wellnua-lite/app/(tabs)/_layout.tsx

import { Tabs } from 'expo-router';
import React from 'react';
import { Platform } from 'react-native';
import { Feather } from '@expo/vector-icons';
import { useSafeAreaInsets } from 'react-native-safe-area-context';

import { HapticTab } from '@/components/haptic-tab';
import { AppColors } from '@/constants/theme';
import { useColorScheme } from '@/hooks/use-color-scheme';

export default function TabLayout() {
  const colorScheme = useColorScheme();
  const isDark = colorScheme === 'dark';
  const insets = useSafeAreaInsets();

  // Calculate tab bar height based on safe area
  // On iOS with home indicator, insets.bottom is ~34px
  // On Android with gesture navigation or software buttons (Samsung/Pixel):
  // - insets.bottom should reflect the navigation bar height
  // - But some devices/modes may return 0, so we add a minimum for Android
  // Android minimum: 16px to ensure content doesn't touch system buttons
  const androidMinPadding = Platform.OS === 'android' ? 16 : 0;
  const bottomPadding = Math.max(insets.bottom, androidMinPadding, 10);
  const tabBarHeight = 60 + bottomPadding; // 60px for content + safe area padding

  return (
    <Tabs
      screenOptions={{
        tabBarActiveTintColor: AppColors.primary,
        tabBarInactiveTintColor: isDark ? '#9BA1A6' : '#687076',
        tabBarStyle: {
          backgroundColor: isDark ? '#151718' : AppColors.background,
          borderTopColor: isDark ? '#2D3135' : AppColors.border,
          height: tabBarHeight,
          paddingBottom: bottomPadding,
          paddingTop: 10,
        },
        tabBarLabelStyle: {
          fontSize: 11,
          fontWeight: '500',
        },
        headerShown: false,
        tabBarButton: HapticTab,
      }}
    >
      <Tabs.Screen
        name="index"
        options={{
          title: 'Dashboard',
          tabBarIcon: ({ color, size }) => (
            <Feather name="grid" size={22} color={color} />
          ),
        }}
      />
      {/* Hide old dashboard - now index shows WebView dashboard */}
      <Tabs.Screen
        name="dashboard"
        options={{
          href: null,
        }}
      />
      {/* Chat with Julia AI */}
      <Tabs.Screen
        name="chat"
        options={{
          title: 'Julia',
          tabBarIcon: ({ color, size }) => (
            <Feather name="message-circle" size={22} color={color} />
          ),
        }}
      />
      <Tabs.Screen
        name="profile"
        options={{
          title: 'Profile',
          tabBarIcon: ({ color, size }) => (
            <Feather name="user" size={22} color={color} />
          ),
        }}
      />
      {/* Hide explore tab */}
      <Tabs.Screen
        name="explore"
        options={{
          href: null,
        }}
      />
      {/* Beneficiaries - hidden from tab bar but keeps tab bar visible */}
      <Tabs.Screen
        name="beneficiaries"
        options={{
          href: null,
        }}
      />
    </Tabs>
  );
}