Refactor frontend-mobile

apps/frontend-mobile/app/(tabs)/_layout.tsx

@@ -1,14 +1,40 @@
 import { Tabs } from 'expo-router';
 import { Ionicons } from '@expo/vector-icons';
+import { View, StyleSheet, Platform } from 'react-native';
+import { colors, shadows } from '../../constants/theme';
+
+function ScanIcon({ color, size }: { color: string; size: number }) {
+  return (
+    <View style={styles.fabContainer}>
+      <View style={[styles.fab, shadows.scanButton]}>
+        <Ionicons name="scan" size={size} color="#ffffff" />
+      </View>
+    </View>
+  );
+}
 
 export default function TabLayout() {
   return (
     <Tabs
       screenOptions={{
-        tabBarActiveTintColor: '#007AFF',
+        tabBarActiveTintColor: colors.primary,
-        tabBarInactiveTintColor: '#8E8E93',
+        tabBarInactiveTintColor: colors.textSecondary,
+        tabBarStyle: styles.tabBar,
+        tabBarLabelStyle: styles.tabBarLabel,
+        headerStyle: styles.header,
+        headerTintColor: colors.primary,
+        headerTitleStyle: styles.headerTitle,
       }}
     >
+      <Tabs.Screen
+        name="home"
+        options={{
+          title: 'Inicio',
+          tabBarIcon: ({ color, size }) => (
+            <Ionicons name="home" size={size} color={color} />
+          ),
+        }}
+      />
       <Tabs.Screen
         name="index"
         options={{
@@ -18,13 +44,27 @@ export default function TabLayout() {
           ),
         }}
       />
+      <Tabs.Screen
+        name="scan"
+        options={{
+          title: 'Escanear',
+          tabBarIcon: ({ color, size }) => <ScanIcon color={color} size={size} />,
+          tabBarLabel: () => null,
+        }}
+      />
+      <Tabs.Screen
+        name="alerts"
+        options={{
+          title: 'Avisos',
+          tabBarIcon: ({ color, size }) => (
+            <Ionicons name="notifications" size={size} color={color} />
+          ),
+        }}
+      />
       <Tabs.Screen
         name="map"
         options={{
-          title: 'Mapa',
+          href: null,
-          tabBarIcon: ({ color, size }) => (
-            <Ionicons name="map" size={size} color={color} />
-          ),
         }}
       />
       <Tabs.Screen
@@ -39,3 +79,43 @@ export default function TabLayout() {
     </Tabs>
   );
 }
+
+const styles = StyleSheet.create({
+  tabBar: {
+    backgroundColor: colors.card,
+    borderTopColor: colors.border,
+    height: Platform.OS === 'ios' ? 88 : 64,
+    paddingBottom: Platform.OS === 'ios' ? 24 : 8,
+    paddingTop: 8,
+  },
+  tabBarLabel: {
+    fontSize: 11,
+    fontWeight: '500',
+  },
+  header: {
+    backgroundColor: colors.card,
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 1 },
+    shadowOpacity: 0.05,
+    shadowRadius: 4,
+    elevation: 1,
+  },
+  headerTitle: {
+    color: colors.text,
+    fontWeight: '600',
+    fontSize: 17,
+  },
+  fabContainer: {
+    position: 'absolute',
+    top: -16,
+    alignItems: 'center',
+  },
+  fab: {
+    width: 52,
+    height: 52,
+    borderRadius: 26,
+    backgroundColor: colors.scanButton,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+});

apps/frontend-mobile/app/(tabs)/alerts.tsx

@@ -0,0 +1,284 @@
+import React, { useEffect, useState } from 'react';
+import { View, Text, StyleSheet, FlatList, TouchableOpacity, Alert } from 'react-native';
+import { Ionicons } from '@expo/vector-icons';
+import { colors, spacing, borderRadius, shadows } from '../../constants/theme';
+import { LoadingSpinner } from '../../components/LoadingSpinner';
+
+interface NotificationItem {
+  scope: string;
+  id: number;
+  medicine_name?: string;
+  medicine_nregistro?: string;
+  pharmacy_name?: string;
+  pharmacy_id?: number;
+  pharmacy_address?: string;
+  created_at?: string;
+}
+
+export default function AlertsScreen() {
+  const [items, setItems] = useState<NotificationItem[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [deletingId, setDeletingId] = useState<string | null>(null);
+
+  useEffect(() => {
+    loadNotifications();
+  }, []);
+
+  async function loadNotifications() {
+    setIsLoading(true);
+    setError(null);
+    try {
+      const res = await fetch('/api/notifications/mine', { credentials: 'include' });
+      if (!res.ok) throw new Error(`HTTP ${res.status}`);
+      const data = await res.json();
+      const merged = [
+        ...(data.pharmacy || []),
+        ...(data.global || []),
+      ].sort((a: NotificationItem, b: NotificationItem) =>
+        (b.created_at || '').localeCompare(a.created_at || '')
+      );
+      setItems(merged);
+    } catch (err: any) {
+      setError(err.message || 'No se pudieron cargar las notificaciones');
+    } finally {
+      setIsLoading(false);
+    }
+  }
+
+  async function handleDelete(item: NotificationItem) {
+    const key = `${item.scope}:${item.id}`;
+    Alert.alert(
+      'Eliminar notificación',
+      `¿Eliminar la notificación de ${item.medicine_name || item.medicine_nregistro}?`,
+      [
+        { text: 'Cancelar', style: 'cancel' },
+        {
+          text: 'Eliminar',
+          style: 'destructive',
+          onPress: async () => {
+            setDeletingId(key);
+            try {
+              const res = await fetch('/api/notifications/mine', {
+                method: 'DELETE',
+                headers: { 'Content-Type': 'application/json' },
+                credentials: 'include',
+                body: JSON.stringify({ scope: item.scope, id: item.id }),
+              });
+              if (!res.ok && res.status !== 204) throw new Error(`HTTP ${res.status}`);
+              setItems(prev => prev.filter(i => !(i.scope === item.scope && i.id === item.id)));
+            } catch (err: any) {
+              Alert.alert('Error', err.message || 'No se pudo eliminar');
+            } finally {
+              setDeletingId(null);
+            }
+          },
+        },
+      ]
+    );
+  }
+
+  function renderItem({ item }: { item: NotificationItem }) {
+    const key = `${item.scope}:${item.id}`;
+    return (
+      <View style={styles.item}>
+        <View style={styles.itemContent}>
+          <Text style={styles.itemName} numberOfLines={2}>
+            {item.medicine_name || item.medicine_nregistro}
+          </Text>
+          <View style={styles.itemMeta}>
+            <View style={styles.chip}>
+              <Ionicons
+                name={item.scope === 'pharmacy' ? 'medical' : 'globe'}
+                size={12}
+                color={colors.primary}
+              />
+              <Text style={styles.chipText}>
+                {item.scope === 'pharmacy'
+                  ? item.pharmacy_name || `Farmacia #${item.pharmacy_id}`
+                  : 'Cualquier farmacia'}
+              </Text>
+            </View>
+            {item.pharmacy_address && (
+              <Text style={styles.itemAddress} numberOfLines={1}>
+                {item.pharmacy_address}
+              </Text>
+            )}
+          </View>
+        </View>
+        <TouchableOpacity
+          style={styles.deleteButton}
+          onPress={() => handleDelete(item)}
+          disabled={deletingId === key}
+        >
+          {deletingId === key ? (
+            <Ionicons name="hourglass" size={18} color={colors.danger} />
+          ) : (
+            <Ionicons name="trash-outline" size={18} color={colors.danger} />
+          )}
+        </TouchableOpacity>
+      </View>
+    );
+  }
+
+  if (isLoading) {
+    return <LoadingSpinner message="Cargando notificaciones..." />;
+  }
+
+  return (
+    <View style={styles.container}>
+      <View style={styles.header}>
+        <Text style={styles.title}>Notificaciones Guardadas</Text>
+        <Text style={styles.subtitle}>
+          Recibe avisos cuando medicamentos sin stock se repongan
+        </Text>
+      </View>
+
+      {error && (
+        <View style={styles.errorContainer}>
+          <Text style={styles.errorText}>{error}</Text>
+          <TouchableOpacity onPress={loadNotifications} style={styles.retryButton}>
+            <Text style={styles.retryText}>Reintentar</Text>
+          </TouchableOpacity>
+        </View>
+      )}
+
+      {!error && items.length === 0 && (
+        <View style={styles.emptyContainer}>
+          <Ionicons name="notifications-off-outline" size={64} color={colors.border} />
+          <Text style={styles.emptyTitle}>Sin notificaciones</Text>
+          <Text style={styles.emptyText}>
+            Toca la campana en una farmacia sin stock para recibir notificaciones cuando se reponga.
+          </Text>
+        </View>
+      )}
+
+      {!error && items.length > 0 && (
+        <FlatList
+          data={items}
+          keyExtractor={(item) => `${item.scope}:${item.id}`}
+          renderItem={renderItem}
+          contentContainerStyle={styles.list}
+          showsVerticalScrollIndicator={false}
+        />
+      )}
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: colors.background,
+  },
+  header: {
+    paddingHorizontal: spacing.lg,
+    paddingTop: spacing.lg,
+    paddingBottom: spacing.md,
+  },
+  title: {
+    fontSize: 22,
+    fontWeight: 'bold',
+    color: colors.text,
+  },
+  subtitle: {
+    fontSize: 14,
+    color: colors.textSecondary,
+    marginTop: spacing.xs,
+    lineHeight: 20,
+  },
+  list: {
+    paddingHorizontal: spacing.lg,
+    paddingBottom: spacing.xl,
+    gap: spacing.sm,
+  },
+  item: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    backgroundColor: colors.card,
+    borderRadius: borderRadius.lg,
+    padding: spacing.md,
+    ...shadows.card,
+  },
+  itemContent: {
+    flex: 1,
+    gap: spacing.xs,
+  },
+  itemName: {
+    fontSize: 16,
+    fontWeight: '600',
+    color: colors.text,
+    lineHeight: 22,
+  },
+  itemMeta: {
+    gap: spacing.xs,
+  },
+  chip: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: spacing.xs,
+    backgroundColor: colors.primaryContainer,
+    borderRadius: borderRadius.full,
+    paddingHorizontal: spacing.sm,
+    paddingVertical: 3,
+    alignSelf: 'flex-start',
+  },
+  chipText: {
+    fontSize: 12,
+    fontWeight: '600',
+    color: colors.onPrimaryContainer,
+  },
+  itemAddress: {
+    fontSize: 12,
+    color: colors.textSecondary,
+  },
+  deleteButton: {
+    width: 36,
+    height: 36,
+    borderRadius: 18,
+    backgroundColor: colors.dangerContainer,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginLeft: spacing.sm,
+  },
+  errorContainer: {
+    margin: spacing.lg,
+    padding: spacing.md,
+    backgroundColor: colors.dangerContainer,
+    borderRadius: borderRadius.lg,
+    alignItems: 'center',
+    gap: spacing.sm,
+  },
+  errorText: {
+    fontSize: 14,
+    color: colors.danger,
+    textAlign: 'center',
+  },
+  retryButton: {
+    paddingHorizontal: spacing.md,
+    paddingVertical: spacing.xs,
+  },
+  retryText: {
+    fontSize: 14,
+    fontWeight: '600',
+    color: colors.primary,
+  },
+  emptyContainer: {
+    flex: 1,
+    alignItems: 'center',
+    justifyContent: 'center',
+    paddingHorizontal: spacing.xl,
+    gap: spacing.md,
+  },
+  emptyTitle: {
+    fontSize: 18,
+    fontWeight: '600',
+    color: colors.text,
+  },
+  emptyText: {
+    fontSize: 14,
+    color: colors.textSecondary,
+    textAlign: 'center',
+    lineHeight: 20,
+  },
+});

apps/frontend-mobile/app/(tabs)/home.tsx

@@ -0,0 +1,137 @@
+import React from 'react';
+import { View, Text, StyleSheet, TouchableOpacity, Image } from 'react-native';
+import { Ionicons } from '@expo/vector-icons';
+import { useRouter } from 'expo-router';
+import { colors, spacing, borderRadius, shadows } from '../../constants/theme';
+
+export default function HomeScreen() {
+  const router = useRouter();
+
+  return (
+    <View style={styles.container}>
+      <View style={styles.hero}>
+        <Image
+          source={require('../../assets/farmaclic_logo.png')}
+          style={styles.logo}
+          resizeMode="contain"
+        />
+        <Text style={styles.brandName}>FarmaClic</Text>
+        <Text style={styles.description}>
+          Encuentra tus medicamentos en farmacias cercanas
+        </Text>
+      </View>
+
+      <View style={styles.cards}>
+        <TouchableOpacity
+          style={styles.card}
+          activeOpacity={0.85}
+          onPress={() => router.push('/(tabs)')}
+        >
+          <View style={[styles.cardIcon, styles.cardIconSearch]}>
+            <Ionicons name="search" size={24} color={colors.onPrimaryContainer} />
+          </View>
+          <View style={styles.cardContent}>
+            <Text style={styles.cardLabel}>Buscar Medicamento</Text>
+            <Ionicons name="chevron-forward" size={20} color={colors.onPrimaryContainer} style={{ opacity: 0.7 }} />
+          </View>
+        </TouchableOpacity>
+
+        <TouchableOpacity
+          style={[styles.card, styles.cardScan]}
+          activeOpacity={0.85}
+          onPress={() => router.push('/scanner')}
+        >
+          <View style={[styles.cardIcon, styles.cardIconScan]}>
+            <Ionicons name="scan" size={24} color="#ffffff" />
+          </View>
+          <View style={styles.cardContent}>
+            <Text style={[styles.cardLabel, styles.cardLabelScan]}>Escanear TSI</Text>
+            <Ionicons name="chevron-forward" size={20} color="#ffffff" style={{ opacity: 0.7 }} />
+          </View>
+        </TouchableOpacity>
+      </View>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: colors.background,
+    alignItems: 'center',
+    justifyContent: 'center',
+    paddingHorizontal: spacing.lg,
+    gap: spacing.lg,
+  },
+  hero: {
+    alignItems: 'center',
+    gap: spacing.sm,
+    marginBottom: spacing.md,
+  },
+  logo: {
+    width: 120,
+    height: 120,
+    marginBottom: spacing.xs,
+  },
+  brandName: {
+    fontSize: 28,
+    fontWeight: 'bold',
+    color: colors.text,
+    letterSpacing: -0.5,
+  },
+  description: {
+    fontSize: 16,
+    color: colors.textSecondary,
+    textAlign: 'center',
+    maxWidth: 260,
+    lineHeight: 24,
+  },
+  cards: {
+    width: '100%',
+    maxWidth: 320,
+    gap: spacing.md,
+  },
+  card: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: spacing.md,
+    backgroundColor: colors.primaryContainer,
+    borderRadius: borderRadius.lg,
+    padding: spacing.md,
+    minHeight: 64,
+    ...shadows.card,
+  },
+  cardScan: {
+    backgroundColor: colors.scanButton,
+  },
+  cardIcon: {
+    width: 48,
+    height: 48,
+    borderRadius: borderRadius.md,
+    backgroundColor: 'rgba(255, 255, 255, 0.2)',
+    alignItems: 'center',
+    justifyContent: 'center',
+    flexShrink: 0,
+  },
+  cardIconSearch: {
+    backgroundColor: 'rgba(255, 255, 255, 0.3)',
+  },
+  cardIconScan: {
+    backgroundColor: 'rgba(255, 255, 255, 0.2)',
+  },
+  cardContent: {
+    flex: 1,
+    flexDirection: 'row',
+    alignItems: 'center',
+    justifyContent: 'space-between',
+  },
+  cardLabel: {
+    fontSize: 18,
+    fontWeight: '700',
+    color: colors.onPrimaryContainer,
+    lineHeight: 24,
+  },
+  cardLabelScan: {
+    color: '#ffffff',
+  },
+});

apps/frontend-mobile/app/(tabs)/index.tsx

@@ -59,7 +59,7 @@ export default function HomeScreen() {
           style={styles.scannerButton}
           onPress={() => router.push('/scanner')}
         >
-          <Ionicons name="scan" size={24} color={colors.primary} />
+          <Ionicons name="scan" size={22} color="#ffffff" />
         </TouchableOpacity>
       </View>
       
@@ -96,25 +96,34 @@ const styles = StyleSheet.create({
   searchContainer: {
     flexDirection: 'row',
     alignItems: 'center',
+    paddingRight: spacing.lg,
   },
   scannerButton: {
-    marginRight: spacing.md,
+    width: 44,
-    padding: spacing.sm,
+    height: 44,
-    backgroundColor: colors.card,
+    borderRadius: 22,
-    borderRadius: borderRadius.md,
+    backgroundColor: colors.scanButton,
+    alignItems: 'center',
+    justifyContent: 'center',
+    shadowColor: '#2b5bb5',
+    shadowOffset: { width: 0, height: 4 },
+    shadowOpacity: 0.3,
+    shadowRadius: 12,
+    elevation: 6,
   },
   list: {
     paddingBottom: spacing.xl,
   },
   errorContainer: {
     padding: spacing.md,
-    marginHorizontal: spacing.md,
+    marginHorizontal: spacing.lg,
-    backgroundColor: '#F8D7DA',
+    backgroundColor: colors.dangerContainer,
-    borderRadius: 8,
+    borderRadius: borderRadius.lg,
   },
   errorText: {
-    color: '#721C24',
+    color: colors.danger,
     textAlign: 'center',
+    fontSize: 14,
   },
   emptyContainer: {
     padding: spacing.xl,

apps/frontend-mobile/app/(tabs)/map.tsx

@@ -92,14 +92,14 @@ const styles = StyleSheet.create({
     left: spacing.md,
     right: spacing.md,
     backgroundColor: colors.card,
-    borderRadius: 8,
+    borderRadius: borderRadius.lg,
-    padding: spacing.sm,
+    padding: spacing.sm + 4,
     alignItems: 'center',
     shadowColor: '#000',
-    shadowOffset: { width: 0, height: 2 },
+    shadowOffset: { width: 0, height: 4 },
-    shadowOpacity: 0.25,
+    shadowOpacity: 0.08,
-    shadowRadius: 4,
+    shadowRadius: 20,
-    elevation: 5,
+    elevation: 4,
   },
   legendText: {
     fontSize: 14,

apps/frontend-mobile/app/(tabs)/profile.tsx

@@ -830,7 +830,7 @@ const styles = StyleSheet.create({
     width: 100,
     height: 100,
     borderRadius: 50,
-    backgroundColor: colors.background,
+    backgroundColor: colors.primaryContainer,
     justifyContent: 'center',
     alignItems: 'center',
     overflow: 'hidden',
@@ -846,7 +846,7 @@ const styles = StyleSheet.create({
     left: 0,
     right: 0,
     bottom: 0,
-    backgroundColor: 'rgba(0, 0, 0, 0.5)',
+    backgroundColor: 'rgba(0, 0, 0, 0.4)',
     justifyContent: 'center',
     alignItems: 'center',
     opacity: 0.8,
@@ -857,17 +857,17 @@ const styles = StyleSheet.create({
     fontSize: 14,
   },
   infoSection: {
-    padding: spacing.xl,
+    padding: spacing.lg,
     backgroundColor: colors.card,
-    marginTop: spacing.md,
+    marginTop: spacing.sm,
     gap: spacing.md,
   },
   infoCard: {
-    backgroundColor: colors.background,
+    backgroundColor: colors.surfaceLow,
     padding: spacing.md,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     borderWidth: 1,
-    borderColor: colors.border || '#E0E0E0',
+    borderColor: colors.border,
   },
   infoLabel: {
     fontSize: 12,
@@ -883,7 +883,7 @@ const styles = StyleSheet.create({
     color: colors.text,
   },
   menuSection: {
-    marginTop: spacing.md,
+    marginTop: spacing.sm,
     backgroundColor: colors.card,
   },
   menuItem: {
@@ -891,7 +891,7 @@ const styles = StyleSheet.create({
     alignItems: 'center',
     padding: spacing.md,
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   menuText: {
     flex: 1,
@@ -901,9 +901,9 @@ const styles = StyleSheet.create({
   },
   searchHistorySection: {
     padding: spacing.md,
-    backgroundColor: colors.background,
+    backgroundColor: colors.surfaceLow,
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   searchHistoryTitle: {
     fontSize: 14,
@@ -916,7 +916,7 @@ const styles = StyleSheet.create({
     justifyContent: 'space-between',
     paddingVertical: spacing.sm,
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   searchAddress: {
     flex: 1,
@@ -928,7 +928,7 @@ const styles = StyleSheet.create({
   },
   button: {
     backgroundColor: colors.primary,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     paddingVertical: spacing.md,
     paddingHorizontal: spacing.xl,
   },
@@ -951,7 +951,7 @@ const styles = StyleSheet.create({
     margin: spacing.xl,
     padding: spacing.md,
     backgroundColor: colors.card,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     borderWidth: 1,
     borderColor: colors.danger,
   },
@@ -979,7 +979,7 @@ const styles = StyleSheet.create({
     justifyContent: 'space-between',
     padding: spacing.lg,
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   modalTitle: {
     fontSize: 18,
@@ -1000,26 +1000,26 @@ const styles = StyleSheet.create({
   },
   modalInput: {
     borderWidth: 1,
-    borderColor: colors.border || '#E0E0E0',
+    borderColor: colors.border,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     padding: spacing.md,
     fontSize: 16,
     color: colors.text,
   },
   modalFeedback: {
     padding: spacing.md,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     marginBottom: spacing.md,
   },
   modalFeedbackOk: {
-    backgroundColor: 'rgba(0, 69, 13, 0.1)',
+    backgroundColor: '#eaf7ec',
     borderWidth: 1,
-    borderColor: 'rgba(0, 69, 13, 0.2)',
+    borderColor: '#cfead0',
   },
   modalFeedbackErr: {
-    backgroundColor: 'rgba(186, 26, 26, 0.1)',
+    backgroundColor: colors.dangerContainer,
     borderWidth: 1,
-    borderColor: 'rgba(186, 26, 26, 0.2)',
+    borderColor: '#fecaca',
   },
   modalFeedbackText: {
     fontSize: 14,
@@ -1034,9 +1034,9 @@ const styles = StyleSheet.create({
   modalCancelBtn: {
     paddingVertical: spacing.md,
     paddingHorizontal: spacing.lg,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     borderWidth: 1,
-    borderColor: colors.border || '#E0E0E0',
+    borderColor: colors.border,
   },
   modalCancelText: {
     fontSize: 16,
@@ -1046,7 +1046,7 @@ const styles = StyleSheet.create({
     backgroundColor: colors.primary,
     paddingVertical: spacing.md,
     paddingHorizontal: spacing.xl,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     minWidth: 100,
     alignItems: 'center',
   },
@@ -1068,7 +1068,7 @@ const styles = StyleSheet.create({
   tabContainer: {
     flexDirection: 'row',
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   tabButton: {
     flex: 1,
@@ -1115,10 +1115,10 @@ const styles = StyleSheet.create({
     flexDirection: 'row',
     alignItems: 'center',
     padding: spacing.md,
-    backgroundColor: colors.background,
+    backgroundColor: colors.surfaceLow,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     borderWidth: 1,
-    borderColor: colors.border || '#E5E5EA',
+    borderColor: colors.border,
   },
   uploadIconContainer: {
     width: 56,
@@ -1155,14 +1155,14 @@ const styles = StyleSheet.create({
     alignItems: 'flex-start',
     justifyContent: 'space-between',
     padding: spacing.md,
-    backgroundColor: colors.background,
+    backgroundColor: colors.surfaceLow,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     borderWidth: 1,
-    borderColor: colors.border || '#E0E0E0',
+    borderColor: colors.border,
   },
   addressItemDefault: {
     borderColor: colors.primary,
-    backgroundColor: 'rgba(0, 69, 13, 0.03)',
+    backgroundColor: '#eaf7ec',
   },
   addressItemInfo: {
     flex: 1,
@@ -1181,7 +1181,7 @@ const styles = StyleSheet.create({
   addressBadge: {
     alignSelf: 'flex-start',
     backgroundColor: colors.primary,
-    borderRadius: 12,
+    borderRadius: borderRadius.full,
     paddingHorizontal: spacing.sm,
     paddingVertical: 2,
     marginTop: 4,
@@ -1219,9 +1219,9 @@ const styles = StyleSheet.create({
     padding: spacing.md,
     marginTop: spacing.md,
     borderWidth: 2,
-    borderColor: colors.border || '#E0E0E0',
+    borderColor: colors.border,
     borderStyle: 'dashed',
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
   },
   addressAddBtnText: {
     fontSize: 15,

apps/frontend-mobile/app/(tabs)/scan.tsx

@@ -0,0 +1,81 @@
+import React from 'react';
+import { View, Text, StyleSheet, TouchableOpacity } from 'react-native';
+import { Ionicons } from '@expo/vector-icons';
+import { useRouter } from 'expo-router';
+import { colors, spacing, borderRadius, shadows } from '../../constants/theme';
+
+export default function ScanTabScreen() {
+  const router = useRouter();
+
+  return (
+    <View style={styles.container}>
+      <View style={styles.content}>
+        <View style={styles.iconContainer}>
+          <Ionicons name="scan" size={64} color={colors.scanButton} />
+        </View>
+        <Text style={styles.title}>Escanear TSI</Text>
+        <Text style={styles.description}>
+          Escanea el código de barras de tu tarjeta sanitaria para encontrar tus medicamentos
+        </Text>
+        <TouchableOpacity
+          style={[styles.button, shadows.scanButton]}
+          activeOpacity={0.85}
+          onPress={() => router.push('/scanner')}
+        >
+          <Ionicons name="scan" size={24} color="#ffffff" />
+          <Text style={styles.buttonText}>Iniciar escaneo</Text>
+        </TouchableOpacity>
+      </View>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: colors.background,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  content: {
+    alignItems: 'center',
+    paddingHorizontal: spacing.xl,
+    gap: spacing.md,
+  },
+  iconContainer: {
+    width: 100,
+    height: 100,
+    borderRadius: 50,
+    backgroundColor: colors.primaryContainer,
+    alignItems: 'center',
+    justifyContent: 'center',
+    marginBottom: spacing.sm,
+  },
+  title: {
+    fontSize: 22,
+    fontWeight: 'bold',
+    color: colors.text,
+  },
+  description: {
+    fontSize: 15,
+    color: colors.textSecondary,
+    textAlign: 'center',
+    lineHeight: 22,
+    maxWidth: 280,
+  },
+  button: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: spacing.sm,
+    backgroundColor: colors.scanButton,
+    borderRadius: borderRadius.lg,
+    paddingVertical: spacing.md,
+    paddingHorizontal: spacing.xl,
+    marginTop: spacing.md,
+  },
+  buttonText: {
+    fontSize: 17,
+    fontWeight: '600',
+    color: '#ffffff',
+  },
+});

apps/frontend-mobile/app/_layout.tsx

@@ -5,6 +5,7 @@ import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { GestureHandlerRootView } from 'react-native-gesture-handler';
 import { useAuthStore } from '../store/authStore';
 import { registerForPushNotifications, addNotificationListener, addNotificationResponseListener } from '../services/notifications';
+import { colors } from '../constants/theme';
 
 const queryClient = new QueryClient();
 
@@ -35,20 +36,27 @@ export default function RootLayout() {
   return (
     <GestureHandlerRootView style={{ flex: 1 }}>
       <QueryClientProvider client={queryClient}>
-        <Stack>
+        <Stack
+          screenOptions={{
+            headerStyle: { backgroundColor: colors.card },
+            headerTintColor: colors.primary,
+            headerTitleStyle: { color: colors.text, fontWeight: '600' },
+          }}
+        >
           <Stack.Screen name="(tabs)" options={{ headerShown: false }} />
           <Stack.Screen 
             name="medicine/[id]" 
-            options={{ 
+            options={{ title: 'Medicamento' }} 
-              title: 'Medicamento',
-              headerTintColor: '#007AFF',
-            }} 
           />
           <Stack.Screen 
             name="pharmacy/[id]" 
+            options={{ title: 'Farmacia' }} 
+          />
+          <Stack.Screen 
+            name="scanner" 
             options={{ 
-              title: 'Farmacia',
+              title: 'Escanear',
-              headerTintColor: '#007AFF',
+              headerShown: false,
             }} 
           />
           <Stack.Screen 

apps/frontend-mobile/app/medicine/[id].tsx

@@ -129,7 +129,7 @@ const styles = StyleSheet.create({
     flexDirection: 'row',
     justifyContent: 'space-between',
     alignItems: 'flex-start',
-    padding: spacing.md,
+    padding: spacing.lg,
     backgroundColor: colors.card,
   },
   name: {
@@ -142,14 +142,14 @@ const styles = StyleSheet.create({
   infoSection: {
     backgroundColor: colors.card,
     marginTop: spacing.sm,
-    padding: spacing.md,
+    padding: spacing.lg,
   },
   infoRow: {
     flexDirection: 'row',
     justifyContent: 'space-between',
     paddingVertical: spacing.sm,
     borderBottomWidth: 1,
-    borderBottomColor: colors.separator,
+    borderBottomColor: colors.border,
   },
   infoLabel: {
     fontSize: 14,
@@ -162,7 +162,7 @@ const styles = StyleSheet.create({
   },
   pharmaciesSection: {
     marginTop: spacing.sm,
-    padding: spacing.md,
+    padding: spacing.lg,
   },
   sectionTitle: {
     fontSize: 18,
@@ -177,9 +177,14 @@ const styles = StyleSheet.create({
   },
   pharmacyCard: {
     backgroundColor: colors.card,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     marginBottom: spacing.sm,
     overflow: 'hidden',
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 2 },
+    shadowOpacity: 0.06,
+    shadowRadius: 8,
+    elevation: 2,
   },
   pharmacyCardContent: {
     flexDirection: 'row',
@@ -219,7 +224,7 @@ const styles = StyleSheet.create({
     gap: spacing.xs,
     paddingVertical: spacing.sm,
     borderTopWidth: 1,
-    borderTopColor: colors.separator,
+    borderTopColor: colors.border,
   },
   directionsText: {
     color: colors.primary,

apps/frontend-mobile/components/MedicineCard.tsx

@@ -52,14 +52,14 @@ export function MedicineCard({ medicine }: MedicineCardProps) {
 const styles = StyleSheet.create({
   card: {
     backgroundColor: colors.card,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     padding: spacing.md,
-    marginHorizontal: spacing.md,
+    marginHorizontal: spacing.lg,
     marginVertical: spacing.xs,
     shadowColor: '#000',
     shadowOffset: { width: 0, height: 2 },
-    shadowOpacity: 0.1,
+    shadowOpacity: 0.06,
-    shadowRadius: 4,
+    shadowRadius: 8,
     elevation: 2,
   },
   header: {
@@ -92,7 +92,7 @@ const styles = StyleSheet.create({
   price: {
     fontSize: 14,
     fontWeight: '600',
-    color: colors.text,
+    color: colors.primary,
     marginLeft: spacing.xs,
   },
   labContainer: {

apps/frontend-mobile/components/SearchBar.tsx

@@ -60,11 +60,16 @@ const styles = StyleSheet.create({
     flexDirection: 'row',
     alignItems: 'center',
     backgroundColor: colors.card,
-    borderRadius: borderRadius.md,
+    borderRadius: borderRadius.lg,
     paddingHorizontal: spacing.md,
-    paddingVertical: spacing.sm,
+    paddingVertical: spacing.sm + 2,
-    marginHorizontal: spacing.md,
+    marginHorizontal: spacing.lg,
     marginVertical: spacing.sm,
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 2 },
+    shadowOpacity: 0.06,
+    shadowRadius: 8,
+    elevation: 2,
   },
   icon: {
     marginRight: spacing.sm,

apps/frontend-mobile/components/StockBadge.tsx

@@ -33,13 +33,13 @@ const styles = StyleSheet.create({
     borderRadius: borderRadius.sm,
   },
   success: {
-    backgroundColor: '#D4EDDA',
+    backgroundColor: '#eaf7ec',
   },
   warning: {
-    backgroundColor: '#FFF3CD',
+    backgroundColor: '#fff3cd',
   },
   danger: {
-    backgroundColor: '#F8D7DA',
+    backgroundColor: '#feecec',
   },
   text: {
     fontSize: 12,

apps/frontend-mobile/constants/theme.ts

@@ -1,25 +1,47 @@
 export const colors = {
-  // Primary
+  // Primary - pastel green pharmacy palette (matching PWA)
-  primary: '#007AFF',
+  primary: '#7fbf8f',
-  primaryLight: '#4DA3FF',
+  primaryLight: '#cfead0',
-  primaryDark: '#0056CC',
+  primaryDark: '#09310a',
+  onPrimary: '#09310a',
+  primaryContainer: '#cfead0',
+  onPrimaryContainer: '#0d2b12',
+
+  // Secondary - soft blue
+  secondary: '#a3b8ff',
+  secondaryContainer: '#dbe7ff',
+
+  // Tertiary - soft lavender
+  tertiary: '#c9b3ff',
+  tertiaryContainer: '#efe7ff',
+
+  // Scan button - vivid blue (intentionally prominent)
+  scanButton: '#2b5bb5',
+  scanButtonShadow: 'rgba(43, 91, 181, 0.32)',
 
   // Semantic
   success: '#34C759',
-  danger: '#FF3B30',
+  danger: '#b91c1c',
+  dangerContainer: '#feecec',
   warning: '#FF9500',
 
-  // Neutral
+  // Surface
-  background: '#F2F2F7',
+  background: '#fbfbfb',
-  card: '#FFFFFF',
+  card: '#ffffff',
-  border: '#E5E5EA',
+  surfaceLow: '#f2f4f5',
-  separator: '#C6C6C8',
+  surface: '#eceeef',
+  surfaceHigh: '#e6e8e9',
+  border: '#c0c9bb',
+  separator: '#c0c9bb',
 
   // Text
-  text: '#1C1C1E',
+  text: '#111417',
-  textSecondary: '#8E8E93',
+  textSecondary: '#41493e',
-  textInverse: '#FFFFFF',
+  textInverse: '#ffffff',
-  textLink: '#007AFF',
+  textLink: '#7fbf8f',
+
+  // Accent
+  accentWarm: '#f5a97a',
 };
 
 export const spacing = {
@@ -32,27 +54,67 @@ export const spacing = {
 };
 
 export const borderRadius = {
-  sm: 8,
+  sm: 4,
-  md: 12,
+  md: 8,
-  lg: 16,
+  lg: 12,
-  xl: 24,
+  xl: 16,
+  full: 9999,
 };
 
 export const typography = {
   title: {
     fontSize: 28,
     fontWeight: 'bold' as const,
+    color: '#111417',
   },
   heading: {
     fontSize: 20,
     fontWeight: '600' as const,
+    color: '#111417',
   },
   body: {
     fontSize: 16,
     fontWeight: 'normal' as const,
+    color: '#111417',
+  },
+  bodyLarge: {
+    fontSize: 18,
+    fontWeight: '400' as const,
+    color: '#41493e',
+    lineHeight: 27,
   },
   caption: {
     fontSize: 12,
     fontWeight: 'normal' as const,
+    color: '#41493e',
+  },
+  label: {
+    fontSize: 14,
+    fontWeight: '500' as const,
+    color: '#41493e',
+  },
+};
+
+export const shadows = {
+  soft: {
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 4 },
+    shadowOpacity: 0.08,
+    shadowRadius: 20,
+    elevation: 3,
+  },
+  card: {
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 2 },
+    shadowOpacity: 0.06,
+    shadowRadius: 8,
+    elevation: 2,
+  },
+  scanButton: {
+    shadowColor: '#2b5bb5',
+    shadowOffset: { width: 0, height: 8 },
+    shadowOpacity: 0.32,
+    shadowRadius: 26,
+    elevation: 8,
   },
 };