/* ── Collapse page-content padding when it contains sealed layout ── */
.page-content:has(.sealed-layout) {
    padding-top: 0;
    min-height: 0;
}

/* ── Layout ── */
.sealed-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: calc(100vh - var(--nav-height, 48px));
    margin-top: var(--nav-height, 48px);
}

/* ── Sidebar TOC ── */
.sealed-toc {
    background: var(--surface-1);
    border-right: 1px solid var(--border-subtle);
    padding: 20px 0 20px;
    position: sticky;
    top: var(--nav-height);
    height: calc(100vh - 48px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.sealed-toc::-webkit-scrollbar { width: 5px; }
.sealed-toc::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 3px; }

.sealed-toc-title {
    font-size: var(--text-md);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    padding: 0 16px 12px;
}

.sealed-toc-item {
    display: block;
    padding: 7px 16px;
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--activetext);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: all 0.12s;
}
.sealed-toc-item:hover {
    color: var(--normal);
    background: var(--surface-1);
}
.sealed-toc-item.active {
    color: var(--ainfo);
    border-left-color: var(--ainfo);
    background: var(--accent-muted);
}
.sealed-toc-item .toc-count {
    float: right;
    font-size: var(--text-base);
    color: var(--text-dim);
}

/* ── Main content ── */
.sealed-main {
    padding: 28px 36px 80px;
}
.sealed-main h1 {
    font-size: var(--text-8xl);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin: 0 0 16px;
}

/* ── Toolbar ── */
.sealed-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    position: sticky;
    top: var(--nav-height);
    z-index: 10;
    background: var(--background);
    padding: 12px 36px;
    margin-left: -36px;
    margin-right: -36px;
}
.sealed-search-form {
    flex: 1;
    min-width: 240px;
    max-width: 420px;
    position: relative;
}
.sealed-search {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-moderate);
    background: var(--surface-1);
    color: var(--normal);
    font-size: var(--text-xl);
    font-family: inherit;
    outline: none;
}
.sealed-search:focus { border-color: var(--ainfo); }
.sealed-search::placeholder { color: var(--text-dim); }

.sealed-toolbar a,
.sealed-toolbar .sealed-toolbar-btn {
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    background: var(--surface-1);
    border: 1px solid var(--border-subtle);
    color: var(--activetext);
    font-size: var(--text-xl);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
}
.sealed-toolbar a:hover,
.sealed-toolbar .sealed-toolbar-btn:hover {
    border-color: var(--border-moderate);
    color: var(--normal);
}

/* ── Sections ── */
.sealed-section {
    margin-bottom: 36px;
    scroll-margin-top: 120px;
}
.sealed-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
}
.sealed-section-header h2 {
    font-size: var(--text-5xl);
    font-weight: 600;
    margin: 0;
}
.sealed-section-header .section-count {
    font-size: var(--text-lg);
    color: var(--text-dim);
}

/* ── Edition grid ── */
.sealed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 8px;
}
.sealed-edition {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 14px;
    background: var(--surface-1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--normal);
    font-size: var(--text-xl);
    font-weight: 500;
    transition: all 0.15s;
}
.sealed-edition:hover {
    border-color: var(--border-moderate);
    background: var(--surface-2);
}
.sealed-edition .ss {
    font-size: var(--text-4xl);
    flex-shrink: 0;
    color: var(--activetext);
}


/* ── Hidden by search filter ── */
.sealed-edition.hidden-by-filter {
    display: none;
}
.sealed-section.hidden-by-filter {
    display: none;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .sealed-layout { grid-template-columns: 1fr; }
    .sealed-toc {
        position: static;
        height: auto;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 10px;
        gap: 2px;
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }
    .sealed-toc-title { display: none; }
    .sealed-toc-item {
        border-left: none;
        border-radius: var(--radius-sm);
        padding: 6px 10px;
    }
    .sealed-toc-item .toc-count { display: none; }
    .sealed-main { padding: 20px 16px 60px; }
    .sealed-toolbar {
        margin-left: -16px;
        margin-right: -16px;
        padding-left: 16px;
        padding-right: 16px;
    }
    .sealed-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
    /* TOC horizontal scroll instead of wrapping many items */
    .sealed-toc {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .sealed-toc-item { flex-shrink: 0; }
}

@media (max-width: 640px) {
    .sealed-main { padding: 16px 12px 60px; }
    .sealed-main h1 { font-size: var(--text-6xl); }
    .sealed-toolbar {
        margin-left: -12px;
        margin-right: -12px;
        padding-left: 12px;
        padding-right: 12px;
        gap: 8px;
    }
    .sealed-search-form { min-width: 0; max-width: none; }
    .sealed-search { min-width: 0; width: 100%; max-width: none; }
    .sealed-grid { grid-template-columns: 1fr; }
    .sealed-edition { font-size: var(--text-lg); }
    .sealed-section-header h2 { font-size: var(--text-3xl); }
}