/* INFERA - Mega Menu Styles */

.main-nav { display: flex; align-items: center; height: 100%; }
.nav-list { display: flex; align-items: center; height: 100%; gap: 0; list-style: none; margin: 0; padding: 0; }
.main-nav > .nav-item,
.nav-list > .nav-item,
.nav-list > li.nav-item { position: relative; height: 100%; display: flex; align-items: center; }
.nav-item { position: relative; display: flex; align-items: center; }
.nav-link { display: flex; align-items: center; gap: 4px; padding: 28px 16px; font-size: 15px; font-weight: 500; color: var(--gray, #666); transition: color 0.2s; white-space: nowrap; text-decoration: none; }
.nav-link:hover, .nav-link.active { color: var(--main, #0055ff); }

/* 투명 헤더일 때 메뉴 흰색 */
#header.transparent .nav-link { color: rgba(255, 255, 255, 0.9); }
#header.transparent .nav-link:hover { color: #fff; }
#header.transparent .btn-primary { background: rgba(255, 255, 255, 0.15); border-color: rgba(255, 255, 255, 0.3); color: #fff; }
#header.transparent .btn-primary:hover { background: rgba(255, 255, 255, 0.25); }
.nav-link .arrow { display: inline-block; width: 0; height: 0; margin-left: 4px; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; transition: transform 0.2s; }
.nav-item:hover .nav-link .arrow { transform: rotate(180deg); }

.mega-dropdown { position: fixed; top: var(--header-height); left: 0; right: 0; width: 100vw; background: var(--white); box-shadow: 0 10px 40px rgba(0,0,0,0.1); border-top: 1px solid rgba(0,0,0,0.06); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all 0.3s; z-index: 999; max-height: calc(100vh - var(--header-height)); overflow-y: auto; }
.nav-item:hover .mega-dropdown, .nav-item.active .mega-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }

.mega-content { max-width: 1400px; margin: 0 auto; padding: 48px 24px; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; }
.mega-content.cols-2 { grid-template-columns: repeat(2, 1fr); max-width: 600px; }
.mega-content.cols-3 { grid-template-columns: repeat(3, 1fr); max-width: 800px; }
.mega-content.cols-4 { grid-template-columns: repeat(4, 1fr); max-width: 1000px; }

.sub-menu-group { padding: 0 16px; }
.sub-menu-title { font-size: 15px; font-weight: 600; color: var(--black); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--main); display: block; }
.sub-menu-title a { color: inherit; transition: color 0.2s; }
.sub-menu-title a:hover { color: var(--main); }
.sub-menu-list { display: flex; flex-direction: column; gap: 8px; }
.sub-menu-item { display: block; }
.sub-menu-item a { display: block; padding: 8px 0 8px 12px; font-size: 14px; color: var(--gray); transition: all 0.2s; position: relative; }
.sub-menu-item a::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 4px; background: var(--light); border-radius: 50%; transition: all 0.2s; }
.sub-menu-item a:hover { color: var(--main); padding-left: 16px; }
.sub-menu-item a:hover::before { background: var(--main); width: 6px; height: 6px; }

.mobile-menu-btn { display: none; flex-direction: column; justify-content: center; align-items: center; width: 40px; height: 40px; padding: 8px; cursor: pointer; z-index: 1001; }
.mobile-menu-btn span { display: block; width: 24px; height: 2px; background: var(--black); border-radius: 1px; transition: all 0.2s; }
.mobile-menu-btn span:nth-child(1) { margin-bottom: 6px; }
.mobile-menu-btn span:nth-child(2) { margin-bottom: 6px; }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; transform: translateX(-10px); }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }
#header.transparent .mobile-menu-btn span { background: var(--white); }
#header.scrolled .mobile-menu-btn span { background: var(--black); }

.mobile-menu-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; visibility: hidden; transition: all 0.3s; }
.mobile-menu-overlay.active { opacity: 1; visibility: visible; }

.mobile-menu { display: none; position: fixed; top: 0; right: -100%; width: 100%; max-width: 400px; height: 100vh; background: var(--white); z-index: 999; overflow-y: auto; transition: right 0.3s; padding-top: var(--header-height); }
.mobile-menu.active { right: 0; }
.mobile-menu-inner { padding: 24px; }

.mobile-nav-list { display: flex; flex-direction: column; }
.mobile-nav-item { border-bottom: 1px solid rgba(0,0,0,0.06); }
.mobile-nav-link { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; font-size: 16px; font-weight: 500; color: var(--black); transition: color 0.2s; }
.mobile-nav-link:hover { color: var(--main); }
.mobile-nav-link .arrow { width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; transition: transform 0.2s; }
.mobile-nav-link .arrow::after { content: ""; width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); }
.mobile-nav-item.active .mobile-nav-link .arrow { transform: rotate(180deg); }

.mobile-sub-menu { display: none; padding: 0 0 16px 16px; background: var(--bg); margin: 0 -24px; padding-left: 40px; padding-right: 24px; }
.mobile-nav-item.active .mobile-sub-menu { display: block; }
.mobile-sub-menu-item a { display: block; padding: 12px 0; font-size: 14px; color: var(--gray); border-bottom: 1px solid rgba(0,0,0,0.04); transition: color 0.2s; }
.mobile-sub-menu-item:last-child a { border-bottom: none; }
.mobile-sub-menu-item a:hover { color: var(--main); }

.mobile-menu-footer { margin-top: 32px; padding-top: 24px; border-top: 1px solid rgba(0,0,0,0.1); }
.mobile-contact-info { margin-bottom: 24px; }
.mobile-contact-info p { font-size: 14px; color: var(--gray); margin-bottom: 8px; }
.mobile-contact-info strong { color: var(--black); font-weight: 500; }
.mobile-menu-footer .btn { width: 100%; justify-content: center; }

.header-actions { display: flex; align-items: center; gap: 16px; }
.header-actions .btn { padding: 10px 20px; font-size: 14px; }

@media (max-width: 1400px) { .mega-content { padding: 40px 24px; gap: 24px; } .nav-link { padding: 28px 12px; font-size: 14px; } }
@media (max-width: 1200px) { .nav-link { padding: 28px 10px; font-size: 13px; } }
@media (max-width: 1024px) { .main-nav { display: none; } .header-actions .btn { display: none; } .mobile-menu-btn { display: flex; } .mobile-menu, .mobile-menu-overlay { display: block; } }
@media (max-width: 768px) {
    .mobile-menu { max-width: 100%; }
    .mobile-nav-link { font-size: 16px; padding: 18px 0; }
    .mobile-sub-menu-item a { font-size: 15px; padding: 14px 0; }
    .mobile-contact-info p { font-size: 15px; }
    .mobile-menu-footer .btn { padding: 16px 24px; font-size: 15px; }
}
@media (max-width: 480px) {
    .mobile-menu-inner { padding: 20px 16px; }
    .mobile-nav-link { padding: 16px 0; font-size: 15px; }
    .mobile-sub-menu { padding-left: 32px; }
    .mobile-sub-menu-item a { font-size: 14px; padding: 12px 0; }
}

.nav-item:focus-within .mega-dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-link:focus { outline: 2px solid var(--main); outline-offset: -2px; }
.sub-menu-item a:focus { outline: 2px solid var(--main); outline-offset: 2px; }

.nav-item:hover .sub-menu-item, .nav-item.active .sub-menu-item { animation: fadeInUp 0.3s ease forwards; opacity: 0; }
.nav-item:hover .sub-menu-item:nth-child(1) { animation-delay: 0.05s; }
.nav-item:hover .sub-menu-item:nth-child(2) { animation-delay: 0.1s; }
.nav-item:hover .sub-menu-item:nth-child(3) { animation-delay: 0.15s; }
.nav-item:hover .sub-menu-item:nth-child(4) { animation-delay: 0.2s; }
.nav-item:hover .sub-menu-item:nth-child(5) { animation-delay: 0.25s; }
.nav-item:hover .sub-menu-item:nth-child(6) { animation-delay: 0.3s; }
.nav-item:hover .sub-menu-item:nth-child(7) { animation-delay: 0.35s; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) { .mega-dropdown { transition: opacity 0.1s; transform: none; } .nav-item:hover .sub-menu-item { animation: none; opacity: 1; } .mobile-menu { transition: none; } }