fix: pair website screenshots with color scheme

src/app/(marketing)/page.tsx

@@ -29,6 +29,7 @@ const visitMoments = [
     title: "The visit has a place to land.",
     body: "Keep the recording, transcript, and reviewed summary together instead of reconstructing the appointment from memory.",
     image: "/screenshots/pitch/visits-natural.webp",
+    darkImage: "/screenshots/pitch/visits-natural-dark.webp",
     alt: "Medscribe Visits screen in a natural titanium iPhone product bezel",
   },
   {
@@ -37,6 +38,7 @@ const visitMoments = [
     title: "Go back to what was actually said.",
     body: "Search the local transcript and compare it with the generated summary before anything becomes part of the record you rely on.",
     image: "/screenshots/pitch/transcript-black.webp",
+    darkImage: "/screenshots/pitch/transcript-black-dark.webp",
     alt: "Medscribe visit transcript in a black titanium iPhone product bezel",
   },
   {
@@ -45,6 +47,7 @@ const visitMoments = [
     title: "Review the useful part. Keep the uncertainty.",
     body: "Medications, follow-ups, diagnoses, and instructions are prepared on-device. Suggestions remain suggestions until a person checks them.",
     image: "/screenshots/pitch/summary-natural.webp",
+    darkImage: "/screenshots/pitch/summary-natural-dark.webp",
     alt: "Medscribe appointment summary in a natural titanium iPhone product bezel",
   },
 ] as const;
@@ -126,6 +129,7 @@ export default function HomePage() {
           <div className="absolute top-24 left-1/2 w-[17rem] -translate-x-[86%] -rotate-6 sm:top-28 sm:w-[22rem] lg:top-32 lg:w-[26rem]">
             <ProductDevice
               src="/screenshots/pitch/summary-natural.webp"
+              darkSrc="/screenshots/pitch/summary-natural-dark.webp"
               alt="Medscribe visit summary in a natural titanium iPhone product bezel"
               sizes="(min-width: 1024px) 416px, (min-width: 640px) 352px, 272px"
               priority
@@ -134,6 +138,7 @@ export default function HomePage() {
           <div className="absolute top-0 left-1/2 z-10 w-[18rem] -translate-x-[14%] rotate-5 sm:w-[23rem] lg:w-[28rem]">
             <ProductDevice
               src="/screenshots/pitch/home-black.webp"
+              darkSrc="/screenshots/pitch/home-black-dark.webp"
               alt="Medscribe home screen in a black titanium iPhone product bezel"
               sizes="(min-width: 1024px) 448px, (min-width: 640px) 368px, 288px"
               priority
@@ -210,6 +215,7 @@ export default function HomePage() {
                 <div className="relative mx-auto mt-10 w-[min(72vw,21rem)] translate-y-14">
                   <ProductDevice
                     src={moment.image}
+                    darkSrc={moment.darkImage}
                     alt={moment.alt}
                     sizes="(min-width: 1024px) 336px, (min-width: 640px) 320px, 72vw"
                   />
@@ -241,6 +247,7 @@ export default function HomePage() {
               <div className="absolute top-20 left-[4%] w-[17rem] -rotate-6 sm:w-[21rem] lg:w-[23rem]">
                 <ProductDevice
                   src="/screenshots/pitch/medication-detail-natural.webp"
+                  darkSrc="/screenshots/pitch/medication-detail-natural-dark.webp"
                   alt="Medscribe medication detail in a natural titanium iPhone product bezel"
                   sizes="(min-width: 1024px) 368px, (min-width: 640px) 336px, 272px"
                 />
@@ -248,6 +255,7 @@ export default function HomePage() {
               <div className="absolute top-0 right-[2%] z-10 w-[18rem] rotate-5 sm:w-[22rem] lg:w-[24rem]">
                 <ProductDevice
                   src="/screenshots/pitch/medications-black.webp"
+                  darkSrc="/screenshots/pitch/medications-black-dark.webp"
                   alt="Medscribe medication list in a black titanium iPhone product bezel"
                   sizes="(min-width: 1024px) 384px, (min-width: 640px) 352px, 288px"
                 />
@@ -309,6 +317,7 @@ export default function HomePage() {
           <div className="order-1 mx-auto w-[min(78vw,27rem)] lg:order-2">
             <ProductDevice
               src="/screenshots/pitch/ask-black.webp"
+              darkSrc="/screenshots/pitch/ask-black-dark.webp"
               alt="Medscribe Ask response grounded in local health context, shown in a black titanium iPhone product bezel"
               sizes="(min-width: 1024px) 432px, (min-width: 640px) 384px, 78vw"
             />
@@ -323,6 +332,7 @@ export default function HomePage() {
               <div className="bg-primary-light/70 absolute inset-[12%_-12%_8%] -z-10 rounded-[4rem] blur-2xl" />
               <ProductDevice
                 src="/screenshots/pitch/know-me-natural.webp"
+                darkSrc="/screenshots/pitch/know-me-natural-dark.webp"
                 alt="Medscribe Know Me handoff record in a natural titanium iPhone product bezel"
                 sizes="(min-width: 1024px) 448px, (min-width: 640px) 400px, 80vw"
               />

src/components/product-device.tsx

@@ -1,9 +1,10 @@
-import Image from "next/image";
+import { getImageProps } from "next/image";
 
 import { cn } from "~/lib/utils";
 
 type ProductDeviceProps = {
   src: string;
+  darkSrc?: string;
   alt: string;
   className?: string;
   sizes?: string;
@@ -17,23 +18,39 @@ type ProductDeviceProps = {
  */
 export function ProductDevice({
   src,
+  darkSrc,
   alt,
   className,
   sizes = "(min-width: 1024px) 360px, (min-width: 640px) 320px, 72vw",
   priority = false,
 }: ProductDeviceProps) {
-  return (
-    <Image
-      src={src}
-      alt={alt}
-      width={810}
-      height={1656}
-      sizes={sizes}
-      priority={priority}
-      className={cn(
+  const shared = {
+    alt,
+    width: 810,
+    height: 1656,
+    sizes,
+    priority,
+    className: cn(
       "h-auto w-full drop-shadow-[0_35px_35px_rgba(15,23,42,0.22)] dark:drop-shadow-[0_38px_42px_rgba(0,0,0,0.5)]",
       className,
-      )}
+    ),
+  };
+  const { props: lightProps } = getImageProps({ src, ...shared });
+  const darkProps = darkSrc
+    ? getImageProps({ src: darkSrc, ...shared }).props
+    : null;
+
+  return (
+    <picture className="block">
+      {darkProps ? (
+        <source
+          media="(prefers-color-scheme: dark)"
+          srcSet={darkProps.srcSet}
+          sizes={darkProps.sizes}
         />
+      ) : null}
+      {/* next/image cannot art-direct by color scheme without downloading both sources. */}
+      <img {...lightProps} alt={alt} />
+    </picture>
   );
 }