/*
  File: meadnyte-site/assets/css/layout.css
  Phase: 03_Global_Page_Scaffold_and_Viewport

  Purpose:
  - Restores the landing page as a portal-first threshold.
  - Removes the forced long-page behavior created for the temporary stacked-room scaffold.
  - Keeps the orbital stage centered and visible.
  - Allows only controlled overflow on cramped screens.
  - Does not modify orbital planet design or speed.

  Future modification instructions:
  - Use this file only for page-level viewport, scroll, section containment, footer visibility, and threshold relationship.
  - Do not tune starfield density here.
  - Do not tune planet design or speed here.
  - Do not restore stacked room cards here.
*/

html {
  min-height: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 0;
  background: #03030a;
}

body.meadnyte-entry-page {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  overflow-y: hidden;
  background:
    radial-gradient(circle at 50% 12%, rgba(77, 62, 122, 0.2), transparent 34rem),
    radial-gradient(circle at 50% 58%, rgba(7, 10, 26, 0.94), #020208 68%);
  color: rgba(246, 238, 218, 0.92);
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 9999;
  transform: translateY(-160%);
  padding: 0.7rem 0.95rem;
  border: 1px solid rgba(231, 203, 142, 0.45);
  border-radius: 999px;
  background: rgba(5, 5, 14, 0.92);
  color: rgba(255, 243, 212, 0.96);
  text-decoration: none;
  transition: transform 180ms ease;
}

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

.entry-header {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 80;
  width: 100%;
  height: 0;
  pointer-events: none;
}

.entry-woodmark {
  pointer-events: auto;
}

.entry-main {
  position: relative;
  z-index: 5;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
}

.entry-threshold {
  position: relative;
  z-index: 10;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  isolation: isolate;
  padding:
    clamp(5rem, 8vh, 6.75rem)
    clamp(1rem, 3vw, 2.5rem)
    clamp(4.25rem, 8vh, 6.5rem);
}

.entry-threshold::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  z-index: 2;
  height: min(22vh, 13rem);
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(3, 3, 10, 0.58) 62%,
    rgba(3, 3, 10, 0.9)
  );
}

.entry-threshold > * {
  position: relative;
}

.entry-threshold .orbital-stage {
  z-index: 20;
}

.threshold-scroll-cue {
  position: absolute;
  left: 50%;
  bottom: clamp(1.15rem, 3vh, 2rem);
  z-index: 30;
  display: inline-grid;
  justify-items: center;
  gap: 0.45rem;
  transform: translateX(-50%);
  color: rgba(237, 213, 161, 0.72);
  text-decoration: none;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: clamp(0.58rem, 1vw, 0.68rem);
  line-height: 1;
  opacity: 0.84;
}

.threshold-scroll-cue:hover,
.threshold-scroll-cue:focus-visible {
  color: rgba(255, 239, 194, 0.96);
  opacity: 1;
}

.threshold-scroll-cue__mark {
  width: 1px;
  height: clamp(1.65rem, 4vh, 2.5rem);
  background: linear-gradient(
    to bottom,
    rgba(237, 213, 161, 0.05),
    rgba(237, 213, 161, 0.78),
    rgba(237, 213, 161, 0.05)
  );
}

.entry-footer {
  display: none;
}

@media (max-width: 900px) {
  .entry-threshold {
    padding:
      clamp(5.25rem, 10vh, 7rem)
      clamp(0.85rem, 3vw, 1.5rem)
      clamp(4.75rem, 9vh, 7rem);
  }
}

@media (max-width: 620px) {
  body.meadnyte-entry-page {
    overflow-y: auto;
  }

  .entry-threshold {
    height: auto;
    min-height: 100svh;
    place-items: center;
    padding-top: clamp(5.75rem, 12vh, 7rem);
    padding-bottom: clamp(5.25rem, 12vh, 7.5rem);
  }

  .threshold-scroll-cue {
    bottom: clamp(0.85rem, 2vh, 1.25rem);
  }
}

@media (max-height: 720px) and (min-width: 700px) {
  body.meadnyte-entry-page {
    overflow-y: auto;
  }

  .entry-threshold {
    height: auto;
    min-height: 44rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}