:root {
    --page-width: 300px;
    --page-height: 450px;
    --book-thickness: 40px;
    --cover-color: #8B0000;
    --page-color: #fdfaf0;
    --text-color: #2c1810;
}

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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f0e6d2;
    background-image: radial-gradient(#e6d5b8 1px, transparent 1px);
    background-size: 20px 20px;
    font-family: 'Tiro Devanagari Marathi', serif;
    overflow: hidden;
}

.scene {
    perspective: 1500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.book-container {
    position: relative;
    width: var(--page-width);
    height: var(--page-height);
    transform-style: preserve-3d;
    transition: transform 1s;
}

.book {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.page {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    transform-origin: left center;
    transition: transform 1s, z-index 0.5s;
    background-color: var(--page-color);
    border: 1px solid #d4c5a9;
    box-shadow: inset 5px 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    padding: 20px;
    backface-visibility: hidden;
}

.page.flipped {
    transform: rotateY(-180deg);
}

.page-content {
    flex: 1;
    overflow-y: auto;
    text-align: center;
}

.page-content h2 {
    color: var(--cover-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--cover-color);
    padding-bottom: 10px;
}

.lyrics {
    white-space: pre-line;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

/* Page layering */
/* We will manage Z-index dynamically via JS */

.controls {
    display: flex;
    gap: 20px;
    align-items: center;
    background: white;
    padding: 10px 20px;
    border-radius: 30px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.control-btn {
    padding: 8px 16px;
    background-color: var(--cover-color);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    transition: background 0.3s;
}

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

.audio-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.audio-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--cover-color);
    background: transparent;
    color: var(--cover-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s;
}

.audio-btn:hover {
    background: var(--cover-color);
    color: white;
}

#audioStatus {
    font-size: 0.8rem;
    color: #666;
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
    :root {
        --page-width: 90vw;
        --page-height: 70vh;
    }
    
    .lyrics {
        font-size: 1rem;
    }
}