Announcement

import type { ComponentProps, ReactNode } from "react";

// The parts every panel in this kit is made of. The corners of what is inside follow the panel's own.
const air = {
  focus: "outline-none focus-visible:[outline:2px_solid_var(--tui-ring)] focus-visible:[outline-offset:2px]",
};

export interface AnnouncementProps extends Omit<ComponentProps<"a">, "children"> {
  /** A quiet word at the start: New, Beta, 2.0. */
  tag?: ReactNode;
  children: ReactNode;
}

/**
 * One line of news, as a floating capsule that goes somewhere. It is built
 * like the kit's dock: a tight inset, a quiet tile at the start, and one
 * filled round at the end.
 */
export function Announcement({ tag, children, className, ...props }: AnnouncementProps) {
  return (
    <a
      data-slot="announcement"
      {...props}
      className={[
        "group inline-flex h-(--tui-announcement-height) max-w-full items-center gap-(--tui-announcement-gap) rounded-(--tui-announcement-radius) bg-(--tui-announcement-bg) p-(--tui-announcement-padding) font-(family-name:--tui-font) text-(length:--tui-announcement-font-size) leading-none font-medium text-(--tui-announcement-fg) no-underline shadow-(--tui-announcement-shadow)",
        air.focus,
        className,
      ]
        .filter(Boolean)
        .join(" ")}
    >
      {tag && (
        <span data-slot="announcement-tag" className="inline-flex h-full shrink-0 items-center rounded-[calc(var(--tui-announcement-radius)_-_var(--tui-announcement-padding))] bg-(--tui-announcement-well) px-3 text-[0.93em] text-(--tui-announcement-muted)">
          {tag}
        </span>
      )}
      <span className="truncate px-2">{children}</span>
      <span aria-hidden data-slot="announcement-arrow" className="flex aspect-square h-full shrink-0 items-center justify-center rounded-full bg-(--tui-announcement-accent) text-(--tui-announcement-accent-fg) transition-[scale] duration-(--tui-duration) group-hover:scale-105 group-active:scale-95">
        <svg aria-hidden viewBox="0 0 16 16" fill="none" stroke="currentColor" strokeWidth="1.75" strokeLinecap="round" strokeLinejoin="round" className="size-[1.05em]">
            <path d="M3.500 8h9M8.500 4l4 4-4 4" />
          </svg>
      </span>
    </a>
  );
}

:root {
  color-scheme: light;
  --tui-bg: #ffffff;
  --tui-fg: #0a0a0a;
  --tui-muted: #f5f5f5;
  --tui-muted-fg: #737373;
  --tui-border: #e5e5e5;
  --tui-primary: #171717;
  --tui-primary-fg: #fafafa;
  --tui-ring: #a3a3a3;
  --tui-success: #16a34a;
  --tui-warning: #d97706;
  --tui-danger: #dc2626;
  --tui-radius: 8px;
  --tui-border-width: 1px;
  --tui-space: 4px;
  --tui-shadow: none;
  --tui-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --tui-text: 14px;
  --tui-duration: 150ms;

  /* Announcement */
  --tui-announcement-height: calc(var(--tui-space) * 11);
  --tui-announcement-padding: calc(var(--tui-space) * 1.5);
  --tui-announcement-gap: calc(var(--tui-space) * 1);
  --tui-announcement-radius: calc(var(--tui-radius) * 6);
  --tui-announcement-font-size: var(--tui-text);
  --tui-announcement-bg: light-dark(var(--tui-bg), color-mix(in oklab, var(--tui-bg) 90%, var(--tui-fg)));
  --tui-announcement-shadow: 0 0 0 1px color-mix(in srgb, var(--tui-fg) 5%, transparent), 0 2px 6px rgb(0 0 0 / 0.04), 0 16px 40px rgb(0 0 0 / 0.1);
  --tui-announcement-fg: var(--tui-fg);
  --tui-announcement-muted: var(--tui-muted-fg);
  --tui-announcement-well: color-mix(in srgb, light-dark(var(--tui-bg), color-mix(in oklab, var(--tui-bg) 90%, var(--tui-fg))) 94%, var(--tui-fg));
  --tui-announcement-accent: var(--tui-primary);
  --tui-announcement-accent-fg: var(--tui-primary-fg);
}

.dark,
[data-theme="dark"] {
  color-scheme: dark;
  --tui-bg: #0a0a0a;
  --tui-fg: #fafafa;
  --tui-muted: #1c1c1c;
  --tui-muted-fg: #a3a3a3;
  --tui-border: #2a2a2a;
  --tui-primary: #fafafa;
  --tui-primary-fg: #171717;
  --tui-ring: #737373;
  --tui-success: #22c55e;
  --tui-warning: #f59e0b;
  --tui-danger: #ef4444;
}