body {
    font-family: 'Segoe UI', system-ui, sans-serif;
}

.card {
    transition: border-color 0.2s;
}

.card:hover {
    border-color: #ffc107 !important;
}

.font-monospace {
    font-family: 'Consolas', 'Courier New', monospace;
}

/* Botón copiar feedback */
button[onclick^="copyVal"]:active {
    background: #ffc107;
    color: #000;
}