/* ==========================================================================
   LIQUIDA - REGULATED LIQUIDITY INFRASTRUCTURE FOR ROBINHOOD CHAIN (EXACT REPLICA)
   Design System: Surface Shell (#f6f1e4), Deep Navy (#1f2e4d), Warm Gold (#c2a46f / #d8c08f),
                  Libre Baskerville + Inter Typography, Golden Liquidity Waves
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  --bg-shell: #f6f1e4;
  --bg-cream-light: #faf7ee;
  --bg-sand: #f3eddc;

  --navy-primary: #1f2e4d;
  --navy-dark: #162239;
  --navy-accent: #2b3f66;

  --gold-primary: #c2a46f;
  --gold-light: #d8c08f;
  --gold-warm: #e9ddbc;
  --gold-border: #b8955b;

  --stroke: rgba(31, 46, 77, 0.12);
  --stroke-gold: rgba(194, 164, 111, 0.4);

  --text-navy: #1f2e4d;
  --text-muted: rgba(31, 46, 77, 0.74);
  --text-subtle: rgba(31, 46, 77, 0.48);

  --font-serif: 'Libre Baskerville', Georgia, serif;
  --font-sans: 'Inter', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-shell);
  color: var(--text-navy);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.55;
  background: var(--bg-shell);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* Layout Wrappers */
.wrap-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.navbar-liquida {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 48px;
  background: transparent;
  position: relative;
  z-index: 100;
}

.brand-logo-liquida {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy-primary);
}

.nav-links-liquida {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link-liquida {
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(31, 46, 77, 0.8);
  transition: all 0.2s ease;
}

.nav-link-liquida:hover, .nav-link-liquida.active {
  background: var(--bg-sand);
  color: var(--navy-primary);
}

/* Mobile Hamburger Drawer Button */
.btn-hamburger-liquida {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--navy-primary);
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.btn-hamburger-liquida span {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--navy-primary);
  margin: 3px 0;
}

/* Mobile Drawer Overlay */
.mobile-menu-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(246, 241, 228, 0.98);
  backdrop-filter: blur(10px);
  padding: 32px 24px;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-menu-drawer.open {
  display: flex;
}

/* CTA Buttons */
.btn-liquida-navy {
  background: var(--navy-primary);
  color: #ffffff;
  padding: 12px 28px;
  border-radius: 9999px;
  border: 2px solid var(--navy-primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  box-shadow: 0 6px 18px rgba(31, 46, 77, 0.2);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-liquida-navy:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(31, 46, 77, 0.26);
}

.btn-liquida-gold {
  background: var(--gold-warm);
  color: var(--navy-primary);
  padding: 12px 28px;
  border-radius: 9999px;
  border: 2px solid var(--gold-border);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  box-shadow: 0 6px 18px rgba(38, 44, 58, 0.1);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-liquida-gold:hover {
  background: #dfcea3;
  transform: translateY(-1px);
}

.btn-liquida-cream {
  background: var(--bg-cream-light);
  color: rgba(31, 46, 77, 0.85);
  padding: 12px 28px;
  border-radius: 9999px;
  border: 2px solid #c4ab7a;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  box-shadow: 0 6px 18px rgba(38, 44, 58, 0.08);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-liquida-cream:hover {
  background: #f6efde;
  transform: translateY(-1px);
}

/* Hero Section */
.hero-liquida {
  padding: 60px 0 100px;
  text-align: center;
  position: relative;
}

h1.hero-h1-liquida {
  font-family: var(--font-serif);
  font-size: clamp(40px, 5.5vw, 68px);
  line-height: 1.12;
  letter-spacing: -0.026em;
  color: var(--navy-primary);
  max-width: 980px;
  margin: 0 auto;
}

/* Partners Marquee */
.partners-marquee-wrap {
  width: 100%;
  overflow: hidden;
  border-top: 1px solid #dfd4bc;
  border-bottom: 1px solid #dfd4bc;
  padding: 28px 0;
  margin-top: 40px;
  position: relative;
}

.partners-marquee-track {
  display: flex;
  align-items: center;
  gap: 48px;
  width: max-content;
  animation: marqueeScroll 25s linear infinite;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.partner-item-box {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  opacity: 0.75;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy-primary);
  letter-spacing: 0.08em;
}

/* Sticky Presentation Slides */
.slide-section-cream {
  min-height: 100vh;
  background: linear-gradient(180deg, #fdf9f0 0%, #efe4cb 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.slide-section-navy {
  min-height: 100vh;
  background: linear-gradient(180deg, #2f4774 0%, #1f2e4d 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.slide-section-navy-dark {
  min-height: 100vh;
  background: linear-gradient(180deg, #2b3f66 0%, #1f2e4d 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.slide-section-roadmap {
  min-height: 100vh;
  background: linear-gradient(180deg, #1f2e4d 0%, #162239 100%);
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: sticky;
  top: 0;
  z-index: 40;
}

/* Slide Cards */
.slide-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 680px;
  margin: 32px auto 0;
}

.slide-card-cream {
  background: rgba(255, 251, 242, 0.85);
  border: 1px solid #d7c7a2;
  border-radius: 20px;
  padding: 20px 24px;
  text-align: left;
  box-shadow: 0 8px 18px rgba(68, 52, 26, 0.05);
}

.slide-step-row {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  padding: 20px 24px;
  text-align: left;
  margin-bottom: 16px;
  backdrop-filter: blur(4px);
}

/* Footer Section */
footer.footer-liquida {
  background: var(--navy-primary);
  color: #ffffff;
  padding: 80px 0 40px;
  border-top: 1px solid var(--stroke-gold);
  position: relative;
  z-index: 50;
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

/* Comprehensive Multi-Device Responsiveness (Mobile, Tablet, Laptop, Ultra-Wide 4K) */
@media (max-width: 1024px) {
  .wrap-container { padding: 0 24px; }
  .navbar-liquida { padding: 18px 24px; }
  h1.hero-h1-liquida { font-size: clamp(32px, 6vw, 54px); }
  .footer-nav-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .navbar-liquida {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
  }

  .desktop-nav-links {
    display: none !important;
  }

  .btn-hamburger-liquida {
    display: flex !important;
  }

  .hero-liquida { padding: 24px 0 48px; }
  h1.hero-h1-liquida { font-size: 2.1rem; line-height: 1.15; }
  
  .btn-liquida-navy, .btn-liquida-gold, .btn-liquida-cream {
    width: 100%;
    margin-bottom: 8px;
  }
  
  .slide-section-cream, .slide-section-navy, .slide-section-navy-dark, .slide-section-roadmap {
    padding: 48px 20px;
    min-height: auto;
    position: relative;
  }
  
  .slide-grid-2 { grid-template-columns: 1fr; gap: 14px; }
  .footer-nav-grid { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 480px) {
  h1.hero-h1-liquida { font-size: 1.85rem; }
  .brand-logo-liquida { font-size: 1.15rem; }
  .partner-item-box { font-size: 0.95rem; }
}

@media (min-width: 1440px) {
  .wrap-container { max-width: 1320px; }
  h1.hero-h1-liquida { font-size: 4.5rem; }
}