.video-frame {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 1rem;
  margin-bottom: 2rem;
  box-shadow: 0 0 20px rgba(0,0,0,0.08);
}

.video-frame iframe {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  border: 0;
}

.button {
  display: inline-block;
  margin: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: #fff;
  color: #253a65;
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s;
}

.button:hover {
    background-color: var(--accent-color);
    color: white;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}