/* landing.css — pre-deployment holding page for olmoslm.com.
   Quiet B&W; respects prefers-color-scheme + prefers-reduced-motion.
   Inline-styles would be blocked by the site CSP `style-src 'self'`,
   so this lives as an external sheet served from the same origin. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100svh;
  display: grid;
  grid-template-rows: 1fr auto;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-weight: 400;
  color: #0a0a0a;
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
@media (prefers-color-scheme: dark) {
  body { color: #f5f5f5; background: #000000; }
}

.skip-link {
  position: absolute; top: 8px; left: 8px;
  padding: 8px 14px; border-radius: 6px;
  background: #0a0a0a; color: #ffffff;
  font-size: 13px; font-weight: 500;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); outline: 2px solid #0a0a0a; outline-offset: 2px; }
@media (prefers-color-scheme: dark) {
  .skip-link { background: #f5f5f5; color: #000000; }
  .skip-link:focus { outline-color: #f5f5f5; }
}

main {
  display: grid;
  place-items: center;
  gap: clamp(14px, 3vw, 24px);
  padding: clamp(24px, 6vw, 64px);
  text-align: center;
}

.monogram {
  font-family: 'Fraunces', 'Times New Roman', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(160px, 30vw, 360px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: currentColor;
  animation: monogramRise 1400ms cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes monogramRise {
  0%   { opacity: 0; transform: translateY(18px); letter-spacing: -0.06em; }
  100% { opacity: 1; transform: translateY(0);    letter-spacing: -0.02em; }
}

.rule {
  width: clamp(48px, 8vw, 96px);
  height: 1px;
  background: currentColor;
  opacity: 0.42;
  animation: ruleGrow 1600ms 280ms cubic-bezier(0.16, 1, 0.3, 1) both;
  transform-origin: center;
}
@keyframes ruleGrow {
  0%   { transform: scaleX(0); opacity: 0; }
  100% { transform: scaleX(1); opacity: 0.42; }
}

.label {
  font-size: clamp(12px, 1.3vw, 14px);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: 0.85;
  animation: gentleFade 1400ms 420ms ease both;
  --end-opacity: 0.85;
}
.sublabel {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(15px, 1.6vw, 19px);
  opacity: 0.65;
  animation: gentleFade 1400ms 620ms ease both;
  --end-opacity: 0.65;
}
@keyframes gentleFade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: var(--end-opacity, 1); transform: translateY(0); }
}

footer {
  padding: 20px clamp(20px, 4vw, 48px) 28px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.45;
  transition: opacity 200ms ease;
}
footer:hover, footer:focus-within { opacity: 0.75; }
footer a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: opacity 200ms ease;
}
footer a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
  border-radius: 2px;
}
.footer-dot {
  display: inline-block;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
  margin: 0 6px 2px;
  vertical-align: middle;
}

@media (prefers-reduced-motion: reduce) {
  .monogram, .rule, .label, .sublabel { animation: none; opacity: 1; transform: none; }
  .rule { transform: scaleX(1); opacity: 0.42; }
  html { scroll-behavior: auto; }
}