/* ==========================================================================
   EARTH ANALOGS — Light-Mode Space Exploration Design System
   Specification: earth-analogs-space-exploration-design
   Built for NASA Space Apps & Planetary Science Research
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;450;500;600;650;700&family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@500;600;650;700&display=swap');

/* --- Root Design Tokens --- */
:root {
  /* Brand & Planetary Colors */
  --color-primary: #078FE0;
  --color-primary-dark: #0566A8;
  --color-primary-light: #E7F5FF;
  --color-primary-hover: #067BC2;
  --color-primary-focus: #43B5F5;

  /* Ink & Typography */
  --color-ink: #101820;
  --color-ink-muted: #536273;
  --color-ink-subtle: #71849A;
  --color-ink-tertiary: #9AA8B7;

  /* Surfaces & Canvas (Light-Mode Dominant) */
  --color-canvas: #FFFFFF;
  --color-canvas-soft: #F5F9FC;
  --color-surface-1: #FFFFFF;
  --color-surface-2: #EDF5FA;
  --color-surface-3: #DCEAF3;

  /* Hairlines & Structural Borders */
  --color-hairline: #DCE5EC;
  --color-hairline-strong: #B7C9D8;

  /* Mars Accents (Restrained & Secondary) */
  --color-accent-orange: #E87532;
  --color-accent-orange-light: #FFF0E7;

  /* Inverse Surfaces (Deep Space Navy - reserved for CTA & Footer) */
  --color-inverse-canvas: #071B32;
  --color-inverse-surface: #0D2947;
  --color-inverse-ink: #FFFFFF;

  /* Typography Families */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 9px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-xxl: 26px;
  --radius-pill: 9999px;
  --radius-full: 9999px;

  /* Spacing Scale */
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 104px;

  /* Shadows (Subtle, crisp, scientific) */
  --shadow-sm: 0 1px 3px rgba(16, 24, 32, 0.05);
  --shadow-md: 0 4px 14px rgba(7, 143, 224, 0.08);
  --shadow-lg: 0 12px 32px rgba(7, 27, 50, 0.09);
  --shadow-hover: 0 8px 24px rgba(7, 143, 224, 0.14);

  /* Transitions */
  --transition-fast: 160ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 240ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-canvas);
  color: var(--color-ink);
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0px;
  color: var(--color-ink);
  background-color: var(--color-canvas);
  overflow-x: hidden;
}

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

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

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

/* --- Exact Typography Hierarchy (from Specification) --- */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(44px, 6vw, 76px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -3px;
  color: var(--color-ink);
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.5vw, 58px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -2.2px;
  color: var(--color-ink);
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 650;
  line-height: 1.12;
  letter-spacing: -1.4px;
  color: var(--color-ink);
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--color-ink);
}

.card-title {
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: -0.2px;
  color: var(--color-ink);
}

.subhead {
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 450;
  line-height: 1.65;
  letter-spacing: 0px;
  color: var(--color-ink-muted);
}

.body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0px;
  color: var(--color-ink);
}

.body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0px;
  color: var(--color-ink);
}

.body-sm {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: 0px;
  color: var(--color-ink-muted);
}

.caption {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.5px;
  color: var(--color-ink-subtle);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow-orange {
  color: var(--color-accent-orange);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0px;
}

/* --- Container & Layout --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
  position: relative;
}

.section-soft {
  background-color: var(--color-canvas-soft);
}

.section-surface-2 {
  background-color: var(--color-surface-2);
}

.section-surface-3 {
  background-color: var(--color-surface-3);
}

.dark-section {
  background-color: var(--color-inverse-canvas);
  color: var(--color-inverse-ink);
}

.dark-section .display-xl,
.dark-section .display-lg,
.dark-section .display-md,
.dark-section .headline,
.dark-section .card-title,
.dark-section .body-lg,
.dark-section .body {
  color: #FFFFFF;
}

.dark-section .subhead,
.dark-section .body-sm {
  color: #B7C9D8;
}

/* --- Buttons (Specification Specs) --- */
.button-primary,
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: 0px;
  border-radius: var(--radius-md);
  padding: 14px 24px;
  min-height: 48px;
  border: none;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  white-space: nowrap !important;
  flex-shrink: 0;
}

.button-primary:hover,
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 4px 16px rgba(7, 143, 224, 0.28);
  transform: translateY(-1px);
}

.button-primary:active,
.btn-primary:active {
  transform: translateY(0);
}

.button-primary:focus-visible,
.btn-primary:focus-visible {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 2px;
}

.button-secondary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: #FFFFFF;
  color: var(--color-primary-dark) !important;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: 0px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary);
  padding: 13px 23px;
  min-height: 48px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap !important;
  flex-shrink: 0;
}

.button-secondary:hover,
.btn-secondary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary) !important;
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.button-dark,
.btn-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-inverse-canvas);
  color: #FFFFFF !important;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: 0px;
  border-radius: var(--radius-md);
  padding: 14px 24px;
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap !important;
  flex-shrink: 0;
}

.button-dark:hover,
.btn-dark:hover {
  background-color: var(--color-inverse-surface);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* --- Cards --- */
.feature-card {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  color: var(--color-ink);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-hairline-strong);
}

.mission-card {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  padding: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.mission-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-hairline-strong);
}

/* --- Section 1: Navigation --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-hairline);
  height: 76px;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

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

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.brand-title-group {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--color-ink);
  line-height: 1.1;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.5px;
  color: var(--color-primary);
  font-weight: 600;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.2vw, 16px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item a {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-ink-muted);
  position: relative;
  padding: 8px 0;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.nav-mobile-actions {
  display: none;
}

.nav-item a:hover {
  color: var(--color-primary);
}

.nav-item a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav-item a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-pill);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

.nav-action-signin,
.nav-action-workbench,
.nav-action-atlas {
  white-space: nowrap !important;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-action-signin span,
.nav-action-workbench span,
.nav-action-atlas span {
  white-space: nowrap !important;
  display: inline-block;
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-ink);
  background: var(--color-canvas-soft);
  border: 1px solid var(--color-hairline);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-menu-btn:hover {
  background: #EAF3FA;
  border-color: var(--color-primary);
}

.mobile-menu-btn[aria-expanded="true"] .icon-hamburger {
  display: none;
}

.mobile-menu-btn[aria-expanded="true"] .icon-close {
  display: block !important;
}

/* --- Section 2: Hero Section (Cinematic Space Video Background + Panoramic Open Space) --- */
.hero-section {
  position: relative;
  min-height: calc(100vh - 76px);
  width: 100%;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #030812;
  border-bottom: 1px solid var(--color-hairline);
  padding: 60px 0 80px;
}

/* Background Space Video (Full-Width Bleed, 189457-885804464_medium.mp4) */
.hero-space-video-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.hero-space-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.95; /* Pure, vibrant visibility of the space video across full screen */
}

/* Subtle dark aerospace scrim ensuring high typographic legibility on left while keeping right open */
.hero-space-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(3, 8, 18, 0.92) 0%,
    rgba(3, 8, 18, 0.74) 38%,
    rgba(3, 8, 18, 0.22) 65%,
    rgba(3, 8, 18, 0.0) 85%
  );
  z-index: 1;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Clean Professional Eyebrow Pill Badge (Matches Image 3) */
.hero-eyebrow-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: 9999px;
  background: #FFFFFF;
  border: 1.5px solid #7BC5F8;
  color: #0566A8;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25), 0 0 12px rgba(7, 143, 224, 0.2);
  width: fit-content;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-bottom: 4px;
}

.hero-eyebrow-pill .eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #078FE0;
  display: inline-block;
  box-shadow: 0 0 8px rgba(7, 143, 224, 0.8);
  flex-shrink: 0;
}

/* Open right column allowing the panoramic cosmic video to be appreciated without clutter */
.hero-empty-space {
  min-height: 480px;
  width: 100%;
  pointer-events: none;
}

.hero-eyebrow-clean {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #43B5F5;
  margin-bottom: 4px;
}

.pro-icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.hero-title {
  color: #FFFFFF;
}

.hero-title .highlight-blue {
  color: #43B5F5;
}

.hero-subhead {
  color: #DCEAF3;
  max-width: 540px;
  font-size: 18px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.hero-section .button-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF !important;
  border: 1px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero-section .button-secondary:hover {
  background: rgba(255, 255, 255, 0.24);
  border-color: #43B5F5;
  color: #43B5F5 !important;
}

.hero-meta-title {
  color: #FFFFFF !important;
}

.hero-meta-desc {
  color: #B7C9D8 !important;
}

/* 3D Celestial Canvas Container (Pure, Photorealistic, Uncluttered Viewport) */
.hero-3d-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
}

.hero-eyes-container {
  position: relative;
  width: 100%;
  height: 540px;
  border-radius: var(--radius-xl);
  background: radial-gradient(circle at 60% 40%, rgba(15, 42, 72, 0.95) 0%, rgba(7, 27, 50, 0.98) 75%, #051424 100%);
  border: 1px solid rgba(7, 143, 224, 0.25);
  box-shadow: 0 24px 60px rgba(7, 27, 50, 0.22), 0 0 50px rgba(7, 143, 224, 0.15);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

.hero-eyes-container:active {
  cursor: grabbing;
}

#heroEyesCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Outside Planet Switch Dock (Pro-Icons, Glassmorphic Pill) */
.planet-switch-bar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px rgba(16, 24, 32, 0.08);
}

.planet-switch-bar .planet-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--color-ink-muted);
  border: none;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.planet-switch-bar .planet-pill-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.planet-switch-bar .planet-pill-btn.active {
  background: var(--color-primary);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(7, 143, 224, 0.35);
}

/* HUD Controls on Canvas */
.eyes-hud-header {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  z-index: 10;
}

.eyes-hud-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: #71849A;
  background: rgba(7, 27, 50, 0.75);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.eyes-hud-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #43B5F5;
  background: rgba(7, 27, 50, 0.75);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(7, 143, 224, 0.3);
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #078FE0;
  box-shadow: 0 0 8px #078FE0;
}

.eyes-selector-pills {
  position: absolute;
  top: 56px;
  left: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  z-index: 10;
}

.planet-pill-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: #B7C9D8;
  background: rgba(7, 27, 50, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.planet-pill-btn:hover {
  background: rgba(7, 143, 224, 0.2);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.planet-pill-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary-focus);
  color: #FFFFFF;
  box-shadow: 0 0 12px rgba(7, 143, 224, 0.4);
}

.eyes-telemetry-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(7, 27, 50, 0.82);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  z-index: 10;
}

.telemetry-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.4;
  color: #E7F5FF;
}

.telemetry-target-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  background: rgba(7, 143, 224, 0.3);
  color: #43B5F5;
  border: 1px solid rgba(7, 143, 224, 0.5);
  white-space: nowrap !important;
  flex-shrink: 0;
}

/* --- Section 3: Scientific Introduction --- */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.intro-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.stats-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.stat-item {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--color-ink-muted);
  text-transform: uppercase;
}

.stat-desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-ink-subtle);
  line-height: 1.4;
}

.intro-image-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16 / 11;
  background-color: var(--color-surface-2);
}

.intro-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.intro-image-frame:hover img {
  transform: scale(1.03);
}

.image-annotation-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.annotation-text {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-ink);
}

/* --- Section 4: Exploration Areas (6 Editorial Cards) --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.exploration-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.exploration-card {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.exploration-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary-focus);
}

.card-image-box {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  background-color: var(--color-surface-2);
  overflow: hidden;
}

.card-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.exploration-card:hover .card-image-box img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(16, 24, 32, 0.78);
  backdrop-filter: blur(6px);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 12px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 650;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 10px;
  color: var(--color-primary-hover);
}

/* --- Section 5: Missions and Research --- */
.missions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.mission-feature {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.mission-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-hairline-strong);
}

.mission-media {
  position: relative;
  width: 100%;
  height: 240px;
  background-color: var(--color-surface-2);
  overflow: hidden;
}

.mission-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.mission-feature:hover .mission-media img {
  transform: scale(1.04);
}

.mission-status-pill {
  position: absolute;
  top: 14px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(7, 27, 50, 0.85);
  backdrop-filter: blur(6px);
  color: #43B5F5;
  border: 1px solid rgba(7, 143, 224, 0.4);
}

.mission-details {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mission-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-hairline);
}

.meta-chip {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-chip-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-ink-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.meta-chip-val {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-ink);
}

/* --- Section 6: Earth, Moon and Mars (3 Distinct Planetary Visual Areas) --- */
.planetary-trio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.planetary-col {
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
}

.planetary-col:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Specific thematic borders & accents per planet */
.planetary-col.col-earth {
  border-top: 4px solid var(--color-primary);
}

.planetary-col.col-earth:hover {
  border-color: var(--color-primary);
}

.planetary-col.col-moon {
  border-top: 4px solid #71849A;
}

.planetary-col.col-moon:hover {
  border-color: #536273;
}

.planetary-col.col-mars {
  border-top: 4px solid var(--color-accent-orange);
}

.planetary-col.col-mars:hover {
  border-color: var(--color-accent-orange);
}

.planetary-visual-header {
  position: relative;
  height: 220px;
  overflow: hidden;
  background-color: var(--color-surface-2);
}

.planetary-visual-header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.planetary-col:hover .planetary-visual-header img {
  transform: scale(1.05);
}

.planet-symbol-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(16, 24, 32, 0.85);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 650;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.planetary-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-grow: 1;
}

.analog-site-box {
  background: var(--color-canvas-soft);
  border: 1px solid var(--color-hairline);
  padding: 14px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}

.analog-site-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 650;
  color: var(--color-ink);
}

.analog-site-metric {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary-dark);
}

/* --- Section 7: Discoveries and Scientific News (Peer-Reviewed Citations) --- */
.discoveries-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}

.featured-article-card {
  background: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.featured-article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.featured-article-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.featured-article-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.citation-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.citation-card {
  background: var(--color-surface-1);
  border: 1px solid var(--color-hairline);
  padding: 20px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.citation-card:hover {
  transform: translateX(4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.citation-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.citation-title {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.4;
  color: var(--color-ink);
}

.citation-doi {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-ink-subtle);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.citation-doi:hover {
  color: var(--color-primary);
}

/* --- Section 8: Final Climax CTA --- */
.climax-cta-section {
  background: radial-gradient(circle at 80% 20%, #0F325A 0%, #071B32 70%);
  padding: 120px 0;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.climax-cta-section::after {
  content: '';
  position: absolute;
  top: 0;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  border: 1px dashed rgba(7, 143, 224, 0.2);
  pointer-events: none;
}

.climax-box {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  position: relative;
  z-index: 2;
}

.climax-headline {
  color: #FFFFFF;
}

.climax-subhead {
  color: #B7C9D8;
  max-width: 680px;
}

/* --- Section 9: Footer --- */
.site-footer {
  background-color: var(--color-inverse-canvas);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 80px 0 40px;
  color: #B7C9D8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #9AA8B7;
  max-width: 320px;
}

.footer-cockpit-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #43B5F5;
  background: rgba(7, 143, 224, 0.15);
  border: 1px solid rgba(7, 143, 224, 0.35);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  width: fit-content;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-cockpit-link:hover {
  background: rgba(7, 143, 224, 0.28);
  color: #FFFFFF;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 650;
  color: #FFFFFF;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: #9AA8B7;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: #71849A;
}

/* --- Responsive Adjustments --- */
@media (max-width: 1260px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-eyes-container {
    height: 480px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
  }
  .exploration-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .planetary-trio-grid {
    grid-template-columns: 1fr;
  }
  .discoveries-container {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  /* Tablet & Mobile Navigation */
  .nav-menu {
    display: none;
  }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-hairline);
    padding: 20px 24px 28px;
    gap: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    z-index: 1000;
  }
  .nav-menu.open .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding-bottom: 8px;
  }
  .nav-menu.open .nav-item a {
    display: block;
    font-size: 15px;
    font-weight: 500;
    padding: 6px 0;
  }
  .nav-menu.open .nav-mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-top: 14px;
    margin-top: 6px;
    border-top: 1px solid var(--color-hairline);
  }
  .mobile-drawer-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .nav-actions .nav-action-signin,
  .nav-actions .nav-action-atlas {
    display: none !important;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 64px;
  }
  .stats-ribbon {
    grid-template-columns: repeat(2, 1fr);
  }
  .exploration-grid {
    grid-template-columns: 1fr;
  }
  .missions-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-eyes-container {
    height: 380px;
  }
  .eyes-selector-pills {
    top: 48px;
  }
  .eyes-telemetry-overlay {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .nav-actions .nav-action-workbench {
    display: none !important;
  }
  .brand-tagline {
    display: none !important;
  }
  .hero-headline {
    font-size: 32px !important;
    line-height: 1.15 !important;
  }
  .hero-subtitle {
    font-size: 15px !important;
  }
  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 12px;
  }
  .hero-cta-group .button-primary,
  .hero-cta-group .button-secondary {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .stats-ribbon {
    grid-template-columns: 1fr;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* Accessibility: respect prefers-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;
  }
}

/* =========================================================================
   ANIMATIONS & MOVEMENT ENGINE (High-Fidelity Aerospace Interactions)
   ========================================================================= */

@keyframes dotPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 10px rgba(7, 143, 224, 0.9), 0 0 4px #078FE0;
  }
  50% {
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(7, 143, 224, 1), 0 0 8px #43B5F5;
  }
}

@keyframes heroFadeUp {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hudProgressPulse {
  0% { width: 45%; }
  50% { width: 82%; }
  100% { width: 45%; }
}

/* Eyebrow Pill Glow Animation (Matches user reference) */
.hero-eyebrow-pill {
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-eyebrow-pill .eyebrow-dot {
  animation: dotPulse 2.4s ease-in-out infinite;
}

/* =========================================================================
   HERO TITLE KINETIC ANIMATION ("FROM EARTH TO THE MOON AND MARS.")
   ========================================================================= */

@keyframes titleWordReveal {
  0% {
    opacity: 0;
    transform: translateY(32px) rotateX(-22deg);
    filter: blur(8px);
  }
  65% {
    opacity: 1;
    filter: blur(0px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
    filter: blur(0px);
  }
}

@keyframes moonAuraGlow {
  0%, 100% {
    text-shadow: 0 0 16px rgba(67, 181, 245, 0.45),
                 0 0 32px rgba(7, 143, 224, 0.25);
    transform: translateY(0);
  }
  50% {
    text-shadow: 0 0 28px rgba(67, 181, 245, 0.95),
                 0 0 54px rgba(7, 143, 224, 0.6),
                 0 0 80px rgba(67, 181, 245, 0.35);
    transform: translateY(-2px);
  }
}

@keyframes marsAuraGlow {
  0%, 100% {
    text-shadow: 0 0 16px rgba(232, 117, 50, 0.45),
                 0 0 32px rgba(232, 117, 50, 0.25);
    transform: translateY(0);
  }
  50% {
    text-shadow: 0 0 28px rgba(232, 117, 50, 0.95),
                 0 0 54px rgba(232, 117, 50, 0.6),
                 0 0 80px rgba(255, 160, 102, 0.35);
    transform: translateY(-2px);
  }
}

.animated-title {
  perspective: 1000px;
  display: flex;
  flex-wrap: wrap;
  gap: 0 16px;
  row-gap: 6px;
}

.animated-title .title-word {
  display: inline-block;
  opacity: 0;
  animation: titleWordReveal 0.85s cubic-bezier(0.16, 1, 0.3, 1) calc(0.18s + var(--i, 0) * 0.08s) forwards;
  will-change: transform, opacity, filter;
}

.animated-title .glow-moon {
  color: #43B5F5 !important;
  animation: titleWordReveal 0.85s cubic-bezier(0.16, 1, 0.3, 1) calc(0.18s + var(--i, 0) * 0.08s) forwards,
             moonAuraGlow 4.5s ease-in-out infinite calc(0.9s + var(--i, 0) * 0.08s);
}

.animated-title .glow-mars {
  color: var(--color-accent-orange) !important;
  animation: titleWordReveal 0.85s cubic-bezier(0.16, 1, 0.3, 1) calc(0.18s + var(--i, 0) * 0.08s) forwards,
             marsAuraGlow 4.5s ease-in-out infinite calc(1.2s + var(--i, 0) * 0.08s);
}

.hero-subhead {
  animation: heroFadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.65s both;
}

.hero-cta-group {
  animation: heroFadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.8s both;
}

/* Scroll-Driven Reveal Animation */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Card Motion & Depth */
.exploration-card, .planetary-col, .mission-feature {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.4s ease;
  will-change: transform, box-shadow;
}

.exploration-card:hover, .planetary-col:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(7, 27, 50, 0.12), 0 0 20px rgba(7, 143, 224, 0.08);
}

.card-image-box img, .planetary-visual-header img, .mission-media img {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.exploration-card:hover .card-image-box img,
.planetary-col:hover .planetary-visual-header img,
.mission-feature:hover .mission-media img {
  transform: scale(1.04);
}

/* Dynamic Navbar Elevation */
.site-nav {
  transition: background-color 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-nav.nav-scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 20px rgba(7, 27, 50, 0.08);
  border-bottom-color: rgba(7, 143, 224, 0.2);
}

/* =========================================================================
   ADDITIONAL MOVEMENT & INTERACTIVE PARTICLES
   ========================================================================= */

/* Global Scroll Progress Bar */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #078FE0 0%, #43B5F5 60%, #E87532 100%);
  box-shadow: 0 0 10px rgba(7, 143, 224, 0.8), 0 0 4px #43B5F5;
  z-index: 9999;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* Metric Counter Completion Bounce */
@keyframes numPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.14); color: #078FE0; }
  100% { transform: scale(1); }
}

.count-completed {
  display: inline-block;
  animation: numPop 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Section Header Accent Line Expansion */
.heading-accent-line {
  width: 0px;
  height: 3px;
  background: linear-gradient(90deg, #078FE0, #43B5F5);
  border-radius: 2px;
  margin-top: 16px;
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-header.is-visible .heading-accent-line {
  width: 56px;
}

/* Button Shimmer Sheen */
@keyframes btnShine {
  0% { left: -100%; }
  22%, 100% { left: 160%; }
}

.button-primary {
  position: relative;
  overflow: hidden;
}

.button-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: skewX(-20deg);
  animation: btnShine 4.5s infinite;
  pointer-events: none;
}

/* Elevated Hover Borders */
.exploration-card:hover, .planetary-col:hover, .mission-feature:hover {
  border-color: rgba(7, 143, 224, 0.45);
}