/* ================================================================
   Colormatch S.A. — landing styles
   Register: brand. Palette: Extruder Blue #033EB9 + Signal Vermillion #F92F05.
   Type: Poppins (Bold display + Regular body + Medium labels).
   ================================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Color primitives (hex sRGB, per DESIGN.md frontmatter) */
  --color-primary-blue: #033EB9;
  --color-primary-blue-deep: #0532A0;
  --color-primary-blue-outline: #2563EB;
  --color-accent-vermillion: #F92F05;
  --color-accent-vermillion-deep: #D82600;
  --color-ink: #0F172A;
  --color-ink-muted: #4B5563;         /* darker than DESIGN spec #57565C for AA on sky */
  --color-ink-inverse: #FFFFFF;
  --color-surface: #FFFFFF;
  --color-surface-sky: #E3EFFC;
  --color-surface-aqua: #BAE6FD;
  --color-border-sky: #CFDFF6;
  --color-border-hairline: #E5E7EB;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-xxl: 96px;
  --space-section: clamp(80px, 12vw, 144px);

  /* Type */
  --font-sans: "Poppins", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --leading-tight: 1.05;
  --leading-snug: 1.15;
  --leading-body: 1.55;

  /* Motion */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --dur-fast: 120ms;
  --dur-standard: 180ms;
  --dur-slow: 320ms;

  /* Shadow vocabulary */
  --shadow-tile-rest:  0 1px 2px rgba(15, 23, 42, 0.06),
                       0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-tile-hover: 0 4px 12px rgba(15, 23, 42, 0.08),
                       0 12px 32px rgba(3, 62, 185, 0.14);
  --shadow-nav-scrolled: 0 1px 0 rgba(15, 23, 42, 0.06),
                         0 8px 24px rgba(15, 23, 42, 0.06);

  /* Layout */
  --container: 1200px;
  --gutter: clamp(20px, 4vw, 40px);

  /* Semantic z-index scale */
  --z-nav: 40;
  --z-mobile-nav: 60;
  --z-mobile-nav-toggle: 70;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
html, body { margin: 0; }
body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;              /* 17px */
  font-weight: 400;
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, p, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
address { font-style: normal; }

/* Focus visibility — never remove */
:focus-visible {
  outline: 2px solid var(--color-primary-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px; left: 16px;
  background: var(--color-ink);
  color: var(--color-ink-inverse);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-weight: 500;
  z-index: 100;
  transition: top var(--dur-fast) var(--ease-standard);
}
.skip-link:focus { top: 16px; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Type ---------- */
.display {
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2.25rem, 5.4vw, 4.25rem);
  line-height: var(--leading-tight);
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.headline {
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  line-height: var(--leading-snug);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.section-lede {
  color: var(--color-ink-muted);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: var(--leading-body);
  max-width: 62ch;
  text-wrap: pretty;
}
.eyebrow {
  display: inline-block;
  color: var(--color-accent-vermillion);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0;
  margin-bottom: 12px;
}
.eyebrow--on-blue { color: rgba(255, 255, 255, 0.92); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  border: 0;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1;
  letter-spacing: 0;
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--dur-standard) var(--ease-standard),
    color var(--dur-standard) var(--ease-standard),
    transform var(--dur-standard) var(--ease-standard),
    box-shadow var(--dur-standard) var(--ease-standard);
}
.btn__icon {
  transition: transform var(--dur-standard) var(--ease-standard);
}
.btn:hover .btn__icon { transform: translateX(3px); }

.btn-primary {
  background: var(--color-primary-blue);
  color: var(--color-ink-inverse);
  box-shadow: 0 1px 0 rgba(3, 62, 185, 0.25);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-blue-deep);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(3, 62, 185, 0.28);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary-blue);
  outline-offset: 3px;
}
.btn-primary:active { transform: translateY(0); }
.btn-primary--sm { padding: 14px 24px; font-size: 0.9375rem; }

@media (prefers-reduced-motion: reduce) {
  .btn, .btn__icon { transition: background var(--dur-standard); transform: none !important; }
}

/* ---------- Site nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255, 255, 255, 0);
  transition:
    background var(--dur-standard) var(--ease-standard),
    box-shadow var(--dur-standard) var(--ease-standard),
    backdrop-filter var(--dur-standard) var(--ease-standard);
}
.site-nav[data-scrolled="true"] {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  box-shadow: var(--shadow-nav-scrolled);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 20px;
}
.site-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ink);
}
.brand-mark { width: 48px; height: auto; flex: 0 0 48px; }
.brand-word {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1;
}
.brand-word__name {
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.015em;
  color: var(--color-ink);
}
.brand-word__suffix {
  margin-top: 2px;
  font-weight: 500;
  font-size: 0.75rem;
  font-style: italic;
  color: var(--color-ink-muted);
}
.site-nav__links ul {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}
.site-nav__links a {
  display: inline-block;
  padding: 8px 4px;
  color: var(--color-ink);
  font-weight: 500;
  font-size: 1rem;
  transition: color var(--dur-fast) var(--ease-standard);
  position: relative;
}
.site-nav__links a:hover { color: var(--color-primary-blue); }
.site-nav__links a[aria-current="page"] {
  color: var(--color-primary-blue);
}
.site-nav__links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 4px; right: 4px; bottom: 2px;
  height: 2px;
  background: var(--color-primary-blue);
  border-radius: 1px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
  border-radius: var(--radius-md);
  z-index: var(--z-mobile-nav-toggle);
}
.nav-toggle__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--dur-standard) var(--ease-standard),
              opacity var(--dur-fast) var(--ease-standard);
}
.nav-toggle__bar + .nav-toggle__bar { margin-top: 5px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-nav);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  padding: 100px var(--gutter) 40px;
  display: none;
}
.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-nav a {
  display: block;
  padding: 16px 4px;
  color: var(--color-ink);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border-bottom: 1px solid var(--color-border-sky);
}
body[data-mobile-nav-open="true"] { overflow: hidden; }
body[data-mobile-nav-open="true"] .mobile-nav { display: block; }

@media (max-width: 860px) {
  .site-nav__links { display: none; }
  .nav-toggle { display: flex; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(56px, 10vh, 120px) var(--space-section);
  overflow: hidden;
  isolation: isolate;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}
.hero__copy {
  max-width: 780px;
  position: relative;
  z-index: 2;
}
.hero__line {
  display: block;
  overflow: clip;
}
.hero__lede {
  margin-block: clamp(20px, 3vw, 32px) clamp(28px, 4vw, 40px);
  color: var(--color-ink-muted);
  font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
  line-height: var(--leading-body);
  max-width: 52ch;
  text-wrap: pretty;
}

.hero__figure {
  position: absolute;
  right: -18%;
  top: -80px;
  bottom: -80px;
  width: 72%;
  max-width: 900px;
  pointer-events: none;
  z-index: 1;
}
.hero-arcs { width: 100%; height: 100%; }

@media (max-width: 720px) {
  .hero__figure {
    position: relative;
    inset: auto;
    width: 100%;
    height: 240px;
    margin-top: var(--space-lg);
  }
}

/* ---------- Section head ---------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: clamp(40px, 6vw, 64px);
  max-width: 720px;
}
.section-head--center {
  align-items: center;
  text-align: center;
  margin-inline: auto;
}

/* ---------- Services ---------- */
.services {
  background: var(--color-surface-sky);
  padding-block: var(--space-section);
}
.services__head { max-width: 780px; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(16px, 2vw, 20px);
}
.service-grid > li {
  overflow: clip;
  border-radius: var(--radius-xl);
}
.service-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-tile-rest);
  transition:
    box-shadow var(--dur-standard) var(--ease-standard),
    transform var(--dur-standard) var(--ease-standard);
  height: 100%;
}
.service-card:hover {
  box-shadow: var(--shadow-tile-hover);
  transform: translateY(-3px);
}
.service-card__icon {
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.service-card__title {
  margin: 0;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
}

@media (prefers-reduced-motion: reduce) {
  .service-card:hover { transform: none; }
}

/* ---------- Lab ---------- */
.lab {
  padding-block: var(--space-section);
  background: var(--color-surface);
  overflow: clip;
}
.lab__grid {
  display: grid;
  grid-template-columns: minmax(280px, 5fr) minmax(0, 7fr);
  column-gap: clamp(48px, 5vw, 72px);
  align-items: start;
  max-width: var(--container);
}
.lab__figure {
  position: relative;
  isolation: isolate;
  grid-column: 1;
  grid-row: 1 / 4;
  align-self: start;
  justify-self: start;
  width: min(100%, 460px);
  margin: clamp(20px, 3vw, 40px) 0 0 clamp(-40px, -3vw, -24px);
}
.lab__figure::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: -4% 11% 10% -12%;
  border-radius: 36% 16% 40% 10% / 25% 20% 38% 42%;
  background: var(--color-primary-blue);
  transform: rotate(-2deg);
}
.lab-schematic {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  height: auto;
  border: 10px solid var(--color-surface);
  border-radius: var(--radius-xl);
  transform-origin: 50% 12%;
  filter: drop-shadow(0 14px 10px rgba(15, 23, 42, 0.12));
}

.lab__body { display: contents; }
.lab__intro {
  grid-column: 2;
  grid-row: 1;
  max-width: 640px;
}

.lab-list {
  display: grid;
  grid-column: 2;
  grid-row: 2;
  gap: clamp(20px, 2.5vw, 28px);
  margin-block: var(--space-lg) var(--space-lg);
  max-width: 640px;
}
.lab-list__item { display: flex; flex-direction: column; gap: 6px; }
.lab-list__item dt {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-ink);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.005em;
}
.lab-list__item dd {
  margin: 0;
  padding-left: 32px;
  color: var(--color-ink-muted);
  font-size: 1rem;
  line-height: var(--leading-body);
  max-width: 62ch;
  text-wrap: pretty;
}
.lab-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-vermillion);
  flex: 0 0 20px;
}

.lab__cta-lede {
  color: var(--color-ink);
  font-weight: 500;
  font-size: 1.0625rem;
  margin-bottom: var(--space-sm);
}
.lab__footer {
  grid-column: 2;
  grid-row: 3;
  max-width: 640px;
}

@media (max-width: 860px) {
  .lab__grid {
    grid-template-columns: minmax(0, 1fr);
    column-gap: 0;
  }
  .lab__intro,
  .lab-list,
  .lab__footer {
    grid-column: 1;
    max-width: none;
  }
  .lab__intro { grid-row: 1; }
  .lab__figure {
    grid-column: 1;
    grid-row: 2;
    justify-self: center;
    width: min(84%, 480px);
    height: clamp(210px, 38vw, 260px);
    margin: var(--space-lg) auto 0;
  }
  .lab__figure::before {
    inset: -8% 9% 14% -8%;
    border-radius: 34% 16% 38% 12% / 28% 22% 42% 36%;
  }
  .lab-schematic {
    width: 100%;
    max-width: none;
    height: 100%;
    border-width: 8px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    object-position: center 66%;
    filter: drop-shadow(0 8px 6px rgba(15, 23, 42, 0.1));
  }
  .lab-list {
    grid-row: 3;
    margin-top: var(--space-xl);
  }
  .lab__footer { grid-row: 4; }
}

@media (max-width: 480px) {
  .lab__figure {
    width: min(86%, 320px);
    height: 180px;
  }
  .lab-list__item dt { align-items: flex-start; }
  .lab-arrow { margin-top: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  .lab-schematic { transform: none; }
}

/* ---------- About slab ---------- */
.about {
  padding-block: var(--space-section);
  background: var(--color-surface);
}
.about__slab {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: clamp(56px, 8vw, 112px) clamp(28px, 5vw, 80px);
  background: var(--color-primary-blue);
  isolation: isolate;
  min-height: 480px;
  display: flex;
}
.about__photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  filter: contrast(1.1) saturate(1.15);
}
.about__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    rgba(3, 62, 185, 0.72) 0%,
    rgba(3, 62, 185, 0.55) 45%,
    rgba(3, 62, 185, 0.78) 100%
  );
  z-index: 1;
}
.about__content {
  position: relative;
  z-index: 2;
  max-width: 620px;
  margin-left: auto;
  color: var(--color-ink-inverse);
}
.display--about {
  color: var(--color-ink-inverse);
  font-size: clamp(2.25rem, 4.6vw, 3.75rem);
  margin-bottom: 28px;
}
.about__body {
  color: rgba(255, 255, 255, 0.92);
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: var(--leading-body);
  max-width: 60ch;
  text-wrap: pretty;
}

/* ---------- Compliance ---------- */
.compliance {
  background: var(--color-surface);
  padding-block: clamp(56px, 8vw, 96px);
}
.compliance__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  text-align: center;
}
.compliance__label {
  color: var(--color-ink-muted);
  font-size: 1rem;
  font-weight: 500;
}
.compliance__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(20px, 3vw, 48px);
}
.compliance-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-sky);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
  transition: transform var(--dur-standard) var(--ease-standard),
              box-shadow var(--dur-standard) var(--ease-standard);
}
.compliance-logo {
  display: block;
  width: 64px;
  height: 64px;
  object-fit: contain;
}
.compliance-logo--prop-65 {
  width: 62px;
  height: 62px;
}
.compliance-logo--fda {
  width: 68px;
  height: 68px;
}
.compliance__grid li:hover .compliance-chip {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}
.compliance__note {
  color: var(--color-ink-muted);
  font-size: 0.8125rem;
  font-style: italic;
  opacity: 0.7;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-surface-sky);
  padding-block: var(--space-section);
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(20px, 2vw, 28px);
}
.contact-card {
  padding: 32px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-tile-rest);
  height: 100%;
  transition:
    box-shadow var(--dur-standard) var(--ease-standard),
    transform var(--dur-standard) var(--ease-standard);
}
.contact-card:hover {
  box-shadow: var(--shadow-tile-hover);
  transform: translateY(-3px);
}
.contact-card__icon {
  display: inline-flex;
  margin-bottom: 20px;
}
.contact-card__title {
  color: var(--color-accent-vermillion);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.005em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.contact-card__body {
  color: var(--color-ink-muted);
  font-size: 1rem;
  line-height: var(--leading-body);
}
.contact-card__body a {
  color: var(--color-ink-muted);
  text-decoration: underline;
  text-decoration-color: var(--color-border-sky);
  text-underline-offset: 4px;
  transition: color var(--dur-fast) var(--ease-standard),
              text-decoration-color var(--dur-fast) var(--ease-standard);
}
.contact-card__body a:hover {
  color: var(--color-primary-blue);
  text-decoration-color: var(--color-primary-blue);
}

@media (prefers-reduced-motion: reduce) {
  .contact-card:hover, .compliance__grid li:hover .compliance-chip { transform: none; }
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: 40px;
  border-top: 1px solid var(--color-border-hairline);
  background: var(--color-surface);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-md);
  align-items: center;
}
.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 20px;
}
.site-footer__brand .site-nav__brand { gap: 10px; }
.site-footer__brand .brand-mark { width: 36px; }
.site-footer__brand .brand-word__name { font-size: 1.125rem; }
.site-footer__brand .brand-word__suffix { font-size: 0.6875rem; }
.site-footer__copy {
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
}
.site-footer__links ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(16px, 2.4vw, 32px);
}
.site-footer__links a {
  color: var(--color-ink-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--dur-fast) var(--ease-standard);
}
.site-footer__links a:hover { color: var(--color-primary-blue); }
.site-footer__social {
  color: var(--color-ink-muted);
  transition: color var(--dur-fast) var(--ease-standard);
}
.site-footer__social:hover { color: var(--color-primary-blue); }

@media (max-width: 720px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--space-md);
  }
  .site-footer__brand { flex-direction: column; gap: 8px; }
}

/* Content ships visible; JS may add a subtle enter transform on cards only. */