/* ============================================
   LAYOUT - Sidebar, Grid, Footer, Responsive
   ============================================ */

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ---- SIDEBAR (Desktop) ---- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar__top {
  padding: var(--space-xl) var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}

.sidebar__logo {
  font-family: var(--font-logo);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 2px;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.sidebar__logo a {
  display: block;
}

.sidebar__logo-img {
  width: 100%;
  max-width: 180px;
  border-radius: var(--space-md);
}

/* Sidebar Search */
.sidebar__search {
  display: flex;
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.sidebar__search-input {
  flex: 1;
  border: none;
  background: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
  min-width: 0;
}

.sidebar__search-input::placeholder {
  color: var(--color-primary-light);
}

.sidebar__search-btn {
  padding: var(--space-sm) var(--space-md);
  color: var(--color-white);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  transition: background var(--transition-fast);
}

.sidebar__search-btn:hover {
  background: var(--color-primary-light);
}

/* Sidebar Nav */
.sidebar__nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md) 0;
}

.sidebar__section {
  padding: 0 var(--space-lg);
  margin-bottom: var(--space-xs);
}

.sidebar__section-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--space-sm) 0;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.sidebar__section-title:hover {
  color: var(--color-accent);
}

.sidebar__submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.sidebar__section:hover .sidebar__submenu,
.sidebar__section.is-open .sidebar__submenu {
  max-height: 500px;
}

.sidebar__link {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  padding: 4px 0 4px var(--space-md);
  transition: color var(--transition-fast);
}

.sidebar__link:hover {
  color: var(--color-accent);
}

/* Sidebar Bottom */
.sidebar__bottom {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--space-md);
}

.sidebar__action {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.sidebar__bottom-wrap {
  border-top: 1px solid var(--color-border-light);
}

.sidebar__auth {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg) 0;
}

.sidebar__user {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* Cart Badge */
.cart-badge {
  position: relative;
}

.cart-badge__count {
  position: absolute;
  top: -6px;
  right: -8px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 10px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- MOBILE TOP BAR ---- */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  padding: 0 var(--space-lg);
  align-items: center;
  justify-content: space-between;
}

.mobile-topbar__logo {
  font-family: var(--font-logo);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 1px;
}

.mobile-topbar__cart {
  color: var(--color-text);
  position: relative;
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  transition: transform var(--transition-base);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 300;
}

.mobile-overlay.is-active {
  display: block;
}

/* ---- MAIN CONTENT (offset by sidebar) ---- */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

.page-section {
  padding: var(--space-3xl) 0;
}

.page-section--alt {
  background: var(--color-bg-alt);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.section-header__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Breadcrumb */
.breadcrumb {
  padding: var(--space-md) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb__separator {
  margin: 0 var(--space-sm);
}

/* ---- PRODUCT GRID ---- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

/* ---- FOOTER (also offset by sidebar) ---- */
.site-footer {
  margin-left: var(--sidebar-width);
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand__logo {
  margin-bottom: var(--space-md);
}

.footer-brand__logo-img {
  max-width: 180px;
  border-radius: var(--space-md);
}

.footer-brand__desc {
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-footer-text);
}

.footer-col__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md);
}

.footer-col__link {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-footer-text);
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.footer-col__link:hover {
  color: var(--color-accent);
}

.site-footer__bottom {
  padding-top: var(--space-xl);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---- PAGINATION ---- */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-4xl);
}

.pagination__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.pagination__link:hover,
.pagination__link--active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .site-footer__top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* Hide desktop sidebar, show mobile bar */
  .sidebar {
    position: fixed;
    left: -100%;
    z-index: 301;
    transition: left var(--transition-base);
  }

  .sidebar.is-active {
    left: 0;
  }

  .sidebar__submenu {
    max-height: none;
  }

  .mobile-topbar {
    display: flex;
  }

  .main-content {
    margin-left: 0;
  }

  .site-footer {
    margin-left: 0;
  }

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

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .section-header__title {
    font-size: var(--text-2xl);
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}