/* BMXBike.info — homepage mockup (desktop + mobile)
   System: Oswald (display) / Inter (body) / IBM Plex Mono (eyebrow)
   Palette: graphite #171A1E · asphalt #23282F · steel #6f7880 · off-white #F5F7F8 · lime #C6FF3A
*/

const CH = {
  ink:     '#F5F7F8',
  inkDim:  'rgba(245,247,248,0.62)',
  inkLow:  'rgba(245,247,248,0.34)',
  inkFaint:'rgba(245,247,248,0.14)',
  bg:      '#171A1E',
  panel:   '#23282F',
  steel:   '#6f7880',
  lime:    '#C6FF3A',
  limeDim: 'rgba(198,255,58,0.5)',
  coral:   '#FF6E4A',
};

// Public site config. Claude should update site-config.js for each domain.
const SITE = {
  domain: 'bmxbike.info',
  brandName: 'BMXBike.info',
  category: 'BMX Culture / Editorial Concept',
  inquiryApi: 'https://inquiries.brianhaberstroh.com/api/inquiry',
  successMessage: 'Thanks — your inquiry for BMXBike.info has been sent.',
  messagePlaceholder: 'Tell us what you would build with BMXBike.info.',
  ...(window.SITE_CONFIG || {}),
};

/* ---------- shared bits ---------- */

const grainSVG = "url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.45 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>\")";

const Grain = ({ opacity = 0.55, blend = 'overlay' }) => (
  <div style={{
    position: 'absolute', inset: 0, pointerEvents: 'none',
    backgroundImage: grainSVG,
    opacity, mixBlendMode: blend,
  }} />
);

/* Photo placeholder plate — looks like an art-directed dark photo slot.
   When `image` is set, uses a real photo instead of the placeholder gradient. */
const Plate = ({ mood = 'garage', caption, image, imagePos = 'center', children, style = {}, id }) => {
  const moods = {
    garage: `
      radial-gradient(ellipse 70% 55% at 50% 18%, rgba(90,120,150,0.18), transparent 62%),
      radial-gradient(ellipse 50% 40% at 18% 78%, rgba(50,70,90,0.15), transparent 70%),
      radial-gradient(ellipse 40% 30% at 82% 70%, rgba(20,28,38,0.5), transparent 70%),
      linear-gradient(180deg, #1a2028 0%, #0e1318 55%, #070b0f 100%)`,
    metal: `
      radial-gradient(ellipse 80% 60% at 50% 50%, rgba(100,115,130,0.18), transparent 65%),
      linear-gradient(115deg, #0d1014 0%, #181e24 50%, #080c10 100%)`,
    road: `
      radial-gradient(ellipse 90% 30% at 50% 100%, rgba(198,255,58,0.08), transparent 60%),
      linear-gradient(180deg, #060809 0%, #0c1014 60%, #181e24 100%)`,
    leather: `
      radial-gradient(ellipse 70% 50% at 60% 40%, rgba(80,100,120,0.18), transparent 62%),
      linear-gradient(160deg, #1a1e24 0%, #0d1014 100%)`,
    workshop: `
      radial-gradient(circle 320px at 70% 30%, rgba(198,255,58,0.08), transparent 60%),
      radial-gradient(circle 220px at 20% 80%, rgba(60,80,100,0.12), transparent 65%),
      linear-gradient(180deg, #141820 0%, #07060500 100%), #060809`,
  };
  return (
    <div id={id} style={{
      position: 'relative', overflow: 'hidden',
      background: image
        ? `#0b0e12 url("${image}") ${imagePos} / cover no-repeat`
        : (moods[mood] || moods.garage),
      ...style,
    }}>
      <Grain opacity={image ? 0.25 : 0.55} />
      {/* faint vignette */}
      <div style={{
        position: 'absolute', inset: 0, pointerEvents: 'none',
        background: image
          ? 'radial-gradient(ellipse 95% 80% at 50% 50%, transparent 60%, rgba(0,0,0,0.45) 100%)'
          : 'radial-gradient(ellipse 90% 70% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%)',
      }} />
      {caption && (
        <div style={{
          position: 'absolute', bottom: 14, right: 18,
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
          letterSpacing: 1.4, textTransform: 'uppercase',
          color: 'rgba(245,247,248,0.42)',
        }}>{caption}</div>
      )}
      {children}
    </div>
  );
};

/* VideoPlate — like Plate, but backed by a looping mp4 with the same overlays. */
const VideoPlate = ({ src, caption, children, style = {}, poster, id }) => (
  <div id={id} style={{ position: 'relative', overflow: 'hidden', background: '#0b0e12', ...style }}>
    <video
      src={src}
      poster={poster}
      autoPlay
      muted
      loop
      playsInline
      preload="auto"
      style={{
        position: 'absolute', inset: 0,
        width: '100%', height: '100%',
        objectFit: 'cover', objectPosition: 'center',
      }}
    />
    {/* cool neutral wash + dark vignette layered on top of the video */}
    <div style={{
      position: 'absolute', inset: 0, pointerEvents: 'none',
      background: `
        radial-gradient(ellipse 70% 55% at 50% 18%, rgba(198,255,58,0.05), transparent 62%),
        radial-gradient(ellipse 90% 70% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%),
        linear-gradient(180deg, rgba(0,0,0,0.25) 0%, transparent 30%, transparent 55%, rgba(0,0,0,0.55) 100%)`,
    }} />
    <Grain opacity={0.35} blend="overlay" />
    {caption && (
      <div style={{
        position: 'absolute', bottom: 14, right: 18,
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
        letterSpacing: 1.4, textTransform: 'uppercase',
        color: 'rgba(245,247,248,0.55)',
      }}>{caption}</div>
    )}
    {children}
  </div>
);

const Eyebrow = ({ children, style = {} }) => (
  <div style={{
    fontFamily: 'IBM Plex Mono, monospace',
    fontSize: 10.5, letterSpacing: 2.2, textTransform: 'uppercase',
    color: CH.lime,
    display: 'inline-flex', alignItems: 'center', gap: 10,
    ...style,
  }}>
    <span style={{ width: 22, height: 1, background: CH.lime, opacity: 0.85 }} />
    <span>{children}</span>
  </div>
);

/* BMX wheel mark */
const CHMark = ({ size = 56, color = CH.ink, accent = CH.lime }) => (
  <svg viewBox="0 0 64 64" width={size} height={size} style={{ display: 'block' }}>
    {/* hairline frame */}
    <rect x="1.5" y="1.5" width="61" height="61" fill="none" stroke={color} strokeOpacity="0.35" strokeWidth="1" />
    {/* wheel circle */}
    <circle cx="32" cy="32" r="17" fill="none" stroke={color} strokeOpacity="0.7" strokeWidth="1.5" />
    {/* hub */}
    <circle cx="32" cy="32" r="3" fill={accent} />
    {/* spokes */}
    <line x1="32" y1="15" x2="32" y2="49" stroke={color} strokeOpacity="0.35" strokeWidth="0.8" />
    <line x1="15" y1="32" x2="49" y2="32" stroke={color} strokeOpacity="0.35" strokeWidth="0.8" />
    <line x1="20" y1="20" x2="44" y2="44" stroke={color} strokeOpacity="0.2" strokeWidth="0.8" />
    <line x1="44" y1="20" x2="20" y2="44" stroke={color} strokeOpacity="0.2" strokeWidth="0.8" />
    {/* lime tick */}
    <rect x="28" y="55" width="8" height="3" fill={accent} />
  </svg>
);

/* Wordmark — Oswald, condensed, set tight */
const Wordmark = ({ size = 22, color = CH.ink }) => (
  <span style={{
    fontFamily: 'Oswald, "Saira Condensed", sans-serif',
    fontWeight: 600, fontSize: size, letterSpacing: 0.5,
    color, lineHeight: 1, textTransform: 'none',
    display: 'inline-flex', alignItems: 'baseline', gap: size * 0.08,
  }}>
    <span>BMXBike</span><span style={{ fontWeight: 400, opacity: 0.65, color: CH.lime, fontSize: size * 0.78 }}>.info</span>
  </span>
);

/* ──────────── Shared form logic ──────────── */

const INQUIRY_API_URL = SITE.inquiryApi;

function useInquiryForm() {
  const [values, setValues] = React.useState({
    name: '', email: '', company: '', offer: '', intendedUse: '', message: '', website: ''
  });
  const [status, setStatus] = React.useState('idle');
  const [errorMsg, setErrorMsg] = React.useState('');

  const set = field => e => setValues(v => ({ ...v, [field]: e.target.value }));

  const handleSubmit = async e => {
    e.preventDefault();
    if (status === 'submitting') return;
    if (!values.name.trim() || !values.message.trim()) {
      setStatus('error'); setErrorMsg('Name and Message are required.'); return;
    }
    if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(values.email)) {
      setStatus('error'); setErrorMsg('Please enter a valid email address.'); return;
    }
    setStatus('submitting');
    try {
      const res = await fetch(INQUIRY_API_URL, {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          ...values,
          budget: values.offer,
          domain: SITE.domain,
          category: SITE.category,
          pageUrl: window.location.href,
          referrer: document.referrer,
          submittedAt: new Date().toISOString(),
        }),
      });
      if (res.ok) {
        setStatus('success');
      } else {
        const d = await res.json().catch(() => ({}));
        setStatus('error');
        setErrorMsg(d.error || d.message || 'Something went wrong. Please try again.');
      }
    } catch {
      setStatus('error');
      setErrorMsg('Something went wrong sending your inquiry. Please try again or contact the owner directly.');
    }
  };

  return { values, status, errorMsg, set, handleSubmit };
}

const MobileContactForm = () => {
  const { values, status, errorMsg, set, handleSubmit } = useInquiryForm();
  const fields = [
    { l: 'Name',    n: 'name',    t: 'text',  r: true, h: 'Required',             p: 'First & last' },
    { l: 'Email',   n: 'email',   t: 'email', r: true, h: 'Required',             p: 'you@company.com' },
    { l: 'Message', n: 'message', t: 'area',  r: true, h: 'What you would build', p: SITE.messagePlaceholder },
  ];
  return (
    <form onSubmit={handleSubmit} style={{ marginTop: 36, position: 'relative' }}>
      <div style={{ position: 'absolute', left: '-9999px', height: 0, overflow: 'hidden' }} aria-hidden="true">
        <input type="text" name="website" value={values.website} onChange={set('website')} tabIndex={-1} autoComplete="off" />
      </div>
      {status === 'success' ? (
        <div style={{ padding: '40px 0', fontFamily: 'IBM Plex Mono, monospace',
          fontSize: 10.5, letterSpacing: 2, textTransform: 'uppercase', color: CH.lime, lineHeight: 1.8 }}>
          {SITE.successMessage}
        </div>
      ) : (
        <>
          {status === 'error' && (
            <div style={{ marginBottom: 16, fontFamily: 'IBM Plex Mono, monospace',
              fontSize: 10, letterSpacing: 1.6, textTransform: 'uppercase',
              color: 'rgba(200,90,60,0.9)', lineHeight: 1.6 }}>
              {errorMsg}
            </div>
          )}
          {fields.map(f => (
            <div key={f.l} style={{ marginBottom: 22 }}>
              <div style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
                letterSpacing: 2, textTransform: 'uppercase', color: CH.lime,
                marginBottom: 10, display: 'flex', justifyContent: 'space-between',
              }}>
                <span>{f.l}</span>
                <span style={{ color: CH.inkLow }}>{f.h}</span>
              </div>
              {f.t === 'area' ? (
                <textarea name={f.n} value={values[f.n]} onChange={set(f.n)}
                  placeholder={f.p} required={f.r}
                  style={{
                    background: 'none', border: 'none', width: '100%',
                    borderBottom: `1px solid ${CH.inkFaint}`, paddingBottom: 12,
                    minHeight: 100, resize: 'vertical',
                    fontFamily: 'Oswald, sans-serif', fontSize: 20,
                    color: CH.ink, lineHeight: 1.3, letterSpacing: 0,
                    outline: 'none', caretColor: CH.lime,
                  }}
                />
              ) : (
                <input type={f.t} name={f.n} value={values[f.n]} onChange={set(f.n)}
                  placeholder={f.p} required={f.r}
                  style={{
                    background: 'none', border: 'none', width: '100%',
                    borderBottom: `1px solid ${CH.inkFaint}`, paddingBottom: 12,
                    fontFamily: 'Oswald, sans-serif', fontSize: 20,
                    color: CH.ink, letterSpacing: 0,
                    outline: 'none', caretColor: CH.lime,
                  }}
                />
              )}
            </div>
          ))}
          <button type="submit" disabled={status === 'submitting'} style={{
            display: 'inline-flex', alignItems: 'center', gap: 12, marginTop: 12,
            padding: '14px 22px',
            fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
            letterSpacing: 2.2, textTransform: 'uppercase',
            color: CH.bg, background: status === 'submitting' ? CH.steel : CH.lime,
            border: 'none', cursor: status === 'submitting' ? 'default' : 'pointer',
            opacity: status === 'submitting' ? 0.7 : 1,
          }}>
            {status === 'submitting' ? 'Sending…' : 'Start the Conversation'}
          </button>
          <div style={{
            marginTop: 18,
            fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
            letterSpacing: 1.6, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.7,
          }}>
            Concept shown for illustrative purposes.
          </div>
        </>
      )}
    </form>
  );
};

/* ============================================================
   DESKTOP — 1440 wide
   ============================================================ */

const Desktop = () => (
  <div style={{
    width: 1440, background: CH.bg, color: CH.ink,
    fontFamily: 'Inter, sans-serif', fontSize: 15, lineHeight: 1.55,
    position: 'relative', overflow: 'hidden',
  }}>
    <DesktopNav />
    <DesktopHero />
    <DesktopStory />
    <DesktopCulture />
    <DesktopManifesto />
    <DesktopIdentity />
    <DesktopContact />
    <DesktopFooter />
  </div>
);

const DesktopNav = () => (
  <div style={{
    position: 'absolute', top: 0, left: 0, right: 0, zIndex: 20,
    padding: '26px 56px',
    display: 'flex', alignItems: 'center', justifyContent: 'space-between',
  }}>
    <div style={{ display: 'flex', alignItems: 'center', gap: 18 }}>
      <Wordmark size={22} />
      <span style={{ width: 1, height: 14, background: CH.inkFaint }} />
      <span style={{
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
        letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
      }}>Est. MMXXV · Street &amp; Park</span>
    </div>
    <div style={{ display: 'flex', alignItems: 'center', gap: 40 }}>
      {[['Story', '#story'], ['Builds', '#culture'], ['Culture', '#manifesto']].map(([l, href], i) => (
        <a key={l} href={href} style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 11.5,
          letterSpacing: 2.2, textTransform: 'uppercase',
          color: i === 0 ? CH.ink : CH.inkDim, textDecoration: 'none',
          display: 'inline-flex', alignItems: 'center', gap: 6,
        }}>
          <span style={{
            color: CH.lime, opacity: 0.7,
            fontSize: 9, fontVariantNumeric: 'tabular-nums',
          }}>0{i + 1}</span>
          {l}
        </a>
      ))}
      <a href="#inquiry" style={{
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 11.5,
        letterSpacing: 2.2, textTransform: 'uppercase', color: CH.ink,
        textDecoration: 'none',
        border: `1px solid ${CH.inkFaint}`, padding: '10px 18px',
        display: 'inline-flex', alignItems: 'center', gap: 8,
      }}>
        Contact
        <span style={{ width: 5, height: 5, background: CH.lime, borderRadius: 0 }} />
      </a>
    </div>
  </div>
);

const DesktopHero = () => (
  <Plate id="hero" image="media/hero.jpg" imagePos="center top" caption="// 01 · bmx · street · electric" style={{ height: 880 }}>
    {/* left-column darkening for headline legibility */}
    <div style={{
      position: 'absolute', inset: 0,
      background: `
        linear-gradient(to right, rgba(23,26,30,0.82) 0%, rgba(23,26,30,0.52) 38%, rgba(23,26,30,0.12) 62%, transparent 80%),
        linear-gradient(180deg, rgba(23,26,30,0.30) 0%, transparent 28%, transparent 40%, rgba(23,26,30,0.65) 70%, rgba(23,26,30,0.92) 100%)
      `,
    }} />

    {/* corner indices */}
    <div style={{
      position: 'absolute', top: 110, left: 56,
      fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
      letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
    }}>
      N° 001 — Volume One
    </div>
    <div style={{
      position: 'absolute', top: 110, right: 56,
      fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
      letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
      textAlign: 'right',
    }}>
      Street / Park / Culture
    </div>

    {/* hero copy — left-anchored, lower third */}
    <div style={{
      position: 'absolute', left: 56, bottom: 96, maxWidth: 940,
    }}>
      <div style={{ marginBottom: 28 }}><Eyebrow>Independent BMX Editorial Concept</Eyebrow></div>
      <h1 style={{
        fontFamily: 'Oswald, sans-serif', fontWeight: 600,
        fontSize: 120, lineHeight: 0.95, letterSpacing: -0.5,
        margin: 0, color: CH.ink, textTransform: 'uppercase',
        textShadow: '0 2px 32px rgba(0,0,0,0.72), 0 0 80px rgba(0,0,0,0.5)',
      }}>
        Street.<br />
        <span style={{ color: CH.ink, fontWeight: 400 }}>Park.</span><br />
        <span style={{
          fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05,
          color: CH.lime, fontWeight: 400, textTransform: 'none',
        }}>Style.</span>
      </h1>
      <p style={{
        marginTop: 52, marginBottom: 0, maxWidth: 540,
        fontSize: 17, lineHeight: 1.55, color: CH.inkDim,
      }}>
        A clean, high-energy concept for a BMX destination built around riding culture,
        bike obsession, and the visual world that makes the category magnetic.
      </p>

      <div style={{ marginTop: 40, display: 'flex', alignItems: 'center', gap: 28 }}>
        <a href="#story" style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 11.5,
          letterSpacing: 2.4, textTransform: 'uppercase',
          color: CH.bg, background: CH.lime,
          padding: '18px 28px', textDecoration: 'none',
          display: 'inline-flex', alignItems: 'center', gap: 14,
        }}>
          Explore the Scene
          <span style={{ display: 'inline-block', width: 18, height: 1, background: CH.bg }} />
        </a>
        <a href="#culture" style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 11.5,
          letterSpacing: 2.4, textTransform: 'uppercase',
          color: CH.ink, textDecoration: 'none',
          padding: '18px 0',
          display: 'inline-flex', alignItems: 'center', gap: 12,
          borderBottom: `1px solid ${CH.inkFaint}`,
        }}>
          View Builds
        </a>
      </div>
    </div>

    {/* scroll marker bottom-right */}
    <div style={{
      position: 'absolute', right: 56, bottom: 64,
      display: 'flex', flexDirection: 'column', alignItems: 'flex-end', gap: 12,
    }}>
      <div style={{
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
        letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
      }}>Scroll · 01 of 06</div>
      <div style={{ width: 1, height: 56, background: `linear-gradient(180deg, ${CH.lime}, transparent)` }} />
    </div>
  </Plate>
);

const DesktopStory = () => (
  <div id="story" style={{
    background: CH.bg, padding: '160px 56px 160px',
    display: 'grid', gridTemplateColumns: '560px 1fr', gap: 96,
  }}>
    <Plate image="media/story.jpg" imagePos="center" caption="// 02 · bmx · editorial" style={{ height: 720 }} />

    <div style={{ paddingTop: 24, alignSelf: 'start' }}>
      <Eyebrow>02 — The Concept</Eyebrow>
      <h2 style={{
        marginTop: 36, marginBottom: 36, maxWidth: 660,
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 72, lineHeight: 0.98, letterSpacing: -0.5,
        color: CH.ink,
      }}>
        Built for the scene that<br />
        makes bikes<br />
        <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>their own.</span>
      </h2>
      <p style={{
        fontSize: 18, lineHeight: 1.6, color: CH.inkDim, maxWidth: 520, margin: 0,
      }}>
        BMXBike.info is built for the riders, builders, and culture that turn 20-inch bikes
        into identity — setups, terrain, street sessions, and the visual world behind the scene.
      </p>

      <div style={{
        marginTop: 64, paddingTop: 36, borderTop: `1px solid ${CH.inkFaint}`,
        display: 'grid', gridTemplateColumns: 'repeat(3, 1fr)', gap: 40, maxWidth: 580,
      }}>
        {[
          { n: '20', l: 'Feature builds' },
          { n: '06', l: 'Riding styles' },
          { n: '∞',  l: 'Lines to find' },
        ].map(s => (
          <div key={s.l}>
            <div style={{
              fontFamily: 'Oswald, sans-serif', fontWeight: 500,
              fontSize: 56, lineHeight: 1, color: CH.ink,
            }}>{s.n}</div>
            <div style={{
              marginTop: 10,
              fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
              letterSpacing: 1.8, textTransform: 'uppercase', color: CH.inkLow,
            }}>{s.l}</div>
          </div>
        ))}
      </div>
    </div>
  </div>
);

const cultureItems = [
  { n: '01', label: 'Street',  mood: 'metal',   image: 'media/parts.jpg',   h: 560, blurb: 'Ledges, rails, curbs, and city concrete. Urban lines and raw BMX energy from street sessions.',  cap: '// street · concrete · urban lines' },
  { n: '02', label: 'Park',    mood: 'garage',  image: 'media/builds.jpg',  h: 720, blurb: 'Bowls, transitions, and quarter pipes. Flow, air, and movement at the skatepark.',                cap: '// park · transitions · flow' },
  { n: '03', label: 'Builds',  mood: 'leather', image: 'media/apparel.jpg', h: 720, blurb: 'Frame geometry, bar height, tire width, peg setup. Every BMX build is a deliberate statement.',   cap: '// build · complete setup · rider spec' },
  { n: '04', label: 'Culture', mood: 'road',    image: 'media/culture.jpg', h: 560, blurb: 'Riders, crews, clips, and sessions. The visual world that makes the category magnetic.',           cap: '// culture · session · scene' },
];

const DesktopCulture = () => (
  <div id="culture" style={{ background: CH.bg, padding: '40px 56px 180px' }}>
    {/* section header — runs across the page */}
    <div style={{
      display: 'flex', alignItems: 'flex-end', justifyContent: 'space-between',
      paddingBottom: 56, borderBottom: `1px solid ${CH.inkFaint}`, marginBottom: 64,
    }}>
      <div>
        <Eyebrow>03 — The Ride</Eyebrow>
        <h2 style={{
          marginTop: 28, marginBottom: 0, maxWidth: 900,
          fontFamily: 'Oswald, sans-serif', fontWeight: 500,
          fontSize: 96, lineHeight: 0.95, letterSpacing: -0.8,
          color: CH.ink,
        }}>
          Four corners of the<br />
          <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, fontWeight: 400, color: CH.inkDim }}>scene.</span>
        </h2>
      </div>
      <div style={{
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
        letterSpacing: 2.2, textTransform: 'uppercase', color: CH.inkLow,
        textAlign: 'right', paddingBottom: 12,
      }}>
        Street · Park<br/>Builds · Culture
      </div>
    </div>

    {/* asymmetric grid of 4 — staircase */}
    <div style={{
      display: 'grid', gridTemplateColumns: 'repeat(2, 1fr)',
      columnGap: 24, rowGap: 64,
    }}>
      {cultureItems.map((c, i) => (
        <div key={c.label} style={{ marginTop: i % 2 === 1 ? 64 : 0 }}>
          <Plate mood={c.mood} image={c.image} caption={c.cap} style={{ height: c.h }} />
          <div style={{
            marginTop: 22, display: 'flex', alignItems: 'baseline', justifyContent: 'space-between',
          }}>
            <div style={{ display: 'flex', alignItems: 'baseline', gap: 18 }}>
              <span style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 11,
                letterSpacing: 2, color: CH.lime,
              }}>N° {c.n}</span>
              <h3 style={{
                fontFamily: 'Oswald, sans-serif', fontWeight: 500,
                fontSize: 44, lineHeight: 1, letterSpacing: -0.3,
                color: CH.ink, margin: 0,
              }}>{c.label}</h3>
            </div>
            <a href="#inquiry" style={{
              fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
              letterSpacing: 2.2, textTransform: 'uppercase',
              color: CH.inkDim, textDecoration: 'none',
            }}>Enter →</a>
          </div>
          <p style={{
            marginTop: 14, marginBottom: 0, maxWidth: 440,
            fontSize: 15.5, color: CH.inkDim,
          }}>{c.blurb}</p>
        </div>
      ))}
    </div>
  </div>
);

const DesktopManifesto = () => (
  <Plate id="manifesto" image="media/manifesto.jpg" caption="// 04 · manifesto · concrete · momentum" style={{ height: 700 }}>
    {/* darken to make headline readable on top of the photo */}
    <div style={{
      position: 'absolute', inset: 0,
      background: 'radial-gradient(ellipse 70% 60% at 50% 50%, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.65) 100%)',
    }} />
    <div style={{
      position: 'absolute', inset: 0,
      display: 'flex', alignItems: 'center', justifyContent: 'center',
      flexDirection: 'column',
    }}>
      <div style={{ marginBottom: 56 }}><Eyebrow style={{ color: CH.lime }}>04 — Manifesto</Eyebrow></div>
      <h2 style={{
        margin: 0, textAlign: 'center',
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 128, lineHeight: 0.92, letterSpacing: -1.2,
        color: CH.ink, textTransform: 'uppercase',
      }}>
        Street shaped.<br />
        Park proven.<br />
        <span style={{ color: CH.lime, fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, fontWeight: 400, textTransform: 'none' }}>Rider owned.</span>
      </h2>
      <div style={{
        marginTop: 56, display: 'flex', alignItems: 'center', gap: 18,
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
        letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
      }}>
        <span style={{ width: 32, height: 1, background: CH.inkFaint }} />
        <span>Carved in concrete, steel, and momentum</span>
        <span style={{ width: 32, height: 1, background: CH.inkFaint }} />
      </div>
    </div>
  </Plate>
);

/* Artifact card — looks like a physical brand object (patch, tag, plate, stamp).
   Adds corner ticks, stitched border option, lime label tab, and subtle texture. */
const Artifact = ({ label, footnote, stitched = false, accentTab = false, children, style = {}, contentStyle = {} }) => (
  <div style={{
    position: 'relative', background: CH.bg,
    border: `1px solid ${CH.inkFaint}`,
    boxShadow: 'inset 0 0 80px rgba(0,0,0,0.55), inset 0 1px 0 rgba(245,247,248,0.04)',
    ...style,
  }}>
    {/* corner ticks */}
    {[
      { top: 8, left: 8, b: '1px 0 0 1px' },
      { top: 8, right: 8, b: '1px 1px 0 0' },
      { bottom: 8, left: 8, b: '0 0 1px 1px' },
      { bottom: 8, right: 8, b: '0 1px 1px 0' },
    ].map((c, i) => (
      <span key={i} style={{
        position: 'absolute', width: 10, height: 10,
        borderStyle: 'solid', borderColor: CH.limeDim, borderWidth: c.b,
        ...c,
      }} />
    ))}
    {/* stitched inner border */}
    {stitched && (
      <div style={{
        position: 'absolute', inset: 18, pointerEvents: 'none',
        border: `1px dashed rgba(198,255,58,0.28)`,
      }} />
    )}
    {/* grain wash */}
    <div style={{
      position: 'absolute', inset: 0, pointerEvents: 'none',
      backgroundImage: grainSVG, opacity: 0.18, mixBlendMode: 'overlay',
    }} />
    {/* lime tab in top-left if accentTab */}
    {accentTab && (
      <span style={{
        position: 'absolute', top: -1, left: 32, width: 22, height: 4,
        background: CH.lime,
      }} />
    )}
    {/* content */}
    <div style={{
      position: 'relative', zIndex: 1, height: '100%',
      display: 'flex', flexDirection: 'column', ...contentStyle,
    }}>
      <div style={{
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
        letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
        display: 'flex', alignItems: 'center', gap: 10,
      }}>
        <span style={{ width: 10, height: 1, background: CH.limeDim }} />
        {label}
      </div>
      {children}
      {footnote && (
        <div style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
          letterSpacing: 2.2, textTransform: 'uppercase', color: CH.inkLow,
        }}>{footnote}</div>
      )}
    </div>
  </div>
);

const presenceNotes = [
  { n: '01', t: 'The Frame',   kind: 'stance',  d: 'Compact geometry, tight angles, and real BMX proportions. The frame sets everything.' },
  { n: '02', t: 'The Wheels',  kind: 'metal',   d: '20-inch circles built for raw impact. Steel rims, fat rubber, and concrete landings.' },
  { n: '03', t: 'The Bars',    kind: 'tank',    d: 'Rise, sweep, and reach. The cockpit of the bike is where style meets control.' },
  { n: '04', t: 'The Pegs',    kind: 'leather', d: 'Steel on the axle. Simple, raw, and the fundamental vocabulary of street riding.' },
  { n: '05', t: 'The Spot',    kind: 'shop',    d: 'A ledge, a rail, a bowl, a bank. The city is the park and the spot is everything.' },
  { n: '06', t: 'The Session', kind: 'road',    d: 'The crew, the run, the clip. BMX is a social art form built around repetition.' },
];

const PresenceGlyph = ({ kind, size = 44 }) => {
  const s = size; const cx = s/2; const cy = s/2;
  const stroke = CH.lime; const dim = CH.inkLow;
  switch (kind) {
    case 'stance': // low silhouette: wheel · frame · wheel hint
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <line x1={s*0.08} y1={s*0.82} x2={s*0.92} y2={s*0.82} stroke={dim} strokeWidth="1" />
          <circle cx={s*0.26} cy={s*0.66} r={s*0.14} fill="none" stroke={stroke} strokeWidth="1.2" />
          <circle cx={s*0.74} cy={s*0.66} r={s*0.14} fill="none" stroke={stroke} strokeWidth="1.2" />
          <line x1={s*0.30} y1={s*0.58} x2={s*0.70} y2={s*0.58} stroke={CH.ink} strokeWidth="1.4" />
          <line x1={s*0.42} y1={s*0.58} x2={s*0.46} y2={s*0.48} stroke={CH.ink} strokeWidth="1" />
        </svg>
      );
    case 'tank': // teardrop — reinterpreted as handlebar profile
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <path d={`M ${s*0.18} ${cy} Q ${s*0.30} ${s*0.30}, ${s*0.62} ${s*0.30} Q ${s*0.86} ${s*0.32}, ${s*0.82} ${cy} Q ${s*0.78} ${s*0.72}, ${s*0.50} ${s*0.72} Q ${s*0.22} ${s*0.72}, ${s*0.18} ${cy} Z`} fill="none" stroke={stroke} strokeWidth="1.2" />
          <path d={`M ${s*0.28} ${s*0.42} Q ${s*0.42} ${s*0.36}, ${s*0.58} ${s*0.40}`} fill="none" stroke={dim} strokeWidth="0.8" opacity="0.7" />
          <circle cx={s*0.66} cy={cy} r="1.6" fill={stroke} />
        </svg>
      );
    case 'metal': // spoked wheel
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <circle cx={cx} cy={cy} r={s*0.36} fill="none" stroke={stroke} strokeWidth="1.2" />
          <circle cx={cx} cy={cy} r={s*0.06} fill={stroke} />
          {[0, 45, 90, 135].map(a => {
            const rad = (a * Math.PI) / 180;
            const x1 = cx + Math.cos(rad) * s*0.06;
            const y1 = cy + Math.sin(rad) * s*0.06;
            const x2 = cx + Math.cos(rad) * s*0.36;
            const y2 = cy + Math.sin(rad) * s*0.36;
            const x1b = cx - Math.cos(rad) * s*0.06;
            const y1b = cy - Math.sin(rad) * s*0.06;
            const x2b = cx - Math.cos(rad) * s*0.36;
            const y2b = cy - Math.sin(rad) * s*0.36;
            return (
              <g key={a}>
                <line x1={x1} y1={y1} x2={x2} y2={y2} stroke={dim} strokeWidth="0.8" />
                <line x1={x1b} y1={y1b} x2={x2b} y2={y2b} stroke={dim} strokeWidth="0.8" />
              </g>
            );
          })}
        </svg>
      );
    case 'leather': // stitched panel — reinterpreted as peg cross-section
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <rect x={s*0.16} y={s*0.22} width={s*0.68} height={s*0.56} fill="none" stroke={dim} strokeWidth="1" />
          <rect x={s*0.22} y={s*0.28} width={s*0.56} height={s*0.44} fill="none" stroke={stroke} strokeWidth="0.8" strokeDasharray="2 3" />
          <line x1={s*0.50} y1={s*0.30} x2={s*0.50} y2={s*0.70} stroke={dim} strokeWidth="0.6" strokeDasharray="2 3" />
        </svg>
      );
    case 'shop': // pendant + floor — reinterpreted as spot marker
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <line x1={cx} y1={s*0.08} x2={cx} y2={s*0.36} stroke={dim} strokeWidth="1" />
          <circle cx={cx} cy={s*0.42} r={s*0.07} fill={stroke} />
          <path d={`M ${cx} ${s*0.48} L ${s*0.28} ${s*0.80} L ${s*0.72} ${s*0.80} Z`} fill={stroke} opacity="0.16" stroke={stroke} strokeWidth="0.6" />
          <line x1={s*0.10} y1={s*0.82} x2={s*0.90} y2={s*0.82} stroke={dim} strokeWidth="1" />
        </svg>
      );
    case 'road': // perspective lines to vanishing point — session / skatepark
      return (
        <svg viewBox={`0 0 ${s} ${s}`} width={s} height={s}>
          <circle cx={cx} cy={s*0.38} r="1.4" fill={stroke} />
          <line x1={s*0.08} y1={s*0.86} x2={cx} y2={s*0.38} stroke={dim} strokeWidth="1" />
          <line x1={s*0.92} y1={s*0.86} x2={cx} y2={s*0.38} stroke={dim} strokeWidth="1" />
          <line x1={s*0.32} y1={s*0.86} x2={s*0.46} y2={s*0.48} stroke={stroke} strokeWidth="1.2" />
          <line x1={s*0.42} y1={s*0.86} x2={s*0.49} y2={s*0.56} stroke={stroke} strokeWidth="1" strokeDasharray="3 3" />
        </svg>
      );
  }
};

const DesktopIdentity = () => (
  <div id="presence" style={{ background: CH.panel, padding: '160px 56px 160px', position: 'relative' }}>
    {/* faint texture wash behind */}
    <div style={{
      position: 'absolute', inset: 0, pointerEvents: 'none',
      backgroundImage: grainSVG, opacity: 0.18, mixBlendMode: 'overlay',
    }} />

    {/* header */}
    <div style={{ position: 'relative', display: 'flex', alignItems: 'flex-end', justifyContent: 'space-between', marginBottom: 72, gap: 60 }}>
      <div>
        <Eyebrow>05 — The Identity</Eyebrow>
        <h2 style={{
          marginTop: 28, marginBottom: 0,
          fontFamily: 'Oswald, sans-serif', fontWeight: 500,
          fontSize: 80, lineHeight: 0.96, letterSpacing: -0.6,
          color: CH.ink,
        }}>
          The bike holds the line.<br/>
          <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>The scene breathes around it.</span>
        </h2>
      </div>
      <div style={{
        maxWidth: 420,
        fontSize: 15.5, lineHeight: 1.65, color: CH.inkDim, paddingBottom: 12,
      }}>
        A BMX setup doesn't need to announce itself. Clean geometry, proper tire selection, and a dialed cockpit tell the story without words.
      </div>
    </div>

    {/* Six presence cards */}
    <div style={{
      position: 'relative', marginTop: 24,
      display: 'grid', gridTemplateColumns: 'repeat(3, 1fr)', gap: 24,
    }}>
      {presenceNotes.map((m) => (
        <Artifact
          key={m.t}
          label={`N° ${m.n}`}
          contentStyle={{ padding: '28px 28px 24px', justifyContent: 'space-between', minHeight: 240 }}
        >
          <div style={{
            marginTop: 18,
            display: 'flex', alignItems: 'center', gap: 18,
          }}>
            <PresenceGlyph kind={m.kind} size={44} />
            <h3 style={{
              margin: 0, whiteSpace: 'nowrap',
              fontFamily: 'Oswald, sans-serif', fontWeight: 500,
              fontSize: 30, letterSpacing: 0.2, color: CH.ink,
            }}>{m.t}</h3>
          </div>
          <p style={{
            margin: 0, marginTop: 18,
            fontSize: 14.5, lineHeight: 1.55, color: CH.inkDim,
          }}>{m.d}</p>
        </Artifact>
      ))}
    </div>

    {/* bottom strip — brand line */}
    <div style={{
      position: 'relative', marginTop: 64, paddingTop: 28,
      borderTop: `1px solid ${CH.inkFaint}`,
      display: 'flex', alignItems: 'center', justifyContent: 'space-between',
      fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
      letterSpacing: 2.4, textTransform: 'uppercase', color: CH.inkLow,
    }}>
      <span>Street concrete · Park transitions · Steel frames · Raw contact</span>
      <span>20-inch wheels · Tight geometry · Rider spec</span>
      <span style={{ color: CH.lime }}>Built for the scene · Made to session</span>
    </div>
  </div>
);

const DesktopContact = () => {
  const { values, status, errorMsg, set, handleSubmit } = useInquiryForm();
  const formFields = [
    { label: 'Name',  name: 'name',  type: 'text',  required: true, hint: 'Required', placeholder: 'First & last' },
    { label: 'Email', name: 'email', type: 'email', required: true, hint: 'Required', placeholder: 'you@company.com' },
  ];
  return (
    <div id="inquiry" style={{
      background: CH.bg, padding: '180px 56px',
      display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 96,
    }}>
      <div>
        <Eyebrow>06 — Inquire</Eyebrow>
        <h2 style={{
          marginTop: 28, marginBottom: 36, maxWidth: 580,
          fontFamily: 'Oswald, sans-serif', fontWeight: 500,
          fontSize: 96, lineHeight: 0.95, letterSpacing: -0.8,
          color: CH.ink,
        }}>
          Start a<br/>
          <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>conversation.</span>
        </h2>
        <p style={{ maxWidth: 440, fontSize: 16, lineHeight: 1.6, color: CH.inkDim, margin: 0 }}>
          This is a speculative brand concept built to show the potential of{' '}
          <span style={{ color: CH.ink }}>bmxbike.info</span>. The domain is available
          for acquisition — ready to become an editorial destination, a community platform,
          or a BMX brand home.
        </p>
        <div style={{
          marginTop: 72, paddingTop: 32, borderTop: `1px solid ${CH.inkFaint}`,
          display: 'grid', gridTemplateColumns: '1fr 1fr 1fr', gap: 24, maxWidth: 520,
        }}>
          {[
            { l: 'Domain',    v: 'BMXBike.info' },
            { l: 'Direction', v: 'BMX culture / editorial' },
            { l: 'Status',    v: 'Open to serious inquiries' },
          ].map(b => (
            <div key={b.l}>
              <div style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
                letterSpacing: 2.2, textTransform: 'uppercase', color: CH.lime,
                display: 'flex', alignItems: 'center', gap: 8,
              }}>
                <span style={{ width: 8, height: 1, background: CH.limeDim }} />
                {b.l}
              </div>
              <div style={{
                marginTop: 12,
                fontFamily: 'Oswald, sans-serif', fontSize: 22, color: CH.ink, lineHeight: 1.2,
              }}>
                {b.v}
              </div>
            </div>
          ))}
        </div>

        {/* honesty note */}
        <div style={{
          marginTop: 40, maxWidth: 460,
          display: 'flex', gap: 14, alignItems: 'flex-start',
          paddingTop: 18, borderTop: `1px dashed ${CH.inkFaint}`,
        }}>
          <span style={{
            marginTop: 4, width: 6, height: 6, background: CH.lime, flexShrink: 0,
          }} />
          <div style={{
            fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
            letterSpacing: 1.6, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.7,
          }}>
            This concept is illustrative. No affiliation with any bicycle manufacturer, BMX team, or brand.
          </div>
        </div>
      </div>

      <form onSubmit={handleSubmit} style={{ paddingTop: 80, position: 'relative' }}>
        {/* honeypot */}
        <div style={{ position: 'absolute', left: '-9999px', height: 0, overflow: 'hidden' }} aria-hidden="true">
          <input type="text" name="website" value={values.website} onChange={set('website')} tabIndex={-1} autoComplete="off" />
        </div>
        {status === 'success' ? (
          <div style={{ padding: '56px 0', fontFamily: 'IBM Plex Mono, monospace',
            fontSize: 12, letterSpacing: 2, textTransform: 'uppercase', color: CH.lime, lineHeight: 1.8 }}>
            {SITE.successMessage}
          </div>
        ) : (
          <>
            {status === 'error' && (
              <div style={{ marginBottom: 20, fontFamily: 'IBM Plex Mono, monospace',
                fontSize: 11, letterSpacing: 1.6, textTransform: 'uppercase',
                color: 'rgba(200,90,60,0.9)', lineHeight: 1.6 }}>
                {errorMsg}
              </div>
            )}
            {formFields.map(f => (
              <div key={f.label} style={{ marginBottom: 30 }}>
                <div style={{
                  fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
                  letterSpacing: 2.2, textTransform: 'uppercase', color: CH.lime,
                  marginBottom: 12, display: 'flex', justifyContent: 'space-between',
                }}>
                  <span>{f.label}</span>
                  <span style={{ color: CH.inkLow }}>{f.hint}</span>
                </div>
                <input
                  type={f.type}
                  name={f.name}
                  value={values[f.name]}
                  onChange={set(f.name)}
                  placeholder={f.placeholder}
                  required={f.required}
                  style={{
                    background: 'none', border: 'none', width: '100%',
                    borderBottom: `1px solid ${CH.inkFaint}`,
                    paddingBottom: 14,
                    fontFamily: 'Oswald, sans-serif', fontSize: 26,
                    color: CH.ink, letterSpacing: 0.2,
                    outline: 'none', caretColor: CH.lime,
                  }}
                />
              </div>
            ))}
            <div style={{ marginBottom: 44 }}>
              <div style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
                letterSpacing: 2.2, textTransform: 'uppercase', color: CH.lime,
                marginBottom: 12, display: 'flex', justifyContent: 'space-between',
              }}>
                <span>Message</span>
                <span style={{ color: CH.inkLow }}>What you would build</span>
              </div>
              <textarea
                name="message"
                value={values.message}
                onChange={set('message')}
                placeholder={SITE.messagePlaceholder}
                required
                style={{
                  background: 'none', border: 'none', width: '100%',
                  borderBottom: `1px solid ${CH.inkFaint}`,
                  paddingBottom: 14, minHeight: 140, resize: 'vertical',
                  fontFamily: 'Oswald, sans-serif', fontSize: 26,
                  color: CH.ink, letterSpacing: 0.2,
                  outline: 'none', caretColor: CH.lime,
                }}
              />
            </div>
            <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', gap: 24 }}>
              <button
                type="submit"
                disabled={status === 'submitting'}
                style={{
                  fontFamily: 'IBM Plex Mono, monospace', fontSize: 11.5,
                  letterSpacing: 2.4, textTransform: 'uppercase',
                  color: CH.bg, background: status === 'submitting' ? CH.steel : CH.lime,
                  padding: '20px 32px', border: 'none',
                  cursor: status === 'submitting' ? 'default' : 'pointer',
                  display: 'inline-flex', alignItems: 'center', gap: 16,
                  opacity: status === 'submitting' ? 0.7 : 1,
                }}
              >
                {status === 'submitting' ? 'Sending…' : 'Start the Conversation'}
                <span style={{ width: 22, height: 1, background: CH.bg, display: 'inline-block' }} />
              </button>
              <div style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
                letterSpacing: 1.8, textTransform: 'uppercase', color: CH.inkLow,
                textAlign: 'right', lineHeight: 1.6, maxWidth: 220,
              }}>
                Concept shown for<br/>illustrative purposes.
              </div>
            </div>
          </>
        )}
      </form>
    </div>
  );
};

const DesktopFooter = () => (
  <div id="footer" style={{
    background: CH.panel, padding: '64px 56px 48px',
    borderTop: `1px solid ${CH.inkFaint}`,
  }}>
    <div style={{
      display: 'grid', gridTemplateColumns: '1.1fr 1fr 1fr 1fr', gap: 56,
      paddingBottom: 56,
    }}>
      {/* brand block */}
      <div>
        <div style={{ display: 'flex', alignItems: 'center', gap: 22 }}>
          <CHMark size={48} />
          <div>
            <div style={{
              fontFamily: 'Oswald, sans-serif', fontWeight: 600, fontSize: 28,
              color: CH.ink, lineHeight: 1, letterSpacing: 0.4,
            }}>BMXBike<span style={{ fontWeight: 400, opacity: 0.65, color: CH.lime, fontSize: '0.78em' }}>.info</span></div>
            <div style={{
              marginTop: 8,
              fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
              letterSpacing: 2.2, textTransform: 'uppercase', color: CH.lime,
            }}>Street. Park. Style.</div>
          </div>
        </div>
        <p style={{
          marginTop: 28, marginBottom: 0, maxWidth: 320,
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
          letterSpacing: 1.6, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.7,
        }}>
          This mock brand direction is illustrative. <span style={{ color: CH.inkDim }}>BMXBike.info</span> is independently owned and available for acquisition. Not affiliated with any bicycle manufacturer, BMX team, or brand.
        </p>
      </div>
      {[
        { h: 'Concept', l: [
          { t: 'Brand Direction', href: '#story' },
          { t: 'Visual Identity', href: '#presence' },
          { t: 'Use Cases',       href: '#culture' },
        ]},
        { h: 'Domain', l: [
          { t: 'BMXBike.info',        href: '#inquiry' },
          { t: 'Acquisition Inquiry', href: '#inquiry' },
          { t: 'Contact',             href: '#inquiry' },
        ]},
        { h: 'Note', l: [
          { t: 'Independent Concept',  href: null },
          { t: 'No Brand Affiliation', href: null },
        ]},
      ].map(g => (
        <div key={g.h}>
          <div style={{
            fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
            letterSpacing: 2.2, textTransform: 'uppercase', color: CH.inkLow,
            marginBottom: 18, display: 'flex', alignItems: 'center', gap: 8,
          }}>
            <span style={{ width: 8, height: 1, background: CH.limeDim }} />
            {g.h}
          </div>
          <div style={{ display: 'grid', gap: 10 }}>
            {g.l.map(x => (
              <a key={x.t} href={x.href || undefined} style={{
                fontFamily: 'Oswald, sans-serif', fontSize: 20, color: CH.ink,
                letterSpacing: 0.2, textDecoration: 'none', lineHeight: 1.15,
              }}>{x.t}</a>
            ))}
          </div>
        </div>
      ))}
    </div>
    <div style={{
      paddingTop: 28, borderTop: `1px solid ${CH.inkFaint}`,
      display: 'flex', alignItems: 'center', justifyContent: 'space-between',
      fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
      letterSpacing: 2, textTransform: 'uppercase', color: CH.inkLow,
    }}>
      <span>© MMXXVI · BMXBike.info · Concept presentation</span>
      <span>Independently owned · Available for acquisition</span>
      <span style={{ color: CH.lime }}>Volume One — 001</span>
    </div>
  </div>
);

/* ============================================================
   MOBILE — 390 wide
   ============================================================ */

const Mobile = () => (
  <div style={{
    width: 390, background: CH.bg, color: CH.ink,
    fontFamily: 'Inter, sans-serif', fontSize: 14, lineHeight: 1.55,
    position: 'relative', overflow: 'hidden',
  }}>
    {/* status bar */}
    <div style={{
      height: 44, display: 'flex', alignItems: 'center', justifyContent: 'space-between',
      padding: '0 22px', fontFamily: 'IBM Plex Mono, monospace', fontSize: 11,
      color: CH.ink, fontWeight: 600, position: 'absolute', top: 0, left: 0, right: 0, zIndex: 30,
    }}>
      <span>9:41</span>
      <span style={{ display: 'flex', gap: 6 }}>
        <span>●●●●</span><span>●●</span>
      </span>
    </div>

    {/* nav */}
    <div style={{
      position: 'absolute', top: 44, left: 0, right: 0, zIndex: 20,
      padding: '16px 22px', display: 'flex', alignItems: 'center', justifyContent: 'space-between',
    }}>
      <Wordmark size={18} />
      <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
        <span style={{ width: 22, height: 1, background: CH.ink }} />
        <span style={{ width: 16, height: 1, background: CH.ink, alignSelf: 'flex-end' }} />
      </div>
    </div>

    {/* hero */}
    <Plate id="m-hero" image="media/hero.jpg" imagePos="center top" caption="// 01 · bmx · street" style={{ height: 720, paddingTop: 100 }}>
      <div style={{
        position: 'absolute', left: 0, right: 0, bottom: 0, height: 420,
        background: 'linear-gradient(180deg, transparent 0%, rgba(23,26,30,0.5) 50%, rgba(23,26,30,0.9) 100%)',
      }} />
      <div style={{
        position: 'absolute', left: 22, bottom: 56, right: 22,
      }}>
        <div style={{ marginBottom: 18 }}><Eyebrow>Independent BMX Editorial Concept</Eyebrow></div>
        <h1 style={{
          fontFamily: 'Oswald, sans-serif', fontWeight: 600,
          fontSize: 64, lineHeight: 0.9, letterSpacing: -0.5,
          margin: 0, color: CH.ink, textTransform: 'uppercase',
          textShadow: '0 2px 24px rgba(0,0,0,0.72), 0 0 60px rgba(0,0,0,0.5)',
        }}>
          Street.<br/>
          <span style={{ fontWeight: 400 }}>Park.</span><br/>
          <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400, textTransform: 'none' }}>Style.</span>
        </h1>
        <p style={{ marginTop: 52, color: CH.inkDim, fontSize: 14, lineHeight: 1.55 }}>
          A BMX editorial destination built around riding culture and the visual world that makes the category magnetic.
        </p>
        <a href="#story" style={{
          display: 'inline-flex', alignItems: 'center', gap: 12,
          marginTop: 24, padding: '14px 22px',
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 10.5,
          letterSpacing: 2.2, textTransform: 'uppercase',
          color: CH.bg, background: CH.lime, textDecoration: 'none',
        }}>
          Explore the Scene
          <span style={{ width: 16, height: 1, background: CH.bg }} />
        </a>
      </div>
    </Plate>

    {/* story */}
    <div id="m-story" style={{ padding: '88px 22px 64px' }}>
      <Eyebrow>02 — The Concept</Eyebrow>
      <h2 style={{
        marginTop: 22, marginBottom: 20,
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 44, lineHeight: 0.98, letterSpacing: -0.3,
        color: CH.ink,
      }}>
        Built for the scene that makes bikes <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>their own.</span>
      </h2>
      <p style={{ color: CH.inkDim, fontSize: 14.5, lineHeight: 1.6 }}>
        BMXBike.info is built for the riders, builders, and culture that turn 20-inch bikes into identity — setups, terrain, street sessions, and the visual world behind the scene.
      </p>
      <Plate image="media/story.jpg" caption="// 02 · bmx · editorial" style={{ height: 320, marginTop: 32 }} />
    </div>

    {/* culture */}
    <div id="m-culture" style={{ padding: '0 22px 64px' }}>
      <Eyebrow>03 — The Ride</Eyebrow>
      <h2 style={{
        marginTop: 22, marginBottom: 32,
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 52, lineHeight: 0.95, letterSpacing: -0.4,
        color: CH.ink,
      }}>
        Four corners<br/>of the <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.inkDim, fontWeight: 400 }}>scene.</span>
      </h2>
      <div style={{ display: 'grid', gap: 36 }}>
        {cultureItems.map(c => (
          <div key={c.label}>
            <Plate mood={c.mood} image={c.image} caption={c.cap} style={{ height: 280 }} />
            <div style={{ marginTop: 14, display: 'flex', alignItems: 'baseline', gap: 12 }}>
              <span style={{
                fontFamily: 'IBM Plex Mono, monospace', fontSize: 10,
                letterSpacing: 2, color: CH.lime,
              }}>N° {c.n}</span>
              <h3 style={{
                fontFamily: 'Oswald, sans-serif', fontWeight: 500,
                fontSize: 32, lineHeight: 1, color: CH.ink, margin: 0,
              }}>{c.label}</h3>
            </div>
            <p style={{ marginTop: 8, color: CH.inkDim, fontSize: 14 }}>{c.blurb}</p>
          </div>
        ))}
      </div>
    </div>

    {/* manifesto */}
    <Plate id="m-manifesto" image="media/manifesto.jpg" caption="// 04 · manifesto" style={{ height: 520 }}>
      <div style={{
        position: 'absolute', inset: 0,
        background: 'radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.45) 60%, rgba(0,0,0,0.7) 100%)',
      }} />
      <div style={{ position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center', flexDirection: 'column', padding: '0 22px' }}>
        <div style={{ marginBottom: 26 }}><Eyebrow>04 — Manifesto</Eyebrow></div>
        <h2 style={{
          margin: 0, textAlign: 'center',
          fontFamily: 'Oswald, sans-serif', fontWeight: 500,
          fontSize: 56, lineHeight: 0.92, letterSpacing: -0.4,
          color: CH.ink, textTransform: 'uppercase',
        }}>
          Street shaped.<br/>
          Park proven.<br/>
          <span style={{ color: CH.lime, fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, fontWeight: 400, textTransform: 'none' }}>Rider owned.</span>
        </h2>
      </div>
    </Plate>

    {/* presence */}
    <div id="m-presence" style={{ background: CH.panel, padding: '64px 22px' }}>
      <Eyebrow>05 — The Identity</Eyebrow>
      <h2 style={{
        marginTop: 22, marginBottom: 16,
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 40, lineHeight: 0.96, letterSpacing: -0.3,
        color: CH.ink,
      }}>
        The bike holds the line.<br/>
        <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>The scene breathes around it.</span>
      </h2>
      <p style={{ color: CH.inkDim, fontSize: 13.5, lineHeight: 1.6, marginBottom: 28 }}>
        A BMX setup doesn't need to announce itself. Clean geometry, proper tire selection, and a dialed cockpit tell the story.
      </p>
      {/* presence cards — 2-col grid */}
      <div style={{ display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 10 }}>
        {presenceNotes.map((m) => (
          <Artifact
            key={m.t}
            label={`N° ${m.n}`}
            contentStyle={{ padding: 16, justifyContent: 'space-between', minHeight: 180 }}
          >
            <div style={{ marginTop: 12, display: 'flex', alignItems: 'center', gap: 10 }}>
              <PresenceGlyph kind={m.kind} size={32} />
              <h3 style={{
                margin: 0, whiteSpace: 'nowrap',
                fontFamily: 'Oswald, sans-serif', fontWeight: 500,
                fontSize: 20, letterSpacing: 0.2, color: CH.ink,
              }}>{m.t}</h3>
            </div>
            <p style={{
              margin: 0, marginTop: 12,
              fontSize: 12.5, lineHeight: 1.5, color: CH.inkDim,
            }}>{m.d}</p>
          </Artifact>
        ))}
      </div>

      {/* brand line strip */}
      <div style={{
        marginTop: 18, padding: '18px 18px',
        border: `1px solid ${CH.inkFaint}`, background: CH.bg,
        display: 'grid', gap: 10,
      }}>
        <div style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 9,
          letterSpacing: 2, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.7,
        }}>Street concrete · Park transitions<br/>Steel frames · Raw contact</div>
        <div style={{
          fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
          letterSpacing: 2, textTransform: 'uppercase', color: CH.lime,
        }}>Built for the scene · Made to session</div>
      </div>
    </div>

    {/* contact */}
    <div id="m-inquiry" style={{ padding: '64px 22px' }}>
      <Eyebrow>06 — Inquire</Eyebrow>
      <h2 style={{
        marginTop: 22, marginBottom: 20,
        fontFamily: 'Oswald, sans-serif', fontWeight: 500,
        fontSize: 56, lineHeight: 0.95, letterSpacing: -0.5,
        color: CH.ink,
      }}>
        Start a<br/>
        <span style={{ fontStyle: 'italic', fontFamily: '"Instrument Serif", serif', fontSize: '0.82em', lineHeight: 1.05, color: CH.lime, fontWeight: 400 }}>conversation.</span>
      </h2>
      <p style={{ color: CH.inkDim, fontSize: 13.5, lineHeight: 1.6 }}>
        This is a speculative brand concept. <span style={{ color: CH.ink }}>BMXBike.info</span> is available for acquisition — editorial platform, community hub, or BMX brand home.
      </p>

      <div style={{
        marginTop: 32, paddingTop: 22, borderTop: `1px solid ${CH.inkFaint}`,
        display: 'grid', gap: 18,
      }}>
        {[
          { l: 'Domain',    v: 'BMXBike.info' },
          { l: 'Direction', v: 'BMX culture / editorial' },
          { l: 'Status',    v: 'Open to serious inquiries' },
        ].map(b => (
          <div key={b.l}>
            <div style={{
              fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
              letterSpacing: 2, textTransform: 'uppercase', color: CH.lime,
            }}>{b.l}</div>
            <div style={{
              marginTop: 4,
              fontFamily: 'Oswald, sans-serif', fontSize: 20, color: CH.ink, lineHeight: 1.2,
            }}>{b.v}</div>
          </div>
        ))}
      </div>

      <MobileContactForm />
    </div>

    {/* footer */}
    <div id="m-footer" style={{ background: CH.panel, padding: '36px 22px 32px', borderTop: `1px solid ${CH.inkFaint}` }}>
      <div style={{ display: 'flex', alignItems: 'center', gap: 14 }}>
        <CHMark size={36} />
        <div>
          <div style={{ fontFamily: 'Oswald, sans-serif', fontWeight: 600, fontSize: 22, color: CH.ink, lineHeight: 1 }}>BMXBike<span style={{ fontWeight: 400, opacity: 0.65, color: CH.lime, fontSize: '0.78em' }}>.info</span></div>
          <div style={{ marginTop: 6, fontFamily: 'IBM Plex Mono, monospace', fontSize: 9, letterSpacing: 2, textTransform: 'uppercase', color: CH.lime }}>Street. Park. Style.</div>
        </div>
      </div>
      <p style={{
        marginTop: 22, marginBottom: 0,
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 9.5,
        letterSpacing: 1.5, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.7,
      }}>
        This mock brand direction is illustrative. <span style={{ color: CH.inkDim }}>BMXBike.info</span> is independently owned and available for acquisition. Not affiliated with any bicycle manufacturer, BMX team, or brand.
      </p>
      <div style={{
        marginTop: 28, display: 'grid', gridTemplateColumns: '1fr 1fr', gap: 24,
      }}>
        {[
          { h: 'Concept', l: [
            { t: 'Brand Direction', href: '#story' },
            { t: 'Visual Identity', href: '#presence' },
            { t: 'Use Cases',       href: '#culture' },
          ]},
          { h: 'Domain', l: [
            { t: 'BMXBike.info',        href: '#inquiry' },
            { t: 'Acquisition Inquiry', href: '#inquiry' },
            { t: 'Contact',             href: '#inquiry' },
          ]},
        ].map(g => (
          <div key={g.h}>
            <div style={{
              fontFamily: 'IBM Plex Mono, monospace', fontSize: 9,
              letterSpacing: 2, textTransform: 'uppercase', color: CH.inkLow,
              marginBottom: 12,
            }}>{g.h}</div>
            <div style={{ display: 'grid', gap: 6 }}>
              {g.l.map(x => (
                <a key={x.t} href={x.href} style={{
                  fontFamily: 'Oswald, sans-serif', fontSize: 16, color: CH.ink,
                  letterSpacing: 0.2, lineHeight: 1.2, textDecoration: 'none',
                }}>{x.t}</a>
              ))}
            </div>
          </div>
        ))}
      </div>
      <div style={{
        marginTop: 24, paddingTop: 16, borderTop: `1px solid ${CH.inkFaint}`,
        fontFamily: 'IBM Plex Mono, monospace', fontSize: 9,
        letterSpacing: 2, textTransform: 'uppercase', color: CH.inkLow, lineHeight: 1.8,
      }}>
        © MMXXVI · BMXBike.info<br/>Independent concept · No brand affiliation<br/>
        <span style={{ color: CH.lime }}>Volume One — 001</span>
      </div>
    </div>
  </div>
);

Object.assign(window, { Desktop, Mobile });