/* Background for the whole welcome page */
#welcome-section {
    background-color: #f9effc; 
    min-height: calc(100vh - 120px);
    padding: 5rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
  }
  
  /* Decorative floating envelope */
  .decorative-envelope {
    width: 4rem;
    position: absolute;
    top: -2%;
    left: -2%;
    animation: float 2s ease-in-out infinite;
    z-index: 2;
    transform: rotate(-15deg);
  }
  
  /* Welcome message box */
  .intro-box {
    position: relative;
    max-width: 40rem;
    background-color: #18ceb3; 
    padding: 2rem 2rem;
    border-radius: 3rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    font-family: 'Avenir', Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.8;
    color: #0b0101;
    text-align: left;
    background-image: url('https://www.transparenttextures.com/patterns/paper-fibers.png'); 
  }
  
  .intro-box p {
    margin-bottom: 0.5rem;
  }
  
  .intro-box em {
    font-style: italic;
    color: #222; 
    font-weight: 500;
  }
  
  .intro-box strong {
    color: #1b1b1b;
    font-weight: 600;
  }
  
  .intro-box .closing {
    margin-top: 2.5rem;
    font-size: 1.1rem;
  }
  
  @keyframes float {
    0% { transform: translateY(0) rotate(-15deg); }
    50% { transform: translateY(-6px) rotate(-15deg); }
    100% { transform: translateY(0) rotate(-15deg); }
  }