/* ═══════════════════════════════════════════════
   BIKECORD — CF Landing Page
   Design System: Editorial Magazine
   Primary: #E12828 · Paper #FAF8F5 · DM Serif Display
   ═══════════════════════════════════════════════ */

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-ui);background:var(--paper-bg);color:var(--ink);line-height:1.6;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}

/* ── Tokens ── */
:root{
  --ink:#0F0F10;
  --ink-dim:#6B6660;
  --paper-bg:#FAF8F5;
  --paper-card:#FFFFFF;
  --paper-fill:#F1EDE6;
  --paper-3:#E4DED3;
  --paper-4:#D5CEC4;
  --rcg-red:#E12828;
  --rcg-red-p:#B81818;
  --rcg-red-tint:#FDECEC;
  --ink-dark:#0A0A0B;

  --font-display:'DM Serif Display',Georgia,serif;
  --font-serif:'Source Serif 4',Georgia,serif;
  --font-ui:'Inter',-apple-system,sans-serif;
  --font-mono:'JetBrains Mono','Courier New',monospace;

  --nav-h:64px;
  --r-sm:12px;
  --r-md:20px;
  --r-lg:32px;
  --phone-w:260px;
  --phone-r:38px;
}

/* ── NAV ── */
#nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 32px;height:var(--nav-h);
  background:rgba(250,248,245,0.82);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid transparent;
  transition:border-color .25s,background .25s;
}
#nav.scrolled{border-color:var(--paper-3);background:rgba(250,248,245,0.97)}
.nav__logo{font-family:var(--font-mono);font-weight:600;font-size:13px;letter-spacing:.12em;display:inline-flex;align-items:center;gap:6px}
.nav__gp{
  font-family:var(--font-ui);font-size:9px;font-weight:800;letter-spacing:.1em;
  line-height:1;padding:3px 5px 2px;border-radius:3px;
  background:var(--rcg-red);color:#fff;
}
.nav__links{display:flex;gap:28px}
.nav__links a{font-size:12px;font-weight:500;letter-spacing:.08em;color:var(--ink-dim);transition:color .15s}
.nav__links a:hover{color:var(--ink)}
.nav__cta{
  font-size:12px;font-weight:600;letter-spacing:.06em;
  padding:8px 18px;border-radius:100px;
  background:var(--ink);color:#fff;
  transition:background .15s;
}
.nav__cta:hover{background:var(--rcg-red)}
.nav__end{display:flex;align-items:center;gap:16px}
.nav__lang{display:flex;align-items:center;gap:9px}
.nav__lang a{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--ink-dim);transition:color .15s}
.nav__lang a:hover{color:var(--ink)}
.nav__lang a.is-active{color:var(--rcg-red);font-weight:600}

/* ── HERO ── */
.hero{
  min-height:100svh;
  background:var(--ink-dark);
  display:flex;align-items:center;
  position:relative;overflow:hidden;
  padding-top:var(--nav-h);
}
.hero__glow{
  position:absolute;border-radius:50%;
  pointer-events:none;transition:transform .06s linear;
}
.hero__glow--a{
  width:640px;height:640px;
  background:radial-gradient(circle,rgba(225,40,40,.28) 0%,transparent 70%);
  top:-100px;left:-80px;
}
.hero__glow--b{
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(225,40,40,.14) 0%,transparent 70%);
  bottom:-60px;right:-60px;
}
.hero__inner{
  position:relative;z-index:1;
  width:100%;max-width:1200px;margin:0 auto;
  padding:80px 40px;
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
}
.hero__text{display:flex;flex-direction:column;gap:28px}
.hero__eyebrow{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.16em;color:var(--rcg-red);text-transform:uppercase;
}
.hero__headline{
  font-family:var(--font-display);font-size:clamp(52px,6vw,84px);
  color:#fff;line-height:1.08;letter-spacing:-.01em;
}
.hero__headline em{font-style:italic;color:var(--rcg-red)}
.hero__sub{font-size:17px;color:rgba(255,255,255,.56);line-height:1.7}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ── PHONE FRAME ── */
.phone{
  width:var(--phone-w);
  border-radius:var(--phone-r);
  border:8px solid #222;
  box-shadow:
    0 0 0 1px #333,
    0 40px 80px rgba(0,0,0,.45),
    0 8px 20px rgba(0,0,0,.25);
  overflow:hidden;
  background:#111;
  position:relative;flex-shrink:0;
}
.phone::before{
  content:'';
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:90px;height:26px;
  background:#222;
  border-radius:0 0 16px 16px;
  z-index:2;
}
.phone img{
  width:100%;height:auto;display:block;
  position:relative;z-index:1;
}
.phone--dark{
  border-color:#1a1a1a;
  box-shadow:0 0 0 1px #2a2a2a,0 40px 80px rgba(0,0,0,.6);
}
.phone--empty{
  height:520px;
  background:#111;
}

/* ── HERO PHONE CLUSTER ── */
.hero__phones{
  position:relative;
  display:flex;justify-content:center;align-items:center;
  height:600px;
}
.phone--back{
  position:absolute;
  transform:rotate(-6deg) translate(-90px, 20px);
  opacity:.85;
  filter:brightness(.88);
  z-index:1;
}
.phone--front{
  position:relative;z-index:2;
  transform:rotate(2deg);
}
.phone--tilt-l{transform:rotate(-6deg) translate(-90px, 20px)}

/* ── BUTTONS ── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 24px;border-radius:100px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  transition:background .15s,color .15s,border-color .15s;
  cursor:pointer;border:2px solid transparent;
}
.btn--primary{background:var(--rcg-red);color:#fff}
.btn--primary:hover{background:var(--rcg-red-p)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn--ghost:hover{border-color:#fff}
.btn--outline{background:transparent;color:var(--ink);border-color:var(--paper-3)}
.btn--outline:hover{border-color:var(--ink)}
.btn--lg{padding:16px 36px;font-size:15px}

/* ── TAB STRIP ── */
.tabstrip{background:var(--paper-fill);border-bottom:1px solid var(--paper-3)}
.tabstrip__inner{
  max-width:1200px;margin:0 auto;padding:0 40px;
  display:flex;gap:0;
}
.tabstrip__inner span{
  padding:16px 28px;
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.1em;
  color:var(--ink-dim);border-bottom:2px solid transparent;
  transition:color .15s,border-color .15s;
  cursor:default;
}
.tabstrip__inner span:hover{color:var(--ink);border-color:var(--rcg-red)}

/* ── FEATURE SECTIONS ── */
.fsec{padding:100px 0}
.fsec--light{background:var(--paper-bg)}
.fsec--paper{background:var(--paper-fill)}
.fsec--ink{background:var(--ink-dark)}
.fsec__inner{
  max-width:1200px;margin:0 auto;padding:0 40px;
  display:grid;grid-template-columns:1fr 1fr;
  gap:80px;align-items:center;
}
.fsec--media-right .fsec__copy{order:1}
.fsec--media-right .fsec__media{order:2}
.fsec--media-left .fsec__copy{order:2}
.fsec--media-left .fsec__media{order:1}

.fsec__label{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.14em;color:var(--rcg-red);text-transform:uppercase;
  margin-bottom:16px;
}
.fsec__label--dim{color:rgba(225,40,40,.7)}
.fsec__title{
  font-family:var(--font-display);font-size:clamp(36px,4vw,52px);
  line-height:1.1;letter-spacing:-.01em;margin-bottom:24px;
}
.fsec__title--light{color:#fff}
.fsec__body{font-size:16px;line-height:1.8;color:var(--ink-dim);margin-bottom:24px}
.fsec__body--muted{color:rgba(255,255,255,.5)}
.fsec__body strong{color:var(--ink);font-weight:600}
.fsec__copy--light .fsec__body--muted strong{color:rgba(255,255,255,.85)}
.fsec__bullets{display:flex;flex-direction:column;gap:10px}
.fsec__bullets li{
  font-size:14px;color:var(--ink-dim);padding-left:16px;position:relative;
}
.fsec__bullets li::before{
  content:'';position:absolute;left:0;top:8px;
  width:6px;height:6px;border-radius:50%;background:var(--rcg-red);
}
.fsec__bullets--light li{color:rgba(255,255,255,.5)}
.fsec__bullets--light li::before{background:var(--rcg-red)}

/* Media container */
.fsec__media{display:flex;justify-content:center;align-items:center}
.fsec__media--duo{
  position:relative;height:580px;
  display:flex;justify-content:center;align-items:center;
}
.fsec__media--duo .phone--back{
  position:absolute;left:0;top:40px;
  transform:rotate(-5deg);
  opacity:.8;filter:brightness(.85);z-index:1;
}
.fsec__media--duo .phone--front{
  position:relative;z-index:2;transform:rotate(3deg);margin-left:60px;
}

/* ── CHIP ROW ── */
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.chip{
  padding:7px 14px;border-radius:100px;
  font-size:12px;font-weight:500;letter-spacing:.04em;
  background:var(--paper-card);border:1.5px solid var(--paper-3);
  color:var(--ink-dim);
  transition:background .15s,color .15s,border-color .15s;
  cursor:default;
}
.chip--active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ── SHARE SHOWCASE (RIDING LOG → web link) ── */
.share-show{
  max-width:1200px;margin:72px auto 0;padding:0 40px;
  display:flex;flex-direction:column;align-items:center;text-align:center;
}
.share-show__eyebrow{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.14em;color:var(--rcg-red);text-transform:uppercase;
  margin-bottom:14px;
}
.share-show__head{
  font-family:var(--font-display);font-size:clamp(26px,3vw,38px);
  line-height:1.15;letter-spacing:-.01em;margin-bottom:16px;
}
.share-show__lead{
  font-size:15px;line-height:1.75;color:var(--ink-dim);
  max-width:580px;margin-bottom:38px;
}
.share-show__lead strong{color:var(--ink);font-weight:600}
/* messenger-style link preview card */
.linkcard{
  width:100%;max-width:520px;
  background:var(--paper-card);
  border:1px solid var(--paper-3);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.12),0 4px 12px rgba(0,0,0,.06);
}
.linkcard__img{width:100%;height:auto;display:block;border-bottom:1px solid var(--paper-3)}
.linkcard__meta{padding:14px 18px;text-align:left}
.linkcard__title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:4px;line-height:1.45}
.linkcard__url{font-family:var(--font-mono);font-size:11px;color:var(--ink-dim);letter-spacing:.02em}
.share-show__note{font-size:13px;color:var(--ink-dim);margin-top:22px}

/* ── STATS ── */
.stats{background:var(--rcg-red);padding:80px 0}
.stats__inner{
  max-width:1200px;margin:0 auto;padding:0 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:40px;
  text-align:center;
}
.stat__num{
  display:block;
  font-family:var(--font-display);font-size:64px;
  color:#fff;line-height:1;margin-bottom:12px;
}
.stat__label{
  font-size:13px;font-weight:500;letter-spacing:.06em;
  color:rgba(255,255,255,.7);
}

/* ── DOWNLOAD ── */
.download{background:var(--ink-dark);padding:120px 0;text-align:center}
.download__inner{max-width:600px;margin:0 auto;padding:0 40px}
.download__title{
  font-family:var(--font-display);font-size:clamp(36px,5vw,56px);
  color:#fff;margin-bottom:16px;
}
.download__sub{color:rgba(255,255,255,.45);font-size:16px;margin-bottom:40px}
.download__btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ── FOOTER ── */
.footer{background:#0A0A0B;padding:40px 0;border-top:1px solid #1e1e1e}
.footer__inner{
  max-width:1200px;margin:0 auto;padding:0 40px;
  display:flex;align-items:center;gap:32px;flex-wrap:wrap;
}
.footer__logo{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:#555}
.footer__nav{display:flex;gap:20px;margin-left:auto}
.footer__nav a{font-size:12px;color:#555;transition:color .15s}
.footer__nav a:hover{color:#aaa}
.footer__nav a.is-active{color:#9a9388}
.footer__copy{font-size:11px;color:#444;width:100%;margin-top:8px}

/* ── SCROLL REVEAL ── */
.reveal{opacity:0;transform:translateY(32px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* ── RESPONSIVE ── */
@media(max-width:900px){
  .hero__inner{grid-template-columns:1fr;gap:48px;padding:60px 24px;text-align:center}
  .hero__actions{justify-content:center}
  .hero__phones{height:440px}
  .phone--back{transform:rotate(-5deg) translate(-70px,16px)}
  :root{--phone-w:210px}

  .fsec{padding:72px 0}
  .fsec__inner{grid-template-columns:1fr;gap:48px;padding:0 24px}
  .fsec--media-right .fsec__copy,
  .fsec--media-right .fsec__media,
  .fsec--media-left .fsec__copy,
  .fsec--media-left .fsec__media{order:unset}
  .fsec__media--duo{height:480px}
  .fsec__media--duo .phone--back{left:-20px}
  .share-show{margin-top:56px;padding:0 24px}

  .stats__inner{grid-template-columns:repeat(2,1fr);gap:32px}
  .stat__num{font-size:48px}

  .tabstrip__inner{padding:0 16px;overflow-x:auto;gap:0}
  .tabstrip__inner span{padding:14px 20px;white-space:nowrap}

  .nav__links{display:none}
  #nav{padding:0 20px}
}

@media(max-width:560px){
  .hero__headline{font-size:44px}
  .hero__phones{height:360px}
  :root{--phone-w:180px}
  .phone--back{transform:rotate(-5deg) translate(-56px,12px)}

  .stats__inner{grid-template-columns:1fr 1fr}
  .stat__num{font-size:40px}

  .fsec__media--duo{height:400px}
  .fsec__media--duo .phone--front{margin-left:40px}
  .fsec__media--duo .phone--back{left:-30px}
}