/* Graham Tech Group — palette drawn from the letterhead:
   denim blue, red badge, gold "stitch" accents, cream text. */
:root {
  --denim-dark: #1f3550;
  --denim: #2e4a6b;
  --denim-light: #3a5d85;
  --red: #b11a1a;
  --gold: #d4a843;
  --gold-light: #e8c66a;
  --cream: #f5f1e6;
  --ink: #16222f;
  --max-width: 980px;

  /* Smooth denim weave: fine light + dark diagonal twill threads over
     vertical warp and horizontal weft. Uses translucent black/white so it
     layers over any base blue. Pair with a base color + shading gradient. */
  --denim-weave:
    repeating-linear-gradient(63deg,
      rgba(255, 255, 255, 0.06) 0, rgba(255, 255, 255, 0.06) 1px,
      transparent 1px, transparent 4px),
    repeating-linear-gradient(63deg,
      rgba(0, 0, 0, 0.06) 0, rgba(0, 0, 0, 0.06) 1px,
      transparent 1px, transparent 4px),
    repeating-linear-gradient(0deg,
      rgba(0, 0, 0, 0.05) 0, rgba(0, 0, 0, 0.05) 1px,
      transparent 1px, transparent 3px),
    repeating-linear-gradient(90deg,
      rgba(255, 255, 255, 0.03) 0, rgba(255, 255, 255, 0.03) 1px,
      transparent 1px, transparent 3px);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
}

/* ---- Hero / banner ---- */
/* Denim texture, all in CSS: a fine diagonal twill weave (the dominant
   diagonal of denim) layered over vertical warp + horizontal weft threads,
   on a denim-blue base shaded corner to corner. */
.hero {
  background-color: #34567d;
  background-image: var(--denim-weave),
    linear-gradient(135deg, #3f618a 0%, #294364 100%);
  color: var(--cream);
  text-align: center;
  padding: 48px 24px;
}

.hero-frame {
  max-width: 640px;
  margin: 0 auto;
}
.hero .logo {
  max-width: 260px;
  width: 70%;
  height: auto;
  border-radius: 8px;
}
.hero .tagline {
  color: var(--gold-light);
  font-size: 1.25rem;
  margin-top: 16px;
  font-style: italic;
}
.hero .cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 28px;
}
.hero .cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 4px;
  border: 2px solid var(--gold);
  transition: background 0.2s, transform 0.1s;
}
.hero .cta:hover { background: #8f1414; transform: translateY(-1px); }

/* Secondary CTA: outlined, shows the email address. */
.hero .cta-alt {
  background: transparent;
  color: var(--cream);
}
.hero .cta-alt:hover { background: rgba(255, 255, 255, 0.10); transform: translateY(-1px); }

/* ---- Sections / services ---- */
main { max-width: var(--max-width); margin: 0 auto; padding: 56px 16px; }
.services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}
.card {
  background: #fff;
  border: 1px solid #e3ddcb;
  border-top: 4px solid var(--red);
  border-radius: 6px;
  padding: 28px;
  box-shadow: 0 2px 10px rgba(31,53,80,0.08);
}
.card h2 {
  color: var(--denim-dark);
  font-size: 1.35rem;
  margin-bottom: 16px;
  border-bottom: 2px dashed var(--gold);
  padding-bottom: 10px;
}
.card ul { list-style: none; }
.card li {
  position: relative;
  padding: 6px 0 6px 26px;
}
.card li::before {
  content: "";
  position: absolute;
  left: 4px; top: 14px;
  width: 9px; height: 9px;
  background: var(--gold);
  border: 1px solid var(--red);
  border-radius: 50%;
}

/* ---- Contact ---- */
.contact {
  background-color: var(--denim-dark);
  background-image: var(--denim-weave),
    linear-gradient(135deg, #243f5e 0%, #14233a 100%);
  color: var(--cream);
  text-align: center;
  padding: 48px 16px;
}
.contact h2 { color: var(--gold-light); margin-bottom: 12px; }
.contact a { color: var(--gold-light); }

/* ---- Footer ---- */
.site-footer {
  background: var(--ink);
  color: #9fb0c2;
  text-align: center;
  font-size: 0.85rem;
  padding: 20px 16px;
}