:root {
    --diag-background: #f4f7fb;
    --diag-surface: #ffffff;
    --diag-foreground: #172033;
    --diag-muted: #526077;
    --diag-border: #dce3ec;
    --diag-primary: #075985;
    --diag-primary-hover: #0c4a6e;
    --diag-success: #166534;
    --diag-success-bg: #dcfce7;
    --diag-warning: #854d0e;
    --diag-warning-bg: #fef9c3;
    --diag-error: #b91c1c;
    --diag-error-bg: #fee2e2;
    --diag-pending: #475569;
    --diag-pending-bg: #e2e8f0;
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

.diagnostics-page {
    min-height: 100dvh;
    padding: 32px 16px;
    background: var(--diag-background);
    color: var(--diag-foreground);
    font-family: Roboto, Arial, sans-serif;
    line-height: 1.5;
}

.diagnostics-shell {
    width: min(880px, 100%);
    margin: 0 auto;
}

.diagnostics-header,
.diagnostics-summary,
.diagnostics-tests,
.diagnostics-actions,
.diagnostics-privacy,
.diagnostics-copy-status {
    width: 100%;
}

.diagnostics-header {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 32px;
    align-items: start;
    margin-bottom: 24px;
}

.diagnostics-brand {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    padding: 8px 12px;
    border: 1px solid var(--diag-border);
    border-radius: 8px;
    background: #ffffff;
}

.diagnostics-brand:focus-visible,
.diagnostics-button:focus-visible {
    outline: 3px solid var(--diag-primary);
    outline-offset: 3px;
}

.diagnostics-brand img {
    display: block;
    width: 168px;
    height: auto;
}

.diagnostics-heading h1 {
    margin: 0;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
}

.diagnostics-heading > p:last-child {
    max-width: 66ch;
    margin: 12px 0 0;
    color: var(--diag-muted);
}

.diagnostics-eyebrow,
.diagnostics-label {
    margin: 0 0 6px;
    color: var(--diag-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.diagnostics-summary {
    display: grid;
    grid-template-columns: 1fr minmax(180px, 280px);
    gap: 24px;
    align-items: center;
    padding: 24px;
    border: 1px solid var(--diag-border);
    border-radius: 16px;
    background: var(--diag-surface);
    box-shadow: 0 10px 30px rgb(15 23 42 / 7%);
}

.diagnostics-summary-value {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.diagnostics-run-id {
    margin: 6px 0 0;
    color: var(--diag-muted);
    font-size: 0.875rem;
}

.diagnostics-run-id code {
    color: var(--diag-foreground);
    font-variant-numeric: tabular-nums;
    overflow-wrap: anywhere;
}

.diagnostics-summary progress {
    width: 100%;
    height: 12px;
    accent-color: var(--diag-primary);
}

.diagnostics-summary progress::-webkit-progress-bar {
    border-radius: 999px;
    background: var(--diag-pending-bg);
}

.diagnostics-summary progress::-webkit-progress-value {
    border-radius: 999px;
    background: var(--diag-primary);
}

.diagnostics-summary progress::-moz-progress-bar {
    border-radius: 999px;
    background: var(--diag-primary);
}

.diagnostics-tests {
    display: grid;
    gap: 12px;
    margin: 20px 0;
    padding: 0;
    list-style: none;
}

.diagnostics-test {
    display: grid;
    grid-template-columns: 112px 1fr;
    gap: 18px;
    align-items: center;
    min-height: 88px;
    padding: 16px 20px;
    border: 1px solid var(--diag-border);
    border-radius: 12px;
    background: var(--diag-surface);
}

.diagnostics-test h2 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.4;
}

.diagnostics-test p {
    margin: 4px 0 0;
    color: var(--diag-muted);
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

.diagnostics-status {
    display: inline-flex;
    min-height: 32px;
    align-items: center;
    justify-content: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--diag-pending-bg);
    color: var(--diag-pending);
    font-size: 0.78rem;
    font-weight: 700;
    text-align: center;
}

.diagnostics-test[data-state="running"] .diagnostics-status {
    background: #e0f2fe;
    color: #075985;
}

.diagnostics-test[data-state="success"] .diagnostics-status {
    background: var(--diag-success-bg);
    color: var(--diag-success);
}

.diagnostics-test[data-state="warning"] .diagnostics-status {
    background: var(--diag-warning-bg);
    color: var(--diag-warning);
}

.diagnostics-test[data-state="error"] .diagnostics-status {
    background: var(--diag-error-bg);
    color: var(--diag-error);
}

.diagnostics-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.diagnostics-button {
    display: inline-flex;
    min-height: 48px;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border: 1px solid #aab6c5;
    border-radius: 8px;
    background: var(--diag-surface);
    color: var(--diag-foreground);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.diagnostics-button:hover:not(:disabled) {
    border-color: var(--diag-primary);
    background: #f0f9ff;
}

.diagnostics-button-primary {
    border-color: var(--diag-primary);
    background: var(--diag-primary);
    color: #ffffff;
}

.diagnostics-button-primary:hover:not(:disabled) {
    border-color: var(--diag-primary-hover);
    background: var(--diag-primary-hover);
}

.diagnostics-button:disabled {
    cursor: not-allowed;
    opacity: 0.48;
}

.diagnostics-button-link {
    margin-left: auto;
}

.diagnostics-privacy {
    margin: 22px 0 0;
    color: var(--diag-muted);
    font-size: 0.85rem;
}

.diagnostics-copy-status {
    min-height: 24px;
    margin: 8px 0 0;
    color: var(--diag-success);
    font-weight: 600;
}

@media (max-width: 640px) {
    .diagnostics-page {
        padding: 20px 12px;
    }

    .diagnostics-header,
    .diagnostics-summary {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .diagnostics-brand img {
        width: 144px;
    }

    .diagnostics-test {
        grid-template-columns: 1fr;
        gap: 10px;
        min-height: 0;
    }

    .diagnostics-status {
        width: fit-content;
    }

    .diagnostics-actions,
    .diagnostics-button {
        width: 100%;
    }

    .diagnostics-button-link {
        margin-left: 0;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --diag-background: #0f172a;
        --diag-surface: #172033;
        --diag-foreground: #f8fafc;
        --diag-muted: #cbd5e1;
        --diag-border: #334155;
        --diag-primary: #38bdf8;
        --diag-primary-hover: #7dd3fc;
        --diag-pending: #e2e8f0;
        --diag-pending-bg: #334155;
        color-scheme: dark;
    }

    .diagnostics-button {
        border-color: #64748b;
        background: var(--diag-surface);
        color: var(--diag-foreground);
    }

    .diagnostics-button:hover:not(:disabled) {
        background: #1e293b;
    }

    .diagnostics-button-primary {
        border-color: #0369a1;
        background: #0369a1;
        color: #ffffff;
    }
}

@media (prefers-reduced-motion: reduce) {
    .diagnostics-button {
        transition: none;
    }
}