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

body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 95%;
    max-width: 1200px;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 20px;
}

.header h1 {
    color: #333;
    margin-bottom: 15px;
    font-size: 24px;
}

.game-info {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.score, .timer {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.music-control {
    margin-left: 20px;
}

#musicToggle {
    padding: 8px 16px;
    font-size: 14px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#musicToggle:hover {
    background-color: #45a049;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.expressions {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 10px;
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.expression-item {
    background: #e3f2fd;
    padding: 8px;
    border: 2px solid #ddd;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    transition: all 0.3s ease;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.expression-item input {
    width: 35px;
    height: 25px;
    text-align: center;
    font-size: 14px;
    border: 2px solid #ddd;
    border-radius: 4px;
    outline: none;
}

.expression-item input:focus {
    border-color: #4CAF50;
}

.expression-item.correct {
    border-color: #4CAF50;
    background: #e8f5e9;
}

.expression-item.wrong {
    border-color: #f44336;
    background: #ffebee;
}

.result-icon {
    font-size: 16px;
    display: inline-block;
}

.submit-container {
    margin-top: 20px;
}

#submitBtn {
    padding: 10px 30px;
    font-size: 16px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#submitBtn:hover {
    background-color: #1976D2;
}

#submitBtn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.emoji {
    font-size: 24px;
    display: inline-block;
    animation: emojiPop 0.5s ease-out;
}

@keyframes emojiPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.5);
    }
    100% {
        transform: scale(1);
    }
}

.copyright {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
    font-weight: bold;
}