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

header {
    background: linear-gradient(45deg, #0066ff, #8000ff, #ff00ff);
    color: white;
    padding: 20px;
    text-align: center;
}

.controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 20px;
}

input {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background: #8000ff;
    color: white;
    cursor: pointer;
}

button:hover {
    background: #6a00d4;
}

table {
    width: 80%;
    margin: 20px auto;
    border-collapse: collapse;
    background: white;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: #0066ff;
    color: white;
}

tr:nth-child(even) {
    background: #f8f8f8;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
}

.modal-content {
    background: white;