Blend upload page into background

src/public/upload.css

@@ -14,43 +14,71 @@
 body {
   margin: 0;
   min-height: 100vh;
-  background: #1f1f1f;
+  background: #ffffff;
   color: var(--ink);
   font-family: "Times New Roman", "Batang", "Apple SD Gothic Neo", serif;
 }
 
 .upload-page {
-  width: min(100%, 640px);
+  width: 100%;
   min-height: 100vh;
   margin: 0 auto;
-  padding: 0 10px 16px;
-  background: #1f1f1f;
+  padding: 0;
+  background:
+    radial-gradient(circle at 50% 18%, rgba(220, 220, 214, 0.28), transparent 42%),
+    linear-gradient(180deg, #ffffff 0%, #fbfbfa 74%, #ffffff 100%);
 }
 
 .wedding-card {
-  min-height: calc(100vh - 16px);
-  padding: clamp(10px, 2vw, 18px) clamp(18px, 5vw, 36px) 34px;
+  width: min(100%, 720px);
+  min-height: 100vh;
+  margin: 0 auto;
+  padding: 0 clamp(12px, 3.6vw, 34px) 38px;
   background:
-    radial-gradient(circle at 50% 28%, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0) 34%),
-    linear-gradient(180deg, #ffffff 0%, #fbfbfa 100%);
+    radial-gradient(circle at 50% 35%, rgba(255, 255, 255, 0.7), transparent 44%),
+    linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, #fbfbfa 82%, #ffffff 100%);
   text-align: center;
 }
 
 .poster {
   position: relative;
-  width: min(100%, 560px);
+  width: min(100%, 620px);
   margin: 0 auto;
+  padding: 0 clamp(4px, 1.4vw, 10px);
+}
+
+.poster::before {
+  content: "";
+  position: absolute;
+  inset: 0;
+  z-index: 0;
+  border-radius: 0 0 22px 22px;
+  background: rgba(232, 232, 226, 0.38);
+  filter: blur(24px);
+  transform: translateY(12px) scale(0.96);
+  pointer-events: none;
 }
 
 .poster__image {
+  position: relative;
+  z-index: 1;
   display: block;
   width: 100%;
   height: auto;
-  filter: drop-shadow(0 12px 22px rgba(0, 0, 0, 0.08));
+  filter: drop-shadow(0 18px 30px rgba(88, 88, 80, 0.08));
+  -webkit-mask-image:
+    linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%),
+    linear-gradient(180deg, #000 0%, #000 88%, transparent 100%);
+  -webkit-mask-composite: source-in;
+  mask-image:
+    linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%),
+    linear-gradient(180deg, #000 0%, #000 88%, transparent 100%);
+  mask-composite: intersect;
 }
 
 .poster__plate {
   position: absolute;
+  z-index: 2;
   left: 10.5%;
   right: 10.5%;
   bottom: 11.8%;
@@ -92,8 +120,8 @@ h1 {
 }
 
 .upload-panel {
-  width: min(100%, 420px);
-  margin: clamp(18px, 4vw, 28px) auto 0;
+  width: min(100%, 430px);
+  margin: clamp(10px, 2.8vw, 20px) auto 0;
 }
 
 .upload-panel__today {
@@ -273,7 +301,7 @@ h1 {
 }
 
 .thank-you {
-  width: min(100%, 420px);
+  width: min(100%, 430px);
   margin: clamp(18px, 4vw, 28px) auto 0;
   padding: 26px 24px 28px;
   border: 1px solid rgba(137, 166, 158, 0.32);
@@ -332,14 +360,35 @@ h1 {
 
 @media (max-width: 430px) {
   .upload-page {
-    padding-left: 7px;
-    padding-right: 7px;
+    background:
+      radial-gradient(circle at 50% 14%, rgba(218, 218, 212, 0.24), transparent 44%),
+      linear-gradient(180deg, #ffffff 0%, #fbfbfa 78%, #ffffff 100%);
   }
 
   .wedding-card {
-    padding-left: 14px;
-    padding-right: 14px;
-    padding-bottom: 28px;
+    padding: 0 0 30px;
+    background:
+      radial-gradient(circle at 50% 33%, rgba(255, 255, 255, 0.66), transparent 45%),
+      linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, #fbfbfa 82%, #ffffff 100%);
+  }
+
+  .poster {
+    width: 100%;
+    padding: 0;
+  }
+
+  .poster::before {
+    inset: 0 8px;
+    filter: blur(18px);
+  }
+
+  .poster__image {
+    -webkit-mask-image:
+      linear-gradient(90deg, transparent 0%, #000 3%, #000 97%, transparent 100%),
+      linear-gradient(180deg, #000 0%, #000 89%, transparent 100%);
+    mask-image:
+      linear-gradient(90deg, transparent 0%, #000 3%, #000 97%, transparent 100%),
+      linear-gradient(180deg, #000 0%, #000 89%, transparent 100%);
   }
 
   .poster__plate {
@@ -349,11 +398,11 @@ h1 {
   }
 
   .upload-panel {
-    width: min(100%, 300px);
+    width: min(calc(100% - 48px), 340px);
   }
 
   .thank-you {
-    width: min(100%, 300px);
+    width: min(calc(100% - 48px), 340px);
   }
 
   .upload-panel__today {