.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 10px 32px;
  font: 500 18px/1.4 var(--font-sans);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease, color 180ms ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-bg);
  border-color: #ffffff;
}
.btn--primary:hover {
  background: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(152, 67, 255, 0.25), var(--shadow-glow-outer);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: #ffffff;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.btn--brand {
  background: var(--color-brand);
  color: #ffffff;
  border-color: var(--color-brand);
}
.btn--brand:hover {
  background: var(--color-brand-glow);
  box-shadow: var(--shadow-glow-outer);
}

.btn--sm { padding: 6px 24px; font-size: 16px; }
.btn--lg { padding: 14px 40px; font-size: 20px; }