/* ============================================
 * Cart Drawer - Slide-out Panel
 * All values reference CSS variables from variables.css
 * ============================================ */

/* --- Scrim/Backdrop --- */

.cart-scrim {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--easing-ease);
  z-index: calc(var(--z-modal) - 1);
}

.cart-scrim.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* --- Drawer Panel --- */

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: 380px;
  max-width: 90vw;
  z-index: var(--z-modal);
  background-color: var(--color-surface);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--duration-base) var(--easing-out);
  box-shadow: var(--shadow-xl);
}

.cart-drawer.is-open {
  transform: translateX(0);
}

.cart-drawer:not(.is-open) {
  transition: transform 200ms var(--easing-in);
}

/* --- Header --- */

.cart-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.cart-drawer__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

.cart-drawer__count {
  font-family: var(--font-body);
  font-size: var(--font-size-small);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
}

.cart-drawer__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--easing-ease);
}

.cart-drawer__close:hover {
  color: var(--color-primary-dark);
}

.cart-drawer__close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* --- Body (scrollable) --- */

.cart-drawer__body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-4) var(--space-6);
}

/* --- Empty State --- */

.cart-drawer__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-16) var(--space-4);
  text-align: center;
  color: var(--color-text-muted);
}

.cart-drawer__empty[hidden] {
  display: none;
}

.cart-drawer__empty p {
  font-size: var(--font-size-body-lg);
}

/* --- Items List --- */

.cart-drawer__items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cart-drawer__items[hidden] {
  display: none;
}

/* --- Cart Item --- */

.cart-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item__image {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-background);
}

.cart-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item__details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.cart-item__name {
  font-size: var(--font-size-body);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  line-height: var(--leading-small);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cart-item__price {
  font-size: var(--font-size-small);
  font-weight: var(--weight-semibold);
  color: var(--color-primary-dark);
  line-height: var(--leading-small);
}

/* --- Quantity Controls --- */

.cart-item__quantity {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.cart-item__qty-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  font-size: var(--font-size-body);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--easing-ease),
    border-color var(--duration-fast) var(--easing-ease);
}

.cart-item__qty-btn:hover {
  background-color: var(--color-border);
  border-color: var(--color-border-strong);
}

.cart-item__qty-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.cart-item__qty-value {
  font-size: var(--font-size-small);
  font-weight: var(--weight-medium);
  min-width: 24px;
  text-align: center;
  line-height: 1;
}

/* --- Remove Button --- */

.cart-item__remove {
  align-self: flex-start;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--duration-fast) var(--easing-ease);
}

.cart-item__remove:hover {
  color: var(--color-error);
}

.cart-item__remove:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.cart-item__remove svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
}

/* --- Footer (sticky) --- */

.cart-drawer__footer {
  flex-shrink: 0;
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  max-height: 70vh;
  overflow-y: auto;
}

.cart-drawer__footer[hidden] {
  display: none;
}

/* --- Totals --- */

.cart-drawer__totals {
  margin-bottom: var(--space-5);
}

.cart-drawer__line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  line-height: var(--leading-small);
}

.cart-drawer__line--total {
  padding-top: var(--space-3);
  margin-top: var(--space-2);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-body);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

/* --- Checkout Button --- */

.cart-drawer__checkout {
  width: 100%;
}

.cart-drawer__checkout[hidden] {
  display: none;
}

/* --- Shipping Form --- */

.cart-drawer__shipping-form {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}

.cart-drawer__shipping-form[hidden] {
  display: none;
}

.cart-drawer__form-heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-5);
  color: var(--color-text);
}

.cart-form-group {
  margin-bottom: var(--space-4);
}

.cart-form-group label {
  display: block;
  font-size: var(--font-size-small);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.required-star {
  color: var(--color-error);
}

.cart-form-group input {
  width: 100%;
  min-height: 40px;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast) var(--easing-ease),
    box-shadow var(--duration-fast) var(--easing-ease);
}

.cart-form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(184, 110, 74, 0.2);
}

.cart-form-group input:disabled {
  background-color: var(--color-background);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.cart-form-group input[aria-invalid="true"] {
  border-color: var(--color-error);
}

.cart-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* Form errors */

.cart-form-errors {
  font-size: var(--font-size-small);
  color: var(--color-error);
  margin-bottom: var(--space-4);
}

.cart-form-errors:empty {
  display: none;
}

.cart-form-field-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
}

/* --- Pay Now Button --- */

.cart-drawer__pay-now {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.cart-drawer__pay-now:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.cart-drawer__pay-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-surface);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
}

.cart-drawer__pay-now.is-loading .cart-drawer__pay-spinner {
  display: block;
}

.cart-drawer__pay-now.is-loading .cart-drawer__pay-text {
  /* Keep text but show spinner next to it */
}

/* --- Mobile Adjustments --- */

@media (max-width: 480px) {
  .cart-drawer {
    max-width: 100vw;
    width: 100vw;
  }

  .cart-form-row {
    grid-template-columns: 1fr;
  }
}

/* --- Reduced Motion --- */

@media (prefers-reduced-motion: reduce) {
  .cart-drawer,
  .cart-drawer:not(.is-open) {
    transition: none;
  }

  .cart-scrim {
    transition: none;
  }

  .cart-drawer__pay-spinner {
    animation: none;
  }
}