.site-header {
    position: sticky;
    top: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background-color: var(--bg-color);
    border-bottom: 0 solid var(--public-accent-color);
    font-size: 1.2rem;
    color: var(--secondary-text-color);

    overflow: visible;
}

.header-left {
    min-width: 0;
}

.site-brand {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--secondary-text-color);
}

.site-brand-logo {
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    display: block;
    background-color: currentColor;
    mask: url("../resources/archipe_lab_logo_sq.png") center / contain no-repeat;
    -webkit-mask: url("../resources/archipe_lab_logo_sq.png") center / contain no-repeat;
}

.site-brand-name {
    min-width: 0;
    font-family: Montserrat, var(--font), sans-serif;
    font-size: 1.05rem;
    font-weight: 900;
    letter-spacing: 0;
    white-space: nowrap;
}

/* PCナビ */
.header-nav {
    display: flex;
    align-items: center;
    gap: 20px
}

.header-nav a {
    text-decoration: none;
    color: var(--secondary-text-color);
    position: relative;
}

.header-nav a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 0.05rem;
    background: var(--secondary-text-color);
    transition: width var(--transition);
}

.header-nav a:hover::after {
    width: 100%
}

.header-nav a.account-icon-link::after {
    display: none;
}

.account-icon {
    display: block;
    width: 32px;
    height: 32px;
    border-radius: 32px;
}

/* ハンバーガー */
.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 0;
    background: transparent;
    padding: 8px;
    cursor: pointer
}

.nav-toggle .bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--secondary-text-color);
    margin: 4px 0;
    transition: var(--transition)
}

/* オーバーレイ */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .45);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 999;
}

body.nav-open main {

    filter: blur(6px);

}

body.nav-open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
}


/* 背景スクロール固定 */
body.nav-open {
    overflow: hidden
}

/* ディスコードログイン */
.discord-login-btn {
    border: 0 solid #fff;
    background-color: #5865F2;
    color: #fff;
    position: relative;
    padding: 10px 10px 10px 33px;
}

.discord-login-btn::before {
    content: '';
    display: block;
    width: 1.2rem;
    height: 1.2rem;
    background-image: url(./../resources/Discord-Symbol-White.svg);
    background-size: contain;
    background-repeat: no-repeat;
    position: absolute;
    top: 13px;
    left: 10px;
}

/* ルームヘッダがある画面では、サイトヘッダは通常スクロールさせる */
body:has(.room-header) .site-header {
    position: relative;
    top: auto;
    z-index: 1;
}