/* 공통 레이아웃: 헤더, 모바일 내비게이션, 퀵메뉴, 팝업, 푸터 */

/* 헤더 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1001;
  background-color: var(--color-white);
  transition:
    transform 0.3s,
    box-shadow 0.3s;
}

.site-header.is-scrolled {
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.1);
}

/* 스크롤을 내리면 숨기고, 올리면 다시 보여 준다. */
.site-header.is-hidden {
  transform: translateY(-100%);
  box-shadow: none;
}

/*
 * 헤더는 원본(veteransedu.net)의 화면 폭별 규칙을 그대로 따른다.
 * - 1601px 이상: 로고 칸 300px, 메뉴 오른쪽 정렬, 메뉴 위아래 여백 35px (헤더 높이 90px)
 * - 992~1600px: 로고 칸 150px, 메뉴 가운데 정렬, 메뉴 위아래 여백 20px (헤더 높이 60px)
 * - 992~1024px: 메뉴 글자 16px, 좌우 여백 1.2vw
 * - 991px 이하: 메뉴를 숨기고 햄버거 버튼
 * 메뉴 글자는 줄바꿈하지 않는다.
 */
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--container-width);
  max-width: 100%;
  margin: 0 auto;
  padding: 0 15px;
}

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  width: 150px;
}

.site-header__logo img {
  width: 192px;
  max-width: 100%;
  height: auto;
}

.site-header__logo span {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-heading);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - 310px);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 20px 1.6vw;
  color: var(--color-black);
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 3px;
  background-color: var(--color-nav-underline);
  transform: translateX(-50%);
  transition: width 0.3s;
}

.site-nav__link:hover::after {
  width: 100%;
}

.site-nav__arrow {
  display: inline-block;
  vertical-align: middle;
  transition: transform 0.2s ease;
}

.site-nav__group:hover .site-nav__arrow,
.site-nav__group:focus-within .site-nav__arrow {
  transform: rotate(180deg);
}

.site-nav__group {
  position: relative;
}

.site-nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 1002;
  min-width: 160px;
  padding: 8px 0;
  background-color: var(--color-white);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%);
  transition:
    opacity 0.25s ease,
    visibility 0.25s ease;
}

.site-nav__group:hover .site-nav__dropdown,
.site-nav__group:focus-within .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
}

.site-nav__dropdown a {
  display: block;
  padding: 10px 20px;
  color: #333333;
  font-size: 15px;
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
  transition: color 0.2s;
}

.site-nav__dropdown a:hover {
  color: var(--color-nav-dropdown-hover);
}

/* 햄버거 버튼 */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 46px;
  height: 37px;
  padding: 8px;
  border: 0;
  background: none;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-heading);
  transition:
    transform 0.3s,
    opacity 0.3s;
}

.hamburger[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* 모바일 내비게이션 */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 500px;
  height: 100%;
  padding-top: var(--header-height);
  background-color: var(--color-black);
  overflow-y: auto;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav__logo {
  margin-bottom: 30px;
}

.mobile-nav__logo img {
  max-width: 50vw;
  filter: contrast(0.2) brightness(2);
}

.mobile-nav__logo span {
  color: var(--color-white);
  font-size: 22px;
  font-weight: 800;
}

.mobile-nav__link {
  display: block;
  width: 100%;
  padding: 8px 15px;
  border: 0;
  border-bottom: 1px solid rgba(233, 233, 233, 0.1);
  background: none;
  color: var(--color-white);
  font-size: 20px;
  font-weight: 500;
  text-align: center;
}

.mobile-nav__children {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.06);
}

.mobile-nav__children a {
  display: block;
  padding: 8px 15px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  text-align: center;
}

/* 퀵메뉴 */
.quick-menu {
  position: fixed;
  top: 50%;
  right: 20px;
  z-index: 50;
  transform: translateY(-50%);
}

.quick-menu__list {
  padding: 20px 0;
  background-color: #101010;
  border-radius: 100px;
}

.quick-menu__list li + li .quick-menu__item {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.quick-menu__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 90px;
  height: 90px;
  color: var(--color-white);
  font-size: 13px;
  line-height: 1.2;
  text-align: center;
  white-space: pre-line;
}

button.quick-menu__item {
  padding: 0;
  border: 0;
  background: none;
  font-size: 13px;
}

.quick-menu__item img {
  width: 32px;
  height: 32px;
  margin-bottom: 5px;
  transition: transform 0.3s;
}

.quick-menu__item:hover img {
  transform: translateY(-3px);
}

.quick-menu__top {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90px;
  height: 90px;
  margin-top: 10px;
  border: 0;
  border-radius: 50%;
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: 12px;
  font-weight: 700;
}

/* 팝업 */
.popup-layer {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 99999;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 20px;
  max-width: calc(100vw - 40px);
  transform: translate(-50%, -50%);
}

.popup-layer[hidden],
.popup[hidden] {
  display: none;
}

.popup {
  width: 300px;
  background-color: var(--color-white);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.popup__content {
  height: 424px;
  overflow: hidden;
}

.popup__content img {
  width: 100%;
  height: auto;
}

.popup__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background-color: var(--color-text);
  color: var(--color-white);
  font-size: 13px;
}

.popup__footer label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.popup__footer button {
  border: 0;
  background: none;
  color: var(--color-white);
  font-size: 13px;
}

/* 퀵메뉴 팝업 (가을정규 시간표, 오시는 길, 에이클래스) */
.quick-modal {
  position: fixed;
  inset: 0;
  z-index: 1050;
  overflow-x: hidden;
  overflow-y: auto;
}

.quick-modal[hidden] {
  display: none;
}

.quick-modal__backdrop {
  position: fixed;
  inset: 0;
  background-color: var(--color-black);
  opacity: 0;
  transition: opacity 0.15s linear;
}

.quick-modal.is-open .quick-modal__backdrop {
  opacity: 0.5;
}

.quick-modal__dialog {
  position: relative;
  width: 900px;
  margin: 30px auto;
  overflow: hidden;
  border-radius: 6px;
  background-color: var(--color-white);
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: translateY(-25%);
  transition:
    transform 0.3s ease-out,
    opacity 0.3s linear;
}

.quick-modal__dialog--roadmap {
  width: 600px;
}

.quick-modal.is-open .quick-modal__dialog {
  opacity: 1;
  transform: translateY(0);
}

.quick-modal__header {
  position: relative;
  padding: 15px 20px;
  background-color: #222222;
}

.quick-modal__close {
  position: absolute;
  top: 10px;
  right: 15px;
  z-index: 10;
  border: 0;
  background: none;
  color: var(--color-white);
  font-size: 24px;
  line-height: 1;
}

.quick-modal__title {
  color: var(--color-white);
  font-size: 18px;
  text-align: center;
}

.quick-modal__tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
  padding-top: 10px;
}

.quick-modal__tab {
  padding: 5px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50px;
  background-color: rgba(255, 255, 255, 0.08);
  color: #cccccc;
  font-size: 14px;
  font-weight: 700;
}

.quick-modal__tab:hover,
.quick-modal__tab[aria-selected='true'] {
  border-color: #ffe9be;
  background: linear-gradient(270deg, #eeb955, #ffe9be);
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.quick-modal__body {
  padding: 15px;
}

.quick-modal__panel img {
  display: block;
  width: 100%;
  height: auto;
}

.quick-modal__roadmap-heading {
  color: #111111;
  font-size: 20px;
  font-weight: 800;
}

.quick-modal__roadmap-address {
  color: #111111;
  font-size: 18px;
}

.quick-modal__roadmap-map {
  margin-top: 20px;
  text-align: center;
}

.quick-modal__roadmap-map img {
  display: inline-block;
  max-width: 100%;
  height: auto;
}

.quick-modal__direction-heading {
  margin-top: 30px;
  color: #111111;
  font-size: 18px;
  font-weight: 800;
}

.quick-modal__roadmap-map + .quick-modal__direction-heading {
  margin-top: 20px;
}

.quick-modal__direction-line {
  color: var(--color-gray);
  font-size: 14px;
  font-weight: 300;
  white-space: pre-line;
}

.quick-modal__direction-line + .quick-modal__direction-line {
  margin-top: 15px;
}

/* 이미지 확대 보기 */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 100001;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background-color: rgba(0, 0, 0, 0.85);
  cursor: zoom-out;
}

.lightbox-overlay[hidden] {
  display: none;
}

.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  cursor: default;
}

.lightbox-overlay__close {
  position: absolute;
  top: 12px;
  right: 16px;
  width: 44px;
  height: 44px;
  border: 0;
  background: none;
  color: var(--color-white);
  font-size: 36px;
  line-height: 1;
}

/* 푸터 */
.site-footer {
  padding: 40px 15px;
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: var(--font-small);
  line-height: var(--line-text);
  text-align: center;
}

.site-footer__copyright {
  margin-top: var(--space-xxxs);
}

/* 안내 페이지 (준비 중, 404, 오류) */
.notice-page {
  display: flex;
  align-items: center;
  min-height: 60vh;
  padding: var(--section-padding) 0;
}

.notice-page__title {
  color: var(--color-heading);
  font-size: var(--font-h1);
  font-weight: 800;
}

.notice-page__text {
  margin: var(--space-xxs) 0 var(--space-mini);
  color: var(--color-gray);
  font-size: var(--font-h5);
}

@media (min-width: 1601px) {
  .site-header__logo {
    width: 300px;
  }

  .site-nav {
    justify-content: flex-end;
    width: calc(100% - 300px);
  }

  .site-nav__link {
    padding: 35px 1.6vw;
  }
}

@media (min-width: 992px) and (max-width: 1024px) {
  .site-nav__link {
    padding: 20px 1.2vw;
    font-size: 16px;
  }
}

@media (max-width: 991px) {
  .site-header__inner {
    height: var(--header-height);
  }

  .site-header__logo {
    width: 50%;
  }

  .site-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

@media (max-width: 768px) {
  .site-header__logo {
    width: 160px;
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .site-header__inner {
    width: 750px;
  }
}

@media (max-width: 991px) {
  .site-header__inner {
    padding: 8px 15px;
  }
}

@media (max-width: 767px) {
  .site-header__logo img {
    width: 160px;
  }

  /* 모바일에서는 퀵메뉴가 화면 하단 고정 바로 바뀐다. */
  .quick-menu {
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    transform: none;
  }

  .quick-menu__list {
    display: flex;
    padding: 0;
    border-radius: 0;
  }

  .quick-menu__list li {
    flex: 1;
    min-width: 0;
  }

  .quick-menu__list li + li .quick-menu__item {
    border-top: 0;
  }

  .quick-menu__item {
    width: 100%;
    height: 70px;
    line-height: 1.3;
  }

  .quick-menu__item img {
    width: 30px;
    height: 30px;
    margin-bottom: 0;
  }

  .quick-menu__top {
    display: none;
  }

  /* 모바일에서는 팝업을 한 번에 하나씩 보여 준다. */
  .popup-layer {
    display: block;
    max-width: none;
  }

  /* 팝업 바깥 화면을 어둡게 덮는다. */
  .popup {
    width: calc(100vw - 32px);
    max-width: 300px;
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.5);
  }

  .popup:not([hidden]) ~ .popup {
    display: none;
  }

  .popup__content {
    height: auto;
    max-height: 70vh;
  }

  /* 하단 고정 바에 가려지지 않도록 아래 여백을 더 둔다. */
  .site-footer {
    padding: calc(var(--unit) * 40) 15px calc(var(--unit) * 140);
  }
}

@media (max-width: 992px) {
  .quick-modal__dialog {
    width: auto;
    margin: 15px;
  }

  .quick-modal__dialog--roadmap {
    width: 600px;
    margin: 30px auto;
  }
}

@media (max-width: 768px) {
  .quick-modal__dialog,
  .quick-modal__dialog--roadmap {
    width: auto;
    margin: 10px;
  }

  .quick-modal__tab {
    padding: 4px 10px;
    font-size: 12px;
  }
}