/* Header & primary navigation */

.site-header {
  position: relative;
  z-index: 40;
}

.site-header .navbar {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.25), transparent 55%),
              rgba(15, 23, 42, 0.94);
  box-shadow: var(--shadow-md);
}

.site-branding {
  display: flex;
  align-items: center;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: #f9fafb;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #9ca3af 24%, #111827 85%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.35);
}

.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-strong));
}

.brand-bolt {
  width: 10px;
  height: 16px;
  clip-path: polygon(45% 0, 0 55%, 35% 55%, 5% 100%, 65% 45%, 30% 45%);
  background: #fef9c3;
  box-shadow: 0 0 10px rgba(250, 250, 210, 0.9);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #f9fafb;
}

.brand-tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: rgba(229, 231, 235, 0.8);
}

/* Navigation layout */

.primary-nav {
  display: flex;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(249, 250, 251, 0.86);
  padding: 0.4rem 0;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #ffffff;
}

.nav-item-cta .nav-link-cta {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(191, 219, 254, 0.4);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.3), rgba(15, 23, 42, 0.1));
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.35);
  color: #f9fafb;
}

.nav-item-cta .nav-link-cta:hover,
.nav-item-cta .nav-link-cta:focus-visible {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(37, 99, 235, 0.8));
  border-color: rgba(219, 234, 254, 0.9);
}

/* Mobile toggle */

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: #e5e7eb;
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background-color: rgba(15, 23, 42, 0.6);
  cursor: pointer;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: rgba(209, 213, 219, 0.9);
  background-color: rgba(15, 23, 42, 0.9);
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.nav-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: #e5e7eb;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.nav-toggle-text {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* Mobile nav state */

@media (max-width: 767.98px) {
  .navbar-inner {
    gap: var(--space-3);
  }

  .brand-tagline {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    transform: translateY(8px);
    padding-inline: var(--space-4);
    display: none;
  }

  .primary-nav.is-open {
    display: block;
  }

  .primary-nav .nav-links {
    flex-direction: column;
    align-items: stretch;
    background: rgba(15, 23, 42, 0.98);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(148, 163, 184, 0.5);
    padding: var(--space-3);
    box-shadow: var(--shadow-lg);
  }

  .primary-nav .nav-link {
    display: block;
    width: 100%;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-md);
  }

  .primary-nav .nav-link:focus-visible {
    outline-offset: -2px;
  }

  .nav-item-cta .nav-link-cta {
    width: 100%;
    text-align: center;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }
}

/* Desktop adjusts */

@media (min-width: 768px) {
  .navbar-inner {
    gap: var(--space-8);
  }

  .primary-nav {
    flex: 1;
    justify-content: flex-end;
  }
}