/* Mobile-friendly CSS for Cat Crystals app */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f8f8f8;
    color: #222;
}

header, nav, main, footer {
    width: 100%;
    box-sizing: border-box;
}

nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    background: #fff;
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
}
nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #0077cc;
    font-weight: bold;
    font-size: 1.1em;
}

h1, h2, h3 {
    text-align: center;
    margin: 20px 0 10px 0;
}

form {
    max-width: 400px;
    margin: 20px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
form input, form textarea, form select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
form input[type="submit"], form button {
    width: auto;
    background: #0077cc;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}
form input[type="submit"]:hover, form button:hover {
    background: #005fa3;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0 auto 20px auto;
    max-width: 400px;
}
ul li {
    background: #fff;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 10px auto;
    border-radius: 6px;
}

@media (max-width: 600px) {
    body {
        font-size: 1em;
    }
    nav a {
        font-size: 1em;
        margin: 5px 8px;
    }
    form, ul {
        max-width: 98vw;
        padding: 10px;
    }
    h1, h2, h3 {
        font-size: 1.2em;
    }
}