/* ============================================
   Four C Agricultural Limited
   Left Sidebar Category Navigation
   Desktop: permanent sticky sidebar (22% width)
   Mobile:  hidden — uses off-canvas fallback
   ============================================ */

/* === Page Layout: Sidebar + Main Content === */
.page-layout {
  display: flex;
  gap: 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0;
  align-items: flex-start;
}

/* === Permanent Sidebar (Desktop) === */
.sidebar-main {
  width: 260px;
  min-width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--header-height) + var(--topbar-height) + var(--space-lg));
  max-height: calc(100vh - var(--header-height) - var(--topbar-height) - var(--space-2xl));
  overflow-y: auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  margin-left: var(--space-lg);
  margin-top: var(--space-lg);
  z-index: 10;

  /* Scrollbar styling */
  scrollbar-width: thin;
  scrollbar-color: var(--color-light-gray) transparent;
}

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

.sidebar-main::-webkit-scrollbar-track {
  background: transparent;
}

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

/* Sidebar Header */
.sidebar-main .sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 2;
}

.sidebar-main .sidebar-header h3 {
  color: var(--color-white);
  font-size: 0.95rem;
  font-family: var(--font-body);
  font-weight: 600;
  margin: 0;
}

.sidebar-main .sidebar-close {
  display: none; /* Hidden on desktop */
}

/* Sidebar Navigation */
.sidebar-main .sidebar-nav {
  padding: var(--space-xs) 0;
}

.sidebar-main .sidebar-category {
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar-main .sidebar-cat-toggle {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-sm) var(--space-lg);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-text);
  transition: all var(--transition-fast);
  gap: var(--space-sm);
  text-align: left;
}

.sidebar-main .sidebar-cat-toggle:hover {
  background: var(--color-primary-lighter);
  color: var(--color-primary);
}

.sidebar-main .sidebar-cat-toggle[aria-expanded="true"] {
  background: var(--color-primary-lighter);
  color: var(--color-primary);
  font-weight: 600;
}

.sidebar-main .cat-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

.sidebar-main .cat-name {
  flex: 1;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-main .cat-count {
  font-size: 0.7rem;
  background: var(--color-off-white);
  color: var(--color-mid-gray);
  padding: 1px 7px;
  border-radius: var(--radius-full);
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar-main .sidebar-cat-toggle .chevron {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
  color: var(--color-mid-gray);
  width: 14px;
  height: 14px;
}

.sidebar-main .sidebar-cat-toggle[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

/* Sidebar Products (dropdown) */
.sidebar-main .sidebar-products {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: var(--color-cream);
}

.sidebar-main .sidebar-products.open {
  max-height: 400px;
}

.sidebar-main .sidebar-products a {
  display: block;
  padding: var(--space-xs) var(--space-lg);
  padding-left: calc(var(--space-lg) + 24px + var(--space-sm));
  font-size: 0.8rem;
  color: var(--color-text-light);
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-main .sidebar-products a:hover,
.sidebar-main .sidebar-products a.active {
  color: var(--color-primary);
  background: var(--color-primary-lighter);
  border-left-color: var(--color-gold);
}

/* Sidebar Footer */
.sidebar-main .sidebar-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  background: var(--color-white);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.sidebar-main .sidebar-view-all {
  display: block;
  text-align: center;
  width: 100%;
  font-size: 0.85rem;
  padding: var(--space-sm) var(--space-md);
}

/* Sidebar WhatsApp CTA */
.sidebar-wa-cta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  margin: var(--space-sm) var(--space-sm) 0;
  background: #25D366;
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar-wa-cta:hover {
  background: #20bd5a;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.sidebar-wa-cta svg {
  flex-shrink: 0;
}

/* === Main Content Area === */
.content-main {
  flex: 1;
  min-width: 0; /* Prevent flex overflow */
  padding: 0 var(--space-lg);
}

/* === Mobile: Hide permanent sidebar, use off-canvas === */
.sidebar-mobile-toggle {
  display: none;
}

@media (max-width: 1024px) {
  .page-layout {
    flex-direction: column;
    padding: 0;
  }

  .sidebar-main {
    display: none; /* Hidden on tablet/mobile */
  }

  .content-main {
    padding: 0;
  }

  /* Show mobile sidebar toggle button */
  .sidebar-mobile-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    margin: var(--space-md) var(--space-md) 0;
    transition: background var(--transition-fast);
  }

  .sidebar-mobile-toggle:hover {
    background: var(--color-primary-dark);
  }

  .sidebar-mobile-toggle svg {
    flex-shrink: 0;
  }

  /* Off-canvas sidebar takes over on mobile — already styled in premium.css */
}

@media (max-width: 768px) {
  .sidebar-mobile-toggle {
    margin: var(--space-sm) var(--space-sm) 0;
  }
}