/* ==========================================================================
   Header & Sticky Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background-color: rgba(255, 255, 255, 0.98);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo img {
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-body);
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-pill);
}

/* Dropdown Menu */
.nav-item-has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -20px;
  width: 320px;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: 1050;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
}

.nav-item-has-dropdown:hover .dropdown-menu,
.nav-item-has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  transition: background-color var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--bg-subtle);
  color: var(--primary);
}

.dropdown-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--primary-50);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.dropdown-text h5 {
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
  font-weight: 600;
}

.dropdown-text p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-actions .btn-whatsapp,
.header-actions .btn-whatsapp-solid {
  display: none !important;
}

.hamburger-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  background-color: #FFFFFF;
  color: var(--text-main);
}

/* Mobile Offcanvas Drawer */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(300px, 85vw);
  height: 100vh;
  background: #FFFFFF;
  z-index: 1999;
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  overflow-y: auto;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--transition-smooth), visibility var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.close-drawer-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.mobile-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-links a {
  padding: 0.75rem 1rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
  border-radius: var(--radius-md);
}

.mobile-links a:hover, .mobile-links a.active {
  background-color: var(--primary-50);
  color: var(--primary);
}

.mobile-drawer-footer {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

/* ==========================================================================
   Floating WhatsApp Button
   ========================================================================== */
.floating-whatsapp {
  display: none !important;
}

.floating-whatsapp:hover {
  background: var(--whatsapp-hover);
  color: #FFFFFF;
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 10px 25px -3px rgba(37, 211, 102, 0.45);
}

.whatsapp-icon-pulse {
  width: 28px;
  height: 28px;
  fill: #FFFFFF;
  flex-shrink: 0;
}

.whatsapp-badge {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #FFFFFF;
  border-radius: 50%;
  animation: pulseSubtle 1.5s infinite;
}

/* ==========================================================================
   Visual Architecture Flow Diagram
   ========================================================================== */
.arch-diagram-wrapper {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  margin: 2.5rem 0;
}

.arch-flow-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  gap: 0.5rem;
}

.arch-node {
  flex: 1;
  background: var(--bg-subtle);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.arch-node:hover, .arch-node.active {
  background: #FFFFFF;
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.arch-node.active {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-brand);
}

.arch-node-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--primary-50);
  color: var(--primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.arch-node h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
  color: var(--text-main);
}

.arch-node p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.arch-arrow {
  color: var(--text-subtle);
  font-weight: bold;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.arch-explanation-box {
  margin-top: 2rem;
  background: var(--bg-subtle-alt);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  border-left: 4px solid var(--primary);
}

.arch-explanation-box h5 {
  font-size: 1rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.arch-explanation-box p {
  font-size: 0.875rem;
  color: var(--text-body);
}

/* ==========================================================================
   Admin Panel Showcase Component
   ========================================================================== */
.admin-showcase-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.admin-window-bar {
  background: #0F172A;
  color: #94A3B8;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 480px;
  background: #F8FAFC;
}

.admin-sidebar {
  background: #1E293B;
  color: #CBD5E1;
  padding: 1.25rem 0.75rem;
  border-right: 1px solid #334155;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.admin-sidebar-header {
  padding: 0.5rem 0.75rem 1rem 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748B;
  font-weight: 700;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  color: #94A3B8;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.admin-nav-item:hover, .admin-nav-item.active {
  background: rgba(99, 102, 241, 0.15);
  color: #FFFFFF;
}

.admin-nav-item.active {
  color: #818CF8;
  font-weight: 600;
}

.admin-content-area {
  padding: 1.75rem;
  background: #F8FAFC;
  overflow-x: auto;
}

.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.admin-stat-box {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.admin-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.admin-stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 0.25rem;
}

.admin-table-mockup {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  border-collapse: collapse;
  font-size: 0.85rem;
}

.admin-table-mockup th {
  background: #F1F5F9;
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-light);
}

.admin-table-mockup td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #0F172A;
  color: #94A3B8;
  padding: 5rem 0 2rem 0;
  border-top: 1px solid #1E293B;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr 1.6fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-logo {
  display: inline-block;
  background: #FFFFFF;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.footer-brand-logo img {
  height: 40px;
  width: auto;
  display: block;
}

.footer-brand p {
  color: #94A3B8;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-top: 0.5rem;
  max-width: 320px;
}

.footer-heading {
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: #94A3B8;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: #94A3B8;
}

.footer-contact-icon {
  color: var(--primary-light);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #1E293B;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #64748B;
}

.footer-bottom a {
  color: #94A3B8;
}

/* ==========================================================================
   Global Modal Overlay (WhatsApp QR Scanner & Popups)
   ========================================================================== */
.techorbit-modal-backdrop {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  padding: 1rem;
}

.techorbit-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.techorbit-modal-window {
  position: relative;
  max-width: 420px;
  width: 100%;
  transform: scale(0.92);
  transition: transform 0.25s ease;
}

.techorbit-modal-backdrop.open .techorbit-modal-window {
  transform: scale(1);
}

.modal-close-icon {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #F1F5F9;
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-icon:hover {
  background: #E2E8F0;
  color: var(--text-main);
}