/* ============================================
   Dongshandao V2 - Component Styles
   ============================================ */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 24px;
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.4;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  white-space: nowrap;
  user-select: none;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn i, .btn svg {
  font-size: var(--font-size-md);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: #fff;
}

/* Accent Button */
.btn-accent {
  background-color: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

/* Outline Buttons */
.btn-outline-primary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary);
  color: #fff;
}

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

.btn-outline-secondary:hover {
  background-color: var(--color-secondary);
  color: #fff;
}

.btn-outline-accent {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline-accent:hover {
  background-color: var(--color-accent);
  color: #fff;
}

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

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

/* Button Sizes */
.btn-sm { padding: 6px 16px; font-size: var(--font-size-sm); }
.btn-lg { padding: 14px 32px; font-size: var(--font-size-md); }
.btn-xl { padding: 16px 40px; font-size: var(--font-size-lg); }

.btn-block { width: 100%; }

/* Button Group */
.btn-group {
  display: inline-flex;
  gap: 0;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.btn-group .btn + .btn {
  margin-left: -1px;
}

/* --- Cards --- */
.card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.card-text {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height);
  margin-bottom: var(--spacing-base);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg);
}

/* Card with hover lift */
.card-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Horizontal Card */
.card-horizontal {
  display: flex;
  gap: 0;
}

.card-horizontal .card-image {
  width: 280px;
  min-height: 100%;
  aspect-ratio: auto;
  flex-shrink: 0;
}

/* --- Tags / Badges --- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  line-height: 1.6;
}

.tag-primary {
  background-color: rgba(10, 92, 122, 0.1);
  color: var(--color-primary);
}

.tag-secondary {
  background-color: rgba(26, 156, 176, 0.1);
  color: var(--color-secondary);
}

.tag-accent {
  background-color: rgba(255, 107, 74, 0.1);
  color: var(--color-accent);
}

.tag-success {
  background-color: rgba(39, 174, 96, 0.1);
  color: var(--color-success);
}

.tag-warning {
  background-color: rgba(243, 156, 18, 0.1);
  color: var(--color-warning);
}

.tag-error {
  background-color: rgba(231, 76, 60, 0.1);
  color: var(--color-error);
}

/* Badge (count/notification) */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary {
  background-color: var(--color-primary);
  color: #fff;
}

.badge-accent {
  background-color: var(--color-accent);
  color: #fff;
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 92, 122, 0.15);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B7C8A' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.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 rgba(231, 76, 60, 0.15);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* --- Search Bar --- */
.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar input {
  width: 100%;
  padding: 10px 16px 10px 44px;
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background-color: var(--color-bg-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-bar input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(10, 92, 122, 0.1);
}

.search-bar .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-lighter);
  pointer-events: none;
}

/* --- Breadcrumbs --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-lighter);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-light);
}

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

.breadcrumb .separator {
  color: var(--color-border);
  font-size: var(--font-size-xs);
}

.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 500;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background-color: var(--color-bg-white);
  transition: all var(--transition);
}

.pagination a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(10, 92, 122, 0.05);
}

.pagination .active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.pagination .disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* --- Ratings / Stars --- */
.rating {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.rating-star {
  color: var(--color-border);
  font-size: var(--font-size-md);
}

.rating-star.filled {
  color: var(--color-warning);
}

.rating-star.half {
  position: relative;
  color: var(--color-border);
}

.rating-star.half::before {
  content: '\2605';
  position: absolute;
  left: 0;
  width: 50%;
  overflow: hidden;
  color: var(--color-warning);
}

.rating-score {
  margin-left: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
}

/* --- Price Display --- */
.price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-accent);
}

.price .currency {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.price .original {
  font-size: var(--font-size-sm);
  color: var(--color-text-lighter);
  text-decoration: line-through;
  font-weight: 400;
  margin-left: var(--spacing-sm);
}

/* --- Tabs --- */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.tab-item {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-light);
  border: none;
  background: none;
  cursor: pointer;
  position: relative;
  transition: color var(--transition);
}

.tab-item:hover {
  color: var(--color-primary);
}

.tab-item.active {
  color: var(--color-primary);
}

.tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

/* --- Alerts --- */
.alert {
  padding: var(--spacing-base) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-base);
  border: 1px solid transparent;
}

.alert-info {
  background-color: rgba(10, 92, 122, 0.08);
  border-color: rgba(10, 92, 122, 0.2);
  color: var(--color-primary);
}

.alert-success {
  background-color: rgba(39, 174, 96, 0.08);
  border-color: rgba(39, 174, 96, 0.2);
  color: var(--color-success);
}

.alert-warning {
  background-color: rgba(243, 156, 18, 0.08);
  border-color: rgba(243, 156, 18, 0.2);
  color: var(--color-warning);
}

.alert-error {
  background-color: rgba(231, 76, 60, 0.08);
  border-color: rgba(231, 76, 60, 0.2);
  color: var(--color-error);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

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

.modal {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-lighter);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.modal-close:hover {
  background-color: var(--color-bg-gray);
  color: var(--color-text);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

/* --- Loading Spinner --- */
.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

/* --- Avatar --- */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-gray);
  color: var(--color-text-light);
  font-weight: 600;
  overflow: hidden;
  flex-shrink: 0;
}

.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-sm); }
.avatar-md { width: 48px; height: 48px; font-size: var(--font-size-lg); }
.avatar-lg { width: 64px; height: 64px; font-size: var(--font-size-xl); }
.avatar-xl { width: 96px; height: 96px; font-size: var(--font-size-3xl); }

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

/* --- Tooltip --- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  font-size: var(--font-size-xs);
  color: #fff;
  background-color: var(--color-text);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

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

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

.skeleton-text {
  height: 16px;
  margin-bottom: var(--spacing-sm);
}

.skeleton-title {
  height: 24px;
  width: 60%;
  margin-bottom: var(--spacing-md);
}

.skeleton-image {
  aspect-ratio: 16 / 9;
  width: 100%;
}

/* --- Scroll to Top --- */
.scroll-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-3px);
}