/* Header - Light & Professional Theme */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: #fff;
  backdrop-filter: blur(10px);
  box-shadow: none;
  z-index: var(--z-fixed);
  transition: all var(--transition-base) var(--ease-smooth), transform 0.3s ease;
}

.header.scrolled {
  background: #fff;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.header-logo {
  height: 40px;
  transition: opacity var(--transition-base);
}

.header-logo:hover {
  opacity: 0.8;
}

/* Navigation */
.header-nav {
  display: flex;
  align-items: center;
  gap: 48px;
  height: 100%;
}

.header-menu {
  display: flex;
  align-items: center;
  gap: 48px;
  height: 100%;
}

.header-menu-item {
  display: flex;
  align-items: center;
  position: relative;
  height: 100%;
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.header.scrolled .header-menu-item {
  color: var(--color-text-primary);
}

.header-menu-item::after {
  content: '';
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent-primary);
  transition: width var(--transition-base) var(--ease-smooth);
}

.header-dropdown:hover .header-menu-item {
  color: var(--color-accent-primary);
}

.header-dropdown:hover .header-menu-item::after {
  width: 100%;
}

.header-menu-item.active {
  color: var(--color-accent-primary);
}

/* Dropdown */
.header-dropdown {
  display: flex;
  align-items: center;
  position: relative;
  height: 100%;
}

/* 투명한 브릿지 영역 추가 - hover 끊김 방지 */
.header-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 16px;
  background: transparent;
  pointer-events: auto;
}

.header-dropdown-menu {
  position: absolute;
  top: calc(100% - 10px);
  left: 0;
  min-width: 240px;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: 16px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base) var(--ease-smooth);
  box-shadow: var(--shadow-lg);
}

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

.header-dropdown-item {
  display: block;
  padding: 12px 24px;
  font-size: var(--font-size-body-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}

.header-dropdown-item:hover {
  background: var(--color-bg-regular);
  color: var(--color-accent-primary);
}

/* Mobile Toggle */
.header-mobile-toggle {
  display: none;
  width: 32px;
  height: 28px;
  flex-direction: column;
  justify-content: space-around;
  cursor: pointer;
  z-index: calc(var(--z-fixed) + 10);
}

.header-mobile-toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base) var(--ease-smooth);
}

.header-mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 5px);
}

.header-mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.header-mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -6px);
}

/* Mobile Menu */
.header-mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(100vh);
  background: rgba(255, 255, 255, 1);
  backdrop-filter: blur(20px);
  padding: 0;
  transform: translateY(-100%);
  transition: transform var(--transition-base) var(--ease-smooth);
  overflow-y: auto;
  z-index: calc(var(--z-fixed) - 1);
}

.header-mobile-menu.active {
  transform: translateY(0);
}

.header-mobile-logo {
  position: sticky;
  padding: 20px 40px;
  top: 0;
  background: white;
}

.header-mobile-menu-wrap {
  padding: 0 40px 0;
}

.header-mobile-menu-wrap .depth1:first-child {
  padding-top: 0;
}

.header-mobile-menu-wrap .depth1 {
  padding: 20px 0;
  border-bottom: 1px solid #e1e1e1;
}

.header-mobile-menu-wrap .depth1:last-child {
  border-bottom: none;
}

.header-mobile-menu-item {
  display: block;
  font-size: 20px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  padding: 8px 0;
  transition: color var(--transition-base);
}

.header-mobile-menu-item:hover {
  color: var(--color-accent-primary);
}

.header-mobile-submenu {
  margin-top: 8px;
}

.header-mobile-submenu-item {
  display: block;
  font-size: 16px;
  font-weight: var(--font-weight-regular);
  color: var(--color-text-secondary);
  padding: 8px 0;
  transition: color var(--transition-base);
}

.header-mobile-submenu-item:hover {
  color: var(--color-accent-primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .header {
    height: 60px;
  }
  
  .header-container {
    padding: 0 40px;
  }
  
  .header-logo {
    height: 32px;
  }
  
  .header-nav {
    display: none;
  }
  
  .header-mobile-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 20px;
  }

  .header-mobile-logo {
    padding: 20px;
  }

  .header-mobile-menu-wrap {
    padding: 0 20px 0;
  }
}