/* ============================================
   ARK Landing Page — Styles
   ============================================ */

:root {
  --bg: #0a0a0f;
  --bg-2: #12121a;
  --bg-3: #1a1a28;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(255, 255, 255, 0.15);
  --text: #f0f0f5;
  --text-dim: #9090a8;
  --text-muted: #606078;
  --gold: #f0b90b;
  --gold-light: #ffd966;
  --gold-dark: #c89907;
  --cyan: #00d4ff;
  --purple: #8b5cf6;
  --purple-dark: #6d28d9;
  --gradient-gold: linear-gradient(135deg, #f0b90b 0%, #ffd966 50%, #f0b90b 100%);
  --gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
  --gradient-bg: linear-gradient(180deg, #0a0a0f 0%, #12121a 50%, #0a0a0f 100%);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 8px 32px rgba(240, 185, 11, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img {
  max-width: 100%;
  display: block;
}

code {
  font-family: 'Space Grotesk', monospace;
  font-size: 0.85em;
  color: var(--gold-light);
  background: rgba(240, 185, 11, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  word-break: break-all;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn i {
  font-size: 1.1em;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-gold);
  color: #0a0a0f;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(240, 185, 11, 0.3);
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-bright);
}

.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--gold);
  color: var(--gold);
}

.btn-nav {
  padding: 8px 16px;
  font-size: 0.85rem;
  background: var(--gradient-gold);
  color: #0a0a0f;
}

.btn-nav:hover {
  transform: translateY(-1px);
}

/* ---- Navbar ---- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  flex-shrink: 0;
}

.logo-mark {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

/* ---- Hero ---- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 30%, rgba(240, 185, 11, 0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 80%, rgba(0, 212, 255, 0.08) 0%, transparent 50%);
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  max-width: 600px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00e676;
  box-shadow: 0 0 8px #00e676;
  animation: pulse 2s infinite;
}

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

#hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.gradient-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-img {
  width: 100%;
  max-width: 450px;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
              0 0 80px rgba(240, 185, 11, 0.1);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* ---- Sections ---- */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--bg-2);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gold);
  padding: 6px 16px;
  background: rgba(240, 185, 11, 0.08);
  border: 1px solid rgba(240, 185, 11, 0.2);
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-header h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-dim);
}

/* ---- Civilization Cards ---- */
.civ-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.civ-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}

.civ-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-bright);
  transform: translateY(-4px);
}

.civ-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240, 185, 11, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.civ-icon i {
  font-size: 1.8rem;
  color: var(--gold);
}

.civ-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.civ-card p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* ---- Ecosystem ---- */
.ecosystem-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.eco-text h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin: 12px 0 20px;
}

.eco-text p {
  color: var(--text-dim);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.eco-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.eco-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.eco-list i {
  color: var(--gold);
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.eco-list strong {
  color: var(--text);
}

.eco-visual {
  display: flex;
  justify-content: center;
}

.eco-img {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

/* ---- Steps ---- */
.steps {
  display: flex;
  align-items: stretch;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.step {
  flex: 1;
  min-width: 220px;
  max-width: 260px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: var(--transition);
}

.step:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.3;
  margin-bottom: 12px;
}

.step-content h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

.step-arrow {
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

.step-arrow i {
  font-size: 1.5rem;
}

.eco-image-bar {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.dashboard-img {
  width: 100%;
  border-radius: var(--radius-lg);
}

/* ---- Contracts ---- */
.contracts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contract-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.contract-card:hover {
  border-color: var(--border-bright);
  background: var(--surface-hover);
}

.contract-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.contract-header i {
  font-size: 1.3rem;
  color: var(--gold);
}

.contract-header h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
}

.contract-addr {
  display: block;
  font-size: 0.78rem;
  padding: 8px 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow-wrap: break-all;
  word-break: break-all;
}

.contract-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---- Why Grid ---- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.why-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.why-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.why-icon i {
  font-size: 1.5rem;
  color: var(--purple);
}

.why-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ---- FAQ ---- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item[open] {
  border-color: var(--border-bright);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 1rem;
  list-style: none;
  transition: var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--gold);
}

.faq-item summary i {
  transition: transform 0.3s ease;
  color: var(--text-muted);
}

.faq-item[open] summary i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-answer a {
  color: var(--gold);
  text-decoration: underline;
}

/* ---- CTA ---- */
.cta-section {
  padding: 80px 0;
  background: var(--bg);
}

.cta-box {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: 60px 40px;
  background: linear-gradient(135deg, rgba(240, 185, 11, 0.05), rgba(139, 92, 246, 0.05));
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
}

.cta-box h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-box p {
  color: var(--text-dim);
  margin-bottom: 32px;
  font-size: 1.1rem;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Footer ---- */
footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo-mark {
  font-size: 1.8rem;
  display: inline-block;
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--text-dim);
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-col h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.footer-col a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-bottom .disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
  }

  .hero-img {
    max-width: 320px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .civ-grid {
    grid-template-columns: 1fr;
  }

  .ecosystem-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .contracts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .contracts-grid {
    grid-template-columns: 1fr;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
    justify-content: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
  }
}