/* chrome v2 — header + footer PREVIEW (2026-09-14). Loaded only by preview-chrome.html until Namrata approves. */
:root{--c2-ink:#18181B;--c2-text:#3F3A36;--c2-grey:#5E5953;--c2-font:"Inter","IBM Plex Sans",system-ui,-apple-system,sans-serif;--c2-mono:"JetBrains Mono",ui-monospace,Menlo,monospace}
/* ---------- header ---------- */
body.chrome2 .nav-links{gap:30px;font-size:15px;font-weight:450}
body.chrome2 .nav-links a{position:relative;color:var(--c2-text);text-shadow:none}
body.chrome2 .nav-links a:hover{color:var(--c2-ink)}
body.chrome2 .nav-links a.active{color:var(--c2-ink);font-weight:500}
@media(min-width:901px){body.chrome2 .nav-links a.active::after{content:"";position:absolute;left:50%;bottom:-9px;width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:var(--c2-ink)}}
body.chrome2 .nav-join{color:var(--c2-text);font-size:15px}
body.chrome2 .nav-join:hover{color:var(--c2-ink)}
/* section tab bar becomes a matching pill tucked under the header pill */
@media(min-width:901px){
  body.chrome2 .spy{top:84px;background:transparent;border:0;backdrop-filter:none;-webkit-backdrop-filter:none;display:flex;justify-content:center;pointer-events:none}
  body.chrome2 .spy-inner{pointer-events:auto;background:rgba(255,255,255,.9);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border:1px solid rgba(26,24,22,.07);border-radius:999px;box-shadow:0 10px 30px rgba(26,26,26,.08);padding:6px}
}
/* phone menu: a roomier sheet */
@media(max-width:900px){
  body.chrome2 nav.open .nav-links{gap:0;padding:12px 24px 28px;min-height:calc(100svh - 74px);background:#fff;overflow:auto}
  body.chrome2 nav.open .nav-links a{font-family:var(--c2-font);font-size:24px;font-weight:400;line-height:1.2;letter-spacing:-.01em;color:var(--c2-ink);padding:14px 0;min-height:0;display:block;border-bottom:1px solid #EEE9E4}
  body.chrome2 nav.open .nav-links a.active{font-weight:500}
  body.chrome2 nav.open .nav-links a.active::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--c2-ink);margin:0 10px 0 0;vertical-align:.2em}
}
/* ---------- footer ---------- */
footer.f2{background:var(--sand-2,#E8E3DF);padding:72px 0 40px;color:var(--c2-grey);font-family:var(--c2-font);font-size:15px}
.f2-top{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:48px;align-items:start;padding-bottom:48px;border-bottom:1px solid rgba(26,24,22,.12)}
.f2 .logo{color:var(--c2-ink);text-decoration:none}
.f2-tag{font-size:21px;line-height:1.4;color:var(--c2-ink);max-width:30ch;margin:16px 0 24px;letter-spacing:-.01em}
.f2-creds{display:flex;flex-wrap:wrap;gap:8px}
.f2-creds span{background:#fff;border-radius:999px;padding:8px 14px;font-size:13px;color:var(--c2-ink)}
.f2-contact{background:#fff;border-radius:20px;padding:28px 28px 30px}
.f2-k{font-family:var(--c2-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--c2-grey);margin:0}
.f2-mail{display:block;font-size:28px;line-height:1.2;letter-spacing:-.015em;color:var(--c2-ink);text-decoration:none;margin:12px 0 8px;overflow-wrap:anywhere}
.f2-mail:hover{text-decoration:underline;text-underline-offset:4px}
.f2-note{font-size:14px;color:var(--c2-grey);margin:0 0 20px}
.f2-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding:40px 0 36px}
.f2-cols h3{font-family:var(--c2-mono);font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--c2-ink);margin:0 0 14px}
.f2-cols a{display:block;color:var(--c2-text);text-decoration:none;padding:6px 0;font-size:15px}
.f2-cols a:hover{color:var(--c2-ink);text-decoration:underline;text-underline-offset:3px}
.f2-cols .loc{display:block;color:var(--c2-text);padding:6px 0;font-size:15px}
.f2-cols .loc b{display:block;font-weight:500;color:var(--c2-ink)}
.f2-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:22px;border-top:1px solid rgba(26,24,22,.12);font-size:14px}
.f2-bottom p{margin:0;color:var(--c2-grey)}
.f2-bottom a{color:var(--c2-ink);text-decoration:none}
.f2-bottom a:hover{text-decoration:underline;text-underline-offset:3px}
.f2-legal{display:flex;gap:22px}
.f2-disc{margin:18px 0 0;font-size:13px;line-height:1.6;color:#5E5953;max-width:920px}
.f2 a:focus-visible{outline:2px solid var(--c2-ink);outline-offset:3px;border-radius:4px}
@media(max-width:900px){
  footer.f2{padding:56px 0 32px}
  .f2-top{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .f2-cols{grid-template-columns:1fr 1fr;gap:8px 24px;padding:28px 0}
  .f2-cols > div:last-child{grid-column:1/-1}
  .f2-cols a,.f2-cols .loc{padding:11px 0;min-height:44px}
  .f2-tag{font-size:19px}
  .f2-mail{font-size:24px}
}

/* ===== v2b (2026-09-14): Namrata — "dominant dark footer?", "logo definitely bigger", "header needs to look premium" ===== */
/* ---------- header ---------- */
body.chrome2 nav .logo{font-size:40px;letter-spacing:-.025em}
@media(max-width:600px){body.chrome2 nav .logo{font-size:34px}}
body.chrome2 .nav-links{gap:34px}
body.chrome2 .nav-links a{letter-spacing:-.005em}
/* scrolled: dark smoked-glass pill */
body.chrome2 nav.scrolled .nav-inner{background:rgba(24,21,19,.8);backdrop-filter:blur(24px) saturate(1.5);-webkit-backdrop-filter:blur(24px) saturate(1.5);border:1px solid rgba(255,255,255,.08);box-shadow:0 18px 50px rgba(0,0,0,.28);height:66px}
body.chrome2 nav.scrolled .logo{color:#fff;text-shadow:none}
body.chrome2 nav.scrolled .nav-links a{color:rgba(255,255,255,.72);text-shadow:none}
body.chrome2 nav.scrolled .nav-links a:hover,body.chrome2 nav.scrolled .nav-links a.active{color:#fff}
body.chrome2 nav.scrolled .nav-links a.active::after{background:#fff}
body.chrome2 nav.scrolled .nav-join{color:rgba(255,255,255,.8)}
body.chrome2 nav.scrolled .nav-join:hover{color:#fff}
body.chrome2 nav.scrolled .btn{background:#fff;color:#18181B}
body.chrome2 nav.scrolled .nav-burger{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.16)}
body.chrome2 nav.scrolled .nav-burger i{background:#fff}
/* Platform section tabs: matching dark glass pill */
@media(min-width:901px){
  body.k.chrome2 .spy{top:86px}
  body.k.chrome2 .spy-inner{background:rgba(24,21,19,.8);border:1px solid rgba(255,255,255,.08);box-shadow:0 14px 40px rgba(0,0,0,.22)}
  body.k.chrome2 .spy-link{color:rgba(255,255,255,.55)}
  body.k.chrome2 .spy-link b{color:rgba(255,255,255,.9)}
  body.k.chrome2 .spy-link:hover{border-color:rgba(255,255,255,.16)}
  body.k.chrome2 .spy-link.on{background:#fff;border-color:#fff;color:rgba(24,24,27,.6)}
  body.k.chrome2 .spy-link.on b{color:#18181B}
}
/* phone: the open menu is a full dark sheet */
@media(max-width:900px){
  body.chrome2 nav.open{background:#1C1916}
  body.chrome2 nav.open .nav-inner{background:#1C1916;border-color:transparent;box-shadow:none}
  body.chrome2 nav.open .logo{color:#fff}
  body.chrome2 nav.open .nav-burger{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.16)}
  body.chrome2 nav.open .nav-burger i{background:#fff}
  body.chrome2 nav.open .btn{background:#fff;color:#18181B}
  body.chrome2 nav.open .nav-links{background:#1C1916;border-bottom:0;box-shadow:none}
  body.chrome2 nav.open .nav-links a{color:#fff;border-bottom-color:rgba(255,255,255,.1)}
  body.chrome2 nav.open .nav-links a.active::before{background:#fff}
}
/* ---------- footer: dominant dark ---------- */
footer.f2{background:#1C1916;color:rgba(255,255,255,.7);padding:80px 0 0;overflow:hidden}
.f2-top{border-bottom-color:rgba(255,255,255,.12)}
.f2-tag{color:#fff;font-size:26px;line-height:1.3;max-width:24ch;margin:0 0 28px;letter-spacing:-.015em}
.f2-creds span{background:rgba(255,255,255,.08);color:#fff}
.f2-contact{background:#F7F5F3}
.f2-cols h3{color:rgba(255,255,255,.55)}
.f2-cols a,.f2-cols .loc{color:rgba(255,255,255,.78)}
.f2-cols a:hover{color:#fff}
.f2-cols .loc b{color:#fff}
.f2-bottom{border-top-color:rgba(255,255,255,.12)}
.f2-bottom p{color:rgba(255,255,255,.6)}
.f2-bottom a{color:#fff}
.f2-disc{color:rgba(255,255,255,.55)}
.f2 a:focus-visible{outline-color:#fff}
.f2-mark{display:block;font-family:var(--sans,"IBM Plex Sans"),system-ui,sans-serif;font-weight:700;font-size:clamp(112px,26vw,400px);line-height:.8;letter-spacing:-.055em;color:#fff;text-decoration:none;margin:56px 0 0;padding-bottom:.04em;white-space:nowrap}
@media(max-width:900px){
  footer.f2{padding-top:60px}
  .f2-tag{font-size:22px}
  .f2-mark{margin-top:40px}
}
/* no white glow on the dark phone menu (the light-ground text-shadow rule was leaking in) */
body.chrome2 nav.open .logo,body.chrome2 nav.open .nav-links a,body.chrome2 nav.scrolled .logo{text-shadow:none}
/* v2c: Namrata — "too big now, have it where it was and biggish": the giant wordmark is gone; the logo is back at the top of the footer at 64px */
footer.f2{padding-bottom:40px}
.f2 .f2-brand .logo{display:inline-block;font-size:64px;line-height:1;letter-spacing:-.03em;color:#fff;margin:0 0 22px}
@media(max-width:900px){.f2 .f2-brand .logo{font-size:48px;margin-bottom:18px}}
/* v2d: Namrata — footer logo "same width as content below". Logo ink width = 1.6875 × font-size (IBM Plex Sans 700, -0.03em).
   Tagline widest line = 340px on desktop (24ch cap at 26px) and ≈288px on phones (24ch cap at 22px), so: */
.f2 .f2-brand .logo{font-size:200px;line-height:.9;margin:0 0 24px}
@media(max-width:900px){.f2 .f2-brand .logo{font-size:min(170px,calc((100vw - 48px) * .545));margin-bottom:18px}}
/* v2e: Namrata — "naah its too big now" (200px, tagline-width). Middle ground: 120px desktop, 90px phones */
.f2 .f2-brand .logo{font-size:120px;line-height:.9;margin:0 0 22px}
@media(max-width:900px){.f2 .f2-brand .logo{font-size:90px;margin-bottom:18px}}

/* rollout (2026-09-14): homepage — keep the footer's own typeface (sp.css sets body.sp footer to the body font) and give its closing card the same white gap as other pages */
body.sp footer.f2{font-family:var(--c2-font);letter-spacing:0;margin-top:67px}
body.sp footer.f2 .wrap{padding:0 24px}
/* homepage: sp.css resets paragraph margins, so restate the footer's rhythm */
body.sp .f2 .f2-brand .logo{margin:0 0 22px}
body.sp .f2 .f2-tag{margin:0 0 28px}
body.sp .f2 .f2-note{margin:0 0 20px}
body.sp .f2 .f2-disc{margin:18px 0 0}
body.sp .f2 .f2-bottom p{margin:0}
@media(max-width:900px){body.sp .f2 .f2-brand .logo{margin-bottom:18px}}

/* Join a study as a soft sand pill (2026-09-14): a separate door for participants, still quieter than the ink Get a quote */
@media(min-width:901px){
  body.chrome2 .nav-join{display:inline-flex;align-items:center;height:40px;padding:0 16px;border-radius:999px;background:#F1EDEA;color:var(--c2-ink);font-weight:500;transition:background .2s ease}
  body.chrome2 .nav-join:hover{background:#E6E0DA;color:var(--c2-ink)}
  body.chrome2 nav.scrolled .nav-join{background:rgba(255,255,255,.12);color:#fff}
  body.chrome2 nav.scrolled .nav-join:hover{background:rgba(255,255,255,.2);color:#fff}
  body.chrome2 .nav-join:focus-visible{outline:2px solid var(--c2-ink);outline-offset:2px}
  body.chrome2 nav.scrolled .nav-join:focus-visible{outline-color:#fff}
  body.chrome2 .nav-right{gap:10px}
}