/* PQCAT.io — Product Landing Page
   Design: Quantum-classified terminal aesthetic
   Palette: Jade/emerald on near-black, silver accents, amber CTAs
   NOT blue/purple AI slop. */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Design Tokens ── */
:root {
  --bg-primary: #06090f;
  --bg-secondary: #0c1018;
  --bg-card: #111620;
  --bg-card-hover: #161d2a;
  --bg-glass: rgba(0, 212, 170, 0.03);
  --border: rgba(0, 212, 170, 0.12);
  --border-bright: rgba(0, 212, 170, 0.25);
  --accent: #00d4aa;
  --accent-dim: #009e7e;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --amber: #f0b232;
  --amber-dim: #c4912a;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-dim: #5a6370;
  --red: #f85149;
  --green: #3fb950;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --radius-lg: 14px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Ambient Background ── */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 800px 600px at 20% 10%, rgba(0,212,170,0.04), transparent),
    radial-gradient(ellipse 600px 400px at 80% 80%, rgba(0,150,120,0.03), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ── Grid Pattern Overlay ── */
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0,212,170,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,170,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

main, header, footer, section { position: relative; z-index: 1; }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }

/* ── Navigation ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 0 2rem;
  background: rgba(6,9,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}

.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-weight: 600; font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase;
}

.nav-brand .bracket { color: var(--text-dim); font-weight: 400; }
.nav-brand .dot { color: var(--amber); }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem; font-weight: 500;
  letter-spacing: 0.5px; text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--accent); }

.nav-cta {
  background: transparent !important;
  border: 1px solid var(--accent) !important;
  color: var(--accent) !important;
  padding: 8px 20px !important;
  border-radius: 6px;
  font-family: var(--font-mono) !important;
  font-size: 0.8rem !important;
  transition: all var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent) !important;
  color: var(--bg-primary) !important;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 120px 2rem 80px;
  position: relative;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,212,170,0.06);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 18px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 2rem;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,212,170,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(0,212,170,0); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1.5px;
}

.hero h1 .accent { color: var(--accent); }
.hero h1 .thin { font-weight: 300; color: var(--text-secondary); }

.hero-sub {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-sub strong { color: var(--text-primary); font-weight: 600; }

/* ── Install Block ── */
.install-block {
  display: flex; flex-direction: column; gap: 12px;
  width: 100%; max-width: 560px;
  margin-bottom: 3rem;
}

.install-row {
  display: flex; align-items: center; gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.install-row:hover { border-color: var(--border-bright); }

.install-label {
  background: rgba(0,212,170,0.08);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 1px; text-transform: uppercase;
  white-space: nowrap;
  border-right: 1px solid var(--border);
  min-width: 90px; text-align: center;
}

.install-cmd {
  flex: 1;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow-x: auto;
}

.install-copy {
  background: none; border: none;
  color: var(--text-dim);
  padding: 12px 16px;
  cursor: pointer;
  transition: color var(--transition);
  font-size: 1rem;
}
.install-copy:hover { color: var(--accent); }
.install-copy.copied { color: var(--green); }

/* ── Buttons ── */
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}
.btn-primary:hover {
  background: #00e8bb;
  color: var(--bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,212,170,0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-bright);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── Section Layout ── */
.section { padding: 100px 2rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.2rem; font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.5px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

/* ── Feature Grid ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,212,170,0.08);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 20px;
  color: var(--accent);
}

.feature-card h3 {
  font-size: 1.05rem; font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Editions Table ── */
.editions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 900px;
}

.edition-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
}

.edition-card.pro {
  border-color: var(--accent-dim);
}
.edition-card.pro::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent), var(--accent-dim));
}

.edition-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 8px;
}

.edition-title {
  font-size: 1.5rem; font-weight: 700;
  margin-bottom: 8px;
}

.edition-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.edition-features {
  list-style: none;
  display: flex; flex-direction: column; gap: 12px;
  margin-bottom: 32px;
}

.edition-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.edition-features li::before {
  content: '✓';
  color: var(--green);
  font-weight: 700;
  flex-shrink: 0;
}

.edition-price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.edition-price .dim { color: var(--text-dim); font-weight: 400; font-size: 0.85rem; }

/* ── Stats Row ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 80px auto 0;
  max-width: 900px;
}

.stat {
  background: var(--bg-card);
  padding: 32px 24px;
  text-align: center;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Compliance Banner ── */
.compliance {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 60px 2rem;
}

.compliance-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; gap: 60px;
}

.compliance-badges {
  display: flex; flex-wrap: wrap; gap: 16px;
}

.compliance-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  white-space: nowrap;
}

.compliance-text { flex: 1; }
.compliance-text h3 { margin-bottom: 8px; font-size: 1.1rem; }
.compliance-text p { color: var(--text-secondary); font-size: 0.9rem; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 2rem;
}

.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 40px;
}

.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.footer-legal {
  font-size: 0.8rem;
  color: var(--text-dim);
  max-width: 360px;
  line-height: 1.6;
}

.footer-links { display: flex; gap: 40px; }
.footer-col h4 {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 8px;
}
.footer-col a:hover { color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .editions-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .compliance-inner { flex-direction: column; gap: 24px; }
  .footer-inner { flex-direction: column; }
  .install-label { min-width: 70px; font-size: 0.65rem; }
  .install-cmd { font-size: 0.75rem; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .btn-group { flex-direction: column; align-items: stretch; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}