/* Summit Wave Software — teal-on-dark, matching the Regolith Audio identity. */
:root {
  --bg: #0a0e13;
  --bg-2: #0f151d;
  --surface: #131b25;
  --border: #22303e;
  --text: #e7eef5;
  --muted: #93a3b3;
  --teal: #2dd4bf;
  --cyan: #22d3ee;
  --glow: rgba(45, 212, 191, 0.35);
  --maxw: 960px;
}

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

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(1100px 600px at 50% -10%, rgba(34, 211, 238, 0.10), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--teal); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 19, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
  font-size: 1.02rem;
}
.brand:hover { color: var(--text); }
.mark {
  width: 26px; height: 26px; flex: none;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  box-shadow: 0 0 18px var(--glow);
}
.nav-links { display: flex; gap: 28px; font-size: 0.95rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover, .nav-links a.active { color: var(--text); }

/* Sections */
main { flex: 1; }
.hero { padding: 96px 0 72px; text-align: center; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  color: var(--teal);
  margin-bottom: 20px;
}
h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
}
h1 .accent {
  background: linear-gradient(120deg, var(--teal), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.22rem);
  max-width: 640px;
  margin: 22px auto 0;
}

.section { padding: 40px 0; }
.section h2 {
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.section p { color: var(--muted); max-width: 680px; }

/* Brand card */
.card {
  margin-top: 20px;
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px 32px;
  justify-content: space-between;
}
.card h3 { font-size: 1.35rem; color: var(--text); }
.card .card-body { max-width: 460px; }
.card p { margin-top: 8px; }

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  background: linear-gradient(120deg, var(--teal), var(--cyan));
  color: #06131a;
  box-shadow: 0 0 26px var(--glow);
  white-space: nowrap;
}
.btn:hover { color: #06131a; filter: brightness(1.06); }
.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
.btn.ghost:hover { border-color: var(--teal); color: var(--text); }

/* Contact page */
.contact-block { padding: 80px 0 56px; }
.contact-block .email {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  display: inline-block;
  margin-top: 8px;
}
.identity {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--text); }

@media (max-width: 560px) {
  .nav-links { gap: 18px; }
  .hero { padding: 64px 0 48px; }
  .card { flex-direction: column; align-items: flex-start; }
}