/* ==========================================================================
   Digital Earth - Component Styles
   Reusable UI components: buttons, cards, badges, forms, modals, etc.
   ========================================================================== */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Primary Button */
.btn--primary {
  background-color: var(--color-primary);
  color: #FAFAF9;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  text-decoration: none;
}

.btn--primary:active {
  background-color: var(--color-primary-800);
}

/* Secondary Button */
.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: #FAFAF9;
  text-decoration: none;
}

/* Ghost Button */
.btn--ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-text-muted);
  text-decoration: none;
}

/* Text Button */
.btn--text {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
  padding-left: var(--space-2);
  padding-right: var(--space-2);
}

.btn--text:hover {
  background-color: var(--color-primary-50);
  text-decoration: none;
}

/* Icon Button */
.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn--icon svg {
  width: 20px;
  height: 20px;
}

/* Button with Icon */
.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Button Loading State */
.btn--loading {
  position: relative;
  color: transparent !important;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

.btn--primary.btn--loading::after {
  border-color: rgba(255, 255, 255, 0.3);
  border-right-color: transparent;
}

@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Full Width Button */
.btn--full {
  width: 100%;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-light);
}

.card__image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

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

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

.card__body {
  padding: var(--space-5);
}

.card__header {
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin: 0;
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.card__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-alt);
}

/* ==========================================================================
   Product Card
   ========================================================================== */

.product-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

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

.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__actions {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition-base);
}

.product-card:hover .product-card__actions {
  opacity: 1;
  transform: translateX(0);
}

.product-card__action-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.product-card__action-btn:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.product-card__action-btn svg {
  width: 18px;
  height: 18px;
}

.product-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
}

.product-card__body {
  padding: var(--space-4);
}

.product-card__category {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.product-card__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.product-card__title a {
  color: var(--color-text);
  text-decoration: none;
}

.product-card__title a:hover {
  color: var(--color-primary);
}

.product-card__feature {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.product-card__price {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.product-card__rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-secondary);
}

/* ==========================================================================
   Badges
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: 1.2;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Badge Variants */
.badge--primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge--secondary {
  background-color: var(--color-secondary);
  background-color: rgba(157, 200, 141, 0.2);
  color: var(--color-secondary-dark);
}

.badge--success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge--warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge--error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
}

.badge--info {
  background-color: var(--color-info-bg);
  color: var(--color-info);
}

.badge--neutral {
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
}

/* Sustainability Rating Badge */
.sustainability-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background-color: rgba(157, 200, 141, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-secondary-dark);
}

.sustainability-badge__icon {
  color: var(--color-secondary);
}

/* Stock Badge */
.stock-badge {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

.stock-badge--in-stock {
  color: var(--color-success);
}

.stock-badge--low-stock {
  color: var(--color-warning);
}

.stock-badge--out-of-stock {
  color: var(--color-error);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-text-muted);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

/* Form Input States */
.form-input--error,
.form-select--error,
.form-textarea--error {
  border-color: var(--color-error);
}

.form-input--error:focus,
.form-select--error:focus,
.form-textarea--error:focus {
  box-shadow: 0 0 0 3px var(--color-error-bg);
}

.form-input--success,
.form-select--success,
.form-textarea--success {
  border-color: var(--color-success);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-error);
}

.form-hint {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2378716C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 18px;
  padding-right: var(--space-10);
}

/* Textarea */
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-check__input {
  appearance: none;
  width: 20px;
  height: 20px;
  margin: 0;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  margin-top: 2px;
}

.form-check__input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.form-check__input:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.form-check__input[type="radio"] {
  border-radius: var(--radius-full);
}

.form-check__input[type="radio"]:checked {
  background-image: none;
  background-color: var(--color-surface);
  border-width: 6px;
  border-color: var(--color-primary);
}

.form-check__label {
  font-size: var(--text-base);
  color: var(--color-text);
  cursor: pointer;
}

/* Toggle Switch */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.toggle__input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle__slider {
  position: relative;
  width: 48px;
  height: 26px;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
}

.toggle__slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background-color: var(--color-surface);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.toggle__input:checked + .toggle__slider {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.toggle__input:checked + .toggle__slider::after {
  transform: translateX(22px);
}

.toggle__input:focus-visible + .toggle__slider {
  box-shadow: var(--focus-ring);
}

.toggle__label {
  font-size: var(--text-base);
  color: var(--color-text);
}

/* ==========================================================================
   Modal
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: min(90vw, 600px);
  max-height: 90vh;
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  overflow: hidden;
}

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

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

.modal__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin: 0;
}

.modal__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

.modal__body {
  padding: var(--space-6);
  overflow-y: auto;
  max-height: calc(90vh - 140px);
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  min-width: 300px;
  max-width: 400px;
  pointer-events: auto;
  animation: toast-slide-in 0.3s ease;
}

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast--success {
  border-left: 4px solid var(--color-success);
}

.toast--error {
  border-left: 4px solid var(--color-error);
}

.toast--warning {
  border-left: 4px solid var(--color-warning);
}

.toast--info {
  border-left: 4px solid var(--color-info);
}

.toast__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.toast--success .toast__icon {
  color: var(--color-success);
}

.toast--error .toast__icon {
  color: var(--color-error);
}

.toast__content {
  flex: 1;
}

.toast__title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.toast__message {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.toast__close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.toast__close:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

/* ==========================================================================
   Tabs
   ========================================================================== */

.tabs {
  border-bottom: 1px solid var(--color-border);
}

.tabs__list {
  display: flex;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-x: auto;
}

.tabs__trigger {
  padding: var(--space-3) var(--space-5);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tabs__trigger:hover {
  color: var(--color-text);
}

.tabs__trigger[aria-selected="true"],
.tabs__trigger.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tabs__trigger:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.tabs__panel {
  padding: var(--space-6) 0;
}

.tabs__panel[hidden] {
  display: none;
}

/* ==========================================================================
   Accordion
   ========================================================================== */

.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion__item {
  border-bottom: 1px solid var(--color-border);
}

.accordion__item:last-child {
  border-bottom: none;
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  text-align: left;
  background-color: var(--color-surface);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.accordion__trigger:hover {
  background-color: var(--color-bg-alt);
}

.accordion__trigger:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.accordion__icon {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.accordion__trigger[aria-expanded="true"] .accordion__icon {
  transform: rotate(180deg);
}

.accordion__content {
  display: none;
  padding: 0 var(--space-5) var(--space-5);
}

.accordion__trigger[aria-expanded="true"] + .accordion__content {
  display: block;
}

/* ==========================================================================
   Progress Bar
   ========================================================================== */

.progress {
  width: 100%;
  height: 8px;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress--success .progress__bar {
  background-color: var(--color-success);
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumbs__link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.breadcrumbs__separator {
  color: var(--color-text-muted);
}

.breadcrumbs__current {
  color: var(--color-text);
  font-weight: var(--font-medium);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-8);
}

.pagination__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-3);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination__btn:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-text-muted);
}

.pagination__btn--active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.pagination__btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==========================================================================
   Skeleton Loading
   ========================================================================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-alt) 25%,
    var(--color-border-light) 50%,
    var(--color-bg-alt) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton--text {
  height: 1em;
  margin-bottom: var(--space-2);
}

.skeleton--title {
  height: 1.5em;
  width: 60%;
  margin-bottom: var(--space-3);
}

.skeleton--image {
  aspect-ratio: 4 / 3;
}

.skeleton--avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  text-align: center;
}

.empty-state__icon {
  width: 80px;
  height: 80px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.empty-state__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.empty-state__description {
  color: var(--color-text-secondary);
  max-width: 400px;
  margin-bottom: var(--space-6);
}

/* ==========================================================================
   Quantity Selector
   ========================================================================== */

.quantity-selector {
  display: inline-flex;
  align-items: center;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.quantity-selector__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.quantity-selector__btn:hover:not(:disabled) {
  background-color: var(--color-primary-100);
  color: var(--color-primary);
}

.quantity-selector__btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.quantity-selector__input {
  width: 60px;
  height: 40px;
  padding: 0;
  text-align: center;
  font-weight: var(--font-semibold);
  border: none;
  background: transparent;
}

.quantity-selector__input::-webkit-inner-spin-button,
.quantity-selector__input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.quantity-selector__input[type="number"] {
  -moz-appearance: textfield;
}

/* ==========================================================================
   Price Display
   ========================================================================== */

.price {
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.price--large {
  font-size: var(--text-3xl);
}

.price__original {
  text-decoration: line-through;
  color: var(--color-text-muted);
  font-weight: var(--font-normal);
  margin-left: var(--space-2);
}

.price__sale {
  color: var(--color-error);
}

/* ==========================================================================
   Star Rating
   ========================================================================== */

.star-rating {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.star-rating__star {
  width: 18px;
  height: 18px;
  color: var(--color-warning);
}

.star-rating__star--empty {
  color: var(--color-border);
}

.star-rating__count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}

/* ==========================================================================
   Alert / Callout
   ========================================================================== */

.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid;
}

.alert--info {
  background-color: var(--color-info-bg);
  border-color: var(--color-info);
}

.alert--success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success);
}

.alert--warning {
  background-color: var(--color-warning-bg);
  border-color: var(--color-warning);
}

.alert--error {
  background-color: var(--color-error-bg);
  border-color: var(--color-error);
}

.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert--info .alert__icon { color: var(--color-info); }
.alert--success .alert__icon { color: var(--color-success); }
.alert--warning .alert__icon { color: var(--color-warning); }
.alert--error .alert__icon { color: var(--color-error); }

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.alert__message {
  font-size: var(--text-sm);
}