body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 40px auto;
    padding: 20px;
    background: #fdfdfd;
    border: 1px solid #ccc;
    border-radius: 10px;
}

h2 {
    text-align: center;
}

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

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 8px;
    margin: 5px 0 15px;
    border: 1px solid #aaa;
    border-radius: 4px;
}

.drop-area {
    border: 2px dashed #999;
    padding: 20px;
    text-align: center;
    margin-bottom: 15px;
    border-radius: 5px;
    background: #f3f3f3;
    cursor: pointer;
    transition: background 0.3s;
}

.drop-area.dragover {
    background: #d0eaff;
}

.status {
    font-size: 0.9em;
    margin-top: 5px;
}

button {
    padding: 10px 20px;
    background: #2a9d8f;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: #21867a;
}