/* ATRIUM gh-pages stub — self-contained card styles.
   No webfont, no CDN, no script: the page must render with zero external
   requests, because a landing card that waits on a network round-trip is a
   landing card that sometimes shows nothing. System font stack only. */

:root {
  --bg:        #f6f7f9;
  --card:      #ffffff;
  --fg:        #1a1d21;
  --muted:     #5b636e;
  --line:      #dfe3e8;
  --accent:    #6b3fa0;      /* ATRIUM violet, matched to the funded-by badge */
  --accent-fg: #ffffff;
  --chip-bg:   #eef0f4;
  --chip-fg:   #40464f;
  --shadow:    0 1px 2px rgba(16,20,26,.06), 0 8px 24px rgba(16,20,26,.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #0f1216;
    --card:    #171b21;
    --fg:      #e8eaed;
    --muted:   #9aa3af;
    --line:    #2a3038;
    --accent:  #a880e0;
    --accent-fg: #14171c;
    --chip-bg: #222831;
    --chip-fg: #c3cad4;
    --shadow:  0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.45);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 2rem 1rem 3rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  display: flex;
  justify-content: center;
}

.wrap { width: 100%; max-width: 44rem; }

/* ---------- eyebrow ---------- */

.eyebrow {
  display: flex; align-items: center; gap: .5rem;
  font-size: .8125rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 1rem;
}
.eyebrow a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--line); }
.eyebrow a:hover { color: var(--fg); border-bottom-color: currentColor; }
.eyebrow .sep { opacity: .5; }

/* ---------- card ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
  box-shadow: var(--shadow);
}

h1 { font-size: 1.6rem; line-height: 1.3; margin: 0 0 .35rem; letter-spacing: -.01em; }
.sub { color: var(--muted); font-size: 1rem; margin: 0 0 1.25rem; }
.tagline { margin: 0 0 1.5rem; }
.role {
  margin: 0 0 1.5rem; padding: .75rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--chip-bg); border-radius: 0 8px 8px 0;
  font-size: .9375rem; color: var(--chip-fg);
}

/* ---------- chips (badge equivalents, rendered locally) ---------- */

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1.75rem; padding: 0; list-style: none; }
.chips li { margin: 0; }
.chip {
  display: inline-flex; align-items: stretch;
  font-size: .75rem; line-height: 1.7; text-decoration: none;
  border-radius: 5px; overflow: hidden; border: 1px solid var(--line);
}
.chip .k { background: var(--chip-bg); color: var(--chip-fg); padding: 0 .5rem; }
.chip .v { background: var(--card); color: var(--fg); padding: 0 .5rem; font-weight: 600; }
.chip:hover .v { color: var(--accent); }

/* ---------- actions ---------- */

.actions { display: flex; flex-wrap: wrap; gap: .625rem; margin: 0 0 1.75rem; }
.btn {
  display: inline-block; text-decoration: none; font-size: .9375rem; font-weight: 600;
  padding: .625rem 1.125rem; border-radius: 8px; border: 1px solid var(--line);
  color: var(--fg); background: var(--card);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.08); color: var(--accent-fg); }

/* ---------- pipeline strip ---------- */

.pipeline { border-top: 1px solid var(--line); padding-top: 1.25rem; }
.pipeline h2 {
  font-size: .75rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 .75rem; font-weight: 600;
}
.stages { display: flex; flex-wrap: wrap; gap: .3rem; padding: 0; margin: 0; list-style: none; }
.stages li { display: flex; align-items: center; gap: .3rem; }
.stages a, .stages span.here {
  display: inline-block; font-size: .8125rem; text-decoration: none;
  padding: .3rem .6rem; border-radius: 6px; border: 1px solid var(--line); color: var(--muted);
}
.stages a:hover { color: var(--accent); border-color: var(--accent); }
.stages span.here { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); font-weight: 600; }
.stages .arrow { color: var(--muted); opacity: .55; font-size: .75rem; }

/* ---------- footer ---------- */

footer {
  margin-top: 1.5rem; padding-top: 1.25rem;
  font-size: .8125rem; color: var(--muted);
}
footer a { color: var(--muted); }
footer p { margin: .35rem 0; }

/* ---------- 404 variant ---------- */

.notfound-code {
  font-size: .75rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin: 0 0 .5rem;
}

@media (max-width: 30rem) {
  body { padding: 1.25rem .75rem 2rem; }
  .card { padding: 1.35rem; border-radius: 12px; }
  h1 { font-size: 1.3rem; }
  .actions .btn { flex: 1 1 auto; text-align: center; }
}