body {
    font-family: 'Prompt', sans-serif;
    background-color: #f4f7f6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.btn, .form-control {
    border-radius: 8px;
}
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.bg-reading {
    background: url('../images/bg_reading.jpg') no-repeat center center fixed; 
    background-size: cover;
}
.game-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.mode-card {
    transition: transform 0.3s;
    cursor: pointer;
}
.mode-card:hover {
    transform: translateY(-5px);
}
.mode-card.locked {
    filter: grayscale(100%);
    opacity: 0.7;
    cursor: not-allowed;
}
.choice-btn {
    font-size: 1.2rem;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 10px;
    transition: all 0.2s;
}
.choice-btn:hover {
    transform: scale(1.02);
}
/* Leaderboard Medals */
.medal-1 { color: #FFD700; font-size: 1.5rem; }
.medal-2 { color: #C0C0C0; font-size: 1.5rem; }
.medal-3 { color: #CD7F32; font-size: 1.5rem; }

/* Feedback form styling */
.rating-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 2px;
    font-weight: bold;
}