/**
 * Навигация в стиле iOS: navbar + tabbar.
 */

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: calc(var(--space-md) + var(--safe-top)) var(--space-md) var(--space-md);
  background: var(--tg-bg);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.navbar__row {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: var(--tap-min);
  gap: var(--space-sm);
}

.navbar__center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.navbar__top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.navbar__title {
  text-align: center;
  font-size: var(--text-title);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--tg-text);
  line-height: 1.1;
}

.navbar__greeting {
  font-size: var(--text-footnote);
  color: var(--tg-hint);
  line-height: 1.1;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 var(--space-sm);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
  color: var(--tg-text);
  font-size: var(--text-footnote);
  font-weight: 600;
}

.tabbar {
  position: sticky;
  bottom: 0;
  z-index: 10;
  padding: var(--space-sm) var(--space-md) calc(var(--space-sm) + var(--safe-bottom));
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(18px);
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: dark) {
  .navbar {
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }
  .tabbar {
    background: rgba(15, 15, 15, 0.72);
    border-top-color: rgba(255, 255, 255, 0.08);
  }
  .badge {
    background: rgba(255, 255, 255, 0.10);
  }
}

.tabbar__row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.tab {
  min-height: var(--tap-min);
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--tg-hint);
  font-size: var(--text-footnote);
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: var(--space-xs) var(--space-sm);
  transition: background 0.2s, color 0.2s, transform 0.2s, opacity 0.2s;
}

.tab:active {
  transform: scale(0.98);
  opacity: 0.85;
}

.tab[aria-selected="true"] {
  color: var(--tg-text);
  background: rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: dark) {
  .tab[aria-selected="true"] {
    background: rgba(255, 255, 255, 0.10);
  }
}