/* ============================================================
   316Software
   Brand font: Archivo (SIL Open Font License 1.1), self-hosted.
   Single variable woff2 (weights 100–900), latin subset.
   ============================================================ */
@font-face {
  font-family: "Archivo";
  src: url("/fonts/archivo.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper:  #F4F1EA; /* warm drafting paper — background */
  --ink:    #16130F; /* warm near-black — primary text (16.4:1, AAA) */
  --muted:  #6E685E; /* metadata grey (4.9:1, AA) */
  --hair:   #D9D4C8; /* hairline rules */
  --accent: #C92A12; /* International vermilion (4.9:1, AA as text) */

  --pad: clamp(1.25rem, 3.5vw, 2.75rem);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI",
               Helvetica, Arial, sans-serif;
  font-feature-settings: "tnum" 1;        /* tabular numerals for 316 */
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---- page frame: three-row full-viewport grid (title block) ---- */
.page {
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(2rem, 6vh, 5rem);
  padding: var(--pad);
}

/* ---- hairline title-block metadata rows ---- */
.meta {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.meta--top    { border-bottom: 1px solid var(--hair); padding-bottom: clamp(1rem, 2.5vh, 1.5rem); }
.meta--bottom { border-top: 1px solid var(--hair);    padding-top:    clamp(1rem, 2.5vh, 1.5rem);
                align-items: baseline; }

/* ---- hero field, left-aligned to one datum axis ---- */
.hero { align-self: center; }

.logo {
  font-weight: 700;
  font-size: clamp(3.4rem, 14vw, 11rem);
  line-height: .9;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
  margin-bottom: clamp(1.5rem, 4vh, 2.75rem);
}
.logo .num  { color: var(--accent); }  /* signature: the numerals wear the accent */
.logo .word { color: var(--ink); }

.tagline {
  max-width: 42ch;
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--muted);
}

/* ---- email: hairline underline draws in on hover/focus ---- */
.contact {
  position: relative;
  font-size: .9rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 2px;
}
.contact::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.contact:hover, .contact:focus-visible { color: var(--ink); }
.contact:hover::after,
.contact:focus-visible::after { transform: scaleX(1); }

a:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
  border-radius: 2px;
}

/* ---- responsive: stack meta rows, never scroll horizontally ---- */
@media (max-width: 34rem) {
  .meta--top,
  .meta--bottom { flex-direction: column; gap: .6rem; align-items: flex-start; }
}

/* ---- accessibility: respect reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}