:root {
    --safe-area-inset-top: env(safe-area-inset-top);
    --safe-area-inset-right: env(safe-area-inset-right);
    --safe-area-inset-bottom: env(safe-area-inset-bottom);
    --safe-area-inset-left: env(safe-area-inset-left)
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

#content {
    flex-grow: 1;
    padding: 20px;
    padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
    overflow-y: auto;
}

nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #f8f9fa;
    display: flex;
    justify-content: space-around;
    padding: 10px 0;
    padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
}

nav a {
    text-decoration: none;
    color: #495057;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 12px;
    background-color: transparent;
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav a:hover, nav a.active {
    background-color: #e9ecef;
}

nav a.active {
    color: #007bff;
}

.icon {
    font-size: 24px;
    margin-bottom: 4px;
}

button {
    margin-bottom: 10px;
}

#notificationStatus {
    margin-top: 10px;
    padding: 10px;
    border-radius: 5px;
    display: none;
}

.success {
    background-color: #d4edda;
    color: #155724;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
}