Cover-crop images to fill stamp area regardless of aspect ratio

app.py

@@ -96,15 +96,23 @@ def build_stamp(arr, color_name, style, label):
     aw, ah = W - 2*BRD, H - 2*BRD - LH - 8
 
     photo = Image.fromarray(arr).convert("RGB")
-    photo.thumbnail((aw, ah), Image.LANCZOS)
+    # Cover crop: scale to fill aw×ah, then center crop
+    src_ratio = photo.width / photo.height
+    area_ratio = aw / ah
+    if src_ratio > area_ratio:
+        new_h, new_w = ah, int(photo.width * ah / photo.height)
+    else:
+        new_w, new_h = aw, int(photo.height * aw / photo.width)
+    photo = photo.resize((new_w, new_h), Image.LANCZOS)
+    left, top = (new_w - aw) // 2, (new_h - ah) // 2
+    photo = photo.crop((left, top, left + aw, top + ah))
     photo = stylize(photo, style, hex_c)
 
     stamp = Image.new("RGBA", (W, H), (r, g, b, 255))
     draw  = ImageDraw.Draw(stamp)
     draw.rectangle([BRD-4, BRD-4, W-BRD+3, H-BRD+3], fill=(255,255,255,255))
 
-    px, py = BRD + (aw - photo.width)//2, BRD + 4
-    stamp.paste(photo.convert("RGBA"), (px, py))
+    stamp.paste(photo.convert("RGBA"), (BRD, BRD + 4))
 
     if label.strip():
         font = load_font(11)
@@ -408,6 +416,7 @@ span.svelte-radiogroup,
 .color-pick .wrap label:nth-child(7)::before { background: #66BB6A !important; }
 
 /* ─── Radio: style pills ─── */
+.style-pick { padding-bottom: 12px !important; }
 .style-pick .wrap { display: flex !important; gap: 6px !important; flex-wrap: wrap !important; }
 .style-pick .wrap label {
     padding: 5px 14px !important;
@@ -569,7 +578,7 @@ SECTION_DIVIDER = """
 """
 
 CONTROLS_HEADER = """
-<div style="font-family:'Space Mono',monospace;font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:#3D2E1E;margin-bottom:20px;margin-top:8px;">
+<div style="font-family:'Space Mono',monospace;font-size:.6rem;letter-spacing:.18em;text-transform:uppercase;color:#3D2E1E;margin-bottom:20px;margin-top:28px;">
   ── studio controls ──
 </div>
 """