/* ============================================================
   Haggle Engineering — site styles
   Tokens live in :root. Fonts match haggle.com (Space Grotesk / Inter).
   ============================================================ */

:root {
  --paper: #fbfaf7;
  --ink: #201b5a;
  --ink-2: #4a4770;
  --ink-3: #7b7898;
  --brand: #201b5a;
  --brand-2: #3d36a6;   /* link hover */
  --tint: #e8e6f5;
  --gold: #a66c05;
  --line: #e0dfea;

  --display: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 66ch;
  --wide: 1080px;
  --gutter: clamp(20px, 4vw, 40px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: light; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;              /* 17px */
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-inline: var(--gutter);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--brand-2); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--brand); }

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

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5.5vw, 3.75rem); color: var(--brand); }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); margin-block: 2.5rem 1rem; }
h3 { font-size: 1.25rem; margin-block: 1.75rem 0.5rem; }

p, ul, ol, blockquote, pre { margin-block: 0 1.1em; }
ul, ol { padding-left: 1.25em; }
li + li { margin-top: 0.35em; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: #eeedf5;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

pre {
  background: var(--ink);
  color: #ece9f7;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.55;
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }

blockquote {
  border-left: 3px solid var(--tint);
  padding-left: 1rem;
  color: var(--ink-2);
}

hr { border: 0; border-top: 1px solid var(--line); margin-block: 2.5rem; }

.wrap { width: 100%; max-width: var(--wide); margin-inline: auto; }
.prose { max-width: var(--measure); }
.muted { color: var(--ink-3); }

/* ---------- Header ---------- */

.site-header {
  padding-block: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--ink); }
.brand .logo { height: 64px; width: auto; flex: none; }
.brand .sub { font-weight: 400; color: var(--ink-3); align-self: flex-end; padding-bottom: 0.7rem; }

.site-nav { display: flex; gap: 1.5rem; }
.site-nav a { color: var(--ink-2); text-decoration: none; font-size: 0.95rem; padding-block: 0.25rem; }
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom: 2px solid var(--brand);
}

main { flex: 1; padding-block: 2rem 4rem; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 1.5rem 2.5rem;
  color: var(--ink-3);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer a { color: var(--ink-2); }

/* ---------- Hero ---------- */

.hero { padding-block: clamp(2rem, 6vw, 5rem) clamp(2rem, 5vw, 4rem); }
.hero h1 { max-width: 14ch; }
.hero p {
  max-width: 44ch;
  font-size: 1.2rem;
  color: var(--ink-2);
  margin-top: 1.5rem;
}

/* ---------- Lots (blog list) ---------- */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.6rem;
}
.section-head h2 { margin: 0; }
.section-head a { font-size: 0.95rem; }

.lots { list-style: none; padding: 0; margin: 0; }

.lot {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.25rem 1.5rem;
  padding-block: 1.75rem;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.lot-no {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  line-height: 1.9;
  white-space: nowrap;
}
.lot-no small { display: block; font-weight: 400; font-size: 0.8rem; color: var(--ink-3); line-height: 1.4; }

.lot h3 { margin: 0 0 0.35rem; font-size: 1.4rem; }
.lot h3 a { color: var(--ink); text-decoration: none; }
.lot h3 a:hover { color: var(--brand); text-decoration: underline; }
.lot p { margin: 0; color: var(--ink-2); max-width: 60ch; }

@media (max-width: 560px) {
  .lot { grid-template-columns: 1fr; gap: 0.25rem; }
  .lot-no { line-height: 1.4; }
  .lot-no small { display: inline; margin-left: 0.6rem; }
}

/* ---------- Single post ---------- */

.post-head { margin-bottom: 2.5rem; }
.post-head .lot-no { margin-bottom: 0.75rem; }
.post-head h1 { color: var(--ink); font-size: clamp(2rem, 4.5vw, 3rem); }
.post-head .byline { color: var(--ink-3); margin-top: 0.85rem; }
.post-body h2 { font-size: 1.6rem; }
.post-body img { border-radius: 8px; }
.post-body figure { margin-block: 1.5rem; }
.post-body figcaption { color: var(--ink-3); font-size: 0.9rem; margin-top: 0.5rem; }
.post-foot { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }

/* ---------- Home: quiet second row ---------- */

.two-up {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  margin-top: 3.5rem;
}
.two-up h2 { margin-top: 0; font-size: 1.4rem; }
.two-up p { color: var(--ink-2); max-width: 46ch; }

/* ---------- What we do ---------- */

.systems { list-style: none; padding: 0; margin-block: 1.5rem 0; max-width: 780px; }
.systems li {
  display: grid;
  grid-template-columns: minmax(150px, 220px) 1fr;
  gap: 0.25rem 1.5rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--line);
}
.systems strong { font-family: var(--display); font-weight: 700; font-size: 1.05rem; }
.systems span { color: var(--ink-2); }
.systems .stack { display: block; color: var(--ink-3); font-size: 0.85rem; margin-top: 0.3rem; }
@media (max-width: 560px) { .systems li { grid-template-columns: 1fr; } }

.principles { max-width: var(--measure); }
.principles dt { font-family: var(--display); font-weight: 700; font-size: 1.15rem; margin-top: 1.5rem; }
.principles dd { color: var(--ink-2); margin-top: 0.3rem; }

/* ---------- Team ---------- */

.people {
  list-style: none;
  padding: 0;
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2.5rem 2rem;
}
.person { display: grid; grid-template-columns: 56px 1fr; gap: 1rem; align-items: start; }
.person .avatar {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--tint);
  color: var(--brand-2);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.2rem;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.person .avatar img { width: 100%; height: 100%; object-fit: cover; }
.person h3 { margin: 0; font-size: 1.15rem; }
.person .role { color: var(--ink-3); font-size: 0.92rem; margin: 0.15rem 0 0.5rem; }
.person p { margin: 0; color: var(--ink-2); font-size: 0.97rem; }
.person .links { margin-top: 0.5rem; font-size: 0.9rem; display: flex; gap: 0.9rem; }

/* ---------- Motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  a, .site-nav a { transition: color 120ms ease; }
}

/* ---------- Post extras ---------- */

.note {
  background: var(--tint);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  color: var(--ink-2);
  font-size: 0.97rem;
}

table { border-collapse: collapse; width: 100%; margin-block: 0 1.5rem; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.55rem 0.75rem 0.55rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--display); font-weight: 700; border-bottom-color: var(--ink); }
table.numeric td:nth-child(n+2), table.numeric th:nth-child(n+2) { white-space: nowrap; font-variant-numeric: tabular-nums; }
.post-body .table-wrap { overflow-x: auto; }

.page-title { color: var(--ink); font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
.page-title + p { font-size: 1.15rem; color: var(--ink-2); margin-top: 1rem; }