body {
    font-family: system-ui, -apple-system, sans-serif;
    background: #f5f5f5;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    margin-top: 0;
}

h2, h3 {
    margin-top: 30px;
}

label {
    display: block;
    margin-top: 15px;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.san-row {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.san-row select {
    width: 100px;
}

.san-row input {
    flex: 1;
}

button {
    background: #2563eb;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 20px;
    font-size: 16px;
}

button[type="button"] {
    background: #4b5563;
    margin-left: 10px;
}

.btn {
    display: inline-block;
    background: #2563eb;
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    margin-right: 10px;
}

.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 20px;
    border-radius: 4px;
    margin-top: 20px;
}

pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.5;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

#results {
    margin-top: 30px;
}

.downloads {
    margin-top: 20px;
}