/* =========================================================================
   What-A-Toy! — Navbar
   Sticky red gradient bar · logo left · centered links · red "Visit Us" CTA
   · mobile hamburger · active-link highlight · gold stripe accent.
   Uses design tokens from variables.css — no hardcoded brand hex.
   ========================================================================= */

/* ---- Fixed shell --------------------------------------------------------- */
.navbar {
  /* Fixed (overlay), NOT sticky: a sticky bar stays in normal flow and reserves
     its own height at the top of the document, which pushed the 100vh hero down
     by --nav-h and broke its vertical centering. Each section already reserves
     the bar via its own top padding / scroll-padding-top, so the bar overlays. */
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  min-height: var(--nav-h);
  /* Frosted warm-cream bar — highly translucent so the colorful sections
     show through; a strong blur keeps text legible. Rounded bottom corners
     give it a floating-tab feel. */
  background: rgba(247, 239, 223, 0.42);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  color: var(--navy);
  box-shadow: var(--shadow-nav);
  /* Subtle golden-yellow hairline under the bar, echoing the logo stripes */
  border-bottom: 2px solid rgba(242, 184, 43, 0.5);
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  transition: box-shadow var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}

/* A touch more opaque + deeper shadow once the page has scrolled. */
.navbar.is-scrolled {
  background: rgba(247, 239, 223, 0.62);
  box-shadow: 0 8px 24px rgba(42, 59, 110, 0.18);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: var(--nav-h);
}

/* ---- Brand / logo -------------------------------------------------------- */
.navbar__brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: transform var(--dur-fast) var(--ease-out);
}

.navbar__brand:hover {
  transform: translateY(-1px);
}

.navbar__logo {
  display: block;
  height: 48px;
  width: auto;
  border-radius: var(--radius-sm);
}

/* ---- Desktop nav cluster ------------------------------------------------- */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__link {
  position: relative;
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--fs-md);
  line-height: 1;
  color: var(--navy);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}

/* Gold underline accent that grows on hover / active */
.navbar__link::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 4px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--red);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--dur-base) var(--ease-out);
}

.navbar__link:hover,
.navbar__link:focus-visible {
  color: var(--red-dark);
  background: rgba(42, 59, 110, 0.07);
}

.navbar__link:hover::after,
.navbar__link:focus-visible::after {
  transform: scaleX(1);
}

/* Active link (current section in view) */
.navbar__link.is-active {
  color: var(--red-dark);
}

.navbar__link.is-active::after {
  transform: scaleX(1);
}

/* ---- CTA --------------------------------------------------------------- */
/* Inherits .btn / .btn--primary / .btn--sm from buttons.css. On the light
   frosted bar the red CTA pops nicely — keep it red with cream text. */
.navbar__cta {
  flex: 0 0 auto;
  background: var(--red);
  border-color: var(--red);
  color: var(--cream);
  box-shadow: var(--shadow-sm);
}

.navbar__cta:hover {
  background: var(--red-dark);
  border-color: var(--red-dark);
  color: #fff;
}

/* ---- Hamburger toggle (hidden on desktop) -------------------------------- */
.navbar__toggle {
  display: none;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-md);
  background: rgba(42, 59, 110, 0.08);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: background var(--dur-fast) var(--ease-out);
}

.navbar__toggle:hover {
  background: rgba(42, 59, 110, 0.16);
}

.navbar__bar {
  display: block;
  width: 22px;
  height: 2.5px;
  border-radius: var(--radius-pill);
  background: var(--navy);
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

/* Animate to an "X" when the menu is open */
.navbar__toggle[aria-expanded="true"] .navbar__bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.navbar__toggle[aria-expanded="true"] .navbar__bar:nth-child(2) {
  opacity: 0;
}
.navbar__toggle[aria-expanded="true"] .navbar__bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ---- Focus-visible states ------------------------------------------------ */
.navbar__brand:focus-visible,
.navbar__link:focus-visible,
.navbar__toggle:focus-visible,
.navbar__cta:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
}

/* =========================================================================
   Mobile layout (< 860px): hamburger reveals a slide-down panel
   ========================================================================= */
@media (max-width: 860px) {
  .navbar__toggle {
    display: inline-flex;
  }

  .navbar__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
    padding: var(--space-5);
    background: rgba(247, 239, 223, 0.96);
    -webkit-backdrop-filter: blur(14px) saturate(1.2);
    backdrop-filter: blur(14px) saturate(1.2);
    border-bottom: 2px solid rgba(242, 184, 43, 0.55);
    box-shadow: var(--shadow-lg);

    /* Collapsed by default — slide/fade in when .is-open is set by nav.js */
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--dur-base) var(--ease-out),
                opacity var(--dur-base) var(--ease-out),
                visibility 0s linear var(--dur-base);
  }

  .navbar__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: transform var(--dur-base) var(--ease-out),
                opacity var(--dur-base) var(--ease-out),
                visibility 0s;
  }

  .navbar__links {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .navbar__link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--fs-lg);
  }

  /* Underline accent doesn't read well stacked — use a left bar instead */
  .navbar__link::after {
    left: var(--space-4);
    right: auto;
    width: 24px;
  }

  .navbar__cta {
    width: 100%;
    text-align: center;
  }
}

/* ---- Reduced motion ------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  .navbar,
  .navbar__brand,
  .navbar__link,
  .navbar__link::after,
  .navbar__toggle,
  .navbar__bar,
  .navbar__cta,
  .navbar__nav {
    transition: none !important;
  }
}