/**
 * 엘비콘텐츠 공통 헤더 CSS
 * Modern & Clean Design
 */

/* ===== Variables ===== */
:root {
    --header-height: 80px;
    --header-height-mobile: 64px;
    --header-bg: transparent;
    --header-bg-scrolled: #fff;
    --header-text: #fff;
    --header-text-scrolled: #333;
    --primary-color: #41b6e6;
    --transition: all 0.3s ease;
}

/* ===== Header Base ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: var(--header-bg) !important;
    transition: var(--transition);
}

/* 최상단: hover 해도 배경 투명 유지 */
.site-header:hover {
    background: transparent !important;
}

/* 스크롤 후: 배경 흰색 */
.site-header.scrolled {
    background: var(--header-bg-scrolled) !important;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

/* 스크롤 후 hover: 배경 흰색 유지 */
.site-header.scrolled:hover {
    background: var(--header-bg-scrolled) !important;
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ===== Logo ===== */
.header-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    z-index: 10;
}

.header-logo img {
    height: 32px;
    width: auto;
    transition: var(--transition);
}

.header-logo .logo-dark {
    display: none !important;
}

.header-logo .logo-white {
    display: block !important;
}

/* 최상단: 항상 흰색 로고 (hover 포함) */
.site-header:not(.scrolled) .logo-white {
    display: block !important;
}

.site-header:not(.scrolled) .logo-dark {
    display: none !important;
}

/* 스크롤 후: 다크 로고 */
.site-header.scrolled .logo-white {
    display: none !important;
}

.site-header.scrolled .logo-dark {
    display: block !important;
}

/* ===== Desktop Navigation ===== */
.header-nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 8px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 12px 20px;
    color: var(--header-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: var(--transition);
    border-radius: 8px;
}

.nav-link:hover {
    background: rgba(255,255,255,0.1);
}

.site-header.scrolled .nav-link {
    color: var(--header-text-scrolled);
}

.site-header.scrolled .nav-link:hover {
    color: var(--primary-color);
    background: rgba(65, 182, 230, 0.08);
}

/* ===== Dropdown Menu ===== */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.12);
    padding: 12px 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    list-style: none;
    margin: 0;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 24px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(65, 182, 230, 0.08);
    color: var(--primary-color);
}

/* ===== Header Actions ===== */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
}

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

.site-header.scrolled .header-btn-text {
    color: var(--header-text-scrolled);
}

.header-btn-text:hover {
    opacity: 0.8;
}

.header-btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.header-btn-primary:hover {
    background: #2a9fd6;
    transform: translateY(-1px);
}

/* ===== Mobile Menu Button ===== */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 10;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--header-text);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-btn span:nth-child(1) {
    transform: translateY(-6px);
}

.mobile-menu-btn span:nth-child(3) {
    transform: translateY(6px);
}

.site-header.scrolled .mobile-menu-btn span {
    background: var(--header-text-scrolled);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(0) rotate(45deg);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-2px) rotate(-45deg);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding-top: var(--header-height-mobile);
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-inner {
    height: 100%;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.mobile-nav {
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
}

.mobile-nav-item {
    border-bottom: 1px solid #eee;
}

.mobile-nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.mobile-nav-link.has-sub::after {
    content: '+';
    font-size: 20px;
    font-weight: 400;
    color: #999;
    transition: var(--transition);
}

.mobile-nav-item.open .mobile-nav-link.has-sub::after {
    transform: rotate(45deg);
    color: var(--primary-color);
}

.mobile-sub-menu {
    list-style: none;
    margin: 0;
    padding: 0 0 12px 16px;
    display: none;
}

.mobile-nav-item.open .mobile-sub-menu {
    display: block;
}

.mobile-sub-menu a {
    display: block;
    padding: 12px 0;
    color: #666;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.mobile-sub-menu a:hover {
    color: var(--primary-color);
}

.mobile-menu-footer {
    padding-top: 20px;
    border-top: 1px solid #eee;
    display: flex;
    gap: 12px;
}

.mobile-auth-btn {
    flex: 1;
    padding: 14px;
    text-align: center;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    background: #f5f5f5;
    color: #333;
    transition: var(--transition);
}

.mobile-auth-btn:hover {
    background: var(--primary-color);
    color: #fff;
}

/* ===== Body Menu Open State ===== */
body.menu-open {
    overflow: hidden;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .header-inner {
        padding: 0 20px;
        height: var(--header-height-mobile);
    }
    
    .header-nav,
    .header-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header-logo img {
        height: 28px;
    }
}

@media (max-width: 480px) {
    .header-inner {
        padding: 0 16px;
    }
}

/* ===== Hide Old Header Elements ===== */
.header:not(.site-header),
header#header:not(.site-header) {
    display: none !important;
}

/* ===== Override Old Header Hover Styles ===== */
header#header:hover,
header#header.site-header:hover {
    background: transparent !important;
    box-shadow: none !important;
}

header#header.scrolled:hover,
header#header.site-header.scrolled:hover {
    background: #fff !important;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08) !important;
}

/* 최상단에서 hover 시 텍스트 색상 유지 (흰색) */
.site-header:not(.scrolled) .nav-link,
.site-header:not(.scrolled) .header-btn-text {
    color: #fff !important;
}

.site-header:not(.scrolled) .nav-link:hover {
    color: #fff !important;
    background: rgba(255,255,255,0.15) !important;
}

/* 스크롤 후 hover 시 텍스트 색상 */
.site-header.scrolled .nav-link {
    color: #333 !important;
}

.site-header.scrolled .nav-link:hover {
    color: var(--primary-color) !important;
    background: rgba(65, 182, 230, 0.08) !important;
}

.site-header.scrolled .header-btn-text {
    color: #333 !important;
}

/* ===== Page Content Spacing ===== */
body {
    padding-top: 0;
}

/* Service pages already have their own hero section padding */
.service-page {
    padding-top: 0;
}

/* For pages without service-hero, add top padding */
body:not(:has(.service-hero)):not(:has(.main)) {
    padding-top: var(--header-height);
}

@media (max-width: 1024px) {
    body:not(:has(.service-hero)):not(:has(.main)) {
        padding-top: var(--header-height-mobile);
    }
}