/* ----- ヘッダー ------------------------------------------------*/

#header {
    position: fixed;
    top: 0;
    height: 100px;
    transition: all 1s ease;
    width: 100%;
    background-color: var(--color-white);
    z-index: 9999;
    padding: var(--spacing-sm) 0;
}

body.home #header {
    background: linear-gradient(0deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.5) 40%, rgba(255, 255, 255, 0.8) 60%, rgba(255, 255, 255, 1) 100%);
}

#header.header-shadow {
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16);
}

#header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
}

#header .logo-wrapper {
    width: clamp(200px, 10.224rem + 11.38vw, 280px);
}

#header .nav-wrapper {
    display: none;
}

@media screen and (max-width: 1023px) {
    #hamburger-menu {
        position: relative;
        z-index: 2000;
        width: 45px;
        height: 45px;
        background-color: var(--color-primary);
        border-radius: var(--border-radius-full);
        cursor: pointer;
        transition: all 0.23s;
    }

    .hamburger-line {
        display: block;
        width: 20px;
        height: 2px;
        position: absolute;
        background: var(--color-white);
        left: 0;
        right: 0;
        margin: auto;
        transition: all 0.23s cubic-bezier(0.5, 0.1, 0.3, 1.8);
        border-radius: var(--border-radius-sm);
    }

    .hamburger-line:nth-child(1) {
        top: calc(50% - 5.5px);
    }

    .hamburger-line:nth-child(2) {
        top: 50%;
        width: 15px;
    }

    .hamburger-line:nth-child(3) {
        top: calc(50% + 4.5px);
        width: 9px;
    }

    #hamburger-menu.is-active .hamburger-line:nth-child(1) {
        transform: rotate(45deg);
        width: 21px;
        top: calc(50% - 1.5px);
    }

    #hamburger-menu.is-active .hamburger-line:nth-child(2) {
        left: 5px;
        opacity: 0;
    }

    #hamburger-menu.is-active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg);
        width: 20px;
        top: calc(50% - 1.5px);
    }

    #drawer-menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100svh;
        background-color: var(--color-white);
        z-index: 1000;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        padding: 80px var(--spacing-lg) var(--spacing-lg);
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
    }

    #drawer-menu.open {
        transform: translateX(0);
    }

    #header .drawer-menu-wrapper {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-xl);
        margin-bottom: var(--spacing-lg);
    }

    #header .drawer-menu-item {
        border-bottom: 1px solid var(--color-secondary);
        padding-bottom: var(--spacing-lg);
    }

    #header .drawer-menu-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    #header .drawer-menu-item h3 {
        font-size: var(--font-size-lg);
        font-weight: var(--font-weight-bold);
        color: var(--color-primary);
        margin-bottom: var(--spacing-md);
        font-family: var(--font-family-gothic);
    }

    #header .drawer-menu-item h3 {
        font-size: var(--font-size-md);
        color: var(--color-primary);
    }

    #header .drawer-menu-item a {
        display: inline-block;
    }

    #header .drawer-menu-item a:hover {
        color: var(--color-accent);
    }

    #header .drawer-menu-item .nav-menu {
        display: flex;
        flex-direction: column;
        row-gap: var(--spacing-sm);
        font-size: var(--font-size-sm);
        padding-left: var(--spacing-xs);
    }
}

@media screen and (min-width: 1024px) {

    #header {
        height: 100px;
    }

    #header .logo-wrapper {
        width: 300px;
    }

    #header .nav-wrapper {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        gap: var(--spacing-md);
        width: 80%;
        font-size: var(--font-size-md-px);
        font-weight: var(--font-weight-bold);
        color: var(--color-primary);
    }

    #header .nav-item.dropdown {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #header .dropdown-menu {
        position: absolute;
        top: calc(100% + 10px);
        left: 50%;
        transform: translateX(-50%) translateY(-10px);
        border: 1.5px solid var(--color-primary);
        border-left: 5px solid var(--color-primary);
        background-color: var(--color-white);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        border-radius: var(--border-radius-md);
        min-width: 200px;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }

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

    #header .dropdown-menu a {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
        color: var(--color-primary);
        font-size: var(--font-size-sm-px);
        background: url(../images/common/dot.svg) repeat-x left bottom;
        background-size: 10px 1px;
        transition: all 0.2s ease;
        position: relative;
        z-index: 10;
    }

    #header .dropdown-menu a:last-child {
        background: none;
    }

    #header .dropdown:hover>a {
        color: var(--color-accent);
    }

    #header .dropdown-menu a:hover {
        color: var(--color-white);
    }

    #header .dropdown-menu a::after {
        content: "";
        display: block;
        width: 100%;
        height: calc(100% + 2px);
        position: absolute;
        left: -100%;
        top: -2px;
        z-index: -1;
        transition: 0.4s ease-in-out;
        background: var(--color-primary);
    }

    #header .dropdown-menu a:hover::after {
        left: 0;
    }

    #hamburger-menu {
        display: none;
    }

    #drawer-menu {
        display: none;
    }
}

#header .icon-external-link {
    width: var(--font-size-md);
    height: var(--font-size-md);
    margin-left: 4px;
    vertical-align: middle;
    opacity: 0.7;
    transition: opacity 0.3s ease;
    filter: brightness(0) saturate(100%) invert(27%) sepia(51%) saturate(2878%) hue-rotate(86deg) brightness(95%) contrast(97%); /* SVGをvar(--color-primary)に変更 */
}