/* 관련 논문 목록(paper-related.js)과 뷰어 왼쪽 '관련 논문' 패널(viewer-sidebar-related.js).
   서재 표 말투: 가는 줄, 옅은 바탕, 글자로만 표시한다. 색은 tokens.css를 쓴다. */

.rel [hidden] {
    display: none !important;
}

.rel-tabs {
    display: flex;
    gap: 14px;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
}

.rel-tab {
    flex: none;
    white-space: nowrap;
    padding: 0 0 8px;
    border: 0;
    background: none;
    color: var(--ink-soft);
    font: inherit;
    cursor: pointer;
}

.rel-tab[aria-selected="true"] {
    color: var(--ink);
    font-weight: 600;
    box-shadow: inset 0 -2px 0 var(--ink);
}

.rel-count {
    margin-left: 3px;
    color: var(--ink-faint);
    font-weight: 400;
    font-variant-numeric: tabular-nums;
}

.rel-note,
.rel-empty {
    margin: 8px 0 4px;
    color: var(--ink-faint);
    font-size: 12px;
}

.rel-empty {
    color: var(--ink-soft);
    font-size: 13px;
}

.rel-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 2px 12px;
    padding: 10px 6px;
    border-bottom: 1px solid var(--line);
    cursor: pointer;
}

.rel-row:hover {
    background: var(--card);
}

.rel-row:focus-visible {
    outline: 2px solid var(--ink-faint);
    outline-offset: -2px;
}

.rel-title {
    font-size: 13.5px;
    font-weight: 500;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.rel-meta {
    grid-column: 1;
    overflow: hidden;
    color: var(--ink-soft);
    font-size: 12px;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.rel-link {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: start;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    color: var(--ink-soft);
    font-size: 12px;
    text-decoration: none;
    white-space: nowrap;
}

.rel-link.is-pdf {
    color: var(--accent-text);
}

.rel-link.is-none {
    color: var(--ink-faint);
}

a.rel-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* 줄 맨 아래 '읽을 논문에 담기' 글자 단추. 담은 줄은 진하게 '담음' */
.rel-save {
    grid-column: 1;
    justify-self: start;
    margin-top: 3px;
    padding: 0;
    border: 0;
    background: none;
    color: var(--ink-soft);
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}

.rel-save:hover,
.rel-save[aria-pressed="true"] {
    color: var(--ink);
}

.rel-save:disabled {
    opacity: .6;
    cursor: default;
}

.rel-more,
.rel-load {
    height: 30px;
    padding: 0 12px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-size: 13px;
    cursor: pointer;
}

.rel-more {
    display: block;
    margin: 10px auto 0;
    color: var(--ink-soft);
}

.rel-load {
    margin-top: 4px;
}

.rel-more:hover,
.rel-load:hover {
    background: var(--card);
}

/* 논문 찾기 상세: 관련 논문 머리와 '← 이전 논문' */
.paper-detail-related {
    margin-top: 26px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}

.paper-detail-back {
    display: block;
    max-width: 100%;
    margin: 0 0 10px;
    padding: 0;
    overflow: hidden;
    border: 0;
    background: none;
    color: var(--ink-soft);
    font: inherit;
    font-size: 12.5px;
    text-align: left;
    white-space: nowrap;
    text-overflow: ellipsis;
    cursor: pointer;
}

.paper-detail-back:hover {
    color: var(--ink);
}

/* 뷰어 왼쪽 '관련 논문' 패널 */
.vsr {
    padding: 12px 14px 20px;
}

/* 좁은 패널: 탭 이름과 숫자가 갈라지지 않게 간격·글씨를 줄이고, 넘치면 탭째로 다음 줄로 */
.vsr .rel-tabs {
    flex-wrap: wrap;
    gap: 4px 10px;
    font-size: 12.5px;
}

.vsr-match {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.vsr-match-label,
.vsr-pick-label {
    margin: 0 0 3px;
    color: var(--ink-faint);
    font-size: 11.5px;
}

.vsr-match-title {
    margin: 0 0 2px;
    font-size: 13.5px;
    font-weight: 600;
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.vsr-match-meta {
    margin: 0;
    color: var(--ink-soft);
    font-size: 12px;
}

.vsr-text-btn {
    padding: 0;
    border: 0;
    background: none;
    color: var(--ink-faint);
    font: inherit;
    font-size: 12px;
    text-decoration: underline;
    text-underline-offset: 3px;
    cursor: pointer;
}

.vsr-text-btn:hover {
    color: var(--ink);
}

.vsr-pick-input {
    width: 100%;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--ink);
    font: inherit;
    font-size: 13px;
}

.vsr-pick-input:focus {
    border-color: var(--ink-faint);
    outline: 0;
}

.vsr-pick-list {
    margin-top: 6px;
}

.vsr-pick-item {
    display: grid;
    gap: 2px;
    width: 100%;
    padding: 8px 6px;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: none;
    color: var(--ink);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.vsr-pick-item:hover {
    background: var(--card);
}

.vsr-pick-title {
    font-size: 13px;
    line-height: 1.4;
}

.vsr-pick-hint,
.vsr-pick-none {
    color: var(--ink-soft);
    font-size: 12px;
}

.vsr-pick-actions {
    display: flex;
    gap: 14px;
    margin-top: 10px;
}

.vsr-loading {
    display: grid;
    gap: 10px;
    padding: 6px 0;
}

.vsr-skeleton-bar {
    height: 10px;
}

/* 논문 찾기 상세: 원문 초록 아래 한국어 번역(abstract-translation.js) */
.paper-ko {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed var(--line-strong);
}

.paper-ko[hidden] {
    display: none;
}

.paper-ko-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.paper-ko-state {
    color: var(--ink-faint);
    font-size: 12px;
}

.paper-ko-retry {
    padding: 0;
    border: 0;
    background: none;
    color: var(--ink-soft);
    font: inherit;
    text-decoration: underline;
    text-underline-offset: 3px;
    cursor: pointer;
}

.paper-ko-title {
    margin: 0 0 6px;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
}

.paper-ko-title[hidden] {
    display: none;
}

.paper-ko-body {
    margin: 0;
    color: var(--ink);
    font-size: 14.5px;
    line-height: 1.85;
    overflow-wrap: anywhere;
}

/* 흘러나오는 동안 글자 끝에 깜박이는 막대 */
.paper-ko-body.is-streaming::after {
    content: "▍";
    color: var(--ink-faint);
    animation: paper-ko-caret 1s steps(1) infinite;
}

@keyframes paper-ko-caret {
    50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .paper-ko-body.is-streaming::after {
        animation: none;
    }
}