.btn-voltar {
  position: absolute;
  top: 100px;
  left: 70px;
  z-index: 1000;
  width: 100px;
  height: 45px;
  border-radius: 30px;
  background-color: var(--btn-back-border);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  text-decoration: none;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition:
    background-color 0.3s,
    transform 0.2s;
}
.btn-voltar:hover {
  background-color: var(--btn-hover);
  transform: scale(1.1);
}

@media (max-width: 992px) {
  .projeto-container {
    padding: 0 1rem;
  }
}

@media (max-width: 768px) {
  .btn-voltar {
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    max-width: 260px;
    margin-bottom: 1.5rem;
  }

  .projeto-info,
  .projeto-video {
    width: 100%;
  }

  .projeto-video {
    margin-top: 1.5rem;
  }

  .projeto-video video,
  .projeto-video img {
    max-height: 60vh;
  }
}