/* Header styles - build on base.css */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(to bottom, rgba(10, 14, 20, 0.98), rgba(10, 14, 20, 0.9));
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.3);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

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

.navbar-logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, rgba(255, 176, 32, 0.9), transparent 55%),
              radial-gradient(circle at 70% 100%, rgba(111, 91, 255, 0.9), transparent 55%);
  box-shadow: var(--shadow-glow-gold);
}

.navbar-logo-text {
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-heading);
}

.navbar-logo-tagline {
  display: none;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

@media (min-width: 960px) {
  .navbar-logo-tagline {
    display: inline-block;
  }
}

/* Desktop navigation */

.navbar-nav {
  display: flex;
  align-items: center;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-item {
  position: relative;
}

.nav-link {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  padding-block: 0.3rem;
  position: relative;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-violet));
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text-primary);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-link[aria-current="page"] {
  color: var(--color-text-primary);
}

.navbar-cta-wrap {
  margin-left: var(--space-4);
}

.nav-cta.btn {
  padding: 0.6rem 1.5rem;
  font-size: var(--font-size-xs);
}

/* Mobile navigation */

.navbar-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  z-index: 11;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.85);
  cursor: pointer;
  color: var(--color-text-primary);
}

.navbar-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (max-width: 960px) {
  .navbar-toggle {
    display: inline-flex;
  }

  .navbar-nav {
    position: fixed;
    inset: 0 0 auto auto;
    top: 0;
    right: 0;
    width: min(280px, 80vw);
    height: 100vh;
    background: radial-gradient(circle at top, rgba(111, 91, 255, 0.2) 0, rgba(10, 14, 20, 0.98) 55%);
    border-left: 1px solid rgba(148, 163, 184, 0.4);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    display: flex;
    justify-content: center;
  }

  .navbar-menu {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-8) var(--space-6);
    gap: var(--space-4);
  }

  .navbar-item {
    width: 100%;
  }

  .navbar-cta-wrap {
    margin-left: 0;
    margin-top: var(--space-4);
    width: 100%;
  }

  .nav-cta.btn {
    width: 100%;
    justify-content: center;
  }

  .site-header--menu-open .navbar-nav {
    transform: translateX(0);
  }

  .mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-slow);
  }

  .site-header--menu-open .mobile-nav-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .site-header--menu-open .navbar-toggle-bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .site-header--menu-open .navbar-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header--menu-open .navbar-toggle-bar:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .navbar-nav,
  .mobile-nav-overlay,
  .navbar-toggle-bar {
    transition: none !important;
  }
}