/* ========================================
   PDF Flipbook Pro - Frontend Styles
   Estética Editorial de Lujo
   ======================================== */

:root {
    --pfp-primary: #1a1a2e;
    --pfp-secondary: #c59d5f;
    --pfp-accent: #8b6f47;
    --pfp-bg-light: #f8f6f3;
    --pfp-bg-dark: #2a2a3e;
    --pfp-text: #2d2d2d;
    --pfp-text-light: #666;
    --pfp-border: rgba(197, 157, 95, 0.2);
    --pfp-shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.08);
    --pfp-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
    --pfp-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.2);
    --pfp-gradient: linear-gradient(135deg, #c59d5f 0%, #8b6f47 100%);
    --pfp-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Flipbook Container */
.pfp-flipbook-wrapper {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 2rem 1rem;
    background: var(--pfp-bg-light);
    border-radius: 0;
    box-shadow: none;
    position: relative;
    overflow: visible;
}

.pfp-flipbook-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--pfp-gradient);
}

/* Asegurar visibilidad del flipbook */
.pfp-flipbook-container {
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pfp-flipbook {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Contenedor del Libro */
.pfp-book-container {
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
    background: var(--pfp-bg-light);
}

.pfp-book {
    position: relative;
    margin: 0 auto;
    box-shadow: 0 10px 50px rgba(0,0,0,0.3);
    background: #333;
}

/* Páginas del libro */
.pfp-page {
    width: 100% !important;
    height: 100% !important;
    background: white !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    overflow: hidden !important;
}

.pfp-page img {
    max-width: 100% !important;
    max-height: 100% !important;
    object-fit: contain !important;
    display: block !important;
}

/* Turn.js specific styles - CRITICAL */
.pfp-book {
    position: relative !important;
    margin: 0 auto !important;
}

.pfp-book .turn-page {
    background: white !important;
    background-color: white !important;
}

.pfp-book .turn-page-wrapper {
    background: white !important;
}

/* Ensure ALL pages are visible in DOM */
.pfp-book > .pfp-page {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Page shadows for Turn.js */
.pfp-book .shadow {
    transition: all 0.3s ease;
}

/* Even/odd page positioning for Turn.js */
.pfp-book .pfp-page:nth-child(even) {
    /* Right pages in spread */
}

.pfp-book .pfp-page:nth-child(odd) {
    /* Left pages in spread */
}
.pfp-book .pfp-page {
    background: white;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    display: block !important;
}

.pfp-book .pfp-page-content {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pfp-book .pfp-page img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Sombras y efectos de Turn.js */
.pfp-book .even {
    background: linear-gradient(to left, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0) 10%);
}

.pfp-book .odd {
    background: linear-gradient(to right, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0) 10%);
}

/* Página siendo volteada */
.pfp-book .page-wrapper {
    perspective: 2000px;
}

.pfp-book .turn-page {
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

/* Sombra en el centro del libro */
.pfp-book .turn-page-wrapper {
    background: white;
}

/* Efecto de hojas duras (portadas) */
.pfp-book .hard {
    background: linear-gradient(135deg, #e8e8e8 0%, #f5f5f5 100%);
    border: 1px solid #ccc;
}

/* TOOLBAR MODERNA */
.pfp-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    margin: 2rem 0;
}

.pfp-nav-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pfp-page-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--pfp-primary);
}

.pfp-page-input {
    width: 60px;
    padding: 0.5rem;
    border: 2px solid var(--pfp-border);
    border-radius: 8px;
    text-align: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 1rem;
}

.pfp-page-input:focus {
    outline: none;
    border-color: var(--pfp-secondary);
}

.pfp-page-separator {
    color: var(--pfp-text-light);
}

.pfp-total-pages {
    color: var(--pfp-text-light);
}

.pfp-tools-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.pfp-separator {
    width: 1px;
    height: 30px;
    background: var(--pfp-border);
}

.pfp-nav-btn {
    padding: 0.75rem !important;
    background: white !important;
    border: 2px solid var(--pfp-border) !important;
    border-radius: 0 !important; /* Forzar completamente cuadrado */
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.5rem !important;
    font-family: 'Outfit', sans-serif !important;
    font-weight: 500 !important;
    color: var(--pfp-primary) !important;
    min-width: 44px !important;
    min-height: 44px !important;
}

.pfp-tool-btn {
    padding: 0.75rem !important;
    background: white !important;
    border: 2px solid var(--pfp-border) !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.5rem !important;
    font-family: 'Outfit', sans-serif !important;
    font-weight: 500 !important;
    color: var(--pfp-primary) !important;
    min-width: 44px !important;
    min-height: 44px !important;
}

.pfp-nav-btn svg,
.pfp-tool-btn svg {
    width: 20px !important;
    height: 20px !important;
}

.pfp-nav-btn:hover:not(:disabled),
.pfp-tool-btn:hover {
    background: var(--pfp-secondary) !important;
    border-color: var(--pfp-secondary) !important;
    color: white !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(197, 157, 95, 0.3) !important;
}

.pfp-nav-btn:hover:not(:disabled) svg,
.pfp-tool-btn:hover svg {
    stroke: white !important;
}

.pfp-nav-btn:disabled {
    opacity: 0.3 !important;
    cursor: not-allowed !important;
}

/* CRÍTICO: CSS para Turn.js - Forzar visualización */
#pfp-flipbook-1,
[id^="pfp-flipbook-"] {
    display: block !important;
    position: relative !important;
    overflow: visible !important;
}

.pfp-book {
    display: block !important;
    position: relative !important;
    margin: 0 auto !important;
}

.pfp-book,
.pfp-book .pfp-page {
    -webkit-transform-style: preserve-3d !important;
    transform-style: preserve-3d !important;
}

.pfp-book .pfp-page {
    width: 50% !important;
    height: 100% !important;
    position: absolute !important;
    display: block !important;
    page-break-after: always !important;
    float: none !important;
    background: white !important;
}

.pfp-book .pfp-page-content {
    width: 100% !important;
    height: 100% !important;
    position: relative !important;
    display: block !important;
}

.pfp-book .pfp-page img {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    display: block !important;
}

/* Turn.js clases generadas automáticamente */
.pfp-book .turn-page {
    width: 50% !important;
    height: 100% !important;
    position: absolute !important;
}

.pfp-book .even,
.pfp-book .odd {
    display: block !important;
    position: absolute !important;
}

.pfp-book .own-size {
    width: 100% !important;
    height: 100% !important;
}

/* Asegurar que las páginas se muestren lado a lado */
.pfp-book .turn-page:nth-child(even) {
    left: 0 !important;
}

.pfp-book .turn-page:nth-child(odd) {
    right: 0 !important;
}

.pfp-zoom-value {
    min-width: 50px;
    text-align: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--pfp-primary);
}

.pfp-bookmark-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--pfp-secondary);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
}

.pfp-tool-btn {
    position: relative;
}

.pfp-download-btn {
    background: white !important;
    border: 2px solid var(--pfp-border) !important;
    color: var(--pfp-primary) !important;
    text-decoration: none !important;
}

.pfp-download-btn svg {
    stroke: var(--pfp-primary) !important;
}

.pfp-download-btn:hover {
    background: var(--pfp-secondary) !important;
    border-color: var(--pfp-secondary) !important;
    color: white !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 20px rgba(197, 157, 95, 0.4) !important;
}

.pfp-download-btn:hover svg {
    stroke: white !important;
}

/* PANELES DESPLEGABLES */
.pfp-search-panel,
.pfp-bookmarks-panel,
.pfp-toc-panel,
.pfp-thumbnails-panel {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1rem 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    max-height: 400px;
    overflow-y: auto;
}

.pfp-panel-content {
    position: relative;
}

.pfp-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--pfp-border);
}

.pfp-panel-header h3 {
    margin: 0;
    font-family: 'Playfair Display', serif;
    color: var(--pfp-primary);
}

.pfp-panel-close,
.pfp-search-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--pfp-text-light);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.pfp-panel-close:hover,
.pfp-search-close:hover {
    background: rgba(0,0,0,0.1);
    color: var(--pfp-primary);
}

.pfp-search-input {
    width: calc(100% - 120px);
    padding: 0.75rem;
    border: 2px solid var(--pfp-border);
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    margin-right: 0.5rem;
}

.pfp-search-btn {
    padding: 0.75rem 1.5rem;
    background: var(--pfp-gradient);
    border: none;
    border-radius: 8px;
    color: white;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    cursor: pointer;
}

.pfp-add-bookmark {
    padding: 0.5rem 1rem;
    background: var(--pfp-secondary);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
}

/* THUMBNAILS GRID */
.pfp-thumbnails-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.pfp-thumbnail {
    position: relative;
    cursor: pointer;
    border: 2px solid var(--pfp-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
}

.pfp-thumbnail:hover {
    border-color: var(--pfp-secondary);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.pfp-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

.pfp-thumb-number {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .pfp-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .pfp-nav-section,
    .pfp-tools-section {
        justify-content: center;
    }
    
    .pfp-book {
        max-width: 100%;
    }
}

/* Visor simple */
.pfp-simple-viewer {
    min-height: 400px;
    display: block !important;
}

.pfp-page-display {
    display: block !important;
    visibility: visible !important;
}

.pfp-page-display img {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Animación de voltear página */
.pfp-page-image {
    transform-origin: center;
}

.pfp-page-flip-next {
    animation: pfp-flip-next 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.pfp-page-flip-prev {
    animation: pfp-flip-prev 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pfp-flip-next {
    0% {
        transform: perspective(1000px) rotateY(0deg);
        opacity: 1;
    }
    50% {
        transform: perspective(1000px) rotateY(-90deg);
        opacity: 0.5;
    }
    100% {
        transform: perspective(1000px) rotateY(0deg);
        opacity: 1;
    }
}

@keyframes pfp-flip-prev {
    0% {
        transform: perspective(1000px) rotateY(0deg);
        opacity: 1;
    }
    50% {
        transform: perspective(1000px) rotateY(90deg);
        opacity: 0.5;
    }
    100% {
        transform: perspective(1000px) rotateY(0deg);
        opacity: 1;
    }
}

/* Pantalla completa mejorada */
.pfp-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    background: var(--pfp-primary);
    padding: 2rem;
    overflow-y: auto;
}

.pfp-fullscreen .pfp-viewer-container {
    height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pfp-fullscreen .pfp-current-page-wrapper {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pfp-fullscreen .pfp-page-image {
    max-height: calc(100vh - 250px);
    width: auto;
}

.pfp-fullscreen .pfp-controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 100000;
}

/* Header del Flipbook */
.pfp-flipbook-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--pfp-border);
}

.pfp-flipbook-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--pfp-primary);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--pfp-primary) 0%, var(--pfp-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Contenedor del Libro */
.pfp-flipbook-container {
    position: relative;
    margin: 2rem auto;
    perspective: 2000px;
}

.pfp-flipbook {
    margin: 0 auto;
    box-shadow: var(--pfp-shadow-lg);
    border-radius: 8px;
    overflow: hidden;
}

/* Páginas del Flipbook */
.pfp-flipbook .page {
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.pfp-flipbook .page img {
    max-width: 100%;
    max-height: 100%;
    display: block;
}

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

/* Sombras de las páginas */
.pfp-flipbook .page-wrapper {
    position: relative;
}

.pfp-flipbook .hard {
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
    border: 1px solid var(--pfp-border);
}

/* Controles del Flipbook */
.pfp-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--pfp-shadow-md);
    flex-wrap: wrap;
}

/* Botones Principales */
.pfp-btn {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--pfp-transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.pfp-btn-primary {
    background: var(--pfp-gradient);
    color: white;
    box-shadow: 0 4px 16px rgba(197, 157, 95, 0.3);
}

.pfp-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(197, 157, 95, 0.4);
}

.pfp-btn-primary:active {
    transform: translateY(0);
}

.pfp-btn-secondary {
    background: white;
    color: var(--pfp-primary);
    border: 2px solid var(--pfp-border);
    box-shadow: var(--pfp-shadow-sm);
}

.pfp-btn-secondary:hover {
    background: var(--pfp-bg-light);
    border-color: var(--pfp-secondary);
    transform: translateY(-2px);
}

/* Navegación */
.pfp-nav-buttons {
    display: flex;
    gap: 0.75rem;
}

/* Contador de páginas */
.pfp-page-counter {
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    color: var(--pfp-text);
    padding: 0.75rem 1.5rem;
    background: var(--pfp-bg-light);
    border-radius: 12px;
    border: 2px solid var(--pfp-border);
    min-width: 120px;
    text-align: center;
    letter-spacing: 0.05em;
}

/* Barra de zoom */
.pfp-zoom-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.5rem;
    background: var(--pfp-bg-light);
    border-radius: 12px;
    border: 2px solid var(--pfp-border);
}

.pfp-zoom-slider {
    width: 120px;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--pfp-border), var(--pfp-secondary));
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.pfp-zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--pfp-gradient);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(197, 157, 95, 0.4);
    transition: var(--pfp-transition);
}

.pfp-zoom-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(197, 157, 95, 0.6);
}

.pfp-zoom-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--pfp-gradient);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(197, 157, 95, 0.4);
    transition: var(--pfp-transition);
}

.pfp-zoom-value {
    font-family: 'Outfit', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pfp-accent);
    min-width: 45px;
}

/* Loading spinner */
.pfp-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

.pfp-spinner {
    width: 64px;
    height: 64px;
    border: 4px solid var(--pfp-border);
    border-top: 4px solid var(--pfp-secondary);
    border-radius: 50%;
    animation: pfp-spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

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

/* Pantalla completa */
.pfp-fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background: var(--pfp-primary);
    display: flex;
    flex-direction: column;
    padding: 2rem;
}

.pfp-fullscreen .pfp-flipbook-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pfp-fullscreen .pfp-controls {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* Miniaturas */
.pfp-thumbnails {
    display: none;
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--pfp-shadow-md);
}

.pfp-thumbnails.active {
    display: block;
}

.pfp-thumbnails-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding: 0.5rem;
}

.pfp-thumbnail {
    position: relative;
    aspect-ratio: 3/4;
    cursor: pointer;
    border-radius: 8px;
    overflow: hidden;
    transition: var(--pfp-transition);
    border: 3px solid transparent;
    box-shadow: var(--pfp-shadow-sm);
}

.pfp-thumbnail:hover {
    transform: scale(1.05);
    border-color: var(--pfp-secondary);
    box-shadow: var(--pfp-shadow-md);
}

.pfp-thumbnail.active {
    border-color: var(--pfp-secondary);
    box-shadow: 0 0 0 4px rgba(197, 157, 95, 0.2);
}

.pfp-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pfp-thumb-number,
.pfp-thumbnail-number {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background: var(--pfp-gradient);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    pointer-events: none;
}

/* Scrollbar personalizado */
.pfp-thumbnails-grid::-webkit-scrollbar {
    width: 8px;
}

.pfp-thumbnails-grid::-webkit-scrollbar-track {
    background: var(--pfp-bg-light);
    border-radius: 4px;
}

.pfp-thumbnails-grid::-webkit-scrollbar-thumb {
    background: var(--pfp-gradient);
    border-radius: 4px;
}

.pfp-thumbnails-grid::-webkit-scrollbar-thumb:hover {
    background: var(--pfp-accent);
}

/* Animaciones de entrada */
@keyframes pfp-fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pfp-flipbook-wrapper {
    animation: pfp-fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive */
@media (max-width: 768px) {
    .pfp-flipbook-wrapper {
        padding: 1rem;
        margin: 1rem auto;
        border-radius: 16px;
    }
    
    .pfp-flipbook-title {
        font-size: 1.75rem;
    }
    
    .pfp-controls {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .pfp-btn {
        width: 100%;
        justify-content: center;
    }
    
    .pfp-zoom-controls {
        width: 100%;
    }
    
    .pfp-zoom-slider {
        flex: 1;
    }
    
    .pfp-thumbnails-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}

/* Modo oscuro (opcional) */
@media (prefers-color-scheme: dark) {
    .pfp-flipbook-wrapper {
        background: var(--pfp-bg-dark);
    }
    
    .pfp-flipbook-title {
        background: linear-gradient(135deg, var(--pfp-secondary) 0%, #fff 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    
    .pfp-controls,
    .pfp-thumbnails {
        background: rgba(42, 42, 62, 0.95);
        color: white;
    }
    
    .pfp-btn-secondary {
        background: var(--pfp-bg-dark);
        color: white;
        border-color: var(--pfp-secondary);
    }
}

/* Efectos de página girando */
.pfp-flipbook .turn-page {
    background-image: linear-gradient(to right, rgba(0,0,0,0.05), transparent);
}

/* Indicador de progreso */
.pfp-progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--pfp-gradient);
    transition: width 0.3s ease;
    border-radius: 0 4px 4px 0;
}

/* RESPONSIVE MOBILE */
@media (max-width: 768px) {
    .pfp-flipbook-wrapper {
        padding: 0.5rem !important;
        margin: 0 !important;
    }
    
    .pfp-book-container {
        padding: 0.5rem 0 !important;
        width: 100% !important;
        overflow-x: hidden !important;
    }
    
    .pfp-book-flip {
        max-width: 95vw !important;
        margin: 0 auto !important;
    }
    
    .pfp-toolbar {
        flex-wrap: wrap !important;
        gap: 0.5rem !important;
        padding: 0.5rem !important;
    }
    
    .pfp-nav-section {
        flex: 1 1 100% !important;
        justify-content: center !important;
    }
    
    .pfp-tools-section {
        flex: 1 1 100% !important;
        justify-content: center !important;
        flex-wrap: wrap !important;
    }
}

@media (max-width: 480px) {
    .pfp-book-flip {
        max-width: 98vw !important;
    }
}