body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #f9f9f9;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

nav ul li {
    display: inline;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

main {
    flex: 1;
    padding: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pet-gallery {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.pet-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: white;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.pet-button img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 0.5rem;
}

.pet-button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

#coin-counter {
    font-size: 1.5rem;
    margin: 1rem 0;
    text-align: center;
}

#inventory-list,
#equipped-pets ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

#inventory-list div,
#equipped-pets ul li {
    background: white;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    width: 120px;
}

.equipped {
    border: 2px solid gold;
    background-color: #fffae6;
}

#buy-egg {
    display: block;
    margin: 1rem auto;
    padding: 0.5rem 1rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

#buy-egg:hover {
    background-color: #45a049;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    position: relative;
    bottom: 0;
    width: 100%;
}

#coin-display {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: #4CAF50;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.login-container h1 {
    text-align: center;
    margin-bottom: 20px;
}

.login-container label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.login-container input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.login-container button {
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.login-container button:hover {
    background-color: #45a049;
}

.login-button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    font-size: 16px;
    color: white;
    background-color: #4CAF50;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
}

.login-button:hover {
    background-color: #45a049;
}

#login-message {
    text-align: center;
    color: red;
    margin-top: 10px;
}