:root {
    --sidebar-width: 260px;
    --top-bar-height: 3rem;
}

body {
    margin: 0;
}

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    height: var(--top-bar-height);
    padding: 0 0.5rem 0 0.35rem;
    box-sizing: border-box;
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
}

.top-bar-brand {
    font-weight: 700;
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
    overflow: hidden;
}

.top-bar-spacer {
    flex: 1;
    min-width: 0;
}

.top-bar-link {
    font-size: 0.9rem;
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
}

.top-bar-link:hover {
    opacity: 0.75;
}

.layout {
    display: flex;
    min-height: 100vh;
    align-items: stretch;
    padding-top: var(--top-bar-height);
    box-sizing: border-box;
}

.layout-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.layout-simple .layout-main {
    width: 100%;
}

.menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    text-decoration: none;
    color: inherit;
    background: none;
    border: none;
    font: inherit;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 0.4rem;
    flex-shrink: 0;
}

.menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.header-back {
    font-size: 1.35rem;
}

.search-shell {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
    max-width: min(22rem, 55vw);
}

.search-toggle,
.search-back,
.search-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    text-decoration: none;
    color: inherit;
    background: none;
    border: none;
    font: inherit;
    font-size: 1.35rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 0.4rem;
    flex-shrink: 0;
}

.search-back {
    display: none;
    font-size: 1.5rem;
}

.search-submit {
    display: none;
}

.search-toggle:hover,
.search-back:hover,
.search-submit:hover {
    background: rgba(0, 0, 0, 0.05);
}

.search-bar {
    display: none;
    width: min(18rem, 50vw);
    min-width: 0;
    align-items: center;
    gap: 0.35rem;
}

body.search-open .search-bar {
    display: block;
}

body.search-open .search-shell {
    flex: 1;
    max-width: none;
}

.search-input {
    width: 100%;
    box-sizing: border-box;
    font: inherit;
    font-size: 0.95rem;
    padding: 0.4rem 0.6rem;
    border: 1px solid #ddd;
    border-radius: 0.4rem;
    background: #fff;
    color: inherit;
}

.search-input:focus {
    outline: none;
    border-color: #999;
}

.search-input::-webkit-search-cancel-button {
    cursor: pointer;
}

@media screen and (max-width: 767px) {
    .layout {
        display: block;
    }

    body.search-open .top-bar-brand,
    body.search-open .top-bar-spacer,
    body.search-open .menu-toggle {
        display: none;
    }

    body.search-open .search-bar {
        display: flex;
        flex: 1;
        width: auto;
    }

    body.search-open .search-input {
        flex: 1;
        min-width: 0;
    }

    body.search-open .search-toggle {
        display: none;
    }

    body.search-open .search-back,
    body.search-open .search-submit {
        display: inline-flex;
    }
}

@media screen and (min-width: 768px) {
    body.search-open .search-bar {
        display: block;
    }
}