/* site.css — UnisonCore Benchmark
   Theme: clean lab / reference board
*/

:root {
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-soft: #dbeafe;
    --color-surface: #ffffff;
    --color-bg: #f1f5f9;
    --color-border: #e2e8f0;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.07);
    --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08);
    --max-content: 1240px;
}

/* ---------- Base ---------- */
html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 14px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

    header .logo {
        display: flex;
        align-items: center;
        font-weight: 600;
        font-size: 1.3rem;
        color: #333333;
    }

    .site-brand-link {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 0.65rem 1rem;
        text-decoration: none;
    }

    .site-brand-link img {
        height: 32px;
        display: block;
        flex-shrink: 0;
    }

    .site-brand-tagline {
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--color-accent);
        letter-spacing: 0.01em;
        line-height: 1.25;
    }

        header .logo img {
            height: 32px;
            margin-right: 10px;
        }

nav a,
.nav-link {
    color: var(--color-accent);
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

    nav a:hover,
    .nav-link:hover {
        color: var(--color-accent-hover);
    }

.nav-link-active {
    color: var(--color-text);
    font-weight: 600;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 2px;
}

/* ---------- Main Content ---------- */
main {
    padding: 32px 24px 48px;
    min-height: 70vh;
    max-width: var(--max-content);
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

/* ---------- Hero Section ---------- */
.hero {
    text-align: center;
    margin-bottom: 40px;
}

    .hero h1 {
        font-size: 2rem;
        color: var(--color-text);
        margin-bottom: 10px;
        font-weight: 700;
        letter-spacing: -0.02em;
    }

    .hero p {
        font-size: 1.1rem;
        color: #6E6E6E;
    }

.hero-compact {
    margin-bottom: 24px;
}

.hero-lead {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Home landing (leaderboard index) ---------- */
.home-landing-shell {
    max-width: 52rem;
    margin: 0 auto 0.5rem;
}

.home-landing-hero {
    width: 100%;
    margin-bottom: 1.75rem;
}

.home-brand-panel {
    width: 100%;
    box-sizing: border-box;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
}

.home-brand-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1.25rem;
}

.home-brand-logo-wrap {
    margin: 0;
    line-height: 0;
    flex-shrink: 0;
}

.home-brand-logo {
    display: block;
    height: 48px;
    width: auto;
}

.home-tagline {
    margin: 0;
    font-size: 1.12rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.01em;
    line-height: 1.35;
    flex: 1 1 12rem;
}

.home-narrative {
    margin: 0.35rem 0 0;
    max-width: none;
    font-size: 1.02rem;
    line-height: 1.65;
    color: #475569;
}

.home-section {
    margin-bottom: 1.75rem;
}

.home-landing-shell .home-section-title {
    text-align: left;
}

.home-landing-shell .home-section-lead {
    margin-left: 0;
}

.home-section-title {
    margin: 0 0 0.65rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.home-section-lead {
    margin: 0;
    max-width: 52rem;
    font-size: 1.02rem;
    line-height: 1.65;
    color: #475569;
}

.home-section-divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2rem 0;
}

.home-benchmark-hero {
    margin-bottom: 1.25rem;
}

.home-benchmark-hero h1 {
    font-size: 1.65rem;
}

.home-flow-diagram {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem 0.5rem;
    padding: 1.25rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.home-flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
}

.home-flow-step-roles {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.45rem;
}

.home-flow-node {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.35rem;
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius);
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1e3a8a;
    font-size: 0.88rem;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
}

.home-flow-node-primary {
    background: #dbeafe;
    border-color: #93c5fd;
    color: #1d4ed8;
}

.home-flow-node-accent {
    background: #f0fdf4;
    border-color: #86efac;
    color: #166534;
}

.home-flow-node-outcome {
    background: #f8fafc;
    border-color: #cbd5e1;
    color: #334155;
}

.home-flow-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    flex-shrink: 0;
}

.home-flow-arrow {
    width: 1.35rem;
    height: 1.35rem;
}

.home-diagram-audience {
    margin-top: 1.25rem;
    padding: 1rem 1.1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.home-diagram-audience-title {
    margin: 0 0 0.75rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.home-audience-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.65rem 1.25rem;
}

.home-audience-list li {
    position: relative;
    padding-left: 1.15rem;
    font-size: 0.98rem;
    line-height: 1.5;
    color: #475569;
}

.home-audience-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55rem;
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: var(--color-accent);
}

.home-cta {
    margin-bottom: 0.5rem;
}

.home-cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem 1.5rem;
    margin: 0.5rem 0 1.25rem;
    padding: 1.1rem 1.15rem;
    background: linear-gradient(180deg, #eff6ff 0%, #f8fafc 100%);
    border: 1px solid #bfdbfe;
    border-radius: var(--radius);
}

.home-cta-primary {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
}

.home-cta-secondary {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem 1rem;
}

.home-cta-note {
    margin: 0;
    font-size: 0.82rem;
    color: #64748b;
}

.home-cta-link {
    font-size: 0.92rem;
}

.home-cta-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1.25rem;
}

.home-key-concepts {
    margin: 0.25rem 0 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.home-key-concepts summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--color-text);
}

.home-key-concepts-list {
    margin: 0.85rem 0 0;
    display: grid;
    gap: 0.65rem 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.home-key-concepts-list dt {
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.home-key-concepts-list dd {
    margin: 0.2rem 0 0;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #64748b;
}

.value-props {
    list-style: none;
    padding: 0;
    margin: 0 0 28px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

@media (min-width: 900px) {
    .value-props {
        grid-template-columns: repeat(3, 1fr);
        column-gap: 32px;
        row-gap: 16px;
    }
}

.value-props li {
    background: #FFFFFF;
    border: 1px solid #E8E8E8;
    border-radius: 6px;
    padding: 16px 18px;
    font-size: 0.95rem;
    line-height: 1.5;
    color: #555555;
}

.value-props strong {
    color: #333333;
    display: block;
    margin-bottom: 6px;
}

.value-props li.value-props-audience {
    grid-column: 1 / -1;
}

.value-props li.value-props-audience .home-audience-list {
    margin-top: 0.35rem;
}

.score-legend {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-left: 4px solid #4A90E2;
    border-radius: 6px;
    padding: 16px 20px;
    margin-bottom: 24px;
}

.score-legend-title {
    margin: 0 0 8px 0;
    font-weight: 600;
    color: #333333;
}

.score-legend-lead {
    margin: 0 0 12px 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.score-legend-scale {
    list-style: none;
    padding: 0;
    margin: 0 0 12px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    font-size: 0.9rem;
}

.score-legend-scale li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.score-swatch {
    display: inline-block;
    min-width: 3rem;
    text-align: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
}

.score-legend-note {
    margin: 0 0 0.65rem 0;
    font-size: 0.88rem;
    color: #6E6E6E;
}

.score-legend-note:last-child {
    margin-bottom: 0;
}

.benchmark-freshness {
    margin: 8px 0 0 0;
    font-size: 0.88rem;
    color: #888888;
}

.table-scroll-hint {
    font-size: 0.85rem;
    color: #888888;
    margin: 0;
    padding: 10px 12px 0 12px;
}

.cohort-copy {
    padding: 24px 28px;
    line-height: 1.6;
}

.cohort-copy .section-title {
    margin-top: 28px;
}

.cohort-copy .section-title:first-child {
    margin-top: 0;
}

/* ---------- Buttons ---------- */
.btn-primary {
    background-color: var(--color-accent);
    color: #FFFFFF;
    border: none;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-sm);
}

    .btn-primary:hover {
        background-color: var(--color-accent-hover);
    }

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

    .btn-secondary:hover:not(:disabled) {
        background-color: #f1f5f9;
        border-color: #cbd5e1;
    }

    .btn-secondary:disabled {
        opacity: 0.45;
        cursor: not-allowed;
    }

/* ---------- Tables ---------- */
.table-container {
    overflow-x: auto;
    background-color: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th {
    background-color: var(--color-accent);
    color: #FFFFFF;
    text-align: left;
    padding: 10px 12px;
    font-weight: 600;
    font-size: 0.85rem;
}

.metrics-group-row th.th-group {
    text-align: center;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: #1e40af;
    padding: 8px 10px;
    border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.metrics-group-row th.th-group:last-child {
    border-right: none;
}

.metrics-column-row th {
    background: var(--color-accent);
    white-space: nowrap;
}

.metrics-group-row + .metrics-column-row th.th-group-capability,
.metrics-column-row th:nth-child(3),
.metrics-column-row th:nth-child(4),
.metrics-column-row th:nth-child(9),
.metrics-column-row th:nth-child(10),
.metrics-column-row th:nth-child(11),
.metrics-column-row th:nth-child(15) {
    border-left: 2px solid rgba(255, 255, 255, 0.25);
}

.metrics-page-shell {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metrics-page-head {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem 1.5rem;
    margin-bottom: 0.35rem;
}

.metrics-hero {
    flex: 1 1 420px;
    margin-bottom: 0;
    text-align: left;
}

.metrics-overview-lead {
    margin: 0.35rem 0 0.5rem;
    max-width: 42rem;
    font-size: 1.02rem;
    line-height: 1.6;
    color: #475569;
}

.metrics-overview-sub {
    margin: 0;
    max-width: 42rem;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.metrics-last-updated {
    margin: 0.35rem 0 0;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.metrics-last-updated time {
    font-weight: 600;
    color: var(--color-text);
}

.cohort-info {
    margin: 0.5rem 0 0.25rem;
    padding: 0.85rem 1rem;
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.92rem;
    line-height: 1.55;
    color: #475569;
}

.cohort-info strong {
    color: var(--color-text);
}

.metrics-glossary {
    margin: 0.75rem 0 0;
    padding: 0.85rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.metrics-glossary summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--color-text);
}

.metrics-glossary-list {
    margin: 0.85rem 0 0;
    display: grid;
    gap: 0.65rem 1.25rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.metrics-glossary-list dt {
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.metrics-glossary-list dd {
    margin: 0.2rem 0 0;
    font-size: 0.9rem;
    line-height: 1.5;
    color: #64748b;
}

.metrics-separator {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 1.5rem 0;
}

.metrics-guide {
    margin-bottom: 0.25rem;
}

.metrics-guide-heading {
    margin: 0 0 0.35rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
}

.metrics-guide-lead {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.metrics-guide-group {
    margin-bottom: 1.1rem;
}

.metrics-guide-group-title {
    margin: 0 0 0.55rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: #1e40af;
    letter-spacing: 0.01em;
}

.metrics-guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.65rem;
}

.metric-block {
    padding: 0.7rem 0.8rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.metric-block-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.metric-block-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.metric-description {
    font-size: 0.84rem;
    line-height: 1.45;
    color: #64748b;
}

.metric-cell-wrap {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.metric-trend {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.1rem;
    height: 1.1rem;
    font-size: 0.62rem;
    line-height: 1;
    border-radius: 999px;
    flex-shrink: 0;
}

.metric-trend-up {
    color: #166534;
    background: #dcfce7;
}

.metric-trend-down {
    color: #b91c1c;
    background: #fee2e2;
}

.metric-trend-stable {
    color: #64748b;
    background: #f1f5f9;
}

.metrics-trend-legend {
    margin: 0.65rem 0 0;
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.metrics-desc-row th.metrics-desc-cell {
    background: #1e3a8a;
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.68rem;
    font-weight: 500;
    line-height: 1.35;
    white-space: normal;
    vertical-align: top;
    padding: 6px 8px;
}

.metrics-controls form {
    max-width: none;
    margin: 0;
    padding: 0;
    background: transparent;
    box-shadow: none;
}

.metrics-column-row th:nth-child(7),
.metrics-column-row th:nth-child(13) {
    border-left: none;
}

td {
    padding: 10px 12px;
    border-bottom: 1px solid #E0E0E0;
}

tr:nth-child(even) {
    background-color: #F7F7F7;
}

/* ---------- Forms ---------- */
form {
    background-color: #FFFFFF;
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    max-width: 600px;
    margin: 0 auto;
}

    form label {
        display: block;
        margin-bottom: 6px;
        font-weight: 500;
        color: #333333;
    }

    form input[type="text"],
    form input[type="email"],
    form textarea {
        width: 100%;
        padding: 10px;
        border: 1px solid #CCCCCC;
        border-radius: 4px;
        font-size: 1rem;
        color: #333333;
        margin-bottom: 16px;
        transition: border-color 0.2s ease;
    }

        form input:focus,
        form textarea:focus {
            border-color: #4A90E2;
            outline: none;
        }

/* ---------- Footer ---------- */
footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    text-align: center;
    padding: 24px 20px;
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

footer a {
    color: var(--color-accent);
}

/* ---------- Utility ---------- */
.center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* ---------- Benchmark / Laman ---------- */
.section-title {
    color: var(--color-text);
    margin: 0 0 15px 0;
    padding: 20px 20px 0 20px;
    font-weight: 600;
    font-size: 1.15rem;
}

.table-section-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
    padding: 20px 20px 0 20px;
    margin-bottom: 15px;
}

.table-section-title {
    margin: 0;
    padding: 0;
    flex: 1 1 auto;
    min-width: 12rem;
}

.table-section-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.65rem 0.85rem;
    flex: 0 1 auto;
}

.table-section-actions-stacked {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.4rem;
}

.table-section-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.65rem 0.85rem;
}

.table-section-meta {
    width: 100%;
    display: flex;
    justify-content: flex-end;
}

.table-band-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.table-band-form label {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.table-band-form select {
    width: auto;
    min-width: 9.5rem;
}

.table-cohort-intro {
    margin: 0;
    padding: 0 1rem 0.85rem;
    border-bottom: 1px solid var(--color-border);
}

.table-legend-btn {
    white-space: nowrap;
}

.metrics-grid-last-update {
    margin: 0;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: right;
    line-height: 1.4;
}

.metrics-grid-last-update-label {
    margin-right: 0.35rem;
}

.metrics-grid-last-update time {
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

@media (max-width: 720px) {
    .metrics-grid-last-update {
        text-align: right;
    }

    .table-section-meta {
        justify-content: flex-end;
    }
}

.score-legend-modal {
    max-width: 36rem;
}

.score-legend-modal-body .score-legend {
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    border-left: none;
    border-radius: 0;
    box-shadow: none;
}

.controls-bar,
.controls-panel {
    margin-bottom: 20px;
}

.controls-panel {
    padding: 20px;
}

.controls-row {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: end;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 140px;
}

.control-grow {
    flex: 1.4 1 auto;
    min-width: 154px;
    max-width: 280px;
}

.control-actions {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.control-group label {
    font-weight: 600;
    color: #333333;
    font-size: 0.9rem;
}

.control-group select,
.control-group input[type="text"],
.band-form select {
    padding: 10px;
    border: 1px solid #CCCCCC;
    border-radius: 4px;
    font-size: 0.95rem;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
    height: 40px;
    margin: 0;
}

.band-form {
    background: transparent;
    box-shadow: none;
    padding: 0;
    max-width: none;
    margin: 0;
}

.metrics-controls {
    background: transparent;
    box-shadow: none;
    padding: 0;
    max-width: none;
    margin: 0 0 15px 0;
}

.metrics-controls label {
    margin-bottom: 0;
}

.metrics-controls input[type="text"] {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.view-toggle {
    display: inline-flex;
    border: 1px solid #CCCCCC;
    border-radius: 4px;
    overflow: hidden;
}

.view-toggle-btn {
    border: none;
    background: #FFFFFF;
    color: #333333;
    padding: 10px 16px;
    cursor: pointer;
}

.view-toggle-btn.is-active {
    background: var(--color-accent);
    color: #FFFFFF;
}

.cohort-shell {
    margin-bottom: 20px;
}

.cohort-toggle-row {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    justify-content: space-between;
    gap: 0.65rem 1rem;
    margin-bottom: 12px;
}

.cohort-toggle {
    display: inline-flex;
    border: 1px solid #CCCCCC;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0;
}

.cohort-metric-guide-btn {
    align-self: center;
    margin-left: auto;
    white-space: nowrap;
    padding: 10px 16px;
    font-size: 0.95rem;
}

.metrics-guide-modal {
    width: min(820px, 100%);
}

.metrics-guide-modal-body {
    padding-top: 0.35rem;
}

.metrics-guide-modal-body .metrics-guide-lead {
    margin-top: 0;
}

.metrics-trend-legend-modal {
    margin: 0 0 1rem;
}

.cohort-toggle-btn {
    display: inline-block;
    border: none;
    background: #FFFFFF;
    color: #333333;
    padding: 10px 16px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.95rem;
}

.cohort-toggle-btn.is-active {
    background: #4A90E2;
    color: #FFFFFF;
}

.cohort-intro {
    color: #555555;
    margin: 0 0 12px 0;
    max-width: 960px;
}

.vendor-reference-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 12px;
}

.vendor-reference-card {
    background: #F7F9FC;
    border: 1px solid #E0E6EF;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 0.9rem;
}

.vendor-reference-card strong {
    display: block;
    color: #333333;
}

.cohort-copy {
    padding: 0 20px 20px 20px;
    line-height: 1.6;
}

.cohort-copy ul {
    margin: 0 0 20px 20px;
}

.badge-exploratory {
    display: inline-block;
    margin-left: 6px;
    padding: 2px 6px;
    border-radius: 4px;
    background: #FFF4E5;
    color: #8A5A00;
    font-size: 0.75rem;
    vertical-align: middle;
}

.ml-10 {
    margin-left: 10px;
}

.laman-table {
    font-size: 0.9rem;
}

.metrics-table.is-technical .metrics-data-row {
    cursor: pointer;
}

.metrics-table.is-technical .metrics-data-row[data-has-technical="true"] td:first-child::after {
    content: " ⧉";
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 600;
}

.metrics-technical-modal {
    width: min(52rem, calc(100vw - 2rem));
    max-height: calc(100vh - 2.5rem);
}

.metrics-technical-modal-body {
    max-height: calc(100vh - 8rem);
    overflow: auto;
    padding-top: 0.25rem;
}

.metrics-technical-modal-body .technical-panel {
    padding: 0;
    background: transparent;
}

.metrics-technical-modal-body .technical-section {
    overflow-x: auto;
}

.metrics-tech-sources {
    display: none;
}

.metrics-view-hint {
    margin: 12px 0 0;
    padding: 10px 14px;
    background: var(--color-accent-soft);
    border: 1px solid #BFDBFE;
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.45;
}

.metrics-table.is-technical .metrics-data-row[data-has-technical="false"] {
    cursor: default;
    opacity: 0.85;
}

.metric-good {
    color: #2E7D32;
    font-weight: 600;
}

.metric-mid {
    color: #1565C0;
    font-weight: 600;
}

.metric-low {
    color: #EF6C00;
    font-weight: 600;
}

.rate-bad {
    color: #C62828;
    font-weight: 600;
}

.metric-na {
    color: #9E9E9E;
}

.badge-size,
.badge-pass,
.badge-fail,
.badge-safety,
.badge-safety-approved,
.badge-safety-conditional,
.badge-safety-blocked,
.badge-safety-untested {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.8rem;
    white-space: nowrap;
}

.badge-size {
    background: #E8F1FB;
    color: #1565C0;
}

.badge-pass {
    background: #E8F5E9;
    color: #2E7D32;
}

.badge-fail {
    background: #FFEBEE;
    color: #C62828;
}

.badge-safety {
    background: #F3E5F5;
    color: #6A1B9A;
    margin-top: 4px;
}

.badge-safety-approved {
    background: #E8F5E9;
    color: #2E7D32;
}

.badge-safety-conditional {
    background: #FFF3E0;
    color: #E65100;
}

.badge-safety-blocked {
    background: #FFEBEE;
    color: #B71C1C;
    border: 1px solid #EF9A9A;
    font-weight: 600;
}

.badge-safety-provider {
    background: #ECEFF1;
    color: #455A64;
    border: 1px solid #B0BEC5;
}

.badge-safety-untested {
    background: #F5F5F5;
    color: #757575;
}

.badge-cell .badge-safety-approved,
.badge-cell .badge-safety-conditional,
.badge-cell .badge-safety-blocked,
.badge-cell .badge-safety-provider,
.badge-cell .badge-safety-untested {
    margin-top: 4px;
}

.laman-table tbody tr.row-safety-blocked > td {
    background: #FFF8F8;
}

.safety-blocked-note {
    margin-top: 12px;
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.safety-blocked-note p {
    margin: 0 0 0.45rem 0;
}

.safety-blocked-note p:last-child {
    margin-bottom: 0;
}

.safety-blocked-detail,
.safety-blocked-inline-detail {
    display: block;
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.45;
}

.technical-panel .safety-blocked-detail {
    margin-top: 0;
    margin-bottom: 12px;
}

.badge-cell .safety-blocked-inline-detail {
    max-width: 220px;
}

.badge-cell {
    min-width: 130px;
}

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-warning {
    background: #FFF3E0;
    color: #E65100;
    border: 1px solid #FFCC80;
}

.alert-stale {
    background: #FFF8E1;
    color: #F57F17;
    border: 1px solid #FFE082;
}

.empty-state {
    padding: 24px;
    color: #6E6E6E;
}

.methodology-footer {
    font-size: 0.9rem;
    color: #6E6E6E;
}

.issue-grid {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.issue-card {
    flex: 1;
    min-width: 220px;
    background: #FFFFFF;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.issue-card h3 {
    color: #4A90E2;
    margin-top: 0;
}

.cta-text {
    font-size: 1.1rem;
    color: #333333;
}

.btn-link {
    color: #4A90E2;
    text-decoration: none;
}

.technical-panel {
    padding: 16px;
    background: #FAFAFA;
}

.technical-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 8px 16px;
    margin-bottom: 16px;
}

.technical-section {
    margin-top: 16px;
}

.technical-section h4 {
    margin: 0 0 8px 0;
    color: #333333;
}

.technical-table {
    width: 100%;
    font-size: 0.85rem;
}

.technical-gates {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.gate-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.gate-list li {
    padding: 6px 0;
    border-bottom: 1px solid #E0E0E0;
    font-size: 0.85rem;
}

.gate-pass {
    color: #2E7D32;
}

.gate-fail {
    color: #C62828;
}

/* ---------- Responsive data tables (card layout on narrow screens) ---------- */
@media (max-width: 900px) {
    .table-scroll-hint-desktop {
        display: none;
    }

    .responsive-data-table thead {
        display: none;
    }

    .responsive-data-table tbody tr.metrics-data-row {
        display: block;
        margin: 12px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius);
        background: var(--color-surface);
        box-shadow: var(--shadow-sm);
    }
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        gap: 12px;
        padding: 10px 14px;
        border-bottom: 1px solid #f1f5f9;
        text-align: right;
    }

    .responsive-data-table tbody tr.metrics-data-row td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--color-text-muted);
        text-align: left;
        flex: 0 0 42%;
    }

    .responsive-data-table tbody tr.metrics-data-row td[data-label="Model"] {
        font-weight: 600;
        color: var(--color-text);
        background: #f8fafc;
        border-radius: var(--radius) var(--radius) 0 0;
    }

    .responsive-data-table tbody tr.metrics-data-row td:last-child {
        border-bottom: none;
    }

    .responsive-data-table tr:nth-child(even) {
        background-color: transparent;
    }

    .responsive-data-table .badge-cell {
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .metrics-table.is-technical .metrics-data-row {
        cursor: pointer;
    }

    .metrics-table.is-technical .metrics-data-row::after {
        content: "Tap to open details panel";
        display: block;
        padding: 8px 14px 12px;
        font-size: 0.8rem;
        color: var(--color-accent);
        text-align: center;
        border-top: 1px dashed var(--color-border);
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 12px 20px;
    }

    nav {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 16px;
    }

    nav a,
    .nav-link {
        margin-left: 0;
    }

    main {
        padding: 24px 16px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .home-brand-logo {
        height: 40px;
    }

    .home-brand-panel {
        padding: 0.85rem 1rem;
    }

    .home-tagline {
        font-size: 1rem;
    }

    .home-narrative {
        font-size: 0.95rem;
    }

    .home-cta-row {
        flex-direction: column;
    }

    .home-flow-diagram {
        flex-direction: column;
        align-items: stretch;
    }

    .home-flow-connector {
        transform: rotate(90deg);
    }

    .home-flow-step-roles {
        flex-direction: column;
        align-items: stretch;
    }

    .home-flow-node {
        white-space: normal;
    }

    .score-legend-scale {
        flex-direction: column;
        gap: 8px;
    }

    .demo-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Private demo (Phase 0 offline replay) ---------- */
.demo-shell {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.demo-banner {
    background: #FFF8E1;
    border: 1px solid #FFE082;
    border-radius: var(--radius);
    padding: 12px 16px;
    color: var(--color-text);
    line-height: 1.5;
}

.demo-live-hint {
    background: #fef9c3;
    border: 1px solid #fde047;
    border-radius: var(--radius);
    padding: 12px 16px;
    color: #713f12;
    font-size: 0.92rem;
    line-height: 1.45;
}

.demo-live-hint-warn {
    display: block;
    margin-top: 0.5rem;
    color: #b91c1c;
    font-weight: 600;
}

.demo-meta {
    font-size: 0.92rem;
    color: var(--color-text-muted);
}

.demo-pipeline {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.demo-pipeline-chip {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: capitalize;
}

.demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.demo-workspace {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) minmax(280px, 1.4fr) minmax(220px, 0.85fr);
    gap: 20px;
    align-items: start;
}

.demo-workspace-prompt {
    grid-column: 1;
}

.demo-workspace-timeline {
    grid-column: 2;
}

.demo-workspace-meta {
    grid-column: 3;
}

.demo-timeline-lead {
    margin: -4px 0 14px;
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.demo-timeline-host {
    min-height: 280px;
    max-height: 560px;
    overflow-y: auto;
    padding-right: 4px;
}

.demo-timeline-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.demo-timeline-item {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 12px;
    padding-bottom: 18px;
    position: relative;
}

.demo-timeline-item:last-child {
    padding-bottom: 0;
}

.demo-timeline-rail {
    display: flex;
    justify-content: center;
    position: relative;
}

.demo-timeline-rail::after {
    content: "";
    position: absolute;
    top: 22px;
    bottom: -6px;
    width: 2px;
    background: #e2e8f0;
    left: 50%;
    transform: translateX(-50%);
}

.demo-timeline-item:last-child .demo-timeline-rail::after {
    display: none;
}

.demo-timeline-dot {
    width: 14px;
    height: 14px;
    border-radius: 999px;
    border: 2px solid #cbd5e1;
    background: #fff;
    margin-top: 4px;
    z-index: 1;
    transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.demo-timeline-item.is-pending .demo-timeline-content {
    opacity: 0.55;
}

.demo-timeline-item.is-active .demo-timeline-dot {
    border-color: var(--color-accent);
    background: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.demo-timeline-item.is-active .demo-timeline-content {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent-soft);
}

.demo-timeline-item.is-complete .demo-timeline-dot {
    border-color: #16a34a;
    background: #16a34a;
}

.demo-timeline-content {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 12px 14px;
    background: #f8fafc;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
}

.demo-timeline-title {
    margin: 0 0 8px;
    font-size: 0.98rem;
    color: var(--color-text);
}

.demo-timeline-narrative {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text);
}

.demo-timeline-details {
    margin: 10px 0 0 18px;
    padding: 0;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.demo-meta-list {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.demo-meta-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.demo-meta-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.demo-meta-row dt {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.demo-meta-row dd {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-text);
    word-break: break-word;
}

.demo-answer-card {
    margin-top: 20px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 18px 20px 22px;
}

.demo-answer-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.demo-answer-card-header .section-title {
    margin: 0;
}

.demo-answer-card-body {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    padding: 16px 18px;
    min-height: 88px;
}

.demo-session-footer {
    margin-top: 24px;
    padding: 14px 16px;
    border-radius: var(--radius);
    background: var(--color-accent-soft);
    border: 1px solid rgba(37, 99, 235, 0.12);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.demo-session-footer p {
    margin: 0;
    line-height: 1.55;
}

.demo-session-footer a {
    color: var(--color-accent);
    font-weight: 600;
}

@media (max-width: 1080px) {
    .demo-workspace {
        grid-template-columns: 1fr 1fr;
    }

    .demo-workspace-prompt {
        grid-column: 1 / -1;
    }

    .demo-workspace-timeline {
        grid-column: 1;
    }

    .demo-workspace-meta {
        grid-column: 2;
    }
}

@media (max-width: 720px) {
    .demo-workspace {
        grid-template-columns: 1fr;
    }

    .demo-workspace-prompt,
    .demo-workspace-timeline,
    .demo-workspace-meta {
        grid-column: 1;
    }

    .demo-timeline-host {
        max-height: 420px;
    }
}

.demo-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 16px 18px 20px;
}

.demo-prompt {
    width: 100%;
    box-sizing: border-box;
    min-height: 130px;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    resize: vertical;
}

.demo-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.demo-status {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.demo-status.is-error {
    color: #C62828;
}

.demo-trace {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 520px;
    overflow-y: auto;
}

.demo-trace-step {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 12px 14px;
    background: #f8fafc;
}

.demo-trace-step h3 {
    margin: 0 0 8px;
    font-size: 1rem;
    color: var(--color-text);
}

.demo-step-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 6px;
    border-radius: 999px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.8rem;
}

.demo-trace-details {
    margin: 8px 0 0 18px;
    padding: 0;
    color: var(--color-text-muted);
    font-size: 0.88rem;
}

.demo-result-panel {
    margin-top: 4px;
}

.demo-result-text {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--color-text);
}

.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;
}

/* Engineer lab (/Lab/{token}) — WEB-ADR-0007 */
.lab-banner {
    border-left: 4px solid #7c3aed;
}

/* Engineer Lab v2 layout — WEB-ADR-0009 W9a */
.lab-shell-v2 {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 1320px;
    margin: 0 auto;
}

.lab-full-testing-banner {
    margin: 0;
    padding: 0.85rem 1rem;
    border: 1px solid #93c5fd;
    border-radius: var(--radius);
    background: #eff6ff;
    color: #1e3a8a;
    font-size: 0.92rem;
    line-height: 1.5;
}

.lab-full-testing-banner strong {
    color: #1d4ed8;
}

.lab-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem 1.5rem;
    padding: 0.25rem 0 0.5rem;
}

.lab-page-header-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.lab-page-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(145deg, #2563eb, #1d4ed8);
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
    position: relative;
}

.lab-page-logo::after {
    content: "";
    position: absolute;
    inset: 11px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.92);
}

.lab-page-header-titles {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 0.75rem;
}

.lab-page-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.lab-live-pill {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    background: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.lab-live-pill.is-offline {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #475569;
}

.lab-page-header-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.65rem;
    min-width: min(100%, 520px);
}

.lab-invite-expiry {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.15rem;
    padding: 0.45rem 0.75rem;
    border-radius: var(--radius);
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.lab-invite-expiry-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #64748b;
}

.lab-invite-expiry-value {
    font-size: 0.88rem;
    font-weight: 600;
    color: #0f172a;
}

.lab-header-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.4rem;
}

.lab-layout-v2 {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(340px, 1.15fr);
    gap: 1.25rem;
    align-items: stretch;
}

.lab-layout-left {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    min-width: 0;
    min-height: 0;
    height: 100%;
}

.lab-panel-output {
    grid-column: 1 / -1;
    margin-top: 0;
}

.lab-panel {
    margin: 0;
}

.lab-panel-config {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    flex: 1 1 auto;
    min-height: 0;
    height: 100%;
}

.lab-prompt-v2 {
    flex: 1 1 auto;
    min-height: 148px;
    resize: vertical;
}

.lab-experimental-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.lab-experimental-card {
    position: relative;
    padding: 0.85rem 0.9rem 2.6rem;
    border-radius: var(--radius);
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.lab-experimental-card-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    margin-bottom: 0.35rem;
}

.lab-experimental-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: #0f172a;
}

.lab-experimental-pill {
    display: inline-block;
    padding: 0.12rem 0.45rem;
    border-radius: 999px;
    background: #ffedd5;
    border: 1px solid #fdba74;
    color: #c2410c;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.lab-experimental-desc {
    margin: 0;
    font-size: 0.8rem;
    line-height: 1.45;
    color: #64748b;
}

.lab-switch {
    position: absolute;
    right: 0.85rem;
    bottom: 0.75rem;
    display: inline-flex;
    cursor: pointer;
}

.lab-switch input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.lab-switch-track {
    width: 44px;
    height: 24px;
    border-radius: 999px;
    background: #cbd5e1;
    position: relative;
    transition: background 0.2s ease;
}

.lab-switch-track::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
    transition: transform 0.2s ease;
}

.lab-switch input:checked + .lab-switch-track {
    background: #2563eb;
}

.lab-switch input:checked + .lab-switch-track::after {
    transform: translateX(20px);
}

.lab-switch input:disabled + .lab-switch-track {
    opacity: 0.55;
    cursor: not-allowed;
}

.lab-run-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 0.75rem;
}

.lab-routing-label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1 1 180px;
    min-width: 140px;
    font-size: 0.88rem;
    font-weight: 600;
    color: #475569;
}

.lab-routing-select {
    width: 100%;
    padding: 0.55rem 0.65rem;
    border-radius: var(--radius);
    border: 1px solid #cbd5e1;
    background: #fff;
    font-size: 0.92rem;
    font-weight: 600;
    color: #0f172a;
}

.lab-run-btn {
    flex: 0 0 auto;
    min-width: 148px;
    padding: 0.62rem 1.15rem;
}

.lab-run-status {
    display: block;
    min-height: 1.25rem;
    margin-top: -0.35rem;
}

.lab-specialists-strip {
    margin-top: auto;
    padding-top: 0.35rem;
    border-top: 1px solid #e2e8f0;
}

.lab-specialists-strip-head {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.lab-specialists-icon {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    background: #dbeafe;
    border: 1px solid #93c5fd;
    flex-shrink: 0;
}

.lab-specialists-strip-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #334155;
}

.lab-specialists-add {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    margin-left: 0.15rem;
}

.lab-specialists-strip-lead {
    margin: 0.35rem 0 0.5rem;
    font-size: 0.78rem;
    color: #64748b;
}

.lab-specialist-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    min-height: 0;
}

.lab-specialist-chip {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    padding: 0;
    border: 2px solid #93c5fd;
    border-radius: 12px;
    background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.12s ease;
}

.lab-specialist-chip:hover:not(:disabled) {
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.22);
    transform: translateY(-1px);
}

.lab-specialist-chip:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.lab-specialist-chip-avatar {
    width: 28px;
    height: 28px;
    background-color: #3b82f6;
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z'/%3E%3C/svg%3E");
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z'/%3E%3C/svg%3E");
    -webkit-mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
}

.lab-specialist-chip-number {
    position: absolute;
    right: -6px;
    bottom: -6px;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 999px;
    background: #1d4ed8;
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 20px;
    text-align: center;
    border: 2px solid #fff;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.2);
}

.lab-specialist-modal-body {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    min-width: 0;
    overflow-x: hidden;
}

.lab-specialist-modal-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.88rem;
    color: #334155;
    min-width: 0;
    max-width: 100%;
}

.lab-specialist-modal-field[hidden] {
    display: none !important;
}

.lab-specialist-modal-field span {
    font-weight: 600;
}

.lab-spec-modal-input,
.lab-spec-modal-textarea,
.lab-spec-modal-select {
    display: block;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0.5rem 0.65rem;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius);
    font: inherit;
    color: #0f172a;
    background: #fff;
}

.lab-spec-modal-textarea {
    resize: vertical;
    min-height: 72px;
}

.lab-specialist-modal-error {
    margin: 0;
    padding: 0.55rem 0.65rem;
    border-radius: var(--radius);
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    font-size: 0.86rem;
}

.lab-specialist-modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 14px 18px 18px;
    border-top: 1px solid var(--color-border);
    min-width: 0;
}

.lab-specialists-strip.is-specialists-mode {
    border-top-color: #93c5fd;
    background: linear-gradient(180deg, rgba(219, 234, 254, 0.35), transparent 48px);
    margin: 0 -0.25rem;
    padding-left: 0.25rem;
    padding-right: 0.25rem;
    border-radius: var(--radius);
}

.lab-stage-summary.is-warning,
.lab-stage-bullets li.is-warning {
    color: #b45309;
}

.lab-panel-output .demo-answer-card-header {
    margin-bottom: 0.65rem;
}

.lab-output-body {
    min-height: 120px;
}

.lab-panel-trace {
    display: flex;
    flex-direction: column;
    min-height: clamp(520px, 72vh, 780px);
    height: 100%;
    max-height: 780px;
    overflow: hidden;
}

.lab-trace-suppression {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    margin-top: 0.75rem;
    padding: 0.75rem 0.85rem;
    border-radius: var(--radius);
    background: #fff7ed;
    border: 1px solid #fed7aa;
    color: #9a3412;
    font-size: 0.86rem;
    line-height: 1.45;
    flex-shrink: 0;
}

.lab-trace-suppression-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fb923c;
    flex-shrink: 0;
    margin-top: 1px;
}

.lab-session-note {
    margin: 0;
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.45;
}

.lab-cost-badge {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.25);
    color: #5b21b6;
    font-size: 0.88rem;
    font-weight: 600;
}

.lab-workspace {
    grid-template-columns: 1fr 1.4fr 280px;
}

/* legacy 3-column lab workspace — superseded by lab-layout-v2 */

.lab-workspace-controls {
    grid-column: 1;
}

.lab-config-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.35rem;
}

.lab-config-header .section-title {
    margin-bottom: 0;
}

.lab-maxdepth-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-muted, #475569);
}

.lab-maxdepth-select {
    min-width: 4.5rem;
    padding: 0.35rem 0.55rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border, #cbd5e1);
    background: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.lab-maxdepth-hint {
    margin: 0 0 0.75rem;
    font-size: 0.82rem;
    color: var(--color-text-muted, #64748b);
}

.lab-meta-chip.is-warning {
    background: #fff7ed;
    border-color: #fdba74;
    color: #c2410c;
}

.lab-maxdepth-warning {
    margin-top: -0.35rem;
}

.lab-meta-chip.is-neutral {
    background: rgba(100, 116, 139, 0.12);
    border-color: rgba(100, 116, 139, 0.25);
    color: #334155;
}

.lab-workspace-trace {
    grid-column: 2;
    display: flex;
    flex-direction: column;
    height: clamp(480px, 62vh, 720px);
    max-height: 720px;
    overflow: hidden;
}

.lab-workspace-trace .section-title,
.lab-workspace-trace .demo-timeline-lead {
    flex-shrink: 0;
}

.lab-copy-trace-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.lab-copy-toast {
    position: absolute;
    left: calc(100% + 10px);
    top: 50%;
    transform: translateY(-50%);
    padding: 4px 10px;
    border-radius: var(--radius);
    background: var(--color-text);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.45s ease;
}

.lab-copy-toast.is-visible {
    opacity: 1;
}

.lab-trace-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.35rem;
}

.lab-trace-header .section-title {
    margin-bottom: 0;
}

.lab-stages-host {
    flex: 1 1 auto;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 4px;
    scrollbar-gutter: stable;
}

.lab-stages-host .lab-stage {
    margin-bottom: 8px;
}

.lab-stages-host .lab-stage:last-child {
    margin-bottom: 0;
}

.lab-toggle-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin: 14px 0;
}

.lab-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    cursor: pointer;
}

.lab-toggle-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.lab-run-options {
    margin: 16px 0 0;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #f8fafc;
}

.lab-run-options-legend {
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0 6px;
}

.lab-run-options-lead {
    margin: 0 0 12px;
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.lab-run-options-toggles {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lab-toggle-row-compact {
    margin: 8px 0;
    align-items: flex-start;
}

.lab-toggle-row-compact .lab-toggle-hint {
    flex: 1 1 100%;
    margin-left: 28px;
}

.lab-meta-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.lab-meta-chip {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--color-border);
    background: #f1f5f9;
    color: var(--color-text-muted);
}

.lab-meta-chip.is-on {
    background: #e8f5e9;
    border-color: #a5d6a7;
    color: #2e7d32;
}

.lab-meta-chip.is-off {
    background: #f1f5f9;
    border-color: #cfd8dc;
    color: #546e7a;
}

.lab-specialists-details {
    margin-top: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 10px 14px;
    background: #fafbfc;
}

.lab-specialists-summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.92rem;
}

.lab-specialists-body {
    margin-top: 12px;
}

.lab-specialists {
    margin: 12px 0 4px;
    padding: 12px 14px;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    background: #fafafa;
}

.lab-specialists-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}

.lab-subheading {
    margin: 0;
    font-size: 0.95rem;
}

.lab-specialists-lead {
    margin: 0 0 10px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.lab-specialist-row {
    display: grid;
    grid-template-columns: 1fr auto;
    column-gap: 12px;
    row-gap: 10px;
    align-items: end;
    margin-bottom: 10px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
}

.lab-specialist-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-text-muted);
    min-width: 0;
}

.lab-specialist-field-name {
    grid-column: 1;
}

.lab-specialist-field-role {
    grid-column: 1 / -1;
}

.lab-specialist-field-mode {
    grid-column: 1;
    max-width: 180px;
}

.lab-spec-remove {
    grid-column: 2;
    grid-row: 1;
    align-self: end;
    white-space: nowrap;
}

.lab-specialist-field input,
.lab-specialist-field select {
    width: 100%;
    box-sizing: border-box;
    font-size: 0.9rem;
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-sans);
}

.lab-output-quality-notice {
    border: 1px solid rgba(214, 158, 46, 0.45);
    background: rgba(214, 158, 46, 0.08);
    border-radius: 10px;
    padding: 1rem 1.1rem;
}

.lab-output-quality-title {
    margin: 0 0 0.65rem;
    font-weight: 600;
    color: #b7791f;
}

.lab-output-quality-hint {
    margin: 0 0 0.75rem;
    font-size: 0.92rem;
    color: #744210;
}

.lab-run-options-warning {
    margin: 0.35rem 0 0.15rem;
    padding: 0.65rem 0.85rem;
    border: 1px solid rgba(214, 158, 46, 0.45);
    border-radius: 8px;
    background: rgba(214, 158, 46, 0.08);
    font-size: 0.92rem;
    color: #744210;
    line-height: 1.45;
}

.lab-stage {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    overflow: visible;
    flex-shrink: 0;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.lab-stage.is-collapsed {
    overflow: hidden;
}

.lab-stage.is-expanded {
    border-color: rgba(124, 58, 237, 0.28);
    box-shadow: 0 1px 3px rgba(124, 58, 237, 0.08);
}

.lab-stage-header {
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 48px;
    padding: 10px 16px;
    border: none;
    background: #f8fafc;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    line-height: 1.3;
}

.lab-stage-header:hover {
    background: #f1f5f9;
}

.lab-stage.is-expanded .lab-stage-header {
    background: #f5f3ff;
    border-bottom: 1px solid var(--color-border);
}

.lab-stage-number {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    background: #7c3aed;
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
}

.lab-stage-title {
    flex: 1 1 auto;
    min-width: 0;
    font-weight: 600;
    color: var(--color-text);
}

.lab-stage-chevron {
    flex: 0 0 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    color: var(--color-text-muted);
}

.lab-stage-chevron::after {
    content: '';
    display: block;
    width: 0.42rem;
    height: 0.42rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.18s ease;
}

.lab-stage-header[aria-expanded="false"] .lab-stage-chevron::after {
    transform: rotate(-45deg);
}

.lab-stage-panel {
    padding: 14px 16px 18px;
    padding-left: calc(16px + 1.75rem + 12px);
    background: #fff;
}

.lab-stage-panel[hidden] {
    display: none !important;
}

.lab-stage-summary {
    margin: 12px 0 8px;
    color: var(--color-text);
    line-height: 1.5;
}

.lab-stage-bullets,
.lab-stage-details {
    margin: 8px 0;
    padding-left: 18px;
    color: var(--color-text-muted);
    font-size: 0.88rem;
}

.lab-mono-block {
    margin-top: 10px;
}

.lab-mono-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.lab-mono-content {
    margin: 0;
    padding: 10px 12px;
    border-radius: var(--radius);
    background: #0f172a;
    color: #e2e8f0;
    font-size: 0.78rem;
    line-height: 1.45;
    overflow-x: auto;
    white-space: pre-wrap;
}

.lab-council-open-btn {
    margin-top: 12px;
}

.lab-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(15, 23, 42, 0.55);
}

.lab-modal-backdrop[hidden] {
    display: none !important;
}

body.lab-modal-open {
    overflow: hidden;
}

.lab-modal {
    width: min(720px, 100%);
    max-height: min(85vh, 900px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.lab-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px;
    border-bottom: 1px solid var(--color-border);
}

.lab-modal-header h2 {
    margin: 0;
    font-size: 1.1rem;
}

.lab-modal-close {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-muted);
}

.lab-modal-body {
    padding: 16px 18px 22px;
    overflow-x: hidden;
    overflow-y: auto;
}

.lab-specialist-modal .lab-modal-body {
    min-width: 0;
}

.lab-council-section {
    margin-bottom: 18px;
}

.lab-council-section h3 {
    margin: 0 0 8px;
    font-size: 0.95rem;
}

.lab-council-section ul {
    margin: 0;
    padding-left: 18px;
    color: var(--color-text);
    line-height: 1.55;
}

@media (max-width: 1080px) {
    .lab-layout-v2 {
        grid-template-columns: 1fr;
    }

    .lab-layout-left {
        height: auto;
    }

    .lab-panel-config {
        height: auto;
    }

    .lab-panel-trace {
        min-height: clamp(420px, 55vh, 640px);
        height: clamp(420px, 55vh, 640px);
    }

    .lab-page-header-meta {
        align-items: flex-start;
    }

    .lab-invite-expiry {
        align-items: flex-start;
    }

    .lab-header-chips {
        justify-content: flex-start;
    }

    .lab-workspace {
        grid-template-columns: 1fr 1fr;
    }

    .lab-workspace-controls {
        grid-column: 1 / -1;
    }

    .lab-workspace-trace {
        grid-column: 1;
        height: clamp(420px, 55vh, 640px);
    }
}

@media (max-width: 720px) {
    .lab-experimental-grid {
        grid-template-columns: 1fr;
    }

    .lab-run-row {
        flex-direction: column;
        align-items: stretch;
    }

    .lab-run-btn {
        width: 100%;
    }

    .lab-panel-trace {
        height: clamp(360px, 50vh, 560px);
    }

    .lab-stage-panel {
        padding-left: 16px;
    }
}