  height: auto;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.main-card {
  background: white;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 500px;
}

.main-card h2 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
  font-size: 28px;
}

.main-card h3 {
  text-align: center;
  margin-bottom: 20px;
  color: #555;
  font-size: 20px;
}

.join-section {
  margin-top: 24px;
  padding-top: 24px;
}

.button-group {
  justify-content: center;
}

.button-group .btn {
  flex: 1;
}

@media (max-width: 768px) {
  .start-screen {
    padding-top: 20px;
    min-height: 100vh;
  }

  .logo {
    margin-bottom: 30px;
  }

  .logo img {
    max-width: 280px;
  }

  .main-card {
    padding: 28px;
    max-width: 90%;
    margin: 0 auto;
  }

  .main-card h2 {
    font-size: 24px;
    margin-bottom: 24px;
  }

  .main-card h3 {
    font-size: 18px;
    margin-bottom: 16px;
  }

  .join-section {
    margin-top: 20px;
    padding-top: 20px;
  }

  .button-group {
    flex-direction: column;
    gap: 12px;
  }

  .button-group .btn {
    width: 100%;
  }

  .form-group {
    margin-bottom: 16px;
  }

  .form-group label {
    font-size: 14px;
  }

  .form-group input {
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

@media (max-width: 480px) {
  .start-screen {
    padding-top: 16px;
  }

  .logo {
    margin-bottom: 20px;
  }

  .logo img {
    max-width: 220px;
  }

  .main-card {
    padding: 20px;
    max-width: 95%;
  }

  .main-card h2 {
    font-size: 20px;
    margin-bottom: 20px;
  }

  .main-card h3 {
    font-size: 16px;
    margin-bottom: 14px;
  }

  .form-group input,
  .form-group select {
    padding: 10px;
  }

  .btn {
    padding: 12px 20px;
    font-size: 14px;
  }
}