body, html {
    margin: 0;
    padding: 0;
    background-color: #fab914;
    font-family: sans-serif;
    width: 100%;
    height: 100%;
}

.flipbook-viewport {
    overflow: hidden;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.flipbook-viewport .container {
    width: 90vw;
    height: 90vh;
}

.flipbook-viewport .flipbook {
    width: 100%;
    height: 100%;
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.5);
}

.flipbook-viewport .page {
    background-color: white;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.flipbook .page {
    -webkit-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    -moz-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    -ms-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    -o-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.flipbook-viewport .page canvas {
    width: 100%;
    height: 100%;
}

#loading-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    font-weight: bold;
    color: #000;
}

.navigation-controls {
    background-color: #fab914;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.2);
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    box-sizing: border-box;
}

#page-indicator {
    color: #000;
    font-weight: bold;
    font-size: 16px;
}

.navigation-controls a {
    text-decoration: none;
}

.navigation-controls button, .navigation-controls a {
    background-color: #000000;
    color: #fab914;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin: 0 10px;
    border-radius: 5px;
    font-weight: bold;
}

.navigation-controls button:disabled {
    background-color: #555;
    color: #888;
    cursor: not-allowed;
}