body {
    margin: 0;
    background: #f5f5f5;
    font-family: Arial, sans-serif;
}

.title {
    text-align: center;
    font-size: 32px;
    font-weight: 900;
    margin: 15px 0;
}

.top-buttons {
    text-align: center;
    margin-bottom: 10px;
}

.tab, .run {
    padding: 10px 20px;
    border: none;
    background: #ddd;
    font-size: 16px;
    border-radius: 8px;
}

.tab.active {
    background: #bbb;
}

.run {
    background: #ff2c7d;
    color: white;
}

.file-tabs {
    display: flex;
    padding: 10px 20px;
    gap: 20px;
}

.file {
    background: none;
    border: none;
    font-size: 17px;
}

.file.active {
    color: blue;
    border-bottom: 3px solid blue;
}

.CodeMirror {
    height: 80vh !important;
    font-size: 16px;
    border-top: 2px solid #ccc;
}

.hidden {
    display: none;
}

#output {
    width: 100%;
    height: 80vh;
    border: none;
}