/* Article library: quiet, searchable, and intentionally flat. */

.list-page {
    overflow-x: hidden;
}

.list-page [hidden] {
    display: none !important;
}

.list-main {
    padding-top: 28px;
}

.list-intro {
    margin-bottom: 18px;
}

.list-intro h1 {
    margin: 0;
    color: var(--color-text);
    font-size: clamp(26px, 3vw, 32px);
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.library-stats {
    display: flex;
    flex-wrap: wrap;
    margin: 8px 0 0;
    color: var(--color-text-muted);
    font-size: 13px;
    gap: 8px 18px;
}

.search-panel,
.utility-panel {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-panel);
    background: var(--color-surface);
}

.search-panel {
    margin-bottom: 12px;
    padding: 16px 18px 0;
}

.primary-search > label,
.quick-submit-form > label,
.filter-field > label,
.filter-field > legend {
    display: block;
    margin-bottom: 6px;
    color: var(--color-text-muted);
    font-size: 12px;
    font-weight: 650;
}

.search-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.search-row input,
.quick-input,
.filter-field input,
.filter-field select,
.comment-form textarea {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-control);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 14px;
}

.search-row input::placeholder,
.quick-input::placeholder,
.filter-field input::placeholder,
.comment-form textarea::placeholder {
    color: var(--color-text-subtle);
    opacity: 1;
}

.search-row input:focus,
.quick-input:focus,
.filter-field input:focus,
.filter-field select:focus,
.comment-form textarea:focus {
    border-color: var(--color-brand);
}

.search-row .btn {
    min-width: 88px;
}

.advanced-filters {
    margin-top: 12px;
    border-top: 1px solid var(--color-border);
}

.advanced-filters > summary,
.utility-panel > summary {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    min-height: 48px;
    color: var(--color-text);
    font-size: 14px;
    font-weight: 650;
    list-style: none;
    cursor: pointer;
    gap: 10px;
}

.advanced-filters > summary::-webkit-details-marker,
.utility-panel > summary::-webkit-details-marker {
    display: none;
}

.advanced-filters > summary small,
.utility-panel > summary small {
    overflow: hidden;
    color: var(--color-text-subtle);
    font-size: 12px;
    font-weight: 450;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.advanced-filters > summary::after,
.utility-panel > summary::after {
    color: var(--color-brand);
    font-size: 12px;
    font-weight: 650;
    content: "展开";
}

.advanced-filters[open] > summary::after,
.utility-panel[open] > summary::after {
    content: "收起";
}

.advanced-filter-body,
.quick-submit-body {
    border-top: 1px solid var(--color-border);
}

.advanced-filter-body {
    padding: 16px 0 18px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.filter-field {
    min-width: 0;
}

.filter-field-author,
.sort-field {
    grid-column: span 2;
}

.sort-field {
    margin: 0;
    padding: 0;
    border: 0;
}

.sort-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.sort-controls .btn {
    width: 100%;
    min-width: 0;
    padding-inline: 12px;
}

.sort-controls .btn[aria-pressed="true"] {
    border-color: var(--color-brand);
    background: var(--color-brand-soft);
    color: var(--color-brand-hover);
}

.filter-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
    gap: 8px;
}

.utility-panel {
    margin-bottom: 12px;
    padding: 0 18px;
}

.quick-submit-body {
    padding: 14px 0 16px;
}

.quick-submit-form {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) minmax(0, 4fr) auto;
    align-items: end;
    gap: 8px;
}

.quick-submit-form > label {
    align-self: center;
    margin: 0;
}

.quick-btns {
    display: flex;
    flex-shrink: 0;
    gap: 6px;
}

.quick-loading {
    margin: 10px 0 0;
    color: var(--color-text-muted);
    font-size: 13px;
}

.quick-results {
    display: flex;
    flex-wrap: wrap;
    margin-top: 10px;
    gap: 6px;
}

.quick-result {
    display: inline-flex;
    max-width: 100%;
    padding: 6px 9px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-control);
    background: var(--color-surface-muted);
    color: var(--color-text-muted);
    font-size: 12px;
    overflow-wrap: anywhere;
}

.quick-result.success {
    border-color: var(--color-brand);
    background: var(--color-brand-soft);
    color: var(--color-brand-hover);
}

.quick-result.error {
    border-color: var(--color-danger);
    background: var(--color-danger-soft);
    color: var(--color-danger);
}

.actions {
    position: sticky;
    z-index: 10;
    top: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    padding: 10px 12px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-panel);
    background: var(--color-surface);
    gap: 12px;
}

.selected-count {
    flex: 0 0 auto;
    color: var(--color-text-muted);
    font-size: 13px;
}

.selected-count strong {
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

.actions-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
}

.actions .btn {
    min-height: 38px;
    padding: 8px 12px;
    font-size: 12px;
}

.articles {
    border-top: 1px solid var(--color-border-strong);
    border-bottom: 1px solid var(--color-border-strong);
    background: var(--color-surface);
    counter-reset: article-counter;
}

.article-item {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    padding: 18px 4px;
    border-bottom: 1px solid var(--color-border);
    counter-increment: article-counter;
    content-visibility: auto;
    contain-intrinsic-size: auto 220px;
    gap: 12px;
}

.article-item:last-child {
    border-bottom: 0;
}

.article-item:hover,
.article-item.is-selected {
    background: var(--color-surface-muted);
}

.article-index {
    display: grid;
    align-content: start;
    justify-items: center;
    gap: 10px;
}

.article-number {
    color: var(--color-text-subtle);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    line-height: 22px;
}

.article-number::before {
    content: counter(article-counter);
}

.article-checkbox {
    display: grid;
    place-items: center;
}

.article-checkbox input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--color-brand);
    cursor: pointer;
}

.article-content {
    min-width: 0;
}

.article-title-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.article-title {
    min-width: 0;
    margin: 0;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 680;
    line-height: 1.45;
    letter-spacing: -0.012em;
}

.article-title a {
    color: inherit;
    text-decoration: none;
    overflow-wrap: anywhere;
}

.article-title a:hover {
    color: var(--color-brand-hover);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

.article-title-row .reposted-badge {
    flex: 0 0 auto;
    min-height: 0;
    margin-top: 3px;
    padding: 0 0 0 7px;
    border-left: 2px solid var(--color-brand);
    border-radius: 0;
    background: transparent;
    color: var(--color-brand-hover);
    font-size: 11px;
    line-height: 1.5;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    margin-top: 5px;
    color: var(--color-text-subtle);
    font-size: 12px;
    gap: 3px 18px;
}

.article-meta a {
    color: var(--color-text-muted);
    text-decoration: none;
}

.article-meta a:hover {
    color: var(--color-brand-hover);
    text-decoration: underline;
}

.article-thoughts {
    margin: 12px 0 0;
    padding: 11px 13px;
    border-left: 3px solid var(--color-brand);
    border-radius: var(--radius-panel);
    background: var(--color-surface-muted);
    color: var(--color-text);
}

.thoughts-label {
    display: block;
    margin-bottom: 4px;
    color: var(--color-text-muted);
    font-size: 11px;
    font-weight: 700;
}

.thoughts-text {
    font-size: 13px;
    line-height: 1.65;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}

.article-summary {
    max-width: 84ch;
    margin-top: 10px;
    color: var(--color-text-muted);
    font-size: 14px;
    line-height: 1.68;
    overflow-wrap: anywhere;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    margin-top: 10px;
    gap: 6px;
}

.article-tags .tag {
    text-decoration: none;
}

.article-footer {
    margin-top: 9px;
}

.comment-toggle {
    min-height: 36px;
    padding: 7px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-control);
    background: var(--color-surface);
    color: var(--color-text-muted);
    font-size: 12px;
    font-weight: 650;
    cursor: pointer;
}

.comment-toggle:hover,
.comment-toggle[aria-expanded="true"] {
    border-color: var(--color-brand);
    background: var(--color-brand-soft);
    color: var(--color-brand-hover);
}

.comment-section {
    margin-top: 10px;
    padding: 12px 14px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-panel);
    background: var(--color-surface-muted);
}

.comment-list[aria-busy="true"] {
    cursor: progress;
}

.comment-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    color: var(--color-text-muted);
    font-size: 13px;
    text-align: center;
    gap: 10px;
}

.comment-state.is-error {
    color: var(--color-danger);
}

.comment-top-wrapper {
    border-bottom: 1px solid var(--color-border);
}

.comment-top-wrapper:last-child {
    border-bottom: 0;
}

.comment-item {
    display: grid;
    grid-template-columns: 32px minmax(0, 1fr);
    padding: 10px 0;
    gap: 9px;
}

.comment-item.comment-highlight {
    background: var(--color-brand-soft);
}

.comment-nested {
    margin-left: 28px;
}

.comment-item[data-depth="2"],
.comment-item[data-depth="3"],
.comment-item[data-depth="4"] {
    margin-left: 20px;
}

.comment-avatar {
    width: 30px;
    height: 30px;
}

.comment-avatar img,
.comment-avatar-fallback {
    display: grid;
    width: 30px;
    height: 30px;
    border-radius: 999px;
    object-fit: cover;
    place-items: center;
}

.comment-avatar-fallback {
    background: var(--color-brand-soft);
    color: var(--color-brand-hover);
    font-size: 12px;
    font-weight: 700;
}

.comment-body {
    min-width: 0;
}

.comment-header {
    display: flex;
    align-items: baseline;
    margin-bottom: 3px;
    gap: 8px;
}

.comment-author {
    color: var(--color-text);
    font-size: 12px;
    font-weight: 680;
}

.comment-time {
    color: var(--color-text-subtle);
    font-size: 11px;
}

.comment-content {
    color: var(--color-text-muted);
    font-size: 13px;
    line-height: 1.6;
    overflow-wrap: anywhere;
}

.comment-reply-ref {
    padding-left: 6px;
    border-left: 2px solid var(--color-border-strong);
    color: var(--color-text-subtle);
    font-size: 12px;
}

.comment-reply-ref:hover,
.comment-reply-ref:focus-visible {
    border-left-color: var(--color-brand);
    color: var(--color-brand-hover);
}

.comment-expand-text,
.comment-actions button,
.cancel-reply {
    min-height: 30px;
    padding: 4px 7px;
    border: 0;
    border-radius: var(--radius-control);
    background: transparent;
    color: var(--color-text-subtle);
    font-size: 12px;
    cursor: pointer;
}

.comment-expand-text:hover,
.comment-actions button:hover,
.cancel-reply:hover {
    background: var(--color-surface);
    color: var(--color-text);
}

.comment-actions {
    display: flex;
    flex-wrap: wrap;
    margin-top: 4px;
    gap: 2px;
}

.comment-actions .comment-like-btn.liked {
    background: var(--color-brand-soft);
    color: var(--color-brand-hover);
}

.comment-replies {
    margin-top: 4px;
    padding-left: 9px;
    border-left: 1px solid var(--color-border-strong);
}

.comment-show-more {
    padding: 10px 0 4px;
    text-align: center;
}

.comment-form-area {
    border-top: 1px solid var(--color-border);
}

.comment-form {
    padding-top: 12px;
}

.comment-form textarea {
    min-height: 76px;
    resize: vertical;
}

.comment-replying-to {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 7px;
    color: var(--color-text-muted);
    font-size: 12px;
    gap: 10px;
}

.comment-replying-to strong {
    color: var(--color-text);
}

.comment-form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 40px;
    margin-top: 6px;
    gap: 10px;
}

.comment-form-status {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 12px;
}

.comment-login-hint {
    padding: 12px 0 2px;
    color: var(--color-text-muted);
    font-size: 13px;
    text-align: center;
}

.comment-login-hint a {
    text-decoration: none;
}

.empty {
    padding: 54px 20px;
    color: var(--color-text-muted);
    text-align: center;
}

.empty p {
    margin: 0 0 8px;
}

.empty a {
    font-size: 13px;
}

.clipboard-fallback {
    position: fixed;
    top: 0;
    left: -10000px;
}

@media (max-width: 900px) {
    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filter-field-author,
    .sort-field {
        grid-column: span 2;
    }

    .quick-submit-form {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .quick-submit-form > label {
        grid-column: 1 / -1;
    }

    .actions {
        align-items: flex-start;
    }

    .actions-buttons {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .list-main {
        padding-top: 16px;
    }

    .list-intro {
        margin-bottom: 12px;
    }

    .list-intro h1 {
        font-size: 24px;
    }

    .library-stats {
        margin-top: 5px;
    }

    .search-panel {
        padding: 12px 12px 0;
    }

    .advanced-filters > summary,
    .utility-panel > summary {
        min-height: 44px;
    }

    .utility-panel {
        margin-bottom: 10px;
        padding: 0 12px;
    }

    .advanced-filter-body,
    .quick-submit-body {
        padding-block: 12px;
    }

    .quick-submit-form {
        grid-template-columns: minmax(0, 1fr);
    }

    .quick-submit-form > label {
        grid-column: auto;
    }

    .quick-btns {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .quick-btns .btn {
        width: 100%;
        min-width: 0;
    }

    .actions {
        display: grid;
        grid-template-columns: 1fr;
        top: 8px;
    }

    .actions-buttons {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .actions-buttons .btn {
        width: 100%;
        white-space: normal;
    }

    .actions-buttons .btn:last-child {
        grid-column: 1 / -1;
    }

    .article-item {
        grid-template-columns: 30px minmax(0, 1fr);
        padding: 14px 0;
        contain-intrinsic-size: auto 250px;
        gap: 8px;
    }

    .article-index {
        gap: 8px;
    }

    .article-title {
        font-size: 15px;
    }

    .article-summary {
        font-size: 13px;
        line-height: 1.62;
    }

    .article-thoughts {
        padding: 10px 11px;
    }

    .comment-section {
        padding: 10px;
    }

    .comment-nested {
        margin-left: 16px;
    }

    .comment-item[data-depth="2"],
    .comment-item[data-depth="3"],
    .comment-item[data-depth="4"] {
        margin-left: 10px;
    }
}

@media (max-width: 480px) {
    .search-row {
        grid-template-columns: minmax(0, 1fr) 76px;
    }

    .search-row .btn {
        min-width: 0;
        padding-inline: 10px;
    }

    .advanced-filters > summary small,
    .utility-panel > summary small {
        display: none;
    }

    .advanced-filters > summary,
    .utility-panel > summary {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .filter-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
    }

    .filter-field-author,
    .sort-field {
        grid-column: auto;
    }

    .filter-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filter-actions .btn {
        width: 100%;
    }

    .article-title-row {
        display: block;
    }

    .article-title-row .reposted-badge {
        display: inline-flex;
        margin-top: 5px;
    }

    .article-meta {
        display: grid;
        gap: 2px;
    }

    .comment-item {
        grid-template-columns: 28px minmax(0, 1fr);
        gap: 7px;
    }

    .comment-avatar,
    .comment-avatar img,
    .comment-avatar-fallback {
        width: 26px;
        height: 26px;
    }

    .comment-form-actions {
        align-items: flex-end;
    }
}