/* Full-viewport cinematic entrance for the homepage only. */
.blackhole-entry {
  position: relative;
  isolation: isolate;
  height: 100svh;
  min-height: 0;
  width: 100%;
  display: grid;
  place-items: end center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 38%, #150d0e 0%, #05060c 41%, #010208 88%);
  color: #f9f5ec;
}
#blackhole-gateway-canvas {
  position: absolute;
  inset: 0;
  z-index: -2;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.blackhole-entry::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg,
     rgba(0,0,0,.045) 0%,
     rgba(1,2,7,0) 35%,
     rgba(1,2,7,.15) 53%,
     rgba(1,2,7,.64) 77%,
     rgba(1,2,7,.94) 100%);
}
.blackhole-entry-content {
  width: 100%;
  padding: 0 24px clamp(56px, 9svh, 106px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 3svh, 37px);
  text-align: center;
  position: relative;
  z-index: 1;
}
.blackhole-entry h1 {
  max-width: min(95vw, 1100px);
  margin: 0;
  font: 400 clamp(3.25rem, 8vw, 8.6rem)/.98 var(--serif, Georgia, serif);
  letter-spacing: -.042em;
  font-kerning: normal;
  text-wrap: balance;
  color: #faf5ec;
  text-shadow: 0 3px 34px rgba(0,0,0,.75), 0 0 60px rgba(0,0,0,.65);
}
.blackhole-enter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  min-width: 177px;
  padding: 15px 33px;
  background: rgba(9,12,20,.65);
  border: 1px solid rgba(230,204,159,.75);
  border-radius: 2px;
  box-shadow: 0 0 30px rgba(194,149,82,.08), inset 0 0 20px rgba(255,255,255,.018);
  color: #f6e6c8;
  font: 600 .75rem/1.3 var(--sans, sans-serif);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .26em;
  cursor: pointer;
  transition: color .3s ease, border-color .3s ease, background .3s ease, box-shadow .3s ease, transform .3s ease;
}
.blackhole-enter:hover {
  transform: translateY(-2px);
  color: #fff;
  background: rgba(56,34,24,.78);
  border-color: #f3d8a5;
  box-shadow: 0 0 38px rgba(217,167,98,.22);
}
.blackhole-enter:focus-visible {
  outline: 3px solid #f2d29a;
  outline-offset: 5px;
}
.blackhole-entry.bh-render-fallback #blackhole-gateway-canvas { opacity: 0; }
.blackhole-entry.bh-render-fallback {
  background: radial-gradient(ellipse 20% 30% at 50% 39%, #000 38%, #e2a365 39%, #a25029 43%, #100a0c 56%, #02030a 88%);
}
/* The first screen has only the black hole, name and Enter button. */
html.bh-gated,
html.bh-gated body { overflow: hidden !important; }
html.bh-gated .home-page .masthead,
html.bh-gated .home-page main > :not(.blackhole-entry),
html.bh-gated .home-page .site-footer,
html.bh-gated .home-page .page-grain,
html.bh-gated .home-page .ambient-field {
  visibility: hidden !important;
  pointer-events: none !important;
}
html.bh-entered .home-page .masthead,
html.bh-entered .home-page main > :not(.blackhole-entry),
html.bh-entered .home-page .site-footer { visibility: visible; }
.home-page .blackhole-entry { z-index: 1; }
#home-content { scroll-margin-top: 76px; }
@media (max-width: 720px) {
  .blackhole-entry { min-height: 0; }
  .blackhole-entry-content { padding-bottom: max(65px, 13svh); gap: 27px; }
  .blackhole-entry h1 { font-size: clamp(3.4rem, 11vw, 5.2rem); max-width: 12ch; }
  #home-content { scroll-margin-top: 65px; }
}
@media (prefers-reduced-motion: reduce) {
  .blackhole-enter { transition: none; }
  html { scroll-behavior: auto !important; }
}

/* Keep the only control visible on unusually short browser windows. */
@media (max-height: 600px) {
  .blackhole-entry-content { padding-bottom: clamp(22px, 6svh, 45px); gap: 16px; }
  .blackhole-entry h1 { font-size: clamp(2.4rem, 7vw, 5.5rem); }
  .blackhole-enter { min-height: 46px; padding: 11px 28px; }
}

/* The full-screen entrance remains clean in landscape and on notched phones. */
@supports(padding-bottom:env(safe-area-inset-bottom)) {
  .blackhole-entry-content { padding-bottom: max(58px, calc(8svh + env(safe-area-inset-bottom))); }
}
@media(max-width:720px) {
  .blackhole-entry-content { padding-bottom: max(65px, calc(11svh + env(safe-area-inset-bottom))); }
}