/* ---------- Base ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: #1f2937;
  line-height: 1.6;
  background: #fff;
}
img { display: block; max-width: 100%; height: auto; }
.container { width: min(1100px, 92%); margin: 0 auto; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: #ffffffea; backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid #e5e7eb;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: .75rem 0; }
.logo img { width: 160px; height: auto; }

.site-nav ul { display: flex; gap: 1rem; align-items: center; list-style: none; margin: 0; padding: 0; }
.site-nav a { text-decoration: none; color: #111827; font-weight: 600; }
.site-nav a:hover { text-decoration: underline; }
.nav-toggle { display: none; background: transparent; border: 1px solid #e5e7eb; border-radius: .5rem; padding: .4rem .7rem; }

.btn {
  display: inline-block; padding: .6rem 1rem; border-radius: .5rem;
  background: #0ea5e9; color: #fff; text-decoration: none; font-weight: 700;
}
.btn:hover { filter: brightness(.95); }
.btn-lg { padding: .9rem 1.25rem; font-size: 1.05rem; }

/* ---------- Sections ---------- */
.hero {
  background: radial-gradient(80% 80% at 50% 20%, #e0f2fe 0, #fff 60%);
  padding: 4rem 0 3rem;
}
.hero-inner { text-align: left; }
.hero h1 { font-size: clamp(1.8rem, 3vw + 1rem, 3rem); margin: 0 0 .5rem; }
.hero p { max-width: 55ch; margin: 0 0 1rem; color: #374151; }

.services { padding: 3rem 0 1rem; }
.services h2, .gallery h2, .service-areas h2, .cta h2 { font-size: clamp(1.4rem, 1.5vw + .8rem, 2rem); margin: 0 0 1rem; }
.cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 1rem 0 0;
}
.card { border: 1px solid #e5e7eb; border-radius: .75rem; padding: 1rem; background: #fff; }
.card h3 { margin: 0 0 .25rem; font-size: 1.05rem; }

.gallery { padding: 2rem 0; }
.gallery .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.gallery figure { margin: 0; border: 1px solid #e5e7eb; border-radius: .5rem; overflow: hidden; background: #fff; }
.gallery figcaption { padding: .6rem; font-size: .95rem; color: #374151; }

.service-areas { padding: 2rem 0; }
.service-areas p { margin: 0; color: #374151; }

.cta { background: #0ea5e9; color: #fff; padding: 2.5rem 0; text-align: center; }
.cta p { margin: .25rem 0 1rem; color: #eaf6ff; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid #e5e7eb; padding: 1rem 0; }
.footer-inner { display: flex; gap: 1rem; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.site-footer nav a { margin-right: .75rem; color: #374151; text-decoration: none; }
.site-footer nav a:hover { text-decoration: underline; }

/* ---------- Accessibility ---------- */
.skip-link {
  position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { left: 1rem; top: 1rem; width: auto; height: auto; background: #111827; color: #fff; padding: .5rem .75rem; border-radius: .5rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .gallery .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav-toggle { display: inline-block; }
  .site-nav ul { display: none; }
  .site-nav ul.open { display: flex; flex-direction: column; position: absolute; right: 4%; top: 62px; background: #fff; border: 1px solid #e5e7eb; border-radius: .75rem; padding: .5rem; width: min(280px, 92%); }
  .cards, .gallery .grid { grid-template-columns: 1fr; }
  .header-inner { padding: .6rem 0; }
}