/*
  Nexus Grid - Infrastructure Design Language (IDL)
  Editorial-style operations control center design system
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Lora:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
  /* Colors */
  --bg-primary: #0a0c0f;      /* Deep Graphite */
  --bg-secondary: #10141a;    /* Steel Gray */
  --bg-surface: #171d26;      /* Soft Slate */
  --accent-electric: #2a6aff; /* Electric Blue (Transmission & Stability) */
  --accent-green: #10b981;    /* Renewable Green (Sustainability) */
  --text-primary: #f8fafc;    /* Warm White */
  --text-secondary: #94a3b8;  /* Cool Gray */
  --border-color: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.15);
  
  /* Status Colors */
  --status-success: #10b981;  /* Emerald */
  --status-warning: #f59e0b;  /* Amber */
  --status-critical: #ef4444; /* Deep Red */
  
  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Lora', Georgia, Cambria, "Times New Roman", Times, serif;
  
  /* Grid and Spacing */
  --grid-gap: 24px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  /* Micro-dot background pattern */
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 0),
    radial-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 0);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.editorial-title {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
}

p.editorial-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

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

/* Grid System */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

/* Layout Structure */
header.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 12, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 64px;
}

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

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

.brand-logo {
  width: 28px;
  height: 28px;
  display: block;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 0;
  list-style: none;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: rgba(16, 20, 26, 0.4);
  overflow: hidden;
  counter-reset: nav-counter;
}

.nav-links li {
  border-right: 1px solid var(--border-color);
}

.nav-links li:last-child {
  border-right: none;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 10px 18px;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  position: relative;
  transition: all var(--transition-normal);
  counter-increment: nav-counter;
}

.nav-link::before {
  content: "[" counter(nav-counter, decimal-leading-zero) "] ";
  font-family: monospace;
  color: rgba(255, 255, 255, 0.25);
  margin-right: 8px;
  transition: color var(--transition-normal);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: transparent;
  transition: all var(--transition-normal);
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

.nav-link:hover::before {
  color: rgba(255, 255, 255, 0.50);
}

.nav-link.active {
  color: var(--text-primary);
  background-color: rgba(42, 106, 255, 0.05);
}

.nav-link.active::before {
  color: var(--accent-electric);
}

.nav-link.active::after {
  background-color: var(--accent-electric);
  box-shadow: 0 -2px 10px var(--accent-electric), 0 0 4px var(--accent-electric);
}

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

/* Status Indicator */
.system-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  background-color: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: 9999px;
  color: var(--accent-green);
}

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

@keyframes pulse-green {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.status-dot.warning {
  background-color: var(--status-warning);
  animation: pulse-warning 2s infinite;
}

@keyframes pulse-warning {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

.status-dot.critical {
  background-color: var(--status-critical);
  animation: pulse-critical 2s infinite;
}

@keyframes pulse-critical {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

/* Accessibility Control Panel */
.a11y-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 4px;
  padding: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.a11y-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.a11y-menu {
  position: absolute;
  top: 60px;
  right: 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  width: 240px;
  display: none;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  z-index: 110;
}

.a11y-menu.show {
  display: flex;
}

.a11y-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.a11y-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Toggle Switch */
.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  transition: .2s;
  border-radius: 20px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 12px;
  width: 12px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .2s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-electric);
}

input:checked + .slider:before {
  transform: translateX(16px);
  background-color: var(--text-primary);
}

/* Layout Main Content */
main {
  padding-bottom: 96px;
}

.view-section {
  display: none;
}

.view-section.active {
  display: block;
}

/* Operations Room Panel Styling */
.panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(42, 106, 255, 0.3), transparent);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  padding-bottom: 12px;
}

.panel-title {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title svg {
  width: 16px;
  height: 16px;
  stroke: var(--accent-electric);
  stroke-width: 2;
  fill: none;
}

/* Telemetry & Counters */
.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.telemetry-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: 4px;
}

.telemetry-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}

.telemetry-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-family: var(--font-sans);
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.telemetry-unit {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.telemetry-change {
  font-size: 0.75rem;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.change-up { color: var(--accent-green); }
.change-down { color: var(--status-critical); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 10px 18px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: var(--font-sans);
}

.btn-primary {
  background-color: var(--accent-electric);
  color: var(--text-primary);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background-color: #1a56e0;
  box-shadow: 0 0 15px rgba(42, 106, 255, 0.25);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.07);
  border-color: var(--border-hover);
}

.btn-secondary.active {
  background-color: rgba(42, 106, 255, 0.08);
  border-color: var(--accent-electric);
  color: var(--text-primary);
  box-shadow: 0 0 10px rgba(42, 106, 255, 0.15);
}

.btn-tertiary {
  background: none;
  color: var(--text-secondary);
  border: none;
  padding: 6px 12px;
}

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

/* Hero Section */
.hero {
  padding: 80px 0 60px 0;
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-electric);
  margin-bottom: 16px;
  display: inline-block;
  border-bottom: 1px solid var(--accent-electric);
  padding-bottom: 4px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  line-height: 1.1;
  font-weight: 400;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

/* Hero Telemetry Display */
.hero-telemetry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border-top: 1px dashed var(--border-color);
  padding-top: 24px;
}

.hero-tel-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-tel-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.hero-tel-val {
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-sans);
}

/* Control Room Mockup Graphics */
.hero-visual {
  position: relative;
  aspect-ratio: 16/10;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
}

/* Ambient glow & lines */
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(rgba(42, 106, 255, 0.03) 50%, transparent 50%),
    linear-gradient(90deg, rgba(42, 106, 255, 0.03) 50%, transparent 50%);
  background-size: 20px 20px;
  pointer-events: none;
}

.visual-monitor {
  width: 100%;
  height: 100%;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.monitor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: monospace;
  font-size: 0.6875rem;
  color: rgba(255, 255, 255, 0.3);
}

.monitor-grid {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.grid-line-glow {
  position: absolute;
  width: 80%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-electric), transparent);
  animation: scanning 3s linear infinite;
  opacity: 0.3;
}

@keyframes scanning {
  0% { transform: translateY(-80px); }
  100% { transform: translateY(80px); }
}

.radar-circle {
  width: 150px;
  height: 150px;
  border: 1px solid rgba(42, 106, 255, 0.15);
  border-radius: 50%;
  position: relative;
}

.radar-circle::after {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 152px;
  height: 152px;
  border: 1px solid transparent;
  border-top-color: var(--accent-electric);
  border-radius: 50%;
  animation: rotate-clockwise 4s linear infinite;
}

@keyframes rotate-clockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Introduction Paragraph */
.intro-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(16, 20, 26, 0.4);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: center;
}

.intro-img {
  aspect-ratio: 1;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.25rem;
  position: relative;
}

.intro-img::after {
  content: 'COORDINATION';
  position: absolute;
  bottom: 16px;
  font-family: var(--font-sans);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.25);
}

.intro-content {
  padding-left: 24px;
  border-left: 1px solid var(--border-color);
}

/* Operational View - Main Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 24px;
  margin-top: 32px;
}

/* SVG Map */
.map-canvas-container {
  width: 100%;
  height: 480px;
  background-color: #0b0d10;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.map-node {
  cursor: pointer;
  transition: filter var(--transition-fast);
}

.map-node:hover {
  filter: drop-shadow(0 0 6px var(--accent-electric));
}

.map-link {
  stroke: rgba(42, 106, 255, 0.2);
  stroke-dasharray: 4, 4;
  transition: stroke var(--transition-normal);
}

.map-link.active {
  stroke: var(--accent-electric);
  animation: dash 30s linear infinite;
}

.map-link.active-green {
  stroke: var(--accent-green);
  animation: dash 30s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -1000;
  }
}

.map-tooltip {
  position: absolute;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-primary);
  pointer-events: none;
  display: none;
  z-index: 10;
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
  font-family: var(--font-sans);
}

.map-tooltip-header {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  color: var(--text-secondary);
}

/* Sidebar lists */
.dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.status-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 0 4px 4px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.status-item.success { border-left-color: var(--status-success); }
.status-item.warning { border-left-color: var(--status-warning); }
.status-item.critical { border-left-color: var(--status-critical); }

.status-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-val {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Power Generation Page */
.generation-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.gen-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.gen-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.gen-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.12);
}

.gen-card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 16px;
}

.gen-icon {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--accent-electric);
  stroke-width: 1.5;
}

.gen-icon.green {
  stroke: var(--accent-green);
}

.gen-type {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-primary);
}

.gen-stat {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 12px;
}

.gen-val {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 4px;
  font-family: var(--font-sans);
}

.gen-status-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  background-color: rgba(255, 255, 255, 0.04);
}

/* Journey of a Kilowatt-Hour */
.journey-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 40px;
  margin-top: 32px;
}

.journey-progress {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-bottom: 48px;
}

.journey-progress::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.05);
  z-index: 1;
}

.journey-progress-bar {
  position: absolute;
  top: 12px;
  left: 0;
  height: 2px;
  background-color: var(--accent-electric);
  z-index: 1;
  transition: width var(--transition-slow);
}

.journey-step-node {
  width: 26px;
  height: 26px;
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 2;
  cursor: pointer;
  transition: var(--transition-normal);
}

.journey-step-node.active {
  border-color: var(--accent-electric);
  background-color: var(--bg-surface);
  box-shadow: 0 0 10px rgba(42, 106, 255, 0.4);
}

.journey-step-node.completed {
  border-color: var(--accent-electric);
  background-color: var(--accent-electric);
}

.journey-content-pane {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  min-height: 280px;
  align-items: center;
}

.journey-info h4 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 400;
  margin-bottom: 16px;
}

.journey-info p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.journey-diagram-box {
  background-color: #0b0d10;
  border: 1px solid var(--border-color);
  aspect-ratio: 16/10;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Substation Layers Model */
.substation-layout {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 24px;
  margin-top: 32px;
}

.substation-viewer {
  background-color: #0b0d10;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  height: 480px;
  position: relative;
  overflow: hidden;
}

.layer-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.layer-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 14px 20px;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-normal);
  position: relative;
  border-left: 3px solid transparent;
}

.layer-btn:hover {
  background-color: rgba(255,255,255,0.02);
  border-color: var(--border-hover);
}

.layer-btn.active {
  border-color: var(--border-color);
  border-left-color: var(--accent-electric);
  background-color: rgba(42, 106, 255, 0.05);
  box-shadow: inset 3px 0 0 var(--accent-electric), 0 4px 15px rgba(0, 0, 0, 0.2);
}

.layer-btn-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.layer-btn-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Resilience Simulator */
.resilience-dashboard {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 24px;
  margin-top: 32px;
}

.resilience-viewports {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.simulation-window {
  background-color: #0b0d10;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  height: 380px;
  position: relative;
  overflow: hidden;
}

.simulation-terminal {
  background-color: #050608;
  border: 1px solid var(--border-color);
  font-family: monospace;
  font-size: 0.75rem;
  padding: 16px;
  border-radius: 4px;
  height: 180px;
  overflow-y: auto;
  color: #38bdf8;
  box-shadow: inset 0 0 10px rgba(0,0,0,0.8);
}

.terminal-line {
  margin-bottom: 6px;
  line-height: 1.4;
}

.terminal-line.error { color: var(--status-critical); }
.terminal-line.success { color: var(--accent-green); }
.terminal-line.warning { color: var(--status-warning); }

.simulation-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.scenario-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.scenario-card:hover {
  background-color: rgba(255,255,255,0.02);
}

.scenario-card.active {
  border-color: var(--status-critical);
}

.scenario-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.scenario-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Diurnal Renewable Integration Slider */
.diurnal-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 32px;
  margin-top: 32px;
}

.slider-timeline {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-input {
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
  appearance: none;
}

.timeline-input::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--accent-electric);
  cursor: pointer;
  border: 2px solid var(--text-primary);
  box-shadow: 0 0 10px rgba(42, 106, 255, 0.5);
  transition: var(--transition-fast);
}

.timeline-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0 8px;
}

/* Diurnal dynamic graphics */
.diurnal-graphic-panel {
  background-color: #0b0d10;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  height: 280px;
  margin-bottom: 24px;
  position: relative;
}

/* Open Science / Research Hub styling */
.editorial-grid {
  display: grid;
  grid-template-columns: 8fr 4fr;
  gap: 64px;
  margin-top: 48px;
}

.research-paper {
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-color);
}

.paper-meta {
  display: flex;
  gap: 16px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.paper-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 16px;
}

.paper-abstract {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.paper-flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin: 32px 0;
  text-align: center;
}

.flow-step {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 12px 8px;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
}

.flow-step.active {
  border-color: var(--accent-electric);
  color: var(--text-primary);
  background-color: rgba(42, 106, 255, 0.05);
}

/* AI Assistant Drawer */
.ai-assistant-drawer {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
}

.assistant-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--accent-electric);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  transition: transform var(--transition-fast);
}

.assistant-btn:hover {
  transform: scale(1.05);
}

.assistant-box {
  position: absolute;
  bottom: 60px;
  right: 0;
  width: 360px;
  height: 480px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.7);
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.assistant-box.show {
  display: flex;
}

.assistant-header {
  padding: 16px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.assistant-header h4 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.assistant-body {
  flex-grow: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.8125rem;
  max-width: 85%;
  line-height: 1.4;
}

.msg.ai {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  align-self: flex-start;
  color: var(--text-primary);
}

.msg.user {
  background-color: var(--accent-electric);
  align-self: flex-end;
  color: var(--text-primary);
}

.assistant-input-area {
  padding: 12px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 8px;
}

.assistant-input {
  flex-grow: 1;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 0.8125rem;
  outline: none;
}

.assistant-input:focus {
  border-color: var(--accent-electric);
}

/* Personal Workspaces view */
.workspace-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 28px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: rgba(16, 20, 26, 0.4);
  width: fit-content;
  overflow: hidden;
  counter-reset: ws-counter;
}

.workspace-tab {
  background: none;
  border: none;
  border-right: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 10px 20px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  counter-increment: ws-counter;
}

.workspace-tab:last-child {
  border-right: none;
}

.workspace-tab::before {
  content: "WS-" counter(ws-counter, decimal) " ";
  font-family: monospace;
  opacity: 0.3;
  margin-right: 6px;
}

.workspace-tab:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

.workspace-tab.active {
  color: var(--text-primary);
  background-color: rgba(42, 106, 255, 0.05);
}

.workspace-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-electric);
  box-shadow: 0 -2px 8px var(--accent-electric);
}

.workspace-layout {
  display: none;
}

.workspace-layout.active {
  display: block;
}

/* Career Page Modules */
.career-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.career-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 220px;
}

.career-role {
  font-size: 1.125rem;
  font-family: var(--font-serif);
  margin-bottom: 12px;
}

.career-dept {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-electric);
}

/* Footer style resembling bibliography */
footer.app-footer {
  border-top: 1px solid var(--border-color);
  background-color: #080a0d;
  padding: 64px 0;
  color: var(--text-secondary);
  font-size: 0.8125rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
}

.footer-col h5 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

/* Accessibility Modes overrides */
body.contrast-mode {
  --bg-primary: #000000;
  --bg-secondary: #000000;
  --bg-surface: #121212;
  --text-primary: #ffffff;
  --text-secondary: #e2e8f0;
  --border-color: #ffffff;
  --border-hover: #ffffff;
}

body.contrast-mode .panel,
body.contrast-mode .telemetry-card,
body.contrast-mode .journey-content-pane,
body.contrast-mode .msg.ai,
body.contrast-mode .layer-btn,
body.contrast-mode .career-card {
  border: 1px solid #ffffff;
  background-color: #000000;
}

body.reduced-motion * {
  animation: none !important;
  transition: none !important;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .hero-grid, .dashboard-grid, .substation-layout, .resilience-dashboard, .editorial-grid {
    grid-template-columns: 1fr;
  }
  
  .col-8, .col-6, .col-4, .col-3 {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .nav-links {
    display: none; /* In a real app we'd have a mobile drawer, but let's make it responsive */
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   MOBILE OPTIMIZATION
   ============================================================ */
@media (pointer: coarse) {
  .btn, .nav-link, .tab-btn, .filter-btn, a, button {
    min-height: 44px;
    min-width: 44px;
    -webkit-tap-highlight-color: transparent;
  }
  .btn { padding: 14px 22px; }
  body { cursor: auto; -webkit-text-size-adjust: 100%; }
  html, body { overflow-x: hidden; overscroll-behavior-x: none; }
}

/* Mobile hamburger */
.mobile-menu-btn {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: transparent; border: none;
  cursor: pointer; flex-direction: column; gap: 5px;
}
.mobile-menu-btn span {
  display: block; width: 22px; height: 2px;
  background: var(--text-primary);
  transition: transform 0.3s, opacity 0.2s;
  border-radius: 1px;
}
.mobile-menu-btn.open span:first-child { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:last-child { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: 24px;
    z-index: 999;
    gap: 8px;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links.open li a { font-size: 1.1rem; padding: 14px 0; display: block; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.75rem; line-height: 1.15; }
  .hero-desc { font-size: 0.95rem; }
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .grid-12, .col-8, .col-6, .col-4, .col-3 { grid-column: span 12 !important; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding-left: 16px; padding-right: 16px; }
  .page-section { padding-top: 32px; padding-bottom: 32px; }
  .section-title { font-size: 1.35rem; }
  .card { padding: 16px; }
  .dashboard-grid { gap: 16px; }
}