/* Estilos para el Flipbook PDF */
.flipbook-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: transparent;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

/* Estilos para controles */
.flipbook-controls {
    position: fixed;
    background: rgba(0, 0, 0, 0.85);
    border-radius: 15px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

/* Posicionamiento de controles */
.flipbook-container.controls-top .flipbook-controls {
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.flipbook-container.controls-bottom .flipbook-controls {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.flipbook-container.controls-floating .flipbook-controls {
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
}

/* Grupos de controles */
.controls-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.controls-separator {
    width: 1px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 5px;
}

.flipbook-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 36px;
    height: 36px;
    position: relative;
}

.flipbook-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.flipbook-btn.active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.flipbook-btn svg {
    fill: currentColor;
    flex-shrink: 0;
}

.flipbook-btn .quality-text {
    font-size: 10px;
    margin-left: 2px;
}

.zoom-display {
    min-width: 50px;
    font-weight: 500;
}

.page-info {
    color: white;
    font-size: 13px;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    padding: 0 8px;
    white-space: nowrap;
}

.flipbook-viewer {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.flipbook-pages {
    position: relative;
    cursor: grab;
    transition: transform 0.3s ease;
    transform-origin: center center;
    width: 100%;
    height: 100%;
}

.flipbook-pages.dragging {
    cursor: grabbing;
}

.flipbook-pages.hand-tool {
    cursor: grab;
}

.flipbook-pages.hand-tool:active {
    cursor: grabbing;
}

/* Estilos para el flipbook nativo */
.native-flipbook {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.flipbook-pages-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-style: preserve-3d;
    backface-visibility: hidden;
}

.page-wrapper.active {
    opacity: 1;
    transform: translate(-50%, -50%) rotateY(0deg) scale(1);
    z-index: 10;
}

.page-wrapper.prev {
    opacity: 0;
    transform: translate(-50%, -50%) rotateY(-90deg) scale(0.8);
    z-index: 5;
}

.page-wrapper.next {
    opacity: 0;
    transform: translate(-50%, -50%) rotateY(90deg) scale(0.8);
    z-index: 5;
}

.flipbook-pages-container.transitioning .page-wrapper {
    transition-duration: 0.6s;
}

.flipbook-page {
    background: white;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
}

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

.flipbook-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #333;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px 40px;
    border-radius: 15px;
    z-index: 100;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007cba;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.flipbook-error {
    text-align: center;
    padding: 40px;
    color: #e74c3c;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    margin: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.flipbook-error h3 {
    margin-top: 0;
    color: #333;
}

.retry-btn {
    background: #007cba;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 15px;
    font-size: 14px;
    transition: background 0.3s ease;
}

.retry-btn:hover {
    background: #005a87;
}

/* Navegación por clics en bordes */
.flipbook-nav-left,
.flipbook-nav-right {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    cursor: pointer;
    z-index: 15;
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flipbook-nav-left {
    left: 20px;
    background: linear-gradient(90deg, rgba(0,0,0,0.1), transparent);
}

.flipbook-nav-right {
    right: 20px;
    background: linear-gradient(-90deg, rgba(0,0,0,0.1), transparent);
}

.flipbook-nav-left::before {
    content: '‹';
    font-size: 40px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: bold;
}

.flipbook-nav-right::before {
    content: '›';
    font-size: 40px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: bold;
}

.flipbook-container:hover .flipbook-nav-left,
.flipbook-container:hover .flipbook-nav-right {
    opacity: 0.5;
}

.flipbook-nav-left:hover,
.flipbook-nav-right:hover {
    opacity: 0.8 !important;
    background: rgba(0, 0, 0, 0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .flipbook-controls {
        padding: 10px 15px;
        gap: 10px;
    }
    
    .controls-group {
        gap: 6px;
    }
    
    .flipbook-btn {
        min-width: 32px;
        height: 32px;
        padding: 6px 8px;
    }
    
    .flipbook-btn svg {
        width: 14px;
        height: 14px;
    }
    
    .page-info {
        font-size: 12px;
        padding: 0 6px;
    }
}

@media (max-width: 768px) {
    .flipbook-controls {
        bottom: 10px;
        left: 10px;
        right: 10px;
        transform: none;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        max-width: none;
    }
    
    .flipbook-container.controls-top .flipbook-controls,
    .flipbook-container.controls-floating .flipbook-controls {
        top: auto;
        bottom: 10px;
        left: 10px;
        right: 10px;
        transform: none;
    }
    
    .controls-group {
        gap: 4px;
    }
    
    .controls-separator {
        display: none;
    }
    
    .flipbook-btn {
        min-width: 28px;
        height: 28px;
        padding: 4px 6px;
        flex: 0 0 auto;
    }
    
    .flipbook-btn svg {
        width: 12px;
        height: 12px;
    }
    
    .flipbook-btn .quality-text {
        display: none;
    }
    
    .page-info {
        font-size: 11px;
        order: -1;
        flex: 1 1 100%;
        text-align: center;
        padding: 4px 0;
    }
    
    .navigation-group {
        order: 1;
        flex: 1;
        justify-content: space-around;
    }
    
    .tools-group {
        order: 2;
        flex: 1;
        justify-content: space-around;
    }
    
    .quality-group {
        order: 3;
        flex: 1;
        justify-content: space-around;
    }
    
    .flipbook-nav-left,
    .flipbook-nav-right {
        width: 50px;
    }
    
    .flipbook-nav-left {
        left: 10px;
    }
    
    .flipbook-nav-right {
        right: 10px;
    }
    
    .flipbook-nav-left::before,
    .flipbook-nav-right::before {
        font-size: 30px;
    }
}

@media (max-width: 480px) {
    .flipbook-controls {
        padding: 8px 10px;
        gap: 6px;
    }
    
    .flipbook-btn {
        min-width: 24px;
        height: 24px;
        padding: 2px 4px;
    }
    
    .flipbook-btn svg {
        width: 10px;
        height: 10px;
    }
    
    .page-info {
        font-size: 10px;
    }
    
    .zoom-display {
        min-width: 35px;
        font-size: 10px;
    }
}

/* Animaciones para el efecto flipbook */
@keyframes pageFlipIn {
    0% {
        transform: translate(-50%, -50%) rotateY(-90deg) scale(0.8);
        opacity: 0;
    }
    50% {
        transform: translate(-50%, -50%) rotateY(-45deg) scale(0.9);
        opacity: 0.5;
    }
    100% {
        transform: translate(-50%, -50%) rotateY(0deg) scale(1);
        opacity: 1;
    }
}

@keyframes pageFlipOut {
    0% {
        transform: translate(-50%, -50%) rotateY(0deg) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(-50%, -50%) rotateY(45deg) scale(0.9);
        opacity: 0.5;
    }
    100% {
        transform: translate(-50%, -50%) rotateY(90deg) scale(0.8);
        opacity: 0;
    }
}

/* Efectos de transición */
.flipbook-container * {
    box-sizing: border-box;
}

.flipbook-pages {
    will-change: transform;
}

/* Sombra adicional para mayor realismo */
.flipbook-page::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(0,0,0,0.05) 50%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.page-wrapper:hover .flipbook-page::after {
    opacity: 1;
}

/* Auto-hide controls */
.flipbook-container.auto-hide:not(:hover) .flipbook-controls {
    opacity: 0.3;
    transform: translateX(-50%) translateY(10px);
}

.flipbook-container.controls-bottom.auto-hide:not(:hover) .flipbook-controls {
    transform: translateX(-50%) translateY(-10px);
}

/* Tooltips mejorados */
.flipbook-btn[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    white-space: nowrap;
    z-index: 1001;
    margin-bottom: 5px;
}

.flipbook-btn[title]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    z-index: 1001;
    margin-bottom: 1px;
}

/* Pantalla completa */
.flipbook-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background: #000;
}

/* Estados de calidad visual */
.flipbook-container[data-quality="low"] .flipbook-page {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: optimize-contrast;
}

.flipbook-container[data-quality="high"] .flipbook-page,
.flipbook-container[data-quality="ultra"] .flipbook-page {
    image-rendering: -webkit-optimize-quality;
    image-rendering: optimize-quality;
}