/* ════════════════════════════════════════════════════
   SIDEBAR  —  css/sidebar.css
════════════════════════════════════════════════════ */

.app-sidebar {
  background: var(--surface-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: var(--space-3) 0 var(--space-4);
}

/* ── Pin / collapse toggle ────────────── */
.sidebar-pin-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--brand-orange);
  margin-bottom: var(--space-2);
  border-radius: 0;
  transition: opacity var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-pin-btn:hover { opacity: 0.75; }

.sidebar-pin-btn .pin-icon {
  flex-shrink: 0;
  font-size: 14px;
  transition: transform var(--transition-med);
}

.app-sidebar.collapsed .sidebar-pin-btn .pin-label { display: none; }
.app-sidebar.collapsed .sidebar-pin-btn .pin-icon { transform: rotate(45deg); }

/* ── Nav section ──────────────────────── */
.sidebar-nav { flex: 1; overflow-y: auto; padding: 0 var(--space-2); }

/* ── Section group ────────────────────── */
.sidebar-group { margin-bottom: var(--space-1); }

.sidebar-group__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-3) var(--space-3) var(--space-1);
  white-space: nowrap;
  overflow: hidden;
}

.app-sidebar.collapsed .sidebar-group__label { opacity: 0; }

/* ── Nav item ─────────────────────────── */
.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--ink-muted);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  position: relative;
  user-select: none;
}

.sidebar-item:hover {
  background: var(--brand-orange-light);
  color: var(--brand-orange);
}

.sidebar-item.active {
  background: var(--brand-orange-light);
  color: var(--brand-orange);
  font-weight: var(--weight-semibold);
}

.sidebar-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 3px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: var(--brand-orange);
}

.sidebar-item__icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  opacity: 0.8;
}

.sidebar-item.active .sidebar-item__icon { opacity: 1; }

.sidebar-item__label {
  flex: 1;
  transition: opacity var(--transition-med);
}

.app-sidebar.collapsed .sidebar-item__label { opacity: 0; pointer-events: none; }

/* sub-items (indented) */
.sidebar-item--sub {
  padding-left: calc(var(--space-3) + var(--space-6));
  font-size: var(--text-xs);
}

.sidebar-item__caret {
  font-size: 10px;
  color: var(--ink-faint);
  transition: transform var(--transition-fast);
}

.sidebar-item.open .sidebar-item__caret { transform: rotate(90deg); }

.sidebar-sub-list {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-med);
}

.sidebar-sub-list.open { max-height: 400px; }

/* ── Footer ───────────────────────────── */
.sidebar-footer {
  border-top: 1px solid var(--border);
  margin-top: var(--space-2);
  padding: var(--space-3) var(--space-2) 0;
}

/* tooltip for collapsed state */
.app-sidebar.collapsed .sidebar-item {
  justify-content: center;
  padding: var(--space-2);
}

/* ── Tooltip on hover (collapsed) ──────── */
.app-sidebar.collapsed .sidebar-item:hover::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--ink);
  color: #fff;
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  z-index: 200;
  box-shadow: var(--shadow-md);
}