/* Header layout building on base.css */
.site-header {
  z-index: 40;
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding-block: 0.25rem;
}

.header-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.header-logo-ball {
  font-size: 1.1rem;
}

.header-logo-text {
  display: flex;
  flex-direction: column;
}

.header-logo-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: -0.03em;
}

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

/* Navigation */
.primary-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-item {
  position: relative;
}

.nav-cta-wrapper {
  margin-left: var(--space-2);
}

.nav-cta {
  font-size: var(--font-size-xs);
  white-space: nowrap;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-text);
  border-radius: var(--radius-pill);
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  background-color: rgba(15, 23, 42, 0.85);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.nav-toggle:hover {
  background-color: rgba(15, 23, 42, 0.95);
  border-color: rgba(250, 204, 21, 0.8);
  transform: translateY(-1px);
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}

.nav-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Mobile nav state */
@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.98));
    border-bottom: 1px solid rgba(148, 163, 184, 0.4);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .primary-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: scaleY(1);
  }

  .primary-nav .nav-links {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--container-padding-x) var(--space-4);
    gap: var(--space-3);
  }

  .nav-cta-wrapper {
    width: 100%;
    margin-left: 0;
  }

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

/* Desktop-only adjustments */
@media (min-width: 769px) {
  .primary-nav {
    position: static;
  }
}

/* Open / close icon animation */
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}