Device: iPhone w/ Dynamic Island, 290×590, radius 48
Bezel: #1c1c1e, ring #2a2a2c, side buttons inset
Island: 110×32, #000, top: 8, centered
Status bar: 9:41, signal/wifi/battery, tinted #075e54 to flow into WA header
WA header: #075e54, back chevron, avatar, video + call icons
Chat bg: #efeae2 with subtle dot texture
Bubbles: in #fff · out #d9fdd3 · ticks #53bdeb
Quick replies: white pills, gray-200 border
Composer: #f0f2f5 with #00a884 send
Home indicator: 100×4 pill, #1c1c1e
Emoji: allowed inside chat content (👋 🛒 ✓)