* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #eef2f3;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

input, select {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    background-color: #28a745;
    color: white;
    padding: 12px;
    border: none;
    width: 100%;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

.popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    text-align: center;
    width: 300px;
    z-index: 1000;
}