/* ============================================================
   MUNHU — Base + layout + hero + nav + footer
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* aurora backdrop fixed behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: var(--grad-aurora);
  z-index: -2;
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; letter-spacing: -.02em; margin: 0 0 var(--sp-3); }

.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }

.section { padding-block: var(--sp-9); position: relative; }
.section-head { margin-bottom: var(--sp-6); }
.section-head .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--sp-2);
}
.section-head h2 { font-size: var(--fs-2xl); }
.section-head p { color: var(--text-soft); max-width: 60ch; margin: 0; }

/* skip link */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--accent); color: #fff; padding: var(--sp-2) var(--sp-4); border-radius: var(--r-sm);
}
.skip-link:focus { left: var(--sp-3); top: var(--sp-3); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--r-pill);
  font-weight: 700; font-size: var(--fs-sm);
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: var(--shadow-glow); }
.btn-gold { background: var(--grad-gold); color: #1a1505; }
.btn-ghost { background: rgba(255,255,255,.04); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: rgba(255,255,255,.08); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; gap: var(--sp-5); }
.brand { display: flex; align-items: center; gap: var(--sp-3); font-family: var(--font-display); font-weight: 700; }
.brand img { width: 34px; height: 34px; }

/* Theme-aware logo: white logo on dark UI, black logo on light UI */
.logo-light { display: none; }
.logo-dark { display: block; }
:root[data-theme="light"] .logo-dark { display: none; }
:root[data-theme="light"] .logo-light { display: block; }
.brand span { font-size: var(--fs-md); }
.nav { margin-left: auto; display: flex; align-items: center; gap: var(--sp-5); }
.nav a { font-size: var(--fs-sm); color: var(--text-soft); transition: color var(--dur) var(--ease); }
.nav a:hover, .nav a.active { color: var(--text); }
.nav .btn { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 1.5rem; margin-left: auto; }
.icon-btn { background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--text); width: 38px; height: 38px; border-radius: var(--r-pill); display: grid; place-items: center; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: calc(100svh - var(--header-h)); display: grid; place-items: center; text-align: center; overflow: hidden; padding-block: var(--sp-8); }
.hero-inner { max-width: 880px; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: .2em; text-transform: uppercase;
  color: var(--text-soft); border: 1px solid var(--border); border-radius: var(--r-pill);
  padding: var(--sp-2) var(--sp-4); margin-bottom: var(--sp-5);
}
.hero .kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: #29d17a; box-shadow: 0 0 12px #29d17a; animation: livepulse 2s infinite; }
@keyframes livepulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero h1 { font-size: var(--fs-3xl); margin-bottom: var(--sp-4); }
.hero h1 .grad { background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lede { font-size: var(--fs-md); color: var(--text-soft); max-width: 56ch; margin: 0 auto var(--sp-6); }
.hero-cta { display: flex; gap: var(--sp-3); justify-content: center; flex-wrap: wrap; }
.hero-logo { width: clamp(120px, 22vw, 200px); margin: 0 auto var(--sp-5); filter: drop-shadow(0 8px 40px rgba(102,126,234,.45)); animation: float 8s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* live reach ticker under hero */
.reach-ticker { display: flex; gap: var(--sp-6); justify-content: center; flex-wrap: wrap; margin-top: var(--sp-7); }
.reach-ticker .metric { text-align: center; }
.reach-ticker .num { font-family: var(--font-mono); font-size: var(--fs-xl); font-weight: 800; color: var(--text); display: block; }
.reach-ticker .lbl { font-size: var(--fs-xs); letter-spacing: .15em; text-transform: uppercase; color: var(--text-soft); }

/* scroll hint */
.scroll-hint { position: absolute; bottom: var(--sp-5); left: 50%; transform: translateX(-50%); color: var(--text-soft); font-size: var(--fs-xs); letter-spacing: .2em; text-transform: uppercase; display: grid; place-items: center; gap: var(--sp-2); }
.scroll-hint .chev { width: 18px; height: 18px; border-right: 2px solid var(--text-soft); border-bottom: 2px solid var(--text-soft); transform: rotate(45deg); animation: bob 1.8s infinite; }
@keyframes bob { 0%,100% { transform: rotate(45deg) translate(0,0); } 50% { transform: rotate(45deg) translate(4px,4px); } }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding-block: var(--sp-8) var(--sp-6); margin-top: var(--sp-8); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: var(--sp-6); }
.footer-grid h4 { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: .15em; text-transform: uppercase; color: var(--text-soft); margin-bottom: var(--sp-3); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-2); }
.footer-grid a { color: var(--text-soft); font-size: var(--fs-sm); }
.footer-grid a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-7); padding-top: var(--sp-5); border-top: 1px solid var(--border); color: var(--text-soft); font-size: var(--fs-xs); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .nav { position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg-elev); border-bottom: 1px solid var(--border); padding: var(--sp-3); transform: translateY(-150%); transition: transform var(--dur) var(--ease); }
  .nav.open { transform: none; }
  .nav a { padding: var(--sp-3); }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding-block: var(--sp-8); }
}