/* ============================================================
   SUPERBLOCK — Marketing Site
   Aesthetic: Precision Vault — institutional DeFi, terminal warmth
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

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

/* --- TOKENS (canonical: dapp/screens/shared.css) --- */
:root {
  --sb-red-400: #F06B63;
  --sb-red-500: #E63024;
  --sb-red-600: #D42318;
  --sb-red-700: #B21A12;

  --sb-bg-primary: #0A0B0F;
  --sb-bg-secondary: #111218;
  --sb-bg-tertiary: #171821;
  --sb-bg-elevated: #1C1D28;
  --sb-bg-card: #14151E;
  --sb-bg-card-hover: #1A1B26;
  --sb-bg-input: #0E0F16;

  --sb-border-subtle: rgba(255, 255, 255, 0.06);
  --sb-border-default: rgba(255, 255, 255, 0.10);
  --sb-border-strong: rgba(255, 255, 255, 0.16);

  --sb-text-primary: #F0F0F3;
  --sb-text-secondary: rgba(240, 240, 243, 0.56);
  --sb-text-tertiary: rgba(240, 240, 243, 0.32);
  --sb-text-disabled: rgba(240, 240, 243, 0.18);

  --sb-success: #2DD4A0;
  --sb-yield: #C8A44E;
  --sb-yield-bright: #E8C65A;
  --sb-yield-muted: rgba(200, 164, 78, 0.12);

  --sb-font-display: 'Outfit', -apple-system, sans-serif;
  --sb-font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  --sb-text-xs: 0.6875rem;
  --sb-text-sm: 0.8125rem;
  --sb-text-base: 0.9375rem;
  --sb-text-lg: 1.0625rem;
  --sb-text-xl: 1.25rem;
  --sb-text-2xl: 1.5rem;
  --sb-text-3xl: 2rem;

  --sb-space-1: 4px;
  --sb-space-2: 8px;
  --sb-space-3: 12px;
  --sb-space-4: 16px;
  --sb-space-5: 20px;
  --sb-space-6: 24px;
  --sb-space-8: 32px;
  --sb-space-10: 40px;
  --sb-space-12: 48px;
  --sb-space-16: 64px;
  --sb-space-20: 80px;
  --sb-space-24: 96px;

  --sb-radius-sm: 4px;
  --sb-radius-md: 8px;
  --sb-radius-lg: 10px;
  --sb-radius-xl: 12px;
  --sb-radius-2xl: 16px;
  --sb-radius-full: 9999px;

  --sb-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --sb-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --sb-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --sb-shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
  --sb-shadow-glow-red: 0 0 24px rgba(230, 48, 36, 0.15);
  --sb-shadow-glow-red-strong: 0 0 48px rgba(230, 48, 36, 0.25);
  --sb-shadow-glow-yield: 0 0 20px rgba(200, 164, 78, 0.12);

  --max-width: 1200px;
  --max-width-narrow: 800px;
  --nav-height: 72px;
}


/* --- BASE --- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--sb-font-display);
  font-size: var(--sb-text-base);
  color: var(--sb-text-primary);
  background-color: var(--sb-bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Grain overlay for analog warmth */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

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

:focus-visible {
  outline: 2px solid var(--sb-red-400);
  outline-offset: 2px;
}


/* --- LAYOUT --- */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--sb-space-6);
}


/* --- STAGGERED LOAD ANIMATION --- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }
.delay-7 { animation-delay: 0.7s; }


/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  background: rgba(10, 11, 15, 0.8);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--sb-border-subtle);
  animation: slideDown 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo img {
  height: 38px;
  width: auto;
}


/* --- MAIN NAV --- */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--sb-space-2);
}

.nav-link {
  font-family: var(--sb-font-display);
  font-size: var(--sb-text-sm);
  font-weight: 500;
  color: var(--sb-text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sb-space-2) var(--sb-space-4);
  border-radius: var(--sb-radius-md);
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--sb-text-primary);
  background: rgba(255, 255, 255, 0.04);
}


/* --- CSS-ONLY DROPDOWNS --- */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + var(--sb-space-2));
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 180px;
  background: var(--sb-bg-elevated);
  border: 1px solid var(--sb-border-default);
  border-radius: var(--sb-radius-md);
  padding: var(--sb-space-2);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
  box-shadow: var(--sb-shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: block;
  padding: var(--sb-space-3) var(--sb-space-4);
  font-size: var(--sb-text-sm);
  font-weight: 450;
  color: var(--sb-text-secondary);
  border-radius: var(--sb-radius-md);
  transition: background 0.15s, color 0.15s;
}

.dropdown-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--sb-text-primary);
}


/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--sb-font-display);
  font-weight: 600;
  font-size: var(--sb-text-sm);
  border: none;
  border-radius: var(--sb-radius-md);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.btn-primary {
  background: var(--sb-red-500);
  color: #fff;
  padding: var(--sb-space-3) var(--sb-space-6);
  box-shadow: var(--sb-shadow-glow-red);
}

.btn-primary:hover {
  background: var(--sb-red-600);
  box-shadow: var(--sb-shadow-glow-red-strong);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-lg {
  padding: var(--sb-space-4) var(--sb-space-10);
  font-size: var(--sb-text-base);
}


/* --- MOBILE NAV TOGGLE (CSS-only) --- */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  width: 32px;
  height: 32px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  z-index: 110;
  position: relative;
}

.nav-toggle-label span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--sb-text-primary);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center;
}


/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(var(--nav-height) + var(--sb-space-24));
  padding-bottom: var(--sb-space-16);
  position: relative;
  overflow: hidden;
}

/* Ambient red glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(230, 48, 36, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: var(--max-width-narrow);
  margin-inline: auto;
}

.hero-headline {
  font-family: var(--sb-font-display);
  font-weight: 800;
  font-size: clamp(3rem, 10vw, 5.5rem);
  line-height: 1.0;
  letter-spacing: -0.04em;
  margin-bottom: var(--sb-space-6);
  color: var(--sb-text-primary);
}

.hero-sub {
  font-size: var(--sb-text-lg);
  font-weight: 400;
  color: var(--sb-text-secondary);
  line-height: 1.75;
  margin-bottom: var(--sb-space-10);
  max-width: 540px;
  margin-inline: auto;
}

.hero-sub strong {
  color: var(--sb-text-primary);
  font-weight: 600;
}

/* APY badge — terminal readout feel */
.hero-apy {
  display: inline-flex;
  align-items: center;
  gap: var(--sb-space-3);
  background: var(--sb-bg-card);
  border: 1px solid rgba(200, 164, 78, 0.15);
  border-radius: var(--sb-radius-md);
  padding: var(--sb-space-2) var(--sb-space-5) var(--sb-space-2) var(--sb-space-4);
  margin-bottom: var(--sb-space-10);
  box-shadow: var(--sb-shadow-glow-yield);
}

.apy-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sb-yield-bright);
  box-shadow: 0 0 8px var(--sb-yield);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.apy-label {
  font-family: var(--sb-font-mono);
  font-size: var(--sb-text-sm);
  color: var(--sb-text-secondary);
  font-weight: 500;
}

.apy-separator {
  width: 1px;
  height: 16px;
  background: var(--sb-border-default);
}

.apy-value {
  font-family: var(--sb-font-mono);
  font-size: var(--sb-text-sm);
  font-weight: 600;
  color: var(--sb-yield-bright);
  letter-spacing: 0.02em;
}


/* Hero image */
.hero-image-wrapper {
  margin-top: var(--sb-space-16);
  position: relative;
}

/* Glow behind the image */
.hero-image-wrapper::before {
  content: '';
  position: absolute;
  inset: 20px;
  background: radial-gradient(ellipse at center, rgba(230, 48, 36, 0.04) 0%, transparent 70%);
  border-radius: var(--sb-radius-2xl);
  z-index: 0;
}

.hero-image {
  position: relative;
  border-radius: var(--sb-radius-xl);
  overflow: hidden;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  display: block;
}


/* ============================================================
   FEATURES
   ============================================================ */
.features {
  padding: var(--sb-space-24) 0;
  position: relative;
}

/* Subtle top rule with gradient fade */
.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(600px, 80%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--sb-border-default), transparent);
}

.features-header {
  text-align: center;
  margin-bottom: var(--sb-space-16);
}

.features-eyebrow {
  font-family: var(--sb-font-mono);
  font-size: var(--sb-text-xs);
  font-weight: 600;
  color: var(--sb-red-400);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: var(--sb-space-4);
}

.features-title {
  font-family: var(--sb-font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, var(--sb-text-3xl));
  letter-spacing: -0.02em;
  margin-bottom: var(--sb-space-4);
}

.features-sub {
  color: var(--sb-text-secondary);
  font-size: var(--sb-text-lg);
  max-width: 500px;
  margin-inline: auto;
  line-height: 1.7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sb-space-5);
}

.feature-card {
  background: var(--sb-bg-card);
  border: 1px solid var(--sb-border-subtle);
  border-radius: var(--sb-radius-2xl);
  padding: var(--sb-space-10) var(--sb-space-8);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}

/* Subtle inner glow on hover */
.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--sb-radius-2xl);
  opacity: 0;
  transition: opacity 0.3s;
  background: radial-gradient(ellipse at 50% 0%, rgba(230, 48, 36, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.feature-card:hover {
  border-color: var(--sb-border-strong);
  box-shadow: var(--sb-shadow-md);
  transform: translateY(-2px);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--sb-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sb-space-6);
  font-size: 1.25rem;
  position: relative;
}

.feature-icon--collateral {
  background: rgba(230, 48, 36, 0.08);
  color: var(--sb-red-400);
}

.feature-icon--stake {
  background: var(--sb-yield-muted);
  color: var(--sb-yield-bright);
}

.feature-icon--security {
  background: rgba(45, 212, 160, 0.08);
  color: var(--sb-success);
}

.feature-heading {
  font-family: var(--sb-font-display);
  font-weight: 600;
  font-size: var(--sb-text-xl);
  margin-bottom: var(--sb-space-3);
  letter-spacing: -0.01em;
}

.feature-desc {
  color: var(--sb-text-secondary);
  font-size: var(--sb-text-sm);
  line-height: 1.75;
}


/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding: var(--sb-space-16) 0 var(--sb-space-10);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(600px, 80%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--sb-border-default), transparent);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: var(--sb-space-12);
  margin-bottom: var(--sb-space-16);
}

.footer-brand {
  max-width: 300px;
  flex-shrink: 0;
}

.footer-brand .logo img {
  height: 32px;
}

.footer-tagline {
  margin-top: var(--sb-space-5);
  font-size: var(--sb-text-sm);
  color: var(--sb-text-tertiary);
  line-height: 1.75;
}

.footer-links {
  display: flex;
  gap: var(--sb-space-16);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--sb-space-3);
}

.footer-col-title {
  font-family: var(--sb-font-display);
  font-weight: 600;
  font-size: var(--sb-text-xs);
  color: var(--sb-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--sb-space-2);
}

.footer-col a {
  font-size: var(--sb-text-sm);
  color: var(--sb-text-secondary);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--sb-text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sb-space-8);
  border-top: 1px solid var(--sb-border-subtle);
}

.copyright {
  font-size: var(--sb-text-xs);
  color: var(--sb-text-tertiary);
}

.social-links {
  display: flex;
  align-items: center;
  gap: var(--sb-space-4);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.35;
  transition: opacity 0.2s;
}

.social-links a:hover {
  opacity: 1;
}

.social-links img {
  width: 18px;
  height: 18px;
}


/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }

  .footer-links {
    gap: var(--sb-space-10);
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --nav-height: 64px;
  }

  .nav-toggle-label {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--nav-height) + var(--sb-space-10)) var(--sb-space-6) var(--sb-space-8);
    background: var(--sb-bg-secondary);
    border-left: 1px solid var(--sb-border-subtle);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    gap: 0;
    z-index: 105;
    overflow-y: auto;
  }

  .nav-toggle:checked ~ .main-nav {
    transform: translateX(0);
  }

  /* Hamburger → X animation */
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* Overlay behind mobile nav */
  .nav-toggle:checked ~ .nav-overlay {
    opacity: 1;
    visibility: visible;
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 104;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .nav-link {
    padding: var(--sb-space-3) var(--sb-space-4);
    font-size: var(--sb-text-base);
    text-align: left;
  }

  .dropdown-menu {
    position: static;
    transform: none;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0 0 0 var(--sb-space-4);
    margin-bottom: var(--sb-space-2);
    opacity: 1;
    visibility: visible;
    min-width: auto;
  }

  .dropdown-item {
    padding: var(--sb-space-2) var(--sb-space-4);
    font-size: var(--sb-text-sm);
  }

  .nav-cta {
    margin-top: var(--sb-space-6);
    text-align: center;
  }

  /* Hero */
  .hero {
    padding-top: calc(var(--nav-height) + var(--sb-space-16));
    padding-bottom: var(--sb-space-12);
  }

  .hero-headline {
    font-size: clamp(2.5rem, 12vw, 3.5rem);
  }

  .hero-image-wrapper {
    margin-top: var(--sb-space-12);
  }

  /* Features */
  .features {
    padding: var(--sb-space-16) 0;
  }

  .features-header {
    margin-bottom: var(--sb-space-10);
  }

  .feature-card {
    padding: var(--sb-space-8) var(--sb-space-6);
  }

  /* Footer */
  .footer-top {
    flex-direction: column;
    gap: var(--sb-space-10);
  }

  .footer-brand {
    max-width: none;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: var(--sb-space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--sb-space-5);
    text-align: center;
  }
}

/* Large screens */
@media (min-width: 1440px) {
  .container {
    max-width: 1280px;
  }
}