/* SpaceOrbitals — base styles */

:root {
  --bg: #0a0a1e;
  --bg-elevated: #12122a;
  --bg-card: rgba(20, 20, 50, 0.6);
  --text: #e0e0ff;
  --text-dim: #8888aa;
  --text-bright: #ffffff;
  --accent: #00d4ff;
  --accent-2: #ff00ff;
  --accent-3: #ffaa00;
  --border: rgba(0, 212, 255, 0.2);
  --border-bright: rgba(0, 212, 255, 0.5);
  --radius: 8px;
  --max-width: 1200px;
  --nav-height: 64px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Cascadia Code', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Stars background */
body::before {
  content: '';
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 60% 20%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 10% 80%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 50% 40%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 30% 90%, rgba(255,255,255,0.5), transparent);
  z-index: -1;
  pointer-events: none;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

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

main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

/* Typography */
h1, h2, h3, h4 { color: var(--text-bright); margin-bottom: 0.75em; line-height: 1.2; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-top: 1.5em; }
h3 { font-size: 1.5rem; margin-top: 1.25em; }
h4 { font-size: 1.125rem; margin-top: 1em; }
p { margin-bottom: 1em; }

/* Nav */
.site-nav {
  position: sticky; top: 0;
  background: rgba(10, 10, 30, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}
.nav-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-bright);
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-logo:hover { color: var(--accent); }
.nav-links {
  display: flex; align-items: center; gap: 1.5rem;
  list-style: none; margin: 0; padding: 0;
}
.nav-links a, .nav-dropdown-toggle {
  color: var(--text-dim);
  font-size: 0.95rem;
  font-weight: 500;
  background: none; border: none; cursor: pointer;
  font-family: inherit;
  padding: 0;
}
.nav-links a:hover, .nav-dropdown-toggle:hover { color: var(--accent); }
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute; top: 100%; right: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 200px;
  padding: 0.5rem 0;
  list-style: none;
  display: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.nav-dropdown.open .nav-dropdown-menu { display: block; }
.nav-dropdown-menu li a {
  display: block; padding: 0.5rem 1rem; color: var(--text);
}
.nav-dropdown-menu li a:hover { background: var(--bg-card); color: var(--accent); }
.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-bright); }

/* Hero */
.hero {
  text-align: center;
  padding: 4rem 0 2rem;
}
.hero h1 {
  font-size: 3.5rem;
  background: linear-gradient(90deg, #00d4ff, #ff00ff, #ffaa00);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.hero .tagline { font-size: 1.25rem; color: var(--text-dim); max-width: 700px; margin: 0 auto 2rem; }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform 0.2s, border-color 0.2s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-bright);
}
.card h3 { color: var(--accent); margin-top: 0; }
.card-meta { color: var(--text-dim); font-size: 0.875rem; margin-bottom: 0.75rem; }
.card .tag { 
  display: inline-block; 
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}
.card .tag.news { background: rgba(255, 170, 0, 0.1); color: var(--accent-3); }
.card .tag.educational { background: rgba(0, 255, 136, 0.1); color: #00ff88; }
.card .tag.review { background: rgba(255, 0, 255, 0.1); color: var(--accent-2); }
.card .tag.hobbyist { background: rgba(0, 212, 255, 0.1); color: var(--accent); }

/* Article */
.article-header { margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.article-header h1 { font-size: 2.5rem; }
.article-meta { color: var(--text-dim); font-size: 0.95rem; }
.article-content { max-width: 720px; margin: 0 auto; }
.article-content h2 { color: var(--accent); }
.article-content h3 { color: var(--accent-2); }
.article-content p { margin-bottom: 1.25em; }
.article-content ul, .article-content ol { margin: 0 0 1.25em 1.5em; }
.article-content li { margin-bottom: 0.5em; }
.article-content code { 
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}
.article-content pre {
  background: var(--bg-elevated);
  padding: 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1em 0;
}
.article-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin: 1.25em 0;
  color: var(--text-dim);
  font-style: italic;
}

/* Author byline */
.byline {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 2rem 0;
}
.byline-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  color: #000; font-weight: 700; font-size: 1.25rem;
}
.byline-info { flex: 1; }
.byline-info strong { color: var(--text-bright); }
.byline-info .role { color: var(--text-dim); font-size: 0.875rem; }

/* Ad slot */
.ad-slot {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 2rem 0;
  text-align: center;
  min-height: 100px;
}
.ad-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 3rem 0 1rem;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
.footer-col h4 { color: var(--accent); margin-bottom: 0.75rem; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: var(--text-dim); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 0.5rem 2rem; }
  .hero h1 { font-size: 2.25rem; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  main { padding: 1.5rem 1rem; }
}