add firebase and sign up

.gitignore

@@ -10,6 +10,7 @@ lerna-debug.log*
 node_modules
 dist
 dist-ssr
+.env
 *.local
 
 # Editor directories and files

package.json

@@ -15,6 +15,7 @@
   },
   "dependencies": {
     "d3": "^7.9.0",
+    "firebase": "^12.14.0",
     "topojson-client": "^3.1.0",
     "world-atlas": "^2.0.2"
   }

src/App.svelte

@@ -1,4 +1,7 @@
 <script>
+  import { initAuth, getLoading, getUser, getNeedsCountry } from './lib/auth/userStore.svelte.js';
+  import LoginOverlay from './lib/auth/LoginOverlay.svelte';
+  import CountryPicker from './lib/auth/CountryPicker.svelte';
   import Layout from './lib/layout/Layout.svelte';
   import WorldMap from './lib/world-map/WorldMap.svelte';
   import StatsPanel from './lib/world-map/StatsPanel.svelte';
@@ -9,14 +12,25 @@
   function onNavigate(s) {
     screen = s;
   }
+
+  $effect(() => {
+    initAuth();
+  });
+
+  let loading = $derived(getLoading());
+  let user = $derived(getUser());
+  let needsCountry = $derived(getNeedsCountry());
 </script>
 
+{#if loading}
+  <div class="loading-screen">
+    <span class="loading-text">Loading...</span>
+  </div>
+{:else}
   <Layout {screen} {onNavigate}>
     {#if screen === 'worldmap'}
       <div class="worldmap-page">
-      <div class="map-area">
+        <div class="map-area"><WorldMap /></div>
-        <WorldMap />
-      </div>
         <StatsPanel />
       </div>
     {:else}
@@ -24,7 +38,28 @@
     {/if}
   </Layout>
 
+  {#if !user}
+    <LoginOverlay />
+  {:else if needsCountry}
+    <CountryPicker />
+  {/if}
+{/if}
+
 <style>
+  .loading-screen {
+    width: 100vw;
+    height: 100vh;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: #0f172a;
+  }
+
+  .loading-text {
+    font: 400 18px/1.4 sans-serif;
+    color: #94a3b8;
+  }
+
   .worldmap-page {
     display: flex;
     flex-direction: row;

src/lib/TimelineView.svelte

@@ -1,20 +1,14 @@
 <script>
-  import { get } from 'svelte/store';
+  import { getEntries } from './stores/entriesStore.svelte.js';
-  import { journals } from './stores/journalStore.js';
   import JournalDetail from './JournalDetail.svelte';
 
-  /** @type {import('./stores/journalStore.js').JournalEntry|null} */
+  /** @type {Record<string, number>} */
   let selected = $state(null);
 
   /** @type {Record<string, number>} */
   let photoIdx = $state({});
 
-  // Store subscription
+  let entries = $derived(getEntries());
-  let entries = $state(get(journals));
-  $effect(() => {
-    const unsub = journals.subscribe((v) => { entries = v; });
-    return unsub;
-  });
 
   const sortOptions = [
     { value: 'date-desc', label: 'Newest First' },
@@ -25,15 +19,13 @@
 
   let sortKey = $state('date-desc');
 
-  // Explicit $effect so sortKey changes always trigger a re-sort
+  let sortedEntries = $derived.by(() => {
-  let sortedEntries = $state(/** @type {typeof entries} */([]));
-  $effect(() => {
     const key = sortKey;
-    sortedEntries = [...entries].sort((a, b) => {
+    return [...entries].sort((a, b) => {
       if (key === 'date-asc')     return a.date.localeCompare(b.date);
       if (key === 'date-desc')    return b.date.localeCompare(a.date);
-      if (key === 'country-asc')  return a.location.country.localeCompare(b.location.country) || b.date.localeCompare(a.date);
+      if (key === 'country-asc')  return (a.countryName || '').localeCompare(b.countryName || '') || b.date.localeCompare(a.date);
-      if (key === 'country-desc') return b.location.country.localeCompare(a.location.country) || b.date.localeCompare(a.date);
+      if (key === 'country-desc') return (b.countryName || '').localeCompare(a.countryName || '') || b.date.localeCompare(a.date);
       return 0;
     });
   });
@@ -54,6 +46,25 @@
     e.stopPropagation();
     photoIdx = { ...photoIdx, [id]: i };
   }
+
+  function tripType(/** @type {string[] | undefined} */ companions) {
+    if (!companions || companions.length === 0 || (companions.length === 1 && companions[0] === 'solo')) return 'solo';
+    return 'friends';
+  }
+
+  function companionText(/** @type {string[] | undefined} */ companions) {
+    if (!companions || companions.length === 0 || (companions.length === 1 && companions[0] === 'solo')) return 'Solo';
+    return companions.join(', ');
+  }
+
+  const TRANSPORT_LABELS = {
+    plane: '✈️ Plane',
+    car: '🚗 Car',
+    train: '🚆 Train',
+    boat: '⛵ Boat',
+    bus: '🚌 Bus',
+    other: 'Other',
+  };
 </script>
 
 {#if selected}
@@ -88,7 +99,7 @@
               <div class="above-card">
                 <time class="above-date" datetime={entry.date}>{formatDate(entry.date)}</time>
                 <span class="above-sep">·</span>
-                <span class="above-loc">{entry.location.city}, {entry.location.country}</span>
+                <span class="above-loc">{entry.city}, {entry.countryName}</span>
                 <span class="above-sep">·</span>
                 <span class="above-days">{entry.days} {entry.days === 1 ? 'day' : 'days'}</span>
               </div>
@@ -96,7 +107,7 @@
                 onclick={() => (selected = entry)}
                 onkeydown={(e) => e.key === 'Enter' && (selected = entry)}>
 
-                {#if entry.photos.length > 0}
+                {#if entry.photos?.length > 0}
                   <div class="gallery">
                     <img class="gallery-main" src={entry.photos[idx]}
                       alt="{entry.title} photo {idx + 1}" loading="lazy" />
@@ -124,16 +135,19 @@
                     <p class="entry-memo">{entry.memo}</p>
                   {/if}
                   <div class="entry-song">
+                    {#if entry.transportation && TRANSPORT_LABELS[entry.transportation]}
+                      <span class="transport-badge">{TRANSPORT_LABELS[entry.transportation]}</span>
+                    {/if}
                     <svg class="song-icon" width="13" height="13" viewBox="0 0 24 24" fill="none">
                       <path d="M9 18V5l12-2v13" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
                       <circle cx="6" cy="18" r="3" stroke="currentColor" stroke-width="2"/>
                       <circle cx="18" cy="16" r="3" stroke="currentColor" stroke-width="2"/>
                     </svg>
-                    <span class="song-title">{entry.song.title}</span>
+                    <span class="song-title">{entry.song?.title || ''}</span>
                     <span class="song-sep">·</span>
-                    <span class="song-artist">{entry.song.artist}</span>
+                    <span class="song-artist">{entry.song?.artist || ''}</span>
-                    <span class="trip-badge trip-badge--{entry.tripType}">
+                    <span class="trip-badge" class:trip-badge--solo={tripType(entry.companions) === 'solo'} class:trip-badge--friends={tripType(entry.companions) === 'friends'}>
-                      {entry.tripType === 'solo' ? 'Solo' : 'With Friends'}
+                      {companionText(entry.companions)}
                     </span>
                   </div>
                 </div>
@@ -158,7 +172,6 @@
     font-family: var(--sans, system-ui, sans-serif);
   }
 
-  /* Toolbar */
   .toolbar {
     display: flex;
     align-items: flex-end;
@@ -204,7 +217,6 @@
   }
   select:focus { outline: 2px solid var(--accent, #aa3bff); outline-offset: 2px; }
 
-  /* Above-card */
   .above-card {
     display: flex;
     align-items: center;
@@ -216,7 +228,6 @@
   .above-loc, .above-days { font-size: 12px; color: var(--text, #6b6375); }
   .above-sep { font-size: 11px; color: var(--border, #c8c6cc); user-select: none; }
 
-  /* Card */
   .entry-card {
     display: block;
     width: 100%;
@@ -236,6 +247,7 @@
 
   .entry-body { padding: 14px 18px 18px; }
 
+  .entry-song { gap: 5px; }
   .entry-song .trip-badge { margin-left: auto; flex-shrink: 0; }
 
   .trip-badge {
@@ -248,6 +260,13 @@
   .trip-badge--solo    { background: rgba(245,158,11,0.12); color: #b45309; }
   .trip-badge--friends { background: rgba(59,130,246,0.12); color: #1d4ed8; }
 
+  .transport-badge {
+    font-size: 11px;
+    font-weight: 500;
+    color: #6b6375;
+    flex-shrink: 0;
+  }
+
   .entry-title {
     font-size: 16px;
     font-weight: 600;
@@ -276,7 +295,6 @@
   .song-title { font-weight: 500; color: var(--text-h, #08060d); }
   .song-sep { opacity: 0.35; }
 
-  /* Gallery */
   .gallery { position: relative; overflow: hidden; background: #000; }
   .gallery-main { width: 100%; height: 220px; object-fit: cover; display: block; }
 
@@ -305,7 +323,6 @@
   }
   .gallery-pip.active { background: #fff; transform: scale(1.3); }
 
-  /* Vertical timeline */
   .v-list { list-style: none; padding: 0; margin: 0; position: relative; }
   .v-list::before {
     content: '';
@@ -326,7 +343,6 @@
 
   .v-entry-wrap { flex: 1; display: flex; flex-direction: column; }
 
-  /* Footer */
   .page-footer {
     margin-top: 40px;
     text-align: center;

src/lib/auth/CountryPicker.svelte

@@ -0,0 +1,212 @@
+<script>
+  import { getUser, getUserProfile, setHomeCountry } from './userStore.svelte.js';
+  import worldData from 'world-atlas/countries-50m.json';
+
+  let user = $derived(getUser());
+  let profile = $derived(getUserProfile());
+
+  const countries = $derived.by(() => {
+    if (!worldData?.objects?.countries?.geometries) return [];
+    const names = worldData.objects.countries.geometries
+      .map(g => g.properties?.name)
+      .filter(Boolean);
+    return [...new Set(names)].sort();
+  });
+
+  let search = $state('');
+  let selectedCountry = $state('');
+
+  let filtered = $derived(
+    search
+      ? countries.filter(c => c.toLowerCase().includes(search.toLowerCase()))
+      : countries
+  );
+
+  let open = $state(false);
+
+  function toggleDropdown() {
+    open = !open;
+  }
+
+  function select(c) {
+    selectedCountry = c;
+    search = c;
+    open = false;
+  }
+
+  function handleSubmit() {
+    if (selectedCountry) {
+      setHomeCountry(selectedCountry);
+    }
+  }
+
+  function handleKeydown(e) {
+    if (e.key === 'Enter' && selectedCountry) {
+      handleSubmit();
+    }
+    if (e.key === 'Escape') {
+      open = false;
+    }
+  }
+</script>
+
+<div class="overlay">
+  <div class="card">
+    <h1 class="heading">Welcome, {profile?.displayName || 'Traveler'}!</h1>
+    <p class="subtitle">Select your home country to get started</p>
+
+    <div class="dropdown" class:open>
+      <input
+        type="text"
+        placeholder="Search for a country..."
+        bind:value={search}
+        onfocus={() => { open = true; }}
+        oninput={() => { open = true; selectedCountry = ''; }}
+        onkeydown={handleKeydown}
+        class="search-input"
+      />
+      {#if open}
+        <ul class="list" role="listbox">
+          {#each filtered as country}
+            <li
+              role="option"
+              aria-selected={selectedCountry === country}
+              class:selected={selectedCountry === country}
+              onclick={() => select(country)}
+              onkeydown={(e) => { if (e.key === 'Enter') select(country); }}
+              tabindex="0"
+            >
+              {country}
+            </li>
+          {/each}
+          {#if filtered.length === 0}
+            <li class="no-results">No countries found</li>
+          {/if}
+        </ul>
+      {/if}
+    </div>
+
+    <button
+      class="continue-btn"
+      disabled={!selectedCountry}
+      onclick={handleSubmit}
+    >
+      Continue
+    </button>
+  </div>
+</div>
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(15, 23, 42, 0.85);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 100;
+    backdrop-filter: blur(4px);
+  }
+
+  .card {
+    background: #1e2937;
+    border-radius: 16px;
+    padding: 40px 36px;
+    text-align: center;
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
+    max-width: 420px;
+    width: 90%;
+  }
+
+  .heading {
+    font: 700 24px/1.3 sans-serif;
+    color: #f1f5f9;
+    margin-bottom: 6px;
+  }
+
+  .subtitle {
+    font: 400 15px/1.4 sans-serif;
+    color: #94a3b8;
+    margin-bottom: 28px;
+  }
+
+  .dropdown {
+    position: relative;
+    margin-bottom: 24px;
+    text-align: left;
+  }
+
+  .search-input {
+    width: 100%;
+    padding: 12px 16px;
+    border: 1px solid #475569;
+    border-radius: 8px;
+    background: #0f172a;
+    color: #f1f5f9;
+    font: 400 15px/1.4 sans-serif;
+    outline: none;
+    transition: border-color 0.2s;
+  }
+
+  .search-input:focus {
+    border-color: #3b82f6;
+  }
+
+  .search-input::placeholder {
+    color: #64748b;
+  }
+
+  .list {
+    position: absolute;
+    top: calc(100% + 4px);
+    left: 0;
+    right: 0;
+    max-height: 240px;
+    overflow-y: auto;
+    background: #0f172a;
+    border: 1px solid #475569;
+    border-radius: 8px;
+    list-style: none;
+    z-index: 10;
+  }
+
+  .list li {
+    padding: 10px 16px;
+    cursor: pointer;
+    color: #cbd5e1;
+    font: 400 14px/1.4 sans-serif;
+    transition: background 0.15s;
+  }
+
+  .list li:hover,
+  .list li.selected {
+    background: #1e3a5f;
+    color: #f1f5f9;
+  }
+
+  .no-results {
+    color: #64748b;
+    cursor: default;
+  }
+
+  .continue-btn {
+    width: 100%;
+    padding: 12px 24px;
+    border: none;
+    border-radius: 8px;
+    background: #3b82f6;
+    color: #fff;
+    font: 600 16px/1.4 sans-serif;
+    cursor: pointer;
+    transition: background 0.2s, opacity 0.2s;
+  }
+
+  .continue-btn:hover:not(:disabled) {
+    background: #2563eb;
+  }
+
+  .continue-btn:disabled {
+    opacity: 0.4;
+    cursor: default;
+  }
+</style>

src/lib/auth/LoginOverlay.svelte

@@ -0,0 +1,87 @@
+<script>
+  import { signInWithGoogle } from './userStore.svelte.js';
+</script>
+
+<div class="overlay">
+  <div class="card">
+    <img src="/logo.png" alt="Map Journal" class="logo" />
+    <h1 class="title">Map Journal</h1>
+    <p class="subtitle">Sign in to start your journey</p>
+    <button class="google-btn" onclick={signInWithGoogle}>
+      <svg class="google-icon" viewBox="0 0 48 48">
+        <path fill="#EA4335" d="M24 9.5c3.54 0 6.71 1.22 9.21 3.6l6.85-6.85C35.9 2.38 30.47 0 24 0 14.62 0 6.51 5.38 2.56 13.22l7.98 6.19C12.43 13.72 17.74 9.5 24 9.5z"/>
+        <path fill="#4285F4" d="M46.98 24.55c0-1.57-.15-3.09-.38-4.55H24v9.02h12.94c-.58 2.96-2.26 5.48-4.78 7.18l7.73 6c4.51-4.18 7.09-10.36 7.09-17.65z"/>
+        <path fill="#FBBC05" d="M10.53 28.59A14.5 14.5 0 0 1 9.5 24c0-1.59.28-3.14.76-4.59l-7.98-6.19A23.99 23.99 0 0 0 0 24c0 3.77.87 7.35 2.56 10.78l7.97-6.19z"/>
+        <path fill="#34A853" d="M24 48c6.48 0 11.93-2.13 15.89-5.81l-7.73-6c-2.15 1.45-4.92 2.3-8.16 2.3-6.26 0-11.57-4.22-13.47-9.91l-7.98 6.19C6.51 42.62 14.62 48 24 48z"/>
+        <path fill="none" d="M0 0h48v48H0z"/>
+      </svg>
+      Sign in with Google
+    </button>
+  </div>
+</div>
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(15, 23, 42, 0.85);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 100;
+    backdrop-filter: blur(4px);
+  }
+
+  .card {
+    background: #1e2937;
+    border-radius: 16px;
+    padding: 48px 40px;
+    text-align: center;
+    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
+    max-width: 400px;
+    width: 90%;
+  }
+
+  .logo {
+    width: 80px;
+    height: 80px;
+    border-radius: 12px;
+    margin-bottom: 16px;
+  }
+
+  .title {
+    font: 700 28px/1.2 sans-serif;
+    color: #f1f5f9;
+    margin-bottom: 8px;
+  }
+
+  .subtitle {
+    font: 400 15px/1.4 sans-serif;
+    color: #94a3b8;
+    margin-bottom: 32px;
+  }
+
+  .google-btn {
+    display: inline-flex;
+    align-items: center;
+    gap: 12px;
+    padding: 12px 28px;
+    border: 1px solid rgba(255,255,255,0.15);
+    border-radius: 8px;
+    background: #334155;
+    color: #f1f5f9;
+    font: 500 16px/1.4 sans-serif;
+    cursor: pointer;
+    transition: background 0.2s;
+  }
+
+  .google-btn:hover {
+    background: #475569;
+  }
+
+  .google-icon {
+    width: 22px;
+    height: 22px;
+    flex-shrink: 0;
+  }
+</style>

src/lib/auth/userStore.svelte.js

@@ -0,0 +1,72 @@
+import { auth, db, googleProvider } from '../firebase.js';
+import { onAuthStateChanged, signInWithPopup, signOut as fbSignOut } from 'firebase/auth';
+import { doc, getDoc, setDoc, serverTimestamp } from 'firebase/firestore';
+import { initSelectionListener } from '../layout/selection.svelte.js';
+import { initEntriesListener } from '../stores/entriesStore.svelte.js';
+
+let _initialized = false;
+
+let user = $state(null);
+let userProfile = $state(null);
+let loading = $state(true);
+let needsCountry = $state(false);
+
+export function getUser() { return user; }
+export function getUserProfile() { return userProfile; }
+export function getLoading() { return loading; }
+export function getNeedsCountry() { return needsCountry; }
+
+export async function signInWithGoogle() {
+  await signInWithPopup(auth, googleProvider);
+}
+
+export async function signOut() {
+  await fbSignOut(auth);
+  user = null;
+  userProfile = null;
+  needsCountry = false;
+}
+
+export async function setHomeCountry(country) {
+  if (!user) return;
+  await setDoc(doc(db, 'users', user.uid), {
+    displayName: user.displayName,
+    photoURL: user.photoURL,
+    email: user.email,
+    homeCountry: country,
+    visitedCountries: [],
+    createdAt: serverTimestamp(),
+  });
+  userProfile = { ...userProfile, homeCountry: country, visitedCountries: [] };
+  needsCountry = false;
+}
+
+export function initAuth() {
+  if (_initialized) return;
+  _initialized = true;
+  onAuthStateChanged(auth, async (fbUser) => {
+    if (fbUser) {
+      user = fbUser;
+      initSelectionListener(fbUser.uid);
+      initEntriesListener(fbUser.uid);
+      const docRef = doc(db, 'users', fbUser.uid);
+      const docSnap = await getDoc(docRef);
+      if (docSnap.exists()) {
+        userProfile = docSnap.data();
+        needsCountry = false;
+      } else {
+        userProfile = {
+          displayName: fbUser.displayName,
+          photoURL: fbUser.photoURL,
+          email: fbUser.email,
+        };
+        needsCountry = true;
+      }
+    } else {
+      user = null;
+      userProfile = null;
+      needsCountry = false;
+    }
+    loading = false;
+  });
+}

src/lib/firebase.js

@@ -0,0 +1,18 @@
+import { initializeApp } from "firebase/app";
+import { getAuth, GoogleAuthProvider } from "firebase/auth";
+import { getFirestore } from "firebase/firestore";
+
+const firebaseConfig = {
+  apiKey: import.meta.env.VITE_FIREBASE_API_KEY,
+  authDomain: import.meta.env.VITE_FIREBASE_AUTH_DOMAIN,
+  projectId: import.meta.env.VITE_FIREBASE_PROJECT_ID,
+  storageBucket: import.meta.env.VITE_FIREBASE_STORAGE_BUCKET,
+  messagingSenderId: import.meta.env.VITE_FIREBASE_MESSAGING_SENDER_ID,
+  appId: import.meta.env.VITE_FIREBASE_APP_ID,
+};
+
+const app = initializeApp(firebaseConfig);
+
+export const auth = getAuth(app);
+export const db = getFirestore(app);
+export const googleProvider = new GoogleAuthProvider();

src/lib/layout/TopBar.svelte

@@ -1,5 +1,21 @@
 <script>
+  import { getUser, getUserProfile, signOut } from '../auth/userStore.svelte.js';
+
   let { screen, onNavigate } = $props();
+
+  let user = $derived(getUser());
+  let profile = $derived(getUserProfile());
+
+  let menuOpen = $state(false);
+
+  function toggleMenu() {
+    menuOpen = !menuOpen;
+  }
+
+  function handleSignOut() {
+    menuOpen = false;
+    signOut();
+  }
 </script>
 
 <div class="topbar">
@@ -20,10 +36,34 @@
   </div>
 
   <div class="right">
-    <img src="/profile.jpg" alt="Profile" class="avatar" />
+    {#if user}
+      <div class="avatar-wrapper">
+        <button class="avatar-btn" onclick={toggleMenu} onkeydown={(e) => { if (e.key === 'Enter') toggleMenu(); }}>
+          <img
+            src={user.photoURL || '/profile.jpg'}
+            alt="Profile"
+            class="avatar"
+          />
+        </button>
+        {#if menuOpen}
+          <div class="dropdown-menu">
+            <div class="menu-header">
+              <span class="menu-name">{profile?.displayName || user.displayName}</span>
+              <span class="menu-email">{user.email}</span>
+            </div>
+            <div class="divider"></div>
+            <button class="menu-item" onclick={handleSignOut}>Sign out</button>
+          </div>
+        {/if}
+      </div>
+    {/if}
   </div>
 </div>
 
+{#if menuOpen}
+  <button class="backdrop" aria-label="Close menu" onclick={() => { menuOpen = false; }}></button>
+{/if}
+
 <style>
   .topbar {
     height: 64px;
@@ -101,12 +141,85 @@
     align-items: center;
   }
 
+  .avatar-wrapper {
+    position: relative;
+  }
+
+  .avatar-btn {
+    display: flex;
+    padding: 0;
+    border: none;
+    background: none;
+    cursor: pointer;
+    border-radius: 50%;
+  }
+
   .avatar {
     width: 45px;
     height: 45px;
     border-radius: 50%;
     object-fit: cover;
-    cursor: pointer;
     flex-shrink: 0;
   }
+
+  .dropdown-menu {
+    position: absolute;
+    top: calc(100% + 8px);
+    right: 0;
+    background: #1e2937;
+    border: 1px solid #334155;
+    border-radius: 10px;
+    padding: 8px 0;
+    min-width: 200px;
+    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
+    z-index: 50;
+  }
+
+  .menu-header {
+    padding: 8px 16px;
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+  }
+
+  .menu-name {
+    font: 600 14px/1.3 sans-serif;
+    color: #f1f5f9;
+  }
+
+  .menu-email {
+    font: 400 12px/1.3 sans-serif;
+    color: #94a3b8;
+  }
+
+  .divider {
+    height: 1px;
+    background: #334155;
+    margin: 6px 0;
+  }
+
+  .menu-item {
+    width: 100%;
+    padding: 8px 16px;
+    border: none;
+    background: none;
+    text-align: left;
+    font: 400 14px/1.4 sans-serif;
+    color: #fca5a5;
+    cursor: pointer;
+    transition: background 0.15s;
+  }
+
+  .menu-item:hover {
+    background: rgba(255, 255, 255, 0.05);
+  }
+
+  .backdrop {
+    position: fixed;
+    inset: 0;
+    z-index: 40;
+    border: none;
+    background: transparent;
+    cursor: default;
+  }
 </style>

src/lib/layout/selection.svelte.js

@@ -1,18 +1,46 @@
+import { db } from '../firebase.js';
+import { doc, onSnapshot, updateDoc, arrayUnion, arrayRemove } from 'firebase/firestore';
+
 let selected = $state(new Set());
 let totalCountries = $state(0);
+let _uid = null;
+let _unsubscribe = null;
+
+export function initSelectionListener(uid) {
+  if (_unsubscribe) _unsubscribe();
+  _uid = uid;
+  const userRef = doc(db, 'users', uid);
+  _unsubscribe = onSnapshot(userRef, (snap) => {
+    if (snap.exists()) {
+      const codes = snap.data().visitedCountries || [];
+      selected = new Set(codes);
+    }
+  });
+}
 
 export function toggle(id) {
+  if (!_uid) return;
+  const was = selected.has(id);
   const next = new Set(selected);
-  if (next.has(id)) {
+  if (was) {
     next.delete(id);
   } else {
     next.add(id);
   }
   selected = next;
+  const userRef = doc(db, 'users', _uid);
+  if (was) {
+    updateDoc(userRef, { visitedCountries: arrayRemove(id) });
+  } else {
+    updateDoc(userRef, { visitedCountries: arrayUnion(id) });
+  }
 }
 
 export function clearAll() {
+  if (!_uid) return;
   selected = new Set();
+  const userRef = doc(db, 'users', _uid);
+  updateDoc(userRef, { visitedCountries: [] });
 }
 
 export function getSelected() {