/* ================================================================
   Button system — single source of truth.

   Imported by both design-system.css (product pages: /app, /manage,
   /admin, /demo-v3) and styles.css (marketing + auth pages: /, /login,
   /signup, /pricing, etc). Keep all .btn rules here so the two stylesheets
   never drift.

   Depends on CSS custom properties: --primary, --primary-dark, --gray-100,
   --gray-200, --gray-300, --text-primary, --text-secondary, --radius,
   --radius-lg. Both stylesheets define these before @import-ing this file.
   ================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--gray-200);
  background: #fff;
  color: var(--text-primary);
  transition: all 0.15s ease;
  text-decoration: none;
  line-height: 1.4;
}
.btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary, .btn-secondary, .btn-outline, .btn-ghost {
  border-color: transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  border-color: transparent;
}
.btn-secondary {
  background: var(--gray-100);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: var(--gray-200);
  color: var(--text-primary);
  border-color: transparent;
}
.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--gray-300);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
}
.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}
.btn-danger-subtle {
  background: var(--danger-light, #FEE2E2);
  color: var(--danger, #DC2626);
  border: none;
}
.btn-danger-subtle:hover {
  background: var(--danger-light, #FEE2E2);
  color: var(--danger-dark, #991B1B);
}
.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}
.btn-white {
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
}