/* chadmccormack.me — shared styles. Follows the visitor's light/dark setting. */
:root {
  color-scheme: light;
  --bg: #f7f8f9;
  --card: #ffffff;
  --ink: #14181b;
  --muted: #56606a;
  --faint: #7a848d;
  --rule: #dde1e5;
  --rule-soft: #eceff1;
  --accent: #0f6e62;
  --accent-ink: #ffffff;
  --accent-soft: #e3f1ee;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e1214;
    --card: #151a1d;
    --ink: #e6eaec;
    --muted: #9aa5ad;
    --faint: #7c878f;
    --rule: #283036;
    --rule-soft: #1d2327;
    --accent: #5fcab4;
    --accent-ink: #0b1a17;
    --accent-soft: #13302b;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1214;
  --card: #151a1d;
  --ink: #e6eaec;
  --muted: #9aa5ad;
  --faint: #7c878f;
  --rule: #283036;
  --rule-soft: #1d2327;
  --accent: #5fcab4;
  --accent-ink: #0b1a17;
  --accent-soft: #13302b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
}
a { color: var(--accent); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--card); color: var(--ink);
        border: 1px solid var(--accent); padding: 8px 14px; border-radius: 4px; z-index: 10; }
.skip:focus { left: 12px; }
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; }
.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 24px; }

/* header */
.top { display: flex; justify-content: space-between; align-items: center; gap: 16px;
       padding-block: 22px; border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.top .me { font-weight: 600; color: var(--ink); text-decoration: none; }
.top nav { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }

/* hero */
.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: start;
        padding-block: 56px 48px; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; gap: 28px; padding-block: 36px 32px; } }
.hero h1 { font-size: clamp(34px, 5vw, 48px); line-height: 1.08; margin: 0 0 10px; letter-spacing: -0.02em; }
.hero .role { font-size: clamp(20px, 2.6vw, 25px); font-weight: 600; color: var(--accent); margin: 0 0 10px; line-height: 1.25; }
.hero .level { font-size: 18px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.avail { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; font-weight: 600;
         color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 5px 13px; margin: 6px 0 14px; }
.avail .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.hero .tags { font-size: 13.5px; color: var(--muted); letter-spacing: 0.02em; margin: 0 0 22px; }
@media (max-width: 600px) { .home .top .me { display: none; } }
.hero .pitch { font-size: 19px; line-height: 1.55; margin: 0 0 28px; max-width: 34ch; }
.btns { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 11px 20px; border-radius: 6px; font-size: 15.5px; font-weight: 600;
       text-decoration: none; border: 1.5px solid var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); }

.glance { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 22px 24px; }
.glance .lbl { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; letter-spacing: 0.1em;
               text-transform: uppercase; color: var(--faint); margin: 0 0 14px; }
.glance dl { margin: 0; display: grid; gap: 14px; }
.glance dt { font-size: 13px; color: var(--muted); margin: 0 0 2px; }
.glance dd { margin: 0; font-size: 16px; line-height: 1.45; }
.glance dd strong { font-weight: 600; }
.glance .co { display: flex; gap: 10px; flex-wrap: wrap; }
.glance .co span { font-weight: 600; font-size: 15px; }
.glance .co span + span::before { content: "·"; color: var(--faint); margin-right: 10px; font-weight: 400; }

/* sections */
.sec { padding-block: 44px; border-top: 1px solid var(--rule); }
.sec h2 { font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint);
          font-family: "IBM Plex Mono", monospace; font-weight: 500; margin: 0 0 22px; }

.work { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
@media (max-width: 860px) { .work { grid-template-columns: 1fr; } }
.item { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 24px 26px;
        display: flex; flex-direction: column; gap: 10px; }
.item.lead { grid-row: span 2; border-color: var(--accent); }
.item .kind { font-family: "IBM Plex Mono", monospace; font-size: 11.5px; letter-spacing: 0.08em;
              text-transform: uppercase; color: var(--accent); margin: 0; }
.item h3 { margin: 0; font-size: 21px; line-height: 1.25; }
.item.lead h3 { font-size: 25px; }
.item p { margin: 0; color: var(--muted); font-size: 16px; }
.item .more { margin-top: auto; padding-top: 6px; font-size: 15px; font-weight: 600; }
.item .more a { text-decoration: none; }
.item .more a:hover { text-decoration: underline; }

.also { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 32px; }
@media (max-width: 700px) { .also { grid-template-columns: 1fr; } }
.also li { padding: 10px 0; border-bottom: 1px solid var(--rule-soft); font-size: 16px; }
.also li span { color: var(--muted); }

.close p { font-size: 20px; line-height: 1.5; max-width: 42ch; margin: 0 0 22px; }
.foot { border-top: 1px solid var(--rule); padding-block: 26px 48px; font-size: 14px; color: var(--muted);
        display: flex; gap: 22px; flex-wrap: wrap; }
.foot a { color: var(--muted); }

/* case studies */
.case { max-width: 760px; }
.case .back { display: inline-block; margin: 28px 0 0; font-size: 15px; text-decoration: none; }
.case h1 { font-size: clamp(30px, 4.4vw, 42px); line-height: 1.12; margin: 18px 0 12px; letter-spacing: -0.02em; }
.case .dek { font-size: 19px; color: var(--muted); margin: 0 0 28px; line-height: 1.5; }
.summary { background: var(--card); border: 1px solid var(--rule); border-radius: 10px; padding: 6px 24px; margin: 0 0 36px; }
.summary div { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule-soft); }
.summary div:last-child { border-bottom: none; }
.summary dt { font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
              color: var(--faint); padding-top: 3px; margin: 0; }
.summary dd { margin: 0; font-size: 16.5px; }
@media (max-width: 560px) { .summary div { grid-template-columns: 1fr; gap: 4px; } }
.case h2.h { font-size: 22px; margin: 36px 0 12px; }
.case p, .case li { max-width: 66ch; }
.case ul { padding-left: 20px; }
.case li { margin-bottom: 8px; }
.case video { width: 100%; max-width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 10px; display: block; background: #010409; }
.case .vcap { font-size: 14.5px; color: var(--muted); margin: 10px 0 0; }
.note { font-size: 14.5px; color: var(--muted); border-left: 3px solid var(--rule); padding-left: 14px; }

@media print {
  .top nav, .btns, .skip { display: none; }
  body { background: #fff; color: #000; }
  .item, .glance, .summary { border-color: #999; }
}

/* availability dot: status green, pulsing, so the eye finds it first */
.avail .dot { position: relative; width: 10px; height: 10px; background: #16c65a;
  box-shadow: 0 0 7px rgba(22, 198, 90, .8); animation: availFade 2s ease-in-out infinite; }
.avail .dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: #16c65a;
  animation: availRing 2s ease-out infinite; }
@keyframes availFade { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }
@keyframes availRing { 0% { transform: scale(1); opacity: .85; } 75%, 100% { transform: scale(3.4); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .avail .dot, .avail .dot::after { animation: none; } }

/* ---- AI lab: a deliberately different world inside a clean page ---- */
body { overflow-x: clip; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
                   clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.teaser { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr auto; gap: 12px 28px; align-items: center;
  background: #0b1013; border: 1px solid #1d2a2e; border-radius: 10px; padding: 11px 18px;
  text-decoration: none; color: #cfe0d8; transition: border-color .2s; }
.teaser:hover, .teaser:focus-visible { border-color: #2fbf8a; }
.teaser pre { margin: 0; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13.5px; line-height: 1.65;
  white-space: pre-wrap; color: #cfe0d8; }
.teaser .p, .term .p { color: #5aa9ff; }
.teaser .dim, .term .dim { color: #7d918a; }
.teaser .bad, .term .bad { color: #ff7a72; font-weight: 500; }
.term .ok { color: #3fe0a8; font-weight: 500; }
.teaser .cta { font-size: 15px; font-weight: 600; color: #3fe0a8; white-space: nowrap; }
.teaser .cta small { display: block; font-weight: 400; color: #7d918a; font-size: 12.5px; margin-top: 2px; }
@media (max-width: 700px) { .teaser { grid-template-columns: 1fr; } .teaser .cta { white-space: normal; } }
.cursor { display: inline-block; width: .55em; height: 1.05em; background: #3fe0a8; vertical-align: -2px; margin-left: 2px;
  animation: blink 1.05s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

.lab { --lb: #0a0e10; --lp: #0f1518; --lt: #d6e2dd; --lm: #849690; --lg: #3fe0a8; --lbd: #1d2a2e;
  background: var(--lb); color: var(--lt); box-shadow: 0 0 0 100vmax var(--lb); clip-path: inset(0 -100vmax);
  padding-block: 58px 62px; border-top: 2px solid #1f6b52; }
.lab .eyebrow { font-family: "IBM Plex Mono", monospace; color: var(--lg); font-size: 13.5px; letter-spacing: .04em; margin: 0 0 12px; }
.lab h2 { font-size: clamp(25px, 3.4vw, 34px); line-height: 1.2; letter-spacing: -0.01em; color: #fff; margin: 0 0 12px;
  font-weight: 700; max-width: 26ch; text-wrap: balance; }
.lab .intro { color: var(--lm); font-size: 17.5px; max-width: 58ch; margin: 0 0 30px; }
.term { background: var(--lp); border: 1px solid var(--lbd); border-radius: 10px; overflow: hidden; margin: 0 0 12px; }
.term .bar { display: flex; gap: 7px; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--lbd); }
.term .bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a3438; }
.term .bar span { margin-left: 8px; font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--lm); }
.term pre { margin: 0; padding: 16px 20px; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13.5px;
  line-height: 1.7; white-space: pre-wrap; color: var(--lt); overflow-x: auto; }
.lab .cap { color: var(--lm); font-size: 15px; margin: 0 0 40px; max-width: 66ch; }
.lab a { color: var(--lg); }
.ps-wrap { overflow-x: auto; margin: 0 0 22px; }
.ps { width: 100%; border-collapse: collapse; font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13.5px; }
.ps th { text-align: left; color: var(--lm); font-weight: 500; font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase;
  padding: 8px 18px 9px 0; border-bottom: 1px solid var(--lbd); }
.ps td { padding: 12px 18px 12px 0; border-bottom: 1px solid var(--lbd); vertical-align: top; color: var(--lt); line-height: 1.5; }
.ps td:first-child { color: var(--lg); white-space: nowrap; }
.ps td:nth-child(2) { font-family: "IBM Plex Sans", system-ui, sans-serif; font-size: 15px; }
.ps .st { white-space: nowrap; color: var(--lm); }
.ps .st.run::before { content: "● "; color: var(--lg); }
.lab .foot2 { color: var(--lm); font-size: 15px; margin: 0; }

.teaser .tline { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 13.5px; color: #cfe0d8; line-height: 1.6; }
.teaser .ok { color: #3fe0a8; font-weight: 500; }

.teaser .ag { color: #7fc8ff; font-weight: 500; }
.feat { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 0 0 40px; }
@media (max-width: 860px) { .feat { grid-template-columns: 1fr; } }
.fcard { background: var(--lp); border: 1px solid var(--lbd); border-radius: 12px; padding: 22px 22px 18px;
  display: flex; flex-direction: column; gap: 10px; }
.fcard .ftag { font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--lm); margin: 0; letter-spacing: .03em; }
.fcard .ftag .st.run::before { content: "● "; color: var(--lg); }
.fcard .ftag .st { color: var(--lg); }
.fcard h3 { margin: 0; font-size: 21px; line-height: 1.25; color: #fff; }
.fcard p { margin: 0; color: var(--lm); font-size: 15.5px; line-height: 1.55; }
.fcard .term { margin: 4px 0 0; background: var(--lb); }
.fcard .term pre { font-size: 12.5px; padding: 12px 16px; }
.fcard .more { margin-top: auto; padding-top: 4px; font-size: 14.5px; font-weight: 600; }
.lab .also-h { font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--lm); font-weight: 500; margin: 0 0 6px; }
@media (min-width: 861px) { .teaser .tline { white-space: nowrap; } }

/* light / dark switch */
.theme-toggle { display: inline-grid; place-items: center; width: 34px; height: 34px; padding: 0; margin: 0;
  background: transparent; border: 1px solid var(--rule); border-radius: 999px; color: var(--muted); cursor: pointer; }
.theme-toggle:hover { color: var(--ink); border-color: var(--muted); }
.theme-toggle svg { width: 16px; height: 16px; display: block; }
.theme-toggle .sun { display: none; }
.theme-toggle.is-dark .sun { display: block; }
.theme-toggle.is-dark .moon { display: none; }
.work.solo { grid-template-columns: 1fr; }
.work.solo .item.lead { grid-row: auto; }
.work.solo .item p { max-width: 70ch; }