/* Top navigation */

.navbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(30, 58, 138, 0.88);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease);
}
.navbar.is-scrolled {
  box-shadow: 0 2px 12px rgba(30, 58, 138, 0.25);
  background: rgba(30, 58, 138, 0.96);
}

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

.navbar__brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  background: #fff;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 8px rgba(30, 58, 138, 0.18),
              inset 0 0 0 1px rgba(30, 58, 138, 0.06);
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.navbar__brand:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(30, 58, 138, 0.28),
              inset 0 0 0 1px rgba(30, 58, 138, 0.06);
}
.navbar__brand img,
.navbar__brand .navbar__logo { height: 36px; width: auto; display: block; }

/* Inline-SVG logo: fonts apply from the page (Google Fonts loaded in head) */
.navbar__logo-r2 {
  font-family: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  font-style: italic;
  font-weight: 700;
}
.navbar__logo-wm {
  font-family: 'EB Garamond', Georgia, 'Times New Roman', serif;
  font-weight: 800;
}

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

.navbar__list {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-weight: var(--fw-medium);
  padding-block: var(--space-xs);
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.navbar__link:hover { color: #fff; border-bottom-color: var(--color-accent-bright); }
.navbar__link.is-active { color: #fff; border-bottom-color: var(--color-accent); }

.navbar__cta { flex-shrink: 0; }

/* Tutor portal link — subtle filled pill with lock icon, secondary to the main CTA */
.navbar__staff {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.06);
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-pill);
  transition:
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
  white-space: nowrap;
}
.navbar__staff-icon {
  display: block;
  flex-shrink: 0;
  opacity: 0.85;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.navbar__staff:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}
.navbar__staff:hover .navbar__staff-icon {
  opacity: 1;
  transform: scale(1.05);
}
.navbar__staff:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(242, 102, 24, 0.4);
}

/* Hamburger toggle */
.navbar__toggle {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.navbar__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

/* Mobile */
@media (max-width: 767px) {
  .navbar__brand { padding: 5px 12px; }
  .navbar__brand img,
  .navbar__brand .navbar__logo { height: 30px; }

  .navbar__toggle {
    display: flex;
    width: var(--tap-min);
    height: var(--tap-min);
  }

  /* The drawer is always rendered (so we can transition it).
     Visibility is controlled by transform + opacity + pointer-events. */
  .navbar__nav {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background:
      linear-gradient(180deg, rgba(30, 58, 138, 0.985) 0%, rgba(15, 37, 96, 0.985) 100%);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 16px 32px -8px rgba(15, 37, 96, 0.4);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    /* Closed state — pinned just above the bar, faded out, click-through */
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    visibility: hidden;
    transition:
      opacity var(--dur-slow) var(--ease-out),
      transform var(--dur-slow) var(--ease-out),
      visibility 0s linear var(--dur-slow);
  }
  .navbar__nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    visibility: visible;
    transition:
      opacity var(--dur-slow) var(--ease-out),
      transform var(--dur-slow) var(--ease-out),
      visibility 0s linear 0s;
  }

  .navbar__list {
    flex-direction: column;
    gap: 0;
  }
  /* Stagger each link in when the menu opens. */
  .navbar__list li {
    opacity: 0;
    transform: translateY(-6px);
    transition:
      opacity var(--dur) var(--ease-out),
      transform var(--dur) var(--ease-out);
  }
  .navbar__nav.is-open .navbar__list li { opacity: 1; transform: none; }
  .navbar__nav.is-open .navbar__list li:nth-child(1) { transition-delay: 60ms; }
  .navbar__nav.is-open .navbar__list li:nth-child(2) { transition-delay: 110ms; }
  .navbar__nav.is-open .navbar__list li:nth-child(3) { transition-delay: 160ms; }
  .navbar__nav.is-open .navbar__staff { transition-delay: 210ms; }
  .navbar__nav.is-open .navbar__cta   { transition-delay: 260ms; }

  .navbar__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--tap-min);
    padding: var(--space-md) var(--space-2xs);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: var(--fs-md);
    font-weight: var(--fw-medium);
  }
  /* Soft chevron after each link — feels like a real menu, not a list */
  .navbar__link::after {
    content: "";
    width: 8px;
    height: 8px;
    border-right: 1.5px solid rgba(255, 255, 255, 0.45);
    border-top:   1.5px solid rgba(255, 255, 255, 0.45);
    transform: rotate(45deg);
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  }
  .navbar__link:hover::after,
  .navbar__link.is-active::after {
    border-color: var(--color-accent-bright);
    transform: rotate(45deg) translate(2px, -2px);
  }
  .navbar__link.is-active { border-bottom-color: var(--color-accent); }

  .navbar__staff,
  .navbar__nav .navbar__staff {
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out),
                color var(--dur) var(--ease), background var(--dur) var(--ease),
                border-color var(--dur) var(--ease);
    margin-top: var(--space-md);
    justify-content: center;
    min-height: var(--tap-min);
  }
  .navbar__nav.is-open .navbar__staff { opacity: 1; transform: none; }

  .navbar__cta {
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out),
                background var(--dur) var(--ease);
    margin-top: var(--space-sm);
    align-self: stretch;
    justify-content: center;
    min-height: var(--tap-min);
  }
  .navbar__nav.is-open .navbar__cta { opacity: 1; transform: none; }

  .navbar__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .navbar__toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .navbar__toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  @media (prefers-reduced-motion: reduce) {
    .navbar__nav,
    .navbar__list li,
    .navbar__staff,
    .navbar__cta { transition: none !important; }
  }
}