/* CounterAegis — umbrella brand for Countersig, ProvenanceAI, CounterAudit */

:root {
  --bg-0: #06090e;
  --bg-1: #0a0f1c;
  --surface: rgba(15, 23, 42, 0.75);
  --surface-border: rgba(148, 163, 184, 0.12);
  --text: #f8fafc;
  --muted: #94a3b8;
  --dim: #64748b;
  --accent: #06b6d4;
  --accent-soft: rgba(6, 182, 212, 0.12);
  --gold: #e8c468;
  --gold-soft: rgba(232, 196, 104, 0.12);
  --violet: #a78bfa;
  --violet-soft: rgba(167, 139, 250, 0.1);
  --max: 1140px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --display: "Space Grotesk", "Inter", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background: radial-gradient(ellipse 100% 70% at 50% -25%, rgba(6, 182, 212, 0.1), transparent 55%),
    radial-gradient(ellipse 60% 40% at 20% 60%, rgba(167, 139, 250, 0.06), transparent 50%),
    linear-gradient(168deg, var(--bg-0) 0%, var(--bg-1) 45%, #0c1322 100%);
  background-attachment: fixed;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: #67e8f9;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(148, 163, 184, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 75% 55% at 50% 15%, black 30%, transparent 72%);
}

.content {
  position: relative;
  z-index: 1;
}

header {
  border-bottom: 1px solid var(--surface-border);
  background: rgba(6, 9, 14, 0.82);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
}

.wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}
.wordmark span {
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  margin-left: 1.25rem;
}
nav a:hover {
  color: var(--text);
}

.hero {
  padding: clamp(3rem, 9vw, 5.5rem) 0 2.5rem;
  text-align: center;
}

.kicker {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin: 0 auto 1.25rem;
  max-width: 18ch;
}

.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38rem;
  margin: 0 auto 2rem;
}

.triad {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  padding: 2rem 0 3.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  padding: 1.5rem 1.35rem;
  text-align: left;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  border-color: rgba(6, 182, 212, 0.28);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.card-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
}

.card-tag.trust {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(6, 182, 212, 0.35);
}
.card-tag.data {
  background: var(--violet-soft);
  color: var(--violet);
  border: 1px solid rgba(167, 139, 250, 0.35);
}
.card-tag.gov {
  background: var(--gold-soft);
  color: var(--gold);
  border: 1px solid rgba(232, 196, 104, 0.35);
}

.card h2 {
  font-family: var(--display);
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0 0 1rem;
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.55;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.card-links a {
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--surface-border);
  color: var(--text);
}
.card-links a.primary {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(167, 139, 250, 0.12));
  border-color: rgba(6, 182, 212, 0.4);
}
.card-links a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.contact-band {
  padding: 3rem 0 4rem;
  border-top: 1px solid var(--surface-border);
  text-align: center;
}

.contact-band h2 {
  font-family: var(--display);
  font-size: 1.4rem;
  margin: 0 0 0.75rem;
}

.contact-band p {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

.contact-band a.mail {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
}

footer {
  padding: 2rem 0;
  border-top: 1px solid var(--surface-border);
  color: var(--dim);
  font-size: 0.8125rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}