body {
    font-family: Arial, sans-serif;
    background-color: #292728;
    color: #F5F5F5;
    margin: 0;
    padding: 0;
  }
  
  html {
    scroll-behavior: smooth;
  }
  
  header {
    background-color: #292728;
    color: #D4AF37;
    text-align: center;
    padding: 20px 0;
  }

  header p {
    margin-top: 3rem;
    color: #cccccc;
  }
  
  .logo-img {
    max-width: 120px;
    height: auto;
  }
  
  h1 {
    color: white;
    font-size: 2.5rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 2px 2px 10px rgba(212, 175, 55, 0.7), 0 0 25px rgba(212, 175, 55, 0.5);
    margin-top: 10px;
  }
  
  h2, h3 {
    color: #D4AF37;
  }
  
  .bold {
    font-weight: bold;
  }
  
  .whatsapp-icon {
    position: fixed;
    bottom: 20px;
    right: 15px;
    background-color: #25D366;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #0D0D0D;
    font-size: 38px;
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.5);
    transition: transform 0.3s ease;
    text-decoration: none;
    z-index: 1000;
    animation: bounce 1s infinite alternate;
  }
  
  @keyframes bounce {
    0% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0); }
  }
  
  .container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
  }
  
  article {
    background-color: #1E1E1E;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 5px solid #D4AF37;
    cursor: pointer;
  }
  
  .btn-primary {
    background-color: #D4AF37;
    border: none;
    color: #0D0D0D;
    font-weight: bold;
  }
  
  .btn-primary:hover {
    background-color: #B7952B;
  }
  
  .is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
  }
  
  footer {
    background-color: #292728;
    color: #D4AF37;
    text-align: center;
    padding: 10px 0;
  }
  
  @media (max-width: 768px) {
    header { padding: 10px 0; }
    h1 { font-size: 1.4rem; }
    .logo-img { max-width: 150px; }
  }