body {
    font-family: 'Roboto', sans-serif;
    background-color: #f7f7f7;
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.signup-container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    width: 360px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

h2 {
    margin-bottom: 30px;
    font-size: 26px;
    color: #333333;
    font-weight: 600;
}

input, button {
    width: 100%;
    padding: 14px;
    margin: 12px 0;
    border-radius: 8px;
    font-size: 16px;
    color: #555;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

input {
    border: 1px solid #ddd;
    background-color: #f9f9f9;
}

input:focus {
    outline: none;
    border-color: #888;
    background-color: #ffffff;
}

button {
    background-color: #333333;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-bottom: 20px;
}

button:hover {
    background-color: #555555;
}

.error {
    color: #e74c3c;
    font-size: 14px;
    display: none;
    margin-top: 10px;
}