* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #74ebd5, #9face6);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    overflow: hidden;
    font-size: 1.2rem;
    animation: backgroundAnimation 10s infinite alternate;
}

.game-container {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0px 15px 30px rgba(0, 0, 0, 0.4);
    text-align: center;
    max-width: 400px;
    width: 100%;
    transition: all 0.3s ease-in-out;
}

h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #fff;
    letter-spacing: 2px;
}

input {
    padding: 10px 20px;
    font-size: 1.2rem;
    border-radius: 5px;
    border: none;
    width: 80%;
    margin-top: 15px;
    transition: 0.3s ease-in-out;
}

input:focus {
    outline: none;
    border: 2px solid #ff6f61;
    box-shadow: 0 0 5px rgba(255, 111, 97, 0.8);
}

.guess-button {
    background-color: #2fa429;
    color: #fff;
    border: none;
    padding: 12px 25px;
    font-size: 1.2rem;
    border-radius: 5px;
    margin-top: 15px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s ease-in-out;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.guess-button:hover {
    background-color: #268126;
    transform: translateY(-3px);
}

.guess-button:active {
    transform: translateY(2px);
}

.result {
    margin-top: 30px;
    font-size: 1.3rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.error {
    margin-top: 10px;
    color: #ff4d4d;
    font-size: 1.1rem;
}

#restart-button {
    padding: 12px 24px; 
    background-color: #4CAF50;
    color: white;
    font-size: 16px;
    font-weight: bold;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    margin-top: 20px;
    display: none;
    width: 100%;
    max-width: 200px; 
    margin-left: auto;
    margin-right: auto; 
}

#restart-button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

#restart-button:active {
    background-color: #388e3c;
    transform: scale(1);
}



.game-container:hover {
    transform: translateY(-10px);
    box-shadow: 0px 20px 40px rgba(0, 0, 0, 0.4);
}

@media (max-width: 500px) {
    h1 {
        font-size: 2rem;
    }

    input, button {
        width: 90%;
    }

    .game-container {
        padding: 20px;
    }
}