/* ============================================================
   edantra OS — BASE.CSS
   Design system · Reset · Typography · Nav · Footer · Reveals
   Complete redesign: GTM & customer acquisition platform
   ============================================================ */

/* ─── 1. FONTS ─── */
@import url('https://api.fontshare.com/v2/css?f[]=cabinet-grotesk@700,500,400&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&display=swap');

/* ─── 2. CUSTOM PROPERTIES ─── */
:root {
  --bg:           #FDFBF7;
  --fg:           #1A1A1A;
  --primary:      #D05A32;
  --secondary:    #E8DCCB;
  --accent:       #4A5D4E;
  --border:       #E5DFD3;
  --mid:          #666666;
  --warm-bg:      #F5F0E8;

  --glass-bg:     rgba(253,251,247,0.72);
  --glass-border: rgba(26,26,26,0.07);

  --sans:    'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
  --display: 'Cabinet Grotesk', -apple-system, sans-serif;
  --serif:   'Instrument Serif', Georgia, serif;

  --nav-h:   68px;
  --page-px: 48px;
  --max-w:   1400px;
  --radius:  24px;
}

/* ─── 3. RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video, svg { display: block; max-width: 100%; }
a   { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
::selection { background: var(--primary); color: var(--bg); }

/* ─── 4. LAYOUT ─── */
.s-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--page-px); }

/* ─── 5. TYPOGRAPHY ─── */
.sec-label {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mid);
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 0.95;
}

.t-serif {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.t-body-lg { font-size: 19px; line-height: 1.75; color: rgba(26,26,26,0.68); }
.t-body    { font-size: 16px; line-height: 1.72; color: rgba(26,26,26,0.68); }
.t-body-sm { font-size: 13px; line-height: 1.6;  color: var(--mid); }

/* ─── 6. BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--bg);
  background: var(--fg);
  padding: 14px 28px;
  border-radius: 100px;
  border: 1.5px solid var(--fg);
  transition: background 0.25s, color 0.25s, border-color 0.25s;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover { background: var(--primary); border-color: var(--primary); }

.btn-primary--inv {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--bg);
}
.btn-primary--inv:hover { background: var(--fg); border-color: var(--fg); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--fg);
  background: none;
  padding: 14px 28px;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  transition: background 0.22s, border-color 0.22s, color 0.22s;
  cursor: pointer;
  white-space: nowrap;
}
.btn-ghost:hover { background: var(--fg); color: var(--bg); border-color: var(--fg); }

/* ─── 7. NAV ─── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  padding: 10px var(--page-px);
  transition: padding 0.35s;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-radius: 100px;
  transition: background 0.35s, box-shadow 0.35s, border-color 0.35s;
}

.site-nav.scrolled .nav-inner {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.07);
}

.nav-logo {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--fg);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--fg);
  color: var(--bg);
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}
.nav-logo .os { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.nav-links a {
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 400;
  color: rgba(26,26,26,0.55);
  padding: 8px 16px;
  border-radius: 100px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] { color: var(--fg); background: rgba(26,26,26,0.06); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(26,26,26,0.06);
  padding: 9px;
  cursor: pointer;
}
.nav-hamburger span {
  display: block;
  height: 1.5px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav-hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 190;
  background: var(--bg);
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 80px var(--page-px) 48px;
}
.nav-overlay.is-open { display: flex; }

.nav-overlay-links a {
  font-family: var(--display);
  font-size: clamp(40px, 12vw, 68px);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--fg);
  line-height: 1;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  display: block;
  transition: color 0.2s;
}
.nav-overlay-links a:first-child { border-top: 1px solid var(--border); }
.nav-overlay-links a:hover { color: var(--primary); }

.nav-overlay-meta {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.nav-overlay-meta a,
.nav-overlay-meta span {
  font-size: 13px;
  color: var(--mid);
}
.nav-overlay-meta a:hover { color: var(--fg); }

/* ─── 8. FOOTER ─── */
.site-footer {
  background: var(--fg);
  color: var(--bg);
  padding: 80px 0 48px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--page-px);
}

.footer-cta-block {
  padding-bottom: 60px;
  margin-bottom: 60px;
  border-bottom: 1px solid rgba(253,251,247,0.09);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.footer-cta-block h2 {
  font-family: var(--display);
  font-size: clamp(40px, 5.5vw, 84px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 0.94;
  color: var(--bg);
  max-width: 15ch;
  margin-top: 16px;
}
.footer-cta-block h2 .t-serif { color: var(--primary); }
.footer-cta-block .sec-label { color: rgba(253,251,247,0.35); }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.footer-col-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(253,251,247,0.3);
  margin-bottom: 18px;
  display: block;
}
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col ul a {
  font-size: 15px;
  color: rgba(253,251,247,0.5);
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--bg); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid rgba(253,251,247,0.09);
  padding-top: 28px;
}
.footer-logo {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--bg);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-logo .os { color: var(--primary); }
.footer-copy { font-size: 13px; color: rgba(253,251,247,0.28); }

/* ─── 9. REVEAL ANIMATIONS ─── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s cubic-bezier(0.16,1,0.3,1),
              transform 0.75s cubic-bezier(0.16,1,0.3,1);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
.reveal-d4 { transition-delay: 0.32s; }

/* ─── 10. MARQUEE ─── */
.marquee-wrap {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 17px 0;
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee-wrap:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.marquee-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 28px;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
  white-space: nowrap;
  border-right: 1px solid var(--border);
}
.marquee-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

/* ─── 11. GLASS ─── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.05);
}

/* ─── 12. LIVE DOT ─── */
.live-dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--primary);
  animation: live-pulse 2s ease-in-out infinite;
}
@keyframes live-pulse {
  0%,100% { opacity:1; box-shadow: 0 0 0 0 rgba(208,90,50,0.5); }
  60%     { opacity:0.7; box-shadow: 0 0 0 6px rgba(208,90,50,0); }
}

/* ─── 13. RESPONSIVE ─── */
@media (max-width: 900px) {
  :root { --page-px: 20px; }
  .nav-links { display: none; }
  .nav-right .btn-primary { display: none; }
  .nav-hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-cta-block { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 540px) {
  .footer-grid { grid-template-columns: 1fr; }
}