body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

header {
  display: flex;
  justify-content: flex-end;
  padding: 0;
}

header img {
  width: 25%;
  height: auto;
  display: block;
}

.main-container {
  display: flex;
  flex: 1;
}

.sidebar {
  background-color: #ffffff;
  padding: 1em;
  width: 200px;
  flex-shrink: 0;
}

.sidebar a {
  color: #000000;
  text-decoration: none;
  display: block;
  padding: 8px 0;
  transition: all 0.3s ease;
}

.sidebar a:hover {
  color: #0077b6;
  background-color: #f0f8ff;
  padding-left: 10px;
}

.sidebar a:focus-visible {
  outline: 2px solid #0077b6;
  outline-offset: 2px;
  background-color: #f0f8ff;
}

.sidebar li {
  color: #000000;
  margin-bottom: 5px;
  list-style-type: none;
  border-bottom: 1px solid #eeeeee;
}

.sidebar li:hover {
  background-color: #f5f5f5;
}

main {
  flex: 1;
  display: flex;
}

.content {
  flex: 1;
  padding: 2em;
}

iframe {
  width: 100%;
  height: auto;
  min-height: 60vh;
  border: none;
  display: block;
  overflow: hidden;
    
}

.menu-highlight {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.2px;
}

footer {
  background: #0077b6;
  color: white;
  text-align: center; 
  padding: 1em 0;
  width: 100%;
  font-size: 0.9em;
  margin-top: auto;
}

img,
iframe {
  max-width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  header {
    flex-wrap: wrap;
  }

  header img {
    width: 100%;
  }

  header img:not(:first-child) {
    display: none;
  }

  .main-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    padding: 1em 1.25em;
    border-bottom: 1px solid #eeeeee;
  }

  .content {
    padding: 1em;
  }

  iframe {
    min-height: 60vh;
  }
}