/* NutriSignals v0.98 - static landing page */
:root{
  --bg:#ffffff;
  --ink:#0b1220;
  --muted:#51607a;
  --line:#e6ebf2;
  --card:#ffffff;
  --accent:#0b5fff;
  --shadow: 0 10px 30px rgba(11,18,32,.08);
  --radius: 16px;
  --max: 1120px;
  --font: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{min-height:100vh;min-height:100dvh;margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);display:flex;flex-direction:column}
main{flex:1 0 auto;width:100%}
a{color:var(--accent);text-decoration:none}

/* Accessibility: make inline links distinguishable beyond colour */
.fineprint a, .note a, .prose a, .site-footer a {
  text-decoration: underline;
  text-underline-offset: 0.14em;
}
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
a:hover{text-decoration:underline}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;padding-top:env(safe-area-inset-top);background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);z-index:10}
.header-row{display:flex;align-items:center;justify-content:space-between;min-height:84px;gap:18px}
.brand{display:flex;align-items:center;gap:12px}
.brand-link{display:flex;align-items:center;gap:12px;color:inherit}
.logo{width:40px;height:40px;border-radius:12px;background:transparent;display:grid;place-items:center;overflow:visible;box-shadow:none}
.logo img{width:100%;height:100%;object-fit:contain}
.brand-name{font-weight:900;font-size:18px;line-height:1.05}
.brand-tag{font-size:13px;color:var(--muted)}

/* Header sizing (make the top bar feel balanced vs the hero headline) */
.site-header .logo{width:54px;height:54px;border-radius:14px}
.site-header .brand-name{font-size:22px;line-height:1.08}
.site-header .brand-tag{font-size:14px}
.site-header .nav a{font-size:14px}
.site-header .btn-small{font-size:14px;padding:10px 13px;border-radius:12px}
.header-cta{white-space:nowrap}
.nav-toggle{display:none;align-items:center;justify-content:center;flex:0 0 auto;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);box-shadow:0 6px 18px rgba(11,18,32,.05);cursor:pointer}
.nav-toggle:hover{background:#f7faff}
.nav-toggle svg{width:22px;height:22px}

.nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.nav a{color:var(--ink);font-weight:700;font-size:14px}
.nav a.btn{color:#fff}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:12px;background:var(--accent);color:#fff !important;box-shadow:var(--shadow);border:1px solid rgba(0,0,0,0);font-weight:900}
.btn:hover{filter:brightness(1.03);text-decoration:none}
.btn-small{padding:10px 12px;border-radius:11px;font-size:13px}
.btn-ghost{background:transparent;color:var(--accent) !important;border:1px solid var(--line);box-shadow:none}
.hero{padding:56px 0 24px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center}
h1{font-size:44px;line-height:1.05;margin:0 0 14px}
.lead{font-size:18px;color:var(--muted);margin:0 0 18px;max-width:60ch}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0 10px}
.hero-inline-link{display:inline-flex;align-items:center;font-weight:800;color:var(--accent);padding:12px 2px;text-underline-offset:.16em}
.hero-inline-link:hover{text-decoration:underline;filter:none}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:8px 10px;font-size:13px;color:var(--muted)}
.badge-dot{width:8px;height:8px;border-radius:99px;background:var(--accent)}
.hero-shot{border:1px solid var(--line);border-radius:6px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.hero-shot img{display:block;width:100%;height:auto}

.hero-shot picture,.hero-shot img,.feature picture,.feature picture img,.feature-shot,.feature-shot picture{display:block}
#screens picture img,#weight-tracker-feature picture img,.hero-shot img,.feature-shot img{border-radius:6px !important}
.hero-shot-link,.hero-shot-hint{display:none}
@media (min-width:941px){
  .hero-shot-link{display:inline-flex;margin-top:12px}
  .hero-shot-hint{display:block;margin:10px 0 0;font-size:13px;color:var(--muted)}
}
.section{padding:44px 0}
.section-muted{background:#f7faff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap}
h2{font-size:28px;margin:0 0 8px}
.kicker{color:var(--muted);margin:0 0 18px;max-width:80ch}
.feature{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:28px;align-items:center;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:0 6px 18px rgba(11,18,32,.05)}
.feature .copy{max-width:30rem;padding-right:6px}.feature .copy h3{margin:0 0 8px;font-size:18px}
.feature .copy p{margin:0;color:var(--muted)}
.feature .copy .copy-intro{margin:0 0 12px;color:var(--muted)}
.feature .copy .feature-points{margin:0;padding-left:18px;color:var(--muted);display:grid;gap:8px}
.feature .copy .feature-points li{margin:0}
.feature .copy .copy-note{margin:12px 0 0;color:var(--muted)}
#screens .feature .copy{max-width:34rem}
#more-features .cta-copy .copy-note{margin:10px 0 0;color:var(--muted)}
.cta-points{margin:12px 0 0;padding-left:18px;color:var(--muted);display:grid;gap:8px}
.cta-points li{margin:0}
.feature img{width:100%;height:auto;border-radius:6px;border:1px solid var(--line)}.feature-shot{position:relative;width:100%}#screens .container{max-width:1240px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.screens-stack{display:grid;grid-template-columns:1fr;gap:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:16px;box-shadow:0 6px 18px rgba(11,18,32,.05)}
.card h3{margin:0 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted)}
.cta-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.waitlist{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
input[type="email"]{width:min(320px,70vw);padding:12px 12px;border-radius:12px;border:1px solid var(--line);font-size:14px}
.fineprint{font-size:12px;color:var(--muted);margin-top:8px}
.note{font-size:12px;color:var(--muted);margin-top:12px}
.site-footer{margin-top:auto;border-top:1px solid var(--line);background:#fff;padding:22px 0}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-links{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.footer-links .social-link{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;line-height:0}
.footer-links .social-link:hover{background:rgba(24,119,242,.08)}
.footer-links .social-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.footer-links .social-link svg{width:22px;height:22px;display:block}
.footer-links .social-link img{width:22px;height:22px;display:block;border-radius:6px}
.muted{color:var(--muted)}
.small{font-size:12px}
.prose{max-width:860px}
.prose h1{font-size:34px}
.prose h2{margin-top:24px}
.prose ul{color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hidden{display:none !important}

@media (max-width:940px){
  .header-row{position:relative;min-height:68px;padding:10px 0;gap:10px;align-items:center}
  .site-header .logo{width:40px;height:40px;border-radius:12px}
  .site-header .brand-name{font-size:18px}
  .site-header .brand-tag{display:none}
  .site-header .btn-small{font-size:13px;padding:10px 12px}
  .header-cta{margin-left:auto}
  .nav-toggle{display:inline-flex}
  .nav{position:absolute;top:calc(100% + 8px);left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:8px;padding:10px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);z-index:20}
  .nav[data-open="true"]{display:flex}
  .nav a{display:flex;align-items:center;justify-content:flex-start;padding:12px 12px;border-radius:12px;font-size:15px}
  .nav a.btn{justify-content:center}
  .nav a:hover{text-decoration:none;background:#f7faff}
  .hero-grid{grid-template-columns:1fr}
  h1{font-size:36px}
  .feature{grid-template-columns:1fr}
  .feature .copy{max-width:none;padding-right:0}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .screens-stack{grid-template-columns:1fr}
  .cta-card{grid-template-columns:1fr}
  .waitlist{justify-content:flex-start}
}

@media (max-width:640px){
  .container{padding:0 16px}
  .header-row{min-height:64px}
  .brand-link{gap:10px}
  .site-header .brand-name{font-size:17px}
  .header-cta{padding:9px 11px;font-size:12px}
  .nav-toggle{width:42px;height:42px;border-radius:11px}
}

/* Accessibility */
:focus-visible{outline:3px solid rgba(11,95,255,.35);outline-offset:2px;border-radius:10px}
html{scroll-behavior:smooth}
/* --- Screenshot lightbox --- */
@media (min-width: 941px) {
  img[data-lightbox],
  img[data-lightbox-full] {
    cursor: zoom-in;
  }
}

.ns-zoomable {
  cursor: zoom-in;
  transition: transform 140ms ease, filter 140ms ease;
}
.ns-zoomable:hover {
  transform: scale(1.01);
  filter: brightness(1.02);
}
.ns-zoomable:focus {
  outline: 3px solid rgba(60, 140, 255, 0.55);
  outline-offset: 3px;
}

.ns-lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.78);
  z-index: 9999;
}
.ns-lightbox.open {
  display: flex;
}

.ns-lightbox-img {
  max-width: 88vw;
  max-height: 88vh;
  width: auto;
  height: auto;
  border-radius: 0;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.55);
}

.ns-lightbox-close {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(6px);
}
.ns-lightbox-close:hover {
  background: rgba(0, 0, 0, 0.6);
}

.ns-lightbox-open {
  overflow: hidden;
}

/* --- Developer note --- */
.developer-note-card{
  align-items:start;
  padding:28px 30px;
}

.developer-note-copy{
  max-width:100%;
}

.developer-note-card h2{
  margin:0 0 18px;
}

.developer-quote{
  position:relative;
  margin:0;
  padding:26px 84px 30px 84px;
  border:0;
  overflow:visible;
}

.developer-quote-mark{
  position:absolute;
  display:block;
  pointer-events:none;
  user-select:none;
  color:#111827;
  opacity:1;
  line-height:.78;
  font-family:Georgia, "Times New Roman", serif;
  font-weight:700;
  z-index:0;
}

.developer-quote-mark-open{
  left:42px;
  top:18px;
  font-size:72px;
}

.developer-quote-mark-close{
  right:54px;
  bottom:10px;
  font-size:72px;
}

.developer-quote p{
  position:relative;
  z-index:1;
  margin:0 0 22px;
  font-size:18px;
  line-height:1.5;
}

.developer-quote p:last-child{
  margin-bottom:0;
}

.developer-signoff{
  margin:22px 0 0 84px;
  font-size:18px;
  line-height:1.45;
}

.developer-signoff strong{
  display:inline-block;
  margin-top:2px;
}

@media (max-width:940px){
  .developer-note-card{
    padding:24px 22px;
  }

  .developer-quote{
    padding:24px 48px 28px 48px;
  }

  .developer-quote-mark-open{
    left:14px;
    top:2px;
    font-size:59px;
  }

  .developer-quote-mark-close{
    right:18px;
    bottom:-2px;
    font-size:59px;
  }

  .developer-quote p,
  .developer-signoff{
    font-size:17px;
  }

  .developer-signoff{
    margin:18px 0 0 48px;
  }
}



/* --- Nutrient guides --- */
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.guide-breadcrumb{margin-bottom:14px}
.guide-breadcrumb a{color:var(--muted)}
.guide-breadcrumb a:hover{color:var(--accent)}
.nutrient-hero{padding:56px 0 28px}
.guide-hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:24px;align-items:start}
.guide-callout{border:1px solid var(--line);border-radius:var(--radius);background:#f7faff;padding:20px;box-shadow:0 6px 18px rgba(11,18,32,.05)}
.guide-callout h2{font-size:22px;margin:0 0 10px}
.guide-callout p{margin:0;color:var(--muted);line-height:1.7}
.guide-intake-note{margin:0 0 14px;color:var(--ink);font-size:15px;line-height:1.65;max-width:60ch}
.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,320px);gap:22px;align-items:start}
.guide-main{display:grid;gap:16px}
.guide-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px;box-shadow:0 6px 18px rgba(11,18,32,.05)}
.guide-card h2{font-size:24px;margin:0 0 10px}
.guide-card h3{margin:0 0 10px;font-size:20px}
.guide-card h4{margin:0 0 8px;font-size:15px}
.guide-card p{margin:0 0 14px;color:var(--muted);line-height:1.7}
.guide-card p:last-child{margin-bottom:0}
.guide-card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.7}
.guide-card li+li{margin-top:6px}
.guide-sidebar{position:relative}
.guide-sticky{position:sticky;top:110px}
.guide-side-group + .guide-side-group{margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.guide-link-list{margin:0;padding-left:18px}
.guide-link-list li+li{margin-top:8px}
.guide-list-grid{gap:16px}
.guide-list-card h2{font-size:22px}
.guide-list-card p{min-height:72px}
.guide-text-link{font-weight:800}
.guide-cta{padding:22px}
.guide-cta-actions{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
@media (max-width:960px){
  .guide-hero-grid,
  .guide-layout{grid-template-columns:1fr}
  .guide-sticky{position:static}
  .guide-cta-actions{align-items:flex-start}
}
@media (max-width:640px){
  .guide-card{padding:18px}
  .guide-card h2{font-size:22px}
}

.guide-food-visual{margin:18px 0 16px;padding:18px;border-radius:22px;border:1px solid #dbe7ff;background:linear-gradient(180deg,#f8fbff 0%,#eef4ff 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.9)}
.guide-food-visual picture,.guide-food-visual img{display:block}
.guide-food-visual img{width:min(100%,560px);height:auto;margin:0 auto}
.guide-food-note{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.6;text-align:center}
.guide-food-tile{display:block;margin:-2px -2px 16px;padding:14px;border-radius:20px;border:1px solid #dbe7ff;background:linear-gradient(180deg,#f8fbff 0%,#eef4ff 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.9);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.guide-food-tile:hover{transform:translateY(-1px);border-color:#bfd4ff;box-shadow:0 10px 24px rgba(11,95,255,.08),inset 0 1px 0 rgba(255,255,255,.9)}
.guide-food-tile picture,.guide-food-tile img{display:block}
.guide-food-tile img{width:100%;height:auto;max-width:320px;margin:0 auto}
.guide-list-card p{min-height:0}
@media (max-width: 640px){
  .guide-food-visual{padding:14px}
  .guide-food-tile{padding:12px}
}