.navbar-shell {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 9999;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition:
    background 0.35s ease,
    backdrop-filter 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease;
}

.navbar-shell.scrolled {
  background: rgba(0, 3, 11, 0.88);
  backdrop-filter: blur(20px) saturate(145%);
  -webkit-backdrop-filter: blur(20px) saturate(145%);
  border-bottom-color: rgba(132, 167, 192, 0.18);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.35);
}

.navbar-container {
  width: min(100% - 2.5rem, var(--content-width));
  margin: 0 auto;
}

.navbar-main {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: var(--navbar-height);
}

.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  text-decoration: none;
  z-index: 20;
}

.navbar-brand-mark {
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  color: var(--white);
  background: var(--electric-blue);
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 0 22px rgba(11, 146, 214, 0.35);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -0.1em;
  line-height: 1;
  transform: skewX(-10deg);
}

.navbar-brand-title {
  display: flex;
  flex-direction: column;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 0.88;
  text-transform: uppercase;
  transition: color 0.25s ease;
}

.navbar-brand-title small {
  margin-top: 0.32rem;
  color: var(--ice-blue);
  font-family: var(--font-body);
  font-size: 0.48rem;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.navbar-brand:hover .navbar-brand-title {
  color: var(--electric-blue);
}

.navbar-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  justify-self: end;
  gap: 5px;
  width: 46px;
  height: 46px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(132, 167, 192, 0.35);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition:
    background 0.25s ease,
    border-color 0.25s ease,
    transform 0.25s ease;
  z-index: 20;
}

.navbar-toggle:hover {
  background: rgba(11, 146, 214, 0.12);
  border-color: var(--electric-blue);
  transform: translateY(-2px);
}

.navbar-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  transition:
    transform 0.25s ease,
    opacity 0.25s ease,
    background 0.25s ease;
}

.navbar-toggle.is-open {
  background: rgba(11, 146, 214, 0.15);
  border-color: var(--electric-blue);
}

.navbar-toggle.is-open span {
  background: var(--electric-blue);
}

.navbar-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.navbar-nav {
  display: none;
  position: absolute;
  top: calc(100% + 0.75rem);
  right: 1.25rem;
  left: 1.25rem;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem;
  background: rgba(0, 16, 39, 0.98);
  border: 1px solid rgba(132, 167, 192, 0.25);
  border-top: 3px solid var(--electric-blue);
  box-shadow: 0 24px 55px rgba(0, 0, 0, 0.55);
  opacity: 0;
  transform: translateY(-8px);
  visibility: hidden;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease,
    visibility 0.25s ease;
}

.navbar-nav.is-open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.navbar-nav a,
.nav-text-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.65rem 0.85rem;
  color: var(--light-ice);
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  line-height: 1;
  text-align: left;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    color 0.25s ease,
    border-color 0.25s ease,
    background 0.25s ease;
}

.navbar-nav a:not(.nav-cta):hover,
.navbar-nav a.active-link,
.nav-text-button:hover {
  color: var(--white);
  background: rgba(11, 146, 214, 0.1);
  border-left-color: var(--electric-blue);
}

.navbar-nav form {
  margin: 0;
}

.navbar-nav .nav-cta {
  justify-content: center;
  margin-top: 0.45rem;
  padding: 0.85rem 1rem;
  color: var(--white);
  background: var(--electric-blue);
  border: 1px solid var(--electric-blue);
  box-shadow: 0 8px 20px rgba(11, 146, 214, 0.23);
  font-size: 0.68rem;
}

.navbar-nav .nav-cta:hover {
  color: var(--white);
  background: var(--electric-blue-hover);
  border-color: var(--electric-blue-hover);
  box-shadow: 0 10px 25px rgba(11, 146, 214, 0.42);
  transform: translateY(-2px);
}

.site-messages {
  position: fixed;
  top: calc(var(--navbar-height-scrolled) + 1rem);
  right: 1rem;
  z-index: 9000;
  display: grid;
  gap: 0.75rem;
  width: min(420px, calc(100% - 2rem));
}

.site-message {
  padding: 1rem 1.1rem;
  color: var(--white);
  background: rgba(0, 16, 39, 0.96);
  border: 1px solid rgba(132, 167, 192, 0.34);
  border-left: 4px solid var(--electric-blue);
  box-shadow: var(--shadow-card);
  font-size: 0.9rem;
  line-height: 1.55;
}

.site-message.success {
  border-left-color: var(--success);
}

.site-message.warning {
  border-left-color: var(--warning);
}

.site-message.error {
  border-left-color: var(--danger);
}

.content-card {
  padding: clamp(1.25rem, 3vw, 2rem);
  color: var(--white);
  background: linear-gradient(
    145deg,
    rgba(6, 52, 101, 0.88),
    rgba(0, 16, 39, 0.96)
  );
  border: 1px solid var(--border-light);
  border-top: 4px solid var(--electric-blue);
  box-shadow: var(--shadow-card);
}

.content-card h2,
.content-card h3 {
  margin-top: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.content-card p,
.content-card li {
  color: var(--light-ice);
  line-height: 1.7;
}

@media (min-width: 1024px) {
  .navbar-container {
    width: min(100% - 5rem, var(--content-width));
  }

  .navbar-main {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .navbar-toggle {
    display: none;
  }

  .navbar-nav {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 0.1rem;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    opacity: 1;
    transform: none;
    visibility: visible;
  }

  .navbar-nav a,
  .nav-text-button {
    min-height: auto;
    padding: 0.6rem 0.72rem;
    border-left: 0;
    font-size: 0.62rem;
  }

  .navbar-nav a::after,
  .nav-text-button::after {
    position: absolute;
    right: 0.72rem;
    bottom: 0.23rem;
    left: 0.72rem;
    height: 2px;
    content: "";
    background: var(--electric-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
  }

  .navbar-nav a:not(.nav-cta):hover,
  .navbar-nav a.active-link,
  .nav-text-button:hover {
    background: transparent;
    border-left-color: transparent;
  }

  .navbar-nav a:not(.nav-cta):hover::after,
  .navbar-nav a.active-link::after,
  .nav-text-button:hover::after {
    transform: scaleX(1);
  }

  .navbar-nav .nav-cta {
    margin-top: 0;
    margin-left: 0.75rem;
    padding: 0.76rem 1rem;
  }

  .navbar-nav .nav-cta::after {
    display: none;
  }
}

@media (min-width: 1240px) {
  .navbar-nav {
    gap: 0.35rem;
  }

  .navbar-nav a,
  .nav-text-button {
    padding-right: 0.9rem;
    padding-left: 0.9rem;
    font-size: 0.66rem;
  }

  .navbar-nav .nav-cta {
    margin-left: 1rem;
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }
}