html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: sans-serif;
  padding: 0;
  box-sizing: border-box;
  height: 100%;
  position: relative; /* Ensures overlay is positioned correctly */
}


body::before {
  content: ""; /* Empty content to apply the background */
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  filter: blur(8px); /* Apply blur effect to the background */
  z-index: -1; /* Put it behind the content */
}

header {
  background: url('images/headerbackground.png') no-repeat center center;
  background-size: cover;
  padding: 1rem;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  z-index: 2; /* Ensure header stays above the sidebar when sidebar is not active */
}

.hamburger {
  width: 30px;
  height: 25px;
  cursor: pointer;
  z-index: 3;
  position: relative;
}

.hamburger span {
  display: block;
  height: 4px;
  background: white;
  margin: 5px 0;
  border-radius: 2px;
}

#sidebar {
  position: fixed;
  top: 0;
  left: -260px;
  width: 250px;
  height: 100%;
  background: url('images/sidebarbackground.png') no-repeat center center;
  background-size: cover;
  color: white;
  padding: 1rem;
  transition: left 0.3s ease;
  z-index: 1; /* Sidebar now has a lower z-index by default */
  box-sizing: border-box;
}

#sidebar.active {
  left: 0;
  z-index: 3; /* Sidebar moves on top of the header when active */
}

#sidebar ul {
  list-style: none;
  padding: 0;
}

#sidebar ul li {
  margin: 1rem 0;
}

#sidebar ul li a {
  color: white;
  text-decoration: none;
}

main {
  padding: 1rem;
  background: url('images/mainbackground.png') no-repeat center center;
  background-size: cover;
  height: calc(100% - 80px);
  z-index: 2; /* Ensures main content stays above the blurred background */
}

/* Overlay that appears behind the sidebar */
#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  display: none;
  z-index: 2; /* Overlay should be below the sidebar */
}

/* Close button inside the sidebar */
.close-btn {
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  float: right;
  margin-bottom: 1rem;
}

.submenu {
  display: none;
  padding-left: 1rem;
}

.expandable > a {
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.arrow {
  transition: transform 0.2s ease;
}

.expandable.open .arrow {
  transform: rotate(90deg);
}

.expandable.open .submenu {
  display: block;
}

.submenu-divider {
  display: none; /* Initially hide the separator */
  border: 0;
  border-top: 1px solid white;
  margin: 1rem 0;
}

.expandable.open .submenu-divider {
  display: block; /* Show the separator when the submenu is expanded */
}

.arrow {
  width: 20px; /* Size of the arrow */
  height: 20px; /* Size of the arrow */
  margin-left: 5px; /* Space between the text and the arrow */
  vertical-align: middle;
}

a {
  color: white;         /* Inherit the color from the parent element */
  text-decoration: none;  /* Remove underline */
}

a:visited {
  color: white;         /* Prevent purple for visited links */
}

a:hover {
  color: blue;         /* Keep hover color unchanged (optional) */
}

a:active {
  color: inherit;         /* Prevent red when active */
}