/* ── CHECKOUT PAGE STYLES ── */
.checkout-section {
  padding: 4rem 0;
  background: transparent;
  min-height: 70vh;
}
.checkout-header {
  margin-bottom: 3rem;
  text-align: center;
}
.checkout-header h1 {
  font-size: 2.5rem;
  color: var(--white);
}

.checkout-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
}
@media (max-width: 900px) {
  .checkout-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Left: Billing Details */
.billing-section {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: var(--border-glass);
  box-shadow: var(--shadow-glass);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
}
.billing-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--white);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; gap: 1rem; }
}
.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.5rem;
}
.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-main);
}
.form-group label span.required {
  color: #FF4D4D;
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.04);
  color: #FFFFFF;
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary);
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(123,91,255,0.25);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Right: Order Summary */
.order-section {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: var(--border-glass);
  box-shadow: var(--shadow-glass);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  position: sticky;
  top: 2rem;
}
.order-section h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.checkout-order-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}
.checkout-order-table th,
.checkout-order-table td {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.checkout-order-table th {
  text-align: left;
  color: var(--text-sub);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
}
.checkout-order-table td.product-name {
  color: var(--text-main);
  font-weight: 500;
}
.checkout-order-table td.product-total {
  text-align: right;
  font-weight: 600;
  color: var(--secondary);
}
.checkout-order-table tr.order-subtotal td,
.checkout-order-table tr.order-shipping td {
  font-weight: 600;
  color: var(--text-main);
}
.checkout-order-table tr.order-shipping td small {
  display: block;
  font-weight: 400;
  color: var(--text-sub);
  margin-top: 0.25rem;
}
.checkout-order-table tr.order-total td {
  padding-top: 1.5rem;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--white);
  border-bottom: none;
}
.checkout-order-table tr.order-total td:last-child {
  text-align: right;
}

/* Payment Methods */
.payment-methods {
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.payment-method {
  margin-bottom: 1rem;
}
.payment-method:last-child {
  margin-bottom: 0;
}
.payment-method label {
  display: flex;
  align-items: center;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-main);
}
.payment-method input[type="radio"] {
  margin-right: 0.75rem;
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--secondary);
}
.payment-box {
  margin-top: 0.75rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-sub);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: none;
  line-height: 1.5;
}
.payment-method input[type="radio"]:checked ~ .payment-box {
  display: block;
}

.place-order-btn {
  width: 100%;
  padding: 1.25rem;
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}