/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.5);
  --text-muted: rgba(255, 255, 255, 0.3);
  
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #a855f7;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;
  
  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, sans-serif;
  
  /* Spacing */
  --container-max: 1200px;
  --section-gap: 80px;
  
  /* Effects */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

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

/* ===== App Container ===== */
.app-container {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Background Effects ===== */
.bg-effects {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-tertiary) 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation-delay: -14s;
  opacity: 0.2;
}

.grid-overlay {
  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: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(-30px, -20px) scale(1.02); }
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: opacity var(--transition-fast);
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 36px;
  height: 36px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.version-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 8px;
  background: var(--accent-gradient);
  border-radius: 20px;
  letter-spacing: 0.02em;
}

.connect-wallet-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.connect-wallet-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative;
  padding: 80px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  top: -100px;
  left: -100px;
  pointer-events: none;
}

.hero-content {
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

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

.hero-description {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--accent-gradient);
  border-radius: 12px;
  color: white;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 80px rgba(99, 102, 241, 0.5);
}

.btn-primary.small {
  padding: 12px 20px;
  font-size: 13px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 24px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.btn-secondary:hover {
  color: var(--text-primary);
}

.btn-secondary svg {
  transition: transform var(--transition-fast);
}

.btn-secondary:hover svg {
  transform: translateX(4px);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.migration-illustration {
  display: flex;
  align-items: center;
  gap: 24px;
}

.contract-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  transition: all var(--transition-base);
}

.contract-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.old-contract {
  opacity: 0.6;
}

.new-contract {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-glow);
}

.new-contract .contract-icon {
  color: var(--accent-primary);
}

.contract-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: 16px;
  color: var(--text-secondary);
}

.contract-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.contract-version {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border-radius: 20px;
  text-decoration: none;
  transition: all var(--transition-fast);
}

a.contract-version:hover {
  color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.1);
}

.migration-arrow {
  position: relative;
  display: flex;
  align-items: center;
}

.arrow-particles {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.arrow-particles span {
  width: 4px;
  height: 4px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: particleMove 1.5s ease-in-out infinite;
}

.arrow-particles span:nth-child(2) { animation-delay: 0.3s; }
.arrow-particles span:nth-child(3) { animation-delay: 0.6s; }

@keyframes particleMove {
  0% { transform: translateX(-20px); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateX(20px); opacity: 0; }
}

/* ===== Stats Section ===== */
.stats-section {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 40px 0;
  margin-bottom: var(--section-gap);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 12px;
  color: var(--accent-primary);
}

.stat-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ===== Migration Steps ===== */
.migration-section {
  padding: 60px 0;
  margin-bottom: var(--section-gap);
}

.steps-container {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
}

.step-card {
  flex: 1;
  max-width: 320px;
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  text-align: center;
  transition: all var(--transition-base);
}

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

.step-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.4;
  margin-bottom: 16px;
}

.step-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 16px;
  color: var(--accent-primary);
}

.step-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 100px;
}

/* ===== Status Section ===== */
.status-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: var(--section-gap);
}

.status-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
}

.status-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
}

.status-badge.pending {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.status-badge.ready {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.panel-content {
  padding: 40px 24px;
}

.connect-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.prompt-icon {
  color: var(--text-muted);
}

.prompt-text {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 280px;
}

/* Info Cards */
.info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.info-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  transition: all var(--transition-fast);
}

.info-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.info-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  flex-shrink: 0;
}

.info-icon.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.info-icon.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.info-icon.info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
}

.info-content h4 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.info-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.info-content strong {
  color: var(--text-primary);
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 60px 0;
  margin-bottom: var(--section-gap);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-fast);
}

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

.faq-item[open] {
  background: var(--bg-card-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
}

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

.faq-chevron {
  flex-shrink: 0;
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--border-color);
  gap: 48px;
}

.footer-left {
  display: flex;
  align-items: center;
}

.footer-logo {
  opacity: 0.7;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: center;
}

.footer-logo:hover {
  opacity: 1;
}

.powered-logo {
  height: 24px;
  width: auto;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  position: relative;
}

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

.footer-links li:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 14px;
  background: var(--border-color);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-banner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .stats-section {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .steps-container {
    flex-direction: column;
    align-items: center;
  }
  
  .step-connector {
    padding-top: 0;
    transform: rotate(90deg);
  }
  
  .status-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nav-content {
    padding: 12px 16px;
  }
  
  .logo-text {
    display: none;
  }
  
  .hero-banner {
    padding: 40px 0;
  }
  
  .hero-title {
    font-size: 32px;
  }
  
  .stats-section {
    grid-template-columns: 1fr;
  }
  
  .migration-illustration {
    flex-direction: column;
    gap: 16px;
  }
  
  .migration-arrow {
    transform: rotate(90deg);
  }
  
  .footer {
    flex-direction: column;
    gap: 24px;
    text-align: center;
    padding: 24px 16px;
  }
  
  .footer-left {
    width: 100%;
    justify-content: center;
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-left: 0;
  }
  
  .footer-links li:not(:last-child)::after {
    display: none;
  }
}