/* Shared Styles for Navigation and Footer Components */

/* CSS Variables */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --accent: #2c5aa0;
    --border: #e2e8f0;
    --border-hover: #cbd5e0;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Top Navigation */
.nav-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}



.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    border-radius: 6px;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: var(--accent);
    background: rgba(44, 90, 160, 0.05);
}

.nav-link i {
    font-size: 0.75rem;
    transition: transform 0.2s;
}

.nav-item:hover > .nav-link i {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    margin-top: 0.5rem;
    padding: 0.5rem;
}

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

.dropdown-item {
    display: block;
    padding: 0.65rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.dropdown-item i {
    font-size: 0.75rem;
    margin-left: 0.25rem;
}

.dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 0.5rem 0;
}

.dropdown-category {
    padding: 0.5rem 1rem 0.25rem;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle i {
    font-size: 1.5rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover i {
    color: var(--accent);
    transform: scale(1.1);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none; /* 클릭 이벤트 차단 방지 */
}

.mobile-menu-overlay.active {
    display: block; /* active일 때만 display: block */
    opacity: 1;
    pointer-events: auto; /* active일 때만 클릭 가능 */
}

/* Main Content */
.main-content {
    margin-top: 70px;
    min-height: 100vh;
}

/* Product/Page Headers - ensure proper spacing below nav */
.main-content > .product-header,
.main-content > header.product-header,
.main-content > header.page-header {
    margin-top: 0;
}

/* Ensure product content doesn't hide behind fixed nav */
.product-header,
.page-header {
    position: relative;
}

/* Footer */
footer {
    padding: 4rem 3rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    /* 모바일에서 네비게이션 높이 유지 */
    .nav-wrapper {
        height: 70px;
        min-height: 70px;
    }

    .nav-container {
        height: 70px;
        min-height: 70px;
        padding: 0 1.5rem;
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
        padding: 0.75rem;
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-menu-toggle i {
        font-size: 1.5rem;
    }

    .nav-menu.mobile-open {
        display: flex !important;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        height: auto !important;
        min-height: calc(100vh - 70px) !important;
        background: white;
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        overflow-y: auto;
        z-index: 1000;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        justify-content: space-between;
        padding: 1rem 1.25rem;
        min-height: 48px; /* 터치 영역 확보 */
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        margin: 0;
        padding: 0 0 0 1rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-item.mobile-open .dropdown-menu {
        max-height: 800px; /* 더 많은 메뉴 항목을 위해 증가 */
    }

    .dropdown-item {
        padding: 0.85rem 1rem;
        min-height: 44px; /* 터치 영역 확보 */
    }

    .mobile-menu-overlay {
        display: block;
    }

    /* 모바일에서 main-content 상단 여백 확보 */
    .main-content {
        margin-top: 70px;
        padding-top: 0;
    }

    footer {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* 작은 모바일 화면 추가 최적화 */
@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.1rem;
    }

    .mobile-menu-toggle {
        padding: 0.5rem;
    }
}