/* Flipbook 3D Creator - CSS Avanzado con Efectos 3D v1.3.0 */

.flipbook-container {
    position: relative;
    margin: 20px auto;
    padding: 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    perspective: 1200px;
    overflow: hidden;
}

.flipbook-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.flipbook-book {
    position: relative;
    width: 100%;
    height: 600px;
    margin: 0 auto;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0.0, 0.2, 1);
}

.flipbook-page {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: all 0.8s cubic-bezier(0.4, 0.0, 0.2, 1);
    display: none; /* Ocultas por defecto */
}

.flipbook-page.current {
    display: block;
    transform: translateZ(0) rotateY(0deg);
    z-index: 10;
    opacity: 1;
}

.flipbook-page.flipping-out {
    display: block;
    animation: flipOut 0.6s ease-out forwards;
}

.flipbook-page.flipping-in {
    display: block;
    animation: flipIn 0.6s ease-in forwards;
}

.flipbook-page img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

/* Eliminar zoom hover */
/* .flipbook-page:hover img { transform: scale(1.02); } */

@keyframes flipOut {
    0% { 
        transform: translateZ(0) rotateY(0deg) scale(1);
        opacity: 1;
    }
    100% { 
        transform: translateZ(0) rotateY(0deg) scale(0.95);
        opacity: 0;
    }
}

@keyframes flipIn {
    0% { 
        transform: translateZ(-10px) scale(0.98);
        opacity: 0;
    }
    100% { 
        transform: translateZ(0) scale(1);
        opacity: 1;
    }
}

/* Controles con efectos 3D */
.flipbook-controls {
    position: relative;
    text-align: center;
    margin: 20px 0;
    padding: 15px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 20;
}

.flipbook-btn {
    background: linear-gradient(145deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.flipbook-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
    z-index: -1;
}

.flipbook-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.flipbook-btn:hover::before {
    left: 100%;
}

.flipbook-btn:active {
    transform: translateY(0) scale(0.98);
}

.flipbook-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.flipbook-page-info {
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Temas avanzados */
.flipbook-theme-dark {
    background: linear-gradient(135deg, #232526 0%, #414345 100%);
    color: white;
}

.flipbook-theme-dark .flipbook-controls {
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(15px);
}

.flipbook-theme-dark .flipbook-btn {
    background: linear-gradient(145deg, #ff6b6b 0%, #ee5a24 100%);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.flipbook-theme-dark .flipbook-btn:hover {
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.6);
}

.flipbook-theme-light {
    background: linear-gradient(135deg, #fdfcfb 0%, #e2d1c3 100%);
}

.flipbook-theme-light .flipbook-controls {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
}

.flipbook-theme-light .flipbook-btn {
    background: linear-gradient(145deg, #56ab2f 0%, #a8e6cf 100%);
    box-shadow: 0 4px 15px rgba(86, 171, 47, 0.4);
}

.flipbook-theme-light .flipbook-btn:hover {
    box-shadow: 0 8px 25px rgba(86, 171, 47, 0.6);
}

/* Modo spread (libro abierto) */
.flipbook-container[data-mode="spread"] .flipbook-book {
    height: 400px;
    transform: rotateX(10deg);
}

.flipbook-container[data-mode="spread"] .flipbook-page {
    width: 48%;
    transform-origin: right center;
}

.flipbook-container[data-mode="spread"] .flipbook-page:nth-child(even) {
    right: 52%;
    transform-origin: left center;
}

.flipbook-container[data-mode="spread"] .flipbook-page:nth-child(odd) {
    left: 52%;
}

/* Efectos de profundidad */
.flipbook-page::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(to left, rgba(0,0,0,0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.flipbook-page.current::after {
    opacity: 1;
}

/* Indicador de progreso circular */
.flipbook-progress {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    z-index: 30;
}

.progress-circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(#667eea 0deg, #764ba2 var(--progress, 0deg), rgba(255,255,255,0.2) var(--progress, 0deg));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* Zoom en hover */
.flipbook-page.zoom-enabled:hover {
    transform: scale(1.05) translateZ(20px);
    z-index: 15;
}

/* Loading spinner */
.flipbook-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 25;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.3);
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .flipbook-container {
        margin: 10px;
        padding: 10px;
        perspective: 800px;
    }
    
    .flipbook-book {
        height: 400px;
    }
    
    .flipbook-controls {
        flex-direction: column;
        gap: 10px;
        padding: 10px;
    }
    
    .flipbook-btn {
        padding: 10px 20px;
        font-size: 12px;
    }
    
    .flipbook-container[data-mode="spread"] .flipbook-book {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .flipbook-book {
        height: 300px;
    }
    
    .flipbook-container[data-mode="spread"] .flipbook-page {
        width: 100%;
        position: relative !important;
        left: auto !important;
        right: auto !important;
    }
}

/* Efectos de entrada suaves */
.flipbook-container {
    animation: fadeInScale 0.8s cubic-bezier(0.4, 0.0, 0.2, 1);
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}