*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    background-color: #f3f6f9; /* Light background */
    color: #333;
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  a {
    color: #007acc;
    text-decoration: none;
  }
  a:hover {
    text-decoration: underline;
  }

  /* HEADER*/
  header {
    background-color: #fff;
    border-bottom: 1px solid #e2e2e2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
  }
  /* Left side: logo + brand name */
  .header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  /* LOGO as circle */
  .logo {
    width: auto;
    height: auto;
    max-width: auto;
    max-height: auto;
    object-fit: cover;
  }
  .header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
  .header-right a {
    color: #333;
    font-size: 0.95rem;
  }
  .account-button {
    padding: 0.4rem 0.8rem;
    border: 1px solid #333;
    border-radius: 4px;
    font-weight: 500;
  }


  main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem;
  }

  .checkout-container {
    display: flex;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    max-width: 1000px;
    width: 100%;
    overflow: hidden; /* hide border radius corners if child overflows */
  }

  /* Left (white card) */
  .checkout-left {
    flex: 2;
    padding: 2rem;
  }
  .checkout-left h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  .info-section {
    border-top: 1px solid #eee;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
  }
  .info-section h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  .info-section h3 span {
    font-weight: normal;
    color: #666;
  }

  /* Basic input styling for demonstration */
  .form-group {
    margin-bottom: 1rem;
  }
  label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
  }
  input {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #ccc;
    border-radius: 4px;
  }

  .buy-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.75rem 2rem;
    background-color: #198754; /* green-ish color */
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }
  .buy-button:hover {
    background-color: #166a42;
  }

  /* Right (blue panel) */
  .checkout-right {
    flex: 1;
    background-color: #0b71c8;
    color: #fff;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .plan-price {
    font-size: 2rem;
    margin-bottom: 0.5rem;
  }
  .plan-price small {
    font-size: 1rem;
    font-weight: normal;
  }
  .plan-features {
    margin-top: 1rem;
    list-style: none;
    padding-left: 0;
  }
  .plan-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  .checkout-right a {
    color: #ffeb90; 
    text-decoration: underline;
  }
  .testimonial {
    margin-top: 2rem;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.3);
    padding-top: 1rem;
  }
  .testimonial img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
  }
  .testimonial .author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
  }


  footer {
    text-align: center;
    font-size: 0.85rem;
    color: #666;
    padding: 1rem;
  }

  /* RESPONSIVE (Mobile)*/
  @media (max-width: 768px) {
    .checkout-container {
      flex-direction: column;
    }
    .checkout-right {
      order: -1; 
    }
  }