body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        line-height: 1.6;
        color: #333;
        max-width: 1000px;
        margin: 0 auto;
        padding: 20px;
    }

    .container {
        display: grid;
        gap: 20px;
    }

    h1,
    h2 {
        color: #2c3e50;
    }

    select,
    input,
    textarea {
        width: 100%;
        padding: 10px;
        margin-bottom: 15px;
        border: 1px solid #ddd;
        border-radius: 4px;
        font-size: 16px;
    }

    textarea {
        min-height: 200px;
        font-family: monospace;
    }

    button {
        background-color: #3498db;
        color: white;
        border: none;
        padding: 10px 20px;
        border-radius: 4px;
        cursor: pointer;
        font-size: 16px;
        transition: background-color 0.3s;
    }

    button:hover {
        background-color: #2980b9;
    }

    #results-container {
        padding: 15px;
        border: 1px solid #ddd;
        border-radius: 4px;
        background-color: #f9f9f9;
        min-height: 100px;
    }

    .result-pass {
        color: #27ae60;
    }

    .result-fail {
        color: #e74c3c;
    }

    .suggestions {
        margin-top: 15px;
        padding-left: 20px;
    }

    .suggestions li {
        margin-bottom: 5px;
    }

    .quick-fixes {
        background-color: #f8f9fa;
        border-left: 4px solid #3498db;
        padding: 10px;
        margin: 10px 0;
    }

    .quick-fixes h4 {
        margin-top: 0;
        color: #2c3e50;
    }

    .quick-fix-item {
        cursor: pointer;
        padding: 5px;
        border-radius: 3px;
    }

    .quick-fix-item:hover {
        background-color: #e8f4fc;
    }

    /* Code editor-like textarea */
    #code-submission {
        font-family: 'Courier New', Courier, monospace;
        font-size: 14px;
        line-height: 1.5;
        tab-size: 4;
    }

    .critical-issues {
        background-color: #fdecea;
        border-left: 4px solid #e74c3c;
        padding: 10px;
        margin: 10px 0;
    }

    .critical-issues h4 {
        margin-top: 0;
        color: #c0392b;
    }