body {
    font-family: Arial, sans-serif;
    background-color: #f8f9fa;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: auto;
    background: #fff;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
}

input[type="number"],
input[type="text"],
input[type="file"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    border: none;
    border-radius: 5px;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.alert {
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
}

.alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}