/* =========================
   Header
========================= */

*,
*::before,
*::after {
    box-sizing: border-box;
}

.site-header {
    position: relative;
    width: 100%;
    background: #ffffff;
    border-bottom: 1px solid #e8e8e8;
    z-index: 1000;
}

.header-inner {
    max-width: 1280px;
    min-height: 76px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

/* =========================
   Logo
========================= */

.logo {
    flex-shrink: 0;
}

.logo a {
    display: block;
    color: #111111;
    font-size: 25px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    text-decoration: none;
}

.logo img {
    display: block;
    width: auto;
    max-width: 220px;
    max-height: 48px;
}

/* =========================
   Desktop Navigation
========================= */

.main-nav {
    margin-left: auto;
}

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

.main-nav .menu > li {
    position: relative;
    margin: 0;
    padding: 0;
}

.main-nav .menu > li > a {
    display: flex;
    align-items: center;
    min-height: 76px;
    padding: 0 17px;
    color: #222222;
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
    text-decoration: none;
    transition:
        color 0.2s ease,
        background-color 0.2s ease;
}

.main-nav .menu > li > a:hover,
.main-nav .menu > li.current-menu-item > a,
.main-nav .menu > li.current-menu-parent > a,
.main-nav .menu > li.current-menu-ancestor > a {
    color: #0b57d0;
}

/* =========================
   Dropdown
========================= */

.main-nav .sub-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    min-width: 190px;
    margin: 0;
    padding: 8px 0;
    list-style: none;
    background: #ffffff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 10px);
    transition:
        opacity 0.2s ease,
        visibility 0.2s ease,
        transform 0.2s ease;
    z-index: 1001;
}

.main-nav .menu > li:hover > .sub-menu,
.main-nav .menu > li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.main-nav .sub-menu li {
    margin: 0;
}

.main-nav .sub-menu a {
    display: block;
    padding: 12px 18px;
    color: #333333;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    text-decoration: none;
}

.main-nav .sub-menu a:hover {
    color: #0b57d0;
    background: #f7f8fa;
}

/* =========================
   Hamburger
========================= */

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 9px;
    background: transparent;
    border: 0;
    border-radius: 4px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    margin: 5px auto;
    background: #111111;
    transition:
        transform 0.25s ease,
        opacity 0.25s ease;
}

/* 햄버거 X 모양 */

.nav-toggle.is-active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =========================
   Mobile
========================= */

@media (max-width: 900px) {

    .header-inner {
        min-height: 64px;
        padding: 0 18px;
    }

    .logo a {
        font-size: 21px;
    }

    .logo img {
        max-width: 180px;
        max-height: 42px;
    }

    .nav-toggle {
        display: block;
        margin-left: auto;
        flex-shrink: 0;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        max-height: 0;
        margin: 0;
        overflow: hidden;
        background: #ffffff;
        border-bottom: 1px solid transparent;
        opacity: 0;
        visibility: hidden;
        transition:
            max-height 0.35s ease,
            opacity 0.25s ease,
            visibility 0.25s ease;
    }

    .main-nav.is-open {
        max-height: calc(100vh - 64px);
        overflow-y: auto;
        border-bottom-color: #e5e5e5;
        opacity: 1;
        visibility: visible;
    }

    .main-nav .menu {
        display: block;
        width: 100%;
        padding: 8px 18px 20px;
    }

    .main-nav .menu > li {
        width: 100%;
        border-bottom: 1px solid #eeeeee;
    }

    .main-nav .menu > li > a {
        min-height: auto;
        padding: 17px 4px;
        font-size: 16px;
    }

    /* 모바일 2차 메뉴 */

    .main-nav .sub-menu {
        position: static;
        min-width: 0;
        margin: 0 0 10px;
        padding: 4px 0 8px 14px;
        background: #f7f8fa;
        border: 0;
        border-radius: 3px;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .main-nav .sub-menu a {
        padding: 10px 12px;
        font-size: 14px;
    }

    body.nav-open {
        overflow: hidden;
    }
}

@media (max-width: 480px) {

    .header-inner {
        padding: 0 14px;
    }

    .logo a {
        font-size: 19px;
    }

    .logo img {
        max-width: 150px;
    }
}