:root {
  --audit-nav-dark: #1a1a1a;
  --audit-nav-light: #f8f9fa;
  --audit-nav-gold: #ffd700;
  --audit-nav-bronze: #cd7f32;
  --audit-nav-ease: cubic-bezier(.22, 1, .36, 1);
}

.audit-site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--audit-nav-light);
  background: rgba(26, 26, 26, .82);
  border-bottom: 1px solid rgba(255, 215, 0, .08);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  transition: background .3s var(--audit-nav-ease), border-color .3s var(--audit-nav-ease);
}

.audit-nav-inner {
  max-width: 1280px;
  min-height: 72px;
  padding: 12px 24px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.audit-nav-brand { display: inline-flex; flex: 0 0 auto; align-items: center; border-radius: 8px; }
.audit-brand-lockup { display: block; position: relative; width: 152px; aspect-ratio: 2172 / 724; line-height: 0; transition: transform .4s var(--audit-nav-ease); }
.audit-nav-brand:hover .audit-brand-lockup { transform: rotate(-2deg) scale(1.02); }
.audit-brand-lockup img { display: block; width: 100%; height: 100%; object-fit: contain; transition: opacity .28s var(--audit-nav-ease); }
.audit-brand-charcoal { position: absolute; inset: 0; opacity: 0; }
/* Không dùng gạch chân link (Tailwind preflight không load trên các trang này) */
.audit-site-nav a,
.audit-drawer a {
  text-decoration: none;
}
.audit-nav-links { display: flex; align-items: center; gap: clamp(12px, 1.8vw, 28px); white-space: nowrap; }
.audit-nav-links a { font-size: 14px; font-weight: 500; color: rgba(248, 249, 250, .82); text-decoration: none; transition: color .22s var(--audit-nav-ease); }
.audit-nav-links a:hover, .audit-nav-links a[aria-current] { color: var(--audit-nav-gold); }
.audit-nav-actions { display: flex; align-items: center; gap: 12px; }
.audit-nav-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-width: 64px; min-height: 44px; padding: 0 12px; border: 1px solid rgba(248, 249, 250, .26); border-radius: 12px; background: linear-gradient(145deg, rgba(248, 249, 250, .14), rgba(248, 249, 250, .03)); color: rgba(248, 249, 250, .94); font-size: 11px; font-weight: 700; letter-spacing: .12em; transition: transform .22s var(--audit-nav-ease), color .22s var(--audit-nav-ease), border-color .22s var(--audit-nav-ease); }
.audit-nav-toggle svg { width: 14px; height: 14px; }
.audit-nav-toggle:hover { color: var(--audit-nav-gold); border-color: rgba(255, 215, 0, .62); transform: translateY(-1px); }
.audit-nav-toggle:active { transform: translateY(0); }
.audit-nav-contact { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 0 20px; border-radius: 12px; background: var(--audit-nav-gold); color: var(--audit-nav-dark); font-size: 14px; font-weight: 800; white-space: nowrap; transition: transform .22s var(--audit-nav-ease), background .22s var(--audit-nav-ease); }
.audit-nav-contact:hover { background: #edc600; transform: translateY(-2px); }
.audit-nav-contact:active { transform: translateY(0); }
.audit-nav-menu { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; padding: 8px; border: 0; border-radius: 8px; background: transparent; color: inherit; }
.audit-nav-menu svg { width: 24px; height: 24px; }
.audit-nav-drawer { display: none; flex-direction: column; gap: 2px; padding: 12px 24px 24px; border-top: 1px solid rgba(248, 249, 250, .1); background: var(--audit-nav-dark); }
.audit-nav-drawer > a:not(.audit-nav-contact) { min-height: 44px; padding: 11px 8px; color: rgba(248, 249, 250, .9); font-size: 14px; }
.audit-nav-drawer a:hover, .audit-nav-drawer a[aria-current] { color: var(--audit-nav-gold); }
.audit-nav-drawer-actions { display: flex; gap: 8px; padding: 8px 0; }
.audit-nav-drawer .audit-nav-contact { margin-top: 8px; }
.audit-site-nav a:focus-visible, .audit-site-nav button:focus-visible { outline: 3px solid var(--audit-nav-gold); outline-offset: 3px; }

body[data-ui-theme='light'] .audit-site-nav { color: var(--audit-nav-dark); background: rgba(248, 249, 250, .94); border-bottom-color: rgba(26, 26, 26, .09); }
body[data-ui-theme='light'] .audit-brand-gold { opacity: 0; }
body[data-ui-theme='light'] .audit-brand-charcoal { opacity: 1; }
body[data-ui-theme='light'] .audit-nav-links a { color: var(--audit-nav-dark); }
body[data-ui-theme='light'] .audit-nav-links a:hover, body[data-ui-theme='light'] .audit-nav-links a[aria-current] { color: var(--audit-nav-bronze); }
body[data-ui-theme='light'] .audit-nav-toggle { border-color: rgba(26, 26, 26, .14); background: rgba(248, 249, 250, .94); color: var(--audit-nav-dark); }
body[data-ui-theme='light'] .audit-nav-toggle:hover { border-color: var(--audit-nav-bronze); color: var(--audit-nav-bronze); }
body[data-ui-theme='light'] .audit-nav-drawer { background: var(--audit-nav-light); border-top-color: rgba(26, 26, 26, .14); }
body[data-ui-theme='light'] .audit-nav-drawer > a:not(.audit-nav-contact) { color: var(--audit-nav-dark); }
body[data-ui-theme='light'] .audit-nav-drawer a:hover, body[data-ui-theme='light'] .audit-nav-drawer a[aria-current] { color: var(--audit-nav-bronze); }

@media (max-width: 1150px) {
  .audit-nav-links, .audit-nav-actions > .audit-nav-toggle, .audit-nav-actions > .audit-nav-contact { display: none; }
  .audit-nav-menu { display: inline-flex; }
  .audit-nav-drawer:not([hidden]) { display: flex; }
}
@media (max-width: 640px) {
  .audit-nav-inner { min-height: 66px; padding: 10px 18px; }
  .audit-brand-lockup { width: 124px; }
  .audit-nav-drawer { padding: 12px 18px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .audit-site-nav, .audit-brand-lockup, .audit-brand-lockup img, .audit-nav-links a, .audit-nav-toggle, .audit-nav-contact { transition: none; }
  .audit-nav-brand:hover .audit-brand-lockup, .audit-nav-contact:hover { transform: none; }
}