/* ericgabbard.com — "Instrument Panel"
   Charts are the visual language; every figure is drawn from a published number. */

:root {
  --bg:          #fcfcfa;
  --surface:     #ffffff;
  --fg:          #10191c;
  --muted:       #6a7276;
  --rule:        #e3e2db;
  --accent:      #14655a;
  --accent-soft: #e9f0ee;
  --clay:        #bfae9d;
  --on-accent:   #ffffff;

  --serif: "Newsreader", Georgia, "Iowan Old Style", serif;
  --sans:  "IBM Plex Sans", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --max: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:          #0e1315;
    --surface:     #141a1c;
    --fg:          #e4e8e7;
    --muted:       #8e9997;
    --rule:        #242c2e;
    --accent:      #5cbfad;
    --accent-soft: #16262a;
    --clay:        #8a7d70;
    --on-accent:   #0e1315;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

/* ---------- header ---------- */

header { padding: 2.5rem 0 0; }

nav {
  display: flex; flex-wrap: wrap;
  align-items: baseline; justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.85rem;
}

nav .home { font-weight: 600; letter-spacing: -0.01em; text-decoration: none; color: var(--fg); }

nav ul { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; font-size: 0.92rem; }

nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

/* ---------- type ---------- */

h1, h2 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.018em;
  line-height: 1.14;
  text-wrap: balance;
}

h1 { font-size: clamp(1.95rem, 5vw, 2.6rem); margin: 2rem 0 1rem; max-width: 20ch; }
h2 { font-size: 1.5rem; margin: 3.2rem 0 1rem; }

h3 { font-family: var(--sans); font-size: 1.02rem; font-weight: 600; margin: 2rem 0 0.5rem; }

p { margin: 0 0 1.15rem; }

a { color: var(--accent); text-underline-offset: 3px; }

.lede { font-size: 1.1rem; line-height: 1.55; color: var(--muted); max-width: 48ch; }
.muted { color: var(--muted); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.8rem;
}

section { margin: 0 0 3.5rem; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0; }

/* ---------- metric strip ---------- */

.strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 1.6rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 1.2rem 0;
  margin: 2.2rem 0 0;
}

.metric .k {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 0.45rem;
}
.metric .v {
  font-family: var(--serif); font-size: 1.7rem; line-height: 1;
  color: var(--accent); font-variant-numeric: tabular-nums;
}
.metric .u { font-family: var(--sans); font-size: 0.72rem; color: var(--muted); margin-left: 0.2rem; }
.metric svg { display: block; margin-top: 0.6rem; width: 100%; height: auto; }

/* ---------- charts ---------- */

.ch-mark { fill: var(--accent); }
.ch-alt  { fill: var(--clay); }
.ch-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.ch-area { fill: var(--accent); opacity: 0.1; }
.ch-lab  { fill: var(--muted); font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.06em; }
.ch-val  { fill: var(--fg); font-family: var(--mono); font-size: 9.5px; }
.ch-on   { fill: var(--on-accent); font-family: var(--sans); font-size: 9px; }
.ch-rule { stroke: var(--rule); stroke-width: 1; }

figure { margin: 2rem 0; }
figure svg { display: block; width: 100%; height: auto; }
figcaption {
  font-family: var(--mono); font-size: 0.72rem; color: var(--muted);
  border-top: 1px solid var(--rule); padding-top: 0.55rem; margin-top: 0.7rem;
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.2rem; justify-content: space-between;
}

/* ---------- work cards ---------- */

.cards { display: grid; gap: 1.4rem; }

.card {
  display: grid;
  grid-template-columns: 1fr 12rem;
  gap: 1.6rem;
  align-items: center;
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease;
}

.card:hover { border-color: var(--accent); }

.card h3 { font-family: var(--serif); font-weight: 500; font-size: 1.12rem; margin: 0 0 0.35rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.5; }
.card .chart svg { display: block; width: 100%; height: auto; }

@media (max-width: 34rem) {
  .card { grid-template-columns: 1fr; gap: 1.1rem; }
}

/* ---------- lists ---------- */

ul.plain { list-style: none; margin: 0; padding: 0; }
ul.plain > li { padding: 0.9rem 0; border-top: 1px solid var(--rule); }
ul.plain > li:last-child { border-bottom: 1px solid var(--rule); }

.build h3 { margin: 0 0 0.3rem; }
.build p { margin: 0 0 0.5rem; }

.stats { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; margin: 0; padding: 0; }
.stats li {
  font-family: var(--mono);
  font-size: 0.72rem; font-variant-numeric: tabular-nums;
  color: var(--accent); background: var(--accent-soft);
  border-radius: 3px; padding: 0.2rem 0.55rem;
}

/* ---------- case study ---------- */

.case dl { margin: 0 0 2rem; }
.case dt {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted); margin-top: 1rem;
}
.case dd { margin: 0.2rem 0 0; }

blockquote {
  margin: 2.2rem 0;
  padding: 0.2rem 0 0.2rem 1.2rem;
  border-left: 2px solid var(--accent);
  font-family: var(--serif); font-size: 1.12rem; font-style: italic;
  color: var(--muted);
}

.outcome {
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1.2rem 1.4rem;
  background: var(--accent-soft);
}
.outcome h3 { margin-top: 0; }
.outcome ul { margin: 0; padding-left: 1.1rem; }

.back { display: inline-block; margin: 2.5rem 0 0; font-size: 0.93rem; text-decoration: none; }

/* ---------- blueprint figures (AI page) ---------- */

.plate {
  background: #0e1826;
  background-image:
    linear-gradient(rgba(127,168,201,0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,168,201,0.09) 1px, transparent 1px);
  background-size: 22px 22px;
  border: 1px solid #23405c;
  border-radius: 8px;
  padding: 1.4rem 1.5rem 1.1rem;
  margin: 2.2rem 0;
  overflow-x: auto;
}

.plate svg { display: block; width: 100%; min-width: 30rem; height: auto; }

.plate figcaption {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.09em; text-transform: uppercase;
  color: #8fa4b8; border-top: 1px solid rgba(127,168,201,0.28);
  padding-top: 0.6rem; margin-top: 0.9rem;
}

.bp-box   { fill: none; stroke: #7fa8c9; stroke-width: 1; }
.bp-box-d { fill: none; stroke: #7fa8c9; stroke-width: 1; stroke-dasharray: 3 3; }
.bp-key   { fill: rgba(87,201,192,0.10); stroke: #57c9c0; stroke-width: 1.4; }
.bp-arrow { fill: none; stroke: #7fa8c9; stroke-width: 1; }
.bp-arrow-k { fill: none; stroke: #57c9c0; stroke-width: 1; }
.bp-head  { fill: #7fa8c9; }
.bp-head-k { fill: #57c9c0; }
.bp-t     { fill: #dfeaf4; font-family: var(--mono); font-size: 9.5px; }
.bp-t-k   { fill: #57c9c0; font-family: var(--mono); font-size: 10px; }
.bp-t-m   { fill: #8fa4b8; font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.08em; }

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

footer {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding: 2rem 0 4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

footer a { color: var(--muted); }
footer a:hover { color: var(--accent); }

.footlinks { display: flex; flex-wrap: wrap; gap: 1.25rem; list-style: none; margin: 0.5rem 0 0; padding: 0; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

.bp-box-w { fill: none; stroke: #d98c7a; stroke-width: 1; }
.bp-t-w   { fill: #d98c7a; font-family: var(--mono); font-size: 8.5px; }
.bp-arrow-w { fill: none; stroke: #d98c7a; stroke-width: 1; }
.bp-div   { stroke: rgba(127,168,201,0.35); stroke-width: 1; stroke-dasharray: 4 4; }

main > .eyebrow:first-child { margin-top: 2.2rem; }

/* ---------- wide screens: sticky identity rail + breakout figures ----------
   Prose keeps its ~65-character measure; charts and diagrams take the extra
   width instead of leaving it empty. Everything below 68rem is untouched. */

@media (min-width: 68rem) {

  .wrap {
    max-width: 82rem;
    display: grid;
    grid-template-columns: 12rem minmax(0, 40rem) minmax(0, 1fr);
    column-gap: 4rem;
    align-items: start;
    padding: 0 2.5rem;
  }

  header {
    grid-column: 1;
    grid-row: 1 / span 2;
    position: sticky;
    top: 3rem;
    padding: 3rem 0 0;
  }

  nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.1rem;
    border-bottom: 0;
    padding-bottom: 0;
  }

  nav .home { font-size: 1.05rem; }

  nav ul { flex-direction: column; gap: 0.45rem; font-size: 0.9rem; }

  main {
    grid-column: 2 / 4;
    display: grid;
    grid-template-columns: minmax(0, 40rem) minmax(0, 1fr);
    column-gap: 4rem;
    padding-top: 3rem;
  }

  main > * { grid-column: 1; }

  /* data breathes into the right margin */
  main > .strip,
  main > figure,
  main > .plate { grid-column: 1 / -1; }

  main > *:first-child { margin-top: 0; }

  footer {
    grid-column: 2;
    grid-row: 2;
  }

  .strip { grid-template-columns: repeat(4, 1fr); }

  .plate svg { min-width: 0; }
}

@media (min-width: 100rem) {
  .wrap { max-width: 92rem; grid-template-columns: 14rem minmax(0, 42rem) minmax(0, 1fr); }
  main { grid-template-columns: minmax(0, 42rem) minmax(0, 1fr); }
}

@media (min-width: 68rem) {
  /* sparklines are sparklines — don't let them stretch across the strip */
  .metric svg { max-width: 15rem; }

  /* the work cards use the full width as a three-up row */
  main > #work { grid-column: 1 / -1; }
  main > #work > :not(.cards) { max-width: 40rem; }

  .cards { grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 1.2rem; }
  .card { grid-template-columns: 1fr; align-content: start; gap: 1.1rem; }
  .card .chart { margin-top: auto; }
}