.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  margin-top: 10px;
  padding: var(--spacing-md) 0;
  background: transparent;
  transition:
    padding var(--transition-medium),
    background-color var(--transition-medium),
    box-shadow var(--transition-medium),
    transform var(--transition-medium);
}

/* Solid state after scrolling.
   No backdrop-filter here on purpose: it would make the navbar a containing
   block and trap the position:fixed mobile overlay inside this strip */
.navbar.navbar--scrolled {
  background: rgba(238, 240, 242, 0.95);
  padding: var(--spacing-sm) 0;
  box-shadow: 0 1px 0 var(--line);
  margin-top: 0;
}

/* Hidden when scrolling down, returns on scroll up */
.navbar.navbar--hidden {
  transform: translateY(-110%);
}

/* transform would also trap the mobile overlay — neutralize while open */
.navbar:has(.nav-links--open) {
  transform: none;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 4rem);
}

.navbar-logo img {
  height: 42px;
  width: auto;
  transition: transform var(--transition-fast);
}
.navbar-logo a:hover img {
  transform: rotate(-8deg) scale(1.06);
}

.nav-links {
  /* positioning container only — layout lives on .nav-menu */
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(1.5rem, 3vw, 3rem);
}

.nav-link {
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-dim);
  padding: 6px 2px;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--vermillion);
  transform: translateX(-50%) scale(0);
  transition: transform var(--transition-medium);
}

.nav-link:hover,
.nav-link.active {
  color: var(--ink);
}
.nav-link.active::after,
.nav-link:hover::after {
  transform: translateX(-50%) scale(1.25);
}

/* Reserve pill CTA — r4-style with hard offset shadow */
.nav-cta {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: #fff;
  background: var(--vermillion);
  padding: 0.85em 1.9em;
  border-radius: 999px;
  box-shadow:
    0 5px 0 -2px rgba(38, 37, 28, 0.28),
    var(--shadow-soft);
  transition:
    transform var(--transition-pop),
    box-shadow var(--transition-pop),
    background-color var(--transition-fast);
}
.nav-cta:hover {
  background: var(--vermillion-deep);
  color: #fff;
  transform: translateY(-3px) rotate(-1.5deg);
  box-shadow:
    0 8px 0 -3px rgba(38, 37, 28, 0.24),
    var(--shadow-lift);
}
.nav-cta:active {
  transform: scale(0.94, 0.9) translateY(2px);
  box-shadow: 0 2px 0 -1px rgba(38, 37, 28, 0.3);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1200;
}

.menu-toggle span {
  width: 100%;
  height: 1.5px;
  background-color: var(--ink);
  border-radius: 2px;
  transition: all var(--transition-fast) ease;
  transform-origin: center;
}

.menu-toggle--open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle--open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle--open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ============ Mobile fullscreen menu ============ */
@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    /* scrollable on short viewports instead of clipping links */
    overflow-y: auto;
    overscroll-behavior: contain;
    background:
      radial-gradient(
        ellipse at 75% 15%,
        rgba(232, 80, 58, 0.07),
        transparent 55%
      ),
      var(--bg);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity var(--transition-medium),
      visibility 0s linear 0.6s;
    z-index: 1100;
  }

  /* margin:auto centers the group when it fits and degrades to a
     scrollable start-aligned column when it overflows —
     unlike justify-content:center, nothing gets clipped at the top */
  .nav-menu {
    margin: auto 0;
    flex-direction: column;
    align-items: center;
    gap: clamp(1.5rem, 5vh, 2.75rem);
    /* generous top clearance below the navbar bar even when scrolled up */
    padding: clamp(4.5rem, 14vh, 6.5rem) var(--spacing-md)
      clamp(2.5rem, 8vh, 4rem);
  }

  .nav-links--open {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }

  .nav-link {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 8vw, 3rem);
    text-transform: none;
    letter-spacing: 0.04em;
    color: var(--ink);
    opacity: 0;
    transform: translateY(28px);
    transition:
      opacity 0.55s var(--ease-out-expo),
      transform 0.55s var(--ease-out-expo),
      color var(--transition-fast);
  }

  .nav-link::after {
    width: 22px;
    height: 2px;
    border-radius: 0;
    bottom: -6px;
  }

  .nav-links--open .nav-link {
    opacity: 1;
    transform: translateY(0);
    transition-delay: calc(var(--i, 0) * 70ms + 150ms);
  }

  /* Pill CTA scales up into the fullscreen menu */
  .nav-cta {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    padding: 1em 2.6em;
    opacity: 0;
    transform: translateY(28px);
    transition:
      opacity 0.55s var(--ease-out-expo),
      transform 0.55s var(--ease-bounce),
      background-color var(--transition-fast),
      box-shadow var(--transition-pop);
    transition-delay: calc(var(--i, 5) * 70ms + 150ms);
  }
  .nav-links--open .nav-cta {
    opacity: 1;
    transform: translateY(0);
  }
}