.narration-bubble {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 20px 30px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-width: 400px;
    opacity: 0;
    transition: all 0.5s ease-out;
}

.narration-bubble.active {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.narration-bubble.entering {
    animation: bubbleEnter 0.5s ease-out forwards;
}

.narration-bubble.exiting {
    animation: bubbleExit 0.5s ease-out forwards;
}

.narration-content {
    font-size: 1.1rem;
    line-height: 1.5;
    color: #333;
    text-align: center;
}

.narration-icon {
    font-size: 1.5rem;
    margin-bottom: 10px;
    display: block;
}

@keyframes bubbleEnter {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes bubbleExit {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(50px);
    }
}

/* Glass wall highlight effect */
.glass-highlight {
    position: absolute;
    background: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0.1) 100%
    );
    pointer-events: none;
    transition: opacity 0.5s ease;
}