/* ── Annotation explorer — EC tree · GO terms ── */

.explorer-page {
    font-family: "Source Sans 3", "Segoe UI", sans-serif;
    color: var(--tp-ink);
    margin: 0;
    display: grid;
    gap: var(--tp-space-4);
}

.explorer-page h1,
.explorer-page h2,
.explorer-page h3,
.explorer-page h4 {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-weight: 700;
    letter-spacing: 0.2px;
}

/* ── Hero ── */

/* Base styles from .tp-page-hero in ui-system.css */

.explorer-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 6px 0 10px;
    color: var(--tp-color-text-muted);
    font-size: var(--tp-font-label);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.explorer-hero h1 {
    margin: 0;
    color: var(--tp-color-brand-900);
    font-size: var(--tp-heading-lg);
    line-height: 1.1;
}

.explorer-subtitle {
    margin: 10px 0 0;
    color: var(--tp-color-text-secondary);
    max-width: 980px;
    font-size: 1rem;
    line-height: 1.42;
}

.explorer-meta {
    margin-top: 14px;
}

/* ── Cards ── */

.explorer-card {
    border: 1px solid var(--tp-color-border-soft);
    border-radius: var(--tp-ui-radius-panel);
    background: var(--tp-color-surface);
    padding: 18px;
}

/* ── Workbench ── */

.explorer-workbench {
    display: grid;
    grid-template-columns: minmax(0, 1.32fr) minmax(320px, 0.68fr);
    gap: 0;
    padding: 0;
    overflow: hidden;
}

.explorer-workbench-main,
.explorer-workbench-side {
    min-width: 0;
}

.explorer-workbench-main {
    padding: 18px;
}

.explorer-workbench-side {
    border-left: 1px solid var(--tp-color-border-soft);
    background: var(--tp-color-surface-soft);
    padding: 18px;
    display: grid;
    align-content: start;
    gap: 16px;
}

/* ── Empty state ── */

.explorer-empty-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 14px;
}

.explorer-empty-card {
    min-height: 0;
}

.explorer-empty-state {
    border: 1px dashed var(--tp-color-border);
    border-radius: 14px;
    background: var(--tp-color-surface);
    padding: 18px;
    display: grid;
    gap: 10px;
}

.explorer-empty-state h2 {
    margin: 0;
    color: var(--tp-color-brand-900);
    font-size: var(--tp-heading-sm);
}

.explorer-empty-state p {
    margin: 0;
    color: var(--tp-color-text-secondary);
    line-height: 1.45;
    max-width: 64ch;
}

.explorer-empty-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 4px;
}

.explorer-empty-facts {
    display: grid;
    gap: 10px;
    align-content: start;
}

/* ── Fact cards (empty state sidebar) ── */

.explorer-fact-list {
    display: grid;
    gap: 10px;
}

.explorer-fact {
    border: 1px solid var(--tp-color-border-soft);
    border-radius: 12px;
    background: var(--tp-color-surface);
    padding: 14px;
    display: grid;
    gap: 4px;
}

.explorer-fact-label {
    color: var(--tp-color-text-muted);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.explorer-fact-value {
    color: var(--tp-color-brand-900);
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

/* ── Plot ── */

.explorer-plot-shell {
    min-height: 540px;
}

.explorer-plot-fallback {
    display: grid;
    gap: 8px;
    align-content: center;
    justify-items: start;
    min-height: 220px;
    padding: 18px;
    border: 1px dashed var(--tp-color-border-soft);
    border-radius: 12px;
    background: var(--tp-color-surface-soft);
}

.explorer-plot-fallback[hidden] {
    display: none;
}

.explorer-plot-fallback p {
    margin: 0;
    color: var(--tp-color-text-secondary);
    line-height: 1.45;
    max-width: 56ch;
}

/* ── Section heads ── */

.explorer-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
}

.explorer-head h2 {
    margin: 0;
    color: var(--tp-color-brand-900);
    font-size: 1.02rem;
    letter-spacing: 0.01em;
}

.explorer-head p {
    margin: 4px 0 0;
    color: var(--tp-color-text-muted);
    font-size: 0.88rem;
}

/* ── Selection panel ── */

.explorer-selection {
    display: grid;
    gap: 16px;
}

.explorer-selection-card {
    border: 1px solid var(--tp-color-border-soft);
    border-radius: 12px;
    background: var(--tp-color-surface);
    padding: 12px;
    transition: border-color 160ms ease;
}

.explorer-selection-card.is-empty {
    border-style: dashed;
    background: var(--tp-color-surface-soft);
}

.explorer-selection-card.is-empty .explorer-action-link {
    display: none;
}

.explorer-selection-card.is-active {
    border-color: color-mix(in srgb, var(--tp-color-brand-400) 60%, var(--tp-color-border));
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--tp-color-brand-300) 34%, transparent);
}

.explorer-selection-card h3 {
    margin: 0 0 4px;
    color: var(--tp-color-brand-900);
    font-size: 1rem;
}

.explorer-selection-card p {
    margin: 0;
    color: var(--tp-color-text-secondary);
    line-height: 1.4;
}

.explorer-selection-path {
    display: none;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid color-mix(in srgb, var(--tp-color-border-soft) 78%, white);
}

.explorer-selection-path.is-visible {
    display: grid;
    gap: 6px;
}

.explorer-selection-path-label {
    color: var(--tp-color-text-muted);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.explorer-selection-path-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.explorer-selection-path-item {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    border: 1px solid var(--tp-color-border);
    border-radius: 999px;
    background: var(--tp-color-surface-soft);
    color: var(--tp-color-brand-900);
    font-size: 0.88rem;
    line-height: 1.2;
}

/* ── Search ── */

.explorer-search {
    width: 100%;
}

/* ── Side panels ── */

.explorer-side-panel {
    display: grid;
    gap: 10px;
}

.explorer-side-panel + .explorer-side-panel {
    padding-top: 16px;
    border-top: 1px solid color-mix(in srgb, var(--tp-color-border-soft) 82%, white);
}

/* ── Annotation table ── */

.explorer-table-shell {
    height: 340px;
    min-height: 340px;
    scrollbar-gutter: stable;
    border: 1px solid var(--tp-color-border-soft);
    border-radius: 14px;
    background: var(--tp-color-surface);
    overflow: hidden;
}

.explorer-table-shell > .tp-table-shell__scroll,
.explorer-table-shell.tp-table-shell--with-export > .tp-table-shell__scroll {
    height: calc(340px - 52px);
    max-height: calc(340px - 52px);
    overflow-y: scroll !important;
    overflow-x: hidden !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    scrollbar-gutter: stable;
}

.explorer-table-shell table {
    margin-bottom: 0;
}

.explorer-table-shell thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--tp-color-surface-soft);
}

.explorer-table-shell > .tp-table-shell__scroll::-webkit-scrollbar,
.explorer-table-shell.tp-table-shell--with-export > .tp-table-shell__scroll::-webkit-scrollbar {
    width: 13px;
}

.explorer-table-shell > .tp-table-shell__scroll::-webkit-scrollbar-track,
.explorer-table-shell.tp-table-shell--with-export > .tp-table-shell__scroll::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--tp-color-surface-muted) 86%, white);
    border-radius: 999px;
}

.explorer-table-shell > .tp-table-shell__scroll::-webkit-scrollbar-thumb,
.explorer-table-shell.tp-table-shell--with-export > .tp-table-shell__scroll::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, color-mix(in srgb, var(--tp-color-brand-400) 82%, white) 0%, color-mix(in srgb, var(--tp-color-brand-700) 76%, white) 100%);
    border-radius: 999px;
    border: 2px solid color-mix(in srgb, var(--tp-color-surface-muted) 86%, white);
}

.explorer-table-empty {
    display: none;
    margin-top: 10px;
    color: var(--tp-color-text-muted);
    font-size: 0.92rem;
}

.explorer-table-empty.is-visible {
    display: block;
}

.explorer-annotation-row.is-active {
    background: var(--tp-color-surface-soft);
}

.explorer-annotation-row.is-active strong {
    color: var(--tp-color-brand-900);
}

/* ── Select button in table ── */

.explorer-table-shell .explorer-select-btn,
.explorer-table-shell .js-select-annotation {
    appearance: none;
    -webkit-appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    padding: 0.52rem 0.95rem;
    border-radius: 10px;
    border: 1.5px solid var(--tp-color-border) !important;
    font-weight: 500;
    color: var(--tp-color-brand-900) !important;
    background: var(--tp-color-surface-soft) !important;
}

.explorer-table-shell .explorer-select-btn.is-active,
.explorer-table-shell .js-select-annotation.is-active {
    color: var(--tp-color-brand-900);
    border-color: color-mix(in srgb, var(--tp-color-brand-400) 62%, var(--tp-color-border));
    background: color-mix(in srgb, var(--tp-color-surface-soft) 74%, white);
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--tp-color-brand-300) 28%, transparent);
}

.explorer-table-shell .explorer-select-btn:hover,
.explorer-table-shell .explorer-select-btn:focus-visible,
.explorer-table-shell .js-select-annotation:hover,
.explorer-table-shell .js-select-annotation:focus-visible {
    border-color: color-mix(in srgb, var(--tp-color-brand-600) 68%, var(--tp-color-border)) !important;
    background: color-mix(in srgb, var(--tp-color-surface-soft) 78%, white) !important;
    color: var(--tp-color-brand-900) !important;
}

.explorer-action-link {
    margin-top: 10px;
}

/* ── Animations ── */

.explorer-hero,
.explorer-card {
    animation: explorer-enter 0.34s ease both;
}

.explorer-card { animation-delay: 0.04s; }

@keyframes explorer-enter {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */

@media (max-width: 980px) {
    .explorer-workbench,
    .explorer-empty-layout {
        grid-template-columns: 1fr;
    }

    .explorer-workbench-side {
        border-left: 0;
        border-top: 1px solid var(--tp-color-border-soft);
    }

    .explorer-hero {
        padding: 18px 16px 16px;
    }
}