body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #000428, #004e92);
    color: white;
    margin: 0;
    padding: 0;
}

header {
    padding: 30px;
    text-align: center;
    background: rgba(0,0,0,0.4);
    border-bottom: 2px solid #00eaff;
}

h1 {
    font-size: 32px;
    color: #00eaff;
}

button {
    padding: 12px 24px;
    font-size: 18px;
    border: none;
    background: #00eaff;
    color: black;
    cursor: pointer;
    border-radius: 6px;
}

.content {
    padding: 40px;
    text-align: center;
}

#traceOutput {
    background: rgba(0,0,0,0.6);
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    border-left: 4px solid #00eaff;
}