root = Card([header, taskDetails, statusSection, actionButtons], "card", "column", "m")
header = CardHeader("Focus Task", "Your single most urgent item")
taskDetails = Card([taskTitle, deadlineInfo], "clear", "column", "s")
taskTitle = Heading("Finalize Q3 Budget Proposal", "h2")
deadlineInfo = TextContent("**Deadline:** Today, 5:00 PM", "large-heavy")
statusSection = Card([statusLabel, statusBadge], "sunk", "row", "m", "center", "between")
statusLabel = TextContent("Current Status", "small-heavy")
statusBadge = Tag("In Progress", null, "lg", "warning")
actionButtons = Buttons([doneBtn], "column")
doneBtn = Button("Mark Done", ["mark_done"], "primary", "normal", "large")