/* ==============================================
   BRANDS LISTING PAGE STYLES
   Mobile-first, enterprise-grade design
   
   Dependencies: design-tokens.css, Bootstrap 5
   ============================================== */

/* ─────────────────────────────────────────────
   BASE STYLES
   ───────────────────────────────────────────── */

body {
  font-family: var(--font-primary, 'Inter', sans-serif);
  background: var(--bg-page, #f8fafc);
  color: var(--color-gray-800, #1f2937);
  line-height: 1.6;
}

/* ─────────────────────────────────────────────
   PAGE HEADER (Mobile-first)
   ───────────────────────────────────────────── */

.brands-header {
  background: var(--bg-header, linear-gradient(135deg, #6366f1 0%, #4f46e5 100%));
  color: var(--color-white, #ffffff);
  padding: var(--space-5, 1.25rem) 0;
  position: relative;
  overflow: hidden;
}

.brands-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.1) 0%, transparent 70%);
  transform: rotate(15deg);
  pointer-events: none;
}

/* Breadcrumb - Mobile */
.brands-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  font-size: var(--text-xs, 0.75rem);
  margin-bottom: var(--space-3, 0.75rem);
  padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full, 9999px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.breadcrumb-link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color var(--transition-fast, 150ms);
}

.breadcrumb-link:hover {
  color: var(--color-white, #ffffff);
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.5);
}

.breadcrumb-current {
  color: var(--color-white, #ffffff);
  font-weight: var(--font-medium, 500);
}

/* Header Content */
.brands-header-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 0.75rem);
}

.brands-header-info {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3, 0.75rem);
}

.brands-header-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg, 0.75rem);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl, 1.25rem);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brands-header-text {
  flex: 1;
  min-width: 0;
}

.brands-header-title {
  font-size: var(--text-xl, 1.25rem);
  font-weight: var(--font-bold, 700);
  margin: 0 0 var(--space-1, 0.25rem) 0;
  line-height: 1.2;
}

.brands-header-subtitle {
  font-size: var(--text-sm, 0.875rem);
  opacity: 0.85;
  margin: 0;
  display: none; /* Hidden on mobile */
}

/* Header Meta Tags */
.brands-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2, 0.5rem);
  margin-top: var(--space-2, 0.5rem);
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  padding: var(--space-1, 0.25rem) var(--space-2, 0.5rem);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full, 9999px);
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--font-medium, 500);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Header Actions - Mobile */
.brands-header-actions {
  display: none; /* Hidden on mobile, shown in search section */
}

/* ─────────────────────────────────────────────
   SEARCH SECTION (Mobile-first)
   ───────────────────────────────────────────── */

.brands-search-section {
  background: var(--color-white, #ffffff);
  padding: var(--space-4, 1rem);
  border-radius: 0 0 var(--radius-xl, 1rem) var(--radius-xl, 1rem);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.05));
  margin-bottom: var(--space-4, 1rem);
  position: relative;
  z-index: 10;
}

.brands-search-section.sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  border-radius: 0 0 var(--radius-lg, 0.75rem) var(--radius-lg, 0.75rem);
  box-shadow: var(--shadow-lg, 0 10px 25px rgba(0,0,0,0.1));
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Search Input */
.brands-search-input {
  position: relative;
}

.brands-search-input .search-icon {
  position: absolute;
  left: var(--space-3, 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-400, #9ca3af);
  pointer-events: none;
}

.brands-search-input input {
  width: 100%;
  padding: var(--space-3, 0.75rem) var(--space-3, 0.75rem) var(--space-3, 0.75rem) var(--space-10, 2.5rem);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: var(--radius-lg, 0.75rem);
  font-size: var(--text-base, 1rem);
  transition: all var(--transition-fast, 150ms);
}

.brands-search-input input:focus {
  outline: none;
  border-color: var(--color-primary, #6366f1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Filters Row */
.brands-filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3, 0.75rem);
  margin-top: var(--space-3, 0.75rem);
}

.brands-filters select {
  width: 100%;
  padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: var(--radius-md, 0.5rem);
  font-size: var(--text-sm, 0.875rem);
  background: var(--color-white, #ffffff);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms);
}

.brands-filters select:focus {
  outline: none;
  border-color: var(--color-primary, #6366f1);
}

/* Results Count */
.brands-results-count {
  margin-top: var(--space-3, 0.75rem);
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #6b7280);
}

/* ─────────────────────────────────────────────
   BRANDS GRID (Mobile-first)
   ───────────────────────────────────────────── */

.brands-content {
  padding: 0 var(--space-4, 1rem) var(--space-8, 2rem);
}

.brands-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4, 1rem);
}

/* ─────────────────────────────────────────────
   BRAND CARD (Mobile-first)
   ───────────────────────────────────────────── */

.brand-card {
  background: var(--color-white, #ffffff);
  border-radius: var(--radius-xl, 1rem);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,0.05));
  border: 1px solid var(--color-gray-100, #f3f4f6);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal, 200ms);
}

.brand-card:hover {
  box-shadow: var(--shadow-lg, 0 10px 25px rgba(0,0,0,0.1));
  transform: translateY(-2px);
  border-color: var(--color-primary-100, #e0e7ff);
}

/* Brand Logo Container */
.brand-card-logo {
  padding: var(--space-4, 1rem);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-50, #f9fafb);
  min-height: 120px;
}

.brand-card-logo img {
  max-width: 100px;
  max-height: 80px;
  object-fit: contain;
}

/* Brand Card Body */
.brand-card-body {
  padding: var(--space-4, 1rem);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.brand-card-title {
  font-size: var(--text-base, 1rem);
  font-weight: var(--font-semibold, 600);
  color: var(--color-gray-900, #111827);
  margin: 0 0 var(--space-2, 0.5rem) 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-card-description {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #6b7280);
  line-height: 1.5;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-3, 0.75rem);
}

/* Brand Card Footer */
.brand-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2, 0.5rem);
}

.brand-products-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  padding: var(--space-1, 0.25rem) var(--space-2, 0.5rem);
  background: var(--color-primary, #6366f1);
  color: var(--color-white, #ffffff);
  border-radius: var(--radius-full, 9999px);
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--font-semibold, 600);
}

.brand-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
  background: transparent;
  color: var(--color-primary, #6366f1);
  border: 1px solid var(--color-primary, #6366f1);
  border-radius: var(--radius-md, 0.5rem);
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-medium, 500);
  text-decoration: none;
  transition: all var(--transition-fast, 150ms);
}

.brand-card-link:hover {
  background: var(--color-primary, #6366f1);
  color: var(--color-white, #ffffff);
}

/* ─────────────────────────────────────────────
   SKELETON LOADING
   ───────────────────────────────────────────── */

.brand-card-skeleton {
  background: var(--color-white, #ffffff);
  border-radius: var(--radius-xl, 1rem);
  overflow: hidden;
}

.skeleton-logo {
  height: 120px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.skeleton-body {
  padding: var(--space-4, 1rem);
}

.skeleton-title {
  height: 20px;
  width: 60%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm, 0.25rem);
  margin-bottom: var(--space-2, 0.5rem);
}

.skeleton-text {
  height: 14px;
  width: 100%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm, 0.25rem);
  margin-bottom: var(--space-1, 0.25rem);
}

.skeleton-text:last-child {
  width: 70%;
}

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

/* ─────────────────────────────────────────────
   EMPTY STATE
   ───────────────────────────────────────────── */

.brands-empty-state {
  text-align: center;
  padding: var(--space-12, 3rem) var(--space-6, 1.5rem);
  background: var(--color-white, #ffffff);
  border-radius: var(--radius-xl, 1rem);
}

.brands-empty-state i {
  font-size: 3rem;
  color: var(--color-gray-300, #d1d5db);
  margin-bottom: var(--space-4, 1rem);
}

.brands-empty-state h3 {
  font-size: var(--text-lg, 1.125rem);
  color: var(--color-gray-700, #374151);
  margin-bottom: var(--space-2, 0.5rem);
}

.brands-empty-state p {
  color: var(--color-gray-500, #6b7280);
  margin-bottom: var(--space-4, 1rem);
}

/* ─────────────────────────────────────────────
   PAGINATION
   ───────────────────────────────────────────── */

.brands-pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-1, 0.25rem);
  margin-top: var(--space-8, 2rem);
  flex-wrap: wrap;
}

.brands-pagination button,
.brands-pagination .page-link {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2, 0.5rem);
  background: var(--color-white, #ffffff);
  border: 1px solid var(--color-gray-200, #e5e7eb);
  border-radius: var(--radius-md, 0.5rem);
  color: var(--color-gray-700, #374151);
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-medium, 500);
  cursor: pointer;
  transition: all var(--transition-fast, 150ms);
}

.brands-pagination button:hover,
.brands-pagination .page-link:hover {
  background: var(--color-primary, #6366f1);
  border-color: var(--color-primary, #6366f1);
  color: var(--color-white, #ffffff);
}

.brands-pagination button.active,
.brands-pagination .page-link.active {
  background: var(--color-primary, #6366f1);
  border-color: var(--color-primary, #6366f1);
  color: var(--color-white, #ffffff);
}

.brands-pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─────────────────────────────────────────────
   RESPONSIVE - SMALL MOBILE (480px+)
   ───────────────────────────────────────────── */

@media (min-width: 480px) {
  .brands-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ─────────────────────────────────────────────
   RESPONSIVE - TABLET (768px+)
   ───────────────────────────────────────────── */

@media (min-width: 768px) {
  .brands-header {
    padding: var(--space-8, 2rem) 0;
  }
  
  .brands-breadcrumb {
    font-size: var(--text-sm, 0.875rem);
  }
  
  .brands-header-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  
  .brands-header-title {
    font-size: var(--text-2xl, 1.5rem);
  }
  
  .brands-header-subtitle {
    display: block;
  }
  
  .brands-header-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    font-size: var(--text-2xl, 1.5rem);
  }
  
  .brands-header-actions {
    display: flex;
    gap: var(--space-2, 0.5rem);
  }
  
  .brands-search-section {
    padding: var(--space-5, 1.25rem);
  }
  
  .brands-filters {
    grid-template-columns: 1fr 1fr 1fr;
  }
  
  .brands-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5, 1.25rem);
  }
  
  .brand-card-logo {
    min-height: 140px;
  }
  
  .meta-tag {
    font-size: var(--text-sm, 0.875rem);
    padding: var(--space-1, 0.25rem) var(--space-3, 0.75rem);
  }
}

/* ─────────────────────────────────────────────
   RESPONSIVE - DESKTOP (992px+)
   ───────────────────────────────────────────── */

@media (min-width: 992px) {
  .brands-search-section {
    padding: var(--space-6, 1.5rem);
  }
  
  .brands-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6, 1.5rem) var(--space-12, 3rem);
  }
  
  .brands-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ─────────────────────────────────────────────
   RESPONSIVE - LARGE DESKTOP (1200px+)
   ───────────────────────────────────────────── */

@media (min-width: 1200px) {
  .brands-search-section.sticky {
    max-width: 1200px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 0 0 var(--radius-xl, 1rem) var(--radius-xl, 1rem);
  }
}

/* ─────────────────────────────────────────────
   PRINT STYLES
   ───────────────────────────────────────────── */

@media print {
  .brands-header,
  .brands-search-section,
  .brands-pagination {
    display: none !important;
  }
  
  .brands-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
  
  .brand-card {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
    break-inside: avoid;
  }
}