@font-face {
  font-family: "Die Grotesk";
  src: url("../fonts/die-grotesk/DieGroteskVF-Roman.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --canvas: oklch(0.226 0.013 161.026);
  --marble-opacity: 0.16;
  --ink: oklch(0.9267 0.0135 115.846);
  --muted: oklch(0.77159 0.02432 143.331);
  --gutter: clamp(1.25rem, 5.333vw, 5rem);
  --title-height-limit: min(30svh - 8rem, 24svh - 4.5rem);
  --title-size: clamp(3.25rem, min(19cqw, var(--title-height-limit)), 28rem);
  --subtitle-size: clamp(1.25rem, 1rem + 0.75vw, 1.625rem);
  font-family: "Die Grotesk", Arial, sans-serif;
  font-synthesis: none;
  font-kerning: normal;
  background: var(--canvas);
  color: var(--ink);
}

:root:lang(es) {
  --title-size: clamp(2.75rem, min(16.5cqw, var(--title-height-limit) * 0.76), 28rem);
}

:root:lang(fr) {
  --title-size: clamp(3.25rem, min(18cqw, var(--title-height-limit) * 0.9), 28rem);
}

* { box-sizing: border-box; }

body {
  isolation: isolate;
  margin: 0;
  min-block-size: 100svh;
  display: flex;
  flex-direction: column;
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Faint, large-scale marble sits behind all content without a repeating pattern. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: var(--marble-opacity);
  background: url("../textures/charcoal-marble.jpg") center / cover no-repeat;
}

@media (forced-colors: active) {
  body::before { display: none; }
}

.frame {
  padding-inline: max(var(--gutter), env(safe-area-inset-left)) max(var(--gutter), env(safe-area-inset-right));
}

a { color: inherit; text-decoration: none; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 6px;
}

::selection { color: var(--canvas); background: oklch(0.87 0.039 85); }

.skip-link {
  position: absolute;
  inset-block-start: 0.75rem;
  inset-inline-start: var(--gutter);
  z-index: 1;
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--canvas);
  transform: translateY(-200%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "brand language contact";
  align-items: center;
  gap: 1rem;
  padding-block-start: max(clamp(1.25rem, 3vw, 2.375rem), env(safe-area-inset-top));
}

.wordmark,
.contact-cta {
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
}

.wordmark {
  grid-area: brand;
  justify-self: start;
  font-size: clamp(1.375rem, 1.2rem + 0.5vw, 1.5625rem);
  font-weight: 500;
  line-height: 1.2;
}

.contact-cta {
  grid-area: contact;
  justify-self: end;
  gap: 0.3em;
  font-size: 1rem;
  white-space: nowrap;
}

.contact-cta span { transition: transform 180ms ease-out; }

.language-switcher {
  grid-area: language;
  display: flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.language-switcher a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-inline-size: 2.25rem;
  min-block-size: 2.75rem;
}

.language-switcher a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.35em;
}

.language-switcher span { opacity: 0.5; }

.hero {
  container-type: inline-size;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding-block: clamp(2rem, 4svh, 4rem) clamp(2.5rem, 6svh, 6rem);
}

.hero-title {
  inline-size: 100%;
  margin: 0;
  font-size: var(--title-size);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.00625em;
  overflow-wrap: anywhere;
}

.hero-title > span { display: block; }

/* Let the opening phrases share a line only when their actual width fits.
   One continuous type scale avoids the old aspect-ratio size switch. */
.hero-title > span:nth-child(-n + 2) {
  display: inline-block;
  vertical-align: top;
}

/* Optical offsets follow each opening letter, not the heading's box. */
:lang(en) .hero-title > span:first-child { margin-inline-start: -0.0175em; }
:lang(en) .hero-title > span:nth-child(2),
:lang(es) .hero-title > span:first-child,
:lang(fr) .hero-title > span:first-child { margin-inline-start: -0.02em; }
:lang(en) .hero-title > span:last-child { margin-inline-start: 0.0025em; }
:lang(es) .hero-title > span:nth-child(2),
:lang(fr) .hero-title > span:nth-child(2) { margin-inline-start: -0.0025em; }
:lang(es) .hero-title > span:last-child { margin-inline-start: -0.02em; }
:lang(fr) .hero-title > span:last-child {
  margin-inline-start: -0.005em;
  text-indent: 0.0125em;
}

.keep-together { white-space: nowrap; }

.hero-subtitle {
  max-inline-size: 46ch;
  margin: clamp(1.5rem, 3svh, 3rem) 0 0;
  font-size: var(--subtitle-size);
  font-weight: 400;
  line-height: 1.48;
  text-wrap: balance;
}

.hero-technical {
  max-inline-size: min(72ch, 36rem);
  margin: clamp(1.5rem, 2.5svh, 2.5rem) 0 0;
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-wrap: pretty;
}

.compatibility {
  --logo-scale: 1;
  padding-block-end: clamp(1.5rem, 3svh, 2.5rem);
  color: var(--muted);
}

.compatibility-logos {
  display: grid;
  grid-template-columns: repeat(17, calc(1.5rem * var(--logo-scale)));
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.provider-logo {
  display: block;
  inline-size: calc(1.5rem * var(--logo-scale));
  block-size: calc(1.5rem * var(--logo-scale));
  background-color: currentColor;
  opacity: 0.75;
  -webkit-mask: var(--logo) center / contain no-repeat;
  mask: var(--logo) center / contain no-repeat;
  mask-mode: var(--logo-mode, alpha);
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  align-items: end;
  gap: clamp(1rem, 4vw, 3rem);
  margin-block-start: auto;
  padding-block-end: max(clamp(1.5rem, 3.333vw, 3rem), env(safe-area-inset-bottom));
}

.site-footer address {
  max-inline-size: 40rem;
  font-size: 0.875rem;
  font-style: normal;
  line-height: 1.5;
  color: var(--muted);
  text-wrap: pretty;
}

.contact-email {
  display: flex;
  align-items: end;
  min-block-size: 44px;
  font-size: clamp(0.9375rem, 0.875rem + 0.25vw, 1.0625rem);
  line-height: 1.25;
  white-space: nowrap;
}

@media (max-width: 47.999rem) {
  .site-header {
    grid-template-columns: 1fr auto;
    grid-template-areas: "brand contact" "language language";
    row-gap: 0;
  }

  .language-switcher { justify-self: end; }
  .hero { padding-block: 1.5rem; }
  .hero-subtitle { margin-block-start: 1.5rem; }
  .compatibility { --logo-scale: 0.75; }
  .compatibility-logos {
    grid-template-columns: repeat(12, calc(1.5rem * var(--logo-scale)));
    gap: 0.75rem 0.25rem;
  }
}

@media (min-width: 48rem) and (max-height: 64rem) {
  .hero { padding-block: 1.25rem 1.5rem; }
  .compatibility-logos { row-gap: 0.75rem; }
}

@media (max-width: 22rem) {
  .contact-cta { font-size: 0.875rem; }
}

@media (hover: hover) {
  .language-switcher a:hover { color: var(--ink); }
  .contact-cta:hover,
  .contact-email:hover { text-decoration: underline; text-underline-offset: 0.3em; }
  .contact-cta:hover span { transform: translate(2px, -2px); }
}

@media (prefers-reduced-motion: reduce) {
  .contact-cta span { transition: none; }
}

/* Small discoveries, with no movement or changes to the resting composition. */
[hidden] { display: none !important; }
.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.hero-heading { position: relative; inline-size: 100%; }
button.control-stop {
  position: relative;
  display: inline;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
}
button.control-stop::after {
  content: "";
  position: absolute;
  inset-inline-start: 50%;
  inset-block-end: 0;
  min-inline-size: 44px;
  min-block-size: 44px;
  inline-size: 100%;
  block-size: 100%;
  transform: translateX(-50%);
}
.control-note {
  position: absolute;
  inset-block-start: 100%;
  inset-inline-start: 0;
  margin: 0;
  padding-block-start: 0.375rem;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.2;
}
.wordmark[aria-describedby] { -webkit-touch-callout: none; user-select: none; }
.barcelona-signature {
  position: absolute;
  inset-inline-start: var(--gutter);
  inset-block-start: calc(100% + 0.25rem);
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.4;
  pointer-events: none;
}
.layout-grid {
  position: fixed;
  z-index: 5;
  inset: 0 var(--gutter);
  pointer-events: none;
  border-inline: 1px solid oklch(0.87 0.039 85 / 0.25);
  background-image:
    linear-gradient(to right, oklch(0.87 0.039 85 / 0.17) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(0.87 0.039 85 / 0.1) 1px, transparent 1px);
  background-size: calc(100% / 12) 100%, 100% 8px;
}
.discovery-control {
  position: fixed;
  inset-block-end: 1rem;
  inset-inline-start: var(--gutter);
  z-index: 6;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--muted);
  background: var(--canvas);
  color: var(--ink);
  font: inherit;
  font-size: 0.875rem;
}
.discovery-control:not(:focus-visible) { clip-path: inset(50%); pointer-events: none; }
.print-note { display: none; }

/* Companion pages share the same typography and four-corner frame. */
.companion .hero-title {
  max-inline-size: 13ch;
  font-size: clamp(3.5rem, 10vw, 12rem);
}
.companion .eyebrow { color: var(--muted); font-size: 0.8125rem; }
.return-link { display: inline-flex; align-items: center; gap: 0.3em; min-block-size: 44px; margin-block-start: 1.5rem; }
.principles-list { margin: 0; padding: 0; list-style: none; }
.principles-list li { font-size: clamp(1.75rem, 5.5vw, 6rem); line-height: 1.12; letter-spacing: -0.02em; }
.principles-list li + li { margin-block-start: 0.18em; }
.principles .hero-title { font-size: 1rem; color: var(--muted); letter-spacing: 0; margin: 0 0 2rem; }

@media print {
  @page { margin: 18mm; }
  :root, :root:lang(es), :root:lang(fr) {
    color-scheme: light;
    --canvas: oklch(0.986 0.005 115);
    --ink: oklch(0.26 0.013 161);
    --muted: oklch(0.4 0.013 161);
    --title-size: 46pt;
  }
  body { min-block-size: auto; background: none; }
  body::before { display: none; }
  .frame { padding-inline: 0; }
  .site-header { display: block; padding-block: 0 20mm; }
  .hero { container-type: normal; display: block; padding-block: 0 15mm; }
  .hero-title { margin-inline-start: 0; }
  .hero-title > span {
    display: block !important;
    margin-inline-start: 0 !important;
    text-indent: 0 !important;
  }
  .hero-subtitle { margin-block-start: 8mm; font-size: 15pt; }
  .hero-technical { margin-block-start: 7mm; font-size: 11pt; max-inline-size: 100%; }
  .print-note { display: block; margin: 0 0 8mm; font-size: 10pt; color: var(--muted); }
  .site-footer { padding-block: 0; font-size: 9pt; }
  .contact-email { font-size: 10pt; }
  .skip-link, .language-switcher, .contact-cta, .compatibility,
  .control-note, .barcelona-signature, .layout-grid, .discovery-control { display: none !important; }
  button.control-stop::after { display: none; }
  .hero-heading, .site-footer, .principles-list { break-inside: avoid; }
  .companion .hero-title { font-size: 46pt; }
  .principles .hero-title { font-size: 12pt; }
  .principles-list li { font-size: 26pt; }
}