* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: #1e1e1e;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.editor-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.input-area {
    display: flex;
    flex: 1;
    background: #252526;
}

.panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid #333;
}

label {
    background: #333;
    padding: 5px 15px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

textarea {
    flex: 1;
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 15px;
    border: none;
    resize: none;
    font-family: 'Courier New', Courier, monospace;
    outline: none;
}

.output-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
}

#output-frame {
    width: 100%;
    flex: 1;
    border: none;
    background: white;
}