/* 調整用スタイル */

/* ヘッダー */
.sp-header {
    background-color: white;
    width: 100%;
    height: 48px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center; /* ヘッダー全体を中央揃え */
    padding: 0 10px;
    box-sizing: border-box;
    transition: background-color 0.4s, color 0.4s;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: flex-end; /* ハンバーガーメニューを右端に配置 */
    width: 100%;
    position: relative;
}

/* ヘッダーのロゴ部分 */
.header-logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.header-logo a img {
    display: block;
    width: 120px;
    height: auto;
}

/* ハンバーガーメニュー */
.header__hamburger {
    width: 48px;
    height: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1000;
    margin-right: 10px; /* 右端に余白を追加 */
    box-sizing: border-box;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background-color: #000; /* 初期状態では黒 */
    margin: 4px 0;
    transition: all 0.4s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ヘッダーのナビ部分 */
.header__nav {
    position: fixed;
    top: 48px;
    right: 0;
    left: 0;
    height: calc(100vh - 48px);
    background-color: #fff;
    transform: translateY(-100%);
    transition: transform 0.4s ease;
    z-index: 998; /* sp-header の下に配置 */
}

.header__nav.active {
    transform: translateY(0);
}

.nav-items {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.nav-items__item {
    margin: 16px 0;
}

.nav-items__item a {
    color: black;
    text-decoration: none;
    font-size: 20px;
}

/* スクリーン幅が広い場合は非表示 */
@media screen and (min-width: 431px) {
    .sp-header {
        display: none;
    }
    .header__nav {
        display: none;
    }
}

/* ナビゲーションのスタイル */
.sp-header.default {
    background-color: #fffffc;
    color: #080505;
}
.sp-header.default a {
    color: #080505;
}
.sp-header.default::after {
    background: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
}

.sp-header.inverted {
    background-color: #080505;
    color: #fffffc;
}
.sp-header.inverted a {
    color: #fffffc;
}
.sp-header.inverted .hamburger span {
    background-color: #fff; /* inverted状態では白 */
}
.sp-header.inverted .header-logo a img {
    filter: invert(1); /* ロゴ画像を白に変更 */
}
.sp-header.inverted::after {
    background: linear-gradient(to bottom, rgba(8, 5, 5, 1), rgba(51, 51, 51, 0)); 
}