feat: adaptation mobile — drawer bottom + layout responsive

Sur smartphone (< 640px) : panneau stats masqué par défaut, accessible
via un bottom drawer animé (bouton ☰). PeriodSelector passe en flex-wrap
avec padding tactile 44px. AnimationPlayer s'adapte à la largeur écran.
Badge ville focus affiché directement sur la carte en mode mobile.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.tsx

@@ -11,6 +11,7 @@ import type { TransactionArc } from './data/arcData';
 import { computeStats } from './data/mockData';
 import { computeFlowStats } from './data/arcData';
 import { useAnimation } from './hooks/useAnimation';
+import { useMediaQuery } from './hooks/useMediaQuery';
 
 export default function App() {
   const [periodDays, setPeriodDays] = useState(7);
@@ -25,6 +26,8 @@ export default function App() {
   const [allTimestamps, setAllTimestamps] = useState<number[]>([]);
   const [viewMode, setViewMode] = useState<'heatmap' | 'flow'>('heatmap');
   const [focusCity, setFocusCity] = useState<string | null>(null);
+  const [panelOpen, setPanelOpen] = useState(false);
+  const isMobile = useMediaQuery('(max-width: 639px)');
 
   const animation = useAnimation(transactions, arcs, periodDays, allTimestamps);
 
@@ -86,20 +89,22 @@ export default function App() {
     [arcs, animation.visibleArcs, animation.active],
   );
 
+  const statsPanelProps = {
+    stats: visibleStats,
+    loading,
+    periodDays,
+    source,
+    currentUD,
+    animationLabel: animation.active ? (animation.currentFrame?.label ?? undefined) : undefined,
+    viewMode,
+    flowStats,
+    focusCity,
+  };
+
   return (
     <div className="flex h-svh w-full overflow-hidden bg-[#0a0b0f] text-white">
-      {/* Side panel */}
-      <StatsPanel
-        stats={visibleStats}
-        loading={loading}
-        periodDays={periodDays}
-        source={source}
-        currentUD={currentUD}
-        animationLabel={animation.active ? (animation.currentFrame?.label ?? undefined) : undefined}
-        viewMode={viewMode}
-        flowStats={flowStats}
-        focusCity={focusCity}
-      />
+      {/* Side panel — desktop uniquement */}
+      {!isMobile && <StatsPanel {...statsPanelProps} />}
 
       {/* Map area */}
       <div className="relative flex-1 min-w-0">
@@ -113,8 +118,19 @@ export default function App() {
           />
         )}
 
+        {/* Bouton menu — mobile uniquement */}
+        {isMobile && (
+          <button
+            onClick={() => setPanelOpen(true)}
+            className="absolute top-4 left-4 z-[1001] w-10 h-10 bg-[#0a0b0f]/90 backdrop-blur-sm border border-[#2e2f3a] rounded-xl flex items-center justify-center text-[#d4a843] text-lg"
+            aria-label="Ouvrir le panneau"
+          >
+            ☰
+          </button>
+        )}
+
         {/* Period selector — floating over map */}
-        <div className="absolute top-4 left-1/2 -translate-x-1/2 z-[1000]">
+        <div className={`absolute top-4 z-[1000] ${isMobile ? 'left-16 right-4' : 'left-1/2 -translate-x-1/2'}`}>
           <PeriodSelector
             value={periodDays}
             onChange={handlePeriodChange}
@@ -125,8 +141,16 @@ export default function App() {
           />
         </div>
 
-        {/* Transaction count + source badge (masqués en mode animation) */}
-        {!loading && !animation.active && (
+        {/* Badge ville focus — mobile uniquement */}
+        {isMobile && focusCity && (
+          <div className="absolute top-20 left-1/2 -translate-x-1/2 z-[1001] flex items-center gap-2 bg-[#0a0b0f]/90 backdrop-blur-sm border border-[#d4a843]/40 rounded-full px-3 py-1.5">
+            <span className="text-[#d4a843] text-xs font-medium">{focusCity}</span>
+            <button onClick={() => setFocusCity(null)} className="text-[#4b5563] hover:text-white text-xs leading-none">✕</button>
+          </div>
+        )}
+
+        {/* Transaction count + source badge (masqués sur mobile et en mode animation) */}
+        {!loading && !animation.active && !isMobile && (
           <div className="absolute bottom-8 left-1/2 -translate-x-1/2 z-[1000] flex items-center gap-2">
             <div className="bg-[#0a0b0f]/80 backdrop-blur-sm border border-[#2e2f3a] rounded-full px-4 py-1.5 text-xs text-[#6b7280]">
               <span className="text-[#d4a843] font-medium">{transactions.length}</span> transactions affichées
@@ -168,6 +192,28 @@ export default function App() {
           </div>
         )}
       </div>
+
+      {/* Bottom drawer — mobile uniquement */}
+      {isMobile && (
+        <>
+          {/* Overlay */}
+          {panelOpen && (
+            <div
+              className="fixed inset-0 z-[1009] bg-black/50"
+              onClick={() => setPanelOpen(false)}
+            />
+          )}
+          {/* Drawer */}
+          <div
+            className={`fixed bottom-0 left-0 right-0 z-[1010] h-[85vh] flex flex-col transition-transform duration-300 ${panelOpen ? 'translate-y-0' : 'translate-y-full'}`}
+          >
+            <div className="flex justify-center pt-2 pb-1 bg-[#0a0b0f] rounded-t-2xl border-t border-x border-[#2e2f3a] shrink-0">
+              <div className="w-10 h-1 rounded-full bg-[#2e2f3a]" />
+            </div>
+            <StatsPanel {...statsPanelProps} onClose={() => setPanelOpen(false)} />
+          </div>
+        </>
+      )}
     </div>
   );
 }

src/components/AnimationPlayer.tsx

@@ -26,8 +26,8 @@ export function AnimationPlayer({
   const frame = frames[currentIndex];
 
   return (
-    <div className="absolute bottom-4 left-1/2 -translate-x-1/2 z-[1001] w-[min(640px,90vw)]">
-      <div className="bg-[#0a0b0f]/90 backdrop-blur-sm border border-[#2e2f3a] rounded-2xl px-5 py-3 flex flex-col gap-2.5 shadow-xl">
+    <div className="absolute bottom-4 left-1/2 -translate-x-1/2 z-[1001] w-[min(640px,calc(100vw-1rem))]">
+      <div className="bg-[#0a0b0f]/90 backdrop-blur-sm border border-[#2e2f3a] rounded-2xl px-4 py-3 flex flex-col gap-2.5 shadow-xl">
 
         {/* Frame label + position */}
         <div className="flex items-center justify-between">
@@ -50,7 +50,7 @@ export function AnimationPlayer({
         />
 
         {/* Controls row */}
-        <div className="flex items-center justify-between">
+        <div className="flex flex-wrap items-center justify-between gap-y-2">
 
           {/* Playback buttons */}
           <div className="flex items-center gap-1">

src/components/PeriodSelector.tsx

@@ -41,13 +41,13 @@ export function PeriodSelector({ value, onChange, animationActive, onAnimate, vi
   const isCustomActive = !PRESET_DAYS.has(value);
 
   return (
-    <div className="flex gap-1 bg-[#0f1016] border border-[#2e2f3a] rounded-lg p-1 items-center">
+    <div className="flex flex-wrap gap-1 bg-[#0f1016] border border-[#2e2f3a] rounded-lg p-1 items-center max-w-[calc(100vw-2rem)]">
       {PERIODS.map(({ label, days }) => (
         <button
           key={days}
           onClick={() => { onChange(days); setCustomOpen(false); }}
           className={`
-            px-3 py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
+            px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
             ${value === days && !customOpen
               ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
               : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
@@ -84,7 +84,7 @@ export function PeriodSelector({ value, onChange, animationActive, onAnimate, vi
         <button
           onClick={openCustom}
           className={`
-            px-3 py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
+            px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
             ${isCustomActive
               ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
               : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'

src/components/StatsPanel.tsx

@@ -12,6 +12,7 @@ interface StatsPanelProps {
   viewMode?: 'heatmap' | 'flow';
   flowStats?: FlowStats | null;
   focusCity?: string | null;
+  onClose?: () => void;
 }
 
 const MEDALS = ['🥇', '🥈', '🥉'];
@@ -58,7 +59,7 @@ function CityRow({ city, volume, count, countryCode, accent }: {
   );
 }
 
-export function StatsPanel({ stats, loading, periodDays, source, currentUD, animationLabel, viewMode = 'heatmap', flowStats, focusCity }: StatsPanelProps) {
+export function StatsPanel({ stats, loading, periodDays, source, currentUD, animationLabel, viewMode = 'heatmap', flowStats, focusCity, onClose }: StatsPanelProps) {
   const periodLabel = periodDays === 1 ? '24 dernières heures' : `${periodDays} derniers jours`;
   const prevStats = useRef<PeriodStats | null>(null);
 
@@ -82,7 +83,7 @@ export function StatsPanel({ stats, loading, periodDays, source, currentUD, anim
   if (stats && !loading) prevStats.current = stats;
 
   return (
-    <aside className="w-72 shrink-0 flex flex-col gap-4 bg-[#0a0b0f]/95 backdrop-blur-sm border-r border-[#1e1f2a] p-5 overflow-y-auto">
+    <aside className="w-full lg:w-72 shrink-0 flex flex-col gap-4 bg-[#0a0b0f]/95 backdrop-blur-sm border-r border-[#1e1f2a] p-5 overflow-y-auto h-full">
       {/* Header */}
       <div className="flex items-center gap-2.5">
         <div className="w-8 h-8 rounded-full bg-[#d4a843] flex items-center justify-center text-[#0a0b0f] font-bold text-sm shadow-[0_0_16px_rgba(212,168,67,0.5)]">
@@ -95,6 +96,15 @@ export function StatsPanel({ stats, loading, periodDays, source, currentUD, anim
           </h1>
           <p className="text-[#4b5563] text-xs">Monnaie libre · Flux géo</p>
         </div>
+        {onClose && (
+          <button
+            onClick={onClose}
+            className="ml-auto text-[#4b5563] hover:text-white transition-colors p-1 text-lg leading-none"
+            aria-label="Fermer"
+          >
+            ✕
+          </button>
+        )}
       </div>
 
       {/* Description */}

src/hooks/useMediaQuery.ts

@@ -0,0 +1,12 @@
+import { useState, useEffect } from 'react';
+
+export function useMediaQuery(query: string): boolean {
+  const [matches, setMatches] = useState(() => window.matchMedia(query).matches);
+  useEffect(() => {
+    const mq = window.matchMedia(query);
+    const handler = (e: MediaQueryListEvent) => setMatches(e.matches);
+    mq.addEventListener('change', handler);
+    return () => mq.removeEventListener('change', handler);
+  }, [query]);
+  return matches;
+}