/* Shared Projector.Earth document chrome (user guides + whitepaper).
   Star map in the page margins; the reading column is Earth-colored paper. */

:root {
  --space: #081018;
  --paper: #f3efe4;
  --cloud: #fffefb;
  --ink: #1e1914;
  --muted: #5a5148;
  --ocean: #1b6aae;
  --ocean-deep: #134e82;
  --forest: #2f7a3d;
  --leaf: #3d8f4a;
  --soil: #7a5533;
  --sand: #d9cbb3;
  --line: #cfc3b0;
}

* { box-sizing: border-box; }

html {
  scroll-padding-top: 7rem;
}

html, body {
  margin: 0;
  background: var(--space);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.55;
}

.space-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-color: var(--space);
  background-image: url("stars.jpg");
  background-position: center 40%;
  background-size: cover;
  background-repeat: no-repeat;
  opacity: 0.78;
}

.site-chrome {
  position: sticky;
  top: 0;
  z-index: 3;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1.15rem;
  padding: 0.45rem 1.25rem 0.4rem;
  background: rgba(8, 16, 24, 0.88);
  color: var(--paper);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--paper);
  text-decoration: none;
}

.brand-logo {
  display: block;
  height: 4.7rem;
  width: auto;
}

.brand-kind {
  font-size: 0.95rem;
  font-weight: 650;
  letter-spacing: 0.02em;
  color: var(--sand);
  border-left: 1px solid rgba(217, 203, 179, 0.35);
  padding-left: 0.8rem;
  line-height: 1.2;
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
}

.site-header nav a {
  color: #d5d0c6;
  text-decoration: none;
}

.site-header nav a[aria-current="page"],
.site-header nav a:hover {
  color: #9ee0a8;
}

.open-app {
  margin-left: auto;
  color: var(--cloud);
  background: var(--ocean);
  text-decoration: none;
  font-weight: 650;
  font-size: 0.88rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
}

.open-app:hover {
  background: var(--forest);
}

.earth-band {
  height: 6px;
  background: linear-gradient(
    90deg,
    #1b6aae 0%,
    #2f7a3d 30%,
    #c4a574 58%,
    #7a5533 78%,
    #1b6aae 100%
  );
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 1.15rem auto 2.75rem;
  background: var(--paper);
  box-shadow:
    0 0 0 1px rgba(122, 85, 51, 0.14),
    0 16px 40px rgba(0, 0, 0, 0.38);
}

main.guide {
  padding: 1.6rem 1.45rem 3.25rem;
}

.guide h1, .guide h2, .guide h3 {
  line-height: 1.25;
}

.guide h1 {
  font-size: 1.72rem;
  margin: 0 0 0.85rem;
  color: var(--ocean-deep);
}

.guide h1 + p {
  font-size: 1.05rem;
  color: var(--muted);
}

.guide h2 {
  margin-top: 2rem;
  padding-top: 0.45rem;
  border-top: 1px solid var(--line);
  font-size: 1.2rem;
  color: var(--forest);
  scroll-margin-top: 7rem;
}

.guide h3 {
  color: var(--soil);
  font-size: 1.05rem;
}

.guide a { color: var(--ocean); }
.guide a:hover { color: var(--forest); }

.guide img,
.guide video {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1rem 0 0.4rem;
  border: 1px solid var(--sand);
  background: #0b1220;
}

.guide p:has(> img) + p,
.guide p:has(> video) + p,
.guide video + p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 0;
  margin-bottom: 1.6rem;
}

.guide table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 1rem 0;
  background: var(--cloud);
}

.guide th, .guide td {
  border: 1px solid var(--line);
  padding: 0.4rem 0.55rem;
  text-align: left;
  vertical-align: top;
}

.guide th {
  background: #e4efe3;
  color: var(--forest);
}

.guide code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.88em;
  background: #ece6da;
  padding: 0.05em 0.28em;
}

.guide pre {
  background: #ece6da;
  border: 1px solid var(--line);
  padding: 0.75rem 0.9rem;
  overflow: auto;
}

.guide pre code {
  background: none;
  padding: 0;
}

.guide blockquote {
  margin: 1rem 0;
  padding: 0.15rem 0 0.15rem 1rem;
  border-left: 3px solid var(--ocean);
  color: var(--muted);
}

.guide hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 1.5rem 0;
}

.guide p, .guide li {
  color: var(--ink);
}

.site-footer {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 1rem 1.25rem 1.4rem;
  color: var(--sand);
  background: rgba(8, 16, 24, 0.78);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--paper);
  text-decoration: none;
  font-weight: 650;
}

.footer-logo {
  display: block;
  height: 2.4rem;
  width: auto;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  margin-left: auto;
}

.footer-nav a {
  color: var(--sand);
  text-decoration: none;
}

.footer-nav a:hover {
  color: #9ee0a8;
}

a:focus-visible {
  outline: 2px solid #9ee0a8;
  outline-offset: 2px;
}

::selection {
  background: #c5e6d4;
  color: var(--ink);
}

@media (max-width: 56rem) {
  .page-shell {
    margin: 0.7rem 0.65rem 1.75rem;
  }

  main.guide {
    padding: 1.25rem 1rem 2.5rem;
  }
}

@media print {
  .space-bg { display: none; }

  html, body {
    background: #fff;
    color: var(--ink);
  }

  .site-chrome {
    position: static;
  }

  .site-header {
    background: #fff;
    color: var(--ink);
    padding-left: 0;
    padding-right: 0;
  }

  .brand,
  .brand-kind,
  .site-header nav a {
    color: var(--ocean-deep);
  }

  .open-app {
    background: none;
    color: var(--ocean);
    padding: 0;
  }

  .page-shell {
    margin: 0;
    box-shadow: none;
    max-width: none;
  }

  main.guide { padding: 1rem 0 2rem; }

  .site-footer {
    background: none;
    color: var(--muted);
    padding-left: 0;
    padding-right: 0;
  }

  .footer-brand { color: var(--ink); }
  .footer-nav a { color: var(--ocean); }
}