.dns-lookup-container {
    max-width: 900px;
    margin: 0 auto;
}

.input-bar {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 1rem;
    margin-bottom: 2rem;
}

.input-bar .form-control {
    flex-grow: 1;
    font-size: 1.1rem;
    padding: 0.9rem 1.2rem;
}

.input-bar .custom-select {
    font-size: 1rem;
    padding: 0.9rem 2.5rem 0.9rem 1rem;
}

.input-bar .btn {
    font-size: 1.1rem;
    padding: 0.9rem 1.5rem;
    white-space: nowrap;
}

.results-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 2rem;
    min-height: 200px;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
}

.results-table th, .results-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
    word-break: break-all;
}

.results-table th {
    color: var(--text-color-light);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
}

.results-table td {
    color: var(--text-color);
}

.results-table tr:last-child td {
    border-bottom: none;
}

.error-message {
    text-align: center;
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    padding: 1rem;
    border-radius: 8px;
}

@media (max-width: 600px) {
    .input-bar {
        grid-template-columns: 1fr;
    }
}