/* ======================= */
/* [[[[ SKIP LINK ]]]]     */
/* ======================= */

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 1rem;
  background: #fff;
  color: #2B3D50;
  z-index: var(--z-max);
}

.skip-link:focus {
  left: 0;
}


/* ======================= */
/* [[[[ MAIN HEADER ]]]]   */
/* ======================= */

.site-header {
  border-bottom: solid 1px #b0c0d2;
}

/* The wrapper inherits the grid boundaries */
.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  height: 6.5rem;
}

a.site-header__logo-link img {
  height: 4rem;
  width: auto;
  display: block;
}

a.site-header__logo-link .site-header__logo-monotone {
  display: none;
}


/* ============================ */
/* [[[[ DESKTOP NAVIGATION ]]]] */
/* ============================ */

.site-nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
}


/* --- Standard links --- */

.site-nav__link {
  margin-left: 0.5rem;
  margin-right: 0.5rem;
  font-size: 1rem;
  text-decoration: none;
  color: var(--color-primary-variant);
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
}

.site-nav__link span {
  padding-bottom: 0.25rem;
  border-bottom: solid 0.1rem transparent;
  transition: border-color 0.2s ease;
}

.site-nav__link:hover span {
  border-bottom: solid 0.1rem var(--color-primary-variant);
}

/* Active State */
.site-nav__link.site-nav__link--active {
  color: var(--color-primary-variant);
  border-bottom: none !important;
}

.site-nav__link.site-nav__link--active span {
  border-bottom: solid 0.1rem var(--color-accent) !important;
}

/* --- Dropdown --- */

.site-nav__dropdown {
  position: relative;
  display: flex;
  align-items: center;
}


a.site-nav__link.site-nav__dropdown-trigger {
  cursor: pointer;
  padding: 0;
}


.site-nav__dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% + 1rem);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-white);
  min-width: 260px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: var(--z-header);
  flex-direction: column;
  border-top: solid 0.2rem var(--color-primary);
  border-radius: 0rem 0rem 0.5rem 0.5rem;
}

/* 2. Transparent Bridge (Ensures hover state is maintained) */
.site-nav__dropdown-panel::before {
  content: '';
  position: absolute;
  top: -2.5rem;
  left: 0;
  right: 0;
  height: 2.5rem;
  background: transparent;
}

/* 3. Speech Bubble Arrow */
.site-nav__dropdown-panel::after {
  content: '';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 10px solid var(--color-primary);
}

/* Show panel on hover or keyboard focus */

.site-nav__dropdown:hover .site-nav__dropdown-panel,
.site-nav__dropdown:focus-within .site-nav__dropdown-panel {
  display: flex;
}

/* Caret Styling & Animation */
.site-nav__dropdown-caret {
  width: 12px;
  height: auto;
  margin-left: 0.2rem;
  transition: transform 0.3s ease;
  vertical-align: middle;
}

.site-nav__dropdown-caret path {
  stroke: var(--color-primary-variant);
  transition: stroke 0.2s ease;
}

/* Rotate on hover (Desktop) */
.site-nav__dropdown:hover .site-nav__dropdown-caret,
.site-nav__dropdown:focus-within .site-nav__dropdown-caret {
  transform: rotate(180deg);
}

.site-nav__sub-link {
  display: block;
  width: fit-content;
  padding: 0.5rem 0 0.25rem 0;
  text-decoration: none;
  color: var(--color-primary-variant);
  border-bottom: solid 0.1rem var(--color-white);
  font-size: 1rem;
  transition: background-color 0.2s, color 0.2s;
  white-space: nowrap;
}

.site-nav__sub-link:hover {
  border-bottom: .1rem solid var(--color-primary-variant);
}


/* Active State for Sub-links (Desktop) */
.site-nav__sub-link.site-nav__sub-link--active {
  color: var(--color-primary-variant);
  border-bottom: solid 0.1rem var(--color-accent) !important;
}

/* ======================= */
/* [[[[ MOBILE TOGGLE ]]]] */
/* ======================= */

/* ... inside @media (max-width: 1125px) ... */

.hamburger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: var(--z-max);
  grid-column: 2;
  justify-self: end;
}


.hamburger-toggle .site-header__toggle-line {
  display: block;
  height: 2px;
  border-radius: 2px;
  margin: 2px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-toggle .site-header__toggle-line--1 {
  width: 24px;
  background-color: rgba(255, 255, 255, 0.65);
}

.hamburger-toggle .site-header__toggle-line--2 {
  width: 30px;
  background-color: rgba(255, 255, 255, 0.8);
}

.hamburger-toggle .site-header__toggle-line--3 {
  width: 24px;
  background-color: rgba(255, 255, 255, 1);
}

/* --- Hamburger animation --- */

.hamburger-toggle.site-header__toggle--active .site-header__toggle-line--1 {
  transform: translateY(8px) rotate(45deg);
}


.hamburger-toggle.site-header__toggle--active .site-header__toggle-line--2 {
  opacity: 0;
}


.hamburger-toggle.site-header__toggle--active .site-header__toggle-line--3 {
  transform: translateY(-8px) rotate(-45deg);
}




/* =========================== */
/* [[[[ RESPONSIVE STYLES ]]]] */
/* =========================== */

@media (max-width: 1160px) {
  a.site-header__logo-link img {
    height: 3.5rem;
  }
}

@media (max-width: 1125px) {

  .site-header {
    padding-left: var(--page-gutter);
    padding-right: var(--page-gutter);
    transition: background-color 0.3s ease;
    /* Smooth transition */
  }

  .site-header.site-header--menu-open {
    background-color: var(--color-primary-variant);
    border-bottom: solid 1px var(--color-accent-light);
  }

  a.site-header__logo-link .site-header__logo-colour {
    display: block;
  }

  a.site-header__logo-link .site-header__logo-monotone {
    display: none;
  }

  .site-header.site-header--menu-open a.site-header__logo-link .site-header__logo-colour {
    display: none;
  }

  .site-header.site-header--menu-open a.site-header__logo-link .site-header__logo-monotone {
    display: block;
  }


  .hamburger-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .hamburger-toggle .site-header__toggle-line--1 {
    background-color: rgb(from var(--color-primary) r g b / 0.65);
  }

  .hamburger-toggle .site-header__toggle-line--2 {
    background-color: rgb(from var(--color-primary) r g b / 0.8);
  }

  .hamburger-toggle .site-header__toggle-line--3 {
    background-color: rgb(from var(--color-primary) r g b / 1);
  }

  .site-header.site-header--menu-open .hamburger-toggle .site-header__toggle-line--1 {
    background-color: rgba(255, 255, 255, 0.65);
  }

  .site-header.site-header--menu-open .hamburger-toggle .site-header__toggle-line--2 {
    background-color: rgba(255, 255, 255, 0.8);
  }

  .site-header.site-header--menu-open .hamburger-toggle .site-header__toggle-line--3 {
    background-color: rgba(255, 255, 255, 1);
  }

  /* --- Mobile menu container --- */
  .site-nav {
    display: none;
    position: absolute;
    top: 6.5rem;
    left: 0;
    right: 0;
    width: 100%;
    min-height: calc(100vh - 6.5rem);
    background-color: var(--color-primary-variant);
    transition: background-color 0.3s ease;
    padding: 2rem;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    gap: 0.5rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: var(--z-max);
  }


  .site-nav.site-nav--open {
    display: flex;
  }

  /* --- Mobile menu links --- */
  .site-nav__link {
    width: 100%;
    font-size: 1.2rem;
    margin: 0;
    padding: 1rem 0;
    color: var(--color-accent-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  .site-nav__link.site-nav__link--active {
    border-bottom: 1px solid var(--color-white);
  }

  /* --- Dropdown menu --- */
  .site-nav__dropdown {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    position: static;
  }

  .site-nav__dropdown-panel {
    position: static;
    width: 100%;
    box-shadow: none;
    border-top: none;
    padding: 0;
    background: transparent;
    border-radius: 0;

    display: none;
    flex-direction: column;
    gap: 0;
    transform: none;
  }

  .site-nav__dropdown-panel.site-nav__dropdown-panel--open {
    display: flex;
    animation: slideDown 0.3s ease forwards;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Reset hover behavior on mobile to prevent double-open */
  .site-nav__dropdown:hover .site-nav__dropdown-panel:not(.site-nav__dropdown-panel--open) {
    display: none;
  }

  .site-nav__dropdown:hover .site-nav__dropdown-panel.site-nav__dropdown-panel--open {
    display: flex;
  }


  /* Restore trigger interactivity */
  a.site-nav__link.site-nav__dropdown-trigger {
    display: block;
    width: 100%;
    text-align: left;
    margin: 0;
    padding: 1rem 0 0.5rem 0;
    pointer-events: auto;
    color: var(--color-accent-light);
    opacity: 1;
    border: none;
    text-transform: none;
    letter-spacing: normal;
    cursor: pointer;
  }

  /* Caret Color on Mobile */
  .site-nav__dropdown-caret path {
    stroke: var(--color-accent-light);
  }

  /* Rotate caret when open */
  .site-nav__dropdown-trigger[aria-expanded="true"] .site-nav__dropdown-caret {
    transform: rotate(180deg);
  }

  /* Hide the desktop arrow on mobile */
  .site-nav__dropdown-panel::after {
    display: none;
  }

  /* Indent sub-links */
  .site-nav__sub-link {
    padding: 0.75rem 0 0.25rem 1.5rem;
    width: fit-content;
    font-size: 1.4rem;
    color: var(--color-accent-light);
    border-left: none;
    border-bottom: 0.1rem solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* Mobile Links Base Styles */
  .site-nav__link {
    width: fit-content;
    font-size: 1.4rem;
    margin: 0;
    padding: 1rem 0 0.25rem 0;
    color: var(--color-accent-light);
    border-bottom: 0.1rem solid transparent;
  }

  .site-nav__link:hover,
  .site-nav__sub-link:hover {
    border-bottom: 0.1rem solid var(--color-accent-light);
  }

  /* Active State */
  .site-nav__link.site-nav__link--active,
  .site-nav__sub-link.site-nav__sub-link--active {
    color: var(--color-white);
    border-bottom: 0.1rem solid var(--color-white);
  }
}