/* Header styles for Intelion */

.fd-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  backdrop-filter: blur(16px);
  background: linear-gradient(90deg, rgba(5, 8, 22, 0.92), rgba(8, 21, 51, 0.94));
  border-bottom: 1px solid rgba(120, 144, 180, 0.28);
}

.fd-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.fd-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.fd-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: radial-gradient(circle at 20% 0%, #3b82f6, #0f172a 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: #e5f0ff;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.8);
}

.fd-header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.fd-header__brand-name {
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: #f9fbff;
}

.fd-header__brand-tagline {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.75rem;
  color: #9fb1d9;
}

/* Navigation */

.fd-header__nav {
  display: flex;
  align-items: center;
}

.fd-header__nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.fd-header__nav-item {
  position: relative;
}

.fd-header__nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #d9e4ff;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.fd-header__nav-link:hover,
.fd-header__nav-link:focus-visible {
  background: rgba(37, 99, 235, 0.15);
  color: #f9fbff;
}

.fd-header__nav-link:focus-visible {
  outline: 2px solid #60a5fa;
  outline-offset: 2px;
}

.fd-header__nav-item--highlight .fd-header__nav-link--cta {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #f9fbff;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.55);
}

.fd-header__nav-item--highlight .fd-header__nav-link--cta:hover,
.fd-header__nav-item--highlight .fd-header__nav-link--cta:focus-visible {
  background: linear-gradient(135deg, #1d4ed8, #1d4ed8);
  transform: translateY(-1px);
}

/* Mobile toggle */

.fd-header__toggle {
  position: relative;
  display: none!important;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.9);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.fd-header__toggle:focus-visible {
  outline: 2px solid #60a5fa;
  outline-offset: 2px;
}

.fd-header__toggle-bar {
  position: absolute;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: #e5f0ff;
  transition: transform 160ms ease, opacity 160ms ease, top 160ms ease, bottom 160ms ease;
}

.fd-header__toggle-bar:nth-child(1) {
  top: 13px;
}

.fd-header__toggle-bar:nth-child(2) {
  top: 19px;
}

.fd-header__toggle-bar:nth-child(3) {
  bottom: 13px;
}

.fd-header__toggle[aria-expanded="true"] .fd-header__toggle-bar:nth-child(1) {
  top: 19px;
  transform: rotate(45deg);
}

.fd-header__toggle[aria-expanded="true"] .fd-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.fd-header__toggle[aria-expanded="true"] .fd-header__toggle-bar:nth-child(3) {
  bottom: auto;
  top: 19px;
  transform: rotate(-45deg);
}

/* Overlay for mobile menu */
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.fd-header__overlay {
  display: none;
}

/* Responsive behavior */

@media (max-width: 768px) {
  .fd-header__inner {
    padding-inline: 1rem;
  }

  .fd-header__toggle {
    display: inline-flex!important;
  }

  .fd-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 60px;
    background: radial-gradient(circle at top, rgba(37, 99, 235, 1), rgba(5, 8, 22, 0.98));
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 180ms ease-out, opacity 180ms ease-out;
  }

  .fd-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.25rem 1.5rem;
    gap: 0.25rem;
  }

  .fd-header__nav-link {
    width: 100%;
    padding-block: 0.7rem;
    padding-inline: 0.9rem;
    border-radius: 0.75rem;
    font-size: 0.95rem;
  }

  .fd-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .fd-header__overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(3px);
    display: none;
    z-index: -1;
  }

  .fd-header__overlay--visible {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fd-header,
  .fd-header__nav,
  .fd-header__toggle-bar {
    scroll-behavior: auto;
    transition: none !important;
  }
}