.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: 30px;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  z-index: 1;
}
.btn-primary {
  background: var(--gradient-neon);
  color: var(--bg-space);
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.2);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 240, 255, 0.5);
  color: var(--text-primary);
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--neon-purple) 0%, var(--neon-blue) 50%, var(--neon-cyan) 100%);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: -1;
  border-radius: 30px;
}
.btn-primary:hover::before {
  opacity: 1;
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  box-shadow: var(--shadow-galactic);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-cyan);
  box-shadow: 0 8px 25px var(--neon-cyan-glow);
}
.btn-small {
  padding: 0.75rem 1.5rem;
  font-size: 0.8rem;
}
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.3s;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}
.btn-back:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--neon-cyan-glow);
  transform: translateX(-5px);
}
.btn-back-icon {
  font-size: 1.2rem;
  transition: transform 0.3s;
}
.btn-back:hover .btn-back-icon {
  transform: translateX(-3px);
}