/* ==========================================================================
   Layout - Bottom Navigation
   하단 탭바 네비게이션
   ========================================================================== */

.bottom-nav {
  position: fixed;
  bottom: max(env(safe-area-inset-bottom), var(--spacing-4));  /* 16px min bottom gap */
  left: 50%;
  transform: translateX(-50%);
  width: 361px;
  max-width: calc(100% - var(--spacing-8));
  height: var(--bottom-nav-height);
  background: var(--color-bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--color-glass-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: var(--z-fixed);
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.bottom-nav-item.active {
  color: var(--color-text-primary);
}

.bottom-nav-item svg {
  width: var(--icon-size-2xl);
  height: var(--icon-size-2xl);
}

.bottom-nav-label {
  font-size: var(--font-size-xs);
  margin-top: 2px;
}

/* Hide bottom nav on desktop (sidebar takes over) */
@media (min-width: 768px) {
  .bottom-nav {
    display: none;
  }
}