/* Shared top header styling for portal and admin. Theme colors are controlled
   through CSS variables set on the page-specific topbar class. */
:root {
    --surface-nav-border: #d8e0ea;
    --surface-nav-hover-border: #3f63a8;
    --surface-nav-active-border: #185fa5;
}

.portal-topbar,
.admin-topbar {
    height: 50px;
    padding: 0;
    display: block;
    background: linear-gradient(90deg, var(--header-bg-start) 0%, var(--header-bg-end) 100%);
    color: #fff;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.14) inset;
    /* オーバーレイ(z-index:50)より上に固定。アニメ中も常にヘッダー前面表示 */
    position: relative;
    z-index: 100;
    transform: translateZ(0);
    backface-visibility: hidden;
    contain: layout style paint;
}

/* ポータル側（コンテンツ幅 760px に縛られる）：中身を中央寄せして .main と縦揃え */
.portal-topbar-inner {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 30px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

/* 管理画面側（サイドバー + メインの全画面レイアウト）：中身も全幅で、左端ロゴ・右端ログアウト */
.admin-topbar-inner {
    max-width: 100%;
    padding: 0 22px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.portal-brand,
.admin-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    font-weight: 700;
}

.portal-brand .brand-mark,
.admin-brand .brand-mark {
    display: block;
    height: 24px;
    width: auto;
    max-width: min(150px, 30vw);
}

.portal-brand .brand-subtext,
.admin-brand .brand-subtext {
    color: var(--header-subtext-color);
    font-weight: 500;
    font-size: 13px;
    line-height: 1;
}

.portal-topbar .btn.secondary,
.admin-topbar .btn.secondary {
    border-color: var(--header-button-border);
    min-height: 30px;
    height: 30px;
    padding: 0 11px;
    font-size: 12px;
    line-height: 1;
    box-sizing: border-box;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.portal-topbar .btn.secondary:hover,
.admin-topbar .btn.secondary:hover {
    background: #eef2f6;
    border-color: rgba(255, 255, 255, 0.55);
    color: #27415f;
}

@media (max-width: 720px) {
    .portal-topbar-inner,
    .admin-topbar-inner {
        padding: 0 14px;
        gap: 12px;
    }

    .portal-brand .brand-mark,
    .admin-brand .brand-mark {
        height: 22px;
        max-width: min(132px, 38vw);
    }

    .portal-brand .brand-subtext,
    .admin-brand .brand-subtext {
        font-size: 12px;
    }
}

@media (max-width: 520px) {
    .portal-topbar-inner,
    .admin-topbar-inner {
        gap: 10px;
    }

    .portal-brand .brand-mark,
    .admin-brand .brand-mark {
        max-width: min(118px, 40vw);
    }
}