/* -------------------------------------
  Sidebar (Navigation)
-------------------------------------- */
.sidebar {
  width: 100px;
  background: transparent;
  border-radius: var(--radius);
  padding: var(--spacing-sm);

  border: var(--border-thickness) solid var(--border-color-medium);

  box-shadow:
    var(--shadow-1),
    var(--shadow-2);

  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav-top {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.nav-bottom {
  margin-top: auto;
}

.spacer {
  margin-bottom: var(--spacing-md);
}

.sidebar a {
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;

  color: var(--fg);
  padding: var(--spacing-xs);

  border-radius: var(--radius-lg);

  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.sidebar a .material-icons {
  font-size: var(--size-xxl);
  line-height: 1;
}

.sidebar a .local-icons {
  width: var(--size-xxl);
  height: var(--size-xxl);
  display: block;
}

.sidebar a:hover {
  background: var(--hover-bg);
  transform: translateY(-2px);

  box-shadow: var(--shadow-hover-1), var(--shadow-accent-weak);
}

.sidebar a.active {
  background: var(--hover-bg);
  box-shadow: var(--shadow-accent-medium);
}

@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    padding: var(--spacing-xs) var(--spacing-sm);
    overflow-x: auto;
  }

  .nav-top {
    flex-direction: row;
  }

  .nav-bottom {
    margin-top: 0;
  }

  .sidebar a {
    padding: var(--spacing-xs);
  }

  .nav-home {
    display: none;
  }
}