/* Layout and Shell Styles */

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  transition: var(--transition-smooth);
}

.header-container.container {
  max-width: 1600px;
  width: 100%;
}

@media (max-width: 1400px) {
  .header-container.container {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }
  .nav-list {
    gap: 12px;
  }
  .nav-link {
    font-size: 13px;
  }
  .nav-cta {
    padding: 0.5rem 1rem;
    font-size: 13px;
  }
}

.site-header.scrolled .header-container {
  height: 64px;
}

.logo {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
  text-decoration: none;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-text {
  background: linear-gradient(135deg, var(--accent-primary) 30%, var(--accent-tertiary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.logo-icon {
  width: 24px;
  height: 24px;
  border: 2px solid transparent;
  border-radius: 6px;
  background: linear-gradient(var(--bg-primary), var(--bg-primary)) padding-box,
              linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)) border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 14px;
  font-weight: bold;
  line-height: 1;
  position: relative;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-list {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: 12px;
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  position: relative;
  padding: var(--space-sm) 0;
  display: block;
  white-space: nowrap;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Scroll Progress Bar */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
  z-index: 1100;
  transform-origin: 0 50%;
  transform: scaleX(0);
}

@media (prefers-reduced-motion: no-preference) {
  @supports ((animation-timeline: scroll())) {
    @keyframes grow-progress {
      from { transform: scaleX(0); }
      to { transform: scaleX(1); }
    }
    .scroll-progress-bar {
      animation: grow-progress auto linear;
      animation-timeline: scroll();
    }
  }
}

/* Mega Menu Panels */
.mega-menu-panel {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(15px);
  width: 90vw;
  max-width: 1000px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.25s;
  z-index: 999;
}

/* Invisible hover bridge to prevent menu from closing when moving mouse */
.mega-menu-panel::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  width: 100%;
  height: 40px;
  background: transparent;
}

.nav-item.has-mega-menu:hover .mega-menu-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Standard Dropdowns */
.standard-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(15px);
  width: 220px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1), transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.25s;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: var(--space-xxs);
}

/* Invisible hover bridge */
.standard-dropdown::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  width: 100%;
  height: 40px;
  background: transparent;
}

.nav-item.has-standard-dropdown:hover .standard-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.dropdown-link {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
}

.dropdown-link:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--accent-primary);
  padding-left: calc(var(--space-sm) + 4px);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.2rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--accent-primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-elastic);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

/* Footer styling */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

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

.footer-brand p {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-top: var(--space-sm);
  max-width: 300px;
}

.footer-col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--accent-secondary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom p {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.footer-socials {
  display: flex;
  gap: var(--space-sm);
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.social-icon:hover {
  border-color: var(--accent-primary);
  color: var(--bg-primary);
  background: var(--accent-primary);
  transform: translateY(-2px);
}

/* Page shell padding for fixed header */
main {
  padding-top: 80px; /* matches header height */
  min-height: calc(100vh - 80px);
}

/* Responsiveness */
@media (max-width: 1280px) {
  .nav-toggle {
    display: flex;
  }
  
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 340px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-xl);
    padding: var(--space-2xl) var(--space-md);
    transition: right var(--transition-smooth);
    z-index: 1000;
    overflow-y: auto;
  }
  
  .main-nav.open {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: var(--space-sm);
  }
  
  .nav-item {
    width: 100%;
    text-align: left;
  }
  
  .nav-link {
    font-size: var(--fs-md);
    width: 100%;
    padding: var(--space-xs) 0;
  }
  
  .nav-link.has-submenu::after {
    content: ' ▾';
    font-size: 0.8em;
    vertical-align: middle;
    transition: transform var(--transition-smooth);
    display: inline-block;
  }
  
  .nav-link.has-submenu.submenu-active::after {
    transform: rotate(180deg);
  }
  
  /* Mobile drop-ins */
  .mega-menu-panel,
  .standard-dropdown {
    position: static !important;
    transform: none !important;
    width: 100% !important;
    max-width: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    display: none; /* controlled by JS toggle */
    background: rgba(0, 0, 0, 0.02) !important;
    border: none !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: none !important;
    padding: var(--space-sm) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    transition: none !important;
  }
  
  .mega-menu-panel.mobile-open,
  .standard-dropdown.mobile-open {
    display: block !important;
  }
  
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}