/* Sena Engineering, one page. Palette and type register come from the
   ratified brand kit; AA floor: copper #c0713d is for rules and large
   accents only, small copper text uses --copper-ink. Two sanctioned
   derived tones, both sitting between kit ink and kit muted: --body
   #3a434d (editorial body ink, 9.3:1 on floor) and --copper-ink #9a5426
   (small copper text, 5.3:1 on floor). Do not "correct" them toward
   kit hexes. */

@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/assets/fonts/fraunces-v38-600-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Fraunces';
  font-style: italic;
  font-weight: 600;
  font-display: swap;
  src: url(/assets/fonts/fraunces-v38-600-italic-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url(/assets/fonts/space-grotesk-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/assets/fonts/jetbrains-mono-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink: #12161b;
  --body: #3a434d;
  --muted: #5c6672;
  --floor: #f4f6f8;
  --copper: #c0713d;
  --copper-ink: #9a5426;
  --hairline: rgba(18, 22, 27, 0.14);
  --serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --sans: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  border-top: 4px solid var(--ink);
  background: var(--floor);
  color: var(--body);
  font: 400 1.0625rem/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: rgba(192, 113, 61, 0.25); }

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

.wrap {
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: clamp(24px, 6vw, 64px);
}

/* Masthead */

.masthead { padding: 44px 0 36px; border-bottom: 1px solid var(--hairline); }

.mast-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.mast-home { display: block; }

.lockup { display: block; height: 56px; width: auto; }

.mast-nav { display: flex; gap: 30px; font: 500 0.72rem/1 var(--mono); letter-spacing: 0.22em; text-transform: uppercase; }

.mast-nav a {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 5px;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.mast-nav a:hover { color: var(--ink); }

.mast-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--copper); }

/* Hero */

.hero { padding: clamp(80px, 13vh, 150px) 0 clamp(80px, 12vh, 140px); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(48px, 8vw, 110px);
}

h1 {
  margin: 0 0 30px;
  font: 600 clamp(2.25rem, 0.5rem + 4.6vw, 3.9rem)/1.08 var(--serif);
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 21ch;
  text-wrap: balance;
}

.lede {
  margin: 0;
  max-width: 52ch;
  font-size: 1.125rem;
}

.hero-comb {
  width: clamp(150px, 20vw, 236px);
  height: auto;
}

/* Products */

.products { border-top: 1px solid var(--hairline); padding: 76px 0 100px; }

.label {
  margin: 0 0 42px;
  display: flex;
  align-items: center;
  gap: 16px;
  font: 500 0.72rem/1 var(--mono);
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--muted);
}

.label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--copper);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 20px;
}

.card {
  display: block;
  padding: 30px 32px 28px;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.18s ease;
}

.card:hover { border-color: var(--copper); }

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-arrow { color: var(--muted); transition: color 0.18s ease; margin-top: 2px; }

.card:hover .card-arrow { color: var(--copper-ink); }

.card h3 {
  margin: 0 0 10px;
  font: 500 1.375rem/1.2 var(--sans);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.card p { margin: 0 0 22px; font-size: 0.98rem; line-height: 1.65; }

.card-domain {
  font: 500 0.78rem/1 var(--mono);
  letter-spacing: 0.08em;
  color: var(--copper-ink);
}

.quiet {
  margin: 56px 0 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font: italic 600 1.0625rem/1.5 var(--serif);
  color: var(--muted);
}

.quiet svg { flex: none; }

/* Footer */

footer { border-top: 1px solid var(--hairline); padding: 36px 0 64px; }

.foot-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  font: 500 0.75rem/1.8 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.foot-line a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--copper);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
  transition: color 0.18s ease;
}

.foot-line a:hover { color: var(--copper-ink); }

.dot { color: var(--copper); }

/* Shared text link */

.tlink {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--copper);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
  transition: color 0.18s ease;
}

.tlink:hover { color: var(--copper-ink); }

/* Interior pages (about, contact) */

.page { padding: clamp(64px, 10vh, 110px) 0 clamp(80px, 12vh, 130px); }

.page-title {
  margin: 0 0 26px;
  font: 600 clamp(2rem, 0.5rem + 3.6vw, 3rem)/1.12 var(--serif);
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 24ch;
  text-wrap: balance;
}

.page-lede { margin: 0; max-width: 54ch; font-size: 1.125rem; }

.principles {
  margin: 64px 0 0;
  padding: 0;
  list-style: none;
  max-width: 62ch;
  display: grid;
  gap: 30px;
}

.principles li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  border-top: 1px solid var(--hairline);
  padding-top: 26px;
}

.principles .num {
  font: 500 0.72rem/2 var(--mono);
  letter-spacing: 0.3em;
  color: var(--copper-ink);
}

.principles h2 {
  margin: 0 0 8px;
  font: 500 1.125rem/1.3 var(--sans);
  letter-spacing: -0.005em;
  color: var(--ink);
}

.principles p { margin: 0; font-size: 1rem; }

.about-product { margin-top: 72px; border-top: 1px solid var(--hairline); padding-top: 36px; max-width: 62ch; }

.about-product p { margin: 0; }

.contact-email { margin: 44px 0 0; font-size: clamp(1.15rem, 0.6rem + 2.4vw, 1.7rem); overflow-wrap: anywhere; }

.contact-email .tlink { font-family: var(--mono); font-weight: 500; letter-spacing: 0.01em; }

.contact-note { margin: 28px 0 0; color: var(--muted); font-size: 0.98rem; max-width: 54ch; }

/* 404 */

.err { padding: clamp(100px, 22vh, 220px) 0; }

.err h1 { margin-bottom: 18px; }

/* Small screens */

@media (max-width: 760px) {
  .masthead { padding: 30px 0 24px; }
  .lockup { height: 42px; }
  .mast-nav { gap: 20px; letter-spacing: 0.16em; }
  .hero { padding: 64px 0 72px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-comb { width: 138px; margin-top: 8px; }
  .products { padding: 60px 0 76px; }
  .card { padding: 26px 24px 24px; }
  .quiet { margin-top: 44px; align-items: flex-start; }
  .quiet svg { margin-top: 3px; }
}

@media (max-width: 480px) {
  .foot-line { flex-direction: column; align-items: flex-start; gap: 12px; }
  .dot { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .card-arrow, .foot-line a, .mast-nav a, .tlink { transition: none; }
}