/* flipbook.css */

:root {
    /* Customizable Variables */
    --flipbook-bg-color: #f9f9f9;
    --flipbook-canvas-border: 1px solid #ccc;
    --flipbook-btn-bg: #007bff;
    --flipbook-btn-color: #ffffff;
    --flipbook-btn-hover-bg: #0056b3;
    --flipbook-btn-hover-color: #ffffff;
    --flipbook-btn-radius: 5px;
    --flipbook-btn-padding: 10px 20px;
    --flipbook-btn-font-family: Arial, sans-serif;
    --flipbook-btn-font-size: 14px;
    --flipbook-spacing: 20px;
    --flipbook-canvas-max-width: 100%;
    --flipbook-animation-duration: 0.8s;
    --flipbook-page-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.pdf-flipbook-container {
    background-color: var(--flipbook-bg-color);
    padding: var(--flipbook-spacing);
    text-align: center;
    border-radius: 5px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: inline-block;
    width: 100%;
    max-width: 800px;
    position: relative;
    overflow: hidden;
}

.pdf-flipbook-container canvas {
    border: var(--flipbook-canvas-border);
    margin-bottom: var(--flipbook-spacing);
    width: var(--flipbook-canvas-max-width);
    height: auto;
    transition: transform var(--flipbook-animation-duration) ease-in-out;
}

/* Double-page layout */
.pdf-flipbook-container.double-page {
    display: flex;
    justify-content: center;
}

.pdf-flipbook-container.double-page canvas {
    width: calc(var(--flipbook-canvas-max-width) / 2 - 10px);
    margin: 0 5px;
}

/* Flip Animations */
@keyframes page-flip {
    0% {
        transform: rotateY(0deg);
        box-shadow: none;
    }
    50% {
        transform: rotateY(-90deg);
        box-shadow: var(--flipbook-page-shadow);
    }
    100% {
        transform: rotateY(-180deg);
        box-shadow: none;
    }
}

.pdf-flipbook-container .flip-animation {
    animation: page-flip var(--flipbook-animation-duration) forwards;
}

.flipbook-navigation {
    display: flex;
    justify-content: center;
    gap: var(--flipbook-spacing);
    margin-top: var(--flipbook-spacing);
    flex-wrap: wrap;
}

.flipbook-navigation button {
    background-color: var(--flipbook-btn-bg);
    color: var(--flipbook-btn-color);
    border: none;
    border-radius: var(--flipbook-btn-radius);
    padding: var(--flipbook-btn-padding);
    font-family: var(--flipbook-btn-font-family);
    font-size: var(--flipbook-btn-font-size);
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

.flipbook-navigation button:hover {
    background-color: var(--flipbook-btn-hover-bg);
    color: var(--flipbook-btn-hover-color);
}

.flipbook-navigation button:disabled {
    background-color: #e0e0e0;
    color: #9e9e9e;
    cursor: not-allowed;
}

/* Media Queries for Responsiveness */
@media (max-width: 600px) {
    .pdf-flipbook-container {
        padding: 10px;
    }

    .flipbook-navigation button {
        padding: 8px 15px;
        font-size: 12px;
    }

    canvas {
        max-width: 100%;
        height: auto;
    }
}

@media (max-width: 400px) {
    .flipbook-navigation {
        flex-direction: column;
        gap: 10px;
    }
}