/* Header styles scoped to .site-header and .navbar */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
}

.navbar {
  border-bottom: 1px solid var(--color-border-subtle);
}

.navbar__inner {
  height: var(--navbar-height);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

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

.navbar__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 1.1rem;
  background: radial-gradient(circle at 20% 20%, rgba(56, 189, 248, 0.7), transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(129, 140, 248, 0.7), transparent 55%),
    rgba(15, 23, 42, 0.98);
  border: 1px solid rgba(148, 163, 184, 0.6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.navbar__logo-chip {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  border: 2px solid rgba(248, 250, 252, 0.9);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.9);
}

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

.navbar__brand-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #f9fafb;
}

.navbar__brand-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Nav links */
.navbar__nav {
  display: flex;
  align-items: center;
}

.navbar__links {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__item {
  margin: 0;
}

.navbar__link {
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
  padding-block: 0.25rem;
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #38bdf8, #a855f7);
  transition: width var(--transition-normal);
}

.navbar__link:hover,
.navbar__link:focus-visible {
  color: var(--color-neutral-50);
}

.navbar__link:hover::after,
.navbar__link--active::after {
  width: 100%;
}

.navbar__link--cta {
  padding-inline: 1rem;
  padding-block: 0.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(59, 130, 246, 0.6);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #f9fafb;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--font-size-xs);
}

.navbar__link--cta::after {
  display: none;
}

.navbar__link--cta:hover,
.navbar__link--cta:focus-visible {
  background: linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
}

/* Mobile toggle button */
.navbar__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-soft);
  background: rgba(15, 23, 42, 0.95);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.navbar__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-neutral-200);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.navbar__toggle-bar + .navbar__toggle-bar {
  margin-top: 5px;
}

/* Toggle animation when menu is open */
.site-header--menu-open .navbar__toggle-bar:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.site-header--menu-open .navbar__toggle-bar:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.site-header--menu-open .navbar__toggle-bar:nth-child(2) {
   transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 960px) {
  .navbar__inner {
    gap: var(--space-3);
  }

  .navbar__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .navbar__nav {
    position: fixed;
    inset-inline: 0;
    top: var(--navbar-height);
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
  }

  .navbar__links {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
  }

  .navbar__item {
    width: 100%;
  }

  .navbar__link,
  .navbar__link--cta {
    width: 100%;
    display: inline-flex;
    justify-content: space-between;
  }

  .site-header--menu-open .navbar__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (max-width: 640px) {
  .navbar__brand-subtitle {
    display: none;
  }
}