/* ========================================
   COMPONENTS 2026 - MARKETPLACE PREMIUM
   ======================================== */

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: var(--leading-tight);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

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

/* Button Variants */
.btn-primary {
  background: var(--color-primary-600);
  color: white;
  border-color: var(--color-primary-600);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-700);
  border-color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-neutral-300);
}

.btn-success {
  background: var(--color-success-600);
  color: white;
  border-color: var(--color-success-600);
}

.btn-success:hover:not(:disabled) {
  background: var(--color-success-700);
  border-color: var(--color-success-700);
}

.btn-warning {
  background: var(--color-warning-500);
  color: white;
  border-color: var(--color-warning-500);
}

.btn-warning:hover:not(:disabled) {
  background: var(--color-warning-600);
  border-color: var(--color-warning-600);
}

.btn-error {
  background: var(--color-error-600);
  color: white;
  border-color: var(--color-error-600);
}

.btn-error:hover:not(:disabled) {
  background: var(--color-error-700);
  border-color: var(--color-error-700);
}

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

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

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
}

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

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* === FORMS === */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

.form-label.required::after {
  content: ' *';
  color: var(--color-error-500);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error-500);
}

.form-input.error:focus,
.form-select.error:focus,
.form-textarea.error:focus {
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.1);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error-600);
  margin-top: var(--space-1);
}

.form-help {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* === CARDS === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-neutral-50);
}

/* Product Card */
.product-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.product-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--color-primary-200);
}

.product-card-image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--color-neutral-100);
}

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

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

.product-card-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: white;
  background: var(--color-error-500);
  border-radius: var(--radius-full);
  z-index: 10;
}

.product-card-wishlist {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
}

.product-card-wishlist:hover {
  background: white;
  transform: scale(1.1);
}

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

.product-card-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--leading-tight);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-vendor {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.product-card-price {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.product-card-price-current {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary-600);
}

.product-card-price-original {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.product-card-rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.product-card-stars {
  display: flex;
  gap: var(--space-1);
}

.product-card-rating-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.product-card-actions {
  display: flex;
  gap: var(--space-2);
}

/* === NAVIGATION === */
.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(10px);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-4);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-600);
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.navbar-nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.navbar-nav-link:hover,
.navbar-nav-link.active {
  color: var(--color-primary-600);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar-icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.navbar-icon-btn:hover {
  background: var(--color-surface-hover);
}

.navbar-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: white;
  background: var(--color-error-500);
  border-radius: var(--radius-full);
  padding: 0 var(--space-1);
}

/* === SKELETON LOADERS === */
.skeleton {
  background: linear-gradient(90deg, 
    var(--color-neutral-200) 25%, 
    var(--color-neutral-300) 50%, 
    var(--color-neutral-200) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-base);
}

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

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

.skeleton-text:last-child {
  margin-bottom: 0;
  width: 60%;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-button {
  height: 40px;
  width: 120px;
  border-radius: var(--radius-lg);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-xl);
}

/* === EMPTY STATES === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.empty-state-description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 400px;
}

/* === ALERTS === */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid;
  margin-bottom: var(--space-4);
}

.alert-success {
  background: var(--color-success-50);
  border-color: var(--color-success-200);
  color: var(--color-success-800);
}

.alert-warning {
  background: var(--color-warning-50);
  border-color: var(--color-warning-200);
  color: var(--color-warning-800);
}

.alert-error {
  background: var(--color-error-50);
  border-color: var(--color-error-200);
  color: var(--color-error-800);
}

.alert-info {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
  color: var(--color-primary-800);
}

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
}

.badge-primary {
  background: var(--color-primary-100);
  color: var(--color-primary-800);
}

.badge-success {
  background: var(--color-success-100);
  color: var(--color-success-800);
}

.badge-warning {
  background: var(--color-warning-100);
  color: var(--color-warning-800);
}

.badge-error {
  background: var(--color-error-100);
  color: var(--color-error-800);
}

.badge-neutral {
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }
  
  .product-card-content {
    padding: var(--space-3);
  }
  
  .btn {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
  }
}