body {
  font-family: Arial, sans-serif;
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #f4f4f4;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #333;
  padding: 10px 20px;
  color: white;
}

header img {
  height: 60px;
  border-radius: 50%;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

nav ul li {
  position: relative;
  margin: 0 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  padding: 8px;
}

nav ul li:hover > a {
  background-color: #444;
  border-radius: 4px;
}

.contact-btn {
  background-color: #ff6600;
  color: white;
  padding: 8px 15px;
  border-radius: 4px;
  text-decoration: none;
  margin-left: 20px;
}

.contact-btn:hover {
  background-color: #e65c00;
}

.content {
  flex: 1;
  display: flex;
  overflow: hidden; /* prevents layout overflow */
}

.main-video {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  background: #fff;
  padding: 20px;
}

.main-video h2 {
  margin-bottom: 15px;
  font-size: 20px;
  color: #333;
}

.main-video video {
  width: 80%;
  max-height: 80%;
  border: 2px solid #ccc;
  border-radius: 8px;
}

.sidebar {
  width: 250px;
  background: #eee;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;       /* enables vertical scrollbar */
  max-height: 100vh;      /* keeps sidebar within screen height */
}

.sidebar video {
  width: 100%;
  border: 2px solid #ccc;
  border-radius: 6px;
  cursor: pointer;
}

.sidebar video:hover {
  border-color: #ff6600;
}

.not-available {
  padding: 10px;
  background: #ccc;
  text-align: center;
  border-radius: 6px;
  font-size: 14px;
  color: #333;
}