/* =============================================
   Marketing Top Navigation — UI-0056 through UI-0060
   ============================================= */

/* --- Base Nav Wrapper --- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: 88px;
  background-color: var(--color-navy);
  border-bottom: 1px solid rgba(47, 128, 237, 0.15);
  transition: background-color var(--duration-normal) var(--ease-default),
              backdrop-filter var(--duration-normal) var(--ease-default);
}

/* --- Top accent gradient line --- */
.site-nav::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2F80ED, #8B5CF6, #2F80ED);
  z-index: 1;
}

/* --- Frosted Glass on Scroll (UI-0057) --- */
.site-nav.is-scrolled {
  background-color: rgba(10, 37, 64, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* --- Inner Layout --- */
.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* --- Logo --- */
.site-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-nav__logo img {
  height: 72px;
  width: auto;
}

.site-nav__logo-img {
  height: 72px;
  width: auto;
  display: block;
}

/* Stylized text logo */
.site-nav__logo-text {
  font-family: 'Space Grotesk', var(--font-sans);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 0%, #60B4FF 40%, #A78BFA 70%, #ffffff 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: nav-text-shimmer 6s ease infinite;
  text-shadow: none;
  filter: drop-shadow(0 0 20px rgba(96, 180, 255, 0.3));
  white-space: nowrap;
}

@keyframes nav-text-shimmer {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* --- Center Nav Links --- */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__link {
  position: relative;
  font-family: var(--font-sans);
  font-size: 1.0625rem; /* 17px */
  font-weight: var(--font-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  padding: var(--space-1) 0;
  transition: color var(--duration-fast) var(--ease-default);
  white-space: nowrap;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-electric-blue);
  transform: scaleX(0);
  transition: transform var(--duration-fast) var(--ease-default);
}

.site-nav__link:hover {
  color: var(--color-white);
}

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.site-nav__link.is-active {
  color: var(--color-white);
}

/* --- Right CTA Area --- */
.site-nav__cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Nav Login Button (blue outline, clearly visible) --- */
.btn-nav-login {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 7px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  color: #ffffff;
  background: transparent;
  border: 1.5px solid rgba(47, 128, 237, 0.80);
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: background 200ms ease, border-color 200ms ease, box-shadow 200ms ease, color 200ms ease;
  white-space: nowrap;
}

.btn-nav-login:hover {
  background: rgba(47, 128, 237, 0.15);
  border-color: #2F80ED;
  box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.20);
  color: #ffffff;
}

/* Desktop CTA "Get Started" button enhancement */
.site-nav__cta .btn-primary.btn-sm {
  padding: 10px 20px;
  font-weight: 600;
}

/* --- Hamburger Button --- */
.site-nav__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-white);
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast) var(--ease-default);
}

.site-nav__hamburger:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.site-nav__hamburger svg {
  width: var(--icon-md);
  height: var(--icon-md);
  stroke: currentColor;
}

/* =============================================
   Tablet Breakpoint 768–1023px (UI-0058)
   ============================================= */
@media (max-width: 1023px) {
  .site-nav__links {
    gap: var(--space-8);
  }

  /* Hide Blog and Log In at tablet */
  .site-nav__link--blog,
  .site-nav__link--login {
    display: none;
  }

  .site-nav__hamburger {
    display: flex;
  }
}

/* =============================================
   Mobile Breakpoint below 768px (UI-0059)
   ============================================= */
@media (max-width: 767px) {
  /* Hide all nav links */
  .site-nav__links {
    display: none;
  }

  /* Hide CTA buttons */
  .site-nav__cta {
    display: none;
  }

  /* Show hamburger */
  .site-nav__hamburger {
    display: flex;
  }

  /* Smaller logo on mobile */
  .site-nav__logo img {
    height: 64px;
  }
}

/* =============================================
   Mobile Menu Full-Screen Overlay (UI-0060)
   ============================================= */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background-color: var(--color-navy);
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-default);
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 var(--space-6);
  flex-shrink: 0;
}

.mobile-menu__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-white);
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast) var(--ease-default);
}

.mobile-menu__close:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.mobile-menu__close svg {
  width: var(--icon-md);
  height: var(--icon-md);
  stroke: currentColor;
}

.mobile-menu__nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: var(--space-8);
}

.mobile-menu__nav-link {
  font-family: var(--font-display);
  font-size: 1.75rem; /* 28px */
  font-weight: var(--font-bold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

.mobile-menu__nav-link:hover {
  color: var(--color-electric-blue);
}

.mobile-menu__footer {
  padding: var(--space-8);
  flex-shrink: 0;
}

.mobile-menu__cta {
  display: block;
  width: 100%;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Navigation — Enhanced Mobile & Tablet Polish
   -------------------------------------------------------------------------- */

/* iPad landscape and tablets */
@media (max-width: 1200px) and (min-width: 1024px) {
  .site-nav__links {
    gap: var(--space-8);
  }

  .site-nav__link {
    font-size: 0.9375rem;
  }
}

/* Mobile menu enhancements */
@media (max-width: 767px) {
  /* Nav height consistent */
  .site-nav {
    height: 72px;
  }

  /* Mobile menu nav links */
  .mobile-menu__nav-link {
    font-size: 1.5rem;
  }

  .mobile-menu__nav {
    gap: var(--space-5);
    padding: var(--space-6);
  }

  /* Mobile menu CTA button full width */
  .mobile-menu__cta {
    padding: 14px 24px;
    font-size: 1rem;
  }

  /* Mobile menu footer padding */
  .mobile-menu__footer {
    padding: var(--space-6);
  }
}

/* Small-ish phones */
@media (max-width: 480px) {
  .site-nav__logo-text {
    font-size: 1.125rem;
    letter-spacing: 0.05em;
  }

  .site-nav__logo img,
  .site-nav__logo-img {
    height: 56px;
  }
}

/* Small phones */
@media (max-width: 374px) {
  .site-nav {
    height: 64px;
  }

  .site-nav__logo img,
  .site-nav__logo-img {
    height: 60px;
  }

  .mobile-menu__nav-link {
    font-size: 1.25rem;
    letter-spacing: 0.03em;
  }
}

/* Safe area insets for notched phones (iPhone X+) */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .site-footer__bottom {
    padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  }

  .mobile-menu__footer {
    padding-bottom: calc(var(--space-8) + env(safe-area-inset-bottom));
  }

  .cookie-banner {
    bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  }
}