/* 
   Aerospace Design Language (ADL) - Stylesheet
   Aether Orbit - Digital Headquarters
*/

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;1,400&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --bg-primary: #07090e;      /* Deep Space Graphite */
  --bg-secondary: #0c101a;    /* Midnight Blue */
  --bg-surface: rgba(17, 24, 39, 0.6); /* Dark Slate Glassmorphism */
  --bg-surface-solid: #111827;
  
  --text-primary: #f8fafc;    /* Soft White */
  --text-secondary: #94a3b8;  /* Cool Gray */
  --text-muted: #64748b;
  
  --accent-primary: #0077ff;   /* Orbital Blue - Precision & Navigation */
  --accent-secondary: #00f2fe; /* Aurora Cyan - Discovery & Observation */
  --accent-glow: rgba(0, 119, 255, 0.15);
  
  --color-nominal: #10b981;    /* Emerald Green */
  --color-warning: #f59e0b;    /* Amber */
  --color-critical: #ef4444;   /* Deep Crimson */
  --color-info: #0284c7;       /* Blue */
  
  --border-color: rgba(148, 163, 184, 0.12); /* Hairline borders */
  --border-focus: #00f2fe;
  --border-glow: rgba(0, 242, 254, 0.3);

  /* Fonts */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Lora', 'Georgia', serif;

  /* Layout & Spacing */
  --max-width: 1440px;
  --content-width: 1280px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Corner Radius */
  --radius-sm: 4px;
  --radius-button: 6px;
  --radius-card: 10px;
  --radius-panel: 12px;
  --radius-input: 6px;

  /* Shadows (Minimal, Rely on Border Outlines) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.8);
  
  /* Typography Scale */
  --fs-display-xxl: 3.5rem;
  --fs-display-xl: 2.5rem;
  --fs-heading-xl: 2rem;
  --fs-heading-lg: 1.5rem;
  --fs-heading-md: 1.15rem;
  --fs-body-lg: 1.1rem;
  --fs-body-std: 0.95rem;
  --fs-caption: 0.85rem;
  --fs-metadata: 0.75rem;

  --font-scale: 1;
}

/* --- Accessibility Themes & Layout Scales --- */

/* Text Scale Updates */
body.font-lg { --font-scale: 1.15; }
body.font-xl { --font-scale: 1.3; }

/* High Contrast Mode */
body.high-contrast {
  --bg-primary: #000000;
  --bg-secondary: #000000;
  --bg-surface: #000000;
  --bg-surface-solid: #000000;
  --text-primary: #ffffff;
  --text-secondary: #e2e8f0;
  --text-muted: #cbd5e1;
  --accent-primary: #00ff00; /* High viz green */
  --accent-secondary: #00ffff; /* Cyan */
  --border-color: #ffffff;
  --border-focus: #00ff00;
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --accent-glow: transparent;
  --border-glow: transparent;
}

/* Light Mode (Optional Accessibility Alternative) */
body.light-mode {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-surface: rgba(255, 255, 255, 0.8);
  --bg-surface-solid: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent-primary: #0f62fe;
  --accent-secondary: #0d9488;
  --border-color: rgba(15, 23, 42, 0.1);
  --border-focus: #0f62fe;
  --accent-glow: rgba(15, 98, 254, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.08);
}

/* --- Base & Reset --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
  outline: none;
}

html {
  font-size: calc(16px * var(--font-scale));
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
  overflow-y: auto;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.2);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.4);
}

/* --- Layout Containers --- */
.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  width: 100%;
}

.page-section {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--border-color);
}

.page-section:last-of-type {
  border-bottom: none;
}

/* Hide sections for SPA view navigation */
.view-container {
  display: none;
}
.view-container.active {
  display: block;
}

/* --- Custom Loading Screen --- */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #05070a;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

#loading-canvas {
  width: 260px;
  height: 260px;
  margin-bottom: var(--space-md);
}

.loading-logo-group {
  text-align: center;
  transform: translateY(10px);
  animation: slideUpFadeIn 1s forwards 0.3s;
  opacity: 0;
}

.loading-wordmark {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.loading-subtext {
  font-family: var(--font-sans);
  font-size: var(--fs-metadata);
  color: var(--accent-secondary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
}

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

/* --- Typography Styles --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.display-title {
  font-size: var(--fs-display-xl);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: var(--fs-heading-xl);
  margin-bottom: var(--space-xs);
}

.section-subtitle {
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: var(--space-lg);
}

.serif-text {
  font-family: var(--font-serif);
}

.editorial-reading {
  font-family: var(--font-serif);
  font-size: var(--fs-body-lg);
  line-height: 1.7;
  color: var(--text-primary);
  max-width: 68ch;
  margin: 0 auto;
}

.editorial-reading p {
  margin-bottom: var(--space-md);
}

.editorial-reading p:last-child {
  margin-bottom: 0;
}

.section-label {
  font-size: var(--fs-metadata);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-secondary);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  display: block;
}

/* --- Header / Navigation --- */
header.app-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(7, 9, 14, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
}

.logo-icon {
  width: 22px;
  height: 22px;
  stroke: var(--accent-secondary);
  stroke-width: 2.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-text {
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  gap: var(--space-md);
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--fs-caption);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.2s;
  padding: 6px 0;
  position: relative;
  text-transform: uppercase;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

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

.header-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* System Stats Badge */
.header-system-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--color-nominal);
  font-family: monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.header-status-dot {
  width: 6px;
  height: 6px;
  background: var(--color-nominal);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-nominal);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.utc-clock {
  font-family: monospace;
  font-size: 11px;
  color: var(--text-secondary);
  border-left: 1px solid var(--border-color);
  padding-left: var(--space-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 16px;
  border-radius: var(--radius-button);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  text-transform: uppercase;
  gap: 8px;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #ffffff;
  border: 1px solid var(--accent-primary);
}

.btn-primary:hover {
  background-color: #0066dd;
  border-color: #0066dd;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-surface-solid);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--text-secondary);
}

.btn-tertiary {
  background: transparent;
  color: var(--accent-secondary);
  padding: 0;
  font-weight: 700;
}

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

/* --- Form Controls & Range Sliders --- */
.form-group {
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: var(--fs-metadata);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 600;
}

.form-input {
  font-family: var(--font-sans);
  font-size: var(--fs-body-std);
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-input);
  transition: border-color 0.2s;
}

.form-input:focus {
  border-color: var(--accent-primary);
}

/* Custom Range Slider styling for Mission Simulator */
.range-slider-container {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.range-slider-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--border-color);
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-secondary);
  border: 2px solid var(--bg-primary);
  cursor: pointer;
  transition: transform 0.1s;
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* --- Global Alert Banner --- */
.system-alert-banner {
  background: rgba(239, 68, 68, 0.15);
  border-bottom: 1px solid rgba(239, 68, 68, 0.25);
  color: #fca5a5;
  font-size: var(--fs-caption);
  padding: 8px 0;
  text-align: center;
  font-weight: 500;
  display: none; /* Injected by dynamic operations */
}

.alert-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.alert-dot {
  width: 8px;
  height: 8px;
  background: var(--color-critical);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-critical);
  animation: pulse-dot 1.5s infinite;
}

/* --- General Card & Panel Glassmorphism --- */
.glass-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  padding: var(--space-md);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
}

/* --- 1. HOME VIEW --- */
.hero-section {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.3;
}

.hero-content-wrapper {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: rgba(0, 242, 254, 0.06);
  border: 1px solid rgba(0, 242, 254, 0.15);
  color: var(--accent-secondary);
  font-size: var(--fs-metadata);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 6px 12px;
  border-radius: 20px;
  margin-bottom: var(--space-md);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-secondary);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--accent-secondary);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero-desc {
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
}

/* Home Overview & Grid Stats */
.home-overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: calc(-1 * var(--space-xl));
  margin-bottom: var(--space-2xl);
  position: relative;
  z-index: 5;
}

.stat-panel {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-secondary);
  line-height: 1.1;
  margin-bottom: 4px;
  font-family: monospace;
}

.stat-label {
  font-size: var(--fs-caption);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.editorial-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.editorial-intro-svg {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  border-radius: var(--radius-panel);
}

/* --- 2. MISSION CONTROL / TELEMETRY VIEW --- */
.control-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-md);
  height: calc(100vh - 150px);
  min-height: 620px;
}

.control-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
}

.spacecraft-selector-card {
  padding: var(--space-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  cursor: pointer;
  transition: all 0.2s;
}

.spacecraft-selector-card:hover {
  background: rgba(148, 163, 184, 0.05);
}

.spacecraft-selector-card.active {
  border-color: var(--accent-primary);
  background: rgba(0, 119, 255, 0.05);
  box-shadow: 0 0 12px var(--accent-glow);
}

.spacecraft-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.spacecraft-name {
  font-weight: 700;
  font-size: var(--fs-body-std);
}

.spacecraft-type {
  font-size: var(--fs-metadata);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spacecraft-status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-metadata);
  font-weight: 700;
  text-transform: uppercase;
}

.spacecraft-status-badge.nominal { color: var(--color-nominal); }
.spacecraft-status-badge.attention { color: var(--color-warning); }
.spacecraft-status-badge.critical { color: var(--color-critical); }

.control-workspace {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: var(--space-sm);
  height: 100%;
}

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.workspace-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto 1fr;
  gap: var(--space-sm);
  overflow: hidden;
}

/* Quick Metrics Row */
.workspace-metrics-row {
  grid-column: span 3;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.metric-box {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
}

.metric-title {
  font-size: var(--fs-metadata);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: monospace;
  line-height: 1.2;
}

.metric-unit {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 2px;
}

/* Main Dashboard Panel layout */
.telemetry-charts-panel {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  height: 100%;
}

.canvas-chart-wrapper {
  flex-grow: 1;
  background: rgba(7, 9, 14, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  position: relative;
}

.canvas-chart-wrapper canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.system-details-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
  height: 100%;
}

/* Logs and Terminal Panel */
.mission-console-logs {
  background: #04060a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  font-family: monospace;
  font-size: 11px;
  height: 120px;
  overflow-y: auto;
  color: var(--text-secondary);
}

.log-entry {
  margin-bottom: 4px;
  line-height: 1.4;
}

.log-timestamp {
  color: var(--accent-secondary);
  margin-right: 8px;
}

.log-entry.critical-log { color: #fca5a5; }
.log-entry.warning-log { color: var(--color-warning); }

/* --- 3. MISSIONS DIRECTORY VIEW --- */
.directory-filters-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-pill-group {
  display: flex;
  gap: 8px;
}

.filter-pill {
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: var(--fs-caption);
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
}

.filter-pill:hover, .filter-pill.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
}

.missions-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.mission-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.mission-card-media {
  height: 160px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  border-top-left-radius: inherit;
  border-top-right-radius: inherit;
  position: relative;
  overflow: hidden;
}

.mission-card-media svg {
  width: 100%;
  height: 100%;
}

.mission-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 10px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.mission-card-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.mission-card-title {
  font-size: var(--fs-heading-md);
  margin-bottom: 4px;
}

.mission-card-destination {
  font-size: var(--fs-metadata);
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.mission-card-desc {
  color: var(--text-secondary);
  font-size: var(--fs-caption);
  line-height: 1.5;
  margin-bottom: var(--space-md);
  flex-grow: 1;
}

/* --- 4. SATELLITE FLEET & MAP VIEW --- */
.fleet-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-md);
}

.observation-map-wrapper {
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  height: 520px;
  position: relative;
  overflow: hidden;
}

.observation-map-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Mode toggles (Explorer vs Engineer) */
.mode-toggle-group {
  display: inline-flex;
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2px;
}

.mode-toggle-btn {
  background: transparent;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mode-toggle-btn.active {
  background: var(--accent-secondary);
  color: var(--bg-primary);
}

.map-control-overlay {
  position: absolute;
  bottom: var(--space-sm);
  left: var(--space-sm);
  background: rgba(7, 9, 14, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  z-index: 10;
  width: 240px;
}

/* --- 5. ENGINEERING SCHEMATIC EXPLORER --- */
.engineering-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-lg);
  align-items: flex-start;
}

.schematic-viewer-card {
  background: rgba(15, 23, 42, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 480px;
}

.schematic-svg-wrapper {
  width: 100%;
  height: 100%;
  max-width: 440px;
}

/* SVG Interactive Zones */
.blueprint-zone {
  cursor: pointer;
  transition: all 0.3s;
  fill: rgba(0, 119, 255, 0.03);
  stroke: rgba(0, 119, 255, 0.2);
}

.blueprint-zone:hover, .blueprint-zone.active {
  fill: rgba(0, 242, 254, 0.08);
  stroke: var(--accent-secondary);
  filter: drop-shadow(0 0 4px var(--accent-secondary));
}

.engineering-details-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* --- 6. RESEARCH & DATA VIEW --- */
.research-portal-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.data-table-container {
  overflow-x: auto;
  margin-top: var(--space-sm);
}

.adl-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--fs-caption);
}

.adl-table th {
  background: var(--bg-surface-solid);
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: var(--fs-metadata);
  letter-spacing: 0.05em;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border-color);
}

.adl-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.adl-table tr:hover {
  background: rgba(148, 163, 184, 0.02);
}

/* Technical vs Plain Language Switcher */
.summary-switcher {
  display: flex;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 4px;
  margin-bottom: var(--space-sm);
}

.summary-tab-btn {
  flex: 1;
  background: transparent;
  color: var(--text-secondary);
  font-size: var(--fs-caption);
  padding: 8px;
  cursor: pointer;
  font-weight: 600;
  border-radius: var(--radius-input);
  text-transform: uppercase;
  transition: all 0.2s;
}

.summary-tab-btn.active {
  background: var(--accent-primary);
  color: #ffffff;
}

/* --- 7. EDUCATION & SIMULATOR VIEW --- */
.simulator-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-lg);
}

.simulator-controls {
  display: flex;
  flex-direction: column;
}

.simulator-monitor {
  background: #04060a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  height: 480px;
}

.simulator-canvas {
  width: 100%;
  height: 100%;
  background: #030508;
  display: block;
  border-radius: var(--radius-card);
}

.simulator-overlay-metrics {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(7, 9, 14, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  display: grid;
  grid-template-columns: auto auto;
  gap: var(--space-xs) var(--space-md);
  font-family: monospace;
  font-size: 11px;
}

/* --- AI Mission Assistant Chat Panel --- */
#ai-assistant-drawer {
  position: fixed;
  bottom: 0;
  right: var(--space-xl);
  width: 380px;
  height: 480px;
  background: #07090f;
  border: 1px solid var(--border-color);
  border-top-left-radius: var(--radius-panel);
  border-top-right-radius: var(--radius-panel);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  transform: translateY(calc(100% - 44px));
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-lg);
}

#ai-assistant-drawer.open {
  transform: translateY(0);
}

.drawer-header {
  height: 44px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  border-top-left-radius: inherit;
  border-top-right-radius: inherit;
}

.drawer-title {
  font-family: monospace;
  font-weight: 700;
  font-size: 11px;
  color: var(--accent-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
}

.drawer-toggle-icon {
  width: 14px;
  height: 14px;
  stroke: var(--text-secondary);
  transition: transform 0.3s;
}

#ai-assistant-drawer.open .drawer-toggle-icon {
  transform: rotate(180deg);
}

.drawer-messages {
  flex-grow: 1;
  padding: var(--space-sm);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  font-family: monospace;
  font-size: 11px;
}

.assistant-msg {
  align-self: flex-start;
  background: rgba(148, 163, 184, 0.05);
  border: 1px solid var(--border-color);
  padding: 8px var(--space-sm);
  border-radius: var(--radius-sm);
  max-width: 90%;
  color: #e2e8f0;
}

.user-msg {
  align-self: flex-end;
  background: rgba(0, 119, 255, 0.1);
  border: 1px solid rgba(0, 119, 255, 0.25);
  padding: 8px var(--space-sm);
  border-radius: var(--radius-sm);
  max-width: 90%;
  color: #93c5fd;
}

.drawer-input-container {
  display: flex;
  border-top: 1px solid var(--border-color);
  background: #04060a;
}

.drawer-input {
  flex-grow: 1;
  background: transparent;
  color: var(--text-primary);
  font-family: monospace;
  font-size: 11px;
  padding: 12px;
  outline: none;
}

.drawer-send-btn {
  background: transparent;
  color: var(--accent-secondary);
  padding: 0 var(--space-sm);
  cursor: pointer;
  font-family: monospace;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
}

/* --- Modals & Overlays --- */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal.active {
  opacity: 1;
  pointer-events: all;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(3, 5, 8, 0.85);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: #0a0e17;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-panel);
  width: 90%;
  max-width: 680px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalScaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalScaleIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-close-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal-body {
  padding: var(--space-lg);
}

/* Accessibility settings overlay */
.accessibility-menu {
  position: absolute;
  top: 60px;
  right: var(--space-md);
  background: #0a0e17;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--space-md);
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  z-index: 1002;
  width: 260px;
  box-shadow: var(--shadow-lg);
}

.accessibility-menu.active {
  display: flex;
}

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

.theme-selector-btn {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.theme-selector-btn.active {
  background: var(--accent-secondary);
  color: var(--bg-primary);
  border-color: var(--accent-secondary);
}

/* --- Footer --- */
footer.app-footer {
  background: #04060a;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
  font-size: var(--fs-caption);
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  line-height: 1.6;
}

.footer-column h4 {
  font-size: var(--fs-metadata);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-xs);
}

.footer-column a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-column a:hover {
  color: var(--accent-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: monospace;
  font-size: 10px;
}

/* --- Media Queries (Responsive) --- */
@media (max-width: 1024px) {
  .control-grid {
    grid-template-columns: 1fr;
    height: auto;
  }
  .control-sidebar {
    flex-direction: row;
    overflow-x: auto;
    height: auto;
  }
  .spacecraft-selector-card {
    min-width: 220px;
  }
  .workspace-telemetry-grid {
    grid-template-columns: 1fr;
  }
  .telemetry-charts-panel, .workspace-metrics-row {
    grid-column: span 1;
  }
  .missions-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .fleet-layout, .engineering-layout, .simulator-layout {
    grid-template-columns: 1fr;
  }
  .schematic-viewer-card {
    height: 380px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none; /* Mobile menu can toggle in production, keep clean here */
  }
  .missions-list-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: var(--fs-display-xl);
  }
  .home-overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .editorial-intro-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   MOBILE OPTIMIZATION
   ============================================================ */

/* Touch target minimums & tap highlight */
@media (pointer: coarse) {
  .btn, .nav-link, .filter-pill, .mode-toggle-btn, .summary-tab-btn,
  .theme-selector-btn, .settings-toggle, .drawer-send-btn,
  a, button {
    min-height: 44px;
    min-width: 44px;
    -webkit-tap-highlight-color: transparent;
  }
  .btn {
    padding: 12px 20px;
    font-size: 15px;
  }
  .nav-link {
    padding: 12px 8px;
  }
  .filter-pill {
    padding: 10px 16px;
  }
  body {
    cursor: auto;
    -webkit-text-size-adjust: 100%;
  }
  html, body {
    overflow-x: hidden;
    overscroll-behavior-x: none;
  }
}

/* Mobile menu 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;
  -webkit-tap-highlight-color: transparent;
}
.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; }

  /* Stack hero overview to 2 columns then 1 */
  .home-overview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .control-sidebar {
    gap: 8px;
    padding: 8px;
  }
  .page-section {
    padding-top: 32px;
    padding-bottom: 32px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  /* AI Assistant Drawer full-width on mobile */
  #ai-assistant-drawer {
    width: 100% !important;
    max-width: 100vw;
  }
  .modal-content {
    width: 95vw;
    max-width: 95vw;
    margin: 16px;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.2;
  }
  .hero-desc {
    font-size: 0.95rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .home-overview-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .missions-list-grid {
    grid-template-columns: 1fr;
  }
  .stat-panel {
    padding: 12px;
  }
  .filter-pill-group {
    flex-wrap: wrap;
  }
  .workspace-header {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .directory-filters-bar {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .spacecraft-selector-card {
    min-width: unset;
    width: 100%;
  }
}

/* Reduced Motion Settings */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-delay: 0s !important;
    animation-duration: 0s !important;
    transition-duration: 0s !important;
  }
}