/**
 * Barcodes Generator - Layout CSS
 * Sticky navigation, Mega-Dropdown, Mobile drawer, Ad slots (CLS-safe), Breadcrumbs, Footer
 */

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.container-narrow {
  max-width: 900px;
}

.container-wide {
  max-width: 1400px;
}

.main-content {
  flex: 1 0 auto;
}

/* Sections */
.section {
  padding-top: var(--spacing-12);
  padding-bottom: var(--spacing-12);
}

.section-sm {
  padding-top: var(--spacing-6);
  padding-bottom: var(--spacing-6);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--spacing-10) auto;
}

.section-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

/* Header & Sticky Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--spacing-4);
}

/* Brand Logo */
.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
}

.site-brand:hover {
  text-decoration: none;
}

.site-brand img,
.site-brand svg {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.site-brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  line-height: 1.1;
  font-weight: var(--font-weight-extrabold);
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Desktop Nav */
.desktop-nav {
  display: none;
}

@media (min-width: 992px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
  }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  color: var(--text-muted);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-main);
  background-color: var(--bg-surface-subtle);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* Mega Dropdown for Tools */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  background: none;
  border: none;
  cursor: pointer;
}

.nav-dropdown-toggle svg {
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-toggle svg,
.nav-dropdown:focus-within .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: min(1080px, 92vw);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-6);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  z-index: 1010;
}

.nav-dropdown:hover .mega-menu,
.nav-dropdown:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-column-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-3);
  padding-bottom: var(--spacing-2);
  border-bottom: 1px solid var(--border-color);
}

.mega-menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mega-menu-list li {
  margin-bottom: 0.35rem;
}

.mega-menu-link {
  display: block;
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.mega-menu-link:hover {
  background-color: var(--bg-surface-subtle);
  text-decoration: none;
}

.mega-item-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-main);
  line-height: 1.3;
}

.mega-item-desc {
  display: block;
  font-size: 0.725rem;
  color: var(--text-subtle);
  margin-top: 0.15rem;
}

.mega-menu-all {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-sm);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

/* Dark/Light Mode Toggle Button */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--border-color);
}

.theme-icon-sun {
  display: none;
}
.theme-icon-moon {
  display: block;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: block;
}
:root[data-theme="dark"] .theme-icon-moon {
  display: none;
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

@media (min-width: 992px) {
  .mobile-nav-toggle {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(380px, 86vw);
  background: var(--bg-surface);
  border-left: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  padding: var(--spacing-6);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-4);
}

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-weight: var(--font-weight-medium);
  font-size: var(--text-base);
  text-decoration: none;
}

.mobile-nav-link:hover {
  background-color: var(--bg-surface-subtle);
  text-decoration: none;
}

.mobile-accordion-content {
  display: none;
  padding-left: 1rem;
  margin-top: 0.5rem;
  border-left: 2px solid var(--border-color);
}

.mobile-accordion.is-expanded .mobile-accordion-content {
  display: block;
}

/* Breadcrumbs Component */
.breadcrumbs-wrapper {
  padding: var(--spacing-3) 0;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-surface-subtle);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-xs);
  color: var(--text-subtle);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.breadcrumb-item a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--text-subtle);
}

.breadcrumb-item[aria-current="page"] {
  color: var(--text-main);
  font-weight: var(--font-weight-semibold);
}

/* CLS-Safe Ad Slot Containers */
.ad-slot-container {
  width: 100%;
  margin: var(--spacing-8) auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--ad-bg);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: min-height var(--transition-fast);
}

.ad-label {
  font-size: 0.65rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
  padding: 0.25rem 0.75rem;
  align-self: flex-start;
  margin: 0.25rem 0 0 0.5rem;
}

.ad-content {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

/* Fixed min-height to guarantee zero Cumulative Layout Shift (CLS) */
.ad-slot-below-tool {
  min-height: 280px;
  max-width: 970px;
}

.ad-slot-mid-article {
  min-height: 280px;
  max-width: 760px;
}

.ad-slot-sidebar {
  min-height: 300px;
  max-width: 336px;
}

/* Footer */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-10);
  margin-bottom: var(--spacing-12);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-col-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-main);
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-brand-p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: var(--spacing-4) 0;
  line-height: 1.6;
}

.footer-trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.footer-disclaimer-box {
  background-color: var(--bg-surface-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  font-size: var(--text-xs);
  color: var(--text-subtle);
  line-height: 1.5;
  margin-bottom: var(--spacing-8);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-xs);
  color: var(--text-subtle);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-legal-links a {
  color: var(--text-subtle);
}
.footer-legal-links a:hover {
  color: var(--color-primary);
}