body {
  margin: 0;
  min-height: 100vh;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: white;
  box-shadow: 0 10px 12px rgba(0, 0, 0, 0.795);
  position: relative;
  z-index: 10;
  gap: 15px;
  background-color: #000000;
}

.logo {
  width: 11em;
  border-radius: 50%;
  margin: 20px;
}

.session-botao {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: top;
  align-items: center;
  overflow: hidden;
  gap: 7em;
}

.session-botao p {
    margin-top: 2em;
    position: relative;
    z-index: 8;
    bottom: 4;
    color: #ffffff;
    font-size: 4.5rem;
    font-family:Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    font-weight: 900;
}

.bg-whatsapp {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  filter: brightness(40%);
  top: 0;
  left: 0;
  z-index: 1;
}

.btn-whatsapp {
  background-color: #10a848;
  display: flex;
  align-items: center;
  gap: 13px;
  justify-content: center;
  color: white;
  text-decoration: none;
  padding: 30px;
  border-radius: 12px;
  font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
  font-size: 38px;
  font-weight: 100;
  transition: background-color 0.3s, transform 0.3s;
  box-shadow: 14px 16px 12px rgba(0, 0, 0, 0.616);
  position: relative;
  z-index: 2;
}

.btn-whatsapp:hover {
  background-color: #1ebe57;
  transform: scale(1.1);
}

.logo-whatsapp {
  width: 2.5em;
  padding-right: 12px;
}

/* --- TABLET --- */
@media (max-width: 768px) {
  .btn-whatsapp {
    font-size: 26px;
    padding: 25px 30px;
    gap: 8px;
  }

  .logo{
    width: 7em;
  }

  .session-botao p {
    font-size: 3.5rem;
  }

  .logo-whatsapp {
    width: 1.8em;
    padding-right: 8px;
  }

  .btn-whatsapp:hover {
    transform: none;
  }
}

/* --- CELULAR --- */
@media (max-width: 580px) {
  header {
    padding: 1px;
  }

  .logo {
    width: 6em;
  }

.session-botao p {
    font-size: 2.5rem;
  }

  .btn-whatsapp{
    font-size: 22px;
    padding: 25px;
    
  }
}