/* ================================================================
   SECTIONS.CSS - 공통 섹션 및 컴포넌트 스타일
   여러 페이지에서 재사용 가능한 공통 스타일
   ================================================================ */

/* ================================================================
   Section Header - 공통 섹션 헤더
   ================================================================ */

.section__header {
  margin-bottom: var(--spacing-3xl);
}

.section__header h2 {
  margin-bottom: var(--spacing-md);
}

.section__header h3 {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}


/* ================================================================
   Mobile Navigation Menu - 모바일 메뉴
   ================================================================ */

.nav__mobile {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: var(--z-modal);
  display: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav__mobile--active {
  display: flex;
  flex-direction: column;
  opacity: 1;
}

.nav__mobile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav__close {
  font-size: 2rem;
  color: var(--color-text-light);
  background: none;
  border: none;
  cursor: pointer;
}

.nav__mobile-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl);
}

.nav__mobile-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  text-align: center;
}

.nav__mobile-list .nav__link {
  color: var(--color-text-light);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

/* 모바일 서브메뉴 */
.nav__mobile-list .nav__submenu {
  position: static;
  opacity: 1;
  visibility: visible;
  transform: none;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.nav__mobile-list .nav__item--has-submenu.active .nav__submenu {
  max-height: 300px;
}

.nav__mobile-list .nav__submenu-link {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-md);
  padding: var(--spacing-sm) var(--spacing-lg);
}

.nav__mobile-list .nav__submenu-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-text-light);
}

.nav__mobile-list .nav__submenu-link--active {
  color: #37B6B8;
  background-color: rgba(55, 182, 184, 0.1);
}

/* 모바일 메뉴 열릴 때 body 스크롤 방지 */
body.nav-open {
  overflow: hidden;
}


/* ================================================================
   Scroll Effects - 스크롤 효과
   ================================================================ */

/* 네비게이션 스크롤 시 그림자 효과 */
.nav--scrolled {
  box-shadow: var(--shadow-lg);
}


/* ================================================================
   Scroll Animations - 스크롤 애니메이션
   ================================================================ */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

[data-animate].animated {
  opacity: 1;
  transform: translateY(0);
}