/* Yoi Bio — landing page styles
   Layout: quiet premium. White paper, one navy band, product photography in soft frames,
   left-aligned type with a wide measure. Boldness lives in the hero strapline and the 良い mark. */

@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2-variations"),
       url("fonts/inter-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* colour — navy sampled from the logo artwork */
  --navy: #04214D;
  --navy-deep: #021536;
  --navy-tint: #E9EEF7;
  --blue: #2E6AE6;
  --ink: #1A1A1A;
  --paper: #FFFFFF;
  --mist: #F3F5F9;
  --line: #DEE3EC;
  --text: #17213A;
  --muted: #5B6980;
  --on-dark: #FFFFFF;
  --on-dark-muted: #B9C2D3;
  /* type */
  --font: "Inter Variable", Inter, "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --radius: 20px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

h1, h2, h3 { margin: 0; text-wrap: balance; }

p { margin: 0; }

.wrap {
  max-width: 1120px;
  margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

@media (min-width: 720px) {
  .wrap {
    padding-left: max(32px, env(safe-area-inset-left, 0px));
    padding-right: max(32px, env(safe-area-inset-right, 0px));
  }
}

/* ---------- type scale ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--navy);
}

.eyebrow--live::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 0 rgba(46, 106, 230, .45);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(46, 106, 230, .45); }
  70%  { box-shadow: 0 0 0 10px rgba(46, 106, 230, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 106, 230, 0); }
}

h1 {
  font-size: clamp(2.3rem, 1.3rem + 3.8vw, 3.9rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.028em;
  color: var(--navy);
}

h2 {
  font-size: clamp(1.75rem, 1.25rem + 1.8vw, 2.5rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.022em;
  color: var(--navy);
}

h3 {
  font-size: 1.2rem;
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--navy);
}

.lede {
  font-size: clamp(1.1rem, 1rem + .45vw, 1.3rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 32em;
}

.copy {
  color: var(--muted);
  max-width: 36em;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 52px;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 999px;
  background: var(--navy);
  color: var(--on-dark);
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .2s ease, transform .2s ease;
}

.btn:hover { background: var(--navy-deep); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

.btn--sm { min-height: 42px; padding: 0 1.1rem; font-size: .95rem; }

.btn--light { background: var(--paper); color: var(--navy); }
.btn--light:hover { background: var(--navy-tint); }
.btn--light:focus-visible { outline-color: var(--paper); }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  padding-block: 14px;
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px);
  z-index: 30;
  background: var(--paper);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo { display: inline-block; line-height: 0; }
.logo img { width: auto; height: 30px; }

@media (min-width: 720px) {
  .site-header { padding-block: 18px; }
  .logo img { height: 36px; }
}

/* ---------- hero ---------- */

.hero { padding-block: 40px 72px; }

.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.hero-copy { min-width: 0; display: grid; gap: 22px; justify-items: start; }

.hero-media { min-width: 0; }

@media (min-width: 900px) {
  .hero { padding-block: 48px 96px; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 64px; }
}

.frame {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--mist);
  box-shadow: 0 30px 70px -30px rgba(4, 33, 77, .4);
}

.frame img { width: 100%; }

/* ---------- waitlist form ---------- */

.waitlist {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  width: 100%;
  max-width: 540px;
  margin-top: 6px;
}

.waitlist input[type="email"] {
  flex: 1 1 220px;
  min-width: 0;
  height: 52px;
  padding: 0 20px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.waitlist input[type="email"]::placeholder { color: #8A94A8; }

.waitlist input[type="email"]:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 4px rgba(46, 106, 230, .18);
}

.waitlist .btn { flex: 0 0 auto; }

.form-note {
  font-size: .86rem;
  line-height: 1.5;
  color: var(--muted);
  max-width: 34em;
}

.form-state {
  display: none;
  margin-top: 4px;
  font-weight: 600;
  font-size: 1rem;
}

.form-state.is-success { display: block; color: var(--navy); }
.form-state.is-error { display: block; color: #B3261E; }

.hp {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.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;
}

/* ---------- bands ---------- */

.band-mist { background: var(--mist); }
.band-navy { background: var(--navy); color: var(--on-dark); }
.band-navy h2 { color: var(--on-dark); }
.band-navy .eyebrow { color: var(--on-dark-muted); }

/* ---------- system cards ---------- */

.system { padding-block: 64px; display: grid; gap: 36px; }

@media (min-width: 900px) { .system { padding-block: 88px; gap: 44px; } }

.section-head { display: grid; gap: 14px; max-width: 40em; }

.cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  min-width: 0;
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
}

.card p { color: var(--muted); font-size: 1rem; }

.glyph {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--navy-tint);
  color: var(--navy);
  margin-bottom: 4px;
}

.glyph svg { width: 24px; height: 24px; }

/* ---------- product gallery ---------- */

.gallery {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .gallery { grid-template-columns: 1fr 1fr; gap: 28px; }
}

.gallery-item { margin: 0; min-width: 0; display: grid; gap: 12px; }

.gallery-item img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.gallery-item figcaption {
  font-size: .88rem;
  line-height: 1.5;
  color: var(--muted);
  padding-inline: 4px;
}

/* ---------- version 1 panel ---------- */

.panel {
  padding-block: 64px;
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) { .panel { padding-block: 88px 80px; gap: 40px; } }

.markers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.marker {
  min-width: 0;
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 22px 22px 24px;
  border-radius: 16px;
  background: var(--mist);
}

.marker h3 { font-size: 1.1rem; }
.marker p { font-size: .95rem; color: var(--muted); }

.marker-group {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 4px;
}

.panel-note {
  font-size: .95rem;
  color: var(--muted);
  max-width: 40em;
}

/* ---------- feature rows ---------- */

.feature {
  display: grid;
  gap: 36px;
  align-items: center;
  padding-block: 64px;
}

.feature + .feature { padding-top: 0; }

.feature-copy { min-width: 0; display: grid; gap: 18px; }
.feature-media { min-width: 0; }

@media (min-width: 900px) {
  .feature { grid-template-columns: 1fr 1fr; gap: 72px; padding-block: 88px; }
  .feature + .feature { padding-top: 0; }
  .feature--flip .feature-media { order: 2; }
}

.checks {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  color: var(--text);
}

.checks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.checks svg { flex: 0 0 22px; width: 22px; height: 22px; margin-top: 2px; color: var(--blue); }

/* ---------- story strip ---------- */

.story {
  display: grid;
  gap: 14px;
  justify-items: start;
  max-width: 40em;
  padding-block: 56px 72px;
}

@media (min-width: 900px) { .story { padding-block: 72px 96px; } }

.story h2 { font-size: clamp(2rem, 1.3rem + 2.4vw, 3rem); }
.story .copy { font-size: 1.15rem; max-width: 30em; }

/* ---------- call to action ---------- */

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px 48px;
  padding-block: 64px;
}

.cta-copy { display: grid; gap: 10px; min-width: 0; max-width: 34em; }
.cta-copy p { color: var(--on-dark-muted); font-size: 1.1rem; }

/* ---------- footer ---------- */

.site-footer {
  background: var(--ink);
  color: var(--on-dark-muted);
  font-size: .9rem;
  line-height: 1.6;
  padding-block: 48px 44px;
}

.foot {
  display: grid;
  gap: 28px;
}

@media (min-width: 720px) {
  .foot { grid-template-columns: auto 1fr; gap: 64px; align-items: start; }
}

.foot .logo img { height: 28px; }

.foot-text { display: grid; gap: 8px; max-width: 48em; min-width: 0; }
.foot-text strong { color: var(--on-dark); font-weight: 600; }

.foot-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 10px; }
.foot-links a { color: var(--on-dark); text-decoration: none; border-bottom: 1px solid rgba(255, 255, 255, .35); padding-bottom: 1px; }
.foot-links a:hover { border-bottom-color: var(--on-dark); }
.foot-links a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.foot-links .social { display: inline-flex; align-items: center; gap: 8px; }
.foot-links .social svg { width: 18px; height: 18px; }

.form-note a { color: var(--navy); font-weight: 500; }

/* ---------- long-form pages (privacy) ---------- */

.prose {
  padding-block: 32px 96px;
  display: grid;
  gap: 18px;
  max-width: 44em;
}

.prose h1 { font-size: clamp(2rem, 1.3rem + 2.4vw, 3rem); }
.prose h2 { font-size: 1.35rem; margin-top: 18px; }
.prose p, .prose li { color: var(--text); }
.prose ul { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; }
.prose .meta { color: var(--muted); font-size: .95rem; }
.prose a { color: var(--navy); }

/* ---------- utility pages (thanks) ---------- */

.simple {
  min-height: 50vh;
  display: grid;
  gap: 18px;
  justify-items: start;
  align-content: center;
  padding-block: 48px 96px;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .eyebrow--live::before { animation: none; }
  .btn { transition: none; }
}