:root {
  --primary-bg: #03081a; /* أزرق ليلي داكن */
  --secondary-bg: #121931;
  --text-color: #e0e6f0;
  --accent-color: #00aaff; /* أزرق سماوي */
  --accent-hover: #0088cc;
  --silver-color: #c0c0c0;
  --card-bg: #091024;
  --border-color: #2a3557;
  --font-family: 'Tajawal', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--primary-bg);
  color: var(--text-color);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  color: var(--text-color);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 10px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--accent-color);
}

.cta-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 700;
  transition: background-color 0.3s ease, transform 0.3s ease;
  border: 2px solid var(--accent-color);
}

.cta-button:hover {
  background-color: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
}

/* Header */
.site-header {
  background-color: rgba(3, 8, 26, 0.8);
  padding: 15px 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

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

.logo a {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 25px;
}

.main-nav a {
  color: var(--silver-color);
  font-weight: 700;
  padding: 5px 0;
  position: relative;
}

.main-nav a.active,
.main-nav a:hover {
  color: #fff;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  right: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

.main-nav a:hover::after, .main-nav a.active::after {
  width: 100%;
  right: auto;
  left: 0;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

/* Main Content */
main {
  padding-top: 80px; /* Space for fixed header */
}

/* Hero Section */
.hero {
  height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: linear-gradient(rgba(3, 8, 26, 0.7), rgba(3, 8, 26, 0.9)), url('https://images.unsplash.com/photo-1534796636912-3b95b3ab5986?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1771&q=80');
  background-size: cover;
  background-position: center;
  color: #fff;
}

.hero-content {
  animation: fadeInDown 1s ease-out;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 15px;
  text-shadow: 0 0 15px rgba(0, 170, 255, 0.5);
}

.hero p {
  font-size: 1.4rem;
  margin-bottom: 30px;
  color: var(--silver-color);
}

/* Latest News */
.latest-news {
  padding: 80px 0;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.news-card {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 170, 255, 0.1);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-content h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: #fff;
}

.card-content p {
  margin-bottom: 20px;
  color: var(--silver-color);
  flex-grow: 1;
}

.card-content a {
  font-weight: 700;
  align-self: flex-start;
}

/* Featured Categories */
.featured-categories {
  padding: 80px 0;
  background-color: var(--secondary-bg);
}

.categories-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.category-card {
  position: relative;
  height: 300px;
  border-radius: 10px;
  overflow: hidden;
  color: #fff;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--border-color);
}

.category-card img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.category-card:hover img {
  transform: scale(1.1);
}

.category-overlay {
  position: relative;
  z-index: 2;
  background: linear-gradient(to top, rgba(3, 8, 26, 0.9) 0%, transparent 100%);
  width: 100%;
  padding: 30px;
}

.category-overlay h3 {
  font-size: 2rem;
  transform: translateY(10px);
  transition: transform 0.3s ease;
}

.category-card:hover .category-overlay h3 {
  transform: translateY(0);
  color: var(--accent-color);
}

/* Generic Page Header */
.page-header {
  padding: 60px 0;
  background: var(--secondary-bg);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 { font-size: 3rem; margin-bottom: 10px; }
.page-header p { font-size: 1.2rem; color: var(--silver-color); }

.content-page { padding: 80px 0; }

/* Celestial Bodies Page */
.celestial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.celestial-card {
  background-color: var(--card-bg);
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  text-align: center;
   transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.celestial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 170, 255, 0.1);
}

.celestial-card img { border-radius: 8px; margin-bottom: 20px; aspect-ratio: 16/10; object-fit: cover; }
.celestial-card h3 { color: #fff; margin-bottom: 10px; font-size: 1.4rem; }
.celestial-card p { color: var(--silver-color); }

/* News Page */
.news-list { display: flex; flex-direction: column; gap: 40px; }
.news-list-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 30px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  align-items: center;
}

.news-list-item img { width: 100%; height: 100%; object-fit: cover; }
.news-list-content { padding: 20px; }
.news-date { color: var(--silver-color); font-size: 0.9rem; display: block; margin-bottom: 10px; }
.news-list-item h3 { font-size: 1.5rem; color: #fff; margin-bottom: 10px; }
.read-more { font-weight: 700; margin-top: 15px; display: inline-block; }

/* Gallery Page */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 15px;
}

.gallery-item {
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
  filter: brightness(1.2);
}

/* Contact Page */
.contact-wrapper { 
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
  background: var(--card-bg);
  padding: 40px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}
.contact-info h3 { margin-bottom: 20px; font-size: 1.8rem; color: #fff;}
.contact-info p { margin-bottom: 20px; }
.contact-info ul { list-style: none; margin-bottom: 20px; }
.contact-info li { margin-bottom: 10px; }
.contact-form h3 { margin-bottom: 20px; font-size: 1.8rem; color: #fff;}

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 700; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px;
  background: var(--primary-bg);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  color: var(--text-color);
  font-family: var(--font-family);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(0, 170, 255, 0.3);
}
.contact-form button { width: 100%; font-size: 1.1rem; }
.contact-form button:disabled { background: #555; border-color: #555; cursor: not-allowed; }

/* Footer */
.site-footer {
  background-color: var(--secondary-bg);
  padding: 30px 0;
  border-top: 1px solid var(--border-color);
  margin-top: 80px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-content p { color: var(--silver-color); }
.footer-nav a { color: var(--silver-color); margin-right: 20px; }
.footer-nav a:last-child { margin-right: 0; }

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media(max-width: 992px) {
  .news-list-item { grid-template-columns: 200px 1fr; }
  .contact-wrapper { grid-template-columns: 1fr; }
}

@media(max-width: 768px) {
  body { font-size: 15px; }
  .main-nav { 
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--secondary-bg);
    width: 100%;
    border-top: 1px solid var(--border-color);
  }
  .main-nav.active {
    display: block;
  }
  .main-nav ul { flex-direction: column; padding: 20px; gap: 0;}
  .main-nav li { width: 100%; text-align: center; }
  .main-nav a { display: block; padding: 15px; }
  .main-nav a::after { display: none; }
  .menu-toggle { display: block; }

  .hero h1 { font-size: 3rem; }
  .hero p { font-size: 1.2rem; }
  .section-title { font-size: 2rem; }

  .categories-grid { grid-template-columns: 1fr; }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-item img { height: 250px; }

  .footer-content { flex-direction: column; text-align: center; }
}