/* ==========================================
   CSS RESET & VARIABLES
   ========================================== */

:root {
  /* Color Palette - Planet Themes */
  --hd189733b-primary: #0047AB;
  --hd189733b-secondary: #00CED1;
  --wasp76b-primary: #FF6B35;
  --wasp76b-secondary: #FF0000;
  --cancri-primary: #FF4500;
  --cancri-secondary: #FFD700;
  --kepler-primary: #D4A574;
  --kepler-secondary: #9B59B6;
  --tres2b-primary: #1C1C1C;
  --tres2b-secondary: #8B0000;
  
  /* Base Colors */
  --space-black: #0a0a0a;
  --space-dark: #141414;
  --space-gray: #2a2a2a;
  --star-white: #ffffff;
  --star-glow: #e0e0e0;
  
  /* Typography */
  --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Animation */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.8s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--space-black);
  color: var(--star-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: clamp(2.5rem, 8vw, 5rem); }
h2 { font-size: clamp(2rem, 6vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h4 { font-size: clamp(1.25rem, 3vw, 2rem); }

p {
  margin-bottom: var(--spacing-sm);
  max-width: 65ch;
}

a {
  color: var(--star-white);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.7;
}

/* Layout Utilities */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid var(--star-white);
  border-radius: 50px;
  color: var(--star-white);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all var(--transition-medium);
  backdrop-filter: blur(10px);
}

.btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 2px;
}

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  transition: all var(--transition-fast);
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.1);
  opacity: 1;
}

/* Card Styles */
.card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: var(--spacing-md);
  backdrop-filter: blur(10px);
  transition: all var(--transition-medium);
}

.card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }
.fade-in { opacity: 0; animation: fadeIn var(--transition-slow) forwards; }

@keyframes fadeIn {
  to { opacity: 1; }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--space-black);
}

::-webkit-scrollbar-thumb {
  background: var(--space-gray);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Footer */
.footer {
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.9) 0%, rgba(0, 0, 0, 1) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  color: var(--star-white);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  line-height: 1.6;
}

.author-credit {
  margin-top: var(--spacing-sm);
  font-size: 1rem;
  color: var(--star-white) !important;
}

.author-credit strong {
  color: #FFD700;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--star-white);
  opacity: 1;
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }
  
  .nav-links {
    gap: var(--spacing-sm);
  }
  
  .nav-links a {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
  }
  
  .section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .nav-logo {
    font-size: 1rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .nav-content {
    justify-content: center;
  }
}