/* The site masthead and palette on the archive and lessons pages, which keep their own app styles. */
:root {
  /* the archive and lessons apps keep their own variable names; every one now comes from tokens.css */
  --surface: var(--panel); --surface-2: color-mix(in srgb, var(--ink) 9%, var(--panel));
  --text: var(--ink); --muted: var(--grey); --faint: var(--grey);
  --border: var(--rule); --border-strong: color-mix(in srgb, var(--ink) 38%, transparent);
  --accent: var(--link); --accent-soft: color-mix(in srgb, var(--brass) 16%, var(--panel)); --on-accent: var(--on-link);
  --radius: 0px; --shadow: none;
  --site-ink: var(--ink); --site-grey: var(--grey); --site-panel: var(--panel);
}
body.framed { font-family: var(--sans); }
body.framed h1, body.framed h2 { font-family: var(--font-heading); letter-spacing: -.005em; }

.site-frame { font-family: var(--sans); color: var(--site-ink); }
.site-frame .wrap { max-width: 1440px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 80px); }
.site-frame .mast {
  display: flex; align-items: center; gap: 40px; height: 76px; padding: 0; margin: 0;
  background: none; border: 0; position: static; box-shadow: none;
}
.site-frame .mast__mark { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; color: var(--site-ink); }
.site-frame .series { display: grid; grid-template-columns: repeat(5, 5px); height: 26px; }
.site-frame .series i { display: block; }
.site-frame .series i:nth-child(1) { background: var(--chrome); }
.site-frame .series i:nth-child(2) { background: var(--vermilion); }
.site-frame .series i:nth-child(3) { background: var(--cobalt); }
.site-frame .series i:nth-child(4) { background: var(--viridian); }
.site-frame .series i:nth-child(5) { background: var(--site-ink); }
.site-frame .mast__name { font-weight: 500; font-family: var(--font-heading); font-size: 26px; line-height: 1; }
.site-frame .mast__sub { font-weight: 400; font-family: var(--font-heading); font-size: 26px; line-height: 1; color: var(--site-grey); }
.site-frame .mast__nav { display: flex; gap: 28px; font-size: 15px; font-weight: 600; }
.site-frame .mast__nav a { color: var(--site-ink); text-decoration: none; padding: 6px 0; border-bottom: 3px solid transparent; }
.site-frame .mast__nav a[aria-current="page"] { border-bottom-color: var(--site-ink); }
.site-frame .mast__nav a:hover { border-bottom-color: var(--border); }
.site-frame .mast__search { display: flex; align-items: center; gap: 10px; width: 280px; height: 42px; padding: 0 14px; background: var(--site-panel); }
.site-frame .mast__search svg { width: 18px; height: 18px; flex: none; }
.site-frame .mast__search input { border: 0; background: transparent; width: 100%; font-size: 15px; outline: none; color: var(--site-ink); }
.site-frame .visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (max-width: 900px) {
  .site-frame .mast { flex-wrap: wrap; height: auto; padding: 14px 0 12px; gap: 12px 18px; }
  .site-frame .mast__search { order: 3; width: 100%; }
}
@media (max-width: 600px) {
  .site-frame .mast__sub { display: none; }
  .site-frame .mast__name { font-size: 22px; }
  .site-frame .mast__nav { gap: 16px; }
}

/* method chips on the Lessons page: an idea number printed in its part's ink */
.chip { display: inline-block; min-width: 38px; padding: 3px 6px 2px; font-weight: 700; font-size: 13px; line-height: 1.3;
        text-align: center; font-variant-numeric: tabular-nums; text-decoration: none; }
.chip.p-1 { background: var(--chrome); color: var(--black); }
.chip.p-2 { background: var(--vermilion); color: var(--paper); }
.chip.p-3 { background: var(--cobalt); color: var(--paper); }
.chip.p-4 { background: var(--viridian); color: var(--paper); }
.chip.p-5 { background: var(--black); color: var(--paper); box-shadow: inset 0 0 0 1px var(--border-strong); }
.lesson-ideas { margin: 8px 0 12px; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.lesson-ideas a:not(.chip) { color: var(--text); margin-right: 10px; }
@media (max-width: 900px) {
  .site-frame .mast__nav { flex-wrap: wrap; gap: 4px 16px; }
}