/* ═══════════════════════════════════════════
   HEADER STYLES
   CygnusAlpha Production Theme
   ═══════════════════════════════════════════ */

/* ═══════════════════════════════════════════
   HEADER - TRANSPARENT BY DEFAULT
   ═══════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: all 0.4s ease;
}

/* Scrolled State - Sticky with Black Background */
.site-header.scrolled {
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.main-navigation {
  width: 100%;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  transition: height 0.3s ease;
}

.site-header.scrolled .nav-container {
  height: 70px;
}

/* ═══════════════════════════════════════════
   LOGO / BRANDING
   ═══════════════════════════════════════════ */
.site-branding {
  flex-shrink: 0;
  z-index: 10;
}

.nav-logo,
.custom-logo-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--font-logo);
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.02em;
  display: inline-block;
  transition: opacity 0.3s;
}

.nav-logo:hover,
.custom-logo-link:hover {
  opacity: 0.8;
}

.custom-logo,
.site-logo {
  max-height: 45px;
  width: auto;
  display: block;
  transition: max-height 0.3s ease;
}

.site-header.scrolled .custom-logo,
.site-header.scrolled .site-logo {
  max-height: 40px;
}

/* ═══════════════════════════════════════════
   MOBILE MENU TOGGLE
   ═══════════════════════════════════════════ */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  padding: 10px;
  cursor: pointer;
  color: #ffffff;
  transition: all 0.3s ease;
}

.menu-toggle:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
}

.menu-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: currentColor;
  left: 0;
  transition: transform 0.3s ease;
}

.menu-toggle-icon::before {
  top: -8px;
}

.menu-toggle-icon::after {
  bottom: -8px;
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon {
  background: transparent;
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.menu-toggle[aria-expanded='true'] .menu-toggle-icon::after {
  transform: rotate(-45deg);
  bottom: 0;
}

/* ═══════════════════════════════════════════
   NAVIGATION MENU
   ═══════════════════════════════════════════ */
.nav-menu-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
}

#primary-menu,
.nav-links {
  display: flex;
  gap: 48px;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

#primary-menu li,
.nav-links li {
  margin: 0;
  padding: 0;
  position: relative;
}

#primary-menu > li > a,
.nav-links > li > a {
  font-size: var(--font-nav-link);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color 0.3s ease;
  letter-spacing: 0;
  padding: 28px 0;
  display: inline-block;
  position: relative;
}

.site-header.scrolled #primary-menu > li > a,
.site-header.scrolled .nav-links > li > a {
  padding: 24px 0;
}

#primary-menu > li > a:hover,
.nav-links > li > a:hover,
#primary-menu > li > a:focus,
.nav-links > li > a:focus {
  color: #ffffff;
}

#primary-menu .current-menu-item > a,
.nav-links .current-menu-item > a,
#primary-menu .current_page_item > a,
.nav-links .current_page_item > a {
  color: #ffffff;
  font-weight: 600;
}

/* ═══════════════════════════════════════════
   SUBMENU / DROPDOWN
   ═══════════════════════════════════════════ */
#primary-menu .sub-menu,
.nav-links .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  min-width: 220px;
  padding: 8px 0;
  margin: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

#primary-menu li:hover > .sub-menu,
.nav-links li:hover > .sub-menu,
#primary-menu li:focus-within > .sub-menu,
.nav-links li:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#primary-menu .sub-menu li,
.nav-links .sub-menu li {
  width: 100%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#primary-menu .sub-menu li:last-child,
.nav-links .sub-menu li:last-child {
  border-bottom: none;
}

#primary-menu .sub-menu a,
.nav-links .sub-menu a {
  font-size: var(--font-nav-submenu);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  padding: 12px 20px;
  display: block;
  transition: all 0.2s ease;
}

#primary-menu .sub-menu a:hover,
.nav-links .sub-menu a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
  padding-left: 24px;
}

/* Submenu Indicator Arrow */
#primary-menu .menu-item-has-children > a::after,
.nav-links .menu-item-has-children > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  vertical-align: middle;
  transition: transform 0.3s ease;
}

#primary-menu .menu-item-has-children:hover > a::after,
.nav-links .menu-item-has-children:hover > a::after {
  transform: rotate(180deg);
}

/* ═══════════════════════════════════════════
   CTA BUTTON
   ═══════════════════════════════════════════ */
.nav-cta-wrapper {
  flex-shrink: 0;
}

.nav-cta {
  background: #ffffff;
  color: #000000;
  font-family: 'Outfit', sans-serif;
  font-size: var(--font-nav-cta);
  font-weight: 600;
  padding: 11px 26px;
  border-radius: 6px;
  text-decoration: none;
  letter-spacing: 0;
  transition: all 0.3s ease;
  display: inline-block;
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

/* ═══════════════════════════════════════════
   RESPONSIVE - TABLET
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .nav-container {
    padding: 0 32px;
  }

  #primary-menu,
  .nav-links {
    gap: 36px;
  }
}

/* ═══════════════════════════════════════════
   RESPONSIVE - MOBILE
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .nav-container {
    padding: 0 24px;
    height: 70px;
  }

  .site-header.scrolled .nav-container {
    height: 70px;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    order: 2;
  }

  .site-branding {
    order: 1;
  }

  .nav-menu-wrapper {
    order: 4;
  }

  .nav-cta-wrapper {
    order: 3;
  }

  #primary-menu,
  .nav-links {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-direction: column;
    gap: 0;
    padding: 24px;
    overflow-y: auto;
    z-index: 999;
    animation: slideDown 0.3s ease;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  #primary-menu.active,
  .nav-links.active {
    display: flex;
  }

  #primary-menu > li,
  .nav-links > li {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  #primary-menu > li:last-child,
  .nav-links > li:last-child {
    border-bottom: none;
  }

  #primary-menu > li > a,
  .nav-links > li > a {
    display: block;
    padding: 16px 0;
    font-size: var(--font-xl);
    text-align: left;
    color: rgba(255, 255, 255, 0.9);
  }

  #primary-menu .menu-item-has-children > a::after,
  .nav-links .menu-item-has-children > a::after {
    float: right;
    margin-left: 0;
  }

  /* Mobile Submenu */
  #primary-menu .sub-menu,
  .nav-links .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0 0 0 20px;
    margin-top: 8px;
    background: rgba(255, 255, 255, 0.05);
  }

  #primary-menu .sub-menu li,
  .nav-links .sub-menu li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  #primary-menu .sub-menu a,
  .nav-links .sub-menu a {
    padding: 12px 16px;
    font-size: var(--font-nav-submenu);
  }

  #primary-menu .sub-menu a:hover,
  .nav-links .sub-menu a:hover {
    padding-left: 20px;
  }
}

@media (max-width: 600px) {
  .nav-container {
    padding: 0 16px;
    height: 64px;
  }

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

  .nav-logo,
  .custom-logo-link {
    font-size: var(--font-3xl);
  }

  .custom-logo {
    max-height: 38px;
  }

  .site-header.scrolled .custom-logo {
    max-height: 35px;
  }

  .nav-cta {
    font-size: var(--font-sm);
    padding: 9px 18px;
  }

  .menu-toggle {
    padding: 8px;
  }

  #primary-menu,
  .nav-links {
    top: 64px;
    padding: 20px 16px;
  }

  #primary-menu > li > a,
  .nav-links > li > a {
    padding: 14px 0;
    font-size: var(--font-lg);
  }
}