/* Page shell: background layers, header, section rhythm, footer, and the
   breakpoints the generated markup never had. */

.page {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

/* ---- Fixed background layers ------------------------------------------ */

.bg-rain,
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-rain {
  width: 100%;
  height: 100%;
  opacity: 0.16;
}

.bg-grid {
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
}

.bg-grid--centered {
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}

/* ---- Header ----------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 9, 11, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  height: 34px;
  width: auto;
  mix-blend-mode: screen;
}

.brand__mark--sm {
  height: 30px;
}

.brand__parent {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: var(--dim);
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

.nav {
  display: flex;
  gap: clamp(16px, 2.4vw, 34px);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav a {
  opacity: 0.72;
  transition: opacity 0.2s var(--ease), color 0.2s var(--ease);
}

.nav a:hover {
  opacity: 1;
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* Reads as the same tier of flat mono text as the nav and the LOGIN link —
   a bordered box here competed with the URGENT RESPONSE button next to it. */
.lang {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

.lang__btn {
  background: none;
  border: 0;
  padding: 0;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.lang__btn:hover {
  color: var(--fg);
}

.lang__btn[aria-pressed="true"] {
  color: var(--accent);
}

.lang__sep {
  color: rgba(255, 255, 255, 0.2);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Divider borrowed from .brand__parent, so the language group reads as its
   own unit instead of running into LOGIN. */
.header-link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim);
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

.header-link:hover {
  color: var(--fg);
}

.btn-urgent {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  padding: 9px 16px;
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn-urgent:hover {
  color: var(--fg);
  background: rgba(255, 31, 31, 0.22);
  box-shadow: 0 0 26px var(--accent-glow);
}

/* ---- Sections --------------------------------------------------------- */

.section {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--section-y);
}

.section--hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 60px;
  align-items: center;
  padding-top: clamp(48px, 7vw, 96px);
}

.section--ruled {
  border-top: 1px solid var(--line);
  padding-top: var(--section-y);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 52px;
}

.section-head__lead {
  max-width: 360px;
  color: var(--dim);
  font-size: 15px;
  line-height: 1.6;
}

/* ---- Shared grid primitives ------------------------------------------- */

/* Hairline grid: 1px gaps over a line-coloured backdrop read as dividers
   between cells without each cell needing its own borders. */
.hairline-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.hairline-grid > * {
  background: var(--bg);
}

.hairline-grid--cells > * {
  background: var(--bg-cell);
}

.hairline-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.hairline-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.hairline-grid--metrics {
  grid-template-columns: repeat(3, 1fr) 1.25fr;
}

.hairline-grid--2 {
  grid-template-columns: 1fr 1fr;
}

/* ---- Footer ----------------------------------------------------------- */

.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 44px var(--gutter) 34px;
}

.site-footer__inner {
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim);
}

.socials {
  display: flex;
  gap: 10px;
}

.social {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--dim);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease),
    box-shadow 0.2s var(--ease), transform 0.2s var(--ease);
}

.social:hover {
  border-color: var(--accent);
  color: var(--fg);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-3px);
}

.colophon {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--faint);
  text-align: right;
  line-height: 1.6;
}

/* ---- Breakpoints ------------------------------------------------------ */

@media (max-width: 1180px) {
  .section--hero,
  .split {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hairline-grid--4,
  .hairline-grid--metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav {
    display: none;
  }
}

@media (max-width: 900px) {
  .hairline-grid--3 {
    grid-template-columns: 1fr;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .site-footer__inner {
    justify-content: flex-start;
  }

  .colophon {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .hairline-grid--4,
  .hairline-grid--metrics,
  .hairline-grid--2 {
    grid-template-columns: 1fr;
  }

  .brand__parent {
    display: none;
  }

  .header-link {
    display: none;
  }
}