* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #e6fff8, #ffdab9, #f5d2d3);
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
  }
  
  /* Flex container for side-by-side layout */
  .container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 1200px;
  }
  
  /* BMI Calculator */
  .bmi-section {
    background: rgba(255, 255, 255, 0.9);
    max-width: 500px;
    width: 100%;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
  }
  
  .bmi-section h2 {
    font-size: 2rem;
    color: #a47e8c;
    margin-bottom: 25px;
  }
  
  .input-group {
    margin-bottom: 20px;
    text-align: left;
  }
  
  .input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #666;
  }
  
  .input-group input,
  .input-group select {
    width: 100%;
    padding: 10px;
    border: 2px solid #ccc;
    border-radius: 10px;
    font-size: 1rem;
    margin-top: 5px;
    transition: border 0.3s ease;
  }
  
  .input-group input:focus,
  .input-group select:focus {
    border-color: #a47e8c;
    outline: none;
  }
  
  button {
    padding: 12px 25px;
    font-size: 1rem;
    background-color: #a47e8c;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 10px;
  }
  
  button:hover {
    background-color: #8e6d79;
  }
  
  #bmi-result {
    margin-top: 25px;
    font-size: 1.2rem;
    color: #444;
    font-weight: 500;
  }
  
  /* BMI Category Styling */
  .category {
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 6px;
  }
  
  .category.underweight {
    color: #3366cc;
  }
  
  .category.healthy {
    color: #2e8b57;
  }
  
  .category.overweight {
    color: #ff9933;
  }
  
  .category.obesity {
    color: #cc0000;
  }
  
  /* BMI Index Panel */
  .bmi-index {
    background: rgba(255, 255, 255, 0.9);
    padding: 30px 25px;
    border-radius: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
  }
  
  .bmi-index h2 {
    font-size: 1.8rem;
    color: #a47e8c;
    margin-bottom: 20px;
    text-align: center;
  }
  
  .bmi-index table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
  }
  
  .bmi-index th,
  .bmi-index td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
  }
  
  .bmi-index th {
    background-color: #f9f3f5;
    color: #555;
  }
  
  .bmi-index td {
    background-color: #fff;
    color: #333;
  }