/* ============================================
   CATEGORIES - BASIC THEME
   ============================================ */

:root {
  /* CORE THEME VARIABLES - Base Colors */
  --theme-primary-color: var(--cat-primary);
  --theme-secondary-color: var(--cat-secondary);
  --theme-accent-color: var(--cat-accent);
  --theme-background-color: var(--cat-background);
  --theme-text-color: var(--cat-text);
  --theme-font-family: var(--cat-font-family);

  /* DERIVED COLOR VARIABLES - Basic Theme */
  --cat-primary: var(--theme-primary-color);
  --cat-primary-600: var(--theme-secondary-color);
  --cat-primary-50: color-mix(in srgb, var(--theme-primary-color) 10%, #ffffff);
  
  --cat-secondary: var(--theme-secondary-color);
  --cat-secondary-600: color-mix(in srgb, var(--theme-secondary-color) 80%, #000000);
  --cat-secondary-50: color-mix(in srgb, var(--theme-secondary-color) 10%, #ffffff);
  
  --cat-accent: var(--theme-accent-color);
  --cat-accent-600: color-mix(in srgb, var(--theme-accent-color) 80%, #000000);
  --cat-accent-50: color-mix(in srgb, var(--theme-accent-color) 10%, #ffffff);
  
  --cat-bg-main: #ffffff;
  --cat-bg-secondary: var(--theme-background-color);
  --cat-bg-tertiary: color-mix(in srgb, var(--theme-background-color) 80%, #ffffff);
  
  --cat-text-primary: var(--theme-text-color);
  --cat-text-secondary: color-mix(in srgb, var(--theme-text-color) 50%, #ffffff);
  --cat-text-light: color-mix(in srgb, var(--theme-text-color) 30%, #ffffff);
  --cat-text-lighter: color-mix(in srgb, var(--theme-text-color) 20%, #ffffff);
  
  --cat-border: color-mix(in srgb, var(--theme-text-color) 10%, #ffffff);
  --cat-border-light: color-mix(in srgb, var(--theme-text-color) 5%, #ffffff);
  --cat-shadow: rgba(0, 0, 0, 0.08);
  --cat-shadow-lg: rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --cat-transition-base: 0.3s ease;
  --cat-transition-fast: 0.15s ease;
  --cat-transition-slow: 0.5s ease;
}

/* ============================================
   CATEGORIES SECTION HEADER
   ============================================ */

.categories-section {
  padding: 60px 0 80px;
}

.categories-container {
  margin: 0 30px;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

.categories-header {
  text-align: center;
  margin-bottom: 60px;
  padding: 0;
}

.categories-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0 0 20px;
  color: var(--cat-text-primary);
}

.categories-description {
  font-size: 1rem;
  color: var(--cat-text-light);
  margin: 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   SEARCH & FILTER CONTROLS
   ============================================ */

.categories-controls {
  margin-bottom: 60px;
  display: flex;
  justify-content: center;
  padding: 0;
}

.search-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.search-input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  border: 1px solid var(--cat-border);
  border-radius: 8px;
  font-size: 0.95rem;
  background: var(--cat-bg-main);
  color: var(--cat-text-primary);
  transition: all var(--cat-transition-base);
}

.search-input::placeholder {
  color: var(--cat-text-light);
}

.search-input:focus {
  outline: none;
  border-color: var(--cat-primary);
  box-shadow: 0 0 0 3px var(--cat-primary-50);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  pointer-events: none;
}

/* ============================================
   CATEGORIES GRID
   ============================================ */

.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: stretch;
  padding: 0;
  max-width: 100%;
  margin: 0;
}

@media (min-width: 640px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
    padding: 0;
  }
}

@media (min-width: 1000px) {
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 56px;
    padding: 0;
  }
}

/* ============================================
   CATEGORY CARD
   ============================================ */

.category-card {
  background: var(--cat-bg-main);
  border: 1px solid var(--cat-border);
  border-radius: 12px;
  padding: 32px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all var(--cat-transition-base);
  height: 100%;
  box-shadow: 0 4px 12px var(--cat-shadow);
  overflow: hidden;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px var(--cat-shadow-lg);
  border-color: var(--cat-primary);
}

.category-icon {
  font-size: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--cat-primary-50), var(--cat-accent-50));
  border-radius: 10px;
}

.category-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
  display: block;
}

.category-icon:has(img) {
  width: calc(100% + 64px);
  height: 200px;
  margin: -32px -32px 0 -32px;
  border-radius: 12px 12px 0 0;
  background: transparent;
  overflow: hidden;
}

.category-icon:has(img) img {
  width: 100%;
  height: 100%;
  border-radius: 12px 12px 0 0;
}

.category-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.category-name {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--cat-text-primary);
}

.category-description {
  font-size: 0.95rem;
  color: var(--cat-text-secondary);
  line-height: 1.6;
  margin: 0 0 16px;
  flex: 1;
}

.category-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid var(--cat-border);
}

.category-count {
  font-size: 0.9rem;
  color: var(--cat-text-light);
}

.category-count strong {
  color: var(--cat-primary);
  font-weight: 700;
}

/* ============================================
   BACK BUTTON
   ============================================ */

.back-to-catalogue-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.3);
  color: #000;
  border: 2px solid #000;
  text-decoration: none;
  border-radius: 8px;
  transition: all var(--cat-transition-base);
  margin-bottom: 24px;
}

.back-to-catalogue-btn:hover {
  background: rgba(255, 255, 255, 0.5);
  color: #000 !important;
  border-color: #000 !important;
  transform: translateX(-2px);
}

/* ============================================
   LOAD MORE BUTTON & LOADING INDICATOR
   ============================================ */

#load-more-container {
  text-align: center;
  padding: 40px 0;
  margin-top: 40px;
}

#load-more-btn {
  padding: 14px 48px;
  background: rgba(255, 255, 255, 0.3);
  color: #000;
  border: 2px solid #000;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--cat-transition-base);
}

#load-more-btn:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

#load-more-btn:active {
  transform: translateY(0);
}

#loading-indicator {
  text-align: center;
  padding: 24px;
  display: none;
}

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid #f3f4f6;
  border-top: 4px solid var(--cat-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loading-indicator p {
  margin-top: 12px;
  color: var(--cat-text-secondary);
}

/* ============================================
   NO RESULTS MESSAGE
   ============================================ */

.no-results-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 40px;
  text-align: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--cat-bg-secondary) 0%, var(--cat-bg-tertiary) 100%);
  border: 2px dashed var(--cat-border);
  margin: 0;
}

.no-results-icon {
  font-size: 56px;
  margin-bottom: 24px;
}

.no-results-message h3 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--cat-text-primary);
}

.no-results-message p {
  font-size: 1rem;
  color: var(--cat-text-light);
  margin: 0;
  max-width: 400px;
}

.no-results-initial {
  display: flex;
  text-align: center;
  width: 100%;
}

.no-results-search {
  display: none;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
  .categories-section {
    padding: 40px 0 60px;
  }

  .categories-container {
    margin: 0 20px;
  }

  .categories-title {
    font-size: 2rem;
    margin-bottom: 16px;
  }

  .categories-header {
    margin-bottom: 40px;
  }

  .categories-controls {
    margin-bottom: 40px;
  }

  .category-card {
    padding: 24px;
  }

  .no-results-message {
    padding: 80px 20px;
    margin: 0;
  }
}

@media (max-width: 480px) {
  .categories-section {
    padding: 30px 0 50px;
  }

  .categories-container {
    margin: 0 15px;
  }

  .categories-title {
    font-size: 1.6rem;
  }

  .categories-header {
    margin-bottom: 30px;
  }

  .categories-controls {
    margin-bottom: 30px;
  }

  .categories-grid {
    gap: 24px;
  }

  .category-card {
    padding: 20px;
    gap: 16px;
  }

  .category-icon {
    width: 70px;
    height: 70px;
  }

  .category-icon:has(img) {
    width: calc(100% + 40px);
    margin: -20px -20px 0 -20px;
  }

  .category-name {
    font-size: 1.15rem;
  }

  .no-results-message {
    padding: 60px 15px;
    margin: 0;
  }
}