:root {
  /* Backgrounds */
  --bg-void:        #020408;  /* Deepest black — page background */
  --bg-dark:        #060d18;  /* Card backgrounds */
  --bg-surface:     #0a1628;  /* Elevated surfaces */
  --bg-glass:       rgba(10, 22, 40, 0.7); /* Glass morphism */

  /* Primary Brand */
  --kortana-blue:   #0ea5e9;  /* Primary accent — electric blue */
  --kortana-cyan:   #22d3ee;  /* Secondary accent */
  --kortana-purple: #8b5cf6;  /* Tertiary accent */
  --kortana-gold:   #f59e0b;  /* Genesis tier gold */

  /* Tier Colors */
  --tier-genesis:   #f59e0b;  /* Gold — Genesis Node */
  --tier-early:     #22d3ee;  /* Cyan — Early Node */
  --tier-full:      #0ea5e9;  /* Blue — Full Node */
  --tier-premium:   #8b5cf6;  /* Purple — Premium Node */

  /* Text */
  --text-primary:   #f0f9ff;  /* Near white */
  --text-secondary: #94a3b8;  /* Muted */
  --text-accent:    #0ea5e9;  /* Blue accent */

  /* Borders */
  --border-dim:     rgba(14, 165, 233, 0.1);
  --border-glow:    rgba(14, 165, 233, 0.4);

  /* Glows */
  --glow-blue:      0 0 40px rgba(14, 165, 233, 0.3);
  --glow-gold:      0 0 40px rgba(245, 158, 11, 0.3);
  --glow-purple:    0 0 40px rgba(139, 92, 246, 0.3);
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg-void);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

h1, h2, .hero-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
}

.mono, .address {
  font-family: 'JetBrains Mono', monospace;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Background Animations */
#starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.nebula-blob {
  position: fixed;
  top: 40%;
  left: 50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--kortana-blue) 0%, var(--kortana-purple) 100%);
  filter: blur(100px);
  opacity: 0.2;
  border-radius: 50%;
  z-index: -1;
  animation: float 20s infinite alternate linear;
}

@keyframes float {
  from { transform: translate(-50%, -50%) rotate(0deg) scale(1); }
  to { transform: translate(-30%, -30%) rotate(360deg) scale(1.2); }
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  backdrop-filter: blur(10px);
  background: rgba(2, 4, 8, 0.8);
  border-bottom: 1px solid var(--border-dim);
  z-index: 1000;
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo img {
  height: 48px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-top: 100px;
}

.badge-pill {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px border-glow solid;
  border-radius: 9999px;
  font-weight: 700;
  color: var(--kortana-blue);
  font-size: 0.8rem;
  margin-bottom: 2rem;
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(3rem, 10vw, 6rem);
  line-height: 0.95;
  margin-bottom: 1.5rem;
}

.hero-title .line {
  display: block;
}

.gradient-text {
  background: linear-gradient(90deg, var(--kortana-blue), var(--kortana-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 3rem;
}

.hero-ctas {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-connect {
    background: var(--bg-glass);
    border: 1px solid var(--border-dim);
    color: white;
    padding: 0.6rem 1.4rem;
}

.btn-connect.connected {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--kortana-blue);
    color: var(--kortana-blue);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.2);
}

.btn-primary {
  background: linear-gradient(90deg, var(--kortana-blue), var(--kortana-cyan));
  color: white;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  transform: translateY(-4px) scale(1.02);
  filter: brightness(1.1);
}

.btn-ghost {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glow);
}

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

.btn-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--kortana-blue);
}

.live-stats-bar {
  display: flex;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-dim);
  border-radius: 12px;
  padding: 1.5rem 3rem;
  width: fit-content;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 2rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: 'Syne', sans-serif;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-divider {
  width: 1px;
  background: var(--border-dim);
}

/* Section Common */
.section {
    padding: 120px 0;
}

.section-label {
    color: var(--kortana-blue);
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: 0.2rem;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 2rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.centered-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px auto;
}

/* About Section Visual */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.feature-pills {
    list-style: none;
    margin-top: 2rem;
}

.feature-pills li {
    padding: 1rem;
    background: rgba(14, 165, 233, 0.05);
    border-radius: 12px;
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    border: 1px solid var(--border-dim);
}

.rewards-anim-container {
    position: relative;
    height: 300px;
    background: var(--bg-dark);
    border-radius: 20px;
    border: 1px solid var(--border-glow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.node-icon {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 800;
    font-family: 'Syne', sans-serif;
    z-index: 2;
}

.network {
    background: var(--kortana-blue);
    margin-bottom: 100px;
}

.wallet {
    background: var(--bg-surface);
    border: 1px solid var(--border-glow);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.dnr-ticking {
    color: var(--kortana-cyan);
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

/* Tiers Grid */
.tiers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.tier-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-dim);
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
}

.tier-card:hover {
    transform: translateY(-10px);
    border-color: var(--border-glow);
    background: var(--bg-surface);
}

.tier-badge {
    position: absolute;
    top: -12px;
    right: 30px;
    padding: 4px 12px;
    background: var(--kortana-blue);
    color: white;
    font-weight: 800;
    font-size: 0.75rem;
    border-radius: 4px;
}

.tier-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tier-genesis .tier-icon { color: var(--tier-genesis); }
.tier-early .tier-icon { color: var(--tier-early); }
.tier-full .tier-icon { color: var(--tier-full); }
.tier-premium .tier-icon { color: var(--tier-premium); }

.tier-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.tier-price {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.tier-divider {
    height: 1px;
    background: var(--border-dim);
    margin: 1.5rem 0;
}

.tier-reward {
    margin-bottom: 2rem;
}

.reward-main {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.reward-annual {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.tier-features {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.tier-features li {
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.supply-tracker {
    margin-bottom: 2rem;
}

.supply-bar {
    height: 8px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.supply-fill {
    height: 100%;
    background: var(--kortana-blue);
    border-radius: 4px;
}

.supply-info {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: right;
}

.btn-tier {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-dim);
    color: white;
}

.tier-genesis:hover { box-shadow: var(--glow-gold); }
.tier-early:hover { box-shadow: 0 0 40px rgba(34, 211, 238, 0.3); }
.tier-full:hover { box-shadow: var(--glow-blue); }
.tier-premium:hover { box-shadow: var(--glow-purple); }

.tier-card:hover .btn-tier {
    background: var(--kortana-blue);
    border-color: var(--kortana-blue);
}

/* Calculator */
.calc-card {
    padding: 3rem;
}

.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-dim);
    border-radius: 24px;
}

.calc-inputs {
    grid-template-columns: 1fr 1fr;
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.input-group label {
    display: block;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.input-group select {
    width: 100%;
    padding: 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-glow);
    color: white;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
}

.calc-results {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.result-box {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-dim);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.res-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.res-value.highlight {
    color: var(--kortana-cyan);
}

.res-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Steps */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.step-card {
    position: relative;
}

.step-number {
    font-size: 4rem;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    color: rgba(14, 165, 233, 0.1);
    position: absolute;
    top: -20px;
    left: -10px;
    z-index: -1;
}

.step-content h3 {
    margin-bottom: 1rem;
    color: var(--kortana-blue);
}

.address-copy {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-dark);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-dim);
}

.address {
    font-size: 0.8rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
}

.protocol-badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--kortana-blue);
    color: white;
    font-size: 0.75rem;
    font-weight: 800;
    border-radius: 4px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--glow-blue);
}

.wallet-option {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-dim);
    padding: 1.5rem;
    border-radius: 16px;
    transition: all 0.3s;
}

.wallet-option:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--kortana-blue);
}

.btn-copy {
    background: var(--kortana-blue);
    color: white;
    border: none;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
}

/* Form */
.form-container {
    max-width: 640px;
    margin: 0 auto;
    padding: 3rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1.25rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--kortana-blue);
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.2);
}

.radio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-dim);
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    background: linear-gradient(90deg, var(--kortana-blue), var(--kortana-cyan));
    color: white;
    font-size: 1.125rem;
    padding: 1.25rem;
}

/* MetaMask Card */
.metamask-card {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem;
}

.metamask-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.mm-logo {
    height: 60px;
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-dim);
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 1rem 2rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.tab-btn.active {
    color: var(--kortana-blue);
    border-bottom: 2px solid var(--kortana-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.network-details {
    list-style: none;
    margin-bottom: 2rem;
}

.network-details li {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.btn-metamask {
    width: 100%;
    background: #f6851b;
    color: white;
    font-weight: 700;
}

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

.faq-item {
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    background: var(--bg-glass);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    font-weight: 600;
}

.faq-answer {
    padding: 1.5rem;
    background: var(--bg-dark);
    display: none;
    color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

#successMessage {
    text-align: center;
    padding: 2rem 0;
}

.success-icon {
    font-size: 4rem;
    color: var(--kortana-blue);
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(14, 165, 233, 0.4));
}

#successMessage h3 {
    font-family: 'Syne', sans-serif;
    font-size: 2rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #fff, var(--kortana-blue));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#successMessage p {
    color: var(--text-dim);
    line-height: 1.6;
}

/* Footer */
footer {
    padding: 80px 0 40px 0;
    background: #010204;
    border-top: 1px solid var(--border-dim);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin-top: 1rem;
    color: var(--text-secondary);
    max-width: 300px;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: block;
    text-decoration: none;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-dim);
    padding-top: 40px;
}

.disclaimer {
    max-width: 500px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .split-layout {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .calc-inputs {
        grid-template-columns: 1fr;
    }
    .calc-results {
        grid-template-columns: 1fr 1fr;
    }
    .hero-title {
        font-size: 3rem;
    }
}