body {
    font-family: 'Arial', sans-serif;
    background-color: #f3f3f3;
    color: #333;
    text-align: center;
    margin: 0;
    padding: 0;
}

header h1 {
    color: #d32f2f;
    font-size: 2rem;
    margin-top: 20px;
}

button {
    font-size: 1.2rem;
    padding: 15px;
    margin: 10px;
    background-color: #d32f2f;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    width: 80%;
    max-width: 300px;
}

button:hover {
    background-color: #c2185b;
}

.sos-button {
    background-color: red;
    font-size: 3rem;
    padding: 20px;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    margin-top: 30px;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    display: flex;
    justify-content: space-around;
    background-color: #333;
    padding: 10px;
}

.bottom-nav button {
    background-color: #444;
    color: white;
    font-size: 1rem;
    padding: 15px;
    border: none;
    border-radius: 50px;
    flex: 1;
}

.dark-mode {
    background-color: #333;
    color: #fff;
}