feat: multi-method payment modal with tip presets and price overrides

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

frontend/src/lib/components/payments/PaymentModal.svelte

@@ -4,7 +4,8 @@
 	import { Button } from '$lib/components/ui/button';
 	import { Input } from '$lib/components/ui/input';
 	import { Checkbox } from '$lib/components/ui/checkbox';
-	import type { Booking } from '$lib/types/booking';
+	import type { Booking, BookingService } from '$lib/types/booking';
+	import { authStore } from '$lib/stores/auth.svelte';
 
 	interface Props {
 		booking: Booking;
@@ -14,7 +15,7 @@
 
 	let { booking, onClose, onComplete }: Props = $props();
 
-	type PaymentStatus = 'idle' | 'processing' | 'polling' | 'success' | 'error';
+	type PaymentStatus = 'idle' | 'selecting' | 'card-processing' | 'card-polling' | 'cash-entering' | 'cash-confirming' | 'gift-entering' | 'gift-confirming' | 'success' | 'error';
 
 	type PaymentResult = {
 		checkout_id: string;
@@ -24,18 +25,127 @@
 		amount: number;
 	};
 
+	type PaymentMethod = 'card' | 'cash' | 'giftcard' | null;
+
 	let status = $state<PaymentStatus>('idle');
+	let selectedMethod = $state<PaymentMethod>(null);
 	let checkoutId = $state<string | null>(null);
 	let paymentResult = $state<PaymentResult | null>(null);
 	let error = $state<string | null>(null);
-	let amount = $derived(booking.total_amount);
+
-	let overrideAmount = $state<string>('');
+	type ServiceOverride = {
+		price: string;
+		originalPrice: number;
+	};
+
+	let serviceOverrides = $state<Record<string, ServiceOverride>>({});
+
+	$effect(() => {
+		const services = booking.services ?? [];
+		const overrides: Record<string, ServiceOverride> = {};
+		for (const s of services) {
+			const price = s.override_price ?? s.price ?? 0;
+			overrides[s.service_id] = {
+				price: price.toFixed(2),
+				originalPrice: s.price ?? 0
+			};
+		}
+		serviceOverrides = overrides;
+	});
+
+	function handlePriceInput(serviceId: string, value: string) {
+		const cleaned = value.replace(/[^0-9.]/g, '');
+		const firstDot = cleaned.indexOf('.');
+		let sanitized: string;
+		if (firstDot !== -1) {
+			const integerPart = cleaned.substring(0, firstDot);
+			const decimalPart = cleaned.substring(firstDot + 1).replace(/\./g, '');
+			sanitized = integerPart + '.' + decimalPart;
+		} else {
+			sanitized = cleaned;
+		}
+		if (/^\d+(\.\d{0,2})?$/.test(sanitized) || sanitized === '') {
+			serviceOverrides = {
+				...serviceOverrides,
+				[serviceId]: {
+					...serviceOverrides[serviceId],
+					price: sanitized
+				}
+			};
+		}
+	}
+
 	let tipEnabled = $state(false);
+	let selectedTipPercent = $state<number | null>(null);
+	let customTipAmount = $state<string>('');
 
 	let pollingInterval: ReturnType<typeof setInterval> | null = null;
 
-	// Calculate total with tip
+	let tipPercentages = $derived.by(() => {
-	let totalWithTip = $derived(tipEnabled ? amount * 1.1 : amount);
+		if (subtotal <= 0) return [];
+		return [
+			{ pct: 10, amount: Math.round(subtotal * 0.10 * 100) / 100 },
+			{ pct: 15, amount: Math.round(subtotal * 0.15 * 100) / 100 },
+			{ pct: 20, amount: Math.round(subtotal * 0.20 * 100) / 100 },
+		];
+	});
+
+	function selectTipPercent(percent: number) {
+		selectedTipPercent = percent;
+		customTipAmount = '';
+		tipEnabled = true;
+	}
+
+	function handleCustomTipInput(e: Event) {
+		const input = e.target as HTMLInputElement;
+		const cleaned = input.value.replace(/[^0-9.]/g, '');
+		const firstDot = cleaned.indexOf('.');
+		let sanitized: string;
+		if (firstDot !== -1) {
+			const integerPart = cleaned.substring(0, firstDot);
+			const decimalPart = cleaned.substring(firstDot + 1).replace(/\./g, '');
+			sanitized = integerPart + '.' + decimalPart;
+		} else {
+			sanitized = cleaned;
+		}
+		if (/^\d+(\.\d{0,2})?$/.test(sanitized) || sanitized === '') {
+			customTipAmount = sanitized;
+		}
+		selectedTipPercent = null;
+		tipEnabled = customTipAmount !== '' && parseFloat(customTipAmount) > 0;
+	}
+
+	function getServicePrice(service: BookingService): number {
+		const override = serviceOverrides[service.service_id];
+		if (override && override.price !== '') {
+			const parsed = parseFloat(override.price);
+			if (!isNaN(parsed) && parsed > 0) return parsed;
+		}
+		return service.override_price ?? service.price ?? 0;
+	}
+
+	let subtotal = $derived(
+		(booking.services ?? []).reduce((sum, s) => sum + getServicePrice(s), 0)
+	);
+
+	let tipMultiplier = $derived(
+		selectedTipPercent !== null
+			? 1 + selectedTipPercent / 100
+			: customTipAmount && parseFloat(customTipAmount) > 0
+				? 1 + parseFloat(customTipAmount) / subtotal
+				: 1
+	);
+
+	let totalWithTip = $derived(tipEnabled ? subtotal * tipMultiplier : subtotal);
+	let tipDisplay = $derived(
+		selectedTipPercent !== null
+			? `${selectedTipPercent}%`
+			: customTipAmount && parseFloat(customTipAmount) > 0
+				? `£${parseFloat(customTipAmount).toFixed(2)}`
+				: ''
+	);
+
+	let totalDue = $derived(tipEnabled ? totalWithTip : subtotal);
 
 	function formatCurrency(value: number): string {
 		return new Intl.NumberFormat('en-GB', {
@@ -44,24 +154,24 @@
 		}).format(value);
 	}
 
-	async function handleConfirmPayment() {
+	async function handleCardPayment() {
-		const finalAmount = overrideAmount ? parseFloat(overrideAmount) : totalWithTip;
+		const finalAmount = totalDue;
 
 		if (isNaN(finalAmount) || finalAmount <= 0) {
 			toast.error('Please enter a valid amount');
 			return;
 		}
 
-		status = 'processing';
+		status = 'card-processing';
 		error = null;
 
 		try {
 			const response = await fetch(`/api/admin/bookings/${booking.id}/payment`, {
 				method: 'POST',
 				headers: {
-					'Content-Type': 'application/json'
+					'Content-Type': 'application/json',
+					Authorization: `Bearer ${authStore.currentToken}`
 				},
-				credentials: 'include',
 				body: JSON.stringify({
 					amount: Math.round(finalAmount * 100),
 					payment_type: 'full',
@@ -76,7 +186,7 @@
 
 			const data = await response.json();
 			checkoutId = data.checkout_id;
-			status = 'polling';
+			status = 'card-polling';
 			startPolling();
 		} catch (err) {
 			status = 'error';
@@ -95,9 +205,9 @@
 					{
 						method: 'GET',
 						headers: {
-							'Content-Type': 'application/json'
+							'Content-Type': 'application/json',
-						},
+							Authorization: `Bearer ${authStore.currentToken}`
-						credentials: 'include'
+						}
 					}
 				);
 
@@ -122,17 +232,14 @@
 				} else if (data.status === 'FAILED') {
 					stopPolling();
 					status = 'error';
-					const errorMsg = data.error_message || 'Payment failed';
+					error = data.error_message || 'Payment failed';
-					error = errorMsg;
+					toast.error(error as string);
-					toast.error(errorMsg as string);
 				}
-				// PENDING - continue polling
 			} catch (err) {
 				stopPolling();
 				status = 'error';
-				const errorMsg = 'Failed to check payment status';
+				error = 'Failed to check payment status';
-				error = errorMsg;
+				toast.error(error);
-				toast.error(errorMsg);
 			}
 		}, 2000);
 	}
@@ -144,126 +251,472 @@
 		}
 	}
 
-	function handleRetry() {
-		status = 'idle';
-		checkoutId = null;
-		error = null;
-	}
-
 	function handleClose() {
 		stopPolling();
 		onClose();
 	}
 
-	// Cleanup on unmount
+	function resetToSelect() {
+		stopPolling();
+		status = 'idle';
+		selectedMethod = null;
+		checkoutId = null;
+		error = null;
+	}
+
 	$effect(() => {
 		return () => {
 			stopPolling();
 		};
 	});
+
+	let cashAmount = $state<string>('');
+	let cashAmountNum = $derived(cashAmount === '' ? 0 : parseFloat(cashAmount));
+	let changeDue = $derived(cashAmountNum > totalDue ? cashAmountNum - totalDue : 0);
+	let extraAsTip = $state(false);
+
+	function handleCashInput(e: Event) {
+		const input = e.target as HTMLInputElement;
+		const cleaned = input.value.replace(/[^0-9.]/g, '');
+		const firstDot = cleaned.indexOf('.');
+		let sanitized: string;
+		if (firstDot !== -1) {
+			const integerPart = cleaned.substring(0, firstDot);
+			const decimalPart = cleaned.substring(firstDot + 1).replace(/\./g, '');
+			sanitized = integerPart + '.' + decimalPart;
+		} else {
+			sanitized = cleaned;
+		}
+		if (/^\d+(\.\d{0,2})?$/.test(sanitized) || sanitized === '') {
+			cashAmount = sanitized;
+		}
+	}
+
+	async function handleCashPayment() {
+		if (cashAmountNum < totalDue) {
+			toast.error('Cash amount must cover the total');
+			return;
+		}
+
+		const tipAmount = extraAsTip ? cashAmountNum - totalDue : 0;
+
+		status = 'cash-confirming';
+		error = null;
+
+		try {
+			const body: Record<string, unknown> = {
+				amount: Math.round(totalDue * 100),
+				payment_type: 'full',
+				payment_method: 'cash'
+			};
+			if (tipAmount > 0) {
+				body.tip_enabled = true;
+				body.tip_amount = Math.round(tipAmount * 100);
+			}
+
+			const response = await fetch(`/api/admin/bookings/${booking.id}/payment`, {
+				method: 'POST',
+				headers: {
+					'Content-Type': 'application/json',
+					Authorization: `Bearer ${authStore.currentToken}`
+				},
+				body: JSON.stringify(body)
+			});
+
+			if (!response.ok) {
+				const errData = await response.text();
+				throw new Error(errData || 'Failed to process payment');
+			}
+
+			const data = await response.json();
+			status = 'success';
+			paymentResult = {
+				checkout_id: data.checkout_id || data.id || '',
+				status: 'COMPLETED',
+				amount: data.amount
+			};
+			toast.success('Cash payment recorded');
+			onComplete(paymentResult);
+		} catch (err) {
+			status = 'error';
+			error = err instanceof Error ? err.message : 'Failed to process payment';
+			toast.error(error ?? 'Unknown error');
+		}
+	}
+
+	let giftCardId = $state('');
+
+	function formatGiftCardId(value: string): string {
+		const digits = value.replace(/\D/g, '').substring(0, 12);
+		const groups = digits.match(/.{1,4}/g);
+		return groups ? groups.join(' ') : digits;
+	}
+
+	function handleGiftCardInput(e: Event) {
+		const input = e.target as HTMLInputElement;
+		giftCardId = formatGiftCardId(input.value);
+	}
+
+	let giftCardValid = $derived(giftCardId.replace(/\s/g, '').length === 12);
+
+	async function handleGiftCardPayment() {
+		if (!giftCardValid) {
+			toast.error('Please enter a valid 12-digit gift card ID');
+			return;
+		}
+
+		status = 'gift-confirming';
+		error = null;
+
+		try {
+			const response = await fetch(`/api/admin/bookings/${booking.id}/payment`, {
+				method: 'POST',
+				headers: {
+					'Content-Type': 'application/json',
+					Authorization: `Bearer ${authStore.currentToken}`
+				},
+				body: JSON.stringify({
+					amount: 1000,
+					payment_type: 'full',
+					payment_method: 'giftcard',
+					gift_card_id: giftCardId.replace(/\s/g, '')
+				})
+			});
+
+			if (!response.ok) {
+				const errData = await response.text();
+				throw new Error(errData || 'Failed to process gift card');
+			}
+
+			const data = await response.json();
+			status = 'success';
+			paymentResult = {
+				checkout_id: data.checkout_id || data.id || '',
+				status: 'COMPLETED',
+				amount: data.amount
+			};
+			toast.success('Gift card payment recorded');
+			onComplete(paymentResult);
+		} catch (err) {
+			status = 'error';
+			error = err instanceof Error ? err.message : 'Failed to process gift card';
+			toast.error(error ?? 'Unknown error');
+		}
+	}
+
+	$effect(() => {
+		if (selectedMethod === 'cash') {
+			cashAmount = totalDue.toFixed(2);
+			extraAsTip = false;
+		}
+		if (selectedMethod === 'giftcard') {
+			giftCardId = '';
+		}
+	});
 </script>
 
-<Dialog.Root open={true} onOpenChange={(open) => !open && handleClose()}>
+<Dialog.Root open={true} onOpenChange={(open) => !open && handleClose()} onOpenAutoFocus={(e) => e.preventDefault()}>
-	<Dialog.Content class="max-w-md">
+	<Dialog.Content class="max-w-lg max-h-[90vh] overflow-y-auto">
 		<Dialog.Header>
 			<Dialog.Title class="text-xl font-semibold">Take Payment</Dialog.Title>
 		</Dialog.Header>
 
-		{#if status === 'idle' || status === 'processing' || status === 'error'}
+		{#if status === 'idle'}
 			<div class="space-y-4">
-				<!-- Service Breakdown -->
 				<div class="rounded-md border border-gray-200 bg-gray-50 p-4">
 					<div class="mb-3 text-sm font-semibold text-gray-700">Services</div>
-					<div class="space-y-2">
+					<div class="grid grid-cols-1 {(booking.services?.length ?? 0) > 1 ? 'sm:grid-cols-2' : ''} gap-3">
-						{#each booking.services ?? [] as service, index (index)}
+						{#each booking.services ?? [] as service, i (service.service_id ?? `svc-${i}`)}
-							<div class="flex justify-between text-sm">
+							<div class="rounded-lg border bg-white p-3">
-								<span class="text-gray-600">{service.service_name || 'Unknown Service'}</span>
+								<div class="mb-2 font-medium text-sm">{service.service_name || 'Unknown Service'}</div>
-								<span class="font-medium">
+								<div class="flex items-center gap-2">
-									{service.price ? formatCurrency(service.price) : '-'}
+									<span class="text-xs text-gray-500">£</span>
+									<input
+										type="text"
+										inputmode="decimal"
+										tabindex="-1"
+										class="flex h-8 w-24 rounded-md border border-input bg-background px-2 py-1 text-sm ring-offset-background focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:outline-none"
+										value={serviceOverrides[service.service_id]?.price ?? (service.price?.toFixed(2) ?? '0.00')}
+										oninput={(e) => handlePriceInput(service.service_id, e.currentTarget.value)}
+									/>
+									{#if serviceOverrides[service.service_id] && Math.abs(parseFloat(serviceOverrides[service.service_id].price) - serviceOverrides[service.service_id].originalPrice) > 0.01}
+										<span class="text-xs text-amber-600">
+											(was £{serviceOverrides[service.service_id].originalPrice.toFixed(2)})
 										</span>
+									{/if}
+								</div>
 							</div>
 						{/each}
 					</div>
 				</div>
 
-				<!-- Total Amount -->
 				<div class="flex justify-between rounded-md border border-gray-200 bg-white p-4">
 					<span class="text-base font-semibold text-gray-700">Total</span>
-					<span class="text-xl font-bold text-gray-900">{formatCurrency(amount)}</span>
+					<span class="text-xl font-bold text-gray-900">{formatCurrency(subtotal)}</span>
-				</div>
-
-				<!-- Price Override -->
-				<div class="space-y-2">
-					<label for="override-amount" class="text-sm font-medium text-gray-700">
-						Override Amount (optional)
-					</label>
-					<Input
-						id="override-amount"
-						type="number"
-						step="0.01"
-						placeholder="Leave empty to use total"
-						bind:value={overrideAmount}
-						disabled={status === 'processing'}
-					/>
-				</div>
-
-				<!-- Tip Toggle -->
-				<div class="flex items-center gap-3">
-					<Checkbox
-						id="tip-enabled"
-						bind:checked={tipEnabled}
-						disabled={status === 'processing'}
-					/>
-					<label for="tip-enabled" class="text-sm text-gray-700">
-						Add 10% tip ({formatCurrency(amount * 0.1)})
-					</label>
 				</div>
 
 				{#if tipEnabled}
 					<div class="flex justify-between rounded-md border border-green-200 bg-green-50 p-3">
-						<span class="text-sm font-medium text-green-800">Total with Tip</span>
+						<span class="text-sm font-medium text-green-800">
+							Total with Tip ({tipDisplay})
+						</span>
 						<span class="text-lg font-bold text-green-800">
 							{formatCurrency(totalWithTip)}
 						</span>
 					</div>
 				{/if}
 
-				{#if status === 'error' && error}
+				<div class="grid grid-cols-2 gap-3 sm:grid-cols-3">
-					<div class="rounded-md border border-red-200 bg-red-50 p-3">
+					<button
-						<p class="text-sm text-red-800">{error}</p>
+						type="button"
+						class="rounded-lg border py-6 text-center text-sm font-semibold transition-colors {selectedMethod === 'card' ? 'border-input bg-fuchsia-100 text-foreground' : 'border-input hover:bg-fuchsia-50'}"
+						onclick={() => { selectedMethod = 'card'; status = 'selecting'; }}
+					>
+						<svg class="mx-auto mb-2 h-8 w-8" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+							<rect x="1" y="4" width="22" height="16" rx="2" ry="2" />
+							<line x1="1" y1="10" x2="23" y2="10" />
+						</svg>
+						Card
+					</button>
+					<button
+						type="button"
+						class="rounded-lg border py-6 text-center text-sm font-semibold transition-colors {selectedMethod === 'cash' ? 'border-input bg-fuchsia-100 text-foreground' : 'border-input hover:bg-fuchsia-50'}"
+						onclick={() => { selectedMethod = 'cash'; status = 'cash-entering'; }}
+					>
+						<svg class="mx-auto mb-2 h-8 w-8" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+							<line x1="12" y1="1" x2="12" y2="23" />
+							<path d="M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6" />
+						</svg>
+						Cash
+					</button>
+					<button
+						type="button"
+						class="hidden rounded-lg border py-6 text-center text-sm font-semibold transition-colors sm:block {selectedMethod === 'giftcard' ? 'border-input bg-fuchsia-100 text-foreground' : 'border-input hover:bg-fuchsia-50'}"
+						onclick={() => { selectedMethod = 'giftcard'; status = 'gift-entering'; }}
+					>
+						<svg class="mx-auto mb-2 h-8 w-8" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+							<polyline points="20 12 20 22 4 22 4 12" />
+							<rect x="2" y="7" width="20" height="5" />
+							<line x1="12" y1="22" x2="12" y2="7" />
+							<path d="M12 7H7.5a2.5 2.5 0 0 1 0-5C11 2 12 7 12 7z" />
+							<path d="M12 7h4.5a2.5 2.5 0 0 0 0-5C13 2 12 7 12 7z" />
+						</svg>
+						Gift Card
+					</button>
+				</div>
+
+				<div class="sm:hidden">
+					<button
+						type="button"
+						class="text-sm text-gray-600 underline hover:text-gray-900"
+						onclick={() => { selectedMethod = 'giftcard'; status = 'gift-entering'; }}
+					>
+						Pay with Gift Card
+					</button>
 				</div>
-					<Button variant="outline" onclick={handleRetry} class="w-full">
-						Try Again
-					</Button>
-				{/if}
 
-				<!-- Actions -->
 				<div class="flex gap-3">
-					<Button variant="outline" onclick={handleClose} class="flex-1" disabled={status === 'processing'}>
+					<Button variant="ghost" onclick={handleClose} class="flex-1">
 						Cancel
 					</Button>
-					<Button
+				</div>
-						onclick={handleConfirmPayment}
+			</div>
-						class="flex-1 bg-green-600 hover:bg-green-700"
+
-						loading={status === 'processing'}
+		{:else if status === 'selecting'}
-						disabled={status === 'processing'}
+			<div class="space-y-4">
+				<div class="flex justify-between rounded-md border border-gray-200 bg-white p-4">
+					<span class="text-base font-semibold text-gray-700">Total</span>
+					<span class="text-xl font-bold text-gray-900">{formatCurrency(totalDue)}</span>
+				</div>
+
+				<div class="space-y-3">
+					<span class="text-sm font-medium text-gray-700">Add a Tip</span>
+					<div class="grid grid-cols-3 gap-2">
+						{#each tipPercentages as tip (tip.pct)}
+							<button
+								type="button"
+								class="rounded-lg border py-3 text-center text-sm font-semibold transition-colors hover:bg-fuchsia-50 {selectedTipPercent ===
+								tip.pct
+								? 'border-input bg-fuchsia-100 text-foreground'
+								: 'border-input'}"
+								onclick={() => selectTipPercent(tip.pct)}
 							>
-						Confirm Payment
+								<div>{tip.pct}%</div>
+								<div class="text-xs font-normal text-gray-500">£{tip.amount.toFixed(2)}</div>
+							</button>
+						{/each}
+					</div>
+					<div class="relative">
+						<span class="absolute left-3 top-1/2 -translate-y-1/2 text-gray-500">£</span>
+						<Input
+							type="text"
+							inputmode="decimal"
+							tabindex="-1"
+							placeholder="Custom tip amount"
+							value={customTipAmount}
+							oninput={handleCustomTipInput}
+							class="pl-7"
+						/>
+					</div>
+				</div>
+
+				{#if tipEnabled}
+					<div class="flex justify-between rounded-md border border-green-200 bg-green-50 p-3">
+						<span class="text-sm font-medium text-green-800">
+							Total with Tip ({tipDisplay})
+						</span>
+						<span class="text-lg font-bold text-green-800">
+							{formatCurrency(totalWithTip)}
+						</span>
+					</div>
+				{/if}
+
+				<div class="flex gap-3">
+					<Button variant="ghost" onclick={resetToSelect} class="flex-1">
+						Back
+					</Button>
+					<Button
+						onclick={handleCardPayment}
+						class="flex-1 bg-green-600 hover:bg-green-700"
+					>
+						Charge Card
 					</Button>
 				</div>
 			</div>
-		{:else if status === 'polling'}
+
-			<!-- Polling State -->
+		{:else if status === 'card-processing' || status === 'card-polling'}
 			<div class="flex flex-col items-center justify-center py-8">
 				<div class="mb-4 h-12 w-12 animate-spin rounded-full border-4 border-gray-200 border-t-green-600"></div>
 				<p class="text-lg font-medium text-gray-700">Waiting for customer to tap card...</p>
 				<p class="mt-2 text-sm text-gray-500">This may take a few moments</p>
-				<Button variant="outline" onclick={handleClose} class="mt-6">
+			</div>
-					Cancel
+
+		{:else if status === 'cash-entering'}
+			<div class="space-y-4">
+				<div class="flex justify-between rounded-md border border-gray-200 bg-white p-4">
+					<span class="text-base font-semibold text-gray-700">Total Due</span>
+					<span class="text-xl font-bold text-gray-900">{formatCurrency(totalDue)}</span>
+				</div>
+
+				<div>
+					<label for="cash-amount" class="text-sm font-medium text-gray-700">
+						Cash Received
+					</label>
+					<div class="relative mt-1">
+						<span class="absolute left-3 top-1/2 -translate-y-1/2 text-gray-500">£</span>
+						<Input
+							id="cash-amount"
+							type="text"
+							inputmode="decimal"
+							tabindex="-1"
+							value={cashAmount}
+							oninput={handleCashInput}
+							class="pl-7 text-lg font-semibold"
+						/>
+					</div>
+				</div>
+
+				{#if cashAmountNum >= totalDue}
+					<div class="rounded-md border border-green-200 bg-green-50 p-4">
+						<div class="flex justify-between">
+							<span class="text-sm font-medium text-green-800">Change Due</span>
+							<span class="text-lg font-bold text-green-800">{formatCurrency(changeDue)}</span>
+						</div>
+						{#if changeDue > 0}
+							<div class="mt-2 flex items-center gap-2">
+								<Checkbox
+									id="keep-change"
+									bind:checked={extraAsTip}
+								/>
+								<label for="keep-change" class="text-sm text-green-700">
+									Keep {formatCurrency(changeDue)} as tip
+								</label>
+							</div>
+						{/if}
+					</div>
+				{/if}
+
+				<div class="flex gap-3">
+					<Button variant="ghost" onclick={resetToSelect} class="flex-1">
+						Back
+					</Button>
+					<Button
+						onclick={handleCashPayment}
+						class="flex-1 bg-green-600 hover:bg-green-700"
+						disabled={cashAmountNum < totalDue}
+					>
+						Confirm Cash
 					</Button>
 				</div>
+			</div>
+
+		{:else if status === 'cash-confirming'}
+			<div class="flex flex-col items-center justify-center py-8">
+				<div class="mb-4 h-12 w-12 animate-spin rounded-full border-4 border-gray-200 border-t-green-600"></div>
+				<p class="text-lg font-medium text-gray-700">Processing cash payment...</p>
+			</div>
+
+		{:else if status === 'gift-entering'}
+			<div class="space-y-4">
+				<div class="flex justify-between rounded-md border border-gray-200 bg-white p-4">
+					<span class="text-base font-semibold text-gray-700">Total Due</span>
+					<span class="text-xl font-bold text-gray-900">{formatCurrency(totalDue)}</span>
+				</div>
+
+				<div>
+					<label for="gift-card-id" class="text-sm font-medium text-gray-700">
+						Gift Card ID
+					</label>
+					<Input
+						id="gift-card-id"
+						type="text"
+						inputmode="text"
+						tabindex="-1"
+						value={giftCardId}
+						oninput={handleGiftCardInput}
+						placeholder="XXXX XXXX XXXX"
+						maxlength={14}
+						class="mt-1 font-mono text-lg tracking-widest"
+					/>
+					<p class="mt-1 text-xs text-gray-500">Enter the 12-digit ID printed on the gift card</p>
+				</div>
+
+				<div class="flex gap-3">
+					<Button variant="ghost" onclick={resetToSelect} class="flex-1">
+						Back
+					</Button>
+					<Button
+						onclick={handleGiftCardPayment}
+						class="flex-1 bg-green-600 hover:bg-green-700"
+						disabled={!giftCardValid}
+					>
+						Apply Gift Card
+					</Button>
+				</div>
+			</div>
+
+		{:else if status === 'gift-confirming'}
+			<div class="flex flex-col items-center justify-center py-8">
+				<div class="mb-4 h-12 w-12 animate-spin rounded-full border-4 border-gray-200 border-t-green-600"></div>
+				<p class="text-lg font-medium text-gray-700">Processing gift card...</p>
+			</div>
+
+		{:else if status === 'error' && error}
+			<div class="space-y-4">
+				<div class="rounded-md border border-red-200 bg-red-50 p-3">
+					<p class="text-sm text-red-800">{error}</p>
+				</div>
+				<div class="flex gap-3">
+					<Button variant="ghost" onclick={handleClose} class="flex-1">
+						Close
+					</Button>
+					<Button onclick={resetToSelect} class="flex-1">
+						Try Again
+					</Button>
+				</div>
+			</div>
+
 		{:else if status === 'success' && paymentResult}
-			<!-- Success State -->
 			<div class="space-y-4">
 				<div class="flex flex-col items-center justify-center py-4">
 					<div class="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-green-100">
@@ -283,7 +736,6 @@
 					<h3 class="text-xl font-semibold text-gray-900">Payment Successful</h3>
 				</div>
 
-				<!-- Receipt -->
 				<div class="rounded-md border border-gray-200 bg-gray-50 p-4">
 					<div class="space-y-3">
 						<div class="flex justify-between">