/* A: paper directory. Scope to the app sidebar; preserve its layout and navigation. */
.sidebar.sidebar-archive {
    --directory-paper: #fcfbfa;
    --directory-ink: #402c3d;
    --directory-muted: #655260;
    --directory-line: #d5cdd2;
    --directory-selected: #e8e0e5;
    background: var(--directory-paper);
    color: var(--directory-ink);
    border-right-color: var(--directory-line);
    font-family: 'Noto Sans TC', sans-serif;
    box-shadow: none;
}
.sidebar-archive::before,
.sidebar-archive::after,
.sidebar-archive .nav-item.active::after,
.sidebar-archive .nav-tip-bubble::before { content: none; }
.sidebar-archive .sidebar-header {
    min-height: 92px;
    padding: 22px 24px;
    gap: 13px;
    border-bottom-color: var(--directory-line);
    flex-shrink: 0;
}
.sidebar-archive .sidebar-header img {
    width: 46px;
    height: 46px;
    object-fit: cover;
    object-position: center top;
    border-radius: 50%;
    box-shadow: none;
}
.sidebar-archive .sidebar-header h2 {
    color: var(--directory-ink);
    font-family: 'Noto Serif TC', serif;
    font-size: 24px;
    font-weight: 600;
}
.sidebar-archive .sidebar-nav { padding: 16px; min-height: 0; overscroll-behavior: contain; }
.sidebar-archive .nav-section-title {
    color: var(--directory-muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .03em;
    padding: 20px 12px 0;
    margin: 16px 0 10px;
    border-top: 1px solid var(--directory-line);
}
.sidebar-archive .nav-section-title:first-child { padding-top: 0; border-top: 0; margin-top: 0; }
.sidebar-archive .nav-item {
    display: grid;
    grid-template-columns: 20px minmax(0, 1fr);
    column-gap: 12px;
    row-gap: 5px;
    min-height: 44px;
    padding: 10px 12px;
    margin-bottom: 3px;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--directory-ink);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
    box-shadow: none;
    transform: none;
    transition: background-color .15s ease, color .15s ease;
}
.sidebar-archive .nav-item i,
.sidebar-archive .nav-item:hover i,
.sidebar-archive .nav-item.active i { color: #503449; }
.sidebar-archive .nav-item:hover {
    background: #f4f2f0;
    color: var(--directory-ink);
    border-color: transparent;
    transform: none;
}
.sidebar-archive .nav-item.active {
    background: var(--directory-selected);
    color: var(--directory-ink);
    font-weight: 700;
    border-color: transparent;
    box-shadow: none;
}
.sidebar-archive .nav-tip-bubble {
    position: static;
    grid-column: 2;
    padding: 0;
    max-width: none;
    white-space: normal;
    background: transparent;
    color: var(--directory-muted);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.6;
    text-align: left;
    border-radius: 0;
    box-shadow: none;
    animation: none;
    transform: none;
}
.sidebar-archive .sidebar-footer {
    padding: 14px 20px calc(14px + env(safe-area-inset-bottom, 0px));
    border-top-color: var(--directory-line);
    background: var(--directory-paper);
}
.sidebar-archive .user-info { padding: 0; border: 0; background: transparent; margin-bottom: 10px; }
.sidebar-archive .user-avatar { background: #806378; flex-shrink: 0; }
.sidebar-archive .user-name { color: var(--directory-ink); }
.sidebar-archive .user-email { color: var(--directory-muted); }
.sidebar-archive .user-tier-badge {
    background: var(--directory-selected);
    color: #503449;
    border: 0;
    border-radius: 4px;
    box-shadow: none;
    animation: none;
    font-size: 11px;
}
.sidebar-archive .btn-ghost {
    min-height: 40px;
    background: transparent;
    color: var(--directory-muted);
    border: 1px solid var(--directory-line);
    border-radius: 6px;
    box-shadow: none;
}
.sidebar-archive .btn-ghost:hover { background: #f4f2f0; color: var(--directory-ink); transform: none; }
.sidebar-archive :is(a, button):focus-visible { outline: 2px solid #503449; outline-offset: 2px; }
.sidebar-archive ::selection { background: var(--directory-selected); color: var(--directory-ink); }
.sidebar-archive .sidebar-nav::-webkit-scrollbar-thumb { background: #b8a6b3; border-radius: 3px; }
.sidebar-archive .sidebar-nav::-webkit-scrollbar-thumb:hover { background: #806378; }
@supports not (selector(::-webkit-scrollbar)) {
    .sidebar-archive .sidebar-nav { scrollbar-color: #b8a6b3 transparent; scrollbar-width: thin; }
}
.sidebar-archive .mobile-sidebar-close {
    background: transparent;
    color: #503449;
    border: 1px solid var(--directory-line);
    width: 36px;
    height: 36px;
}
.sidebar-archive .mobile-sidebar-close:hover { background: var(--directory-selected); }
.app-container > .mobile-sidebar-toggle {
    background: #fcfbfa;
    color: #503449;
    border: 1px solid #d5cdd2;
    box-shadow: none;
}
@media (max-width: 768px) {
    .sidebar.sidebar-archive { max-width: calc(100vw - 32px); }
    .sidebar.sidebar-archive.open { box-shadow: 8px 0 24px rgb(64 44 61 / 12%); }
    .sidebar-archive .sidebar-header { padding: 18px 16px; }
}
@media (prefers-reduced-motion: reduce) {
    .sidebar.sidebar-archive, .sidebar-archive .nav-item { transition: none; }
}