/* ==========================================================================
   Sidebar
   ========================================================================== */

.sidebar {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-3);
  overflow-y: auto;
}

.sidebar-brand {
  margin-bottom: var(--space-5);
  padding: 0 var(--space-2);
}

.sidebar-brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.brand-name {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-h3);
  color: var(--color-text-primary);
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-body);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-link:hover {
  background-color: var(--color-surface-secondary);
  color: var(--color-text-primary);
}

.sidebar-link[aria-current="page"] {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary);
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.sidebar-link-label {
  white-space: nowrap;
}

.sidebar-collapse-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-fast);
}

.sidebar-collapse-toggle:hover {
  background-color: var(--color-surface-secondary);
}

.sidebar-collapse-toggle .icon {
  transition: transform var(--transition-fast);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.sidebar-user-name {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: var(--font-size-caption);
  color: var(--color-text-secondary);
}

.sidebar-logout {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sidebar-logout:hover {
  background-color: var(--color-surface-secondary);
  color: var(--color-danger);
}

/* Collapsed state (desktop/tablet) — icons only, driven by js/core/sidebar.js */
.app-shell.is-sidebar-collapsed .sidebar-link-label,
.app-shell.is-sidebar-collapsed .brand-name,
.app-shell.is-sidebar-collapsed .sidebar-user-info {
  display: none;
}

.app-shell.is-sidebar-collapsed .sidebar-link,
.app-shell.is-sidebar-collapsed .sidebar-collapse-toggle,
.app-shell.is-sidebar-collapsed .sidebar-user {
  justify-content: center;
}

.app-shell.is-sidebar-collapsed .sidebar-collapse-toggle .icon {
  transform: rotate(180deg);
}

/* Mobile: off-canvas drawer, slides in/out rather than snapping visibility */
#sidebar-scrim {
  position: fixed;
  inset: 0;
  z-index: 40;
  background-color: rgba(15, 23, 42, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility 0s var(--transition-base);
}

#sidebar-scrim.is-visible {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-base), visibility 0s;
}

@media (max-width: 767px) {
  #sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    width: 280px;
    z-index: 50;
    box-shadow: var(--shadow-md);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--transition-base), visibility 0s var(--transition-base);
  }

  #sidebar.sidebar--open {
    transform: translateX(0);
    visibility: visible;
    transition: transform var(--transition-base), visibility 0s;
  }
}

@media (prefers-reduced-motion: reduce) {
  #sidebar,
  #sidebar-scrim {
    transition: none;
  }
}