body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #121212;
    color: #e0e0e0;
}

.container {
    display: flex;
    gap: 20px;
    height: 80vh;
}

.left {
    flex: 1;
    background-color: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.right {
    flex: 2;
    background-color: #1e1e1e;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

h3 {
    color: #ffffff;
    margin-top: 0;
}

label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
    font-weight: bold;
    color: #cccccc;
}

textarea, select {
    width: 100%;
    padding: 8px;
    border: 1px solid #555;
    border-radius: 4px;
    background-color: #2a2a2a;
    color: #e0e0e0;
    resize: vertical;
}

textarea:focus, select:focus {
    outline: none;
    border-color: #007acc;
}

#input {
    height: 200px;
}

#output {
    min-height: 200px;
    padding: 8px;
    border: 1px solid #555;
    border-radius: 4px;
    background-color: #2a2a2a;
    color: #e0e0e0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.allowed {
    background-color: #2d5016;
    color: #c8e6c9;
}

.blocked {
    background-color: #8b0000;
    color: #ffcdd2;
}

.regex-match {
    background-color: #8b4513;
    color: #ffebcd;
}