/* 상단 브랜드 */
.brand {
  position: relative;
  text-decoration: none;
  padding: 0.75rem 1rem;
  background-color: var(--text-secondary);
  border: solid var(--text-shadow);
  border-width: 0 0.2rem 0.2rem 0;
}

.brand:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0.35rem;
  background: var(--accent-ribbon);
}


/* 공간이 부족한 구간에서 세로 정렬 */
@media (max-width: 640px){
  .nav{
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
}
/* 내비게이션: 사용자가 준 nav 스타일의 느낌을 유지하되, nth-child flex-grow 규칙은 제거 */
.nav {
  position: relative;
  padding: 0.4rem 1.0rem 0.4rem 1.2rem;
  display: flex;
  flex-direction: row;
  gap: 2.0rem;

  background-color: var(--text-secondary);
  border: solid var(--text-shadow);
  border-width: 0 0.2rem 0.2rem 0;
}

.nav:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0.35rem;
  background: var(--accent-ribbon);
}

.nav-link {
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-bottom: 0.1rem solid transparent;
}

.nav-link:hover {
  border-bottom-color: var(--text-primary);
}

.nav-link.is-active {
  border-bottom-color: var(--text-primary);
}

/* 카드 */
.card {
  position: relative;
  background-color: var(--surface-strong);
  padding: 1rem 1rem 1.25rem 1rem;

  border: solid var(--text-shadow);
  border-width: 0 0.2rem 0.2rem 0;
  box-shadow: var(--shadow-1);
}

.card:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0.30rem;
  background-color: var(--text-primary);
  opacity: 0.35;
}

.card p {
  margin-bottom: 0.75rem;
}

/* 버튼(앵커용): 원본의 button 효과를 단조롭게 변형 */
.btn {
  display: inline-block;
  width: 100%;
  text-align: center;
  text-decoration: none;

  padding: 0.6rem 0.5rem;
  background-color: var(--text-shadow);
  color: var(--text-primary);

  position: relative;
  z-index: 1;

  transition: color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

.btn:after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  background-color: var(--text-primary);
  z-index: -1;
  transition: width 0.2s ease-out;
}

.btn:hover {
  background-color: transparent;
  color: var(--text-secondary);
  box-shadow: 0.2em 0.2em 0.1em 0 var(--text-shadow);
}

.btn:hover:after {
  width: 100%;
}

.btn:active {
  color: var(--text-primary);
}

.btn:active:after {
  background-color: var(--text-secondary);
  width: 100%;
}

.btn-primary {
  background-image: var(--accent-ribbon);
  background-size: 100% 100%;
  color: var(--text-primary);
}

.btn-primary:after {
  background-color: var(--text-primary);
}

/* 보조 링크 */
.link {
  display: inline-block;
  margin-top: 0.75rem;
  text-underline-offset: 0.25rem;
}

/* 하단 빠른 링크 */
.quick-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.5rem 0 1.25rem 0;
}

.pill {
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  background-color: var(--text-secondary);
  border: solid var(--text-shadow);
  border-width: 0 0.2rem 0.2rem 0;
  box-shadow: var(--shadow-1);
}

.pill:hover {
  box-shadow: var(--shadow-2);
}

/* 헬퍼 */
.hint { margin: 0; }

/* 소개/본문 */
.content { margin: 0 0 1rem 0; }

.small {
  font-size: 0.95rem;
  color: rgba(69, 65, 56, 0.85);
}

/* 2열 비교 */
.diff {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 0.75rem 0 0.75rem 0;
}

@media (min-width: 860px) {
  .diff { grid-template-columns: 1fr 1fr; }
}

.diff-col {
  background-color: var(--surface);
  padding: 0.75rem;
  border: 0.1rem solid var(--text-shadow);
}

/* 문의 연락처 */
.contact-list {
  display: grid;
  gap: 0.75rem;
  margin: 0.75rem 0 0.75rem 0;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;

  background-color: var(--surface);
  border: 0.1rem solid var(--text-shadow);
  padding: 0.75rem;
}

.contact-name { letter-spacing: 0.08rem; }
.contact-phone { opacity: 0.85; }
.card-join h2{
  margin-bottom: 0.75rem;
}

.join-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 860px){
  .join-grid{
    grid-template-columns: 1fr 1fr;
  }
}

.join-item{
  background-color: var(--surface);
  border: 0.1rem solid var(--text-shadow);
  padding: 0.75rem;
}

.join-item h3{
  margin: 0 0 0.5rem 0;
  border: none;
  padding: 0;
  text-transform: none;
  letter-spacing: 0.1rem;
}

.join-item p{
  margin: 0 0 0.75rem 0;
  opacity: 0.9;
}

/* join-footer를 그리드 전체 폭으로 */
.join-footer{
  grid-column: 1 / -1;     /* .grid 내부에 있을 때 전체 폭 */
  width: 100%;
}

/* 링크 영역을 패널처럼 보이게(선택: 깔끔한 박스) */
.join-footer{
  background-color: var(--surface-strong);
  border: solid var(--text-shadow);
  border-width: 0 0.2rem 0.2rem 0;
  box-shadow: var(--shadow-2);
  padding: 0 0.7rem;
}

/* 토글 대상 박스 */
.info-box{
  margin-top: 0.75rem;

  background-color: var(--surface);
  border: 0.1rem solid var(--text-shadow);
  box-shadow: var(--shadow-1);

  overflow: hidden;
  max-height: 0;
  opacity: 0;

  padding: 0; /* 닫힘: 패딩 없음 */
  transition: max-height 240ms ease, opacity 180ms ease, padding 240ms ease;
}

.info-box.is-open{
  max-height: 1200px;
  opacity: 1;
  margin-bottom: 0.75rem;
  padding: 0.9rem; /* 열림: 패딩 보이게 */
}


.info-box p{
  margin: 0 0 0.75rem 0;
}

.info-box p:last-child{
  margin-bottom: 0;
}
.header-inner{
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-actions{
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 데스크탑에서는 MENU 버튼 숨김 */
.menu-toggle{
  display: none;
  padding: 0.45rem 0.6rem;
  font-size: 0.95rem;
  white-space: nowrap;
}
/* 기본: 데스크탑에서는 MENU 버튼 숨김 */
.header-actions .menu-toggle{
  display: none;
}

/* 모바일에서만 MENU 버튼 표시 */
@media (max-width: 640px){
  .header-actions .menu-toggle{
    display: inline-block;
  }
}

/* 데스크탑(모바일 아님)에서는 nav가 항상 펼쳐진 상태로 고정 */
@media (min-width: 641px){
  .nav{
    max-height: none;
    opacity: 1;
    overflow: visible;
  }
}
/* 모바일: 메뉴 접었다가 펼치기 */
@media (max-width: 640px){
  .header-inner{
    flex-wrap: wrap;
    align-items: flex-start;
  }

  /* nav를 한 줄 아래로 내리고, 기본은 닫힘 */
  .nav{
    width: 100%;
    order: 3;

    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;

    overflow: hidden;
    max-height: 0;
    opacity: 0;

    transition: max-height 220ms ease, opacity 160ms ease;
  }

  /* 열림 상태 */
  .nav.is-open{
    max-height: 400px;
    opacity: 1;
    margin-top: 0.75rem;
  }
}

.theme-toggle{
  margin-left: auto;   /* 오른쪽 끝으로 밀기 */
  padding: 0.45rem 0.6rem;
  font-size: 0.95rem;
  white-space: nowrap;
}