/* Latchkey Software — latchkeysoftware.com
   Single-theme dark: the identity is the design. Every colour painted explicitly. */

:root {
  --charcoal:      #1E1C18;
  --charcoal-up:   #26241E;
  --charcoal-up2:  #2D2A23;
  --hairline:      #38342B;
  --cream:         #F2EFE9;
  --cream-soft:    #CFC9BE;
  --taupe:         #8A8175;
  --amber:         #C8862F;
  --amber-light:   #DDA254;

  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --measure: 68ch;
  --gutter: clamp(20px, 5vw, 48px);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--charcoal);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--amber); color: var(--charcoal);
  padding: 10px 16px; font-family: var(--mono); font-size: 0.85rem; z-index: 100;
}
.skip:focus { left: 0; }

/* ---------- shell ---------- */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 760px; }

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--hairline);
  background: var(--charcoal);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding-top: 20px; padding-bottom: 20px; flex-wrap: wrap;
}
.lockup { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.lockup:hover { color: inherit; }
.lockup svg { flex-shrink: 0; display: block; }
.lockup-text { display: flex; flex-direction: column; gap: 2px; line-height: 1; }
.lockup-name {
  font-family: var(--mono); font-weight: 500; font-size: 1.15rem;
  color: var(--cream); letter-spacing: -0.01em;
}
.lockup-sub {
  font-family: var(--mono); font-weight: 400; font-size: 0.55rem;
  letter-spacing: 0.34em; text-transform: uppercase; color: var(--taupe);
}
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  font-family: var(--mono); font-size: 0.85rem; color: var(--cream-soft);
  text-decoration: none; padding: 4px 0; border-bottom: 1px solid transparent;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  color: var(--amber-light); border-bottom-color: var(--amber);
}

/* ---------- sections ---------- */
section { padding: clamp(56px, 9vw, 104px) 0; }
section.raised { background: var(--charcoal-up); }
section + section { border-top: 1px solid var(--hairline); }

.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber-light);
  margin: 0 0 18px;
}
.eyebrow::before { content: "> "; color: var(--amber); }

h1 {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(2rem, 5.2vw, 3.1rem); line-height: 1.1; letter-spacing: -0.03em;
  margin: 0 0 20px; text-wrap: balance; color: var(--cream);
}
h2 {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 1.85rem); line-height: 1.18; letter-spacing: -0.025em;
  margin: 0 0 18px; text-wrap: balance; color: var(--cream);
}
h3 {
  font-family: var(--mono); font-weight: 500; font-size: 1.05rem;
  letter-spacing: -0.01em; margin: 0 0 10px; color: var(--cream);
}
p { margin: 0 0 18px; max-width: var(--measure); }
p:last-child { margin-bottom: 0; }
.lede { font-size: 1.16rem; color: var(--cream-soft); max-width: 60ch; }

ul, ol { max-width: var(--measure); padding-left: 1.3em; }
li { margin-bottom: 8px; }
li::marker { color: var(--amber); }

/* ---------- button ---------- */
.btn {
  display: inline-block; font-family: var(--mono); font-size: 0.9rem; font-weight: 500;
  color: var(--amber-light); background: transparent;
  border: 1px solid var(--amber); border-radius: 3px;
  padding: 11px 22px; text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.btn:hover { background: var(--amber); color: var(--charcoal); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 28px; }

/* ---------- grids ---------- */
.cols {
  display: grid; gap: clamp(28px, 4vw, 48px);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin-top: 44px;
}
.cols p { max-width: 42ch; margin-bottom: 0; }

.features {
  display: grid; gap: clamp(24px, 3vw, 36px);
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
  margin-top: 48px;
}
.feature h3 { margin-bottom: 8px; }
.feature p { max-width: 44ch; margin-bottom: 0; color: var(--cream-soft); }

/* ---------- product card ---------- */
.card {
  background: var(--charcoal-up2); border: 1px solid var(--hairline);
  border-left: 3px solid var(--amber); border-radius: 5px;
  padding: clamp(28px, 4vw, 44px); max-width: 760px;
}
.badge {
  display: inline-block; font-family: var(--mono); font-size: 0.7rem;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber-light);
  border: 1px solid var(--amber); border-radius: 999px;
  padding: 4px 12px; margin-bottom: 18px;
}

/* ---------- legal pages ---------- */
.legal-meta {
  font-family: var(--mono); font-size: 0.82rem; color: var(--taupe);
  margin: 0 0 8px;
}
.legal h2 {
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  margin-top: 52px; padding-top: 32px; border-top: 1px solid var(--hairline);
}
.legal h2:first-of-type { margin-top: 40px; }
.legal h3 { margin-top: 28px; font-size: 1rem; }
.legal .num { color: var(--amber); margin-right: 12px; font-weight: 500; }

table { width: 100%; border-collapse: collapse; font-size: 0.94rem; min-width: 460px; }
.table-wrap { overflow-x: auto; margin: 24px 0; }
th, td {
  text-align: left; padding: 12px 18px 12px 0;
  border-bottom: 1px solid var(--hairline); vertical-align: top;
}
th {
  font-family: var(--mono); font-weight: 500; color: var(--taupe);
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
}

.note {
  background: var(--charcoal-up2); border: 1px solid var(--hairline);
  border-radius: 4px; padding: 20px 22px; margin: 28px 0; max-width: var(--measure);
}
.note p { margin-bottom: 0; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 48px 0 64px; background: var(--charcoal);
}
.site-footer .wrap {
  display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--mono); font-size: 0.82rem;
  color: var(--cream-soft); text-decoration: none;
}
.footer-links a:hover { color: var(--amber-light); }
.colophon { font-size: 0.82rem; color: var(--taupe); margin: 14px 0 0; max-width: 46ch; }

@media (max-width: 620px) {
  .site-header .wrap { gap: 14px; }
  .site-nav { gap: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}