/* ============================================================
   12.9  Shared navigation
   ============================================================ */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(13, 15, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: 60px;
}

/* Wordmark */
.site-nav__wordmark {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.02em;
  text-decoration: none;
  flex-shrink: 0;
  line-height: 1;
}

.site-nav__wordmark-auto {
  color: var(--color-text-primary);
}

.site-nav__wordmark-oracle {
  color: var(--color-accent-violet);
}

/* Links */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-inline-start: auto;
}

.site-nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.site-nav__link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-surface-raised);
}

.site-nav__link--active {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

/* CTA button */
.site-nav__cta {
  display: inline-block;
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #fff;
  background-color: var(--color-accent-violet);
  border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-5);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 0 12px rgba(124, 106, 255, 0.30);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.site-nav__cta:hover {
  background-color: #9580ff;
  box-shadow: 0 0 20px rgba(124, 106, 255, 0.50);
}

/* Hamburger */
.site-nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: var(--space-2);
  flex-shrink: 0;
}

.site-nav__hamburger span {
  display: block;
  width: 16px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: opacity 0.2s ease;
}

/* ============================================================
   Mobile (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  /* Nav becomes a positioning parent for the dropdown */
  .site-nav {
    position: sticky;
  }

  .site-nav__links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-inline-start: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding-block: var(--space-3);
    /* Ensure dropdown appears above page content */
    z-index: 99;
  }

  .site-nav__links--open {
    display: flex;
  }

  .site-nav__link {
    padding: var(--space-3) var(--space-6);
    border-radius: 0;
  }

  .site-nav__cta {
    display: none;
  }

  .site-nav__hamburger {
    display: flex;
    margin-inline-start: auto;
  }
}