/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
  text-decoration: none;
  line-height: 1.4;
}

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

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

.btn--outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

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

.btn--repair {
  background: var(--color-repair);
  color: var(--color-white);
}

.btn--repair:hover {
  background: #2563eb;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

.btn--cleaning {
  background: #0891b2;
  color: var(--color-white);
}

.btn--cleaning:hover {
  background: #0e7490;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(8, 145, 178, 0.35);
}

.btn--buyback {
  background: var(--color-buyback);
  color: var(--color-white);
}

.btn--buyback:hover {
  background: #059669;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.35);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--accent:hover {
  background: #d97706;
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn--small {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn--full {
  width: 100%;
}

.btn-icon {
  font-size: 1.2em;
}

/* ==========================================================================
   Section Components
   ========================================================================== */
.section {
  padding: var(--spacing-3xl) 0;
}

.section--foam {
  background-color: var(--color-foam);
}

.section--deep {
  background-color: var(--color-deep);
  color: var(--color-white);
}

.section--gray {
  background-color: var(--color-gray-50);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-label {
  display: inline-block;
  padding: 0.25rem 1rem;
  background: rgba(7, 87, 91, 0.1);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--color-wave);
  margin: 0 auto var(--spacing-sm);
  border-radius: 2px;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
}

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

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

/* ==========================================================================
   Washer Card (Archive)
   ========================================================================== */
.washer-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.washer-card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-gray-100);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.washer-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--spacing-sm);
}

.washer-card-badge {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.washer-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  line-height: 1.3;
}

.washer-badge--type {
  background: var(--color-primary);
  color: var(--color-white);
}

.washer-badge--capacity {
  background: var(--color-wave);
  color: var(--color-white);
}

.washer-badge--dryer {
  background: var(--color-accent);
  color: var(--color-white);
}

.washer-badge--year {
  background: var(--color-deep);
  color: var(--color-white);
}

.product-year {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--color-deep);
  font-weight: 600;
  margin-top: var(--spacing-xs);
}

.washer-card-body {
  padding: var(--spacing-sm);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.washer-card-maker {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: 0.25rem;
}

.washer-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-deep);
  margin-bottom: 0.5rem;
}

.washer-card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.washer-card-spec {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.washer-card-spec strong {
  color: var(--color-deep);
}

.washer-card-rating {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}

.washer-card-stars {
  font-size: 0.85rem;
  letter-spacing: 1px;
  line-height: 1;
}

.washer-card-score {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-deep);
}

.washer-card-price {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding: 0.5rem 0.6rem;
  background: linear-gradient(135deg, #fff5f5, #fed7d7);
  border-radius: var(--border-radius-sm);
  border: 1px solid #feb2b2;
}

.washer-card-price-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: #c53030;
  letter-spacing: 0.02em;
}

.washer-card-price-value {
  font-size: 1.15rem;
  font-weight: 800;
  color: #c53030;
  letter-spacing: -0.02em;
}

.washer-card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

.washer-card-actions .btn {
  flex: 1;
  font-size: var(--font-size-sm);
  padding: 0.5rem;
}

/* ==========================================================================
   Filter Sidebar
   ========================================================================== */
.filter-sidebar {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md);
  position: sticky;
  top: calc(var(--header-height) + var(--spacing-sm));
  max-height: calc(100vh - var(--header-height) - var(--spacing-md));
  overflow-y: auto;
}

.filter-group {
  margin-bottom: var(--spacing-md);
}

.filter-group:last-child {
  margin-bottom: 0;
}

summary.filter-group-title,
.filter-group-title {
  cursor: pointer;
  list-style: none;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-deep);
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-foam);
}

summary.filter-group-title::-webkit-details-marker { display: none; }
summary.filter-group-title::after { content: '▾'; float: right; }
details[open] > summary.filter-group-title::after { content: '▴'; }

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  cursor: pointer;
}

.filter-option input[type="checkbox"],
.filter-option input[type="radio"] {
  accent-color: var(--color-primary);
}

.filter-option-count {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--color-gray-500);
  background: var(--color-gray-100);
  padding: 0.1rem 0.4rem;
  border-radius: var(--border-radius-sm);
}

.filter-reset {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  cursor: pointer;
  margin-top: var(--spacing-sm);
  padding: 0.5rem 0;
}

.filter-reset:hover {
  color: var(--color-primary);
}

/* Mobile filter toggle */
.filter-toggle {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  color: var(--color-deep);
  margin-bottom: var(--spacing-sm);
}

@media (min-width: 1024px) {
  .filter-toggle {
    display: none;
  }

  .filter-sidebar {
    display: block !important;
  }
}

.filter-option--more { display: none; }
.filter-options.is-expanded .filter-option--more { display: flex; }
.filter-more-toggle { background: none; border: 0; color: var(--color-primary); font-size: var(--font-size-sm); padding: 0.25rem 0; cursor: pointer; text-align: left; }
.filter-submit { position: sticky; bottom: 0; background: var(--color-white); padding-top: var(--spacing-sm); margin-top: var(--spacing-sm); border-top: 1px solid var(--color-gray-200); display: flex; flex-direction: column; gap: 0.25rem; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: var(--spacing-sm); }
.filter-chip { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.25rem 0.75rem; border-radius: 999px; background: var(--color-foam); color: var(--color-deep); font-size: var(--font-size-sm); text-decoration: none; }
.filter-chip--clear { background: transparent; border: 1px solid var(--color-gray-300); color: var(--color-gray-600); }

/* ==========================================================================
   Blog / News Cards
   ========================================================================== */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  text-decoration: none;
}

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

.blog-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-gray-100);
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: var(--spacing-sm);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card-category {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background: var(--color-foam);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  margin-bottom: 0.5rem;
  align-self: flex-start;
}

.blog-card-category.is-washer {
  background: #dbeafe;
  color: #1d4ed8;
}

.blog-card-category.is-aircon {
  background: #fee2e2;
  color: #b91c1c;
}

.blog-card-category.is-fridge {
  background: #dcfce7;
  color: #15803d;
}

.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.blog-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1.1rem;
  background: #fff;
  color: var(--color-gray-700, #374151);
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: 999px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.blog-filter-btn:hover {
  background: var(--color-foam, #f0f9ff);
  border-color: var(--color-primary, #0ea5e9);
  color: var(--color-primary, #0ea5e9);
}

.blog-filter-btn.is-active {
  background: var(--color-primary, #0ea5e9);
  color: #fff;
  border-color: var(--color-primary, #0ea5e9);
}

.blog-filter-btn.is-washer.is-active {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.blog-filter-btn.is-aircon.is-active {
  background: #b91c1c;
  border-color: #b91c1c;
}

.blog-filter-btn.is-fridge.is-active {
  background: #15803d;
  border-color: #15803d;
}

.blog-filter-count {
  font-size: 0.8rem;
  opacity: 0.85;
  font-weight: 500;
}

.blog-count-top,
.blog-count-bottom {
  text-align: center;
  color: var(--color-gray-600, #4b5563);
  font-size: 0.9rem;
  margin: 0.75rem 0 1.25rem;
}

.blog-count-top strong,
.blog-count-bottom strong {
  color: var(--color-deep, #0c4a6e);
  font-size: 1.05em;
}

.blog-count-bottom {
  margin: 1.5rem 0 1rem;
}

.blog-card-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-deep);
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.blog-card-meta {
  font-size: 0.75rem;
  color: var(--color-gray-500);
  margin-top: auto;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   No Image Placeholder
   ========================================================================== */
.no-image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: var(--color-gray-100);
  color: var(--color-gray-300);
  font-size: 3rem;
}

/* ==========================================================================
   Product Tabs (Front Page section tabs)
   ========================================================================== */
.product-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: var(--spacing-lg);
}
.product-tab {
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-full);
  background: var(--color-white);
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.product-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.product-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}
.product-tab-panel {
  display: none;
}
.product-tab-panel.is-active {
  display: block;
}

/* ==========================================================================
   Model Card (plan4)
   ========================================================================== */
.model-card-title {
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.model-card-year {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-gray-500);
  margin-bottom: 0.25rem;
}

.model-card-score {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  font-size: 0.75rem;
  color: var(--color-gray-600, #555);
  margin: 0.25rem 0;
}

.model-card-score strong {
  color: var(--color-primary);
}