/* ============================================================================
   Wave Car Studio — static build layer
   ----------------------------------------------------------------------------
   tailwind.css  = the compiled design system from src/styles.css
                   (tokens, @theme, typography utilities, tone-paper, motion).
   site.css      = only the handful of things React components used to do in
                   JavaScript, expressed as CSS state instead:

                     SiteHeader.tsx    -> .site-header.is-solid, [aria-current]
                     Reveal.tsx        -> .reveal / .reveal-pending / .is-shown
                     mobile menu       -> #mobile-nav[data-open="true"]

   Nothing here invents a new visual language: every value is read from the
   same custom properties the React app uses.
   ========================================================================== */

/* ---------------------------------------------------------------- header --- */

.site-header {
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.5s,
    border-color 0.5s,
    backdrop-filter 0.5s;
}

/* SiteHeader.tsx: `solid = !overlay || scrolled || open` */
.site-header.is-solid {
  border-bottom-color: var(--hairline);
  background-color: color-mix(in oklab, var(--background) 85%, transparent);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

/* NavLink used data-[status=active]; static pages use aria-current="page". */
.nav-link[aria-current="page"] {
  color: var(--color-primary);
}
.nav-link[aria-current="page"] > span {
  width: 100%;
}

/* Mobile menu drawer (was a Tailwind class swap in SiteHeader.tsx). */
#mobile-nav {
  height: 0;
  border-color: transparent;
}
#mobile-nav[data-open="true"] {
  height: calc(100dvh - 5rem);
  border-color: var(--hairline);
}

/* Hamburger turns into an X. */
#menu-toggle[aria-expanded="true"] .menu-bar:first-child {
  transform: rotate(45deg);
}
#menu-toggle[aria-expanded="true"] .menu-bar:last-child {
  transform: rotate(-45deg);
}

/* ------------------------------------------------------------ brand lockup -- */
/* "WAVE | CAR STUDIO" — the same lockup the Wave Audio site uses: the wave
   wordmark, a hairline divider, then the name in letterspaced display caps.
   Sizes are fluid in the footer so the longer name always fits its column. */

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 100%;
}

.brand-lockup__mark {
  display: block;
  flex: none;
  width: auto;
  height: 18px;
}

.brand-lockup__name {
  border-left: 1px solid color-mix(in oklab, var(--foreground) 30%, transparent);
  padding-left: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--foreground);
}

@media (min-width: 768px) {
  .brand-lockup__mark {
    height: 20px;
  }
  .brand-lockup__name {
    font-size: 0.75rem;
  }
}

.brand-lockup--footer .brand-lockup__mark {
  height: clamp(17px, 2.2vw, 30px);
}

.brand-lockup--footer .brand-lockup__name {
  font-size: clamp(0.6rem, 1.1vw, 0.9rem);
  letter-spacing: 0.28em;
}

/* ---------------------------------------------------------------- reveal --- */

/* Progressive enhancement: markup is visible by default, and site.js only
   hides blocks that start below the fold before observing them. */
.reveal {
  opacity: 1;
  transform: none;
}
.reveal.reveal-pending {
  opacity: 0;
  transform: translateY(24px);
}
.reveal.is-shown {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.reveal-pending {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ------------------------------------------------------- calibration panel -- */

/* Bars animate between the factory and calibrated profiles. */
[data-calibration] [data-factory] {
  transition: height 0.5s, background-color 0.5s;
}