/* ===========================
   Design Tokens
   =========================== */
:root {
  /* Primary — fresh greens */
  --color-primary-dark: #1b4332;
  --color-primary: #2d6a4f;
  --color-primary-hover: #40916c;
  --color-primary-light: #d8f3dc;

  /* Neutrals */
  --color-bg: #f8f9fa;
  --color-card: #ffffff;
  --color-text: #212529;
  --color-text-muted: #495057;
  --color-text-light: #adb5bd;
  --color-border: #dee2e6;
  --color-border-light: #e9ecef;
  --color-placeholder-bg: #f1f3f5;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;

  /* Layout */
  --header-height: 60px;
  --sidebar-width: 220px;
}

/* ===========================
   Base
   =========================== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===========================
   Site Header
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-primary-dark);
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  gap: var(--space-lg);
}

.site-logo {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.site-logo span {
  color: var(--color-primary-light);
  font-weight: 400;
}

.header-search {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.header-search input {
  width: 100%;
  padding: 8px 16px 8px 40px;
  border: none;
  border-radius: 100px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 0.875rem;
  outline: none;
  transition: background var(--transition-fast);
}

.header-search input::placeholder {
  color: rgba(255,255,255,0.6);
}

.header-search input:focus {
  background: rgba(255,255,255,0.25);
}

.header-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
  pointer-events: none;
}

/* ===========================
   Category Selector
   =========================== */
.category-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.category-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-size: cover;
  background-position: center;
  background-color: var(--color-placeholder-bg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
}

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

.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
}

.category-card-name {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.category-card-count {
  color: rgba(255,255,255,0.75);
  font-size: 0.875rem;
  margin-top: 4px;
}

/* ===========================
   Back Button
   =========================== */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.back-btn:hover {
  background: var(--color-bg);
  border-color: var(--color-text-light);
}

/* ===========================
   Items Toolbar
   =========================== */
.items-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.sidebar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
}

/* ===========================
   Items Layout (sidebar + grid)
   =========================== */
.items-layout {
  display: flex;
  gap: var(--space-lg);
}

.items-grid-area {
  flex: 1;
  min-width: 0;
}

/* ===========================
   Sidebar
   =========================== */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  background: var(--color-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-sm) 0;
  font-size: 0.85rem;
  align-self: flex-start;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

.sidebar-link {
  display: block;
  padding: 8px var(--space-md);
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}

.sidebar-link:hover {
  background: var(--color-bg);
  color: var(--color-primary);
  border-left-color: var(--color-primary-hover);
}

.sidebar-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-primary);
}

.sidebar-link[data-filter="all"] {
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 10px;
  margin-bottom: var(--space-xs);
}

.sidebar-overlay {
  display: none;
}

/* ===========================
   Content Area
   =========================== */
.content-area {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-lg);
}

.content-header {
  margin-bottom: var(--space-lg);
}

.content-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.content-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.results-count {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.active-filter-pill {
  display: none;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
}

.active-filter-pill.visible {
  display: inline-flex;
}

.active-filter-pill button {
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.active-filter-pill button:hover {
  opacity: 1;
}

/* ===========================
   Card Grid
   =========================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-lg);
}

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

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

.card a {
  display: block;
}

.card-image {
  aspect-ratio: 1;
  background-color: var(--color-placeholder-bg);
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  position: relative;
}

.card-image.no-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image.no-image::after {
  content: 'No image';
  font-size: 0.75rem;
  color: var(--color-text-light);
  opacity: 0.6;
}

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

.card-plu {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.card-commodity {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 2px;
}

.card-variety {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-size {
  font-size: 0.7rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* ===========================
   Commodity Page
   =========================== */
.commodity-page {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  overflow: hidden;
  background: var(--color-placeholder-bg);
}

.commodity-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.commodity-page.no-image::after {
  content: 'No image available';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 1rem;
}

.commodity-overlay {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  flex-direction: column;
}

.commodity-breadcrumb {
  padding: var(--space-md) var(--space-lg);
}

.commodity-breadcrumb a {
  display: inline-block;
  background: #fff;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.commodity-breadcrumb a:hover {
  background: var(--color-primary);
  color: #fff;
}

.commodity-headline {
  padding: 0 var(--space-lg);
  margin-bottom: auto;
}

.commodity-title {
  display: inline-block;
  background: var(--color-primary-dark);
  padding: 12px 24px;
  margin: 0;
}

.commodity-title h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  color: #fff;
  margin: 0;
}

.commodity-detail {
  font-size: 0.85rem;
  font-style: italic;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  margin: 6px 0 0;
}

.commodity-meta-card {
  align-self: flex-end;
  width: 240px;
  background: #fff;
  margin: auto var(--space-lg) var(--space-lg) auto;
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

.commodity-plu-badge {
  display: block;
  text-align: center;
  background: var(--color-primary-dark);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.04em;
}

.commodity-details {
  list-style: none;
  padding: 0;
  margin: 0;
}

.commodity-details li {
  display: flex;
  flex-direction: column;
  padding: 10px 0;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.85rem;
}

.commodity-details .detail-label {
  color: var(--color-text-light);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.commodity-details .detail-value {
  color: var(--color-text);
  font-weight: 500;
}

/* ===========================
   Responsive
   =========================== */

/* Tablet */
@media (max-width: 1023px) {
  .category-selector {
    grid-template-columns: repeat(2, 1fr);
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: var(--header-height);
    z-index: 90;
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    border-radius: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    top: var(--header-height);
    background: rgba(0,0,0,0.3);
    z-index: 80;
  }

  .sidebar-overlay.visible {
    display: block;
  }

  .sidebar-toggle {
    display: inline-flex;
  }

  .commodity-meta-card {
    width: 200px;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .site-header {
    padding: 0 var(--space-md);
    gap: var(--space-md);
  }

  .content-area {
    padding: var(--space-md);
  }

  .category-selector {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .category-card-name {
    font-size: 1.1rem;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

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

  .card-commodity {
    font-size: 0.85rem;
  }

  .content-header h1 {
    font-size: 1.25rem;
  }

  .commodity-breadcrumb {
    padding: var(--space-sm) var(--space-md);
  }

  .commodity-headline {
    padding: 0 var(--space-md);
  }

  .commodity-title {
    padding: 10px 16px;
  }

  .commodity-title h1 {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
  }

  .commodity-meta-card {
    width: auto;
    align-self: stretch;
    margin: auto var(--space-md) var(--space-md);
    border-radius: var(--radius-sm);
  }
}