/* ============================================================
   HEADER — Happy Blue Lessons
   ============================================================ */

/* ── Header Container ── */
.hbl-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99999;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: all var(--hbl-transition-base);
}

.hbl-header--scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--hbl-shadow-md);
}

.hbl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--hbl-max-width);
  margin: 0 auto;
  padding: 0 var(--hbl-space-lg);
  height: var(--hbl-header-height);
  transition: height var(--hbl-transition-base);
}

.hbl-header--scrolled .hbl-header__inner {
  height: var(--hbl-header-height-scrolled);
}

/* ── Logo ── */
.hbl-header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.hbl-header__logo:hover {
  text-decoration: none;
}

.hbl-header__logo-img {
  height: 64px;
  width: auto;
  object-fit: contain;
  transition: height var(--hbl-transition-base);
}

.hbl-header--scrolled .hbl-header__logo-img {
  height: 48px;
}

.hbl-mobile__logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}


/* ── Desktop Navigation ── */
.hbl-nav {
  display: none;
}

.hbl-nav__list {
  display: flex;
  align-items: center;
  gap: var(--hbl-space-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}

.hbl-nav__link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  font-family: var(--hbl-font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--hbl-gray-700);
  text-decoration: none;
  border-radius: var(--hbl-radius-md);
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--hbl-transition-fast);
  white-space: nowrap;
}

.hbl-nav__link:hover,
.hbl-nav__link:focus-visible {
  color: var(--hbl-blue-500);
  background: var(--hbl-blue-50);
}

.hbl-nav__link--dropdown {
  font-family: var(--hbl-font-body);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.hbl-nav__chevron {
  transition: transform var(--hbl-transition-fast);
  flex-shrink: 0;
}

.hbl-nav__item--mega:hover .hbl-nav__chevron,
.hbl-nav__item--mega .hbl-nav__link--dropdown[aria-expanded="true"] .hbl-nav__chevron {
  transform: rotate(180deg);
}


/* ═══════════════════════════════════════════
   MEGA MENU
   ═══════════════════════════════════════════ */
.hbl-mega {
  position: fixed;
  top: var(--hbl-header-height);
  left: 0;
  right: 0;
  width: 100%;
  padding-top: 0;

  /* Hidden by default */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--hbl-transition-base), visibility var(--hbl-transition-base), transform var(--hbl-transition-base);
  transform: translateY(-8px);
}

.hbl-header--scrolled ~ .hbl-nav .hbl-mega,
.hbl-header--scrolled .hbl-mega {
  top: var(--hbl-header-height-scrolled);
}

/* Show on hover or when aria-expanded */
.hbl-nav__item--mega:hover .hbl-mega,
.hbl-nav__item--mega:focus-within .hbl-mega,
.hbl-nav__item--mega .hbl-nav__link--dropdown[aria-expanded="true"] ~ .hbl-mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

/* Invisible hover bridge — prevents gap between nav item and mega panel */
.hbl-mega::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 0;
  right: 0;
  height: 40px;
}

.hbl-mega__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--hbl-space-xl);
  max-width: var(--hbl-max-width);
  margin: 0 auto;
  background: var(--hbl-white);
  border-radius: 0 0 var(--hbl-radius-xl) var(--hbl-radius-xl);
  padding: var(--hbl-space-xl) var(--hbl-space-2xl);
  box-shadow: var(--hbl-shadow-xl);
  border: 1px solid var(--hbl-gray-200);
  border-top: 2px solid var(--hbl-blue-500);
}

/* Mega heading */
.hbl-mega__heading {
  display: flex;
  align-items: center;
  gap: var(--hbl-space-sm);
  font-family: var(--hbl-font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--hbl-blue-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--hbl-space-md);
  padding-bottom: var(--hbl-space-sm);
  border-bottom: 2px solid var(--hbl-blue-100);
}

.hbl-mega__heading-icon {
  color: var(--hbl-blue-400);
  flex-shrink: 0;
}

/* Mega links list */
.hbl-mega__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* Individual mega link */
.hbl-mega__link {
  display: flex;
  align-items: flex-start;
  gap: var(--hbl-space-sm);
  padding: 0.625rem 0.75rem;
  border-radius: var(--hbl-radius-md);
  text-decoration: none;
  transition: all var(--hbl-transition-fast);
}

.hbl-mega__link:hover {
  background: var(--hbl-blue-50);
  text-decoration: none;
}

.hbl-mega__link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: var(--hbl-radius-md);
  overflow: hidden;
  background: var(--hbl-blue-50);
  transition: all var(--hbl-transition-fast);
}

.hbl-mega__link-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--hbl-radius-md);
}

.hbl-mega__link:hover .hbl-mega__link-icon {
  box-shadow: var(--hbl-shadow-md);
  transform: scale(1.05);
}

.hbl-mega__link-content {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.hbl-mega__link-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--hbl-gray-800);
  transition: color var(--hbl-transition-fast);
}

.hbl-mega__link:hover .hbl-mega__link-title {
  color: var(--hbl-blue-600);
}

.hbl-mega__link-desc {
  font-size: 0.8125rem;
  color: var(--hbl-gray-500);
  line-height: 1.4;
}

/* Mega footer CTA */
.hbl-mega__footer {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--hbl-space-md) var(--hbl-space-lg);
  background: var(--hbl-gray-50);
  border-radius: var(--hbl-radius-md);
  margin-top: var(--hbl-space-sm);
}

.hbl-mega__footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--hbl-gray-600);
}


/* ── Header CTA (desktop) ── */
.hbl-header__cta {
  display: none;
}


/* ═══════════════════════════════════════════
   HAMBURGER BUTTON
   ═══════════════════════════════════════════ */
.hbl-header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
  border-radius: var(--hbl-radius-md);
  transition: background var(--hbl-transition-fast);
}

.hbl-header__burger:hover {
  background: var(--hbl-gray-100);
}

.hbl-header__burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--hbl-gray-700);
  border-radius: 2px;
  transition: all var(--hbl-transition-base);
  transform-origin: center;
}

/* Burger → X animation */
.hbl-header__burger--active .hbl-header__burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hbl-header__burger--active .hbl-header__burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hbl-header__burger--active .hbl-header__burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ═══════════════════════════════════════════
   MOBILE MENU
   ═══════════════════════════════════════════ */
.hbl-mobile {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99998;
  visibility: hidden;
  pointer-events: none;
}

.hbl-mobile--open {
  visibility: visible;
  pointer-events: auto;
}

/* Overlay */
.hbl-mobile__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity var(--hbl-transition-base);
}

.hbl-mobile--open .hbl-mobile__overlay {
  opacity: 1;
}

/* Panel */
.hbl-mobile__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(360px, 85vw);
  height: 100%;
  background: var(--hbl-white);
  display: flex;
  flex-direction: column;
  box-shadow: var(--hbl-shadow-xl);
  transform: translateX(100%);
  transition: transform var(--hbl-transition-slow);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.hbl-mobile--open .hbl-mobile__panel {
  transform: translateX(0);
}

/* Mobile header */
.hbl-mobile__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--hbl-space-lg);
  border-bottom: 1px solid var(--hbl-gray-200);
  flex-shrink: 0;
}

.hbl-mobile__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--hbl-gray-600);
  border-radius: var(--hbl-radius-md);
  transition: all var(--hbl-transition-fast);
}

.hbl-mobile__close:hover {
  background: var(--hbl-gray-100);
  color: var(--hbl-gray-800);
}

/* Mobile nav list */
.hbl-mobile__nav {
  flex: 1;
  padding: var(--hbl-space-md) 0;
  overflow-y: auto;
}

.hbl-mobile__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hbl-mobile__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.875rem var(--hbl-space-lg);
  font-family: var(--hbl-font-body);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--hbl-gray-800);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  transition: all var(--hbl-transition-fast);
  text-align: left;
}

.hbl-mobile__link:hover {
  color: var(--hbl-blue-500);
  background: var(--hbl-blue-50);
}

/* Mobile chevron */
.hbl-mobile__chevron {
  transition: transform var(--hbl-transition-base);
  flex-shrink: 0;
  color: var(--hbl-gray-400);
}

.hbl-mobile__link--toggle[aria-expanded="true"] .hbl-mobile__chevron {
  transform: rotate(180deg);
  color: var(--hbl-blue-500);
}

/* Accordion sub-menu */
.hbl-mobile__sub {
  display: none;
  padding: 0 var(--hbl-space-lg) var(--hbl-space-md);
  padding-left: calc(var(--hbl-space-lg) + 0.5rem);
}

.hbl-mobile__item--accordion.is-open .hbl-mobile__sub {
  display: block;
}

.hbl-mobile__sub-heading {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--hbl-blue-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--hbl-space-sm) 0;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--hbl-blue-100);
}

.hbl-mobile__sub-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.9375rem;
  color: var(--hbl-gray-700);
  text-decoration: none;
  border-radius: var(--hbl-radius-sm);
  transition: all var(--hbl-transition-fast);
}

.hbl-mobile__sub-link svg {
  flex-shrink: 0;
  color: var(--hbl-blue-400);
}

.hbl-mobile__sub-link:hover {
  color: var(--hbl-blue-600);
  background: var(--hbl-blue-50);
}

/* Mobile CTA */
.hbl-mobile__cta {
  padding: var(--hbl-space-md) var(--hbl-space-lg);
  flex-shrink: 0;
}

/* Mobile contact */
.hbl-mobile__contact {
  display: flex;
  flex-direction: column;
  gap: var(--hbl-space-sm);
  padding: var(--hbl-space-md) var(--hbl-space-lg) var(--hbl-space-xl);
  border-top: 1px solid var(--hbl-gray-200);
  flex-shrink: 0;
}

.hbl-mobile__contact a {
  font-size: 0.875rem;
  color: var(--hbl-gray-600);
  text-decoration: none;
}

.hbl-mobile__contact a:hover {
  color: var(--hbl-blue-500);
}


/* ═══════════════════════════════════════════
   BODY OFFSET (for fixed header)
   ═══════════════════════════════════════════ */
body {
  padding-top: var(--hbl-header-height);
}

/* WordPress admin bar offset */
.admin-bar .hbl-header {
  top: 32px;
}

.admin-bar body {
  padding-top: calc(var(--hbl-header-height) + 32px);
}

@media screen and (max-width: 782px) {
  .admin-bar .hbl-header {
    top: 46px;
  }
  .admin-bar body {
    padding-top: calc(var(--hbl-header-height) + 46px);
  }
}


/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  .hbl-mobile__panel {
    width: min(400px, 50vw);
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {

  .hbl-nav {
    display: block;
  }

  .hbl-header__cta {
    display: inline-flex;
  }

  .hbl-header__burger {
    display: none;
  }

  .hbl-nav__item--mega {
    position: relative;
  }

  body {
    padding-top: var(--hbl-header-height);
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  .hbl-header,
  .hbl-header__inner,
  .hbl-mega,
  .hbl-mobile__panel,
  .hbl-mobile__overlay,
  .hbl-header__burger-line,
  .hbl-nav__chevron,
  .hbl-mobile__chevron {
    transition: none;
  }
}