/* ============================================================
   nav.css — Shared navigation + global cosmic styles
   Book of Life / threadengine.ai
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
  background: #0a0e14;
  color: #e8e0d0;
  font-family: 'Cormorant Garamond', Georgia, serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Cosmic Star Background (fixed, shared) ---- */
.stars-fixed {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
}

.stars-fixed::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 70% 80%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 45% 45%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 25% 35%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 3% 45%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 17% 8%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 37% 92%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 53% 38%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 67% 15%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 83% 52%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 97% 72%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 7% 68%, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 43% 78%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 88% 88%, rgba(255,255,255,0.4), transparent);
}

.stars-fixed::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(2px 2px at 5% 15%, rgba(198,151,91,0.7), transparent),
    radial-gradient(1.5px 1.5px at 18% 72%, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 35% 8%, rgba(198,151,91,0.6), transparent),
    radial-gradient(1.5px 1.5px at 42% 88%, rgba(255,255,255,0.5), transparent),
    radial-gradient(2px 2px at 58% 32%, rgba(198,151,91,0.5), transparent),
    radial-gradient(1.5px 1.5px at 72% 55%, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 85% 22%, rgba(198,151,91,0.6), transparent),
    radial-gradient(1.5px 1.5px at 92% 78%, rgba(255,255,255,0.5), transparent),
    radial-gradient(2px 2px at 28% 42%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 65% 92%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.5px 1.5px at 78% 5%, rgba(198,151,91,0.5), transparent),
    radial-gradient(2px 2px at 8% 55%, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 48% 65%, rgba(198,151,91,0.5), transparent),
    radial-gradient(1.5px 1.5px at 95% 48%, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 22% 95%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 14% 28%, rgba(198,151,91,0.5), transparent),
    radial-gradient(1.5px 1.5px at 33% 52%, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 47% 18%, rgba(198,151,91,0.5), transparent),
    radial-gradient(1.5px 1.5px at 62% 45%, rgba(255,255,255,0.5), transparent),
    radial-gradient(2px 2px at 76% 68%, rgba(198,151,91,0.4), transparent);
  animation: starPulseA 4s ease-in-out infinite;
}

.stars-layer-2 {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1.5px 1.5px at 12% 38%, rgba(198,151,91,0.5), transparent),
    radial-gradient(2px 2px at 25% 18%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 38% 75%, rgba(198,151,91,0.5), transparent),
    radial-gradient(2px 2px at 55% 52%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 68% 12%, rgba(198,151,91,0.4), transparent),
    radial-gradient(1.5px 1.5px at 82% 68%, rgba(255,255,255,0.5), transparent),
    radial-gradient(2px 2px at 95% 35%, rgba(198,151,91,0.5), transparent),
    radial-gradient(1.5px 1.5px at 32% 58%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 75% 85%, rgba(198,151,91,0.5), transparent),
    radial-gradient(2px 2px at 48% 25%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 6% 82%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 20% 5%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 44% 42%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 60% 78%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 73% 32%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 87% 95%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 52% 8%, rgba(198,151,91,0.5), transparent),
    radial-gradient(2px 2px at 16% 62%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1.5px 1.5px at 90% 15%, rgba(198,151,91,0.4), transparent),
    radial-gradient(2px 2px at 35% 95%, rgba(255,255,255,0.5), transparent);
  animation: starPulseB 6s ease-in-out infinite;
}

.stars-layer-3 {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(3px 3px at 20% 50%, rgba(198,151,91,0.35), transparent),
    radial-gradient(2.5px 2.5px at 50% 20%, rgba(198,151,91,0.3), transparent),
    radial-gradient(3px 3px at 80% 70%, rgba(198,151,91,0.35), transparent),
    radial-gradient(2.5px 2.5px at 40% 85%, rgba(198,151,91,0.25), transparent),
    radial-gradient(3px 3px at 70% 35%, rgba(198,151,91,0.3), transparent),
    radial-gradient(2.5px 2.5px at 10% 15%, rgba(198,151,91,0.25), transparent),
    radial-gradient(3px 3px at 30% 90%, rgba(198,151,91,0.3), transparent),
    radial-gradient(2.5px 2.5px at 60% 5%, rgba(198,151,91,0.25), transparent),
    radial-gradient(3px 3px at 90% 55%, rgba(198,151,91,0.3), transparent),
    radial-gradient(2.5px 2.5px at 5% 75%, rgba(198,151,91,0.25), transparent),
    radial-gradient(3px 3px at 45% 60%, rgba(198,151,91,0.2), transparent),
    radial-gradient(2.5px 2.5px at 85% 10%, rgba(198,151,91,0.25), transparent);
  animation: starPulseC 8s ease-in-out infinite;
}

@keyframes starPulseA {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}
@keyframes starPulseB {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.9; }
}
@keyframes starPulseC {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.75; }
}

/* ---- Navigation Bar ---- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 20, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(198, 151, 91, 0.12);
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: 'Uncial Antiqua', cursive;
  font-size: 18px;
  color: #c6975b;
  text-decoration: none;
  letter-spacing: 2px;
  text-shadow: 0 0 20px rgba(198,151,91,0.3);
  flex-shrink: 0;
  transition: opacity 0.3s;
}
.nav-brand:hover { opacity: 0.8; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(198, 151, 91, 0.6);
  text-decoration: none;
  transition: color 0.3s, text-shadow 0.3s;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: #c6975b;
  text-shadow: 0 0 12px rgba(198, 151, 91, 0.4);
}

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(198, 151, 91, 0.7);
  transition: all 0.3s;
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(10, 14, 20, 0.97);
  border-bottom: 1px solid rgba(198, 151, 91, 0.12);
  padding: 20px 32px 28px;
  z-index: 999;
  flex-direction: column;
  gap: 20px;
}

.nav-mobile-menu a {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(198, 151, 91, 0.6);
  text-decoration: none;
  transition: color 0.3s;
}
.nav-mobile-menu a:hover { color: #c6975b; }
.nav-mobile-menu.open { display: flex; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .site-nav { padding: 0 20px; }
}

/* ---- Page Wrapper ---- */
.page-content {
  position: relative;
  z-index: 1;
  padding-top: 60px; /* offset for fixed nav */
}

/* ---- Shared Section Styles ---- */
.section {
  position: relative;
  padding: 100px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

.section-narrow {
  max-width: 760px;
}

.section-full {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

/* Parallax section containers */
.parallax-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  padding: 120px 40px;
}

.parallax-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 14, 20, 0.72);
}

.parallax-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

/* ---- Typography ---- */
.display-title {
  font-family: 'Uncial Antiqua', cursive;
  font-size: clamp(32px, 5vw, 56px);
  color: #c6975b;
  letter-spacing: 3px;
  text-shadow: 0 0 40px rgba(198, 151, 91, 0.3);
  line-height: 1.2;
  margin-bottom: 16px;
}

.display-subtitle {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 300;
  font-style: italic;
  color: rgba(212, 202, 187, 0.85);
  letter-spacing: 0.5px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(198, 151, 91, 0.45);
  margin-bottom: 20px;
  display: block;
}

.body-text {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 19px;
  font-weight: 300;
  line-height: 1.9;
  color: rgba(212, 202, 187, 0.8);
  letter-spacing: 0.3px;
}

.body-text p { margin-bottom: 1.2em; }
.body-text p:last-child { margin-bottom: 0; }

/* ---- Ornamental dividers ---- */
.ornament-line {
  width: 200px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(198,151,91,0.4), rgba(198,151,91,0.6), rgba(198,151,91,0.4), transparent);
  margin: 28px auto;
}

.ornament-line-full {
  width: 100%;
  max-width: 600px;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(198,151,91,0.3), rgba(198,151,91,0.5), rgba(198,151,91,0.3), transparent);
  margin: 60px auto;
}

/* ---- Gold Callout ---- */
.callout-gold {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 400;
  font-style: italic;
  color: #c6975b;
  text-align: center;
  line-height: 1.7;
  letter-spacing: 0.3px;
  padding: 40px 20px;
}

/* ---- CTA Button ---- */
.cta-btn {
  display: inline-block;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 14px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: #c6975b;
  border: 1px solid rgba(198, 151, 91, 0.35);
  background: rgba(198, 151, 91, 0.08);
  padding: 14px 36px;
  border-radius: 30px;
  text-decoration: none;
  transition: background 0.35s, border-color 0.35s, box-shadow 0.35s;
  cursor: pointer;
}
.cta-btn:hover {
  background: rgba(198, 151, 91, 0.18);
  border-color: rgba(198, 151, 91, 0.6);
  box-shadow: 0 0 24px rgba(198, 151, 91, 0.18);
}

/* ---- Email CTA Strip ---- */
.email-strip {
  text-align: center;
  padding: 80px 40px;
}

.email-strip .email-label {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(198, 151, 91, 0.45);
  margin-bottom: 20px;
  display: block;
}

/* ---- Footer ---- */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 48px 40px 56px;
  border-top: 1px solid rgba(198, 151, 91, 0.1);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.footer-links a {
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(198, 151, 91, 0.45);
  text-decoration: none;
  transition: color 0.3s;
}
.footer-links a:hover { color: rgba(198, 151, 91, 0.8); }

.footer-copy {
  font-size: 12px;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, 0.2);
  text-transform: uppercase;
}

/* ---- Fade-in on scroll ---- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Screenshot frames ---- */
.screenshot-frame {
  border-radius: 24px;
  box-shadow:
    0 0 60px rgba(198, 151, 91, 0.12),
    0 0 120px rgba(78, 180, 200, 0.06),
    0 4px 40px rgba(0, 0, 0, 0.5);
  max-width: 100%;
  display: block;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .section { padding: 70px 24px; }
  .parallax-section { padding: 80px 24px; }
  .display-title { letter-spacing: 1.5px; }
}