/* ============================================
   Components - Buttons, Cards, Modal, Cart, Toasts
   ============================================ */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--color-secondary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--color-secondary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: var(--bg-secondary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-2);
  border-radius: var(--border-radius-sm);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-success {
  background: var(--color-success);
  color: var(--text-inverse);
}

.btn-success:hover {
  filter: brightness(0.9);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-full {
  width: 100%;
}

/* Icon button */
.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-full);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--color-secondary);
  transform: translateY(-1px);
}

.icon-btn--badge {
  position: relative;
}

.icon-btn__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--color-secondary);
  color: var(--text-inverse);
  font-size: 0.65rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

/* --- Category item (sidebar) --- */
.category-pill {
  display: flex;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-md);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.category-pill:hover {
  background: var(--bg-secondary);
  color: var(--color-secondary);
}

.category-pill.active {
  background: var(--color-secondary);
  color: var(--text-inverse);
  border-color: var(--color-secondary);
}

[data-theme="dark"] .category-pill.active {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

/* --- Search input --- */
.search-input {
  width: 100%;
  min-width: 0;
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-12);
  border-radius: var(--border-radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
  background: var(--bg-primary);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

/* --- Select control --- */
.select-control {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.select-control:focus {
  outline: none;
  border-color: var(--color-secondary);
}

/* --- Price slider --- */
.price-filter {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.price-filter__range {
  width: 180px;
  min-width: 0;
  accent-color: var(--color-secondary);
  cursor: pointer;
}

.price-filter__label {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  min-width: 90px;
  white-space: nowrap;
}

/* --- Cards --- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow), border-color var(--transition-slow);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.product-card__image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-secondary);
}

.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card__image img {
  transform: scale(1.05);
}

.product-card__favorite {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-full);
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  color: var(--text-tertiary);
  transition: all var(--transition-fast);
}

.product-card:hover .product-card__favorite {
  transform: scale(1.08);
  color: var(--color-danger);
}

.product-card__favorite:hover {
  color: var(--color-danger);
}

.product-card__favorite[data-active="true"] {
  color: var(--color-danger);
}

.product-card__favorite [data-lucide][data-filled="true"] svg {
  fill: currentColor;
}

/* Missing (orphan) favorite products */
.product-card--missing {
  opacity: 0.6;
  filter: grayscale(0.6);
}
.product-card--missing .product-card__name {
  text-decoration: line-through;
}
.product-card--missing .product-card__missing {
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-top: var(--space-2);
}
.product-card--missing .product-card__favorite {
  opacity: 1;
}

.product-card__body {
  padding: var(--space-4) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.product-card__category {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  font-weight: 600;
}

.product-card__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.product-card__code {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.product-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.product-card__meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.product-card__footer {
  margin-top: auto;
  margin-inline: calc(-1 * var(--space-5));
  margin-bottom: calc(-1 * var(--space-5));
  padding-top: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.product-card__price {
  align-self: flex-start;
  margin-inline: var(--space-5);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.product-card__price small {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  margin-left: var(--space-1);
}

.product-card__buy {
  width: 100%;
  min-height: 48px;
  border-radius: 0;
  background: var(--color-secondary);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 700;
  transition: all var(--transition-base);
}

.product-card__buy:hover {
  background: var(--color-secondary-hover);
  transform: scale(1.05);
}

/* --- Skeleton --- */
.skeleton {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.skeleton-card__image {
  aspect-ratio: 1;
  background: var(--bg-tertiary);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-card__body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.skeleton-line {
  height: 14px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-tertiary);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-line--sm { width: 30%; }
.skeleton-line--md { width: 60%; }
.skeleton-line--lg { width: 100%; }

/* --- Empty state --- */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.empty-state__icon {
  width: 72px;
  height: 72px;
  border-radius: var(--border-radius-full);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
}

.empty-state__title {
  font-size: var(--font-size-xl);
}

.empty-state__desc {
  color: var(--text-secondary);
  max-width: 360px;
}

/* --- Modal --- */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  backdrop-filter: blur(4px);
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  z-index: var(--z-modal);
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 900px;
  width: calc(100% - 2 * var(--space-6));
  margin-inline: auto;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(0.95);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  max-height: calc(100vh - 2 * var(--space-6));
  overflow-y: auto;
}

.modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-danger);
  color: #fff;
}

.modal__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.modal__image {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
  overflow: hidden;
  min-height: 320px;
}

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

.modal__info {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal__category {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  font-weight: 600;
}

.modal__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
}

.modal__code {
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

.modal__price {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-secondary);
}

.modal__price small {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-tertiary);
}

.modal__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.modal__detail {
  background: var(--bg-secondary);
  padding: var(--space-3);
  border-radius: var(--border-radius-md);
}

.modal__detail-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.modal__detail-value {
  font-weight: 600;
  margin-top: var(--space-1);
}

.modal__actions {
  display: flex;
  gap: var(--space-3);
  margin-top: auto;
}

/* --- Cart sidebar --- */
.cart {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 400px;
  max-width: 100%;
  background: var(--bg-primary);
  z-index: var(--z-cart);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
}

.cart.active {
  transform: translateX(0);
}

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

.cart__title {
  font-size: var(--font-size-xl);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.cart__items {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cart__item {
  display: flex;
  gap: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-md);
  padding: var(--space-3);
}

.cart__item-img {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-md);
  object-fit: cover;
  background: var(--bg-tertiary);
  flex-shrink: 0;
}

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

.cart__item-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.3;
}

.cart__item-code {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.cart__item-subtotal {
  font-weight: 700;
  color: var(--color-secondary);
}

.cart__item-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.cart__qty-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--border-radius-sm);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.cart__qty-btn:hover {
  background: var(--color-secondary);
  color: var(--text-inverse);
}

.cart__qty {
  font-weight: 600;
  min-width: 24px;
  text-align: center;
}

.cart__remove {
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
  margin-top: auto;
}

.cart__remove:hover {
  color: var(--color-danger);
}

.cart__footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.cart__total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-lg);
}

.cart__total-value {
  font-weight: 800;
  color: var(--color-secondary);
}

.cart__empty {
  text-align: center;
  color: var(--text-tertiary);
  padding: var(--space-16) var(--space-6);
}

/* --- Toasts --- */
.toast-container {
  position: fixed;
  top: calc(var(--header-height) + var(--space-4));
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  pointer-events: none;
  width: 100%;
  max-width: 400px;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  pointer-events: auto;
  width: max-content;
  max-width: 100%;
  animation: toast-in var(--transition-spring);
}

.toast--success { background: var(--color-success); color: #fff; }
.toast--error { background: var(--color-danger); color: #fff; }
.toast--info { background: var(--color-accent); color: #fff; }

.toast.out {
  animation: toast-out var(--transition-base) forwards;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(-20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-20px) scale(0.95); }
}

/* --- Loading screen --- */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-screen__logo {
  width: 72px;
  height: 72px;
  border-radius: var(--border-radius-full);
  background: var(--bg-tertiary);
  object-fit: contain;
  animation: pulse-soft 1.5s ease-in-out infinite;
}

.loading-screen__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bg-tertiary);
  border-top-color: var(--color-secondary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse-soft { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

/* --- Scroll reveal --- */
[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-aos] {
    opacity: 1;
    transform: none;
  }
}