workbuddy_skills/open-design/design-systems/nike/components.html

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    <title>Nike — reference components</title>
    <meta
      name="description"
      content="Reference fixture for design-systems/nike. Monochromatic UI
        (black / white / grey only), massive uppercase Nike Futura ND display
        type at 96px / 0.90 line-height, pill-shaped buttons (30px radius),
        zero card shadows. Just keep going."
    />

    <style>
      :root {
        --bg: #ffffff;
        --surface: #f5f5f5;
        --surface-warm: #fafafa;

        --fg: #111111;
        --fg-2: var(--fg);
        --muted: #707072;
        --meta: #9e9ea0;

        --border: #cacacb;
        --border-soft: #e5e5e5;

        --accent: #111111;
        --accent-on: #ffffff;
        --accent-hover: #707072;
        --accent-active: #000000;

        --success: #007d48;
        --warn: #fca600;
        --danger: #d30005;

        --font-display:
          "Nike Futura ND", "Helvetica Now Display Medium", "Helvetica Now Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
        --font-body:
          "Helvetica Now Text Medium", "Helvetica Now Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
        --font-mono:
          ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Monaco, Consolas, monospace;

        --text-xs: 12px;
        --text-sm: 14px;
        --text-base: 16px;
        --text-lg: 20px;
        --text-xl: 24px;
        --text-2xl: 32px;
        --text-3xl: 48px;
        --text-4xl: 96px;

        --leading-body: 1.75;
        --leading-tight: 0.9;

        --tracking-display: -0.02em;

        --space-1: 4px;
        --space-2: 8px;
        --space-3: 12px;
        --space-4: 16px;
        --space-5: 20px;
        --space-6: 24px;
        --space-8: 32px;
        --space-12: 48px;

        --section-y-desktop: 80px;
        --section-y-tablet: 48px;
        --section-y-phone: 32px;

        --radius-sm: 8px;
        --radius-md: 20px;
        --radius-lg: 24px;
        --radius-pill: 30px;

        --elev-flat: none;
        --elev-ring: 0 0 0 1px var(--border);
        --elev-raised: 0 0 0 1px var(--border);

        --focus-ring: 0 0 0 2px rgba(39, 93, 197, 1);

        --motion-fast: 150ms;
        --motion-base: 200ms;
        --ease-standard: cubic-bezier(0.2, 0, 0, 1);

        --container-max: 1440px;
        --container-gutter-desktop: 48px;
        --container-gutter-tablet: 24px;
        --container-gutter-phone: 16px;
      }

      /* ─── Reset ─────────────────────────────────────────────── */
      *, *::before, *::after { box-sizing: border-box; }
      html, body { margin: 0; padding: 0; }
      body {
        background: var(--bg);
        color: var(--fg);
        font-family: var(--font-body);
        font-size: var(--text-base);
        font-weight: 500;            /* Nike's body weight — Helvetica Now Text Medium */
        line-height: var(--leading-body);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }

      /* ─── Promo bar — Nike's signature dark band atop every page ─
         §4: "Top banner: promotional message bar with dark background
         (#111111) and white text", 8–12px vertical padding, 12px/500
         centered text. */
      .promo-bar {
        background: var(--fg);
        color: var(--bg);
        font-size: var(--text-xs);
        font-weight: 500;
        text-align: center;
        padding: var(--space-2) var(--space-4);
        letter-spacing: 0.02em;
      }
      .promo-bar a { color: var(--bg); text-decoration: underline; text-underline-offset: 2px; }

      /* ─── Layout ─────────────────────────────────────────────── */
      .container {
        max-width: var(--container-max);
        margin-inline: auto;
        padding-inline: var(--container-gutter-desktop);
      }
      section { padding-block: var(--section-y-desktop); }
      section + section { border-top: 1px solid var(--border-soft); }
      @media (max-width: 1023px) {
        .container { padding-inline: var(--container-gutter-tablet); }
        section { padding-block: var(--section-y-tablet); }
      }
      @media (max-width: 639px) {
        .container { padding-inline: var(--container-gutter-phone); }
        section { padding-block: var(--section-y-phone); }
      }

      /* ─── Typography ─────────────────────────────────────────────
         Nike's display layer is uppercase Nike Futura ND at 96px with
         0.90 line-height — the "stadium scoreboard" §3 calls for.
         Below the display layer, Helvetica Now (body) handles
         everything at weight 500 (the brand's documented dominant
         weight for interactive copy). */
      h1, h2, h3 {
        margin: 0;
        color: var(--fg);
      }
      /* h1 — Hero Display, uppercase Futura, ascenders nearly touch
         descenders. Nike Futura ND below 24px is forbidden (§7), so
         h1 is the ONLY place this size and treatment appear. */
      h1 {
        font-family: var(--font-display);
        font-size: var(--text-4xl);
        font-weight: 500;
        line-height: var(--leading-tight);
        letter-spacing: var(--tracking-display);
        text-transform: uppercase;
      }
      /* h2 — section heading, Helvetica Now Display Medium tier
         (the second slot in --font-display falls onto it when
         Futura ND is absent). Title-case, NOT uppercase. */
      h2 {
        font-family: var(--font-display);
        font-size: var(--text-2xl);
        font-weight: 500;
        line-height: 1.2;
      }
      /* h3 — card title at the body baseline, weight 500. */
      h3 {
        font-family: var(--font-body);
        font-size: var(--text-base);
        font-weight: 500;
        line-height: 1.5;
      }
      p { margin: 0; }

      .lead {
        font-size: var(--text-lg);
        line-height: 1.5;
        color: var(--muted);
        font-weight: 500;
      }
      .body-muted { color: var(--muted); }
      .body-meta  { color: var(--meta); font-size: var(--text-sm); }
      .body-sm    { font-size: var(--text-sm); }

      /* `.eyebrow` — small uppercase label above section heads. The
         only place Nike pushes positive tracking (uppercase needs the
         breathing room); display copy below uses negative tracking. */
      .eyebrow {
        font-family: var(--font-body);
        font-size: var(--text-xs);
        font-weight: 500;
        line-height: 1;
        color: var(--muted);
        text-transform: uppercase;
        letter-spacing: 0.12em;
      }

      .stack-3 > * + * { margin-block-start: var(--space-3); }
      .stack-4 > * + * { margin-block-start: var(--space-4); }
      .stack-6 > * + * { margin-block-start: var(--space-6); }
      .stack-8 > * + * { margin-block-start: var(--space-8); }

      /* ─── Buttons — pill geometry, monochrome only ───────────────
         Nike's pill (30px radius) is the SOLE button silhouette across
         the whole brand (§4). Primary uses --accent (Nike Black) with
         the hover shifting to grey-500 — the documented behaviour, not
         a darken. Secondary is the 1.5px outlined variant from §4. */
      .btn {
        display: inline-flex;
        align-items: center;
        gap: var(--space-2);
        padding: 12px 24px;
        border: none;
        border-radius: var(--radius-pill);
        font-family: var(--font-body);
        font-size: var(--text-base);
        font-weight: 500;            /* §7 — never weight 400 on buttons */
        line-height: 1.2;
        cursor: pointer;
        text-decoration: none;
        transition:
          background-color var(--motion-base) var(--ease-standard),
          color            var(--motion-base) var(--ease-standard),
          border-color     var(--motion-base) var(--ease-standard),
          box-shadow       var(--motion-fast) var(--ease-standard);
      }
      .btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
      .btn:active { opacity: 0.85; }

      .btn-primary {
        background: var(--accent);
        color: var(--accent-on);
      }
      .btn-primary:hover  { background: var(--accent-hover); }
      .btn-primary:active { background: var(--accent-active); }

      /* §4 — secondary outlined: 1.5px solid grey-300, 30px pill. */
      .btn-secondary {
        background: transparent;
        color: var(--fg);
        border: 1.5px solid var(--border);
        padding: 10.5px 22.5px;       /* compensates for the 1.5px border */
      }
      .btn-secondary:hover {
        border-color: var(--muted);
        background: var(--surface);
      }

      /* ─── Inputs — fill-led, soft hairline ───────────────────────
         §4 — non-search inputs use grey-100 fill, 8px radius
         (--radius-sm), border-active darkens to Nike Black on focus,
         and the focus ring is the documented blue 2px halo. */
      .field { display: flex; flex-direction: column; gap: var(--space-2); }
      .field label {
        font-size: var(--text-sm);
        font-weight: 500;
        color: var(--fg);
      }
      .field input {
        padding: 14px 16px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border);
        background: var(--surface);
        color: var(--fg);
        font-family: var(--font-body);
        font-size: var(--text-base);
        font-weight: 500;
        line-height: 1.2;
        outline: none;
        transition:
          border-color var(--motion-base) var(--ease-standard),
          background-color var(--motion-base) var(--ease-standard),
          box-shadow var(--motion-fast) var(--ease-standard);
      }
      .field input::placeholder { color: var(--muted); font-weight: 500; }
      .field input:hover { border-color: var(--muted); }
      .field input:focus-visible {
        border-color: var(--fg);     /* Border Active = Nike Black, §2 */
        background: var(--bg);
        box-shadow: var(--focus-ring);
      }
      .field-help { font-size: var(--text-xs); color: var(--muted); }

      /* ─── Cards — flat, surface-defined, NO shadow ───────────────
         §6 — "Nike's elevation philosophy is radically flat. There
         are no card shadows, no hover lifts, no floating elements."
         Cards differentiate from --bg by sitting on --surface, with
         a 20px (--radius-md) corner for "interactive containers"
         per §5. */
      .card {
        background: var(--surface);
        border-radius: var(--radius-md);
        padding: var(--space-6);
        display: flex;
        flex-direction: column;
        gap: var(--space-3);
        /* No box-shadow, no border, no hover lift — by Nike contract. */
      }

      /* ─── Badges — pill-shaped status indicators ─────────────── */
      .badge {
        display: inline-flex;
        align-items: center;
        gap: var(--space-2);
        padding: 4px var(--space-3);
        border-radius: var(--radius-pill);
        font-family: var(--font-body);
        font-size: var(--text-xs);
        font-weight: 500;
        line-height: 1.4;
      }
      .badge-success {
        color: var(--success);
        background: color-mix(in oklab, var(--success), transparent 88%);
      }
      .badge-muted {
        color: var(--muted);
        background: var(--surface);
      }
      .badge-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: currentColor;
      }

      /* ─── Links — black text, hover underline, kbd ─────────────
         §4 nav: "text color shifts to Grey-500 (#707072)" on hover.
         No blue inline links here — Nike keeps reading copy
         monochrome and reserves --focus-ring blue for keyboard focus
         alone. */
      a { color: var(--fg); text-decoration: none; transition: color var(--motion-base) var(--ease-standard); }
      a:hover { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }

      kbd {
        font-family: var(--font-mono);
        font-size: var(--text-xs);
        padding: 2px 6px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border);
        background: var(--surface);
        color: var(--muted);
      }

      /* ─── Layout helpers — hero, features, form ───────────────── */
      .hero-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr;
        gap: var(--space-12);
        align-items: end;
      }
      @media (max-width: 1023px) {
        .hero-grid { grid-template-columns: 1fr; gap: var(--space-8); }
      }
      .hero-actions {
        display: flex;
        gap: var(--space-3);
        margin-block-start: var(--space-6);
        flex-wrap: wrap;
      }
      .hero-meta {
        display: flex;
        flex-direction: column;
        gap: var(--space-3);
        padding: var(--space-5);
        background: var(--surface);
        border-radius: var(--radius-md);
        /* No border, no shadow — surface contrast does the work. */
      }

      .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);          /* Nike's "tight 4-12px" product-grid gap */
      }
      @media (max-width: 1023px) { .features-grid { grid-template-columns: 1fr 1fr; } }
      @media (max-width: 639px)  { .features-grid { grid-template-columns: 1fr; } }

      .form-row {
        display: grid;
        grid-template-columns: 1.4fr 1fr;
        gap: var(--space-12);
        align-items: start;
      }
      @media (max-width: 1023px) { .form-row { grid-template-columns: 1fr; } }
      .form { display: flex; flex-direction: column; gap: var(--space-4); max-width: 420px; }
      .form-actions { display: flex; gap: var(--space-3); margin-block-start: var(--space-2); flex-wrap: wrap; }

      .icon { width: 16px; height: 16px; flex-shrink: 0; }
      .row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }

      /* `.swoosh` — a stylized swoosh divider rule that anchors the
         hero. Pure CSS, no real Nike marks, just a visual nod to the
         brand's geometric language. */
      .swoosh {
        width: 64px;
        height: 4px;
        background: var(--fg);
        border-radius: var(--radius-pill);
      }
    </style>
  </head>
  <body>
    <div class="promo-bar" role="region" aria-label="Promotional banner">
      Free shipping for members. <a href="#join">Join us.</a>
    </div>

    <main class="container">
      <section data-od-id="hero">
        <div class="hero-grid">
          <div class="stack-6">
            <div class="stack-3">
              <span class="swoosh" aria-hidden="true"></span>
              <p class="eyebrow">Reference fixture · nike</p>
            </div>
            <h1>Just keep going.</h1>
            <p class="lead" style="max-width: 44ch">
              Built for the ones who don't quit. From dawn miles to sold-out
              stadiums, every stitch earns its place — and every pixel of
              this page is here to sell sport, nothing else.
            </p>
            <div class="hero-actions">
              <a href="./tokens.css" class="btn btn-primary">
                Shop new arrivals
                <svg class="icon" viewBox="0 0 24 24" fill="none"
                  stroke="currentColor" stroke-width="1.75"
                  stroke-linecap="round" stroke-linejoin="round"
                  aria-hidden="true"><path d="M5 12h14M13 6l6 6-6 6"/></svg>
              </a>
              <a href="./DESIGN.md" class="btn btn-secondary">Read the spec</a>
            </div>
          </div>
          <aside class="hero-meta" aria-label="Member benefits">
            <div class="row-between">
              <span class="body-sm" style="font-weight: 500">Member status</span>
              <span class="badge badge-success">
                <span class="badge-dot" aria-hidden="true"></span>
                Active
              </span>
            </div>
            <p class="body-meta">Last reviewed <time datetime="2026-05-15">2026-05-15</time> · v1.0</p>
            <p class="body-meta">Press <kbd>⌘</kbd> <kbd>K</kbd> to search the spec.</p>
          </aside>
        </div>
      </section>

      <section data-od-id="features">
        <div class="stack-3">
          <p class="eyebrow">What this fixture exercises</p>
          <h2 style="max-width: 22ch">Restraint as an athletic discipline.</h2>
        </div>
        <div class="features-grid" style="margin-block-start: var(--space-8)">
          <article class="card">
            <h3>Monochrome on purpose</h3>
            <p class="body-muted body-sm">
              --bg (#ffffff) → --surface (#f5f5f5) → --fg (#111111).
              The UI carries no color so product photography can. Red, green,
              blue are reserved for semantic moments only.
            </p>
            <a href="./tokens.css" class="body-sm" style="font-weight: 500">Inspect tokens →</a>
          </article>
          <article class="card">
            <h3>Display type that punches</h3>
            <p class="body-muted body-sm">
              Nike Futura ND at 96px / 0.90 line-height, uppercase, tightened
              tracking. A typographic shockwave reserved exclusively for the
              hero — never below 24px.
            </p>
            <a href="./DESIGN.md" class="body-sm" style="font-weight: 500">Read the rule →</a>
          </article>
          <article class="card">
            <h3>Pills, no shadows</h3>
            <p class="body-muted body-sm">
              --radius-pill is bound to 30px (the literal Nike value, not
              9999). --elev-raised collapses onto --elev-ring because the
              brand refuses card shadows outright.
            </p>
            <a href="./tokens.css" class="body-sm" style="font-weight: 500">Inspect radius →</a>
          </article>
        </div>
      </section>

      <section data-od-id="form" id="join">
        <div class="form-row">
          <div class="stack-4">
            <p class="eyebrow">Become a member</p>
            <h2>Free shipping. First access. No nonsense.</h2>
            <p class="body-muted" style="max-width: 48ch">
              Members hear about drops first, get free shipping on every order,
              and unlock the Nike Run Club / Training Club apps. One account,
              every sport.
            </p>
          </div>
          <form class="form" onsubmit="event.preventDefault();">
            <div class="field">
              <label for="email">Email address</label>
              <input id="email" type="email" placeholder="[email protected]" autocomplete="email" required />
              <p class="field-help">We'll send membership perks. No marketing noise.</p>
            </div>
            <div class="form-actions">
              <button type="submit" class="btn btn-primary">Sign me up</button>
              <button type="button" class="btn btn-secondary">Learn more</button>
            </div>
          </form>
        </div>
      </section>
    </main>
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