/* ============================================================
   Metric Biotechnologies — design tokens & base

   Brand:
     Fonts:   Inter Tight Medium (500)  — wordmark + primary headlines
              Inter Tight ExtraLight (200) — body, subheads, light display
     Colors:  #EB5D29 (orange — brand)
              #5E5E5F (grey — text)
   ============================================================ */

:root {
  /* Color */
  --c-orange: #EB5D29;
  --c-ink:    #5E5E5F;
  --c-bg:     #FFFFFF;
  --c-cream:  #EFEAE5;
  --c-line:   #E5E5E5;
  --c-btn-bg: #5E5E5F;

  /* Type */
  --ff-base: "Inter Tight", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --fw-medium: 500;
  --fw-light:  200;

  /* Type scale — desktop (1440+) */
  --fs-brand:    28px;
  --fs-nav:      22px;
  --fs-h1:       56px;
  --fs-h1-contact: 126px;
  --fs-h2-large: 64px;
  --fs-h2:       42px;
  --fs-h3:       32.5px;
  --fs-body:     22.5px;
  --fs-footer:   19px;
  --fs-mark:     164px;
  --fs-button:   18px;
  --fs-label:    16px;
  --fs-cta:      28px;

  /* Layout */
  --gutter:        50px;
  --max:           100%;
  --hdr-pad-y:     21px;
  --space-to-mark: clamp(60px, 10vw, 160px);  /* gap between content and the big "Metric." */
  --vstack-gap:    clamp(20px, 2.5vw, 40px);  /* vertical gap between stacked text blocks on home */
}

/* About page: compress to fit content + flourish + footer in one viewport. */
/* About + Contact pages fill the viewport; brand mark sticks to the bottom of main so the
   gap between Metric and the footer matches the home page (30px = 15+15). */
body.page-about,
body.page-contact {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
body.page-about main,
body.page-contact main {
  flex: 1;
  display: flex;
  flex-direction: column;
}
body.page-about .brand-mark {
  margin-top: auto;
  padding-top: 0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* Scroll-snap: only on home page (page 1 = header at top, page 2 = footer at bottom).
   About/contact pages scroll normally. */
html:has(body.page-home) {
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
}
/* Snap 1: top of doc (header + hero). Snap 2: .page-2 wrapper sized to
   exactly 100vh, so the snap reaches the true bottom of the page and
   the hero never bleeds into it. */
body.page-home .site-header { scroll-snap-align: start; scroll-snap-stop: always; }
body.page-home .site-footer { scroll-snap-align: end; }

body {
  font-family: var(--ff-base);
  font-weight: var(--fw-light);    /* ExtraLight is the default body weight */
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.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;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  padding: var(--hdr-pad-y) 0;
  background: var(--c-bg);
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  color: var(--c-orange);
  font-size: var(--fs-brand);
  font-weight: var(--fw-medium);
  line-height: 1;
}
.site-header .right { display: flex; align-items: center; gap: 22px; }
.nav-contact {
  color: var(--c-ink);
  font-size: var(--fs-nav);
  font-weight: var(--fw-light);
}
.menu-toggle {
  background: none; border: 0; padding: 6px; cursor: pointer;
  display: inline-flex; flex-direction: column; gap: 5px;
}
.menu-toggle span {
  width: 22px; height: 1.5px; background: var(--c-ink); display: block;
}

/* ============================================================
   Home — Hero
   ============================================================ */
.home-hero {
  position: relative;
  min-height: calc(100vh - 80px); /* viewport minus header */
}
.home-hero-text { position: relative; z-index: 1; }
.home-hero .container {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  align-items: stretch;
  gap: 40px;
}
.home-hero-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  text-align: left;
  gap: 36px;
}
.home-hero h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-medium);
  line-height: 1.1;
  color: var(--c-ink);
  margin: 0;
  max-width: 760px;
}
.home-hero-image {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.home-hero-image img {
  width: 100%;
  height: 100%;
  max-height: calc(100vh - 80px);
  object-fit: contain;
  object-position: center center;
  display: block;
}

/* Inline ">" CTA — same font as label, no circle */
.cta-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  font-size: var(--fs-cta);
  color: var(--c-ink);
  font-weight: var(--fw-light);
  line-height: 1.2;
  transition: color .2s;
}
.cta-link .arrow {
  display: inline-block;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  line-height: inherit;
  transition: transform .2s;
}
.cta-link:hover { color: var(--c-orange); }
.cta-link:hover .arrow { transform: translateX(2px); }

/* ============================================================
   Home — "Make better biologics with us" band
   ============================================================ */
.home-band {
  padding-top: clamp(30px, 10vw, 160px);
  padding-bottom: 0;
}
.home-band .row1 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  margin-top: var(--vstack-gap);
}
.home-band h2 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0;
  line-height: 1.2;
}
.home-band .row2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.home-band h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0 0 var(--vstack-gap);
  line-height: 1.2;
  max-width: 620px;
}
.home-band p {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  margin: 0;
  max-width: 620px;
  line-height: 1.55;
}
.home-band .antibody-img { align-self: end; }
.home-band .antibody-img img {
  width: 100%;
  max-width: 720px;
  height: auto;
}

/* ============================================================
   About — hero (two columns)
   ============================================================ */
.about-hero {
  padding: 30px 0 60px;
}
.about-hero .grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  align-items: start;
}
.about-hero h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0;
  line-height: 1.15;
  overflow-wrap: normal;
}
.about-hero p {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  margin: 0;
  line-height: 1.55;
}

/* ============================================================
   About — team grid
   ============================================================ */
.team { padding: 0; }
.team-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  align-items: start;
}
.member {
  display: grid;
  grid-template-columns: 40% 1fr;
  gap: 12px;
  align-items: start;
}
.member-img {
  width: 82%;
  max-width: none;
  aspect-ratio: 327 / 514;
  object-fit: cover;
  margin: 0;
}
.member-info { min-width: 0; }
.member h3 {
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0 0 16px;
  line-height: 1.2;
}
.member h3 .role {
  display: block;
  font-weight: var(--fw-medium);
}
.member p {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  margin: 0 0 16px;
  line-height: 1.55;
}
.member .affil {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  line-height: 1.55;
  display: block;
}

/* ============================================================
   Contact
   ============================================================ */
.contact-hero { padding: 80px 0 30px; }
.contact-title {
  font-size: var(--fs-h1-contact);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0;
  line-height: 1;
}
.contact-title .accent { color: var(--c-orange); }

.contact-divider {
  border: 0;
  border-top: 1px solid var(--c-line);
  margin: 30px 0 0;
}

.contact-body { padding: 70px 0 100px; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  align-items: start;
}
.contact-grid form { max-width: 845px; width: 100%; }
.req { color: var(--c-orange); }
.contact-info h2 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin: 0 0 16px;
  line-height: 1.2;
}
.contact-info p {
  font-size: var(--fs-body);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  margin: 0 0 6px;
  line-height: 1.55;
}
.contact-info a:hover { color: var(--c-orange); }

/* Form */
form { display: block; }
form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
form .field { margin-bottom: 16px; }
form .row .field { margin-bottom: 0; }
form label {
  display: block;
  font-size: var(--fs-label);
  font-weight: var(--fw-medium);
  color: var(--c-ink);
  margin-bottom: 8px;
}
#form-status {
  margin-top: 12px;
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--c-ink);
}
form input,
form textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--c-line);
  padding: 8px 12px;
  font: inherit;
  font-size: 16px;
  font-weight: var(--fw-light);
  color: var(--c-ink);
  border-radius: 0;
  line-height: 1.4;
}
form input:focus,
form textarea:focus {
  outline: none;
  border-color: var(--c-ink);
}
form .error {
  display: none;
  margin-top: 6px;
  color: #d23535;
  font-size: 13px;
  line-height: 1.3;
}
form .error::before {
  content: "\26A0  ";
}
form input:user-invalid {
  border-color: #d23535;
}
form .field:has(input:user-invalid) .error {
  display: block;
}
form textarea {
  min-height: 74px;
  resize: vertical;
}
form button {
  width: 100%;
  padding: 11px 15px;
  background: var(--c-btn-bg);
  color: var(--c-cream);
  border: 0;
  font: inherit;
  font-size: 16px;
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: background .2s;
  text-align: center;
}
form button:hover { background: var(--c-orange); }

/* honeypot */
.hp-field {
  position: absolute !important;
  left: -10000px; top: auto;
  width: 1px; height: 1px;
  overflow: hidden;
}

/* ============================================================
   Big brand mark
   ============================================================ */
.brand-mark { padding: var(--space-to-mark) 0 15px; }
.brand-mark .word {
  font-size: var(--fs-mark);
  font-weight: var(--fw-medium);
  color: var(--c-orange);
  line-height: 1;
  margin: 0;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { padding: 15px 0 30px; }   /* extra bottom padding absorbs ~9px scroll-snap-end quirk */
.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-links { display: flex; gap: 45px; }
.footer-links a {
  font-size: var(--fs-footer);
  font-weight: var(--fw-light);
  color: var(--c-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.footer-links a:hover { color: var(--c-orange); }
.copy {
  font-size: var(--fs-footer);
  font-weight: var(--fw-light);
  color: var(--c-ink);
}

/* ============================================================
   Tablet (≤ 1100)
   ============================================================ */
@media (max-width: 1100px) {
  :root {
    --fs-brand:    22px;
    --fs-nav:      18px;
    --fs-h1:       42px;
    --fs-h1-contact: 96px;
    --fs-h2-large: 48px;
    --fs-h2:       31px;
    --fs-h3:       24px;
    --fs-body:     18.5px;
    --fs-footer:   15px;
    --fs-mark:     112px;
    --fs-cta:      23px;
    --gutter:      36px;
  }
  .home-hero-image { min-height: 600px; }
  .about-hero { padding: 100px 0 60px; }
  .about-hero .grid { gap: 80px; }
  .team-grid { gap: 60px; }
  .contact-grid { gap: 100px; }
  .home-band .row1 { margin-top: 60px; }
  .footer-links { gap: 30px; }
}

/* ============================================================
   Mobile (≤ 700)
   ============================================================ */
@media (max-width: 700px) {
  :root {
    /* Mobile: all sizes scaled by ~0.91 (≥ 1pt reduction across the board) */
    --fs-brand:    18px;
    --fs-nav:      16px;
    --fs-h1:       33px;
    --fs-h1-contact: 51px;
    --fs-h2-large: 40px;
    --fs-h2:       28px;
    --fs-h3:       18.5px;
    --fs-body:     16px;
    --fs-footer:   13.5px;
    --fs-mark:     54px;
    --fs-label:    15px;
    --fs-cta:      20px;
    --gutter:      15px;
  }
  .team-grid { max-width: 100%; }
  .site-header .right { gap: 18px; }

  /* mobile inherits desktop min-height: calc(100vh - 80px) so hero fills viewport
     and never lets the next section bleed in */
  .home-hero .container { grid-template-columns: 1fr; }
  .home-hero-text {
    padding-top: clamp(20px, 8vw, 60px);
    padding-bottom: clamp(20px, 6vw, 50px);
    padding-left: 0;
    padding-right: 0;
    align-items: flex-start;
    text-align: left;
  }
  .home-hero h1 {
    font-size: var(--fs-h1);
    max-width: 360px;
    line-height: 1.05;
  }
  /* Lock hero to exactly one viewport (minus the header) and flex the image into
     whatever vertical space remains after the H1/CTA. */
  .home-hero { height: calc(100vh - 62px); min-height: 0; }
  .home-hero .container { display: flex; flex-direction: column; height: 100%; }
  .home-hero-text { flex: 0 0 auto; }
  .home-hero-image {
    flex: 1 1 auto;
    min-height: 0;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .home-hero-image img {
    width: auto;
    height: 100%;
    max-width: 80vw;
    object-fit: contain;
  }
  /* .home-band padding-top now handled by clamp() at top of rule */
  .home-band .row1 {
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
    margin-top: 40px;
  }
  .home-band h2 {
    font-size: var(--fs-h2-large);
    line-height: 1.05;
    flex: 0 1 auto;
    max-width: 200px;
  }
  .home-band .row1 .cta-link {
    margin-top: 6px;
    flex: 0 0 auto;
  }
  .home-band .row2 {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .home-band .antibody-img img { width: 100%; max-width: 100%; }

  .about-hero { padding: 60px 0 40px; }
  .about-hero .grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  .team { padding: 30px 0 60px; }
  .team-grid {
    grid-template-columns: 1fr;
    gap: 80px;
  }
  .member-img { max-width: 200px; }

  .contact-hero { padding: 40px 0 20px; }
  .contact-body { padding: 30px 0 60px; }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  form .row { grid-template-columns: 1fr 1fr; gap: 12px; }

  .brand-mark { padding: 60px 0 20px; }
  .copy-long { display: none; }   /* show only "© 2026" on small screens */
  .footer-links { gap: 20px; }
}