/**
 * 3D PDF Book Viewer Styles
 */

 .pdf-book-container {
    position: relative;
    margin: 30px auto;
    perspective: 1300px;
    font-family: 'Sarabun', sans-serif;
    max-height: 800px;  /* กำหนดความสูงสูงสุดสำหรับ Desktop ตามที่ต้องการ */
}

.pdf-book-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #333;
    font-size: 18px;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 15px 30px;
    border-radius: 5px;
    z-index: 100;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.pdf-book-error {
    background-color: rgba(255, 230, 230, 0.9);
    color: #d32f2f;
    border-left: 4px solid #d32f2f;
}

.pdf-book {
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    background-color: transparent;
    cursor: grab; /* แสดงเคอร์เซอร์แบบ grab เพื่อบอกว่าสามารถลากได้ */
}

/* เมื่อกำลังคลิกค้างเพื่อลาก */
.pdf-book:active {
    cursor: grabbing;
}

.pdf-page {
    background-color: #fff;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    padding: 5px;
}

/* เส้นตรงกลางเลียนแบบรอยพับของหนังสือ */
.turn-book .p-even:after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: rgba(0,0,0,0.1);
    box-shadow: -1px 0 1px rgba(0,0,0,0.1);
}

.turn-book .p-odd:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    height: 100%;
    background: rgba(0,0,0,0.1);
    box-shadow: 1px 0 1px rgba(0,0,0,0.1);
}

.pdf-page-number {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 12px;
    z-index: 10;
}

.pdf-book-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    padding: 10px 15px;
    background-color: #f5f5f5;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.pdf-book-prev,
.pdf-book-next {
    background-color: #0073aa;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.pdf-book-prev:hover,
.pdf-book-next:hover {
    background-color: #005177;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.pdf-book-prev:active,
.pdf-book-next:active {
    transform: translateY(0);
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.2);
}

.pdf-book-page-info {
    font-size: 16px;
    color: #333;
    margin: 0 20px;
    font-weight: 500;
}

/* Turn.js specific styles */
.turn-page {
    background-color: #fff;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
}

.turn-page-wrapper {
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}

/* Hard page effect */
.hard {
    background: #f0f0f0 !important;
    color: #333;
    -webkit-box-shadow: inset 0 0 5px #666;
    -moz-box-shadow: inset 0 0 5px #666;
    -o-box-shadow: inset 0 0 5px #666;
    -ms-box-shadow: inset 0 0 5px #666;
    box-shadow: inset 0 0 5px #666;
    font-weight: bold;
}

.cover-front {
    background-image: linear-gradient(to right, #e4e4e4 0%, #f9f9f9 100%) !important;
    position: relative;
}

.cover-front:after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.1), rgba(0,0,0,0.0));
}

.cover-back {
    background-image: linear-gradient(to left, #e4e4e4 0%, #f9f9f9 100%) !important;
    position: relative;
}

.cover-back:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(to left, rgba(0,0,0,0.1), rgba(0,0,0,0.0));
}

/* Shadow effect during page turning */
.shadow {
    -webkit-box-shadow: 0 0 20px #ccc;
    -moz-box-shadow: 0 0 20px #ccc;
    -o-box-shadow: 0 0 20px #ccc;
    -ms-box-shadow: 0 0 20px #ccc;
    box-shadow: 0 0 20px #ccc;
}

/* Page curl effect */
.turn-page.odd {
    background-image: -webkit-linear-gradient(left, #f5f5f5 0%, #fff 100%);
    background-image: -moz-linear-gradient(left, #f5f5f5 0%, #fff 100%);
    background-image: -o-linear-gradient(left, #f5f5f5 0%, #fff 100%);
    background-image: -ms-linear-gradient(left, #f5f5f5 0%, #fff 100%);
}

.turn-page.even {
    background-image: -webkit-linear-gradient(right, #f5f5f5 0%, #fff 100%);
    background-image: -moz-linear-gradient(right, #f5f5f5 0%, #fff 100%);
    background-image: -o-linear-gradient(right, #f5f5f5 0%, #fff 100%);
    background-image: -ms-linear-gradient(right, #f5f5f5 0%, #fff 100%);
}

/* Fallback PDF viewer */
.pdf-fallback-viewer {
    width: 100%;
    margin: 20px 0;
    padding: 0;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.pdf-fallback-header {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pdf-fallback-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.pdf-reload-btn {
    background-color: #0073aa;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.pdf-reload-btn:hover {
    background-color: #005177;
    transform: translateY(-2px);
}

.pdf-fallback-content {
    padding: 0;
    height: 600px;
}

.pdf-object {
    border: none;
}

.pdf-fallback-message {
    color: #555;
    text-align: center;
    margin: 15px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 4px;
    font-size: 14px;
    font-style: italic;
}

.pdf-book-retry {
    background-color: #0073aa;
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.pdf-book-retry:hover {
    background-color: #005177;
    transform: translateY(-2px);
}

/* Responsive styles */
@media (max-width: 992px) {
    .pdf-book-container {
        height: 500px !important;
        max-height: 500px !important;  /* ตามที่ต้องการสำหรับ Mobile */
    }
}

@media (max-width: 768px) {
    .pdf-book-container {
        height: 500px !important;
        max-height: 500px !important;  /* ตามที่ต้องการสำหรับ Mobile */
    }
    
    .pdf-book-prev,
    .pdf-book-next {
        padding: 8px 15px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .pdf-book-container {
        height: 500px !important;
        max-height: 500px !important;  /* ตามที่ต้องการสำหรับ Mobile */
    }
    
    .pdf-book-controls {
        flex-direction: column;
        padding: 10px;
    }
    
    .pdf-book-page-info {
        margin: 10px 0;
        order: -1;
    }
    
    .pdf-book-prev,
    .pdf-book-next {
        width: 100%;
        margin: 5px 0;
    }
}