/* ══════════════════════════════════
   THEMES PAGE
   ══════════════════════════════════ */

/* ── Shared panel structure ── */

.th-explorer-panel,
.th-cooccurrence-panel,
.th-concentration-panel {
    margin-bottom: 28px;
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    animation: th-panel-in 0.5s ease both;
}

.th-explorer-panel     { animation-delay: 0.05s; }
.th-cooccurrence-panel { animation-delay: 0.15s; }
.th-concentration-panel { animation-delay: 0.25s; }

@keyframes th-panel-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.th-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
}

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

.th-icon-bar {
    width: 3px;
    height: 40px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--accent), var(--cyan));
    flex-shrink: 0;
    margin-top: 2px;
}

.th-icon-bar-matrix {
    background: linear-gradient(180deg, #B8A8FF, #FF9494);
}

.th-icon-bar-conc {
    background: linear-gradient(180deg, #5EDBA0, #FFB87A);
}

.th-panel-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -.02em;
    margin-bottom: 4px;
}

.th-panel-sub {
    font-size: .72rem;
    color: rgba(255, 255, 255, 0.45);
    letter-spacing: .03em;
    line-height: 1.4;
    max-width: 600px;
}

/* ══════════════════════════════════
   SECTION 1: THEME EXPLORER
   ══════════════════════════════════ */

/* ── Theme selector buttons ── */

.th-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.th-selector-btn {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 14px;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.th-selector-btn:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: var(--surface-hover);
}

.th-selector-btn.active {
    border-color: var(--accent);
    background: rgba(59, 123, 255, 0.08);
    box-shadow: 0 0 12px rgba(59, 123, 255, 0.1);
}

.th-selector-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.th-selector-label {
    font-family: var(--font-base);
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.th-selector-btn.active .th-selector-label {
    color: var(--text-primary);
}

.th-selector-count {
    font-family: var(--font-mono);
    font-size: .6rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    padding: 2px 6px;
    border-radius: 3px;
}

.th-selector-btn.active .th-selector-count {
    color: var(--accent);
    background: rgba(59, 123, 255, 0.12);
}

/* ── Detail area ── */

.th-detail-placeholder {
    font-size: .85rem;
    color: var(--text-muted);
    text-align: center;
    padding: 60px 20px;
    font-style: italic;
}

/* Detail header with theme name + KPIs */
.th-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    animation: th-fade-in 0.3s ease both;
}

@keyframes th-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.th-detail-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.th-detail-color-bar {
    width: 4px;
    height: 36px;
    border-radius: 2px;
}

.th-detail-theme-name {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.th-detail-kpis {
    display: flex;
    gap: 20px;
}

.th-kpi {
    text-align: center;
}

.th-kpi-value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.th-kpi-label {
    font-family: var(--font-mono);
    font-size: .55rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--text-muted);
    margin-top: 1px;
}

/* Detail body: two-column layout */
.th-detail-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    animation: th-fade-in 0.4s ease both;
    animation-delay: 0.1s;
}

/* Subsection cards inside detail */
.th-sub-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
}

.th-sub-card-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
}

.th-sub-card-title {
    font-family: var(--font-mono);
    font-size: .6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: rgba(255, 255, 255, 0.45);
}

.th-sub-card-icon {
    font-size: .7rem;
    opacity: 0.4;
}

/* Timeline chart */
.th-timeline-card {
    grid-column: 1 / -1;
}

.th-timeline-chart-wrap {
    height: 160px;
    position: relative;
}

.th-timeline-chart-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

/* Entity columns */
.th-entities-card {
    grid-column: 1 / -1;
}

.th-entities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.th-entity-col-title {
    font-family: var(--font-mono);
    font-size: .55rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.35);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.th-entity-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.th-entity-item:last-child {
    border-bottom: none;
}

.th-entity-name {
    font-size: .78rem;
    color: rgba(255, 255, 255, 0.8);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.th-entity-count {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-muted);
    flex-shrink: 0;
    margin-left: 8px;
}

.th-entity-bar-wrap {
    flex: 1;
    height: 3px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 2px;
    margin: 0 10px;
    overflow: hidden;
}

.th-entity-bar {
    height: 100%;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.th-entity-empty {
    font-size: .75rem;
    color: var(--text-muted);
    font-style: italic;
    padding: 8px 0;
}

/* Source breakdown */
.th-source-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.th-source-item:last-child {
    border-bottom: none;
}

.th-source-type-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.th-source-type-dot.official { background: #4A9E78; }
.th-source-type-dot.think_tank { background: #B56060; }

.th-source-name {
    font-size: .78rem;
    color: rgba(255, 255, 255, 0.8);
    min-width: 100px;
}

.th-source-bar-wrap {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 3px;
    overflow: hidden;
}

.th-source-bar {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

.th-source-bar.official {
    background: linear-gradient(90deg, rgba(74, 158, 120, 0.7), rgba(74, 158, 120, 0.3));
}

.th-source-bar.think_tank {
    background: linear-gradient(90deg, rgba(181, 96, 96, 0.7), rgba(181, 96, 96, 0.3));
}

.th-source-pct {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-secondary);
    min-width: 36px;
    text-align: right;
}

/* Recent documents */
.th-recent-card {
    grid-column: 1 / -1;
}

.th-recent-item {
    display: grid;
    grid-template-columns: 72px 80px 1fr;
    gap: 10px;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: background 0.15s;
}

.th-recent-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.th-recent-item:last-child {
    border-bottom: none;
}

.th-recent-date {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-muted);
}

.th-recent-source {
    font-family: var(--font-mono);
    font-size: .6rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.th-recent-title {
    font-size: .78rem;
    color: rgba(255, 255, 255, 0.8);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.th-recent-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.15s;
}

.th-recent-title a:hover {
    color: var(--accent);
}

/* ══════════════════════════════════
   SECTION 2: CO-OCCURRENCE MATRIX
   ══════════════════════════════════ */

.th-cooccurrence-meta {
    font-family: var(--font-mono);
    font-size: .6rem;
    color: var(--text-muted);
    text-align: right;
}

.th-matrix-wrap {
    overflow: hidden;
}

.th-matrix {
    display: grid;
    gap: 2px;
    width: 100%;
}

/* Corner cell */
.th-matrix-corner {
    background: transparent;
}

/* Column headers (top) — horizontal, abbreviated */
.th-matrix-col-hd {
    font-family: var(--font-mono);
    font-size: .58rem;
    font-weight: 600;
    text-align: center;
    padding: 8px 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
}

/* Row headers (left) — full name, wraps to 2 lines if needed */
.th-matrix-row-hd {
    font-family: var(--font-mono);
    font-size: .65rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    padding: 8px 12px 8px 0;
    text-align: right;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    line-height: 1.35;
}

.th-matrix-row-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Data cells — fixed size, no deformation */
.th-matrix-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    height: 40px;
    font-family: var(--font-mono);
    font-size: .7rem;
    font-weight: 600;
    transition: filter 0.15s, box-shadow 0.15s;
    cursor: default;
    position: relative;
}

.th-matrix-cell:hover {
    filter: brightness(1.3);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.th-matrix-cell.diagonal {
    background: rgba(255, 255, 255, 0.015);
    color: rgba(255, 255, 255, 0.06);
    font-size: .6rem;
}

.th-matrix-cell.zero {
    background: rgba(255, 255, 255, 0.02);
    color: rgba(255, 255, 255, 0.15);
}

/* ══════════════════════════════════
   SECTION 3: THEME CONCENTRATION
   ══════════════════════════════════ */

.th-concentration-grid {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

/* Column headers row */
.th-conc-header-row {
    display: grid;
    grid-template-columns: 140px 1fr 60px 50px;
    gap: 12px;
    align-items: center;
    padding: 0 12px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    margin-bottom: 4px;
}

.th-conc-col-hd {
    font-family: var(--font-mono);
    font-size: .55rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.35);
}

.th-conc-col-hd-right {
    text-align: right;
}

.th-conc-col-hd-center {
    text-align: center;
}

/* Source row */
.th-conc-row {
    display: grid;
    grid-template-columns: 140px 1fr 60px 50px;
    gap: 12px;
    align-items: center;
    padding: 10px 12px;
    border-radius: 6px;
    transition: background 0.15s;
    animation: th-conc-slide 0.4s ease both;
}

.th-conc-row:nth-child(2) { animation-delay: 0.03s; }
.th-conc-row:nth-child(3) { animation-delay: 0.06s; }
.th-conc-row:nth-child(4) { animation-delay: 0.09s; }
.th-conc-row:nth-child(5) { animation-delay: 0.12s; }
.th-conc-row:nth-child(6) { animation-delay: 0.15s; }
.th-conc-row:nth-child(7) { animation-delay: 0.18s; }
.th-conc-row:nth-child(8) { animation-delay: 0.21s; }

@keyframes th-conc-slide {
    from { opacity: 0; transform: translateX(-8px); }
    to   { opacity: 1; transform: translateX(0); }
}

.th-conc-row:hover {
    background: rgba(255, 255, 255, 0.025);
}

.th-conc-source {
    display: flex;
    align-items: center;
    gap: 8px;
}

.th-conc-source-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}

.th-conc-source-dot.official { background: #4A9E78; }
.th-conc-source-dot.think_tank { background: #B56060; }

.th-conc-source-name {
    font-size: .8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    white-space: nowrap;
}

.th-conc-source-count {
    font-family: var(--font-mono);
    font-size: .55rem;
    color: var(--text-muted);
}

/* Stacked bar */
.th-conc-bar-wrap {
    display: flex;
    height: 16px;
    border-radius: 4px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
}

.th-conc-bar-seg {
    height: 100%;
    transition: width 0.6s ease;
    position: relative;
    min-width: 0;
}

.th-conc-bar-seg:hover {
    filter: brightness(1.3);
}

/* Dominant theme label */
.th-conc-dominant {
    font-family: var(--font-mono);
    font-size: .6rem;
    color: var(--text-secondary);
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Diversity index */
.th-conc-diversity {
    font-family: var(--font-mono);
    font-size: .75rem;
    font-weight: 700;
    text-align: center;
    padding: 2px 8px;
    border-radius: 4px;
}

.th-conc-diversity.low {
    color: #FF9494;
    background: rgba(255, 148, 148, 0.08);
}

.th-conc-diversity.mid {
    color: #FFB87A;
    background: rgba(255, 184, 122, 0.08);
}

.th-conc-diversity.high {
    color: #5EDBA0;
    background: rgba(94, 219, 160, 0.08);
}

/* Concentration legend */
.th-conc-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.th-conc-legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.th-conc-legend-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}

.th-conc-legend-label {
    font-family: var(--font-mono);
    font-size: .55rem;
    color: rgba(255, 255, 255, 0.4);
}