body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    transition: background-color 0.5s;
}

[data-theme="light"] {
    background-color: #f4f4f4;
    color: #333;
}

[data-theme="dark"] {
    background-color: #2c2f33;
    color: #f4f4f4;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    transition: background-color 0.5s;
}

[data-theme="dark"] .container {
    background-color: #36393f;
}

h2 {
    text-align: center;
    color: #007BFF;
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    transition: border-color 0.5s;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="number"] {
    background-color: #2c2f33;
    color: #f4f4f4;
    border-color: #4a4d52;
}

input[type="submit"] {
    display: block;
    width: 100%;
    background: #007BFF;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.5s;
}

input[type="submit"]:hover {
    background: #0056b3;
}

.progress {
    height: 20px;
    background: #ccc;
    border-radius: 4px;
    margin-bottom: 20px;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: #007BFF;
    border-radius: 4px;
    transition: width 0.5s;
}

.status {
    margin-bottom: 20px;
    font-style: italic;
}