/* Header styles for CzarnyNeedle */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: radial-gradient(circle at top left, rgba(179, 41, 46, 0.18), transparent 55%),
              linear-gradient(to bottom, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.88));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
  gap: var(--space-4);
}

/* Brand */
.site-header__brand {
  display: flex;
  align-items: center;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.site-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-metallic-soft);
  background: radial-gradient(circle at 30% 20%, rgba(179, 41, 46, 0.65), transparent 60%),
              radial-gradient(circle at 75% 80%, rgba(176, 182, 191, 0.6), transparent 60%),
              #050608;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 10px 25px rgba(0, 0, 0, 0.7);
}

.site-header__title {
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  font-size: 0.95rem;
  text-transform: uppercase;
}

.site-header__title-accent {
  color: var(--color-primary);
}

.site-header__tagline {
  display: block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gray-500);
  margin-top: 2px;
}

/* Navigation */
.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gray-200);
  padding: 0.25rem 0;
}

.site-header__nav-link::after {
  bottom: -4px;
}

.site-header__nav-link:hover {
  color: var(--color-text);
}

.site-header__nav-item--cta .site-header__nav-link--cta {
  padding-inline: 1.4rem;
  padding-block: 0.5rem;
  font-size: 0.7rem;
}

/* Toggle (hamburger) */
.site-header__toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(5, 6, 8, 0.9);
  color: var(--gray-200);
}

.site-header__toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  width: 18px;
  height: 18px;
  gap: 4px;
}

.site-header__toggle-line {
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-metallic));
  transition: transform var(--transition-normal), opacity var(--transition-normal), width var(--transition-normal);
}

.site-header__toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

/* Toggle active state */
.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:first-child {
  transform: translateY(3px) rotate(45deg);
}

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

/* When JS marks body as having mobile nav open */
body.is-mobile-nav-open {
  overflow: hidden;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header__inner {
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset: 0 0 auto;
    top: 64px;
    background: radial-gradient(circle at top left, rgba(179, 41, 46, 0.25), transparent 55%),
                linear-gradient(to bottom, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.98));
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

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

  .site-header__nav-link {
    font-size: var(--font-size-sm);
  }

  .site-header__nav-item--cta {
    width: 100%;
  }

  .site-header__nav-item--cta .site-header__nav-link--cta {
    width: 100%;
    justify-content: center;
  }

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

@media (max-width: 520px) {
  .site-header__tagline {
    display: none;
  }
}