/* ============================================
   ANIMATIONS.CSS - Animaciones y Transiciones
   ============================================ */

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Transiciones globales */
* {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   ANIMACIÓN FADE-IN-UP
   ============================================ */

/* Estado inicial de las cards */
.book-card {
    opacity: 0;
    transform: translateY(30px);
}

/* Estado animado */
.book-card.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Keyframes */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   DELAYS ESCALONADOS
   ============================================ */

.book-card:nth-child(1) { animation-delay: 0.1s; }
.book-card:nth-child(2) { animation-delay: 0.2s; }
.book-card:nth-child(3) { animation-delay: 0.3s; }
.book-card:nth-child(4) { animation-delay: 0.4s; }
.book-card:nth-child(5) { animation-delay: 0.5s; }
.book-card:nth-child(6) { animation-delay: 0.6s; }
.book-card:nth-child(7) { animation-delay: 0.7s; }

/* ============================================
   ACCESIBILIDAD - REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    /* Cards aparecen directamente sin animación */
    .book-card {
        opacity: 1;
        transform: none;
    }
}