.completed-projects {
  max-width: 1200px;
  margin: auto;
  padding: 20px;
}
.section-title {
  text-align: center;
  font-size: 2em;
  margin-bottom: 20px;
  color: #333;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.video-item {
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}
.video-item iframe {
  width: 100%;
  height: 200px;
  border: none;
}
.video-title {
  padding: 10px;
  font-size: 1.1em;
  color: #555;
  text-align: center;
}