/* ========== TOOL NAVIGATION DROPDOWN ========== */

.nav-dropdown {
  position: relative;
}

.nav-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.nav-dropdown__trigger:hover {
  background: var(--bg-hover);
  border-color: var(--border);
}

/* Keep station-badge styling inside trigger */
.nav-dropdown__trigger .station-badge__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--station-bg);
  border: 1px solid var(--station-border);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.nav-dropdown__trigger .station-badge__label {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* Chevron indicator */
.nav-dropdown__chevron {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.nav-dropdown--open .nav-dropdown__chevron {
  transform: rotate(180deg);
}

/* Dropdown menu */
.nav-dropdown__menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 200;
  overflow: hidden;
}

.nav-dropdown--open .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Menu items */
.nav-dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-sm);
  transition: all var(--transition-fast);
}

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

/* Current/active item */
.nav-dropdown__item--active {
  background: var(--accent-subtle);
  color: var(--accent-bright);
}

.nav-dropdown__item--active:hover {
  background: var(--accent-subtle);
}

/* Station number in dropdown */
.nav-dropdown__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--station-bg);
  border: 1px solid var(--station-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-xs);
  font-weight: 600;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.nav-dropdown__item--active .nav-dropdown__number {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

/* Home icon */
.nav-dropdown__icon {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
}

.nav-dropdown__item:hover .nav-dropdown__icon {
  color: var(--text-primary);
}

/* Divider between home and tools */
.nav-dropdown__divider {
  height: 1px;
  background: var(--border);
  margin: var(--spacing-xs) 0;
}