.menu {
  display: flex;
  flex-direction: column;
}

.menu--vertical {
  width: 250px;
  background: var(--color-background, #fff);
  border-right: 1px solid var(--color-border);
  padding: 1rem 0;
}

.menu__section {
  margin-bottom: 1.5rem;
}

.menu__section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
  padding: 0 1.5rem;
}

.menu__links {
  list-style: none;
  margin: 0;
  padding: 0 0.5rem;
}

.menu__item {
  position: relative;
  margin-bottom: 0;
}

.menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  opacity: 1;
  border-radius: var(--border-radius);
  transition: background 0.15s;
}

.menu__link:hover {
  background: var(--color-border);
}

.menu__item--has-children > .menu__link::after {
  content: '›';
  font-size: 1rem;
  opacity: 0.5;
}

.menu__link--active {
  background: var(--color-primary);
  color: var(--color-primary-text, #ffffff);
}

.menu__link--active:hover {
  opacity: 0.85;
}

.menu__submenu {
  position: absolute;
  left: 100%;
  top: 0;
  min-width: 200px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  padding: 0.25rem;
  list-style: none;
  margin: 0;
  display: none;
  z-index: 100;
}

.menu__item:hover > .menu__submenu {
  display: block;
}