/* Collapsed sidebar */
.sidebar {
  width: 60px;
  transition: 0.3s ease;
  overflow-x: hidden;
  flex-direction: column;
  height: 100vh;
  background: var(--color-primary);
  position: fixed;
  box-shadow: 2px 0 12px rgba(0, 0, 0, 0.2);
  z-index: 999;
}

.sidebar-menu-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  background: none;
  border: none;
  color: var(--color-white);
  padding: 0.5rem 1rem;
  cursor: pointer;
  text-align: left;
  position: relative;
  text-decoration: none;
}

.sidebar-menu-button .label {
  opacity: 0;
  width: 0;
  overflow: hidden;
  transition: opacity 0.3s ease, width 0.3s ease, margin 0.3s ease;
  font-size: 1rem;
}

.sidebar-menu-button:hover {
  color: var(--color-on-primary);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 0.2rem;
}

.sidebar-brand {
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--color-white);
  text-decoration: none;
  opacity: 0; /* hidden collapsed */
  transition: opacity 0.3s ease;
}

/* Expanded sidebar on hover */
.sidebar:hover {
  width: 220px;
  opacity: 0.9;
}

.sidebar:hover .sidebar-brand {
  opacity: 1;
}

.sidebar:hover .sidebar-menu-button .label {
  opacity: 1;
  width: auto;
  margin-left: 0.5rem;
}

/* Submenu that expands when JS toggles 'open' class */
.sidebar-menu-button .caret {
  margin-left: auto;
  transition: transform 0.3s ease;
}

.sidebar-menu-button .caret.rotate {
  transform: rotate(180deg);
}

.sidebar-submenu {
  display: flex;
  flex-direction: column;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.sidebar-submenu.open {
  max-height: 500px;
}

.sidebar-submenu a {
  color: var(--color-white);
  display: block;
  font-size: 0.9rem;
  font-weight: normal;
  padding: 0.25rem 0;
  padding-left: 2rem;
  text-decoration: none;
  transition: background 0.2s ease;
}

.sidebar-submenu a:hover {
  background: var(--color-primary-dark);
}

/* Hide submenu when sidebar is collapsed */
.sidebar:not(:hover) .sidebar-submenu {
  max-height: 0 !important;
  overflow: hidden;
}

/* Keep submenu open only when sidebar is expanded */
.sidebar:hover .sidebar-submenu.open {
  max-height: 500px;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.sidebar-logout-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  margin-top: auto;
  text-decoration: none;
  color: var(--color-white);
}

.sidebar:hover .sidebar-logout-link {
  justify-content: flex-start;
}