.diag-page {
    margin: 0;
    min-height: 100vh;
    background: #020617;
    color: #e2e8f0;
    font-family: Inter, system-ui, sans-serif;
}

.diag-app {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.25rem 1.1rem 3rem;
}

.diag-header h1 {
    margin: 0.35rem 0 0.25rem;
    font-size: 1.35rem;
}

.diag-sub {
    margin: 0;
    font-size: 0.72rem;
    color: #64748b;
    letter-spacing: 0.04em;
}

.diag-back {
    color: #38bdf8;
    text-decoration: none;
    font-size: 0.8rem;
}

.diag-msg {
    margin: 1rem 0;
    padding: 0.75rem;
    border-radius: 8px;
    background: rgba(127, 29, 29, 0.35);
    color: #fecaca;
    font-size: 0.85rem;
}

.diag-grid {
    display: grid;
    gap: 0.65rem;
    margin-top: 1.25rem;
}

.diag-row {
    display: grid;
    grid-template-columns: 11rem 1fr;
    gap: 0.75rem;
    padding: 0.7rem 0.85rem;
    border-radius: 8px;
    border: 1px solid #1e293b;
    background: rgba(15, 23, 42, 0.75);
    font-size: 0.85rem;
}

.diag-row dt {
    margin: 0;
    color: #94a3b8;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.diag-row dd {
    margin: 0;
    color: #f1f5f9;
    word-break: break-word;
}

.diag-ok { color: #86efac; }
.diag-warn { color: #fde68a; }
.diag-bad { color: #fca5a5; }

.diag-row--section {
    margin-top: 0.5rem;
    background: transparent;
    border-color: transparent;
    padding-left: 0.15rem;
}

.diag-row--section dt {
    color: #38bdf8;
    letter-spacing: 0.12em;
}

@media (max-width: 520px) {
    .diag-row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}