/* ========================================
   SIDEBAR STRUCTURE
   ======================================== */

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

/* ========================================
   SIDEBAR LOGO / HEADER
   ======================================== */

.sidebar-header {
  flex-shrink: 0;
  padding: var(--space-lg) var(--space-md);
  border-bottom: var(--border-width) solid var(--color-border);
}

.sidebar-logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-accent-gold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin: 0;
  text-align: center;
}

/* ========================================
   SIDEBAR NAV (scrollable middle)
   ======================================== */

.sidebar-nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-sm) 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.sidebar-nav::-webkit-scrollbar {
  display: none;
}

/* ========================================
   NAV SECTIONS (collapsible groups)
   ======================================== */

.nav-section {
  margin-bottom: var(--space-xs);
}

/* Section header - clickable to toggle */
.nav-section-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

.nav-section-header:hover {
  color: var(--color-text-secondary);
}

/* Chevron indicator */
.nav-section-chevron {
  font-size: var(--text-xs);
  transition: transform var(--transition-normal);
}

.nav-section.collapsed .nav-section-chevron {
  transform: rotate(-90deg);
}

/* Section items container */
.nav-section-items {
  overflow: hidden;
  transition: max-height var(--transition-slide);
  max-height: 50vh;
}

.nav-section.collapsed .nav-section-items {
  max-height: 0;
}

/* ========================================
   NAV ITEMS
   ======================================== */

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  padding-left: var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
  border-left: calc(var(--vw) * 0.15) solid transparent;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.nav-item:hover {
  background: var(--panel-bg-hover);
  color: var(--color-text-primary);
}

.nav-item.active {
  color: var(--color-accent-gold);
  border-left-color: var(--color-accent-gold);
  background: rgba(64, 200, 200, 0.15);
}

/* Update indicator dot */
.nav-item-indicator {
  width: calc(var(--vw) * 0.4);
  height: calc(var(--vw) * 0.4);
  border-radius: 50%;
  background: var(--color-accent-gold);
  margin-left: auto;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.nav-item.has-update .nav-item-indicator {
  opacity: 1;
}

/* ========================================
   SIDEBAR FOOTER (user info)
   ======================================== */

.sidebar-footer {
  flex-shrink: 0;
  padding: var(--space-md);
  border-top: var(--border-width) solid var(--color-border);
  background: var(--color-bg-dark);
}

.sidebar-user {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.sidebar-user-email {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.sidebar-logout-btn {
  flex-shrink: 0;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  background: transparent;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.sidebar-logout-btn:hover {
  border-color: var(--color-accent-gold);
  color: var(--color-accent-gold);
}