/* 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;
    }

        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;
}

.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;
}

.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;
}

.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;
    font-size: 0.88rem;
    color: #6E6E6E;
}

.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(n+3):nth-child(-n+6) {
    border-left: 2px solid rgba(255, 255, 255, 0.25);
}

.metrics-column-row th:nth-child(7) {
    border-left: 2px solid rgba(255, 255, 255, 0.25);
}

.metrics-column-row th:nth-child(13) {
    border-left: 2px solid rgba(255, 255, 255, 0.25);
}

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;
}

.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 {
    display: inline-flex;
    border: 1px solid #CCCCCC;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.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-table.is-technical .metrics-data-row.is-expanded {
    background-color: #E8F1FB;
}

.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 {
    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-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,
    .responsive-data-table tbody tr:not(.technical-panel-row) {
        display: block;
        margin: 12px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius);
        background: var(--color-surface);
        box-shadow: var(--shadow-sm);
    }

    .responsive-data-table tbody tr.technical-panel-row {
        display: block;
        margin: 0 12px 16px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius);
        background: var(--color-surface);
    }

    .responsive-data-table tbody tr.technical-panel-row td {
        display: block;
        width: 100%;
        box-sizing: border-box;
    }

    .responsive-data-table tbody tr.metrics-data-row td,
    .responsive-data-table tbody tr:not(.technical-panel-row) td {
        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,
    .responsive-data-table tbody tr:not(.technical-panel-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"],
    .responsive-data-table tbody tr:not(.technical-panel-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,
    .responsive-data-table tbody tr:not(.technical-panel-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 for technical details";
        display: block;
        padding: 8px 14px 12px;
        font-size: 0.8rem;
        color: var(--color-accent);
        text-align: center;
        border-top: 1px dashed var(--color-border);
    }

    .metrics-table.is-technical .metrics-data-row.is-expanded::after {
        content: "Tap to collapse";
    }
}

@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;
    }

    .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;
}