.nav-drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1200;
  opacity: 0;
  transition: opacity 0.25s;
}
.nav-drawer-backdrop.open {
  display: block;
  opacity: 1;
}

.nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  z-index: 1300;
  transform: translateX(-100%);
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
  display: flex;
  flex-direction: column;
  padding: 20px 12px;
  overflow-y: auto;
  box-shadow: 4px 0 24px rgba(0,0,0,0.12);
}
.nav-drawer.open {
  transform: translateX(0);
}

.nav-drawer-section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding: 4px 12px 8px;
  margin-top: 8px;
}
.nav-drawer-section-label:first-child { margin-top: 0; }
.nav-drawer-section-label.admin {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.nav-drawer-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition);
}
.nav-drawer-item:hover:not(.disabled) { background: var(--background); }
.nav-drawer-item.disabled { opacity: 0.45; cursor: default; }

.nav-drawer-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 600;
  background: var(--surface-variant);
  color: var(--text-tertiary);
  border-radius: 20px;
  padding: 2px 7px;
}

.nav-drawer-item.active {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-drawer-item.active:hover { background: var(--primary-light); }

.nav-drawer-unread-dot {
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}
