/* alexandergoldman.org
   One stylesheet, no dependencies, no web fonts. The site is opened from a QR
   code on a phone, often on a conference network, so it has to paint in one
   round trip. The visual identity is the grain map in the hero: an EBSD-style
   micrograph drawn as a 5 KB inline SVG, coloured from the palette below.

   Colour is defined twice, once for each scheme, so the dark scheme is a
   decision rather than an inversion. Every text colour clears 4.5:1 against
   its background in both. */

:root {
  color-scheme: light;
  --page: #f6f3ee;
  --card: #fdfbf7;
  --ink: #17191c;
  --ink-soft: #565b62;
  --rule: #d9d3c9;
  --rule-soft: #e8e3da;
  --accent: #8a3a22;
  --accent-ink: #ffffff;
  --accent-soft: #f1e4de;
  --focus: #1f5fb0;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --max: 68rem;
  --gutter: 1.25rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #131517;
    --card: #1a1d21;
    --ink: #ebe7e0;
    --ink-soft: #a6a29b;
    --rule: #33383e;
    --rule-soft: #24282d;
    --accent: #e8a78f;
    --accent-ink: #1c0f09;
    --accent-soft: #2a211d;
    --focus: #8fc0ff;
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 17px/1.6 var(--sans);
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

sub { line-height: 0; }

.skip {
  position: absolute; left: 0; top: 0; padding: 0.6rem 1rem;
  background: var(--accent); color: var(--accent-ink);
  transform: translateY(-120%);
}
.skip:focus { transform: none; z-index: 20; }

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

header.site { border-bottom: 1px solid var(--rule-soft); }

header.site .inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.35rem var(--gutter);
  display: flex;
  flex-wrap: wrap;
  gap: 0 1rem;
  align-items: center;
}

header.site .name {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
  min-height: 44px;
}
header.site .name svg { width: 22px; height: 22px; display: block; }

nav { display: flex; flex-wrap: wrap; gap: 0 0.3rem; margin-left: -0.5rem; }
nav a {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.4rem 0.5rem;
  border-radius: 4px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
nav a:hover { color: var(--accent); background: var(--accent-soft); }
nav a[aria-current="page"] { color: var(--ink); }
@media (max-width: 40rem) { nav a.more { display: none; } }
@media (min-width: 40rem) { header.site .inner { padding: 0.6rem var(--gutter); } nav { margin-left: 0; } }

/* ------------------------------------------------------------------ page */

main { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter) 3rem; }

h1, h2, h3 { font-family: var(--sans); text-wrap: balance; }

h1 {
  font-size: clamp(2.1rem, 1.4rem + 3vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  margin: 0.2rem 0 0.9rem;
}

h2 {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin: 0 0 1.2rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--ink);
}

h3 { font-size: 1.08rem; line-height: 1.3; letter-spacing: -0.01em; margin: 0 0 0.25rem; }

p { margin: 0 0 1rem; }
.lede { font-size: 1.15rem; line-height: 1.55; }
.meta { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); letter-spacing: 0.01em; }
.prose { max-width: 42rem; }

/* Sections: a mono label on the left, content on the right, from 52rem up. */

section.block { padding: 2.4rem 0; border-top: 1px solid var(--rule-soft); }
section.block > h2 { border-top: 0; padding-top: 0; }

@media (min-width: 52rem) {
  section.block {
    display: grid;
    grid-template-columns: 12rem minmax(0, 1fr);
    column-gap: 3rem;
    padding: 3.2rem 0;
  }
  section.block > h2 { grid-column: 1; margin: 0; }
  section.block > :not(h2) { grid-column: 2; }
}
section.block > h2::after {
  content: "";
  display: block;
  width: 2.5rem;
  height: 2px;
  background: var(--ink);
  margin-top: 0.7rem;
}

/* ------------------------------------------------------------------ items */

.item { padding: 1.2rem 0; border-top: 1px solid var(--rule-soft); }
.item:first-of-type { border-top: 0; padding-top: 0; }
.item p { margin-bottom: 0.5rem; max-width: 42rem; }
.item .meta { margin-bottom: 0.4rem; }
.item p:last-child, .item .tags:last-child { margin-bottom: 0; }

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 1rem;
  align-items: baseline;
  justify-content: space-between;
}
.row .when { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); white-space: nowrap; }

ul.plain { list-style: none; margin: 0; padding: 0; }
ul.bullets { margin: 0.4rem 0 0; padding-left: 1.2rem; max-width: 42rem; }
ul.bullets li { margin-bottom: 0.35rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.7rem; }
.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--card);
}

.pubs .item p { max-width: none; }
.pubs strong { font-weight: 650; }

/* ------------------------------------------------------------------ hero */

.hero { padding: 1.2rem 0 2.4rem; }

.hero .figure {
  margin: 0 calc(-1 * var(--gutter)) 1.4rem;
  height: 112px;
  overflow: hidden;
  border-bottom: 1px solid var(--rule-soft);
}
.specimen { display: block; width: 100%; height: 100%; }
@media (prefers-color-scheme: dark) { .specimen { opacity: 0.86; } }

.kicker { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-soft); letter-spacing: 0.02em; margin: 0; }

.statement {
  font-size: clamp(1.25rem, 1rem + 1.2vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -0.012em;
  font-weight: 500;
  max-width: 24em;
  margin: 0 0 1.3rem;
}

ul.proof { list-style: none; margin: 0 0 1.2rem; padding: 0; max-width: 34rem; }
ul.proof li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0.35rem;
  align-items: start;
  padding: 0.5rem 0;
  border-top: 1px solid var(--rule-soft);
  line-height: 1.45;
}
ul.proof li:last-child { border-bottom: 1px solid var(--rule-soft); }
ul.proof .n { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); padding-top: 0.3rem; }
ul.proof b { font-weight: 650; }

.fields { font-family: var(--mono); font-size: 0.76rem; line-height: 1.6; color: var(--ink-soft); max-width: 36rem; margin: 0.4rem 0 0.9rem; }

.ask { max-width: 30rem; margin-bottom: 1.1rem; }

.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.6rem 1.15rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  background: transparent;
}
.btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }

.links { display: flex; flex-wrap: wrap; gap: 0.1rem 0.2rem; margin: 0; padding: 0; list-style: none; }
.links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.3rem 0.45rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-radius: 4px;
}
.links a:hover { color: var(--accent); background: var(--accent-soft); }
.links a::after { content: "\2197"; margin-left: 0.3em; opacity: 0.6; }
.links a.local::after { content: none; }

@media (min-width: 52rem) {
  .hero {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 3rem;
    align-items: stretch;
    padding: 2.6rem 0 3rem;
  }
  .hero > * { grid-column: 1; }
  .hero .figure {
    grid-column: 2;
    grid-row: 1 / span 12;
    margin: 0;
    height: auto;
    min-height: 100%;
    border: 1px solid var(--rule);
    border-radius: 8px;
  }
}

/* --------------------------------------------------------------- services */

.services { display: grid; grid-template-columns: 1fr; gap: 0; }
.services .item { padding: 1.3rem 0; }
@media (min-width: 52rem) {
  .services { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 3rem; }
  .services .item:first-of-type, .services .item:nth-of-type(2) { border-top: 0; padding-top: 0; }
}
.services .item .n { font-family: var(--mono); font-size: 0.72rem; color: var(--accent); display: block; margin-bottom: 0.4rem; }

/* ---------------------------------------------------------------- contact */

.contact {
  margin-top: 1rem;
  padding: 2rem var(--gutter);
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--rule);
}
.contact h2 { border-top: 0; padding-top: 0; margin-bottom: 0.6rem; }
.contact .big {
  font-size: clamp(1.4rem, 1rem + 1.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 650;
  margin: 0 0 1rem;
  max-width: 20em;
}
.contact .mail { font-family: var(--mono); font-size: 1.05rem; word-break: break-all; }
.contact .cta { margin-top: 1.2rem; }

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

footer {
  border-top: 1px solid var(--rule-soft);
  padding: 1.4rem var(--gutter) 2.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--ink-soft);
  text-align: center;
}

@media print {
  header.site, footer, .cta, .links, .hero .figure, .skip { display: none; }
  body { font-size: 11pt; background: #fff; color: #000; }
  main { max-width: none; padding: 0; }
  section.block { display: block; }
  a { color: #000; text-decoration: none; }
}