/* Vertical tab on the left middle */
  .vertical-tab {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-lr;
    background-color: #b38600;
    color: #020617;
    font-weight: 700;
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 14px 10px;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
    user-select: none;
    font-family: "Montserrat", Arial, sans-serif;
    text-decoration: none;
    display: block;
    z-index: 1000;
    white-space: nowrap;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 2px 0 12px rgba(179, 134, 0, 0.3);
  }
  .vertical-tab:hover {
    background-color: #d4a800;
    color: #020617;
    text-decoration: none;
    box-shadow: 2px 0 20px rgba(179, 134, 0, 0.55);
  }

  /* WhatsApp button bottom right */
  .whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25d366; /* WhatsApp green */
    width: 60px;
    height: 60px;
    border-radius: 50%;
    box-shadow: 0 0 15px rgba(37, 211, 102, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: box-shadow 0.3s ease;
    z-index: 1000;
  }
  .whatsapp-btn:hover {
    box-shadow: 0 0 25px rgba(37, 211, 102, 1);
  }
  .whatsapp-btn svg {
    width: 30px;
    height: 30px;
    fill: white;
  }
  .container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.page-title {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.5rem;
  letter-spacing: 1px;
}