:root {
    --page-max-width: 1200px;
    --bg: #ffffff;
    --fg: #1c2333;
    --muted: #5b6475;
    --border: #d4dae3;
    --panel: #f5f7fb;
    --panel-hover: #e6eef8;
    --accent: #20609f;
    --accent-hover: #164680;
    --highlight-bg: #a2cff5;
    --shadow: 0 12px 32px rgba(27, 42, 66, 0.15);
    --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23677180' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
    --tree-width: 320px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: hsl(210, 25%, 8%);
        --fg: #c8cdd7;
        --muted: #8f9bb0;
        --border: rgba(255, 255, 255, 0.18);
        --panel: rgba(255, 255, 255, 0.06);
        --panel-hover: rgba(255, 255, 255, 0.12);
        --accent: #2b79a2;
        --accent-hover: #5aa6cf;
        --highlight-bg: #355c7d;
        --shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
        --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23a9b7c6' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Open Sans", "Segoe UI", sans-serif;
    background-color: var(--bg);
    color: var(--fg);
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover,
a:focus-visible {
    color: var(--accent-hover);
    text-decoration: underline;
}

button,
input {
    font-family: inherit;
}

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

.folders__filter,
.folders__tree-hide { display: none; }


.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.zotero-page .menu-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "search actions";
    align-items: center;
    width: 100%;
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 68px;
    background-color: transparent;
    border-bottom: 1px solid var(--border);
    column-gap: 1.5rem;
}

.menu-title {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--fg);
}

.menu-title__link {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.menu-title__link:hover,
.menu-title__link:focus-visible {
    color: var(--accent-hover);
    text-decoration: underline;
}

.zotero-header__subtitle {
    margin: 0;
    font-size: 0.9rem;
    color: var(--muted);
}

.zotero-header__search {
    grid-area: search;
    width: 100%;
    justify-self: stretch;
}

.zotero-header__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: flex-end;
    grid-area: actions;
    justify-self: end;
}

.zotero-header__home-link {
    pointer-events: none;
}

.account-control {
    position: relative;
    display: flex;
    align-items: center;
}

.account-control[hidden] {
    display: none !important;
}

.account-control__login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.account-control__login[aria-hidden="true"] {
    display: none !important;
}

.account-control__login:hover,
.account-control__login:focus-visible {
    background: var(--accent-hover);
    color: #fff;
    transform: scale(1.05);
}

.account-control__login:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.account-control__login .fa {
    font-size: 1rem;
}

.account-control__profile {
    position: relative;
    display: flex;
    align-items: center;
}

.account-control__profile[hidden] {
    display: none !important;
}

.account-control__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 0;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.account-control__avatar:hover,
.account-control__avatar:focus-visible {
    background: var(--accent-hover);
    transform: scale(1.04);
}

.account-control__avatar-initials {
    font-size: 0.95rem;
    line-height: 1;
}

.account-control__menu {
    position: absolute;
    top: calc(100% + 0.6rem);
    right: 0;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    min-width: 200px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 20;
}

.account-control__menu[hidden] {
    display: none;
}

.account-control__identity {
    margin: 0;
    font-size: 0.85rem;
    color: var(--muted);
    word-break: break-word;
}

.account-control__logout {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 0;
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
    background: var(--panel-hover);
    color: var(--fg);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.account-control__logout:hover,
.account-control__logout:focus-visible {
    background: var(--accent);
    color: #fff;
}

.zotero-header--search-active {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "search";
}

.zotero-header--search-active .zotero-header__actions {
    display: none;
}

.zotero-header--search-active .zotero-header__search {
    max-width: none;
    width: 100%;
}

.zotero-header--search-active .search-input input {
    min-width: 0;
}

.view-tabs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.view-tab {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--fg);
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.view-tab:hover:not(:disabled),
.view-tab:focus-visible {
    background-color: var(--panel-hover);
    border-color: var(--accent);
}

.view-tab--active {
    background-color: var(--panel);
    border-color: var(--accent);
}

.view-tab:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.search-input {
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.15rem 0.85rem;
    background-color: var(--panel);
    max-width: 420px;
    width: 100%;
}

.search-input input {
    background: transparent;
    border: 0;
    color: var(--fg);
    font-size: 0.95rem;
    padding: 0.35rem 0;
    min-width: 220px;
    width: 100%;
}

.search-input input::placeholder {
    color: var(--muted);
}

.search-input input:focus {
    outline: none;
}

.page-content {
    width: 100%;
    max-width: var(--page-max-width);
    margin: 0 auto;
    flex: 1;
    padding: 24px 20px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.page-footer {
    width: 100%;
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding: 16px 20px 32px;
    color: var(--muted);
    font-size: 0.85rem;
}

.view {
    display: none;
}

.view.is-active {
    display: block;
}

.folders {
    display: grid;
    grid-template-columns: minmax(220px, var(--tree-width, 320px)) minmax(6px, 6px) minmax(0, 1fr);
    column-gap: 0.75rem;
    align-items: start;
}

.folders--tree-hidden {
    grid-template-columns: 1fr;
}

.folders--tree-hidden .folders__tree,
.folders--tree-hidden .folders__resizer {
    display: none;
}

.folders__tree {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 400px;
}

.folders__tree-hide {
    align-self: flex-end;
    margin: 0.5rem 0.5rem 0 0;
    padding: 0;
}

.folders__filter {
    margin: 0.25rem 0.5rem 0.5rem;
    padding: 0.45rem 0.6rem;
    border-radius: 6px;
    border: 0;
    background: transparent;
    color: var(--fg);
    font-size: 0.9rem;
    box-shadow: none;
}

.folders__filter::placeholder {
    color: var(--muted);
}

.folders__tree-scroll {
    flex: 1;
    overflow: auto;
    padding: 0 0 0.75rem 0;
}

.tree {
    list-style: none;
    margin: 0;
    padding: 0.25rem 0.5rem 0.5rem 0.75rem;
}

.tree-node {
    margin: 0;
    padding: 0;
}

.tree-node__header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.15rem 0.35rem;
    border-radius: 6px;
    cursor: pointer;
}

.tree-node__header:focus-within,
.tree-node__header:hover {
    background-color: var(--panel-hover);
}

.tree-node__toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    width: 1.2rem;
    height: 1.2rem;
    display: grid;
    place-items: center;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0;
}

.tree-node__toggle:focus-visible {
    outline: 2px solid var(--accent);
}

.tree-node__label {
    background: none;
    border: 0;
    color: var(--fg);
    text-align: left;
    flex: 1;
    padding: 0.35rem 0.25rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.tree-node__label:disabled {
    color: var(--muted);
    cursor: default;
}

.tree-node__label--item {
    font-weight: 600;
}

.tree-node__label--match {
    background: var(--panel-hover);
    border-radius: 4px;
}

.tree-node__children {
    list-style: none;
    margin: 0;
    padding-left: 1.25rem;
}

.tree-node--collapsed > .tree-node__children {
    display: none;
}

.tree-node--hidden {
    display: none;
}

.tree-node--active > .tree-node__header {
    background-color: var(--panel-hover);
    border-left: 3px solid var(--accent);
    padding-left: 0.15rem;
}

.tree-empty {
    color: var(--muted);
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
}

.folders__resizer {
    width: 6px;
    cursor: col-resize;
    background: transparent;
    position: relative;
}

.folders__resizer::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
}

.folders__content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.folders__toolbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: 32px;
}

.folders__breadcrumbs {
    font-size: 0.9rem;
    color: var(--muted);
    flex: 1;
}

.folders__sort {
    margin-left: auto;
}

.folders__count {
    font-size: 0.85rem;
    color: var(--muted);
}

.folders__children {
    list-style: none;
    margin: 0 0 1.5rem;
    padding: 0;
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.folders__child {
    margin: 0;
    padding: 0;
}

.folders__child-button {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel);
    color: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.folders__child-button:hover,
.folders__child-button:focus {
    border-color: var(--accent);
    background: var(--panel-hover);
    box-shadow: 0 0 0 2px rgba(32, 96, 159, 0.15);
}

.folders__child-button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: none;
}

.folders__child-title {
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.35;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    max-height: 4.05rem;
}

.folders__child-meta {
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: auto;
    display: block;
}

.link-button {
    background: none;
    border: 0;
    color: var(--accent);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0;
    text-decoration: underline;
}

.link-button:hover,
.link-button:focus-visible {
    color: var(--fg);
}

.item-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.item-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: none;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.item-card:hover,
.item-card:focus-within {
    border-color: var(--accent);
    background: var(--panel-hover);
}

.item-card__button {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    width: 100%;
    padding: 1rem 1.2rem;
    text-align: left;
    background: none;
    border: 0;
    color: inherit;
    cursor: pointer;
}

.item-card__title-row {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
}

.item-card__type-icon {
    flex: 0 0 auto;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--accent);
    margin-top: 0.1rem;
}

.item-card__breadcrumbs {
    font-size: 0.8rem;
    color: var(--muted);
}

.item-card__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--fg);
}

.item-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.85rem;
    color: var(--muted);
}

.item-card__meta-part {
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
}

.item-card__meta-separator {
    color: var(--muted);
}

.meta-link-group {
    display: inline;
}

.meta-link-button {
    border: 0;
    background: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
    cursor: pointer;
    text-decoration: none;
}

.meta-link-button:hover,
.meta-link-button:focus-visible {
    color: var(--accent);
    text-decoration: underline;
}

.item-card__meta-group {
    display: inline;
}

.item-card__meta-button {
    font-size: inherit;
}

.item-card__meta-text {
    display: inline;
}

.item-card__excerpt {
    margin: 0;
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.4;
}

.item-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.75rem;
    color: var(--muted);
}

.item-card__tag-button {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: inherit;
    padding: 0.1rem 0.6rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.item-card__tag-button:hover,
.item-card__tag-button:focus-visible {
    background: var(--panel-hover);
    border-color: var(--accent);
    color: var(--fg);
}

.item-list__empty {
    color: var(--muted);
    font-size: 0.95rem;
    padding: 1rem 0;
}

.items__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.items__header h2 {
    margin: 0;
    font-size: 1.2rem;
}

.items__tools {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.items__sort {
    color: var(--muted);
}

.sort-toggle {
    display: inline-flex;
    align-items: center;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 999px;
    overflow: hidden;
}

.sort-toggle__button {
    appearance: none;
    -webkit-appearance: none;
    border: 0;
    background: transparent;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.65rem;
    min-width: 2.2rem;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.sort-toggle__button + .sort-toggle__button {
    border-left: 1px solid var(--border);
}

.sort-toggle__button:hover,
.sort-toggle__button:focus-visible {
    background: var(--panel-hover);
    color: var(--fg);
}

.sort-toggle__button.is-active {
    background: var(--accent);
    color: #fff;
}

.sort-toggle__button.is-active:hover,
.sort-toggle__button.is-active:focus-visible {
    background: var(--accent-hover);
    color: #fff;
}

.sort-toggle__button .fa {
    font-size: 0.95rem;
}

.items__count {
    color: var(--muted);
    font-size: 0.85rem;
    margin-left: auto;
}

.tree-node__count {
    margin-left: auto;
    color: var(--muted);
    font-size: 0.8rem;
    font-variant-numeric: tabular-nums;
}

.item-detail {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.item-detail__back {
    align-self: flex-start;
}

.item-detail__header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.item-detail__title-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    align-items: center;
}

.item-detail__type-icon {
    display: flex;
    align-items: center;
    font-size: 2rem;
    line-height: 1;
    color: var(--accent);
}

.item-detail__title-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1 1 240px;
    min-width: 0;
}

.item-detail__title {
    margin: 0;
    font-size: 1.6rem;
    font-weight: 700;
}

.item-detail__subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.item-detail__subtitle-group {
    display: inline;
}

.item-detail__subtitle-button {
    font-size: inherit;
}

.item-detail__breadcrumb {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.breadcrumb__link {
    color: var(--accent);
    text-decoration: none;
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
    text-decoration: underline;
}

.breadcrumb__current {
    color: var(--muted);
}

.item-detail__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.item-detail__action {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.4rem 0.9rem;
    background: transparent;
    color: var(--fg);
    font-weight: 600;
}

.item-detail__action[hidden] {
    display: none !important;
}

.item-detail__action:hover,
.item-detail__action:focus-visible {
    background: var(--panel-hover);
    border-color: var(--accent);
    text-decoration: none;
}

.item-detail__action {
    cursor: pointer;
}

.item-detail__action[disabled] {
    opacity: 0.45;
    cursor: not-allowed;
}

.item-detail__meta {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.item-detail__extra {
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--panel);
    padding: 0.75rem 1rem;
}

.item-detail__extra summary {
    margin: 0;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.item-detail__extra summary::-webkit-details-marker {
    display: none;
}

.item-detail__extra summary::after {
    content: "\f107";
    font-family: FontAwesome;
    margin-left: auto;
    transition: transform 0.2s ease;
}

.item-detail__extra[open] summary::after {
    transform: rotate(180deg);
}

.item-detail__extra-list {
    margin: 0.75rem 0 0;
    display: block;
}

.item-detail__extra-list dt {
    margin: 0;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--muted);
}

.item-detail__extra-list dd {
    margin: 0.25rem 0 0.75rem;
    color: var(--fg);
    font-size: 0.95rem;
    word-break: break-word;
}

.item-detail__abstract,
.item-detail__meta,
.item-detail__note,
.item-detail__annotations,
.item-detail__related,
.item-detail__tags {
    border-top: 1px solid var(--border);
    padding-top: 1.25rem;
    margin-top: 1.25rem;
}

.item-detail__abstract h3,
.item-detail__note h3,
.item-detail__annotations h3,
.item-detail__related h3,
.item-detail__tags h3 {
    margin: 0 0 0.75rem;
    font-size: 1.05rem;
}

.item-detail__abstract-content {
    line-height: 1.65;
}

.item-detail__citation-text {
    margin: 1rem 0 0;
    line-height: 1.6;
    font-size: 0.95rem;
    color: var(--muted);
    word-break: break-word;
}



.item-detail__note-content {
    line-height: 1.6;
}

.tag-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.tag-list li {
    padding: 0;
}

.tag-list__button {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--panel);
    font-size: 0.85rem;
    color: var(--muted);
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.tag-list__button:hover,
.tag-list__button:focus-visible {
    background: var(--panel-hover);
    border-color: var(--accent);
    color: var(--fg);
}

.annotation-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.annotation-card {
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--panel);
    padding: 0.9rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.annotation-card__text {
    font-size: 0.95rem;
    line-height: 1.5;
    font-style: italic;
    position: relative;
    color: var(--fg);
    padding-left: 1.4rem;
}

.annotation-card__text::before,
.annotation-card__text::after {
    font-style: normal;
    color: var(--accent);
}

.annotation-card__text::before {
    content: "“";
    position: absolute;
    left: 0;
    top: -0.25rem;
    font-size: 1.6rem;
    line-height: 1;
}

.annotation-card__text::after {
    content: "”";
    padding-left: 0.15rem;
    font-size: 1.2rem;
}

.annotation-card__meta {
    font-size: 0.8rem;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.annotation-card__comment {
    font-size: 0.9rem;
    color: var(--fg);
}

.annotation-card__image img {
    width: 100%;
    border-radius: 4px;
    display: block;
}

.annotation-card__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    font-size: 0.8rem;
}

.annotation-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--muted);
}

.annotation-card__tags span {
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.2rem 0.5rem;
}

.item-detail__related-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.item-detail__related-list .related-entry {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    background: var(--panel);
    color: var(--fg);
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.item-detail__related-list .related-entry:hover,
.item-detail__related-list .related-entry:focus-visible {
    background: var(--panel-hover);
    border-color: var(--accent);
    color: var(--fg);
}

.item-detail__related-list .related-entry__icon {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.item-detail__related-list .related-entry__text {
    flex: 1;
    text-align: left;
    word-break: break-word;
}

.item-detail__related-list button.related-entry {
    border: 1px solid var(--border);
    background: var(--panel);
    font: inherit;
    padding: 0.5rem 0.75rem;
}

.item-detail__related-list button.related-entry .related-entry__text {
    text-align: left;
}

.item-detail__placeholder {
    color: var(--muted);
    font-size: 1rem;
}

mark {
    background: var(--highlight-bg);
    color: var(--fg);
    padding: 0 0.15rem;
    border-radius: 4px;
}

@media (max-width: 960px) {
    :root {
        --tree-width: 260px;
    }

    .zotero-page .menu-bar {
        grid-template-columns: minmax(0, 1fr) auto;
        grid-template-areas: "search actions";
        gap: 0.75rem;
        height: 60px;
        padding: 0 16px;
    }

    .zotero-header__actions {
        justify-content: flex-end;
        width: auto;
    }

    .zotero-header__search {
        width: 100%;
    }

    .search-input {
        max-width: none;
    }

    .search-input input {
        width: 100%;
        min-width: 0;
    }

    .folders {
        grid-template-columns: 1fr;
    }

    .folders__tree,
    .folders__tree-hide,
    .folders__resizer {
        display: none;
    }

    .folders__toolbar [data-tree-show] {
        display: none !important;
    }
}

@media (max-width: 640px) {
    .page-content {
        padding: 20px 16px;
    }

    .item-card__button {
        padding: 0.85rem;
    }

    .folders__children {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        margin-bottom: 1.25rem;
    }
}