/* ============================================================
   Vision Implementers — design tokens
   Palette: paper / ink / signal (blue-green) / amber / slate
   Type: Space Grotesk (display), Source Serif 4 (body),
         IBM Plex Mono (data / utility)
   ============================================================ */

:root {
  --paper: #F7F5F0;
  --paper-dim: #EFEBE2;
  --ink: #1A1D1A;
  --ink-soft: #383D38;
  --signal: #1E4D45;
  --signal-bright: #2C7466;
  --amber: #C8862E;
  --slate: #5C6660;
  --rule: #D8D3C6;

  --display: "Space Grotesk", "Arial Narrow", sans-serif;
  --body: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;

  --max-w: 880px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
a:hover { color: var(--signal-bright); }
a.quiet { border-bottom: none; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

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

/* ---------- Skip link / focus ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.brand-row {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.6rem 1.25rem 1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
}
.brand .mark { color: var(--signal); }

.brand-tag {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--slate);
}

nav.primary {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}
nav.primary ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
nav.primary li { margin: 0; }
nav.primary a {
  display: block;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: none;
  padding: 0.85rem 0.9rem;
  border-bottom: 2px solid transparent;
}
nav.primary a:hover { color: var(--signal); }
nav.primary a[aria-current="page"] {
  color: var(--signal);
  border-bottom-color: var(--signal);
  font-weight: 600;
}

/* ---------- Layout shell ---------- */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.6rem 1.25rem 4rem;
}

.lede {
  font-family: var(--display);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 600;
  margin: 0.3rem 0 1.4rem;
  max-width: 32ch;
}

.standfirst {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--amber);
  letter-spacing: 0.01em;
  margin: 0 0 1.8rem;
}

.prose p { margin: 0 0 1.15rem; max-width: 64ch; }
.prose { margin-bottom: 2rem; }

hr.div {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.6rem 0;
}

/* ---------- Home hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 2.2rem;
  align-items: start;
}
.hero img {
  width: 100%;
  border: 1px solid var(--rule);
  filter: grayscale(15%);
}
@media (max-width: 600px) {
  .hero { grid-template-columns: 1fr; }
  .hero img { max-width: 160px; }
}

.fact-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--slate);
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
}
.fact-strip span { white-space: nowrap; }
.fact-strip strong { color: var(--ink); }

/* ---------- Bio layout (President) ---------- */
.bio {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 2.2rem;
}
.bio img {
  width: 100%;
  border: 1px solid var(--rule);
}
.bio-card {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--slate);
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
  line-height: 1.5;
}
@media (max-width: 600px) {
  .bio { grid-template-columns: 1fr; }
  .bio img { max-width: 160px; }
}

/* ---------- Solutions sections ---------- */
.section-nav {
  display: flex;
  gap: 1.4rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  margin-bottom: 2.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}

.offer-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
}
.offer-list li {
  position: relative;
  padding-left: 1.3rem;
  margin-bottom: 1.1rem;
  max-width: 64ch;
}
.offer-list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--amber);
  font-family: var(--mono);
  font-weight: 700;
}
.offer-list .meta {
  display: block;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--slate);
  margin-top: 0.3rem;
}

/* ---------- News: instrument log timeline ---------- */
.log {
  border-top: 1px solid var(--rule);
}
.log-entry {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 1.4rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--rule);
}
.log-year {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--signal);
  font-weight: 600;
  position: relative;
}
.log-year::before {
  content: "";
  position: absolute;
  left: -1.4rem;
  top: 0.45rem;
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: 50%;
}
.log-entry h3 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}
.log-entry p { margin: 0 0 0.6rem; max-width: 62ch; }
.log-entry a.ext::after {
  content: " ↗";
  font-size: 0.8em;
}
@media (max-width: 560px) {
  .log-entry { grid-template-columns: 1fr; gap: 0.4rem; }
  .log-year::before { display: none; }
}

/* ---------- Presentations ---------- */
.talks-year {
  font-family: var(--mono);
  color: var(--signal);
  font-size: 0.85rem;
  margin: 1.8rem 0 0.6rem;
  letter-spacing: 0.04em;
}
.talks-list {
  list-style: none;
  margin: 0 0 0.4rem;
  padding: 0;
}
.talks-list li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
}
.talks-list .dl {
  font-family: var(--mono);
  font-size: 0.76rem;
  margin-left: 0.6rem;
  color: var(--slate);
}

/* ---------- Contact ---------- */
.contact-card {
  font-family: var(--mono);
  font-size: 0.95rem;
  line-height: 1.8;
  background: var(--paper-dim);
  border: 1px solid var(--rule);
  padding: 1.6rem 1.8rem;
  margin-bottom: 2rem;
  max-width: 46ch;
}
.contact-card .label {
  color: var(--slate);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.1rem;
}
.contact-card .row { margin-bottom: 1.1rem; }
.contact-card .row:last-child { margin-bottom: 0; }
.btn-mail {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--signal);
  color: var(--paper) !important;
  border: none;
  padding: 0.7rem 1.3rem;
  margin-top: 0.4rem;
}
.btn-mail:hover { background: var(--signal-bright); }

/* ---------- Footer ---------- */
footer.site-footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.6rem 1.25rem 3rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--slate);
  border-top: 1px solid var(--rule);
}
footer.site-footer a { color: var(--slate); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}