/* ========================================
   Nexuscone Landing Page Styles
   Enhanced with animations and interactivity
   ======================================== */

/* CSS Variables */
:root {
  --color-bg: #06080F;
  --color-bg-elevated: #0a0d14;
  --color-bg-card: #0d1117;
  --color-fg: #F5F1E6;
  --color-accent: #C9A84C;
  --color-accent-bright: #d4b35a;
  --color-accent-dim: #C9A84C66;
  --color-accent-subtle: #C9A84C15;
  --color-accent-glow: #C9A84C33;
  --color-fg-muted: #F5F1E6AA;
  --color-fg-dim: #F5F1E677;
  --color-success: #4ade80;
  --color-warning: #facc15;
  --color-info: #60a5fa;
  --color-error: #ef4444;
  
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Onest', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --nav-height: 76px;
  --container-max: 1200px;
  --spacing-unit: 8px;
  
  --transition-fast: 0.15s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset */
*, *::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(--color-fg);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

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

code {
  font-family: var(--font-mono);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(6, 8, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-accent-dim);
  z-index: 100;
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 44px;
  width: auto;
  display: block;
  transition: transform var(--transition-medium);
}

.nav-logo:hover .logo-img {
  transform: scale(1.04);
}

.nav-wordmark {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: -0.01em;
  line-height: 1;
}

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-fg-muted);
  transition: color var(--transition-fast);
  position: relative;
}

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

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

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

.nav-status {
  display: flex;
  align-items: center;
}

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

.status-text {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-fg-muted);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-fg);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ========================================
   Marquee Banner
   ======================================== */
.marquee-banner {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  height: 36px;
  background: var(--color-accent);
  overflow: hidden;
  z-index: 99;
}

.marquee-track {
  display: flex;
  align-items: center;
  height: 100%;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee-item {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-bg);
  white-space: nowrap;
  padding: 0 8px;
}

.marquee-separator {
  color: var(--color-bg);
  opacity: 0.5;
  padding: 0 8px;
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
  padding-top: calc(var(--nav-height) + 36px + 80px);
  padding-bottom: 80px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 60px;
  align-items: center;
}

.chain-section {
  padding: 40px 0 80px;
}

.hero-content {
  max-width: 640px;
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-fg);
  margin-bottom: 24px;
}

.headline-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.headline-line[data-line="1"] { animation-delay: 0.1s; }
.headline-line[data-line="2"] { animation-delay: 0.2s; }
.headline-line[data-line="3"] { animation-delay: 0.3s; }

.headline-line.accent {
  color: var(--color-accent);
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-description {
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-fg-muted);
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeIn 0.6s ease 0.4s forwards;
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  opacity: 0;
  animation: fadeIn 0.6s ease 0.5s forwards;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.1) 50%, transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-accent-glow);
}

.btn-primary:hover {
  background: var(--color-accent-bright);
  transform: translateY(-2px);
  box-shadow: 0 4px 24px var(--color-accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-fg);
  border: 1px solid var(--color-accent-dim);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
  transform: translateY(-2px);
}

.btn-large {
  padding: 14px 28px;
  font-size: 15px;
}

.btn-chain {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-fg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.btn-chain svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}

.btn-chain:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

/* Install Block */
.install-block {
  display: flex;
  align-items: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  padding: 10px 14px;
  gap: 12px;
  transition: border-color var(--transition-fast);
}

.install-block:hover {
  border-color: var(--color-accent);
}

.install-code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-fg);
}

.copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--color-fg-muted);
  background: var(--color-accent-subtle);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  color: var(--color-fg);
  background: var(--color-accent-dim);
}

.copy-btn svg {
  width: 16px;
  height: 16px;
}

.copy-btn .check-icon {
  display: none;
  color: var(--color-success);
}

.copy-btn.copied .copy-icon {
  display: none;
}

.copy-btn.copied .check-icon {
  display: block;
}

/* Network Visualisation */
.network-visualisation {
  position: relative;
  width: 100%;
  height: 400px;
}

.network-container {
  position: relative;
  width: 100%;
  height: 100%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 16px;
  overflow: hidden;
}

#network-canvas {
  width: 100%;
  height: 100%;
}

.network-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: flex;
  gap: 16px;
}

.network-stat {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  background: rgba(6, 8, 15, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
}

.network-stat-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-accent);
}

.network-stat-label {
  font-size: 11px;
  color: var(--color-fg-dim);
}

/* Chain Visualisation */
.chain-visualisation {
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 16px;
  padding: 24px;
  transition: border-color var(--transition-medium);
}

.chain-visualisation:hover {
  border-color: var(--color-accent);
}

.chain-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.chain-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chain-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.chain-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-accent);
  padding: 6px 12px;
  background: var(--color-accent-subtle);
  border-radius: 100px;
}

.status-indicator {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.chain-blocks-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-dim);
}

.chain-blocks-wrapper {
  overflow-x: auto;
  margin: 0 -24px;
  padding: 0 24px 16px;
}

.chain-blocks {
  display: flex;
  gap: 0;
  min-width: min-content;
}

.chain-block {
  flex-shrink: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  min-width: 140px;
  transition: all var(--transition-fast);
}

.chain-block::after {
  content: '';
  position: absolute;
  right: -24px;
  top: 50%;
  width: 24px;
  height: 2px;
  background: var(--color-accent-dim);
}

.chain-block:last-child::after {
  display: none;
}

.chain-block.genesis {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.chain-block.new {
  border-color: var(--color-accent);
  animation: blockPulse 0.5s ease;
}

@keyframes blockPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); box-shadow: 0 0 20px var(--color-accent-glow); }
}

.chain-block.verifying {
  border-color: var(--color-warning);
  animation: verifyPulse 0.3s ease infinite;
}

@keyframes verifyPulse {
  0%, 100% { border-color: var(--color-warning); }
  50% { border-color: var(--color-accent); }
}

.chain-block.verified {
  border-color: var(--color-success);
}

.chain-block.invalid {
  border-color: var(--color-error);
}

.block-index {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-accent);
  font-weight: 600;
}

.block-hash {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-fg);
}

.block-time {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-fg-dim);
}

.block-pulse {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  opacity: 0;
}

.chain-block.genesis .block-pulse,
.chain-block.verified .block-pulse {
  opacity: 1;
}

.chain-controls {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  margin-bottom: 20px;
}

.chain-output-wrapper {
  background: var(--color-bg);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  padding: 12px 16px;
}

.chain-output {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.output-prompt {
  color: var(--color-accent);
}

.chain-output.success .output-text { color: var(--color-success); }
.chain-output.error .output-text { color: var(--color-error); }

/* ========================================
   Stats Bar
   ======================================== */
.stats-bar {
  padding: 48px 0;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-accent-dim);
  border-bottom: 1px solid var(--color-accent-dim);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 4px;
}

.stat-unit {
  font-size: 24px;
  color: var(--color-accent);
}

.stat-label {
  font-size: 14px;
  color: var(--color-fg-dim);
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: 100px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 16px;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-fg);
  margin-bottom: 8px;
}

.section-subheading {
  font-size: 17px;
  color: var(--color-fg-muted);
}

.section-rule {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-dim), transparent);
  margin-bottom: 60px;
}

/* Code Blocks */
.code-block-wrapper {
  margin-bottom: 48px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-accent-dim);
}

.code-block-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-accent-dim);
}

.code-block-dots {
  display: flex;
  gap: 6px;
  margin-right: 16px;
}

.code-block-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent-dim);
}

.code-lang {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-dim);
}

.code-block-body {
  display: flex;
  background: var(--color-bg);
}

.code-line-numbers {
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  background: var(--color-bg-card);
  border-right: 1px solid var(--color-accent-dim);
}

.code-line-numbers span {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-fg-dim);
  padding: 0 16px;
  line-height: 1.7;
  text-align: right;
}

.code-block {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-fg);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 0;
  border-left: 3px solid var(--color-accent);
}

.code-block .kw { color: #f472b6; }
.code-block .fn { color: #60a5fa; }
.code-block .str { color: #4ade80; }
.code-block .comment { color: var(--color-fg-dim); }

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  padding: 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 12px;
  transition: all var(--transition-medium);
  opacity: 0;
  transform: translateY(20px);
}

.step-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.step-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(201, 168, 76, 0.1);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 8px;
}

.step-description {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-fg-muted);
}

.step-description code {
  font-size: 12px;
  padding: 2px 6px;
  background: var(--color-accent-subtle);
  border-radius: 4px;
  color: var(--color-accent);
}

/* ========================================
   Trust Model Section
   ======================================== */
.trust-layout {
  max-width: 720px;
  margin: 0 auto;
}

.trust-stack {
  display: flex;
  flex-direction: column;
}

.trust-tier {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  padding: 28px;
  transition: all var(--transition-medium);
}

.trust-tier:first-child { border-radius: 12px 12px 0 0; }
.trust-tier:last-child { border-radius: 0 0 12px 12px; }

.trust-tier:hover {
  border-color: var(--color-accent);
  z-index: 1;
}

.tier-glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--color-accent-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
  pointer-events: none;
}

.trust-tier:hover .tier-glow {
  opacity: 1;
}

.tier-content {
  position: relative;
}

.tier-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.tier-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-accent);
  border-radius: 50%;
}

.tier-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tier-name {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-fg);
}

.tier-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 4px 10px;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-dim);
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tier-description {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-fg-muted);
  margin-bottom: 16px;
}

.tier-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
}

.indicator-progress {
  width: 100px;
  height: 4px;
  background: var(--color-accent-dim);
  border-radius: 2px;
  overflow: hidden;
}

.indicator-progress.filled {
  background: var(--color-accent);
}

.indicator-bar {
  width: 0%;
  height: 100%;
  background: var(--color-accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.indicator-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-fg-dim);
}

.indicator-icon {
  width: 14px;
  height: 14px;
  color: var(--color-success);
}

.trust-connector {
  position: relative;
  height: 0;
  display: flex;
  justify-content: center;
}

.connector-line {
  position: absolute;
  left: 50%;
  width: 2px;
  height: 0;
  background: var(--color-accent-dim);
}

.connector-pulse {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-left: -4px;
  margin-top: -4px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0;
}

/* Metrics Dashboard */
.metrics-dashboard {
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 16px;
  padding: 24px;
  position: sticky;
  top: calc(var(--nav-height) + 36px + 24px);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-accent-dim);
}

.dashboard-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-fg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dashboard-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-fg-dim);
}

.status-dot.live {
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.metrics-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-accent-dim);
  border-radius: 10px;
  transition: all var(--transition-fast);
}

.metric-card:hover {
  border-color: var(--color-accent);
}

.metric-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-accent-subtle);
  border-radius: 8px;
}

.metric-icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.metric-content {
  flex: 1;
}

.metric-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-fg);
  line-height: 1;
}

.metric-label {
  display: block;
  font-size: 12px;
  color: var(--color-fg-dim);
  margin-top: 4px;
}

.metric-spark {
  height: 32px;
  width: 80px;
  display: flex;
  align-items: flex-end;
  gap: 2px;
}

.metric-spark .bar {
  flex: 1;
  background: var(--color-accent);
  border-radius: 2px 2px 0 0;
  transition: height var(--transition-medium);
}

.metric-bar {
  width: 80px;
  height: 6px;
  background: var(--color-accent-dim);
  border-radius: 3px;
  overflow: hidden;
}

.metric-bar-fill {
  height: 100%;
  background: var(--color-success);
  border-radius: 3px;
  transition: width var(--transition-slow);
}

/* ========================================
   Protocol Flow Section
   ======================================== */
.flow-visualisation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0;
  overflow-x: auto;
  padding: 20px 0;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  flex: 1;
  min-width: 160px;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-medium);
}

.flow-step.visible {
  opacity: 1;
  transform: translateY(0);
}

.flow-step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-bg-card);
  border: 2px solid var(--color-accent-dim);
  border-radius: 16px;
  margin-bottom: 16px;
  transition: all var(--transition-medium);
}

.flow-step:hover .flow-step-icon {
  border-color: var(--color-accent);
  transform: scale(1.05);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

.flow-step-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
}

.flow-step-icon.final {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.flow-step-icon.final svg {
  color: var(--color-bg);
}

.flow-step-content {
  max-width: 140px;
}

.flow-step-number {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.flow-step-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 4px;
}

.flow-step-desc {
  font-size: 12px;
  color: var(--color-fg-dim);
  line-height: 1.5;
}

.flow-arrow {
  position: absolute;
  right: -8px;
  top: 30px;
  color: var(--color-accent-dim);
  opacity: 0.5;
}

.flow-arrow svg {
  width: 20px;
  height: 20px;
}

.flow-step:last-child .flow-arrow {
  display: none;
}

/* ========================================
   CLI Section
   ======================================== */
.cli-demo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.cli-window {
  background: var(--color-bg);
  border: 1px solid var(--color-accent-dim);
  border-radius: 12px;
  overflow: hidden;
}

.cli-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-accent-dim);
}

.cli-dots {
  display: flex;
  gap: 8px;
  margin-right: 16px;
}

.cli-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.cli-dot.red { background: #ff5f57; }
.cli-dot.yellow { background: #febc2e; }
.cli-dot.green { background: #28c840; }

.cli-title {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-fg-dim);
  text-align: center;
}

.cli-body {
  padding: 24px;
  min-height: 280px;
}

.cli-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.cli-prompt {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent);
}

.cli-command {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-fg);
}

.cli-cursor {
  width: 8px;
  height: 18px;
  background: var(--color-fg);
  animation: blink 1s step-end infinite;
}

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

.cli-output {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-fg-muted);
  white-space: pre-wrap;
}

.cli-output .success { color: var(--color-success); }
.cli-output .warning { color: var(--color-warning); }
.cli-output .info { color: var(--color-info); }

.cli-flags {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cli-flag {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 10px;
  text-align: left;
  transition: all var(--transition-fast);
}

.cli-flag:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

.cli-flag.active {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.flag-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cli-flag code {
  font-size: 13px;
  color: var(--color-accent);
}

.flag-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 3px 8px;
  border-radius: 100px;
  text-transform: uppercase;
}

.cli-flag > span {
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-fg-muted);
}

/* ========================================
   Open Core Section
   ======================================== */
.open-core-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
}

.open-core-content {
  max-width: 640px;
}

.prose {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-fg-muted);
  margin-bottom: 20px;
}

.prose code {
  font-size: 13px;
  padding: 2px 6px;
  background: var(--color-accent-subtle);
  border-radius: 4px;
}

.prose-large {
  font-size: 17px;
}

.prose strong {
  color: var(--color-fg);
  font-weight: 600;
}

.licence-badges {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.licence-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.licence-badge:hover {
  border-color: var(--color-accent);
}

.licence-badge svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
}

.licence-badge span {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-fg);
}

/* Repo Card */
.repo-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 16px;
  padding: 24px;
  transition: all var(--transition-medium);
}

.repo-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(201, 168, 76, 0.1);
}

.repo-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.repo-icon {
  width: 48px;
  height: 48px;
  color: var(--color-fg);
}

.repo-info {
  display: flex;
  flex-direction: column;
}

.repo-name {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-fg);
}

.repo-description {
  font-size: 13px;
  color: var(--color-fg-dim);
}

.repo-stats {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--color-accent-dim);
  border-bottom: 1px solid var(--color-accent-dim);
  margin-bottom: 20px;
}

.repo-stat {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-fg-muted);
}

.repo-stat svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
}

.repo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.repo-link:hover {
  background: var(--color-accent-bright);
}

.repo-link svg {
  width: 16px;
  height: 16px;
}

/* ========================================
   Specs Section
   ======================================== */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.spec-card {
  perspective: 1000px;
}

.spec-card-inner {
  background: var(--color-bg-card);
  border: 1px solid var(--color-accent-dim);
  border-radius: 16px;
  padding: 28px;
  transition: all var(--transition-medium);
  transform-style: preserve-3d;
}

.spec-card:hover .spec-card-inner {
  border-color: var(--color-accent);
  transform: translateY(-4px) rotateX(2deg);
  box-shadow: 0 12px 40px rgba(201, 168, 76, 0.15);
}

.spec-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-dim);
  border-radius: 12px;
  margin-bottom: 20px;
  transition: all var(--transition-medium);
}

.spec-card:hover .spec-icon {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.spec-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.spec-card:hover .spec-icon svg {
  color: var(--color-bg);
}

.spec-name {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 10px;
}

.spec-description {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-fg-muted);
  margin-bottom: 20px;
}

.spec-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent);
  transition: all var(--transition-fast);
}

.spec-link:hover {
  gap: 10px;
}

.spec-link svg {
  width: 14px;
  height: 14px;
}

/* ========================================
   CTA Section
   ======================================== */
.section-cta {
  text-align: center;
  padding: 120px 0 80px;
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-elevated));
}

.cta-content {
  max-width: 640px;
  margin: 0 auto;
}

.cta-headline {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-fg);
  margin-bottom: 12px;
}

.cta-description {
  font-size: 17px;
  color: var(--color-fg-muted);
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.cta-note {
  font-size: 14px;
  color: var(--color-fg-dim);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 64px 0 32px;
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-accent-dim);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 280px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.footer-copyright-stacked {
  font-size: 12px;
  color: var(--color-fg-dim);
  margin-top: 10px;
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-fg-dim);
  line-height: 1.6;
}

.footer-links-group h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-fg);
  margin-bottom: 16px;
}

.footer-links-group a {
  display: block;
  font-size: 14px;
  color: var(--color-fg-muted);
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

.footer-links-group a:hover {
  color: var(--color-fg);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--color-accent-dim);
}

.footer-copyright {
  font-size: 13px;
  color: var(--color-fg-dim);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-dim);
  border-radius: 8px;
  color: var(--color-fg-muted);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  color: var(--color-fg);
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .network-visualisation {
    height: 300px;
  }
  
  .trust-layout {
    grid-template-columns: 1fr;
  }
  
  .metrics-dashboard {
    position: static;
  }
  
  .metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
  
  .open-core-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(6, 8, 15, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-accent-dim);
    padding: 16px 24px;
    gap: 16px;
  }

  .nav-links.active {
    display: flex;
  }
  
  .nav-status {
    display: none;
  }

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

  .hero {
    padding-top: calc(var(--nav-height) + 36px + 48px);
    padding-bottom: 48px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: 64px 0;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .stat-value {
    font-size: 28px;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .flow-visualisation {
    flex-direction: column;
    gap: 32px;
  }
  
  .flow-arrow {
    display: none;
  }

  .cli-demo {
    grid-template-columns: 1fr;
  }

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

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

  .chain-controls {
    flex-wrap: wrap;
  }

  .licence-badges {
    flex-direction: column;
  }
}

/* Keyboard focus ring (uses brand gold so it sits on the navy bg) */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Respect users who request reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}