/* ========================================
   Navigation
======================================== */
.hamburger_menu {
    display: block;
    position: absolute;
    top: 2.73vw;
    right: 2.42vw;
    width: 5vw;
    height: 2.34vw;
    cursor: pointer;
    background: none;
    background-color: transparent;
    border: none;
    outline: none;
    z-index: 1001;
    padding: 0;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* スクロール後に表示 */
.hamburger_menu.show {
    opacity: 1;
    visibility: visible;
}

/* メニューが開いている時は常に表示 */
.hamburger_menu.active {
    opacity: 1;
    visibility: visible;
}

.hamburger_menu span {
    position: absolute;
    background-color: #fff;
    height: 0.16vw;
    width: 5vw;
    transition: all 0.4s ease-in-out;
    border-radius: 0.08vw;
    left: 0;
    display: block;
}

.hamburger_menu span:nth-of-type(1) {
    top: 0.7vw;
}

.hamburger_menu span:nth-of-type(2) {
    bottom: 0.7vw;
}

.hamburger_menu.active span:nth-of-type(1) {
    top: 1.09vw;
    transform: rotate(45deg);
}

.hamburger_menu.active span:nth-of-type(2) {
    bottom: 1.09vw;
    transform: rotate(-45deg);
}

/* メニュー内のロゴ（バツボタンの反対側） */
.nav-logo {
    position: absolute;
    top: 1vw;      /* バツボタンと同じ高さ */
    left: 2.42vw;     /* 左側 */
    z-index: 1002;    /* バツボタンより手前 */
}

.nav-logo a {
    display: block;
    text-decoration: none;
}

.nav-logo img {
    height: 6vw;   /* バツボタンの高さと同じ */
    width: auto;
    display: block;
    transition: opacity 0.3s ease;
}

.nav-logo a:hover img {
    opacity: 0.8;
}

/* スマホ対応 */
@media (max-width: 767px) {
    .nav-logo {
        top: 4.27vw;   /* バツボタンと同じ高さ */
        left: 4.27vw;  /* 左側 */
    }
    
    .nav-logo img {
        height: 8vw;   /* 調整可能 */
    }
}

/* Contactページ用（初期色：黒） */
.hamburger_menu--dark span {
    background-color: #333;
}

.backcolor {
    background-color: rgba(0, 0, 0, 0.8);
}

/* ナビゲーションメニュー */
.nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64.219vw;
    background: #2C2C2C;
    z-index: 1000;

    display: flex;
    align-items: center;
    justify-content: center;

    transform: translateY(-100%);
    visibility: hidden;

    transition:
      transform 0.4s ease,
      visibility 0s linear 0.4s;
}

.nav-menu.active {
    transform: translateY(0);
    visibility: visible;


    transition:
      transform 0.4s ease,
      visibility 0s;
}


/* ナビリスト */
.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 2.34vw;
}

.nav-link {
    color: #fff;
    font-size: 3.13vw;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-weight: 400;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.nav-link:hover {
    opacity: 0.7;
}

/* オーバーレイ */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.hamburger_menu.active {
	position: fixed;
}

/* レスポンシブ対応 */
@media (max-width: 767px) {
	    .hamburger_menu {
        top: 4.27vw;
        right: 4.27vw;
        width: 8vw;
        height: 6.5vw;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .hamburger_menu.show {
        opacity: 1;
        visibility: visible;
    }

    .hamburger_menu.active {
        opacity: 1;
        visibility: visible;
		position: fixed;
		top: 8vw;
    }
	
    .hamburger_menu span {
        width: 8vw;
        height: 0.53vw;
    }

    .hamburger_menu span:nth-of-type(1) {
        top: 2.13vw;
    }

    .hamburger_menu span:nth-of-type(2) {
        bottom: 2.13vw;
    }

    .hamburger_menu.active span:nth-of-type(1) {
        top: 50%;
        transform: translateY(-50%) rotate(45deg);
    }

    .hamburger_menu.active span:nth-of-type(2) {
        bottom: 50%;
        transform: translateY(50%) rotate(-45deg);
    }

    .nav-menu {
        height: 180.533vw;
		overflow: hidden;
    }

    .nav-list {
        gap: 8vw;
    }

    .nav-link {
        font-size: 7.47vw;
    }
}