/* ==========================================================================
   Buttons — per Design System v6 §4 (all states)
   ========================================================================== */

.btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--fs-ui);
  border-radius: var(--radius-sm);
  padding: 13px 26px;
  cursor: pointer;
  border: 1.5px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}

.btn-primary { background: var(--color-navy-900); color: var(--color-white); }
.btn-primary:hover { background: var(--color-blue-600); text-decoration: none; color: var(--color-white); }
.btn-primary:disabled,
.btn-primary[aria-busy="true"] { background: var(--color-disabled-bg); cursor: not-allowed; }

.btn-secondary { background: transparent; color: var(--color-navy-900); border-color: var(--color-navy-900); }
.btn-secondary:hover { background: var(--color-navy-900); color: var(--color-white); text-decoration: none; }

.btn-gold { background: transparent; color: var(--color-navy-900); border-color: var(--color-gold-500); }
.btn-gold:hover { background: var(--color-gold-500); border-color: var(--color-gold-500); text-decoration: none; }

.btn-ghost { background: transparent; color: var(--color-text-secondary); border-color: transparent; }
.btn-ghost:hover { color: var(--color-navy-900); text-decoration: none; }

.btn--full { width: 100%; justify-content: center; }