feat(ui): Phase 3c — vehicle selector panel with all Tesla trims

Replace the simple <select> vehicle chip with a proper anchored
glass panel matching Direction B.

- Full Tesla model catalogue (S / 3 / Y / X / Cybertruck) with all
  trims (Standard / Long Range RWD / Long Range AWD / Performance /
  Plaid / Cyberbeast) and per-trim range, peak kW, 0-100, top speed,
  and badges (Most popular, Best range, Performance).
- Vehicle chip in the top bar now shows the model + abbreviated trim
  ("Model Y LR AWD") with range underneath, opens the panel anchored
  to the chip's bounding rect.
- Panel header has a starting-charge slider (10-100%, snaps to 5).
  Each trim shows "X km now" (= range × charge%) in green so the
  user sees the live impact of picking a different trim or charge
  level.
- Model groups collapse / expand independently; the currently-
  selected model expands by default.
- Picking a trim updates the chip everywhere; closes the panel.
- Backdrop click and Esc both dismiss.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

client/src/pages/TeslaTripPlanner.tsx

@@ -118,13 +118,89 @@ const EMPTY_ITINERARY: Itinerary = {
 
 const STOP_TYPES: StopType[] = ['supercharger', 'destination-charger', 'hotel', 'attraction', 'restaurant', 'cafe', 'viewpoint', 'custom', 'origin', 'destination', 'tunnel'];
 
-const VEHICLES = [
-  { name: 'Model Y Long Range', trim: 'Long Range AWD', rangeKm: 514, efficiency: 165 },
-  { name: 'Model 3 Highland LR', trim: 'Long Range', rangeKm: 549, efficiency: 155 },
-  { name: 'Model S Long Range', trim: 'Long Range', rangeKm: 634, efficiency: 175 },
-  { name: 'Model Y RWD (EU)', trim: 'Standard Range', rangeKm: 455, efficiency: 158 },
+interface VehicleTrim {
+  id: string;
+  name: string;        // e.g. "Long Range AWD"
+  rangeKm: number;
+  kw: number;
+  sec0to60: number;
+  topKmh: number;
+  badge?: string;
+}
+interface VehicleModel {
+  id: string;
+  name: string;        // e.g. "Model Y"
+  description: string;
+  trims: VehicleTrim[];
+}
+interface Vehicle {
+  modelId: string;
+  trimId: string;
+  name: string;        // model name
+  trim: string;        // trim name
+  rangeKm: number;
+  kw: number;
+  sec0to60: number;
+  topKmh: number;
+  badge?: string;
+}
+
+const TESLA_MODELS: VehicleModel[] = [
+  {
+    id: 'model-s', name: 'Model S', description: 'Fastback sedan',
+    trims: [
+      { id: 'lr', name: 'Long Range', rangeKm: 634, kw: 250, sec0to60: 3.1, topKmh: 240 },
+      { id: 'plaid', name: 'Plaid', rangeKm: 600, kw: 250, sec0to60: 1.99, topKmh: 322, badge: 'Performance' },
+    ],
+  },
+  {
+    id: 'model-3', name: 'Model 3', description: 'Compact sedan',
+    trims: [
+      { id: 'std', name: 'Standard Range', rangeKm: 438, kw: 175, sec0to60: 5.6, topKmh: 201 },
+      { id: 'lr-rwd', name: 'Long Range RWD', rangeKm: 553, kw: 250, sec0to60: 4.9, topKmh: 201, badge: 'Best range' },
+      { id: 'lr-awd', name: 'Long Range AWD', rangeKm: 528, kw: 250, sec0to60: 4.2, topKmh: 201 },
+      { id: 'perf', name: 'Performance', rangeKm: 528, kw: 250, sec0to60: 2.9, topKmh: 261, badge: 'Performance' },
+    ],
+  },
+  {
+    id: 'model-y', name: 'Model Y', description: 'Crossover · best-seller',
+    trims: [
+      { id: 'std', name: 'Standard Range', rangeKm: 460, kw: 175, sec0to60: 5.6, topKmh: 217 },
+      { id: 'lr-rwd', name: 'Long Range RWD', rangeKm: 531, kw: 250, sec0to60: 5.9, topKmh: 217 },
+      { id: 'lr-awd', name: 'Long Range AWD', rangeKm: 514, kw: 250, sec0to60: 4.8, topKmh: 217, badge: 'Most popular' },
+      { id: 'perf', name: 'Performance', rangeKm: 488, kw: 250, sec0to60: 3.5, topKmh: 250, badge: 'Performance' },
+    ],
+  },
+  {
+    id: 'model-x', name: 'Model X', description: 'Three-row SUV · falcon doors',
+    trims: [
+      { id: 'lr', name: 'Long Range', rangeKm: 543, kw: 250, sec0to60: 3.8, topKmh: 250 },
+      { id: 'plaid', name: 'Plaid', rangeKm: 528, kw: 250, sec0to60: 2.5, topKmh: 262, badge: 'Performance' },
+    ],
+  },
+  {
+    id: 'cybertruck', name: 'Cybertruck', description: 'Angular pickup',
+    trims: [
+      { id: 'rwd', name: 'Long Range RWD', rangeKm: 563, kw: 350, sec0to60: 6.5, topKmh: 180 },
+      { id: 'awd', name: 'AWD', rangeKm: 547, kw: 350, sec0to60: 4.1, topKmh: 180 },
+      { id: 'beast', name: 'Cyberbeast', rangeKm: 515, kw: 350, sec0to60: 2.6, topKmh: 209, badge: 'Performance' },
+    ],
+  },
 ];
 
+const DEFAULT_VEHICLE: Vehicle = (() => {
+  const m = TESLA_MODELS.find(x => x.id === 'model-y')!;
+  const t = m.trims.find(tr => tr.id === 'lr-awd')!;
+  return { modelId: m.id, trimId: t.id, name: m.name, trim: t.name, rangeKm: t.rangeKm, kw: t.kw, sec0to60: t.sec0to60, topKmh: t.topKmh, badge: t.badge };
+})();
+
+function abbrevTrim(trim: string): string {
+  return trim
+    .replace('Long Range', 'LR')
+    .replace('Standard Range', 'Std')
+    .replace('Performance', 'Perf');
+}
+
 const QUICK_PROMPTS = [
   'Plan a 2-day trip from London to Edinburgh in my Model Y',
   'I want to drive from Amsterdam to Munich',
@@ -1031,7 +1107,7 @@ function makePinIcon(color: string, active: boolean, hover: boolean): L.DivIcon
 function TopBar({
   origin, destination, onOriginChange, onDestinationChange, onODCommit,
   chatInput, setChatInput, onChatSubmit, chips, onRemoveChip,
-  vehicle, onVehicleChange, grokStatus, onOpenGpx,
+  vehicle, onOpenVehiclePanel, grokStatus, onOpenGpx,
 }: {
   origin: string; destination: string;
   onOriginChange: (v: string) => void;
@@ -1040,7 +1116,7 @@ function TopBar({
   chatInput: string; setChatInput: (v: string) => void;
   onChatSubmit: () => void;
   chips: string[]; onRemoveChip: (i: number) => void;
-  vehicle: typeof VEHICLES[number]; onVehicleChange: (v: typeof VEHICLES[number]) => void;
+  vehicle: Vehicle; onOpenVehiclePanel: (rect: DOMRect) => void;
   grokStatus: { label?: string };
   onOpenGpx: () => void;
 }) {
@@ -1141,28 +1217,22 @@ function TopBar({
         </button>
       </div>
 
-      {/* Vehicle chip */}
-      <div className="relative">
-        <select
-          value={vehicle.name}
-          onChange={(e) => onVehicleChange(VEHICLES.find(v => v.name === e.target.value)!)}
-          className="appearance-none h-[38px] pl-9 pr-7 rounded-[10px] text-[12px] cursor-pointer"
-          style={{
-            background: 'var(--gd-panel)',
-            border: '1px solid var(--gd-border)',
-            color: 'var(--gd-text)',
-            fontFamily: 'inherit',
-          }}
+      {/* Vehicle chip — opens trim panel */}
+      <button
+        onClick={(e) => onOpenVehiclePanel(e.currentTarget.getBoundingClientRect())}
+        className="h-[38px] px-3 inline-flex items-center gap-2 rounded-[10px] cursor-pointer"
+        style={{ background: 'var(--gd-panel)', border: '1px solid var(--gd-border)' }}
       >
-          {VEHICLES.map(v => (
-            <option key={v.name} value={v.name}>
-              {v.name} — {v.rangeKm} km
-            </option>
-          ))}
-        </select>
-        <Gauge className="absolute left-3 top-1/2 -translate-y-1/2 w-3.5 h-3.5 pointer-events-none" style={{ color: 'var(--gd-text-2)' }} />
-        <ChevronDown className="absolute right-2.5 top-1/2 -translate-y-1/2 w-3 h-3 pointer-events-none" style={{ color: 'var(--gd-text-3)' }} />
+        <Gauge className="w-3.5 h-3.5" style={{ color: 'var(--gd-text-2)' }} />
+        <div className="flex flex-col items-start leading-[1.15]">
+          <div className="text-[12px] font-medium" style={{ letterSpacing: '-0.005em' }}>
+            {vehicle.name}{' '}
+            <span style={{ color: 'var(--gd-text-3)', fontWeight: 400 }}>{abbrevTrim(vehicle.trim)}</span>
           </div>
+          <div className="text-[10px] num" style={{ color: 'var(--gd-text-3)' }}>{vehicle.rangeKm} km</div>
+        </div>
+        <ChevronDown className="w-3 h-3" style={{ color: 'var(--gd-text-3)' }} />
+      </button>
 
       <ChipButton onClick={() => onOpenGpx()}>
         <Download className="w-3.5 h-3.5" style={{ color: 'var(--gd-text-2)' }} />
@@ -1190,7 +1260,9 @@ export default function TeslaTripPlanner() {
   const [chips, setChips] = useState<string[]>([]);
   const [thinking, setThinking] = useState(false);
   const [itinerary, setItinerary] = useState<Itinerary>(EMPTY_ITINERARY);
-  const [vehicle, setVehicle] = useState(VEHICLES[0]);
+  const [vehicle, setVehicle] = useState<Vehicle>(DEFAULT_VEHICLE);
+  const [vehiclePanelOpen, setVehiclePanelOpen] = useState(false);
+  const [vehicleAnchor, setVehicleAnchor] = useState<DOMRect | null>(null);
   const [grokStatus, setGrokStatus] = useState<{ label?: string }>({ label: 'Local Heavy' });
   const [legs, setLegs] = useState<Leg[]>([]);
   const [activeStopId, setActiveStopId] = useState<string | null>(null);
@@ -1467,7 +1539,8 @@ export default function TeslaTripPlanner() {
           chatInput={chatInput} setChatInput={setChatInput}
           onChatSubmit={() => sendMessage(chatInput)}
           chips={chips} onRemoveChip={(i) => setChips(chips.filter((_, idx) => idx !== i))}
-          vehicle={vehicle} onVehicleChange={setVehicle}
+          vehicle={vehicle}
+          onOpenVehiclePanel={(rect) => { setVehicleAnchor(rect); setVehiclePanelOpen(true); }}
           grokStatus={grokStatus}
           onOpenGpx={() => setModal({ kind: 'gpx' })}
         />
@@ -1752,6 +1825,14 @@ export default function TeslaTripPlanner() {
       {modal?.kind === 'gpx' && (
         <GpxExportModal itinerary={itinerary} onClose={() => setModal(null)} />
       )}
+
+      <VehicleSelectorPanel
+        open={vehiclePanelOpen}
+        anchorRect={vehicleAnchor}
+        selected={vehicle}
+        onSelect={setVehicle}
+        onClose={() => setVehiclePanelOpen(false)}
+      />
     </ErrorBoundary>
   );
 }
@@ -2510,6 +2591,157 @@ function GpxExportModal({ itinerary, onClose }: { itinerary: Itinerary; onClose:
   );
 }
 
+// ─── Vehicle selector panel ──────────────────────────────────────────────────
+function VehicleSelectorPanel({
+  open, anchorRect, selected, onSelect, onClose,
+}: {
+  open: boolean;
+  anchorRect: DOMRect | null;
+  selected: Vehicle;
+  onSelect: (v: Vehicle) => void;
+  onClose: () => void;
+}) {
+  const [chargePct, setChargePct] = React.useState(80);
+  React.useEffect(() => {
+    const onKey = (e: KeyboardEvent) => { if (e.key === 'Escape') onClose(); };
+    window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, [onClose]);
+  if (!open || !anchorRect) return null;
+  const panelWidth = 460;
+  const left = Math.max(12, Math.min(window.innerWidth - panelWidth - 12, anchorRect.right - panelWidth));
+  const top = anchorRect.bottom + 8;
+
+  const pick = (m: VehicleModel, t: VehicleTrim) => {
+    onSelect({
+      modelId: m.id, trimId: t.id, name: m.name, trim: t.name,
+      rangeKm: t.rangeKm, kw: t.kw, sec0to60: t.sec0to60, topKmh: t.topKmh, badge: t.badge,
+    });
+    onClose();
+  };
+
+  return (
+    <>
+      <div className="fixed inset-0 z-40" onClick={onClose} />
+      <div
+        className="fixed z-50 overflow-hidden"
+        style={{
+          left, top, width: panelWidth, maxHeight: '78vh',
+          background: 'rgba(20,20,24,0.96)',
+          backdropFilter: 'blur(18px)',
+          border: '1px solid var(--gd-border-2)',
+          borderRadius: 14,
+          boxShadow: '0 24px 60px rgba(0,0,0,0.5)',
+          display: 'flex', flexDirection: 'column',
+        }}
+      >
+        {/* Header with starting-charge slider */}
+        <div className="px-4 py-3.5 flex-shrink-0" style={{ borderBottom: '1px solid var(--gd-border)' }}>
+          <div className="flex items-center justify-between mb-2.5">
+            <div className="text-[11px] uppercase tracking-wider" style={{ color: 'var(--gd-text-3)' }}>
+              Starting charge
+            </div>
+            <div className="text-[12px] num" style={{ color: 'var(--gd-text)' }}>
+              {chargePct}% · <span className="num" style={{ color: 'var(--gd-green)' }}>
+                {Math.round(selected.rangeKm * chargePct / 100)} km
+              </span>
+            </div>
+          </div>
+          <div className="relative h-4">
+            <input
+              type="range" min={10} max={100} step={5} value={chargePct}
+              onChange={(e) => setChargePct(parseInt(e.target.value))}
+              className="absolute inset-0 w-full opacity-0 cursor-pointer z-10"
+            />
+            <div className="absolute top-1.5 left-0 right-0 h-1 rounded" style={{ background: 'var(--gd-border)' }} />
+            <div className="absolute top-1.5 left-0 h-1 rounded" style={{ width: `${chargePct}%`, background: 'var(--gd-green)' }} />
+            <div
+              className="absolute top-0 w-4 h-4 rounded-full"
+              style={{ left: `calc(${chargePct}% - 8px)`, background: '#fff', border: '3px solid var(--gd-green)' }}
+            />
+          </div>
+        </div>
+
+        {/* Model + trim list */}
+        <div className="overflow-y-auto px-2 py-2 flex-1 min-h-0">
+          {TESLA_MODELS.map(m => (
+            <ModelGroup
+              key={m.id}
+              model={m}
+              selected={selected}
+              chargePct={chargePct}
+              onPick={(t) => pick(m, t)}
+            />
+          ))}
+        </div>
+      </div>
+    </>
+  );
+}
+
+function ModelGroup({ model, selected, chargePct, onPick }: {
+  model: VehicleModel; selected: Vehicle; chargePct: number; onPick: (t: VehicleTrim) => void;
+}) {
+  const isExpanded = model.id === selected.modelId;
+  const [open, setOpen] = React.useState(isExpanded);
+  return (
+    <div className="mb-1.5">
+      <button
+        onClick={() => setOpen(o => !o)}
+        className="w-full flex items-center gap-3 px-3 py-2.5 rounded-lg hover:bg-white/[0.04] transition"
+      >
+        <div className="text-[14px] font-medium flex-1 text-left">{model.name}</div>
+        <div className="text-[11px]" style={{ color: 'var(--gd-text-3)' }}>{model.description}</div>
+        {open ? <ChevronUp className="w-3.5 h-3.5" style={{ color: 'var(--gd-text-3)' }} /> : <ChevronDown className="w-3.5 h-3.5" style={{ color: 'var(--gd-text-3)' }} />}
+      </button>
+      {open && (
+        <div className="pl-3 pr-1 pb-1 space-y-1">
+          {model.trims.map(t => {
+            const isSel = model.id === selected.modelId && t.id === selected.trimId;
+            const kmNow = Math.round(t.rangeKm * chargePct / 100);
+            return (
+              <button
+                key={t.id}
+                onClick={() => onPick(t)}
+                className="w-full text-left p-2.5 rounded-lg transition"
+                style={{
+                  background: isSel ? 'var(--gd-red-soft)' : 'transparent',
+                  border: `1px solid ${isSel ? 'var(--gd-red-line)' : 'var(--gd-border)'}`,
+                }}
+              >
+                <div className="flex items-center gap-2 flex-wrap">
+                  <div className="text-[13px] font-medium">{t.name}</div>
+                  {t.badge && (
+                    <span
+                      className="text-[9px] font-semibold tracking-wider px-1.5 py-0.5 rounded-full"
+                      style={{
+                        color: t.badge === 'Performance' ? 'var(--gd-amber)' : 'var(--gd-blue)',
+                        border: `1px solid ${t.badge === 'Performance' ? 'rgba(251,191,36,0.4)' : 'rgba(96,165,250,0.4)'}`,
+                      }}
+                    >
+                      {t.badge}
+                    </span>
+                  )}
+                  <div className="flex-1" />
+                  {isSel && (
+                    <span className="text-[9.5px] font-semibold tracking-wider" style={{ color: 'var(--gd-red)' }}>SELECTED</span>
+                  )}
+                </div>
+                <div className="flex gap-3.5 mt-1.5 text-[10.5px] num" style={{ color: 'var(--gd-text-3)' }}>
+                  <span>{t.rangeKm} km full</span>
+                  <span style={{ color: 'var(--gd-green)' }}>{kmNow} km now</span>
+                  <span>0–100 in {t.sec0to60}s</span>
+                  <span>{t.kw} kW peak</span>
+                </div>
+              </button>
+            );
+          })}
+        </div>
+      )}
+    </div>
+  );
+}
+
 function CheckRow({ label, value, onChange }: { label: string; value: boolean; onChange: (v: boolean) => void }) {
   return (
     <label className="flex items-center gap-2 py-1.5 text-[12px] cursor-pointer" style={{ color: 'var(--gd-text-2)' }}>