/* ========================================
   HEADER COMPONENT - 헤더 컴포넌트
   ======================================== */

/* ========================================
   HEADER CONTAINER - 헤더 컨테이너
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-index-fixed);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-neutral-200);
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
}

.header--scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

/* ========================================
   LOGO - 로고
   ======================================== */

.header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__logo:hover {
  opacity: 0.8;
}

.header__logo-image {
  height: 3.5rem;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__logo:hover .header__logo-image {
  transform: scale(1.05);
}

.header__logo-text {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-extrabold);
  background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   NAVIGATION - 네비게이션
   ======================================== */

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--color-neutral-700);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  position: relative;
  overflow: hidden;
}

.header__nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  opacity: 0;
  transition: opacity var(--transition-duration-300) var(--transition-timing-function-ease);
  z-index: -1;
}

.header__nav-link:hover::before {
  opacity: 0.1;
}

.header__nav-link:hover {
  color: var(--brand-primary);
  background-color: rgba(29, 136, 177, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(29, 136, 177, 0.15);
}

.header__nav-link--active {
  color: var(--brand-primary);
  background: linear-gradient(135deg, rgba(29, 136, 177, 0.12), rgba(29, 136, 177, 0.08));
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 2px 8px rgba(29, 136, 177, 0.2);
}

.header__nav-link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--border-radius-full);
  box-shadow: 0 2px 4px rgba(29, 136, 177, 0.3);
}

/* ========================================
   NAVIGATION ICONS - 네비게이션 아이콘
   ======================================== */

.header__nav-icon {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__nav-link:hover .header__nav-icon {
  transform: scale(1.1);
}

.header__nav-arrow {
  width: 1rem;
  height: 1rem;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__nav-item--dropdown:hover .header__nav-arrow {
  transform: rotate(180deg);
}

/* ========================================
   SUBMENU - 서브메뉴
   ======================================== */

.header__submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(29, 136, 177, 0.15);
  border-radius: var(--border-radius-2xl);
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.1),
    0 8px 16px rgba(29, 136, 177, 0.1);
  padding: var(--space-4);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  z-index: var(--z-index-dropdown);
}

.header__nav-item--dropdown:hover .header__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__submenu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(255, 255, 255, 0.95);
}

.header__submenu-item {
  list-style: none;
}

.header__submenu-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-neutral-700);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-200) var(--transition-timing-function-ease);
  position: relative;
  overflow: hidden;
}

.header__submenu-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left var(--transition-duration-300) var(--transition-timing-function-ease);
}

.header__submenu-link:hover::before {
  left: 100%;
}

.header__submenu-link:hover {
  color: var(--brand-primary);
  background: linear-gradient(135deg, rgba(29, 136, 177, 0.08), rgba(29, 136, 177, 0.05));
  transform: translateX(6px);
  box-shadow: 0 2px 8px rgba(29, 136, 177, 0.15);
}

.header__submenu-icon {
  width: 1rem;
  height: 1rem;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__submenu-link:hover .header__submenu-icon {
  transform: scale(1.1);
}

/* ========================================
   DROPDOWN MENU - 드롭다운 메뉴
   ======================================== */

.header__dropdown {
  position: relative;
}

.header__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 12rem;
  background-color: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-duration-200) var(--transition-timing-function-ease);
  z-index: var(--z-index-dropdown);
  margin-top: var(--space-2);
}

.header__dropdown:hover .header__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-neutral-700);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-duration-150) var(--transition-timing-function-ease);
  border-bottom: 1px solid var(--color-neutral-100);
}

.header__dropdown-item:last-child {
  border-bottom: none;
}

.header__dropdown-item:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-600);
}

/* ========================================
   HEADER ACTIONS - 헤더 액션
   ======================================== */

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius-xl);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  box-shadow: 
    0 4px 12px rgba(29, 136, 177, 0.3),
    0 2px 4px rgba(29, 136, 177, 0.2);
  position: relative;
  overflow: hidden;
}

.header__phone::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-duration-500) var(--transition-timing-function-ease);
}

.header__phone:hover::before {
  left: 100%;
}

.header__phone:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 
    0 8px 24px rgba(29, 136, 177, 0.4),
    0 4px 8px rgba(29, 136, 177, 0.3);
  background: linear-gradient(135deg, var(--brand-accent), var(--brand-primary));
}

.header__phone-icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  transition: transform var(--transition-duration-300) var(--transition-timing-function-ease);
}

.header__phone:hover .header__phone-icon {
  transform: scale(1.1) rotate(15deg);
}

/* ========================================
   MOBILE MENU - 모바일 메뉴
   ======================================== */

.header__mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-3);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  border: none;
  cursor: pointer;
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  box-shadow: 0 2px 8px rgba(29, 136, 177, 0.2);
}

.header__mobile-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(29, 136, 177, 0.3);
  background: linear-gradient(135deg, var(--brand-accent), var(--brand-primary));
}

.header__mobile-toggle-line {
  width: 1.5rem;
  height: 2px;
  background-color: white;
  border-radius: var(--border-radius-full);
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(2) {
  opacity: 0;
}

.header__mobile-toggle--active .header__mobile-toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   MOBILE NAVIGATION - 모바일 네비게이션
   ======================================== */

.header__mobile-menu {
  position: fixed;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-neutral-200);
  padding: var(--space-6) var(--container-padding);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-duration-300) var(--transition-timing-function-ease);
  z-index: var(--z-index-mobile-menu);
  max-height: calc(100vh - 100%);
  overflow-y: auto;
}

.header__mobile-menu--active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.header__mobile-nav {
  margin-bottom: var(--space-6);
}

.header__mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__mobile-nav-item {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.header__mobile-nav-item:last-child {
  margin-bottom: 0;
}

.header__mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-4) var(--space-5);
  color: var(--color-neutral-700);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  background-color: transparent;
  border: none;
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-200) var(--transition-timing-function-ease);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.header__mobile-nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left var(--transition-duration-300) var(--transition-timing-function-ease);
}

.header__mobile-nav-link:hover::before {
  left: 100%;
}

.header__mobile-nav-link:hover {
  color: var(--brand-primary);
  background-color: rgba(29, 136, 177, 0.05);
  transform: translateX(4px);
}

.header__mobile-nav-link--active {
  color: var(--brand-primary);
  background-color: rgba(29, 136, 177, 0.1);
  font-weight: var(--font-weight-semibold);
}

/* ========================================
   MOBILE NAVIGATION ICONS - 모바일 네비게이션 아이콘
   ======================================== */

.header__mobile-nav-icon {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__mobile-nav-link:hover .header__mobile-nav-icon {
  transform: scale(1.1);
}

.header__mobile-nav-arrow {
  width: 1rem;
  height: 1rem;
  margin-left: auto;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__mobile-nav-item--dropdown.active .header__mobile-nav-arrow {
  transform: rotate(180deg);
}

/* ========================================
   MOBILE SUBMENU - 모바일 서브메뉴
   ======================================== */

.header__mobile-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-duration-300) var(--transition-timing-function-ease);
  background-color: rgba(59, 130, 246, 0.02);
  border-radius: var(--border-radius-lg);
  margin: 0 var(--space-4);
}

.header__mobile-nav-item--dropdown.active .header__mobile-submenu {
  max-height: 300px;
}

.header__mobile-submenu-item {
  list-style: none;
}

.header__mobile-submenu-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  color: var(--color-neutral-600);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-duration-200) var(--transition-timing-function-ease);
  position: relative;
  overflow: hidden;
}

.header__mobile-submenu-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left var(--transition-duration-300) var(--transition-timing-function-ease);
}

.header__mobile-submenu-link:hover::before {
  left: 100%;
}

.header__mobile-submenu-link:hover {
  color: var(--brand-primary);
  background-color: rgba(29, 136, 177, 0.05);
  transform: translateX(8px);
}

.header__mobile-submenu-icon {
  width: 1rem;
  height: 1rem;
  transition: transform var(--transition-duration-200) var(--transition-timing-function-ease);
}

.header__mobile-submenu-link:hover .header__mobile-submenu-icon {
  transform: scale(1.1);
}

/* ========================================
   MOBILE ACTIONS - 모바일 액션
   ======================================== */

.header__mobile-actions {
  padding: var(--space-6);
  border-top: 1px solid var(--color-neutral-200);
  background: linear-gradient(135deg, var(--color-neutral-50) 0%, var(--color-neutral-100) 100%);
  position: relative;
  overflow: hidden;
  margin-top: var(--space-4);
}

.header__mobile-actions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary-300), transparent);
}

/* 모바일 액션 버튼 스타일링 */
.header__mobile-actions .btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.header__mobile-actions .btn--primary {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  border: none;
  box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
}

.header__mobile-actions .btn--primary:hover {
  background: linear-gradient(135deg, #b91c1c, #dc2626);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(220, 38, 38, 0.4);
}

.header__mobile-actions .btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
}

.header__mobile-actions .btn__icon {
  margin-right: 8px;
  animation: shake 2s infinite;
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-2px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(2px);
  }
}

/* ========================================
   RESPONSIVE HEADER - 반응형 헤더
   ======================================== */

@media (max-width: 1024px) {
  .header__nav {
    gap: var(--space-6);
  }
  
  .header__nav-list {
    gap: var(--space-4);
  }
  
  .header__nav-link {
    font-size: var(--font-size-sm);
    padding: var(--space-2);
  }
  
  .header__logo-image {
    height: 3rem;
  }
}

@media (max-width: 768px) {
  .header__nav,
  .header__actions {
    display: none;
  }
  
  .header__mobile-toggle {
    display: flex;
  }
  

  
  .header__container {
    padding: var(--space-4) var(--container-padding);
  }
}

@media (max-width: 480px) {
  .header__container {
    padding: var(--space-3) var(--space-4);
  }
  
  .header__logo-image {
    height: 2.5rem;
  }
}

/* ========================================
   HEADER ANIMATIONS - 헤더 애니메이션
   ======================================== */

@keyframes header-slide-down {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.header--animate {
  animation: header-slide-down var(--transition-duration-300) var(--transition-timing-function-ease);
}

/* ========================================
   HEADER UTILITIES - 헤더 유틸리티
   ======================================== */

.header--transparent {
  background-color: transparent;
  border-bottom: none;
}

.header--transparent.header--scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--color-neutral-200);
}

.header--dark {
  background-color: var(--color-neutral-900);
  color: white;
}

.header--dark .header__nav-link {
  color: var(--color-neutral-300);
}

.header--dark .header__nav-link:hover {
  color: white;
  background-color: var(--color-neutral-800);
}

.header--dark .header__logo-image {
  filter: brightness(1.2) contrast(1.1);
}

/* ========================================
   PWA INSTALL BUTTON - PWA 설치 버튼
   ======================================== */

.header__install-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-600);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: 12px;
}

.header__install-btn:hover {
  background: var(--color-primary-700);
  transform: translateY(-1px);
}

.header__install-btn svg {
  width: 16px;
  height: 16px;
}

/* 오프라인 상태 표시 */
.offline .header__install-btn {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 모바일에서 설치 버튼 숨김 */
@media (max-width: 767px) {
  .header__install-btn {
    display: none;
  }
}

/* ========================================
   MOBILE INSTALL BUTTON - 모바일 설치 버튼
   ======================================== */

.header__mobile-install-btn {
  margin-top: 12px;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  border: none;
  color: white;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.header__mobile-install-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.header__mobile-install-btn:hover::before {
  left: 100%;
}

.header__mobile-install-btn:hover {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(29, 136, 177, 0.3);
}

.header__mobile-install-btn:active {
  transform: translateY(0);
  box-shadow: 0 4px 15px rgba(29, 136, 177, 0.2);
}

.header__mobile-install-btn .btn__icon {
  margin-right: 8px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

/* 설치 버튼 표시 애니메이션 */
.header__mobile-install-btn.show {
  animation: slideInUp 0.5s ease forwards;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 오프라인 상태에서 모바일 설치 버튼 비활성화 */
.offline .header__mobile-install-btn {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.offline .header__mobile-install-btn:hover {
  transform: none;
  box-shadow: none;
}