/* ============================================================
   Buttons
   ============================================================ */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  margin-top: 8px;
  padding: 16px 22px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--white);
  background: var(--brand-red);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-btn);
  transition: transform var(--t-fast) var(--ease),
              background var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease),
              opacity var(--t-base) var(--ease);
}

.btn-primary:hover {
  background: var(--brand-red-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-btn-hover);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary:disabled,
.btn-primary[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-soft);
}