/**
 * @fileoverview Estilos de Animaciones y Transiciones
 * Contiene todas las animaciones CSS, keyframes y utilidades
 * para efectos visuales en la aplicación.
 * @version 1.0.0
 */

/* ===================================
   VARIABLES DE ANIMACIÓN
   =================================== */

:root {
    /* Duraciones */
    --animation-duration-fast: 200ms;
    --animation-duration-normal: 400ms;
    --animation-duration-slow: 600ms;
    --animation-duration-slower: 800ms;
    
    /* Timing functions */
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-elastic: cubic-bezier(0.68, -0.6, 0.32, 1.6);
}

/* ===================================
   ANIMACIONES BASE (SCROLL)
   =================================== */

/* Estado inicial - elementos ocultos */
[data-animate],
.animate-fade-in,
.animate-fade-in-up,
.animate-fade-in-down,
.animate-fade-in-left,
.animate-fade-in-right,
.animate-zoom-in,
.animate-zoom-out,
.animate-flip-up,
.animate-slide-up {
    opacity: 0;
    will-change: opacity, transform;
}

/* Estado animado */
.animate-visible {
    opacity: 1 !important;
    transform: none !important;
}

/* ===================================
   KEYFRAMES - ANIMACIONES PRINCIPALES
   =================================== */

/* Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Left */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fade In Right */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Zoom In */
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Zoom Out */
@keyframes zoomOut {
    from {
        opacity: 0;
        transform: scale(1.1);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Flip Up */
@keyframes flipUp {
    from {
        opacity: 0;
        transform: perspective(1000px) rotateX(45deg);
    }
    to {
        opacity: 1;
        transform: perspective(1000px) rotateX(0);
    }
}

/* Slide Up */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Bounce */
@keyframes bounce {
    0%, 20%, 53%, 100% {
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
        transform: translateY(0);
    }
    40%, 43% {
        animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
        transform: translateY(-20px);
    }
    70% {
        animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
        transform: translateY(-10px);
    }
    80% {
        transform: translateY(0);
    }
    90% {
        transform: translateY(-4px);
    }
}

/* Pulse */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Shake */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Spin */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Float */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Glow */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.8);
    }
}

/* Shimmer (para loading states) */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* ===================================
   CLASES DE UTILIDAD - ANIMACIONES
   =================================== */

/* Aplicar animaciones directamente */
.anim-fade-in {
    animation: fadeIn var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-fade-in-up {
    animation: fadeInUp var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-fade-in-down {
    animation: fadeInDown var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-fade-in-left {
    animation: fadeInLeft var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-fade-in-right {
    animation: fadeInRight var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-zoom-in {
    animation: zoomIn var(--animation-duration-normal) var(--ease-out) forwards;
}

.anim-bounce {
    animation: bounce 1s var(--ease-in-out);
}

.anim-pulse {
    animation: pulse 2s var(--ease-in-out) infinite;
}

.anim-shake {
    animation: shake 0.5s var(--ease-in-out);
}

.anim-spin {
    animation: spin 1s linear infinite;
}

.anim-float {
    animation: float 3s ease-in-out infinite;
}

.anim-glow {
    animation: glow 2s ease-in-out infinite;
}

/* ===================================
   DELAYS DE ANIMACIÓN
   =================================== */

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* ===================================
   DURACIONES DE ANIMACIÓN
   =================================== */

.duration-fast { animation-duration: var(--animation-duration-fast) !important; }
.duration-normal { animation-duration: var(--animation-duration-normal) !important; }
.duration-slow { animation-duration: var(--animation-duration-slow) !important; }
.duration-slower { animation-duration: var(--animation-duration-slower) !important; }

/* ===================================
   TRANSICIONES HOVER
   =================================== */

/* Transición base para todos los elementos interactivos */
.transition-all {
    transition: all var(--animation-duration-normal) var(--ease-out);
}

.transition-transform {
    transition: transform var(--animation-duration-normal) var(--ease-out);
}

.transition-opacity {
    transition: opacity var(--animation-duration-normal) var(--ease-out);
}

.transition-colors {
    transition: color var(--animation-duration-fast) var(--ease-out),
                background-color var(--animation-duration-fast) var(--ease-out),
                border-color var(--animation-duration-fast) var(--ease-out);
}

.transition-shadow {
    transition: box-shadow var(--animation-duration-normal) var(--ease-out);
}

/* ===================================
   EFECTOS HOVER MEJORADOS
   =================================== */

/* Elevación al hover */
.hover-lift {
    transition: transform var(--animation-duration-normal) var(--ease-out),
                box-shadow var(--animation-duration-normal) var(--ease-out);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Escala suave */
.hover-scale {
    transition: transform var(--animation-duration-normal) var(--ease-out);
}

.hover-scale:hover {
    transform: scale(1.02);
}

/* Brillo */
.hover-glow {
    transition: box-shadow var(--animation-duration-normal) var(--ease-out);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
}

/* Rotación sutil */
.hover-rotate {
    transition: transform var(--animation-duration-normal) var(--ease-out);
}

.hover-rotate:hover {
    transform: rotate(3deg);
}

/* Efecto de presión */
.hover-press:active {
    transform: scale(0.98);
}

/* ===================================
   SKELETON LOADING
   =================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text:last-child {
    width: 80%;
}

.skeleton-circle {
    border-radius: 50%;
}

.skeleton-card {
    height: 300px;
    border-radius: 12px;
}

/* ===================================
   LOADING STATES
   =================================== */

/* Spinner básico */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color, #667eea);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

/* Dots loading */
.dots-loading {
    display: flex;
    gap: 8px;
}

.dots-loading span {
    width: 10px;
    height: 10px;
    background: var(--primary-color, #667eea);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite both;
}

.dots-loading span:nth-child(1) { animation-delay: -0.32s; }
.dots-loading span:nth-child(2) { animation-delay: -0.16s; }
.dots-loading span:nth-child(3) { animation-delay: 0s; }

/* ===================================
   MICRO-INTERACCIONES
   =================================== */

/* Botón con feedback visual */
.btn-interactive {
    position: relative;
    overflow: hidden;
    transition: all var(--animation-duration-normal) var(--ease-out);
}

.btn-interactive::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-interactive:active::after {
    width: 300px;
    height: 300px;
}

/* Input con focus animado */
.input-animated {
    transition: border-color var(--animation-duration-fast) var(--ease-out),
                box-shadow var(--animation-duration-fast) var(--ease-out);
}

.input-animated:focus {
    border-color: var(--primary-color, #667eea);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

/* Checkbox/Toggle animado */
.toggle-animated {
    position: relative;
    width: 50px;
    height: 26px;
    background: #ccc;
    border-radius: 26px;
    cursor: pointer;
    transition: background var(--animation-duration-fast) var(--ease-out);
}

.toggle-animated::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform var(--animation-duration-fast) var(--ease-bounce);
}

.toggle-animated.active {
    background: var(--primary-color, #667eea);
}

.toggle-animated.active::after {
    transform: translateX(24px);
}

/* ===================================
   RIPPLE EFFECT
   =================================== */

.ripple {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===================================
   SCROLL INDICATOR
   =================================== */

.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color, #667eea), #764ba2);
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ===================================
   PAGE TRANSITIONS
   =================================== */

.page-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--animation-duration-slow) var(--ease-out),
                transform var(--animation-duration-slow) var(--ease-out);
}

.page-exit {
    opacity: 1;
}

.page-exit-active {
    opacity: 0;
    transition: opacity var(--animation-duration-fast) var(--ease-in);
}

/* ===================================
   ANIMACIONES ESPECÍFICAS DE CARDS
   =================================== */

/* Card hover mejorado */
.card-animated {
    transition: transform var(--animation-duration-normal) var(--ease-out),
                box-shadow var(--animation-duration-normal) var(--ease-out);
}

.card-animated:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Imagen dentro de card */
.card-animated .card-image img {
    transition: transform var(--animation-duration-slow) var(--ease-out);
}

.card-animated:hover .card-image img {
    transform: scale(1.08);
}

/* ===================================
   MEDIA QUERIES - REDUCIR MOVIMIENTO
   =================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .parallax {
        transform: none !important;
    }
}