/**
 * ============================================
 * 워크캠프 2026 리뉴얼 - Header (GNB) 스타일
 * ============================================
 */

/* ========== Header Base ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: transparent;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-md);
}

.header--dark {
    background-color: var(--color-bg-dark);
}

.header__inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========== Logo ========== */
.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header__logo img {
    height: 40px;
    width: auto;
}

/* 기본 상태: 흰 로고 표시, 네이비 로고 숨김 */
.header__logo-img--dark {
    display: none;
}

.header__logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.header--dark .header__logo-text,
.header--transparent .header__logo-text {
    color: var(--color-text-white);
}

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

/* ========== Navigation ========== */
.header__nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 60px;
}

.header__nav-item {
    position: relative;
}

.header__nav-link {
    display: flex;
    align-items: center;
    font-size: 16px;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-text-white);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
    text-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.header--scrolled .header__nav-link {
    color: var(--color-text-body);
    text-shadow: none;
}

.header__nav-link:hover,
.header__nav-link--active {
    color: var(--color-primary);
}

/* 하단바 제거 - 색상만으로 호버/활성 표시 */

/* ========== Dropdown (Desktop) ========== */
.header__dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    padding: var(--spacing-sm) 0;
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(-10px);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}

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


.header__dropdown-item {
    display: block;
    padding: 10px var(--spacing-lg);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-body);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.header__dropdown-item:hover {
    background-color: var(--color-bg-section);
    color: var(--color-primary);
}

/* ========== Actions ========== */
.header__actions {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.header__login-link {
    font-size: 16px;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-text-white);
    transition: color var(--transition-fast);
    text-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.header--scrolled .header__login-link {
    color: var(--color-text-body);
    text-shadow: none;
}

.header__login-link:hover {
    color: var(--color-primary);
}

/* ========== 서브페이지 헤더 (header--sub) ========== */
.header--sub {
    position: relative;
    background-color: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border-light);
}

/* 서브페이지: 로고 - 네이비 로고 표시 */
.header--sub .header__logo-img--white {
    display: none;
}

.header--sub .header__logo-img--dark {
    display: block;
}

/* 서브페이지: 네비게이션 링크 - 검정색, 호버 시 오렌지 */
.header--sub .header__nav-link {
    color: var(--color-text-body);
    text-shadow: none;
}

.header--sub .header__nav-link:hover {
    color: var(--color-primary);
}

/* 서브페이지: 선택된 메뉴 - 오렌지 + 굵게, 하단바 없음 */
.header--sub .header__nav-link--active {
    color: var(--color-primary);
    font-weight: 900;
}

.header--sub .header__nav-link--active::after {
    display: none;
}

.header--sub .header__nav-link:hover::after {
    display: none;
}

/* 서브페이지: LOGIN 링크 */
.header--sub .header__login-link {
    color: var(--color-text-body);
    text-shadow: none;
}

.header--sub .header__login-link:hover {
    color: var(--color-primary);
}

/* 서브페이지: 모바일 메뉴 버튼 */
.header--sub .header__menu-btn span {
    background-color: var(--color-text-body);
}

/* ========== Mobile Menu Button ========== */
.header__menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    cursor: pointer;
}

.header__menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-body);
    transition: all var(--transition-fast);
}

.header--dark .header__menu-btn span,
.header--transparent .header__menu-btn span {
    background-color: var(--color-text-white);
}

.header__menu-btn--active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-btn--active span:nth-child(2) {
    opacity: 0;
}

.header__menu-btn--active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Mobile Navigation ========== */
.header__mobile-nav {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-white);
    padding: var(--spacing-xl);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.header__mobile-nav--active {
    opacity: 1;
    visibility: visible;
}

.header__mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.header__mobile-nav-link {
    display: block;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-body);
    border-bottom: 1px solid var(--color-border-light);
}

.header__mobile-nav-link:hover {
    color: var(--color-primary);
}

/* 모바일 서브메뉴 */
.header__mobile-nav-item--has-sub {
    border-bottom: 1px solid var(--color-border-light);
}

.header__mobile-nav-link--parent {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: none;
}

.header__mobile-nav-link--parent::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-text-body);
    border-bottom: 2px solid var(--color-text-body);
    transform: rotate(45deg);
    transition: transform var(--transition-fast);
}

.header__mobile-nav-item--has-sub.is-open .header__mobile-nav-link--parent::after {
    transform: rotate(-135deg);
}

.header__mobile-sub {
    display: none;
    padding-left: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
}

.header__mobile-nav-item--has-sub.is-open .header__mobile-sub {
    display: block;
}

.header__mobile-sub-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
}

.header__mobile-sub-link:hover {
    color: var(--color-primary);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .header__nav-list {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header__inner {
        height: 64px;
    }

    .header__nav {
        display: none;
    }

    .header__menu-btn {
        display: flex;
    }

    .header__mobile-nav {
        display: block;
        top: 64px;
    }

    .header__actions {
        gap: var(--spacing-sm);
    }

    .header__login-btn {
        padding: var(--spacing-xs) var(--spacing-md);
    }
}