/* GLOBAL RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Inter, Helvetica, Arial, sans-serif;
}

/* BACKGROUND */
.orbit-bg {
  background: radial-gradient(circle at 20% 20%, #0a0f1f 0%, #020612 60%, #000 100%);
  color: #e6e6e6;
  min-height: 100vh;
}

/* NAVBAR */
.navbar {
  width: 100%;
  padding: 16px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 15, 30, 0.65);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav-logo {
  height: 44px;
  filter: drop-shadow(0 0 4px rgba(0,255,255,0.3));
}

.nav-right a {
  margin-left: 24px;
  text-decoration: none;
  color: #b5c7ff;
  font-weight: 500;
  transition: 0.2s;
}

.nav-right a:hover {
  color: #ffffff;
}

/* HERO */
.hero {
  text-align: center;
  padding: 90px 20px 70px;
}

.hero h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 12px;
}

.subtitle {
  font-size: 20px;
  opacity: 0.85;
  margin-bottom: 32px;
}

.hero-cta {
  background: #4ba3ff;
  padding: 14px 26px;
  border-radius: 8px;
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: 0.25s;
}

.hero-cta:hover {
  background: #69b7ff;
  transform: translateY(-2px);
}

/* MAIN CONTENT LAYOUT */
.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 32px;
  margin-bottom: 40px;
  backdrop-filter: blur(8px);
}

.tagline {
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.7;
  margin-bottom: 10px;
}

.card h2 {
  margin-bottom: 16px;
}

.card ul {
  margin-top: 10px;
  padding-left: 20px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 45px 20px;             /* increased vertical space */
  background: rgba(10, 15, 30, 0.55);
  margin-top: 60px;               /* more separation from content */
  border-top: 1px solid rgba(255,255,255,0.10);
  line-height: 1.8;               /* improved readability */
}

.footer a {
  color: #b5c7ff;
  text-decoration: none;
  margin: 0 12px;                 /* slightly wider spacing */
  font-size: 0.95rem;
  transition: 0.2s ease;
}

.footer a:hover {
  color: #fff;
}

.footer .science-links {
  margin-top: 14px;
  font-size: 0.85rem;
  opacity: 0.75;
  display: block;
}

.footer p {
  margin-top: 15px;
  opacity: 0.6;
  font-size: 0.85rem;
}

/* --- DOCUMENTATION CARD SPACING ENHANCEMENTS --- */

.card h2 {
  margin-bottom: 18px;
}

.card h3 {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.card p {
  margin-bottom: 16px;
  line-height: 1.55;
}

.card ul {
  margin: 12px 0 20px 0;
  padding-left: 22px;
}

.card ul li {
  margin-bottom: 8px;
  line-height: 1.45;
}

/* Extra spacing between major sections */
.card + .card {
  margin-top: 40px;
}