/* ── Core Epoch — Shared styles (coreepoch.dev) ── */

:root {
  --bg: #050505;
  --copper: #d4a574;
  --glass: rgba(10, 10, 12, 0.25);
  --glass-border: rgba(255, 255, 255, 0.06);
  --text: #e8ecf2;
  --text-muted: #8b95a5;
  --sans: 'Inter', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --max-w: 1060px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { 
  font-family: var(--sans); 
  background: var(--bg); 
  color: var(--text); 
  line-height: 1.6; 
  overflow-x: hidden; 
  -webkit-font-smoothing: antialiased;
}

/* ── BACKGROUND ── */
.fixed-bg {
  position: fixed; 
  top: 0; left: 0; 
  width: 100vw; height: 100vh;
  background: url('hero-bg.png') center/cover no-repeat;
  background-image: image-set(url('hero-bg.webp') type('image/webp'), url('hero-bg.png') type('image/png'));
  z-index: -1;
  opacity: 0.8; 
}
.fixed-bg::after {
  content: ''; 
  position: absolute; inset: 0;
  background: radial-gradient(circle at center, transparent 0%, var(--bg) 110%);
}
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }

/* ── NAV ── */
#nav { padding: 2rem 0; position: absolute; width: 100%; z-index: 10; top: 0; left: 0; }
.nav-inner { 
  max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; 
  display: flex; justify-content: space-between; align-items: center; 
}
.nav-logo { 
  font-family: var(--mono); color: var(--text); 
  text-decoration: none; letter-spacing: 0.2em; 
  font-size: 0.9rem; font-weight: 600; 
}
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-link {
  font-family: var(--sans); color: var(--text-muted); 
  text-decoration: none; font-size: 0.85rem; 
  transition: color 0.3s var(--ease);
}
.nav-link:hover { color: var(--copper); }
.nav-cta { 
  font-family: var(--mono); color: var(--copper); 
  text-decoration: none; font-size: 0.8rem; 
  border: 1px solid var(--glass-border); 
  padding: 0.5rem 1rem; border-radius: 4px; 
  transition: border-color 0.3s, background 0.3s; 
  background: var(--glass); backdrop-filter: blur(8px);
}
.nav-cta:hover { border-color: var(--copper); background: rgba(212, 165, 116, 0.1); }

/* ── HERO ── */
#hero { height: 100vh; display: flex; align-items: center; padding: 0 2rem; }
.hero-content { max-width: var(--max-w); margin: 0 auto; width: 100%; }
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 300; letter-spacing: -0.03em; margin-bottom: 1rem; }
.hero-sub { font-family: var(--mono); color: var(--copper); letter-spacing: 0.15em; font-size: 0.85rem; text-transform: uppercase; }

/* ── PRODUCT CARDS ── */
#products { 
  padding: 10vh 0 15vh; 
  background: linear-gradient(to bottom, transparent, rgba(5,5,5,0.8) 40%, var(--bg) 100%); 
  min-height: 100vh; 
}
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.product-card { 
  padding: 2.5rem 2rem; 
  background: var(--glass); 
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border); 
  border-radius: 12px; 
  transition: transform 0.4s var(--ease), border-color 0.4s; 
}
.product-card:hover { transform: translateY(-8px); border-color: rgba(212, 165, 116, 0.3); }
.product-mono { font-family: var(--mono); color: var(--text-muted); font-size: 0.7rem; letter-spacing: 0.12em; margin-bottom: 1.5rem; display: block; text-transform: uppercase; }
.product-card h3 { font-size: 1.75rem; font-weight: 400; margin-bottom: 1rem; color: var(--text); letter-spacing: -0.02em; }
.product-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; }
.product-link {
  font-family: var(--mono); color: var(--copper); 
  text-decoration: none; font-size: 0.8rem; letter-spacing: 0.05em; 
  transition: opacity 0.3s;
}
.product-link:hover { opacity: 0.7; }

/* ── LEGAL PAGES (privacy, terms, commercial-license) ── */
.legal-bg .fixed-bg { opacity: 0.4; }
.legal-bg .fixed-bg::after { background: radial-gradient(circle at center, rgba(5,5,5,0.6) 0%, var(--bg) 110%); }
#nav.solid { border-bottom: 1px solid var(--glass-border); background: rgba(5,5,5,0.8); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
#content { padding: 150px 0 100px; min-height: 100vh; }
.article-container { max-width: 760px; margin: 0 auto; padding: 0 2rem; }
.article-header { margin-bottom: 3rem; text-align: center; }
.article-header h1 { font-size: clamp(1.8rem, 3vw, 2.5rem); font-weight: 300; letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 1rem; }
.article-meta { font-family: var(--mono); color: var(--copper); font-size: 0.8rem; letter-spacing: 0.05em; text-transform: uppercase; }
.paper { 
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 3rem 4rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.paper h2 { font-size: 1.25rem; font-weight: 600; color: var(--copper); margin: 2rem 0 0.75rem; }
.paper h2:first-child { margin-top: 0; }
.paper p { margin-bottom: 1rem; color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }
.paper ul, .paper ol { margin-bottom: 1rem; padding-left: 1.5rem; color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }
.paper li { margin-bottom: 0.4rem; }
.paper a { color: var(--copper); text-decoration: none; border-bottom: 1px solid rgba(212,165,116,0.3); transition: border-color 0.3s; }
.paper a:hover { border-color: var(--copper); }
.paper strong { color: var(--text); }

/* ── FAQ ── */
#faq { padding: 8vh 0 10vh; background: var(--bg); position: relative; border-top: 1px solid rgba(255,255,255,0.03); }
.faq-title { font-size: 2.25rem; font-weight: 300; letter-spacing: -0.02em; margin-bottom: 3rem; text-align: center; color: var(--text); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 2rem; }
.faq-item { 
  padding: 2rem; 
  background: var(--glass); 
  border: 1px solid var(--glass-border); 
  border-radius: 8px; 
  backdrop-filter: blur(10px);
}
.faq-item h4 { font-family: var(--sans); font-size: 1.15rem; font-weight: 600; color: var(--copper); margin-bottom: 0.75rem; letter-spacing: -0.01em; }
.faq-item p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; }

/* ── FOOTER ── */
#footer { padding: 4rem 0 3rem 0; text-align: center; border-top: 1px solid rgba(255,255,255,0.03); background: var(--bg); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.footer-brand { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.15em; color: var(--text-muted); }
.footer-links { display: flex; gap: 1.5rem; font-size: 0.8rem; }
.footer-links a { color: var(--text-muted); text-decoration: none; transition: color 0.2s var(--ease); opacity: 0.8; }
.footer-links a:hover { color: var(--copper); opacity: 1; }
.footer-copy { font-size: 0.75rem; color: var(--text-muted); opacity: 0.5; }

/* ── REVEALS ── */
.reveal { opacity: 0; transform: translateY(30px); transition: all 1s var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── ERROR 404 ── */
.error-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; text-align: center; }
.error-code { font-size: clamp(4rem, 12vw, 8rem); font-weight: 300; color: var(--copper); letter-spacing: -0.04em; line-height: 1; margin-bottom: 0.5rem; }
.error-desc { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 2rem; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-inner { padding: 0 1rem; }
  #hero { padding: 0 1rem; }
  .products-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 1rem; }
  .paper { padding: 2rem 1.5rem; }
  .article-container { padding: 0 1rem; }
}