body {
    font-family: Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    color: #0f172a;
    transition: background 0.2s ease, color 0.2s ease;
}

:root[data-theme="dark"] body {
    background: linear-gradient(135deg, #020617 0%, #111827 100%);
    color: #f8fafc;
}

/* ── Shared placeholder for future/unimplemented UI ── */
.aegis-placeholder {
    opacity: 0.35;
    filter: grayscale(0.6);
}