:root {
    --primary-color: #8D6E63; /* Earthy Brown */
    --secondary-color: #66BB6A; /* Dino Green */
    --accent-color: #FFCA28; /* Discovery Gold */
    --bg-color: #F1F8E9; /* Light Greenish White */
    --text-color: #3E2723;
    --card-bg: #FFFFFF;
}

body {
    font-family: 'Comic Neue', cursive, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 800px;
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    padding: 20px;
    text-align: center;
    overflow: hidden;
    position: relative;
    border: 5px solid var(--primary-color);
}

header h1 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 10px;
}

.audio-btn {
    background-color: var(--accent-color);
    border: none;
    padding: 10px 20px;
    border-radius: 50px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s;
    font-size: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.audio-btn:hover {
    transform: scale(1.05);
}

.audio-btn.playing {
    background-color: var(--secondary-color);
    color: white;
}

#stage-container {
    position: relative;
    height: 500px; /* Adjust based on content */
    margin: 20px 0;
}

.stage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s ease-in-out;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stage.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.stage.prev {
    transform: translateX(-100%);
}

.image-frame {
    width: 100%;
    max-width: 400px;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    border: 4px dashed var(--secondary-color);
    margin-bottom: 15px;
    background-color: #eee;
}

.image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.content h2 {
    color: var(--secondary-color);
    margin: 10px 0;
}

.content p {
    font-size: 1.2rem;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding: 0 20px;
}

.nav-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 1.1rem;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.3s;
}

.nav-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.nav-btn:hover:not(:disabled) {
    background-color: #5D4037;
}

.progress-dots {
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: #ddd;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.dot.active {
    background-color: var(--secondary-color);
    transform: scale(1.2);
}

@media (max-width: 600px) {
    .container {
        width: 95%;
        padding: 10px;
    }
    
    #stage-container {
        height: 450px;
    }

    .image-frame {
        height: 200px;
    }

    header h1 {
        font-size: 1.5rem;
    }
}