/* Docs Explorer — theme-agnostic panel styled via --lne-* custom properties.
   Hosts (document.html's light sidebar, docs.html's dark canvas panel) override
   the tokens below to match their own chrome; the structural rules stay shared
   so the two hosts render one consistent component instead of two forks. */

.lne-panel {
    --lne-bg: transparent;
    --lne-text: #1d1d1f;
    --lne-text-secondary: #6e6e73;
    --lne-border: rgba(0, 0, 0, 0.1);
    --lne-control-bg: rgba(0, 0, 0, 0.04);
    --lne-control-border: rgba(0, 0, 0, 0.12);
    --lne-accent: #667eea;
    --lne-accent-text: #fff;
    --lne-card-bg: #fff;
    --lne-card-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
    --lne-card-shadow-hover: 0 6px 20px rgba(15, 23, 42, 0.18);

    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    color: var(--lne-text);
    background: var(--lne-bg);
}

/* ---------- Toolbar ---------- */
.lne-toolbar {
    flex-shrink: 0;
    padding: 10px 12px;
    border-bottom: 1px solid var(--lne-border);
}

.lne-search-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.lne-search {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1 1 160px;
    min-width: 120px;
    padding: 0 10px;
    height: 34px;
    background: var(--lne-control-bg);
    border: 1px solid var(--lne-control-border);
    border-radius: 8px;
}

.lne-search i {
    font-size: 12px;
    color: var(--lne-text-secondary);
    flex-shrink: 0;
}

.lne-search input {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    outline: none;
    color: var(--lne-text);
    font-size: 13px;
    font-family: inherit;
    padding: 0;
}

.lne-search input::placeholder {
    color: var(--lne-text-secondary);
    opacity: 0.8;
}

.lne-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 34px;
    padding: 0 12px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.lne-btn-accent {
    background: var(--lne-accent);
    color: var(--lne-accent-text);
}

.lne-btn-accent:hover {
    filter: brightness(1.08);
}

.lne-btn-ghost {
    background: var(--lne-control-bg);
    border-color: var(--lne-control-border);
    color: var(--lne-text);
}

.lne-btn-ghost:hover {
    filter: brightness(0.96);
}

.lne-ai-toggle.active {
    background: var(--lne-accent);
    border-color: transparent;
    color: var(--lne-accent-text);
}

.lne-layout-toggle {
    display: flex;
    gap: 2px;
    padding: 2px;
    background: var(--lne-control-bg);
    border-radius: 8px;
    flex-shrink: 0;
}

.lne-layout-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--lne-text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
}

.lne-layout-btn.is-active {
    background: var(--lne-card-bg);
    color: var(--lne-text);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

.lne-filters-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.lne-filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1 1 auto;
    min-width: 0;
}

.lne-filter-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--lne-text-secondary);
    white-space: nowrap;
}

.lne-tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    flex: 1 1 auto;
    min-width: 0;
}

.lne-tag-chip {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    background: var(--lne-control-bg);
    color: var(--lne-text-secondary);
    border: 1px solid var(--lne-control-border);
    cursor: pointer;
    font-family: inherit;
}

.lne-tag-chip.active {
    background: var(--lne-accent);
    color: var(--lne-accent-text);
    border-color: transparent;
}

.lne-no-tags {
    font-size: 11px;
    color: var(--lne-text-secondary);
    font-style: italic;
}

.lne-date,
.lne-sort {
    height: 30px;
    background: var(--lne-control-bg);
    border: 1px solid var(--lne-control-border);
    border-radius: 8px;
    color: var(--lne-text);
    font-size: 12px;
    font-family: inherit;
    padding: 0 8px;
}

/* ---------- Results ---------- */
.lne-results {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 10px 12px;
}

.lne-results--card {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    align-content: start;
}

.lne-results--list {
    display: block;
}

.lne-table-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.12);
    overflow: hidden;
    color: #1e293b;
}

.lne-table-scroll {
    width: 100%;
    overflow-x: auto;
}

.lne-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.lne-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: #fff;
    border-bottom: 1px solid #e8edf5;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: #64748b;
    text-align: left;
    padding: 12px 14px;
    white-space: nowrap;
}

.lne-table-row {
    cursor: pointer;
    height: 56px;
}

.lne-table-row td {
    border-bottom: 1px solid #f1f5f9;
    padding: 10px 14px;
    vertical-align: middle;
}

.lne-table-row:hover td {
    background: #f4f8ff;
}

.lne-table-row.is-selected td,
.lne-table-row:focus-visible td {
    background: #eaf1ff;
}

.lne-table-row.is-selected td:first-child,
.lne-table-row:focus-visible td:first-child {
    box-shadow: inset 3px 0 0 #667eea;
}

.lne-table-row:focus-visible {
    outline: none;
}

.lne-th-icon,
.lne-td-icon {
    width: 44px;
    text-align: center;
    color: #94a3b8;
}

.lne-th-title,
.lne-td-title {
    width: 22%;
}

.lne-th-preview,
.lne-td-preview {
    width: 28%;
}

.lne-th-canvas,
.lne-td-canvas {
    width: 14%;
}

.lne-th-tags,
.lne-td-tags {
    width: 16%;
}

.lne-th-updated,
.lne-td-updated,
.lne-th-created,
.lne-td-created {
    width: 10%;
}

.lne-th-actions,
.lne-td-actions {
    width: 44px;
    text-align: center;
}

.lne-preview-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #64748b;
    cursor: pointer;
    font-size: 0.8125rem;
    line-height: 1;
    transition: color 0.15s, background 0.15s;
}

.lne-preview-btn:hover,
.lne-preview-btn:focus-visible {
    color: #334155;
    background: rgba(100, 116, 139, 0.12);
    outline: none;
}

.lne-preview-btn--card {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
}

.lne-card:hover .lne-preview-btn--card,
.lne-card:focus-within .lne-preview-btn--card {
    opacity: 1;
}

.lne-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 10070;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(15, 23, 42, 0.45);
}

.lne-preview-dialog {
    width: min(560px, 100%);
    max-height: min(70vh, 640px);
    display: flex;
    flex-direction: column;
    background: #ffffff;
    color: #0f172a;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.28);
    overflow: hidden;
}

.lne-preview-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 14px 10px 16px;
    border-bottom: 1px solid #e2e8f0;
}

.lne-preview-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.35;
    color: #0f172a;
}

.lne-preview-close {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #64748b;
    cursor: pointer;
}

.lne-preview-close:hover,
.lne-preview-close:focus-visible {
    background: #f1f5f9;
    color: #0f172a;
    outline: none;
}

.lne-preview-body {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 14px 16px;
    font-size: 0.875rem;
    line-height: 1.5;
    color: #334155;
    white-space: pre-wrap;
    word-break: break-word;
}

.lne-preview-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 10px 14px 14px;
    border-top: 1px solid #e2e8f0;
}

.lne-table-title {
    font-size: 15px;
    font-weight: 600;
    color: #0f172a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lne-table-preview {
    font-size: 12.5px;
    color: #64748b;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lne-table-preview mark {
    background: rgba(250, 204, 21, 0.55);
    color: inherit;
    border-radius: 2px;
}

.lne-table-canvas {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 3px 8px;
    border: 1px solid #e2e8f0;
    border-radius: 999px;
    font-size: 11.5px;
    color: #475569;
    background: #f8fafc;
}

.lne-table-canvas i {
    flex-shrink: 0;
    font-size: 10px;
    color: #94a3b8;
}

.lne-table-canvas span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lne-table-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
    min-width: 0;
}

.lne-table-time {
    font-size: 12px;
    color: #475569;
    white-space: nowrap;
}

.lne-table-time--secondary {
    color: #94a3b8;
}

.lne-table-muted {
    color: #cbd5e1;
}

.lne-table-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 12px 16px;
    border-top: 1px solid #e8edf5;
    background: #fff;
    color: #64748b;
    font-size: 12.5px;
}

.lne-table-footer-pager {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex: 1;
}

.lne-table-footer-perpage {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #64748b;
}

.lne-table-footer .lne-btn {
    height: 30px;
    color: #334155;
    background: #f8fafc;
    border-color: #e2e8f0;
}

.lne-table-footer .lne-btn:disabled {
    opacity: 0.45;
    cursor: default;
}

.lne-table-footer .lne-sort {
    color: #334155;
    background: #fff;
    border-color: #e2e8f0;
}

.lne-skeleton--row {
    height: 48px;
    margin: 8px 14px;
    border-radius: 8px;
}

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

@media (max-width: 900px) {
    .lne-th-preview,
    .lne-td-preview,
    .lne-th-created,
    .lne-td-created {
        display: none;
    }
}

@media (max-width: 640px) {
    .lne-th-canvas,
    .lne-td-canvas,
    .lne-th-tags,
    .lne-td-tags {
        display: none;
    }
}

/* ---------- Card ---------- */
.lne-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--lne-card-bg);
    border-radius: 10px;
    padding: 12px 12px 10px 15px;
    min-height: 110px;
    cursor: pointer;
    overflow: hidden;
    color: #1e293b;
    box-shadow: var(--lne-card-shadow);
    transition: box-shadow 0.15s ease, transform 0.1s ease;
}

.lne-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 3px;
    background: var(--lne-card-accent, #94a3b8);
}

.lne-card:hover,
.lne-card:focus-visible {
    box-shadow: var(--lne-card-shadow-hover);
    transform: translateY(-1px);
    outline: none;
}

.lne-card-content {
    flex: 1;
    color: #475569;
    font-size: 13px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    white-space: pre-wrap;
    word-break: break-word;
}

.lne-card-content mark {
    background: rgba(250, 204, 21, 0.55);
    color: inherit;
    border-radius: 2px;
}

.lne-card-content--empty {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #94a3b8;
    font-style: italic;
}

.lne-card-footer {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: auto;
    padding-top: 2px;
}

.lne-card-time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10.5px;
    color: #94a3b8;
    font-weight: 500;
}

.lne-link-preview {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.lne-link-thumb {
    width: 100%;
    max-height: 100px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.lne-link-title a {
    color: #475569;
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
}

.lne-link-title a:hover {
    text-decoration: underline;
}

.lne-link-site {
    font-size: 10px;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.lne-link-desc {
    font-size: 12px;
    color: #64748b;
    line-height: 1.4;
}

/* ---------- Tag pills ---------- */
.lne-tag {
    --lne-tag-color: #94a3b8;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    max-width: 110px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 10.5px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background: color-mix(in srgb, var(--lne-tag-color) 14%, #fff);
    color: color-mix(in srgb, var(--lne-tag-color) 72%, #1e293b);
    border: 1px solid color-mix(in srgb, var(--lne-tag-color) 26%, #fff);
}

.lne-tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--lne-tag-color);
    flex: 0 0 auto;
}

.lne-tag--ai {
    border-style: dashed;
}

.lne-tag-more {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 10.5px;
    font-weight: 600;
    background: #f1f5f9;
    color: #475569;
    border: 1px solid #e2e8f0;
}

/* ---------- List row ---------- */
.lne-row {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 10px;
    border: none;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
    color: inherit;
    border-left: 3px solid transparent;
}

.lne-row:hover,
.lne-row:focus-visible {
    background: var(--lne-control-bg);
    outline: none;
}

.lne-row-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--lne-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.lne-row-preview {
    font-size: 11.5px;
    color: var(--lne-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lne-row-preview mark {
    background: rgba(250, 204, 21, 0.55);
    color: inherit;
    border-radius: 2px;
}

.lne-row-meta {
    font-size: 10.5px;
    color: var(--lne-text-secondary);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---------- Empty / error / skeleton ---------- */
.lne-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
    padding: 40px 20px;
    color: var(--lne-text-secondary);
}

.lne-empty-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--lne-control-bg);
    color: var(--lne-text-secondary);
    font-size: 22px;
}

.lne-empty h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--lne-text);
}

.lne-empty p {
    margin: 0;
    max-width: 320px;
    font-size: 12.5px;
}

.lne-empty--error .lne-empty-icon {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.lne-skeleton {
    min-height: 110px;
    border-radius: 10px;
    background: linear-gradient(90deg, var(--lne-control-bg) 25%, rgba(0, 0, 0, 0.08) 37%, var(--lne-control-bg) 63%);
    background-size: 400% 100%;
    animation: lne-shimmer 1.4s ease infinite;
}

.lne-results--list .lne-skeleton {
    min-height: 52px;
    border-radius: 8px;
}

@keyframes lne-shimmer {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

/* BD-113: temporary deep-link focus flash (cards + table rows). */
.lne-card.lne-focus-flash,
.lne-list-row.lne-focus-flash,
.lne-table-row.lne-focus-flash td {
    animation: lneFocusFlash 2s ease-out forwards;
}

.lne-card.lne-focus-flash,
.lne-list-row.lne-focus-flash {
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.55);
}

.lne-table-row.lne-focus-flash td {
    background: #eaf1ff;
}

.lne-table-row.lne-focus-flash td:first-child {
    box-shadow: inset 3px 0 0 #667eea;
}

@keyframes lneFocusFlash {
    0% {
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.6);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0);
    }
}

.lne-table-row.lne-focus-flash {
    animation: none;
}

.lne-table-row.lne-focus-flash td {
    animation: lneTableFocusFlash 2s ease-out forwards;
}

@keyframes lneTableFocusFlash {
    0% {
        background: #dbe7ff;
    }
    100% {
        background: #eaf1ff;
    }
}