Радіо «Накипіло» design system

---
version: alpha
name: Радіо «Накипіло»
description: "Light monochrome interface measured from radio.nakypilo.ua: IBM Plex Sans type, flat surfaces and 12px corners."
colors:
  background: "#FFFFFF"
  surface: "#FFFFFF"
  on-surface: "#212121"
  on-background: "#212121"
  on-surface-strong: "#111111"
  on-surface-variant: "#46274B"
  on-surface-muted: "#492C49"
  overlay: "#64646466"
  outline: "#EDEDED80"
  outline-variant: "#6464644D"
  primary: "#492C49"
  on-primary: "#FFFFFF"
  inverse-surface: "#101010"
typography:
  display-hero:
    fontFamily: IBM Plex Sans
    fontSize: 44px
    fontWeight: 700
    lineHeight: 1.4
    letterSpacing: -0.04em
  headline-display:
    fontFamily: IBM Plex Sans
    fontSize: 31px
    fontWeight: 700
    lineHeight: 1.26
    letterSpacing: -0.04em
  headline-lg:
    fontFamily: IBM Plex Sans
    fontSize: 22.5px
    fontWeight: 400
    lineHeight: 1.26
    letterSpacing: -0.04em
  body-md:
    fontFamily: IBM Plex Sans
    fontSize: 18px
    fontWeight: 400
    lineHeight: 1.2
    letterSpacing: -0.04em
  code:
    fontFamily: IBM Plex Mono
    fontSize: 18px
    fontWeight: 400
    lineHeight: 1.54
  headline-display-mobile:
    fontFamily: IBM Plex Sans
    fontSize: 22px
    fontWeight: 700
    lineHeight: 1.2
    letterSpacing: -0.04em
  display-hero-mobile:
    fontFamily: IBM Plex Sans
    fontSize: 27px
    fontWeight: 700
    lineHeight: 1.4
    letterSpacing: -0.04em
  headline-lg-mobile:
    fontFamily: IBM Plex Sans
    fontSize: 19px
    fontWeight: 400
    lineHeight: 1.2
    letterSpacing: -0.04em
rounded:
  sm: 2px
  md: 12px
  lg: 50px
  full: 9999px
spacing:
  xs: 3.6px
  sm: 5px
  md: 10px
  lg: 22px
  section: 192px
  container: 1170px
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.on-primary}"
    rounded: "{rounded.lg}"
    padding: 10px 20px
    height: 44px
  button-primary-hover:
    backgroundColor: "#CFE7D6"
    textColor: "{colors.on-surface-muted}"
  button-outline:
    textColor: "{colors.on-primary}"
    rounded: "{rounded.lg}"
    padding: 10px
    height: 34px
  button-outline-hover:
    backgroundColor: "#CFE7D6"
    textColor: "{colors.on-surface-muted}"
  button-ghost:
    textColor: "{colors.on-primary}"
    rounded: "{rounded.lg}"
    padding: 10px
    height: 44px
  card:
    backgroundColor: "{colors.background}"
    textColor: "{colors.on-surface}"
    typography: "{typography.body-md}"
    rounded: "{rounded.md}"
    padding: 0px 12px 0px 80px
  link:
    textColor: "{colors.on-surface-variant}"
---

# Радіо «Накипіло» Design System

## Overview

Радіо «Накипіло» describes itself as: “Радіо "Накипіло" створене для харків'ян та всіх українців. Слухати українське радіо Харків UA онлайн можна тут. Харьков радио онлайн.” The interface is light, built on **White (#FFFFFF)** with **Charcoal (#212121)** text and almost no color: actions are carried by contrast, not hue.

Type is set in **IBM Plex Sans**, with **IBM Plex Mono** for code. Headlines run large with tight negative tracking; body text is 18px. Depth comes from soft drop shadows. Corners are mostly 12px.

Measured from [radio.nakypilo.ua](https://radio.nakypilo.ua/) on November 5, 2026 at 1440×900 and 390×844 from 359 rendered elements. Values are computed styles from the live page, not the original source files.

## Colors

The palette has 11 roles, plus gradient stops #46274B, #C81717.

- **White (#FFFFFF):** Page background, seen 24 times. Token `background`, CSS `--wp--preset--color--white`.
- **Charcoal (#212121):** Primary text and headings, seen 28 times. Token `on-surface`.
- **Charcoal (#111111):** Headings and emphasis, seen 29 times. Token `on-surface-strong`.
- **Dark Purple (#46274B):** Secondary text, seen 6 times. Token `on-surface-variant`.
- **Dark Purple (#492C49):** Muted text and metadata, seen 12 times. Token `on-surface-muted`.
- **Slate 40% (#64646466):** Translucent fill for cards and controls, seen 1 time. Token `overlay`.
- **Mist 50% (#EDEDED80):** Borders and dividers, seen 6 times. Token `outline`.
- **Slate 30% (#6464644D):** Secondary dividers, seen 3 times. Token `outline-variant`.
- **Dark Purple (#492C49):** Primary buttons and calls to action, seen 20 times. Token `primary`.
- **White (#FFFFFF):** Text and icons on primary. Token `on-primary`.
- **Charcoal (#101010):** High-contrast fills, seen 31 times. Token `inverse-surface`.

## Typography

**IBM Plex Sans** and **IBM Plex Mono** (monospace) share the interface. Fallback stack: `IBM Plex Sans`. Other loaded fonts: qt-socicon, Material Icons.

- **display-hero:** IBM Plex Sans 44px at weight 700, line height 1.4, tracking -0.04em, uppercase (27px on mobile). Oversized hero statements.
- **headline-display:** IBM Plex Sans 31px at weight 700, line height 1.26, tracking -0.04em (22px on mobile). Page title (h1).
- **headline-lg:** IBM Plex Sans 22.5px at weight 400, line height 1.26, tracking -0.04em, uppercase (19px on mobile). Section headings (h2).
- **body-md:** IBM Plex Sans 18px at weight 400, line height 1.2, tracking -0.04em. Body text.
- **code:** IBM Plex Mono 18px at weight 400, line height 1.54, uppercase. Code and technical values.

## Layout

Spacing does not follow a strict grid: 17% of measured values are multiples of 4px, so match the measured steps rather than rounding to a grid.

- **Scale:** xs 3.6px, sm 5px, md 10px, lg 22px.
- **Sections:** 192px vertical padding between major sections.
- **Container:** content is capped at 1170px.
- **Breakpoints:** 600px, 601px, 700px, 767px, 768px, 900px, 1024px, 1200px, 1350px, 1415px, 1439px, 1440px, 1860px.

## Elevation & Depth

Raised elements use soft drop shadows. The most used recipes:

- `rgba(0, 0, 0, 0.5) 0px 0px 6px 0px`
- `rgba(0, 0, 0, 0.03) 0px 0px 15px 0px`
- `rgba(0, 0, 0, 0.2) -2px 0px 18px 3px`

## Shapes

Most elements use 12px corners. Measured radii, most used first:

- **md (12px):** 204 elements.
- **lg (50px):** 60 elements.
- **sm (2px):** 12 elements.
- **full (9999px):** 4 elements.

## Components

Measured from the rendered page. Token values reference the tokens above.

- **button-primary (“Pop-up плеєр”):** #492C49 fill, #FFFFFF text, 10px/600, 50px radius, padding 10px 20px, border 2px solid #492C49.
- **button-primary-hover:** background #CFE7D6, text #492C49 on hover.
- **button-outline (“Наші контакти”):** transparent fill, #FFFFFF text, 10px/600, 50px radius, padding 10px, border 2px solid #FFFFFFA8.
- **button-outline-hover:** background #CFE7D6, text #492C49 on hover.
- **button-ghost (“call”):** transparent fill, #FFFFFF text, 10px/600, 50px radius, padding 10px, border 2px solid #FFFFFF.
- **card:** #FFFFFF fill, #212121 text, 18px/400, 12px radius, padding 0px 12px 0px 80px, shadow `rgba(0, 0, 0, 0.5) 0px 0px 6px 0px`.
- **link:** transparent fill, #46274B text, padding 0px.

## Do's and Don'ts

- Do use #FFFFFF for the page.
- Do keep text in 4 levels: #212121, #111111, #46274B, #492C49.
- Do let contrast carry emphasis; primary actions use #492C49 on #FFFFFF.
- Do set headlines in IBM Plex Sans with tight tracking (-0.04em).
- Do reuse the measured spacing steps (5px, 10px, 22px).
- Do use 12px corners on most elements; larger surfaces also use 50px and 2px.
- Don't introduce new font families beyond IBM Plex Sans and IBM Plex Mono.
- Don't add saturated accent colors; the measured palette is almost entirely neutral.
- Don't make interface transitions slower than 0.5s.

## Motion

Interface transitions are quick: 0.5s, 0.3s, 0.25s, 0.2s. Longer ambient animations run 1.4s, 1.2s.

- **Easing:** `ease`, `cubic-bezier(0.2, 0.9, 0, 1)`, `ease-out`.
- **Reduced motion:** the page responds to `prefers-reduced-motion`.

Generated by [Sitepeel](https://sitepeel.dev/design-md/radio.nakypilo.ua/), the free DESIGN.md generator (engine 2026.10.29+b828a475ee10).