/* stackgnostic.com — hand-built. Base: system serif, one accent, light/dark. */

:root {
  --bg: #faf9f6;
  --ink: #23211e;
  --muted: #6b6659;
  --accent: #2a4d69;        /* the resume steel blue; print and web agree */
  --accent-soft: #2a4d6922;
  --rule: #d9d5cc;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #191b1e;
    --ink: #e8e5de;
    --muted: #9b968a;
    --accent: #7da7c7;
    --accent-soft: #7da7c722;
    --rule: #35383d;
    --card: #202329;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: Charter, Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 1.06rem;
}

/* Per-section accents. Peaches gets to be peach-colored. Nobody can stop us. */
body.sec-peaches   { --accent: #d97742; --accent-soft: #d9774222; }
body.sec-dad       { --accent: #4a7c59; --accent-soft: #4a7c5922; }
body.sec-4plus4    { --accent: #6247aa; --accent-soft: #6247aa22; }
@media (prefers-color-scheme: dark) {
  body.sec-peaches { --accent: #f0996a; --accent-soft: #f0996a22; }
  body.sec-dad     { --accent: #7fb391; --accent-soft: #7fb39122; }
  body.sec-4plus4  { --accent: #a48ad4; --accent-soft: #a48ad422; }
}

.site-head { padding: 1rem 1.5rem; border-bottom: 1px solid var(--rule); }
.site-head nav { max-width: 42rem; margin: 0 auto; display: flex; gap: 1.4rem; align-items: baseline; }
.site-head a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-head a:hover { color: var(--accent); }
.site-head .home-link {
  font-weight: 700; color: var(--accent); font-size: 1.05rem;
  border: 1.5px solid var(--accent); padding: 0 0.45rem; border-radius: 3px;
}

main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; }

h1 { font-size: 1.9rem; line-height: 1.2; margin-bottom: 0.5rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 0.6rem; color: var(--accent); }
h3 { font-size: 1.08rem; margin: 1.4rem 0 0.4rem; }
p + p { margin-top: 0.9rem; }
a { color: var(--accent); }
ul, ol { padding-left: 1.4rem; margin: 0.6rem 0; }
li { margin-bottom: 0.35rem; }

.lede { font-size: 1.15rem; color: var(--muted); margin: 0.4rem 0 1.6rem; }
.post-meta { color: var(--muted); font-size: 0.92rem; margin-bottom: 1.6rem; }

.post-list { list-style: none; padding: 0; }
.post-list li { padding: 0.9rem 0; border-bottom: 1px solid var(--rule); margin: 0; }
.post-list a { text-decoration: none; font-size: 1.12rem; }
.post-list .date { color: var(--muted); font-size: 0.9rem; display: block; }

.empty-state {
  border: 1.5px dashed var(--rule); border-radius: 6px; padding: 1.6rem;
  color: var(--muted); text-align: center; margin-top: 1.5rem; font-style: italic;
}

.site-foot { border-top: 1px solid var(--rule); padding: 1.4rem 1.5rem 2.5rem; }
.site-foot p { max-width: 42rem; margin: 0 auto; color: var(--muted); font-size: 0.9rem; }
.site-foot .fine { font-size: 0.8rem; margin-top: 0.4rem; }

/* ---------- 4+4 page ---------- */
.q-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; margin: 1rem 0 0.4rem; }
@media (max-width: 560px) { .q-grid { grid-template-columns: 1fr; } }
.q-card {
  background: var(--card); border: 1px solid var(--rule); border-left: 4px solid var(--accent);
  border-radius: 6px; padding: 0.9rem 1rem;
}
.q-card .num { font-weight: 700; color: var(--accent); font-size: 0.85rem; letter-spacing: 0.06em; }
.q-card h3 { margin: 0.15rem 0 0.25rem; font-size: 1.02rem; }
.q-card p { font-size: 0.94rem; color: var(--muted); }
.cat-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; margin: 1rem 0; }
@media (max-width: 560px) { .cat-pair { grid-template-columns: 1fr; } }
.cat { background: var(--accent-soft); border-radius: 6px; padding: 1rem; }
.cat h3 { margin-top: 0; }
.cat p { font-size: 0.94rem; }
.provenance {
  border-left: 4px solid var(--accent); padding: 0.2rem 0 0.2rem 1rem;
  margin: 1.6rem 0; color: var(--muted); font-size: 0.97rem;
}

/* ---------- home / hero ---------- */
body.home { overflow: hidden; }
body.home .site-head, body.home .site-foot { display: none; }
body.home main { max-width: none; padding: 0; }

#hero { position: fixed; inset: 0; }
#cad { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; touch-action: none; }

.hero-card {
  position: absolute; top: 14vh; left: 50%; transform: translateX(-50%);
  text-align: center; pointer-events: none; user-select: none; width: min(92vw, 40rem);
}
.hero-card h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); }
.hero-card .sub { color: var(--muted); font-size: 1.05rem; margin-top: 0.3rem; }
.hero-card nav { margin-top: 1.1rem; pointer-events: auto; display: flex; gap: 1.2rem; justify-content: center; flex-wrap: wrap; }
.hero-card nav a {
  color: var(--accent); text-decoration: none; border: 1.5px solid var(--accent);
  padding: 0.25rem 0.8rem; border-radius: 999px; font-size: 0.98rem; background: var(--bg);
}
.hero-card nav a:hover { background: var(--accent); color: var(--bg); }
#toolbar {
  position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 0.4rem; z-index: 2;
}
.toolbtn {
  width: 38px; height: 38px; padding: 8px; border-radius: 6px; cursor: pointer;
  color: var(--muted); background: color-mix(in srgb, var(--bg) 82%, transparent);
  border: 1px solid var(--rule); backdrop-filter: blur(2px);
}
.toolbtn svg { width: 100%; height: 100%; display: block; }
.toolbtn:hover { color: var(--accent); border-color: var(--accent); }
.toolbtn.active { color: var(--bg); background: var(--accent); border-color: var(--accent); }

#fnbar {
  position: absolute; top: 0.7rem; right: 0.9rem; z-index: 2;
  display: flex; flex-direction: column; gap: 0.35rem; align-items: flex-end;
  font-family: ui-monospace, Consolas, "Cascadia Mono", monospace;
}
.fnrow { display: flex; gap: 0.35rem; }
.chip {
  font: inherit; font-size: 0.72rem; letter-spacing: 0.04em; cursor: pointer;
  color: var(--muted); background: color-mix(in srgb, var(--bg) 82%, transparent);
  border: 1px solid var(--rule); border-radius: 4px; padding: 0.2rem 0.5rem;
  backdrop-filter: blur(2px);
}
.chip:hover { color: var(--accent); border-color: var(--accent); }
.chip.tog.on { color: var(--bg); background: var(--accent); border-color: var(--accent); }
.fnhint { color: var(--muted); font-size: 0.72rem; user-select: none; padding-right: 0.1rem; }

@media (max-width: 640px) {
  #toolbar { left: 0.4rem; }
  .toolbtn { width: 34px; height: 34px; }
  #fnbar .fnrow:nth-child(2), #fnbar .fnrow:nth-child(3) { display: none; }  /* toggles only on small screens */
}

#cmdbar {
  position: absolute; left: 0; right: 0; bottom: 0;
  font-family: ui-monospace, Consolas, "Cascadia Mono", monospace; font-size: 0.92rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-top: 1px solid var(--rule); backdrop-filter: blur(2px);
}
#cmdgrip {
  height: 8px; cursor: ns-resize; touch-action: none;
  display: flex; align-items: center; justify-content: center;
}
#cmdgrip::before {
  content: ""; width: 44px; height: 3px; border-radius: 2px;
  background: var(--rule); transition: background 0.15s;
}
#cmdgrip:hover::before, #cmdgrip.dragging::before { background: var(--accent); }
#cmdlog {
  padding: 0 0.9rem; color: var(--muted);
  height: var(--cmdlog-h, 1.35rem); overflow-y: auto; overscroll-behavior: contain;
}
#cmdlog div { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.35; }
#cmdrow { display: flex; align-items: center; padding: 0.15rem 0.9rem 0.45rem; gap: 0.5rem; }
#cmdrow label { color: var(--accent); font-weight: 600; }
#cmd {
  flex: 1; font: inherit; color: var(--ink); background: transparent;
  border: none; outline: none; caret-color: var(--accent);
}

noscript .hero-fallback { display: block; padding: 4rem 1.5rem; max-width: 42rem; margin: 0 auto; }