/* Reset & Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-dark-200);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Accessibility Control Panel */
.accessibility-bar {
  background: var(--bg-dark-100);
  border-bottom: 1px solid var(--border-light);
  padding: 0.5rem var(--spacing-6);
  font-size: var(--text-xs);
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--spacing-4);
  z-index: 1001;
  position: relative;
}

.accessibility-bar button {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-title);
  transition: all var(--transition-fast);
}

.accessibility-bar button:hover,
.accessibility-bar button:focus {
  border-color: var(--primary);
  color: var(--text-primary);
  outline: none;
}

/* Header & Navigation */
header.header-premium {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: var(--z-header);
  border-bottom: 1px solid var(--border-light);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--spacing-6);
  max-width: var(--max-width-site);
  margin: 0 auto;
}

.logo-link {
  text-decoration: none;
  font-family: var(--font-title);
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: var(--spacing-6);
}

.nav-item {
  position: relative;
}

.nav-link {
  text-decoration: none;
  color: var(--text-secondary);
  font-family: var(--font-title);
  font-weight: 500;
  font-size: var(--text-sm);
  padding: var(--spacing-2) 0;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.nav-link:hover,
.nav-link:focus,
.nav-item:hover > .nav-link {
  color: var(--primary);
}

/* Mega Menu Styles */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 600px;
  background: var(--bg-dark-300);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  padding: var(--spacing-6);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  z-index: var(--z-dropdown);
}

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

.mega-column h4 {
  font-family: var(--font-title);
  color: var(--primary);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.mega-column ul {
  list-style: none;
}

.mega-column ul li {
  margin-bottom: var(--spacing-2);
}

.mega-column ul li a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.mega-column ul li a:hover,
.mega-column ul li a:focus {
  color: var(--text-primary);
}

/* Breadcrumb */
.breadcrumb-container {
  padding: var(--spacing-4) 0;
  background: var(--bg-dark-100);
  border-bottom: 1px solid var(--border-light);
}

.breadcrumb-list {
  display: flex;
  list-style: none;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  padding: 0 var(--spacing-2);
  color: var(--text-muted);
}

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

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

.breadcrumb-item.active {
  color: var(--primary);
  font-weight: 500;
}

/* Footer Section */
footer.footer-premium {
  background-color: var(--bg-dark-100);
  border-top: 1px solid var(--border-light);
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-10);
  margin-bottom: var(--spacing-12);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: var(--spacing-4);
  max-width: 320px;
}

.footer-column h4 {
  font-family: var(--font-title);
  color: var(--text-primary);
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

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

.footer-links a:hover,
.footer-links a:focus {
  color: var(--primary);
}

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

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

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

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

/* Navigation Hamburger */
.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Accordion FAQs */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-4);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--transition-fast);
}

.faq-item:focus-within,
.faq-item:hover {
  border-color: var(--primary);
}

.faq-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) var(--spacing-6);
  background: transparent;
  border: none;
  text-align: left;
  color: var(--text-primary);
  font-family: var(--font-title);
  font-weight: 600;
  font-size: var(--text-lg);
  cursor: pointer;
}

.faq-icon {
  transition: transform var(--transition-normal);
  fill: var(--primary);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out;
}

.faq-content {
  padding: 0 var(--spacing-6) var(--spacing-6) var(--spacing-6);
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* Return to top button */
.return-top-btn {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  z-index: 99;
}

.return-top-btn.visible {
  opacity: 1;
  visibility: visible;
}

.return-top-btn:hover {
  transform: translateY(-4px) scale(1.05);
}

.return-top-btn svg {
  fill: var(--text-dark);
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 80%;
}

.lightbox-image {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

.lightbox-caption {
  text-align: center;
  color: var(--text-primary);
  margin-top: var(--spacing-4);
  font-family: var(--font-title);
  font-size: var(--text-lg);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 2rem;
  cursor: pointer;
}

.lightbox-prev, .lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: background var(--transition-fast);
}

.lightbox-prev:hover, .lightbox-next:hover {
  background: var(--primary);
  color: var(--text-dark);
}

.lightbox-prev { left: -60px; }
.lightbox-next { right: -60px; }

@media (max-width: 768px) {
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}