.uwa-mermas-box {
    max-width: 420px;
    margin: auto;
    padding: 24px;
    border-radius: 16px;
    background: #ffffff;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    font-family: system-ui, sans-serif;
}

.uwa-mermas-box h2 {
    text-align: center;
    margin-bottom: 20px;
}

.uwa-mermas-box select,
.uwa-mermas-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border-radius: 10px;
    border: 1px solid #ddd;
    font-size: 16px;
}

.uwa-mermas-box .resultado {
    margin-top: 16px;
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    color: #10B557;
}