body {
    background: linear-gradient(135deg, #f8ffae 0%, #43c6ac 100%);
    font-family: 'Segoe UI', Verdana, Geneva, Tahoma, sans-serif;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 400px;
    margin: 40px auto 0 auto;
    background: rgba(255,255,255,0.95);
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(60, 60, 60, 0.15);
    padding: 32px 24px 24px 24px;
    text-align: center;
}

h1 {
    color: #43c6ac;
    margin-bottom: 24px;
    font-size: 2.2rem;
    letter-spacing: 2px;
}

#question {
    font-size: 1.25rem;
    margin-bottom: 18px;
    color: #333;
}

.btn-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 18px;
}

.btn {
    background: #43c6ac;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 0;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    box-shadow: 0 2px 8px rgba(67,198,172,0.08);
}

.btn:hover, .btn.selected {
    background: #198f6e;
    transform: translateY(-2px) scale(1.04);
}

.btn.correct {
    background: #7be495;
    color: #222;
}

.btn.wrong {
    background: #ff6f6f;
    color: #fff;
}

.hide {
    display: none;
}

#score-container {
    margin-top: 24px;
}

#score {
    font-size: 1.3rem;
    color: #198f6e;
    margin-bottom: 16px;
}

footer {
    margin-top: auto;
    text-align: center;
    color: #555;
    font-size: 0.95rem;
    padding: 18px 0 10px 0;
    letter-spacing: 1px;
}
