/**
 * Base CSS - Header, Footer & Layout
 * Corporate Design System
 * @version 3.0.0
 * @date 2025
 */

/* ===== Header Styles ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header, 1000);
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  padding: var(--space-4, 1rem) 0;
}

.site-header .container {
  max-width: var(--container-max, 80rem);
  margin: 0 auto;
  padding: 0 var(--container-padding, 1.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header .logo img {
  height: 36px;
  width: auto;
}

.site-header .nav {
  display: flex;
  align-items: center;
  gap: var(--space-2, 0.5rem);
}

.site-header .nav a {
  padding: var(--space-2, 0.5rem) var(--space-4, 1rem);
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
  text-decoration: none;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-medium, 500);
  border-radius: var(--radius-md, 0.5rem);
  transition: all var(--transition-fast, 0.15s ease);
}

.site-header .nav a:hover {
  color: var(--text-primary, #fff);
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
}

.site-header .nav a.active {
  color: var(--text-primary, #fff);
  background: var(--surface-active, rgba(255, 255, 255, 0.12));
}

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

.nav-dropdown > .nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1, 0.25rem);
  padding: var(--space-2, 0.5rem) var(--space-4, 1rem);
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
  text-decoration: none;
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-medium, 500);
  border-radius: var(--radius-md, 0.5rem);
  transition: all var(--transition-fast, 0.15s ease);
  cursor: pointer;
}

.nav-dropdown > .nav-link:hover,
.nav-dropdown:hover > .nav-link {
  color: var(--text-primary, #fff);
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
}

.nav-dropdown > .nav-link.active {
  color: var(--text-primary, #fff);
  background: var(--surface-active, rgba(255, 255, 255, 0.12));
}

.nav-dropdown-icon {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast, 0.15s ease);
}

.nav-dropdown:hover .nav-dropdown-icon {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  padding: var(--space-2, 0.5rem) 0;
  background: rgba(20, 20, 20, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius-lg, 0.75rem);
  box-shadow: var(--shadow-lg, 0 10px 30px rgba(0, 0, 0, 0.5));
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast, 0.15s ease);
  z-index: calc(var(--z-header, 1000) + 1);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-3, 0.75rem) var(--space-4, 1rem);
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
  text-decoration: none;
  font-size: var(--text-sm, 0.875rem);
  transition: all var(--transition-fast, 0.15s ease);
}

.nav-dropdown-menu a:hover {
  color: var(--text-primary, #fff);
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
}

.nav-dropdown-menu a.active {
  color: var(--text-primary, #fff);
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
}

/* ===== Main Content ===== */
.main-content {
  padding-top: 80px;
  min-height: 100vh;
  background: var(--neutral-900, #0a0a0a);
}

/* ===== Footer - Mega Footer ===== */
.site-footer {
  background: var(--neutral-900, #0a0a0a);
  border-top: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  padding: var(--space-16, 4rem) 0 var(--space-8, 2rem);
}

.footer-container {
  max-width: var(--container-max, 80rem);
  margin: 0 auto;
  padding: 0 var(--container-padding, 1.5rem);
}

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

/* Footer Brand */
.footer-brand {
  max-width: 300px;
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-4, 1rem);
}

.footer-tagline {
  color: var(--text-tertiary, rgba(255, 255, 255, 0.52));
  font-size: var(--text-sm, 0.875rem);
  line-height: var(--leading-relaxed, 1.8);
  margin-bottom: var(--space-6, 1.5rem);
}

.footer-social {
  display: flex;
  gap: var(--space-3, 0.75rem);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full, 9999px);
  background: var(--surface-elevated, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  color: var(--text-tertiary, rgba(255, 255, 255, 0.52));
  transition: all var(--transition-normal, 0.3s ease);
}

.footer-social a:hover {
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
  border-color: var(--border-default, rgba(255, 255, 255, 0.12));
  color: var(--text-primary, #fff);
  transform: translateY(-2px);
}

/* Footer Columns */
.footer-column {
  display: flex;
  flex-direction: column;
}

.footer-column-title {
  font-family: var(--font-display, sans-serif);
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--font-semibold, 600);
  color: var(--text-primary, #fff);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide, 0.05em);
  margin-bottom: var(--space-6, 1.5rem);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 0.75rem);
}

.footer-nav a {
  color: var(--text-tertiary, rgba(255, 255, 255, 0.52));
  text-decoration: none;
  font-size: var(--text-sm, 0.875rem);
  transition: color var(--transition-fast, 0.15s ease);
  padding: var(--space-1, 0.25rem) 0;
}

.footer-nav a:hover {
  color: var(--text-primary, #fff);
}

/* Footer Bottom */
.footer-bottom {
  padding-top: var(--space-8, 2rem);
  border-top: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-copyright {
  color: var(--text-disabled, rgba(255, 255, 255, 0.32));
  font-size: var(--text-sm, 0.875rem);
}

/* Footer Links (Legacy) */
.footer-links {
  margin-bottom: var(--space-4, 1rem);
}

.footer-links a {
  color: var(--text-tertiary, rgba(255, 255, 255, 0.52));
  text-decoration: none;
  font-size: var(--text-sm, 0.875rem);
  transition: color var(--transition-fast, 0.15s ease);
}

.footer-links a:hover {
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
}

.footer-divider {
  color: var(--text-disabled, rgba(255, 255, 255, 0.32));
  margin: 0 var(--space-3, 0.75rem);
}

/* ===== Mobile Menu Button ===== */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius-md, 0.5rem);
  cursor: pointer;
  padding: 0;
  z-index: calc(var(--z-header, 1000) + 1);
}

.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary, #fff);
  transition: all var(--transition-normal, 0.3s ease);
  position: relative;
}

.mobile-menu-btn span::before,
.mobile-menu-btn span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--text-primary, #fff);
  transition: all var(--transition-normal, 0.3s ease);
}

.mobile-menu-btn span::before {
  top: -6px;
}

.mobile-menu-btn span::after {
  top: 6px;
}

/* Hamburger Animation - Open State */
.mobile-menu-btn.active span {
  background: transparent;
}

.mobile-menu-btn.active span::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-btn.active span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ===== Mobile Menu Overlay ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.98);
  z-index: calc(var(--z-header, 1000) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal, 0.3s ease), visibility var(--transition-normal, 0.3s ease);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: var(--space-8, 2rem);
}

.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6, 1.5rem);
}

.mobile-menu-nav a {
  font-family: var(--font-display, sans-serif);
  font-size: var(--text-2xl, 1.5rem);
  font-weight: var(--font-medium, 500);
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
  text-decoration: none;
  padding: var(--space-3, 0.75rem) var(--space-8, 2rem);
  border-radius: var(--radius-md, 0.5rem);
  transition: all var(--transition-normal, 0.3s ease);
}

.mobile-menu-nav a:hover,
.mobile-menu-nav a.active {
  color: var(--text-primary, #fff);
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
}

.mobile-menu-social {
  display: flex;
  gap: var(--space-6, 1.5rem);
  margin-top: var(--space-12, 3rem);
}

.mobile-menu-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full, 9999px);
  background: var(--surface-elevated, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  color: var(--text-secondary, rgba(255, 255, 255, 0.72));
  transition: all var(--transition-normal, 0.3s ease);
}

.mobile-menu-social a:hover {
  background: var(--surface-hover, rgba(255, 255, 255, 0.08));
  border-color: var(--border-default, rgba(255, 255, 255, 0.12));
  color: var(--text-primary, #fff);
}

/* ===== Responsive Styles ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8, 2rem);
  }

  .footer-brand {
    max-width: 100%;
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .site-header .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8, 2rem);
    text-align: center;
  }

  .footer-brand {
    max-width: 100%;
    align-items: center;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-column {
    align-items: center;
  }
}

/* Prevent body scroll when menu is open */
body.menu-open {
  overflow: hidden;
}

/* ===== Optimized Hero Animations ===== */
/* Redistributed line positions for 4 lines */
.futuristic-background .futuristic-line:first-child { top: 15% !important; animation-delay: 0s !important; }
.futuristic-background .futuristic-line:nth-child(2) { top: 38% !important; animation-delay: 2s !important; }
.futuristic-background .futuristic-line:nth-child(3) { top: 62% !important; animation-delay: 4s !important; }
.futuristic-background .futuristic-line:nth-child(4) { top: 85% !important; animation-delay: 6s !important; }

/* Redistributed meteor positions for 4 meteors */
.futuristic-background .meteor:nth-child(5) { top: 10% !important; left: 70% !important; animation-delay: 0s !important; animation-duration: 2.5s !important; }
.futuristic-background .meteor:nth-child(6) { top: 30% !important; left: 85% !important; animation-delay: 1s !important; animation-duration: 3s !important; }
.futuristic-background .meteor:nth-child(7) { top: 50% !important; left: 55% !important; animation-delay: 2s !important; animation-duration: 2.8s !important; }
.futuristic-background .meteor:nth-child(8) { top: 20% !important; left: 30% !important; animation-delay: 3s !important; animation-duration: 3.2s !important; }

/* Refined scroll indicator animation */
@keyframes scrollDownRefined {
  0%, 100% {
    transform: translateY(0);
    opacity: 0.7;
  }
  50% {
    transform: translateY(8px);
    opacity: 1;
  }
}

.scroll-down-arrow {
  animation: scrollDownRefined 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* ===== Accessibility: Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  .futuristic-line,
  .meteor,
  .futuristic-background,
  .futuristic-background::before,
  .scroll-down-arrow,
  .service-card,
  .fade-up,
  .fade-in,
  .stagger-children > *,
  [class*="animate-"] {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }

  .fade-up,
  .fade-in,
  .stagger-children > * {
    opacity: 1 !important;
    transform: none !important;
  }
}