/* =====================================================================
   📈 Chapter Learning Dashboard Styles v2.0 — Balanced Modern
   - Light + Dark themes
   - Desktop + Tablet + Mobile responsive
   - Bilingual-safe (no text in CSS)
   - Eye-catching effects: gradient cards, hover lift, stagger animations,
     gradient bars, glassmorphism panels — without breaking calculations.
   ===================================================================== */

/* ---- Theme variables (scoped to dashboard root, no global pollution) ---- */
.chapter-dashboard-card {
    --cd-radius-card: 22px;
    --cd-radius-panel: 18px;
    --cd-radius-sm: 12px;
    --cd-pad-card: 18px;
    --cd-pad-panel: 14px;
    --cd-gap: 12px;

    /* Light defaults */
    --cd-card-bg: linear-gradient(135deg, rgba(255,255,255,.94), rgba(244,247,255,.92));
    --cd-card-border: rgba(15,18,28,.08);
    --cd-card-shadow: 0 18px 48px rgba(46,52,90,.10);
    --cd-panel-bg: rgba(255,255,255,.70);
    --cd-panel-border: rgba(15,18,28,.07);
    --cd-text: #1a1f33;
    --cd-text-muted: rgba(40,46,70,.65);
    --cd-text-dim: rgba(40,46,70,.45);

    --cd-primary: #6366f1;
    --cd-primary-soft: rgba(99,102,241,.14);
    --cd-success: #16a34a;
    --cd-success-soft: rgba(34,197,94,.14);
    --cd-warning: #ea580c;
    --cd-warning-soft: rgba(249,115,22,.14);
    --cd-danger: #dc2626;
    --cd-danger-soft: rgba(239,68,68,.14);
    --cd-amber: #ca8a04;
    --cd-amber-soft: rgba(250,204,21,.18);
    --cd-info: #0284c7;
    --cd-info-soft: rgba(2,132,199,.14);
}
[data-theme="dark"] .chapter-dashboard-card {
    --cd-card-bg: linear-gradient(135deg, rgba(24,28,42,.94), rgba(18,21,33,.94));
    --cd-card-border: rgba(255,255,255,.10);
    --cd-card-shadow: 0 18px 48px rgba(0,0,0,.42);
    --cd-panel-bg: rgba(255,255,255,.04);
    --cd-panel-border: rgba(255,255,255,.08);
    --cd-text: #f4f6ff;
    --cd-text-muted: rgba(245,247,255,.66);
    --cd-text-dim: rgba(245,247,255,.40);

    --cd-primary: #8b99ff;
    --cd-primary-soft: rgba(139,153,255,.20);
    --cd-success-soft: rgba(34,197,94,.20);
    --cd-warning-soft: rgba(249,115,22,.22);
    --cd-danger-soft: rgba(239,68,68,.22);
    --cd-amber-soft: rgba(250,204,21,.22);
    --cd-info-soft: rgba(2,132,199,.22);
}

/* ---- Root card ---- */
.chapter-dashboard-root { width: 100%; }
.chapter-dashboard-card {
    width: 100%;
    border: 1px solid var(--cd-card-border);
    border-radius: var(--cd-radius-card);
    padding: var(--cd-pad-card);
    background: var(--cd-card-bg);
    box-shadow: var(--cd-card-shadow);
    color: var(--cd-text);
}

/* ---- Header ---- */
.chapter-dashboard-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}
.chapter-dashboard-title {
    margin: 0 0 4px;
    font-size: clamp(1.25rem, 2.4vw, 1.7rem);
    font-weight: 950;
    background: linear-gradient(135deg, var(--cd-primary), #d946ef 60%, #f59e0b);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.01em;
}
[data-theme="dark"] .chapter-dashboard-title {
    background: linear-gradient(135deg, #b8c1ff, #f0a4ff 50%, #fcd34d);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.chapter-dashboard-header p {
    margin: 0;
    color: var(--cd-text-muted);
    font-size: .92rem;
    line-height: 1.55;
}
.chapter-dashboard-refresh {
    white-space: nowrap;
    transition: transform .18s ease, box-shadow .18s ease;
}
.chapter-dashboard-refresh:hover {
    transform: translateY(-1px) rotate(-2deg);
}

/* ---- Toolbar / Filters ---- */
.chapter-dashboard-toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--cd-gap);
    align-items: end;
    margin: 10px 0 14px;
    padding: 14px;
    border: 1px solid var(--cd-panel-border);
    border-radius: var(--cd-radius-panel);
    background: var(--cd-panel-bg);
    backdrop-filter: blur(8px);
}
.chapter-dashboard-filter-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(150px, 1fr));
    gap: 10px;
}
.chapter-dashboard-filter-grid label {
    display: grid;
    gap: 5px;
    font-size: .76rem;
    font-weight: 900;
    color: var(--cd-text-muted);
    align-content: end;
}
.chapter-dashboard-filter-icon {
    margin-right: 4px;
    font-size: .9rem;
}
.chapter-dashboard-select {
    width: 100%;
    border: 1px solid var(--cd-panel-border);
    border-radius: var(--cd-radius-sm);
    padding: 9px 11px;
    background: var(--cd-panel-bg);
    color: var(--cd-text);
    font: inherit;
    transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.chapter-dashboard-select:hover {
    border-color: var(--cd-primary);
}
.chapter-dashboard-select:focus {
    outline: none;
    border-color: var(--cd-primary);
    box-shadow: 0 0 0 3px var(--cd-primary-soft);
}
.chapter-dashboard-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}
.chapter-dashboard-btn-ghost.is-off { opacity: .55; }
.chapter-dashboard-btn-ghost.is-on  { opacity: 1; }
.chapter-dashboard-filter-note {
    grid-column: 1 / -1;
    font-size: .76rem;
    color: var(--cd-text-dim);
}

/* ---- Metric cards ---- */
.chapter-dashboard-metrics {
    display: grid;
    grid-template-columns: repeat(5, minmax(120px, 1fr));
    gap: 10px;
    margin: 12px 0 16px;
}
.chapter-dashboard-metric-card {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    align-items: center;
    border: 1px solid var(--cd-panel-border);
    border-radius: 16px;
    padding: 12px 13px;
    background: var(--cd-panel-bg);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    animation: cdFadeUp .45s ease both;
    animation-delay: calc(var(--cd-stagger, 0) * 60ms);
}
.chapter-dashboard-metric-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, transparent, transparent);
    opacity: .85;
    pointer-events: none;
    z-index: 0;
    transition: opacity .22s ease;
}
.chapter-dashboard-metric-card > * { position: relative; z-index: 1; }
.chapter-dashboard-metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(15,18,28,.10);
    border-color: var(--cd-primary);
}
.chapter-dashboard-metric-icon {
    font-size: 1.5rem;
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--cd-panel-bg);
    border: 1px solid var(--cd-panel-border);
}
.chapter-dashboard-metric-label {
    font-size: .78rem;
    font-weight: 800;
    color: var(--cd-text-muted);
    text-transform: uppercase;
    letter-spacing: .03em;
}
.chapter-dashboard-metric-value {
    font-size: 1.7rem;
    font-weight: 950;
    margin-top: 2px;
    line-height: 1.1;
    color: var(--cd-text);
    font-variant-numeric: tabular-nums;
}
.chapter-dashboard-metric-note {
    font-size: .72rem;
    color: var(--cd-text-dim);
    margin-top: 2px;
}
.chapter-dashboard-metric-bar {
    margin-top: 8px;
    height: 6px;
    border-radius: 999px;
    background: rgba(0,0,0,.06);
    overflow: hidden;
}
[data-theme="dark"] .chapter-dashboard-metric-bar {
    background: rgba(255,255,255,.08);
}
.chapter-dashboard-metric-bar > span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--cd-primary), #d946ef);
    transition: width .9s ease;
    animation: cdBarGrow .9s ease both;
}
.chapter-dashboard-metric-bar.is-good > span { background: linear-gradient(90deg, var(--cd-success), #22c55e); }
.chapter-dashboard-metric-bar.is-mid  > span { background: linear-gradient(90deg, #facc15, var(--cd-amber)); }
.chapter-dashboard-metric-bar.is-low  > span { background: linear-gradient(90deg, var(--cd-danger), var(--cd-warning)); }

/* Card variants */
.chapter-dashboard-metric-card--chapters::before  { background: linear-gradient(135deg, var(--cd-primary-soft), transparent 70%); }
.chapter-dashboard-metric-card--sessions::before  { background: linear-gradient(135deg, var(--cd-info-soft), transparent 70%); }
.chapter-dashboard-metric-card--questions::before { background: linear-gradient(135deg, var(--cd-primary-soft), transparent 70%); }
.chapter-dashboard-metric-card--mastery.is-good::before { background: linear-gradient(135deg, var(--cd-success-soft), transparent 70%); }
.chapter-dashboard-metric-card--mastery.is-mid::before  { background: linear-gradient(135deg, var(--cd-amber-soft), transparent 70%); }
.chapter-dashboard-metric-card--mastery.is-low::before  { background: linear-gradient(135deg, var(--cd-danger-soft), transparent 70%); }
.chapter-dashboard-metric-card--review.is-warm::before  { background: linear-gradient(135deg, var(--cd-warning-soft), transparent 70%); }
.chapter-dashboard-metric-card--review.is-mute::before  { opacity: .35; }
.chapter-dashboard-metric-card--review.is-warm { border-color: rgba(249,115,22,.40); }

/* ---- Layout grids ---- */
.chapter-dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--cd-gap);
    margin-top: var(--cd-gap);
}
.chapter-dashboard-grid--lower { align-items: stretch; }

/* ---- Panel ---- */
.chapter-dashboard-panel {
    border: 1px solid var(--cd-panel-border);
    border-radius: var(--cd-radius-panel);
    padding: var(--cd-pad-panel);
    background: var(--cd-panel-bg);
    backdrop-filter: blur(6px);
    animation: cdFadeUp .45s ease both;
}
.chapter-dashboard-panel h4 {
    margin: 0 0 10px;
    font-size: 1rem;
    font-weight: 900;
    color: var(--cd-text);
    letter-spacing: -0.005em;
}
.chapter-dashboard-panel--review {
    border-color: rgba(249,115,22,.22);
    background: linear-gradient(180deg, rgba(249,115,22,.06), var(--cd-panel-bg) 60%);
}

/* ---- Charts ---- */
.chapter-dashboard-chart-wrap {
    position: relative;
    min-height: 250px;
    height: 250px;
    width: 100%;
}
.chapter-dashboard-chart-empty::after {
    content: attr(data-empty-th);
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: var(--cd-text-dim);
    font-size: .9rem;
    font-style: italic;
}
[lang="en"] .chapter-dashboard-chart-empty::after,
html[lang="en"] .chapter-dashboard-chart-empty::after {
    content: attr(data-empty-en);
}

.chapter-dashboard-selector-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}
.chapter-dashboard-selector-row label {
    font-size: .78rem;
    font-weight: 850;
    color: var(--cd-text-muted);
}
.chapter-dashboard-selector-row .chapter-dashboard-select {
    flex: 1;
    min-width: 220px;
}

/* Trend chart meta strip — sessions / items / freshness / confidence */
.chapter-dashboard-trend-meta { margin: 4px 0 8px; }
.cd-trend-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.cd-trend-meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: .72rem;
    font-weight: 800;
    background: var(--cd-panel-bg);
    border: 1px solid var(--cd-panel-border);
    color: var(--cd-text-muted);
}
.cd-trend-meta-pill.cd-trend-meta-conf {
    background: var(--cd-primary-soft);
    color: var(--cd-primary);
    border-color: rgba(99,102,241,.30);
}

/* ---- Review list ---- */
.chapter-dashboard-review-list {
    display: grid;
    gap: 8px;
}
.chapter-dashboard-review-item {
    border: 1px solid rgba(249,115,22,.22);
    border-radius: 14px;
    padding: 10px 12px;
    background: linear-gradient(135deg, rgba(249,115,22,.10), rgba(249,115,22,.04));
    animation: cdFadeUp .35s ease both;
    animation-delay: calc(var(--cd-stagger, 0) * 50ms);
    transition: transform .18s ease, box-shadow .18s ease;
}
.chapter-dashboard-review-item:hover {
    transform: translateX(2px);
    box-shadow: 0 6px 16px rgba(249,115,22,.14);
}
.chapter-dashboard-review-main {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
}
.chapter-dashboard-review-main b {
    font-size: .92rem;
    color: var(--cd-text);
}
.chapter-dashboard-review-main span,
.chapter-dashboard-review-meta {
    font-size: .78rem;
    color: var(--cd-text-muted);
}
.chapter-dashboard-soft-note {
    border-radius: 14px;
    padding: 12px;
    background: rgba(0,0,0,.035);
    color: var(--cd-text-muted);
    line-height: 1.6;
    font-size: .9rem;
    margin-top: 10px;
}
[data-theme="dark"] .chapter-dashboard-soft-note {
    background: rgba(255,255,255,.04);
}

/* ---- Empty state ---- */
.chapter-dashboard-empty-state {
    text-align: center;
    padding: 28px 18px;
}
.chapter-dashboard-empty-state-icon {
    font-size: 2.6rem;
    margin-bottom: 8px;
    animation: cdFloat 3.6s ease-in-out infinite;
}
.chapter-dashboard-empty-state-title {
    font-weight: 900;
    color: var(--cd-text);
    margin-bottom: 4px;
}
.chapter-dashboard-empty-state-msg {
    color: var(--cd-text-muted);
    font-size: .9rem;
    line-height: 1.55;
}

/* ---- Table ---- */
.chapter-dashboard-table-panel { margin-top: 12px; }
.chapter-dashboard-table-wrap {
    overflow: auto;
    max-height: 360px;
    border-radius: 14px;
}
.chapter-dashboard-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 920px;
    font-size: .82rem;
}
.chapter-dashboard-table th,
.chapter-dashboard-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--cd-panel-border);
    vertical-align: top;
    text-align: left;
    color: var(--cd-text);
}
.chapter-dashboard-table th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--cd-panel-bg);
    backdrop-filter: blur(8px);
    font-weight: 900;
    color: var(--cd-text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    font-size: .72rem;
}
.chapter-dashboard-table tbody tr {
    transition: background .15s ease;
}
.chapter-dashboard-table tbody tr:hover {
    background: var(--cd-primary-soft);
}
.chapter-dashboard-table-title {
    font-weight: 900;
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.chapter-dashboard-table-sub {
    color: var(--cd-text-dim);
    font-size: .72rem;
    margin-top: 2px;
}
.chapter-dashboard-table-small {
    max-width: 220px;
    line-height: 1.45;
    color: var(--cd-text-muted);
}

/* ---- Status badges ---- */
.chapter-dashboard-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 3px 9px;
    font-size: .72rem;
    font-weight: 900;
    white-space: nowrap;
    border: 1px solid transparent;
}
.chapter-dashboard-badge.good   { background: var(--cd-success-soft); color: var(--cd-success); border-color: rgba(34,197,94,.30); }
.chapter-dashboard-badge.warn   { background: var(--cd-amber-soft); color: var(--cd-amber); border-color: rgba(250,204,21,.30); }
.chapter-dashboard-badge.danger { background: var(--cd-danger-soft); color: var(--cd-danger); border-color: rgba(239,68,68,.30); }
.chapter-dashboard-badge.muted  { background: rgba(127,127,127,.10); color: var(--cd-text-muted); }
[data-theme="dark"] .chapter-dashboard-badge.good   { color: #6ee7a4; }
[data-theme="dark"] .chapter-dashboard-badge.warn   { color: #fcd34d; }
[data-theme="dark"] .chapter-dashboard-badge.danger { color: #fca5a5; }
[data-theme="dark"] .chapter-dashboard-badge.muted  { color: var(--cd-text-muted); }

/* ---- Teacher panel + severity-grouped chips ---- */
.chapter-dashboard-teacher-panel { margin-top: 12px; }
.chapter-dashboard-teacher-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--cd-gap);
    margin: 8px 0 12px;
}
.cd-teacher-col > b {
    display: block;
    margin-bottom: 8px;
    color: var(--cd-text);
    font-size: .92rem;
}
.cd-sev-list {
    display: grid;
    gap: 8px;
}
.cd-sev-row {
    border-radius: 12px;
    padding: 8px 10px;
    background: rgba(0,0,0,.03);
}
[data-theme="dark"] .cd-sev-row { background: rgba(255,255,255,.035); }
.cd-sev-row.cd-sev-critical { background: var(--cd-danger-soft); }
.cd-sev-row.cd-sev-high     { background: var(--cd-warning-soft); }
.cd-sev-row.cd-sev-medium   { background: var(--cd-amber-soft); }

.cd-sev-tag {
    display: inline-block;
    font-size: .68rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--cd-text);
    margin-bottom: 6px;
}

.cd-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.chapter-dashboard-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 8px;
}
.chapter-dashboard-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border-radius: 999px;
    padding: 5px 11px;
    font-size: .74rem;
    font-weight: 800;
    border: 1px solid var(--cd-panel-border);
    background: var(--cd-panel-bg);
    color: var(--cd-text);
    transition: transform .15s ease, box-shadow .15s ease;
    animation: cdFadeUp .3s ease both;
    animation-delay: calc(var(--cd-stagger, 0) * 35ms);
}
.chapter-dashboard-chip:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(15,18,28,.12);
}
.chapter-dashboard-chip .cd-chip-meta {
    font-weight: 700;
    opacity: .65;
    font-size: .7rem;
    margin-left: 2px;
}

/* Severity color tints */
.chapter-dashboard-chip.cd-chip-critical { border-color: rgba(239,68,68,.40);  color: var(--cd-danger);  background: rgba(239,68,68,.08); }
.chapter-dashboard-chip.cd-chip-high     { border-color: rgba(249,115,22,.42); color: var(--cd-warning); background: rgba(249,115,22,.10); }
.chapter-dashboard-chip.cd-chip-medium   { border-color: rgba(250,204,21,.42); color: var(--cd-amber);   background: rgba(250,204,21,.12); }
[data-theme="dark"] .chapter-dashboard-chip.cd-chip-critical { color: #fca5a5; }
[data-theme="dark"] .chapter-dashboard-chip.cd-chip-high     { color: #fdba74; }
[data-theme="dark"] .chapter-dashboard-chip.cd-chip-medium   { color: #fde68a; }

/* legacy chip variants (still used as fallback) */
.chapter-dashboard-chip.warn   { border-color: rgba(255,152,0,.30);  background: rgba(255,193,7,.12); color: var(--cd-amber); }
.chapter-dashboard-chip.danger { border-color: rgba(244,67,54,.26);  background: rgba(244,67,54,.10); color: var(--cd-danger); }

.chapter-dashboard-muted {
    color: var(--cd-text-dim);
    font-size: .86rem;
}

/* ---- Info button + modal ---- */
.chapter-dashboard-info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin-left: 5px;
    border: 1px solid var(--cd-panel-border);
    border-radius: 999px;
    background: var(--cd-panel-bg);
    color: var(--cd-text);
    font-size: .76rem;
    font-weight: 950;
    line-height: 1;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.chapter-dashboard-info-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15,18,28,.16);
    background: var(--cd-primary-soft);
    color: var(--cd-primary);
}

.chapter-dashboard-modal[hidden] { display: none !important; }
.chapter-dashboard-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: grid;
    place-items: center;
    padding: 16px;
    animation: cdFadeUp .25s ease both;
}
.chapter-dashboard-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.55);
    backdrop-filter: blur(4px);
}
.chapter-dashboard-modal-card {
    position: relative;
    width: min(760px, 96vw);
    max-height: min(82vh, 760px);
    overflow: auto;
    border-radius: 22px;
    padding: 22px;
    background: #fff;
    color: #111;
    box-shadow: 0 28px 88px rgba(0,0,0,.36);
}
[data-theme="dark"] .chapter-dashboard-modal-card {
    background: #181b24;
    color: #f5f7ff;
}
.chapter-dashboard-modal-card h3 { margin: 0 34px 8px 0; }
.chapter-dashboard-modal-card h4 { margin: 16px 0 8px; }
.chapter-dashboard-modal-card ul { margin: 0; padding-left: 20px; }
.chapter-dashboard-modal-card li { margin: 7px 0; line-height: 1.55; }
.chapter-dashboard-modal-card li span { color: var(--cd-text-muted); font-size: .88rem; }
.chapter-dashboard-modal-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 999px;
    background: rgba(0,0,0,.08);
    color: inherit;
    font-size: 1.4rem;
    cursor: pointer;
    transition: background .15s ease, transform .15s ease;
}
.chapter-dashboard-modal-close:hover {
    background: rgba(0,0,0,.16);
    transform: rotate(90deg);
}

/* ---- Animations ---- */
@keyframes cdFadeUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes cdBarGrow {
    from { width: 0; }
}
@keyframes cdFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-4px); }
}
@media (prefers-reduced-motion: reduce) {
    .chapter-dashboard-metric-card,
    .chapter-dashboard-panel,
    .chapter-dashboard-review-item,
    .chapter-dashboard-chip,
    .chapter-dashboard-empty-state-icon,
    .chapter-dashboard-modal {
        animation: none !important;
    }
    .chapter-dashboard-metric-bar > span { animation: none !important; transition: none !important; }
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .chapter-dashboard-metrics {
        grid-template-columns: repeat(3, minmax(120px, 1fr));
    }
}
@media (max-width: 880px) {
    .chapter-dashboard-toolbar { grid-template-columns: 1fr; }
    .chapter-dashboard-actions { justify-content: flex-start; }
    .chapter-dashboard-filter-grid,
    .chapter-dashboard-teacher-grid { grid-template-columns: 1fr; }
    .chapter-dashboard-grid { grid-template-columns: 1fr; }
    .chapter-dashboard-header { flex-direction: column; }
}
@media (max-width: 700px) {
    .chapter-dashboard-filter-grid { grid-template-columns: 1fr; }
    .chapter-dashboard-actions .btn { flex: 1 1 150px; }
    .chapter-dashboard-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 520px) {
    .chapter-dashboard-card {
        padding: 14px;
        border-radius: 18px;
    }
    .chapter-dashboard-metrics { grid-template-columns: 1fr; }
    .chapter-dashboard-chart-wrap { min-height: 220px; height: 220px; }
    .chapter-dashboard-metric-value { font-size: 1.5rem; }
    .chapter-dashboard-metric-icon { font-size: 1.3rem; width: 34px; height: 34px; }
}

/* ---- Sectioned layout — USD "ทั้งหมด" tab ---- */
.chapter-dashboard-card--sectioned {
    border-radius: 0;
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
}

.chapter-dashboard-section-block {
    margin-top: 10px;
    border: 1px solid var(--cd-panel-border);
    border-radius: var(--cd-radius-panel);
    overflow: hidden;
    animation: cdFadeUp .4s ease both;
}

.chapter-dashboard-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--cd-primary-soft);
    border-bottom: 1px solid var(--cd-panel-border);
}

.cd-sec-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 22px;
    padding: 0 6px;
    border-radius: 6px;
    background: var(--cd-primary);
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .3px;
    flex-shrink: 0;
}

.chapter-dashboard-section-body {
    padding: var(--cd-pad-panel);
    background: var(--cd-panel-bg);
}

/* Flatten nested panels inside section-body to avoid double-card look */
.chapter-dashboard-section-body > .chapter-dashboard-panel,
.chapter-dashboard-section-body > .chapter-dashboard-panel--review,
.chapter-dashboard-section-body > .chapter-dashboard-table-panel {
    border: none;
    background: transparent;
    backdrop-filter: none;
    padding: 0;
    border-radius: 0;
    animation: none;
}

.chapter-dashboard-section-body > .chapter-dashboard-panel h4 {
    display: none; /* heading already in section header */
}

.cd-overview-label {
    font-size: .78rem;
    font-weight: 700;
    color: var(--cd-text-muted);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin: 14px 0 6px;
}

/* GDP slot placeholder */
.usd-gdp-placeholder {
    padding: 14px 16px;
    border-radius: 10px;
    background: var(--cd-panel-bg);
    color: var(--cd-text-muted);
    font-size: .9rem;
    font-style: italic;
    text-align: center;
}

/* ---- Flatten GDP card inside section-body (remove inner duplicate frame) ---- */
.chapter-dashboard-section-body .gdp-card {
    border: none;
    background: transparent;
    box-shadow: none;
    padding: 0;
    border-radius: 0;
}
/* Hide gdp-head: title already shown in section header number badge */
.chapter-dashboard-section-body .gdp-head {
    display: none;
}

@media (max-width: 520px) {
    .chapter-dashboard-section-header { padding: 8px 12px; }
    .chapter-dashboard-section-body { padding: 10px 12px; }
}