body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    color: #007bff;
    text-decoration: none;
    font-weight: bold;
}

.back-link:hover {
    text-decoration: underline;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

p {
    margin-bottom: 20px;
    color: #555;
}

.generator-container {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    width: 100%;
    margin-bottom: 30px;
}

.form-panel, .schema-panel {
    width: 49%;
    background-color: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

#utm-form label {
    display: block;
    margin-top: 15px;
    font-weight: bold;
    color: #444;
}

#utm-form input {
    width: 100%;
    padding: 12px;
    margin-top: 8px;
    border-radius: 6px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    transition: all 0.3s ease;
    font-family: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
}

#utm-form input:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0,123,255,0.25);
    outline: none;
}

.schema-output-container {
    position: relative;
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 8px;
    height: 150px;
    overflow: auto;
    box-sizing: border-box;
}

#generated-url {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    font-size: 14px;
}

#copy-url-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: #007bff;
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s;
}

#copy-url-btn:hover {
    background-color: #0056b3;
}

.info-section {
    margin-top: 30px;
    background-color: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.info-section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.info-parameter {
    margin-bottom: 20px;
    border-left: 3px solid #007bff;
    padding-left: 15px;
}

.info-parameter h3 {
    font-size: 1.4rem;
    margin-bottom: 5px;
}

.info-parameter p {
    margin: 5px 0;
}

.info-parameter p strong {
    font-weight: bold;
}