root = Card([header, bio, messageSection])
header = CardHeader("Alex Rivera", "Senior Product Designer")
bio = TextContent("Alex is a product designer with 8 years of experience across fintech and SaaS. They lead design for the mobile app team and are passionate about accessible, human-centered interfaces. Outside of work, Alex mentors junior designers and contributes to open-source design systems.")
messageSection = Card([messageHeading, messageForm], "sunk")
messageHeading = Heading("Send a message", "h3")
messageForm = Form("message-form", formButtons, [subjectField, messageField])
subjectField = FormControl("Subject", subjectInput)
subjectInput = Input("subject", "What is this about?")
messageField = FormControl("Message", messageArea, "Alex will receive this directly")
messageArea = TextArea("message", "Write your message...", 5)
formButtons = Buttons([sendBtn])
sendBtn = Button("Send message", null, "primary")