/*
 * Shared nav behaviors for INDEX.jsp / CAMP02_apply.jsp
 * Keep nav layout fixes centralized here.
 */

@media (min-width: 992px) {
  #mainNav .container {
    overflow: visible !important;
  }

  #mainNav #mainNavLinks {
    min-height: 3.45rem;
    align-items: center;
  }

  #mainNav #mainNavLinks > .nav-item {
    display: inline-flex;
    align-items: center;
  }

  #mainNav .nav-lang-switch {
    margin-left: 0.3rem;
  }

  #mainNav .nav-lang-switch .lang-switch-group {
    display: inline-grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.2rem;
    padding: 0.22rem;
    border-radius: 999px;
    border: 1px solid rgba(170, 215, 230, 0.34);
    background:
      linear-gradient(150deg, rgba(16, 34, 58, 0.88), rgba(11, 24, 42, 0.82));
    box-shadow:
      0 0 0 1px rgba(155, 216, 233, 0.1) inset,
      0 8px 20px rgba(4, 10, 24, 0.4);
  }

  #mainNav .nav-lang-switch .lang-switch-group > input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  #mainNav .nav-lang-switch .lang-switch-group > label {
    min-width: 2.2rem;
    border: 0;
    border-radius: 999px;
    padding: 0.25rem 0.55rem !important;
    font-size: 0.78rem !important;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 0.04em;
    text-align: center;
    cursor: pointer;
    color: rgba(221, 238, 248, 0.82);
    background: transparent;
    box-shadow: none;
    transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease;
  }

  #mainNav .nav-lang-switch .lang-switch-group > label:hover,
  #mainNav .nav-lang-switch .lang-switch-group > input[type="radio"]:focus-visible + label {
    color: #fff;
    background: rgba(163, 211, 230, 0.12);
  }

  #mainNav .nav-lang-switch .lang-switch-group > input[type="radio"]:checked + label {
    color: #1f2a36;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(236, 243, 250, 0.94));
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.72) inset,
      0 6px 12px rgba(5, 18, 33, 0.24);
  }

  #mainNav .nav-apply-item {
    width: auto !important;
  }

  #mainNav .nav-apply-item > .btn {
    width: auto !important;
    white-space: nowrap;
  }
}

/* 992~1240: avoid nav wrapping after adding language switch */
@media (min-width: 992px) and (max-width: 1240px) {
  #mainNav .navbar-brand {
    gap: 0.65rem !important;
  }

  #mainNav .navbar-brand small {
    display: block !important;
    font-size: 0.675em;
    line-height: 1.15;
    white-space: nowrap;
  }

  #mainNav #mainNavLinks {
    gap: 0.2rem !important;
  }

  #mainNav .navbar-nav > .nav-item {
    flex: 0 0 auto;
  }

  #mainNav .navbar-nav .nav-link {
    white-space: nowrap !important;
    font-size: 0.94rem !important;
    padding-left: 0.42rem !important;
    padding-right: 0.42rem !important;
  }

  #mainNav .lang-switch-group > label {
    padding: 0.24rem 0.5rem !important;
    font-size: 0.85rem !important;
    white-space: nowrap;
  }

  #mainNav .btn.rounded-pill {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
    white-space: nowrap;
  }
}

/* Mobile / tablet menu redesign for variable viewport widths. */
@media (max-width: 991.98px) {
  #mainNav .navbar-collapse#navbarMenu.show,
  #mainNav .navbar-collapse#navbarMenu.collapsing {
    padding-left: max(1rem, env(safe-area-inset-left, 0)) !important;
    padding-right: max(1rem, env(safe-area-inset-right, 0)) !important;
    padding-top: calc(4.15rem + env(safe-area-inset-top, 0)) !important;
  }

  #mainNav .navbar-nav.main-nav__links,
  #mainNav #mainNavLinks {
    width: min(100%, 32rem) !important;
    margin: 0 auto;
    padding-top: 3.45rem !important;
    padding-bottom: 1.2rem !important;
    gap: 0.8rem !important;
    min-height: calc(100dvh - 5.5rem);
  }

  #mainNav .navbar-nav > .nav-item {
    width: 100% !important;
    margin: 0.08rem 0 !important;
  }

  #mainNav .navbar-nav .nav-link {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.78rem 1rem !important;
    font-size: clamp(1rem, 2.85vw, 1.1rem) !important;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1.5;
    text-align: center;
    border-radius: 0.95rem;
    border: 0;
    color: rgba(255, 255, 255, 0.95);
  }

  #mainNav .navbar-nav .nav-link:hover,
  #mainNav .navbar-nav .nav-link:focus-visible {
    transform: translateY(-1px);
    background:
      linear-gradient(150deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1)),
      linear-gradient(220deg, rgba(84, 47, 153, 0.38), rgba(20, 79, 120, 0.24));
    box-shadow:
      0 1px 0 rgba(255, 255, 255, 0.3) inset,
      0 0 0 1px rgba(255, 255, 255, 0.1) inset,
      0 14px 28px rgba(0, 0, 0, 0.32);
  }

  #mainNav .navbar-nav .nav-link:active {
    transform: translateY(0);
  }

  #mainNav #navPastEventsItem #navPastEventsYearsMenu.dropdown-menu.nav-past-events-years-list {
    margin: 0.42rem 0 0.15rem 0 !important;
    padding: 0.22rem 0.2rem 0.18rem !important;
    justify-content: center;
    gap: 0.35rem 0.5rem;
  }

  #mainNav #navPastEventsItem #navPastEventsYearsMenu .nav-past-events-year {
    min-height: auto;
    padding: 0.58rem 1rem !important;
  }

  #mainNav .navbar-nav > .nav-item.mt-2.mt-lg-0,
  #mainNav .navbar-nav > .nav-item.nav-lang-switch {
    margin-top: 0.18rem !important;
  }

  #mainNav .nav-apply-item {
    display: flex;
    justify-content: center;
  }

  #mainNav .nav-apply-item > .btn {
    width: auto !important;
    min-width: 10.5rem;
    max-width: 100%;
    padding-left: 1.2rem !important;
    padding-right: 1.2rem !important;
    white-space: nowrap;
  }

  #mainNav .lang-switch-group {
    width: 100%;
    max-width: 8rem;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.2rem;
    padding: 0.22rem;
    border-radius: 0.95rem;
    border: 1px solid rgba(170, 215, 230, 0.34);
    background:
      linear-gradient(150deg, rgba(16, 34, 58, 0.88), rgba(11, 24, 42, 0.82));
    box-shadow:
      0 0 0 1px rgba(155, 216, 233, 0.1) inset,
      0 8px 20px rgba(4, 10, 24, 0.4);
  }

  #mainNav .lang-switch-group > input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  #mainNav .lang-switch-group > label {
    width: 100%;
    min-height: 2.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px !important;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.04em;
    cursor: pointer;
    border: 0;
    color: rgba(221, 238, 248, 0.82);
    background: transparent;
    box-shadow: none;
    transition: transform 140ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
  }

  #mainNav .lang-switch-group > label:hover,
  #mainNav .lang-switch-group > input[type="radio"]:focus-visible + label {
    transform: none;
    color: #fff;
    background: rgba(163, 211, 230, 0.12);
  }

  #mainNav .lang-switch-group > input[type="radio"]:checked + label {
    color: #1f2a36;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1), rgba(236, 243, 250, 0.94));
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.72) inset,
      0 6px 12px rgba(5, 18, 33, 0.24);
  }
}