/* The book site (book-site.md §6). The cover's two-face thesis as
   CSS: Heros-class grotesque for chrome (masthead, headings,
   footer), Pagella-class humanist serif for running text. System
   stacks stand in for the TeX Gyre faces — nothing is fetched.
   One restrained accent for the map interaction; no other color. */

:root {
  --ink: #111;
  --paper: #fffdf8;
  --field: #3a2d21;        /* the wrap's sampled floor brown */
  --accent: #1f4f7a;       /* map highlight: instrument blue, not war-mark red */
  --chrome: "TeX Gyre Heros", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --text: "TeX Gyre Pagella", Palatino, "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: 1.05rem;
  line-height: 1.55;
}

/* --- masthead: the cover's dark field --------------------------- */
.masthead {
  background: var(--field);
  color: #f2ede3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  padding: 3rem 1.5rem;
  flex-wrap: wrap;
}
.masthead .cover {
  width: 220px;
  height: auto;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
}
.mast-text { text-align: center; font-family: var(--chrome); }
.mast-text h1 {
  font-size: 1.9rem;
  font-weight: normal;
  letter-spacing: 0.22em;
  margin: 0 0 0.8rem;
}
.mast-text .subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  margin: 0 0 3rem;
}
.mast-text .byline {
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  margin: 0;
}
.mast-text .byline em { font-family: var(--text); letter-spacing: 0.02em; }

/* --- column ----------------------------------------------------- */
main { max-width: 42rem; margin: 0 auto; padding: 1rem 1.25rem 3rem; }
h2 {
  font-family: var(--chrome);
  font-size: 0.95rem;
  font-weight: normal;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 2.8rem 0 1rem;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.35rem;
}
section p { margin: 0 0 0.8rem; }
a { color: inherit; }
a:hover { color: var(--accent); }

.deal { margin-top: 2.2rem; }
.deal blockquote {
  margin: 1.4rem 2rem 0;
  font-style: italic;
}
.deal blockquote p { margin: 0 0 0.3rem; }

.doors ol { padding-left: 1.4rem; }
.doors li { margin-bottom: 0.9rem; }
.doors .position { font-size: 0.9rem; opacity: 0.85; }
code {
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.05em 0.3em;
}

/* --- the plate --------------------------------------------------- */
.plate-hint { font-size: 0.9rem; opacity: 0.85; }
.plate-figure { margin: 1rem 0 0; }
.plate-figure svg { width: 100%; height: auto; display: block; }

/* interaction: thicken + tint the hovered/focused element */
.a-e, .a-n { cursor: pointer; outline: none; }
.a-e:hover path, .a-e:focus path, .a-e.hl path,
.a-n:hover circle, .a-n:focus circle, .a-n.hl circle,
.a-n:hover rect, .a-n:focus rect, .a-n.hl rect {
  stroke: var(--accent);
}
.a-e:hover path[stroke-opacity="0"],
.a-e:focus path[stroke-opacity="0"],
.a-e.hl path[stroke-opacity="0"] { stroke: #000; }
.a-n:hover circle[fill-opacity], .a-n:focus circle[fill-opacity],
.a-n.hl circle[fill-opacity] { fill: #000; }
.a-n:hover circle:not([fill-opacity]), .a-n:focus circle:not([fill-opacity]),
.a-n.hl circle:not([fill-opacity]) { fill: var(--accent); }

#atlas-panel {
  min-height: 7.5rem;
  border: 1px solid var(--ink);
  padding: 0.8rem 1rem;
  margin-top: 1rem;
  font-size: 0.92rem;
}
#atlas-panel .panel-idle { opacity: 0.55; font-style: italic; margin: 0; }
#atlas-panel h3 {
  font-family: var(--chrome);
  font-size: 0.95rem;
  font-weight: bold;
  letter-spacing: 0.06em;
  margin: 0 0 0.4rem;
}
#atlas-panel .fields { margin: 0 0 0.4rem; }
#atlas-panel .tier {
  font-family: var(--chrome);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--ink);
  padding: 0.08em 0.45em;
  margin-left: 0.5em;
  white-space: nowrap;
}
#atlas-panel .notes { margin: 0; font-size: 0.88rem; opacity: 0.9; }

/* --- making + footer -------------------------------------------- */
.making h2 { margin-top: 3rem; }
.record-links { padding-left: 1.4rem; font-size: 0.95rem; }
.record-links li { margin-bottom: 0.35rem; }

footer {
  font-family: var(--chrome);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-align: center;
  border-top: 1px solid var(--ink);
  margin-top: 1rem;
  padding: 1.5rem 1.25rem 2.5rem;
  opacity: 0.9;
}
footer p { margin: 0 0 0.5rem; }

/* --- making subpage --------------------------------------------- */
.masthead-sub { padding: 2rem 1.5rem; }
.masthead-sub h1 { font-size: 1.15rem; margin: 0; }
.crumb {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  margin: 0 0 1rem;
  opacity: 0.75;
}
.crumb a { text-decoration: none; }
.crumb a:hover { color: inherit; text-decoration: underline; }
.editions p { font-size: 0.95rem; }

@media (max-width: 40rem) {
  .masthead { gap: 1.5rem; padding: 2rem 1rem; }
  .masthead .cover { width: 150px; }
  .mast-text h1 { font-size: 1.3rem; }
  .mast-text .subtitle { margin-bottom: 1.6rem; }
}