/* =========================
   Header & Navigation
========================= */
.header-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: #1a1a1a;
    border-bottom: 1px solid #333;
    padding: 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    height: 56px;
}

/* 햄버거 메뉴 버튼 (모바일 전용) */
.hamburger-menu {
    display: none;
    background: transparent !important;
    border: none !important;
    color: rgba(255, 255, 255, 0.8);
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    margin: 0;
    margin-left: auto;
    transition: none;
    -webkit-tap-highlight-color: transparent;
    outline: none !important;
    box-shadow: none !important;
    width: auto;
    height: auto;
    min-width: 0;
    min-height: 0;
    flex-shrink: 0;
    position: relative;
    transform: none;
}

.hamburger-menu:focus,
.hamburger-menu:active {
    outline: none !important;
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
    transform: none;
    color: rgba(255, 255, 255, 0.8);
}

.hamburger-menu:hover {
    background: transparent !important;
    border: none !important;
    transform: none;
    color: #fff;
}

/* 모바일 헤더 제목 (PC에서 숨김) */
.header-title {
    display: none;
    color: #e0fd53;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-decoration: none;
}

.nav-tabs {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 0;
}

.nav-item {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.2s;
    white-space: nowrap;
    padding: 0 14px;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-tabs > a.nav-item:first-child {
    font-weight: 800;
    font-size: 16px;
    color: #e0fd53;
    margin-right: 8px;
    letter-spacing: -0.5px;
    text-transform: none;
}

.nav-item.active {
    color: #e0fd53;
    font-weight: 600;
}

/* PC 메가 메뉴 */
.nav-mega-wrapper {
    display: flex;
    align-items: center;
    height: 56px;
    position: static;
}

.nav-trigger {
    cursor: pointer;
    user-select: none;
    color: rgba(255, 255, 255, 0.45);
}

a.nav-trigger:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

a.nav-trigger.active {
    color: #e0fd53 !important;
}

.mega-menu {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #1e1e24;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: center;
    gap: 48px;
    padding: 24px 32px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.18s, visibility 0.18s, transform 0.18s;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
    z-index: 1001;
    /* nav-item 스타일 상속 차단 */
    height: auto;
    text-transform: none;
    letter-spacing: normal;
    font-size: initial;
}

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

.mega-col {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 100px;
}

.mega-col-title {
    font-size: 11px !important;
    font-weight: 700 !important;
    color: rgba(255, 255, 255, 0.35) !important;
    text-transform: uppercase !important;
    letter-spacing: 1.5px !important;
    padding: 0 12px 8px !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    margin-bottom: 4px;
    height: auto !important;
}

.mega-menu a.mega-item {
    display: block;
    padding: 8px 12px;
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.15s;
    white-space: nowrap;
    height: auto;
    text-transform: none;
    letter-spacing: normal;
    justify-content: flex-start;
}

.mega-menu a.mega-item:hover {
    color: #e0fd53;
    background: rgba(224, 253, 83, 0.08);
    padding-left: 16px;
}

.mega-menu a.mega-item.active {
    color: #e0fd53;
    font-weight: 600;
}

.mega-menu a.mega-item.mega-highlight {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mega-highlight-badge {
    font-size: 9px;
    font-weight: 700;
    color: #1a1a1a;
    background: #e0fd53;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

/* =========================
   사이드바 네비게이션 (모바일)
========================= */
.sidebar-nav {
    position: fixed;
    top: 48px;
    left: 0;
    width: 100%;
    height: calc(100vh - 48px);
    height: calc(100dvh - 48px);
    background: #1a1a1a;
    z-index: 999;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sidebar-nav.open {
    opacity: 1;
    visibility: visible;
}

.sidebar-overlay {
    display: none;
}

.sidebar-header {
    display: none;
}

.sidebar-title {
    display: none;
}

.sidebar-close {
    display: none;
}

.sidebar-content {
    padding: 0;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.sidebar-content::-webkit-scrollbar {
    display: none;
}

.sidebar-content {
    scrollbar-width: none;
}

.nav-group {
    margin-bottom: 0;
}

.nav-group-title {
    font-size: 11px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 12px 32px 8px;
    margin: 0;
}

.sidebar-nav-item {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    padding: 10px 32px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.2s ease;
    border-left: none;
    letter-spacing: -0.3px;
}

.sidebar-nav-item:hover {
    color: #e0fd53;
    background: transparent;
}

.sidebar-nav-item.active {
    color: #e0fd53;
    background: transparent;
    border-left: none;
    font-weight: 700;
}

.sidebar-highlight-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: #1a1a1a;
    background: #e0fd53;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    margin-left: 4px;
    vertical-align: 4px;
    letter-spacing: 0;
    text-transform: uppercase;
}

.sidebar-secondary {
    margin-top: auto;
    padding: 16px 32px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-secondary ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-secondary li {
    display: flex;
    align-items: center;
}

.sidebar-sep {
    color: rgba(255, 255, 255, 0.15);
    font-size: 12px;
    user-select: none;
}

.sidebar-secondary a {
    color: rgba(255, 255, 255, 0.2);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.2s;
}

.sidebar-secondary a:hover {
    color: rgba(255, 255, 255, 0.4);
    background: none;
    padding: 0;
}

/* =========================
   Navigation Responsive
========================= */
@media (min-width: 768px) and (max-width: 1199px) {
    .header-content {
        padding: 0 16px;
        height: 56px;
    }

    .nav-item {
        height: 56px;
        font-size: 12px;
        padding: 0 10px;
    }
}

@media (max-width: 768px) {
    .hamburger-menu {
        display: block;
    }

    .nav-tabs {
        display: none;
    }

    .header-title {
        display: block;
    }

    .header-content {
        justify-content: flex-start;
        padding: 0 16px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 12px;
        height: 48px;
    }

    .hamburger-menu {
        font-size: 22px;
        padding: 8px;
    }
}