/* =========================================================
   Byte Communications — shared styles
   Direction A: warm paper / deep navy / amber
   Type: Fraunces (display) · Inter (body) · IBM Plex Mono (stamp)
   ========================================================= */

:root {
  /* palette */
  --paper:      #FAF8F3;
  --paper-alt:  #F3EFE6;
  --white:      #FFFFFF;
  --navy:       #0F2444;
  --navy-2:     #1C3A63;
  --amber:      #C77B1A;
  --amber-dark: #A8650F;
  --muted:      #5A6473;
  --muted-soft: #7A828F;
  --line:       #E5DECF;
  --line-navy:  #2A3F61;
  --paper-on-navy: #EDEAE2;

  /* type */
  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body:    "Inter", system-ui, -apple-system, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* layout */
  --maxw: 1080px;
  --radius: 10px;
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--navy);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--navy-2); text-decoration: none; }
a:hover { color: var(--amber-dark); }

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

/* ---------- layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.section { padding: 92px 0; }
.section--tight { padding: 72px 0; }
.section--alt  { background: var(--paper-alt); }
.section--navy {
  background: var(--navy);
  color: var(--paper-on-navy);
}

/* ---------- typography ---------- */
h1, h2, h3 {
  font-family: var(--display);
  font-weight: 500;
  color: var(--navy);
  letter-spacing: -0.01em;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 5.2vw, 3.65rem);
  line-height: 1.12;
}
h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.35rem);
  line-height: 1.18;
}
h3 {
  font-size: 1.2rem;
  line-height: 1.35;
}

.section--navy h1,
.section--navy h2,
.section--navy h3 { color: var(--white); }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.lede {
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: 52ch;
}
.section--navy .lede { color: var(--paper-on-navy); }

/* eyebrow — the "stamp" motif */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber-dark);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--amber);
  display: inline-block;
}
.section--navy .eyebrow { color: var(--amber); }

/* ---------- buttons ---------- */
.btn {
  font-family: var(--body);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--amber); color: #fff; }
.btn--primary:hover { background: var(--amber-dark); color: #fff; }

.btn--ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--navy); color: var(--navy); }

.section--navy .btn--ghost {
  color: var(--paper-on-navy);
  border-color: var(--line-navy);
}
.section--navy .btn--ghost:hover { border-color: var(--paper-on-navy); color: #fff; }

/* arrow link */
.arrow-link {
  font-family: var(--body);
  font-weight: 500;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--navy-2);
}
.arrow-link svg { transition: transform .18s ease; }
.arrow-link:hover svg { transform: translateX(3px); }
.section--navy .arrow-link { color: var(--amber); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 248, 243, 0.88);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.18rem;
  letter-spacing: -0.005em;
  color: var(--navy);
}
.brand:hover { color: var(--navy); }
.brand span { color: var(--amber); }

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav a {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--navy);
  position: relative;
  padding: 4px 0;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--navy); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }

/* ---------- hero ---------- */
.hero { padding: 104px 0 88px; }
.hero h1 { max-width: 16ch; }
.hero .lede { margin-top: 22px; }
.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

/* ---------- capabilities ---------- */
.cap-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.cap {
  background: var(--paper);
  padding: 30px 26px;
}
.section--alt .cap { background: var(--paper-alt); }
.cap-icon {
  width: 30px; height: 30px;
  color: var(--amber-dark);
  margin-bottom: 16px;
}
.cap h3 { margin-bottom: 8px; }
.cap p { font-size: 0.97rem; color: var(--muted); margin: 0; }

/* ---------- work / project cards ---------- */
.work-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}
.project {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  transition: border-color .18s ease, transform .18s ease;
}
.project:hover { border-color: var(--amber); transform: translateY(-3px); }
.tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-2);
  margin-bottom: 14px;
}
.project h3 { margin-bottom: 9px; }
.project p {
  font-size: 0.97rem;
  color: var(--muted);
  flex: 1;
  margin-bottom: 18px;
}

/* group heading on Work page */
.work-group + .work-group { margin-top: 60px; }
.work-group h2 { font-size: 1.5rem; }

/* ---------- heritage strip (navy) ---------- */
.heritage .lede { margin-top: 20px; max-width: 60ch; }
.heritage .arrow-link { margin-top: 26px; }

/* ---------- closing / cta ---------- */
.closing { text-align: center; }
.closing h2 { max-width: 18ch; margin: 0 auto; }
.closing .lede { margin: 18px auto 30px; text-align: center; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--navy);
  color: var(--paper-on-navy);
  border-top: 3px solid var(--amber);
  padding: 56px 0 30px;
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 28px;
  align-items: flex-start;
}
.footer-brand { max-width: 30ch; }
.footer-brand .brand { color: #fff; }
.footer-brand .brand span { color: var(--amber); }
.footer-tagline {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--paper-on-navy);
  opacity: 0.85;
}
.footer-nav {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}
.footer-nav a { color: var(--paper-on-navy); font-size: 0.93rem; font-weight: 500; }
.footer-nav a:hover { color: var(--amber); }

.footer-meta {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--line-navy);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--muted-soft);
}

/* ---------- motion on load ---------- */
.rise {
  opacity: 0;
  transform: translateY(14px);
  animation: rise .7s cubic-bezier(.2,.7,.3,1) forwards;
}
.rise.d1 { animation-delay: .06s; }
.rise.d2 { animation-delay: .14s; }
.rise.d3 { animation-delay: .22s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 620px) {
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 60px; }
  .nav { gap: 20px; }
  .nav a { font-size: 0.88rem; }
  .footer-top { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .rise { opacity: 1; transform: none; }
}