.opt-container {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background: linear-gradient(145deg, #0f172a, #1e293b);
    color: #fff;
    border-radius: 12px;
    font-family: Arial;
}

.opt-container h2 {
    text-align: center;
    margin-bottom: 20px;
}

.opt-inputs {
    display: flex;
    gap: 10px;
}

.opt-inputs input {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    border: none;
}

.opt-buttons {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.opt-buttons button {
    padding: 10px 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: #2563eb;
    color: #fff;
    transition: 0.3s;
}

.opt-buttons button:hover {
    background: #1d4ed8;
}

#opt_results {
    margin-top: 20px;
    background: #111827;
    padding: 15px;
    border-radius: 10px;
}

.result-row {
    padding: 8px;
    border-bottom: 1px solid #374151;
}

.status-online { color: #22c55e; }
.status-slow { color: #facc15; }
.status-offline { color: #ef4444; }

.card {
    background: #0b1220;
    padding: 10px;
    margin-top: 10px;
    border-radius: 8px;
}