/* =========================================================
   Publication Library – Single / Detail Page Styles
   ========================================================= */

/* ── Page wrapper ──────────────────────────────────────── */
.pl-page-single {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.pl-single {
    font-family: inherit;
    color: var(--pl-text, #1f2d3d);
}

/* ── Header ────────────────────────────────────────────── */
.pl-single-header {
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--pl-border, #dde3ef);
}

.pl-single-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.pl-single-title {
    font-size: clamp(1.3rem, 3vw, 1.9rem);
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 14px;
    color: var(--pl-text, #1f2d3d);
}

.pl-single-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.pl-single-cats .pl-cat-tag {
    text-decoration: none;
    transition: background .15s;
}
.pl-single-cats .pl-cat-tag:hover {
    background: #e2e8f0;
}

/* ── Two-column body ───────────────────────────────────── */
.pl-single-body {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
    align-items: start;
}

/* ── Aside (left column) ───────────────────────────────── */
.pl-single-aside {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pl-single-cover {
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,.12);
    aspect-ratio: 3/4;
    background: var(--pl-accent, #e1edff);
}
.pl-single-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.pl-single-cover--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    opacity: .4;
}

/* ── Download box ──────────────────────────────────────── */
.pl-download-box {
    background: var(--pl-surface, #fff);
    border: 1px solid var(--pl-border, #dde3ef);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.pl-download-box__title {
    margin: 0 0 12px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--pl-muted, #5e7080);
}
.pl-download-box__size {
    margin: 6px 0 0;
    font-size: 12px;
    color: var(--pl-muted, #5e7080);
    text-align: center;
}

/* Full-width button variant */
.pl-btn--full {
    width: 100%;
    justify-content: center;
    box-sizing: border-box;
}

/* Locked button */
.pl-btn--locked {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border-radius: var(--pl-radius, 6px);
    font-size: 13px;
    font-weight: 500;
    background: #f1f5f9;
    color: #64748b;
    border: 1px solid #cbd5e1;
    cursor: not-allowed;
    text-decoration: none;
}
a.pl-btn--locked {
    cursor: pointer;
}
a.pl-btn--locked:hover {
    background: #e2e8f0;
    color: #475569;
}

/* External + DOI buttons */
.pl-single-extlink,
.pl-single-doi {
    font-size: 13px;
}

/* ── Access notice ─────────────────────────────────────── */
.pl-access-notice {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
    padding: 14px 10px;
}
.pl-access-notice svg {
    opacity: .5;
    flex-shrink: 0;
}
.pl-access-notice p {
    margin: 0;
    font-size: 13px;
    color: var(--pl-muted, #5e7080);
    line-height: 1.4;
}
.pl-access-notice--login svg { color: #1a56db; opacity: .7; }
.pl-access-notice--role  svg { color: #dc2626; opacity: .7; }

/* ── Main content (right column) ───────────────────────── */
.pl-single-main {
    min-width: 0;
}

.pl-single-section {
    margin-bottom: 32px;
}
.pl-single-section__title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--pl-muted, #5e7080);
    margin: 0 0 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--pl-border, #dde3ef);
}

/* Abstract */
.pl-single-abstract {
    font-size: 15px;
    line-height: 1.7;
    color: var(--pl-text, #1f2d3d);
}
.pl-single-abstract p { margin: 0 0 1em; }

/* Definition list */
.pl-single-dl {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 0;
    margin: 0;
}
.pl-single-dl dt {
    font-weight: 600;
    font-size: 13px;
    color: var(--pl-muted, #5e7080);
    padding: 9px 16px 9px 0;
    border-bottom: 1px solid var(--pl-border, #dde3ef);
    align-self: start;
}
.pl-single-dl dd {
    font-size: 14px;
    margin: 0;
    padding: 9px 0;
    border-bottom: 1px solid var(--pl-border, #dde3ef);
    line-height: 1.55;
    word-break: break-word;
}
.pl-single-dl dt:last-of-type,
.pl-single-dl dd:last-of-type {
    border-bottom: none;
}

/* Author line */
.pl-single-authors { line-height: 1.7; }
.pl-author-footnotes {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--pl-muted, #5e7080);
}

/* Keyword tags */
.pl-keyword-tag {
    display: inline-block;
    background: #f3f4f6;
    border: 1px solid var(--pl-border, #dde3ef);
    border-radius: 20px;
    padding: 2px 10px;
    font-size: 12px;
    margin: 2px 2px 2px 0;
    color: var(--pl-muted, #5e7080);
}

/* Citation box */
.pl-citation-box {
    background: #f8f9fa;
    border: 1px solid var(--pl-border, #dde3ef);
    border-left: 3px solid var(--pl-primary, #1a56db);
    border-radius: 0 6px 6px 0;
    padding: 14px 16px;
    position: relative;
}
.pl-citation-text {
    font-size: 13px;
    line-height: 1.65;
    margin: 0 0 10px;
    color: var(--pl-text, #1f2d3d);
}
.pl-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: 1px solid var(--pl-border, #dde3ef);
    border-radius: 4px;
    padding: 4px 10px;
    font-size: 12px;
    cursor: pointer;
    color: var(--pl-muted, #5e7080);
    transition: all .15s;
}
.pl-copy-btn:hover {
    border-color: var(--pl-primary, #1a56db);
    color: var(--pl-primary, #1a56db);
}

/* Post content */
.pl-single-content {
    font-size: 15px;
    line-height: 1.7;
}

/* ── Footer ────────────────────────────────────────────── */
.pl-single-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--pl-border, #dde3ef);
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 780px) {
    .pl-single-body {
        grid-template-columns: 1fr;
    }
    .pl-single-aside {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-start;
    }
    .pl-single-cover {
        width: 120px;
        flex-shrink: 0;
    }
    .pl-download-box {
        flex: 1;
        min-width: 200px;
    }
    .pl-single-dl {
        grid-template-columns: 140px 1fr;
    }
}

@media (max-width: 480px) {
    .pl-single-aside {
        flex-direction: column;
    }
    .pl-single-cover { width: 100%; }
    .pl-single-dl {
        grid-template-columns: 1fr;
    }
    .pl-single-dl dt {
        padding-bottom: 2px;
        border-bottom: none;
        color: var(--pl-text, #1f2d3d);
    }
    .pl-single-dl dd {
        padding-top: 0;
        padding-bottom: 12px;
        color: var(--pl-muted, #5e7080);
    }
}