/* ==========================================================================
   COMPONENT: NavBar
   Sticky header: logo left · links center · CTA right
   ========================================================================== */

.navbar {
  position: fixed;
  top: var(--banner-height);
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease, top 0.2s ease;
}

/* When banner is dismissed, nav slides to top-0 (JS removes has-banner from body and sets top:0) */
.navbar.banner-gone {
  top: 0;
}

/* Scrolled state — JS adds .is-scrolled */
.navbar.is-scrolled {
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-content-width);
  margin-inline: auto;
  padding-inline: var(--spacing-4);
  gap: var(--spacing-4);
}

/* -------------------------------------------------------------------
   Logo
------------------------------------------------------------------- */

.navbar__logo {
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.2s ease;
}

.navbar__logo-img {
  display: block;
  height: 96px;       /* rendered height in navbar — doubled from 48px */
  width: auto;        /* preserve aspect ratio */
  object-fit: contain;
}

.navbar__logo:hover {
  opacity: 0.8;
}

.navbar__logo:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 2px;
}

/* -------------------------------------------------------------------
   Nav links — desktop
------------------------------------------------------------------- */

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-5);
  list-style: none;
}

.navbar__links a {
  font-family: var(--font-primary);
  font-size: 0.9375rem;
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  text-decoration: none;
  position: relative;
  padding-block: 4px;
  transition: color 0.2s ease;
}

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.navbar__links a:hover,
.navbar__links a[aria-current='page'] {
  color: var(--color-accent);
}

.navbar__links a:hover::after,
.navbar__links a[aria-current='page']::after {
  transform: scaleX(1);
}

.navbar__links a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 2px;
}

/* -------------------------------------------------------------------
   CTA Button (right side)
------------------------------------------------------------------- */

.navbar__cta {
  flex-shrink: 0;
}

/* -------------------------------------------------------------------
   Hamburger — mobile only
------------------------------------------------------------------- */

.navbar__hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-1);
  color: var(--color-text-primary);
  flex-shrink: 0;
}

.navbar__hamburger:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.navbar__hamburger svg {
  width: 24px;
  height: 24px;
  display: block;
}

/* Hamburger icon lines */
.hamburger-bar {
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center center;
  transform-box: fill-box;
}

/* Open state — animated to X */
.navbar__hamburger[aria-expanded='true'] .hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.navbar__hamburger[aria-expanded='true'] .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.navbar__hamburger[aria-expanded='true'] .hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* -------------------------------------------------------------------
   Mobile menu drawer
------------------------------------------------------------------- */

.navbar__mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-total-height);
  left: 0;
  right: 0;
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-4);
  flex-direction: column;
  gap: var(--spacing-4);
  z-index: calc(var(--z-nav) - 1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.navbar__mobile-menu.is-open {
  display: flex;
}

.navbar__mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.navbar__mobile-links a {
  display: block;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  text-decoration: none;
  padding-block: var(--spacing-2);
  border-bottom: 1px solid var(--color-border);
  transition: color 0.2s ease;
}

.navbar__mobile-links a:hover,
.navbar__mobile-links a[aria-current='page'] {
  color: var(--color-accent);
}

.navbar__mobile-links a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.navbar__mobile-cta {
  margin-top: var(--spacing-2);
  width: 100%;
  text-align: center;
}

/* -------------------------------------------------------------------
   Responsive — ≤768px
------------------------------------------------------------------- */

@media (max-width: 768px) {
  .navbar__links {
    display: none;
  }

  .navbar__cta {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .navbar__mobile-menu {
    top: calc(var(--banner-height) + var(--nav-height));
  }

  .navbar.banner-gone + .navbar__mobile-menu,
  .navbar.banner-gone ~ .navbar__mobile-menu {
    top: var(--nav-height);
  }
}