/* ============================================
   ARTEMIS 3 - Mission to the Moon
   Color Palette inspired by NASA Artemis
   ============================================ */

:root {
  /* NASA Artemis Colors */
  --nasa-blue: #0B3D91;
  --nasa-red: #FC3D21;
  --artemis-orange: #FF6B35;
  --deep-space: #0D1B2A;
  --lunar-blue: #1E88E5;
  --moon-gray: #C0C0C0;

  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #B0B8C4;
  --text-muted: #6B7280;

  /* Backgrounds */
  --bg-dark: #0D1B2A;
  --bg-card: #1B2838;
  --bg-card-hover: #243447;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--artemis-orange);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 27, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--nasa-blue), var(--lunar-blue));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--space-sm) 0;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--artemis-orange);
  transition: width var(--transition-normal);
}

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

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

.lang-switch {
  display: flex;
  gap: var(--space-xs);
  background: var(--bg-card);
  padding: var(--space-xs);
  border-radius: 8px;
}

.lang-switch a {
  padding: var(--space-xs) var(--space-sm);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.lang-switch a.active {
  background: var(--nasa-blue);
  color: var(--text-primary);
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-dark);
    padding: var(--space-md);
    gap: var(--space-md);
    display: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-links.active {
    display: flex;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  padding-top: calc(var(--space-xl) + 80px);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(30, 136, 229, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 40%),
    var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 160px 120px, rgba(255,255,255,0.3), transparent);
  background-size: 200px 200px;
  animation: stars 100s linear infinite;
}

@keyframes stars {
  from { transform: translateY(0); }
  to { transform: translateY(-200px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 107, 53, 0.2);
  color: var(--artemis-orange);
  padding: var(--space-xs) var(--space-md);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero h1 span {
  background: linear-gradient(135deg, var(--artemis-orange), var(--nasa-red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.countdown-item {
  background: var(--bg-card);
  padding: var(--space-md) var(--space-lg);
  border-radius: 12px;
  min-width: 100px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.countdown-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--lunar-blue);
  line-height: 1;
}

.countdown-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: var(--space-xs);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--nasa-blue), var(--lunar-blue));
  color: var(--text-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(30, 136, 229, 0.3);
  color: var(--text-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  border-color: var(--artemis-orange);
  color: var(--artemis-orange);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--nasa-blue), var(--artemis-orange));
  border-radius: 2px;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--bg-card);
  border-radius: 16px;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
  transform: translateY(-5px);
  background: var(--bg-card-hover);
  border-color: rgba(255, 107, 53, 0.3);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-card), var(--nasa-blue));
}

.card-content {
  padding: var(--space-lg);
}

.card-date {
  font-size: 0.75rem;
  color: var(--artemis-orange);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

.card-source {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-source a {
  color: var(--lunar-blue);
}

.btn-read-source {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(135deg, var(--nasa-blue), var(--lunar-blue));
  color: var(--text-primary);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-normal);
  margin-top: var(--space-sm);
}

.btn-read-source:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(30, 136, 229, 0.3);
  color: var(--text-primary);
}

/* Mission Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.stat-item {
  text-align: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--artemis-orange);
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--nasa-blue), var(--artemis-orange));
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }
}

.timeline-item {
  display: flex;
  justify-content: flex-end;
  padding-right: 50%;
  position: relative;
  margin-bottom: var(--space-xl);
}

.timeline-item:nth-child(even) {
  justify-content: flex-start;
  padding-right: 0;
  padding-left: 50%;
}

@media (max-width: 768px) {
  .timeline-item,
  .timeline-item:nth-child(even) {
    padding-left: 50px;
    padding-right: 0;
    justify-content: flex-start;
  }
}

.timeline-content {
  background: var(--bg-card);
  padding: var(--space-lg);
  border-radius: 12px;
  max-width: 400px;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--artemis-orange);
  border-radius: 50%;
  top: 20px;
  border: 4px solid var(--bg-dark);
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -60px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -60px;
}

@media (max-width: 768px) {
  .timeline-item .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: -40px;
    right: auto;
  }
}

.timeline-date {
  color: var(--lunar-blue);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.timeline-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.timeline-status {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.timeline-status.completed {
  background: rgba(76, 175, 80, 0.2);
  color: #4CAF50;
}

.timeline-status.in-progress {
  background: rgba(255, 193, 7, 0.2);
  color: #FFC107;
}

.timeline-status.upcoming {
  background: rgba(30, 136, 229, 0.2);
  color: var(--lunar-blue);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* Footer */
.footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: 1rem;
}

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

.footer-section li {
  margin-bottom: var(--space-sm);
}

.footer-section a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-section a:hover {
  color: var(--artemis-orange);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--lunar-blue);
}

/* News List */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.news-item {
  display: flex;
  gap: var(--space-lg);
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.news-item:hover {
  transform: translateX(5px);
  border-color: rgba(255, 107, 53, 0.3);
}

.news-image {
  width: 200px;
  min-height: 150px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-card), var(--nasa-blue));
  flex-shrink: 0;
}

.news-content {
  padding: var(--space-lg);
  flex: 1;
}

@media (max-width: 600px) {
  .news-item {
    flex-direction: column;
  }

  .news-image {
    width: 100%;
    height: 150px;
  }
}

/* Mission Page */
.mission-hero {
  padding: calc(var(--space-xl) + 80px) var(--space-md) var(--space-xl);
  background:
    linear-gradient(180deg, rgba(13, 27, 42, 0.9), var(--bg-dark)),
    radial-gradient(ellipse at 30% 20%, rgba(11, 61, 145, 0.3) 0%, transparent 50%);
}

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

@media (max-width: 768px) {
  .mission-content {
    grid-template-columns: 1fr;
  }
}

.vehicle-card {
  background: var(--bg-card);
  padding: var(--space-lg);
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.vehicle-icon {
  font-size: 4rem;
  margin-bottom: var(--space-md);
}

/* About Page */
.about-content {
  max-width: 800px;
  margin: 0 auto;
}

.disclaimer {
  background: rgba(252, 61, 33, 0.1);
  border: 1px solid rgba(252, 61, 33, 0.3);
  border-radius: 12px;
  padding: var(--space-lg);
  margin-top: var(--space-lg);
}

.disclaimer h3 {
  color: var(--nasa-red);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-orange { color: var(--artemis-orange); }
.text-blue { color: var(--lunar-blue); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Loading Animation */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-xl);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bg-card);
  border-top-color: var(--artemis-orange);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--nasa-blue);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--lunar-blue);
}

/* ============================================
   News Layout: Sidebar + Content
   ============================================ */

.news-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.news-sidebar {
  position: sticky;
  top: 100px;
}

/* Calendar Widget */
.calendar-widget {
  background: var(--bg-card);
  border-radius: 12px;
  padding: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.calendar-widget h3 {
  font-size: 1rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.calendar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.calendar-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-sm);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

.calendar-link:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.calendar-link.active {
  background: var(--nasa-blue);
  color: var(--text-primary);
}

.calendar-link .count {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 10px;
  min-width: 24px;
  text-align: center;
}

.calendar-link.active .count {
  background: rgba(255, 255, 255, 0.2);
}

/* Active Filter Bar */
.active-filter {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(11, 61, 145, 0.2);
  border: 1px solid rgba(30, 136, 229, 0.3);
  border-radius: 8px;
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.filter-clear {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.filter-clear:hover {
  border-color: var(--artemis-orange);
  color: var(--artemis-orange);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.page-btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--artemis-orange);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-current {
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* No News Message */
.no-news {
  text-align: center;
  padding: var(--space-xl);
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Mobile: Calendar horizontal */
@media (max-width: 768px) {
  .news-layout {
    grid-template-columns: 1fr;
  }

  .news-sidebar {
    position: static;
  }

  .calendar-list {
    flex-direction: row;
    overflow-x: auto;
    gap: var(--space-sm);
    padding-bottom: var(--space-sm);
    -webkit-overflow-scrolling: touch;
  }

  .calendar-link {
    white-space: nowrap;
    flex-shrink: 0;
    padding: var(--space-sm) var(--space-md);
  }
}