/* ==========================================
   CARD ROYALE - ANIMATIONS CSS
   Keyframes y transiciones con soporte iPhone
   ========================================== */

/* ==========================================
   FADE IN / OUT
   ========================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* ==========================================
   SLIDE IN / OUT
   ========================================== */

@keyframes slideInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(30px);
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        -webkit-transform: translateY(-30px);
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes slideOutRight {
    from {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }
    to {
        opacity: 0;
        -webkit-transform: translateX(100%);
        transform: translateX(100%);
    }
}

/* ==========================================
   ESCALA
   ========================================== */

@keyframes scaleIn {
    from {
        opacity: 0;
        -webkit-transform: scale(0.8);
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
    50% {
        -webkit-transform: translateY(-10px);
        transform: translateY(-10px);
    }
}

/* ==========================================
   ROTACIÓN
   ========================================== */

@keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes rotate {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

/* ==========================================
   ANIMACIONES SOBRE (ENVELOPE)
   ========================================== */

@keyframes envelopeCut {
    0% {
        -webkit-transform: scaleX(1);
        transform: scaleX(1);
        opacity: 1;
    }
    50% {
        -webkit-transform: scaleX(1.05) rotateZ(2deg);
        transform: scaleX(1.05) rotateZ(2deg);
    }
    100% {
        -webkit-transform: translateX(200%) rotateZ(10deg);
        transform: translateX(200%) rotateZ(10deg);
        opacity: 0;
    }
}

@keyframes cutLine {
    0% {
        -webkit-transform: translateX(-100%);
        transform: translateX(-100%);
    }
    100% {
        -webkit-transform: translateX(100%);
        transform: translateX(100%);
    }
}

@keyframes envelopeShake {
    0%, 100% {
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }
    25% {
        -webkit-transform: translateX(-5px);
        transform: translateX(-5px);
    }
    75% {
        -webkit-transform: translateX(5px);
        transform: translateX(5px);
    }
}

/* ==========================================
   ANIMACIONES CARTA (CARD) - FLIP CON SOPORTE iPHONE
   ========================================== */

@keyframes cardAppear {
    from {
        opacity: 0;
        -webkit-transform: scale(0.7) rotateX(90deg);
        transform: scale(0.7) rotateX(90deg);
    }
    to {
        opacity: 1;
        -webkit-transform: scale(1) rotateX(0deg);
        transform: scale(1) rotateX(0deg);
    }
}

/* CARD FLIP - CON SOPORTE WEBKIT COMPLETO */
@keyframes cardFlip {
    0% {
        -webkit-transform: rotateY(0deg);
        transform: rotateY(0deg);
    }
    100% {
        -webkit-transform: rotateY(180deg);
        transform: rotateY(180deg);
    }
}

/* Versión alternativa para Safari/iPhone si es necesario */
@-webkit-keyframes cardFlip {
    0% {
        -webkit-transform: rotateY(0deg);
    }
    100% {
        -webkit-transform: rotateY(180deg);
    }
}

@keyframes cardGlow {
    0%, 100% {
        -webkit-box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
    }
    50% {
        -webkit-box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
    }
}

@keyframes cardShimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ==========================================
   ANIMACIONES COLECCIÓN (COLLECTION)
   ========================================== */

@keyframes stackBuild {
    0% {
        -webkit-transform: translateY(-20px);
        transform: translateY(-20px);
        opacity: 0;
    }
    100% {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes stackFall {
    0% {
        -webkit-transform: translateY(0) scale(1);
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    100% {
        -webkit-transform: translateY(100px) scale(0.9);
        transform: translateY(100px) scale(0.9);
        opacity: 0;
    }
}

/* ==========================================
   ANIMACIONES PARTÍCULAS
   ========================================== */

@keyframes particleFloat {
    0% {
        -webkit-transform: translateY(0) translateX(0);
        transform: translateY(0) translateX(0);
        opacity: 1;
    }
    100% {
        -webkit-transform: translateY(-100px) translateX(var(--tx, 0));
        transform: translateY(-100px) translateX(var(--tx, 0));
        opacity: 0;
    }
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
}

/* ==========================================
   ANIMACIONES TEXTO
   ========================================== */

@keyframes textAppear {
    from {
        opacity: 0;
        -webkit-transform: translateY(10px);
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0);
    }
}

@keyframes glitch {
    0% {
        text-shadow: 3px 0 0 #ff006e, -3px -3px 0 #00f5ff;
    }
    25% {
        text-shadow: 3px 3px 0 #ff006e, -3px 0 0 #00f5ff;
    }
    50% {
        text-shadow: -3px 0 0 #ff006e, 3px 3px 0 #00f5ff;
    }
    75% {
        text-shadow: -3px 3px 0 #ff006e, 3px 0 0 #00f5ff;
    }
    100% {
        text-shadow: 3px 0 0 #ff006e, -3px -3px 0 #00f5ff;
    }
}

/* ==========================================
   CLASES DE ANIMACIÓN
   ========================================== */

.animate-fade-in {
    animation: fadeIn var(--transition-base);
}

.animate-fade-out {
    animation: fadeOut var(--transition-base);
}

.animate-slide-up {
    animation: slideInUp var(--transition-base);
}

.animate-scale-in {
    animation: scaleIn var(--transition-base);
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
    animation: bounce 0.6s ease-in-out;
}

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

.animate-card-appear {
    animation: cardAppear 0.6s ease-out;
}

.animate-card-glow {
    animation: cardGlow 2s ease-in-out infinite;
}

.animate-stack-build {
    animation: stackBuild 0.4s ease-out;
}

.section-entering {
    -webkit-animation: sectionEnter 280ms cubic-bezier(0.22, 1, 0.36, 1);
    animation: sectionEnter 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

@-webkit-keyframes sectionEnter {
    from {
        opacity: 0;
        -webkit-transform: translate3d(0, 10px, 0);
        transform: translate3d(0, 10px, 0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@keyframes sectionEnter {
    from {
        opacity: 0;
        -webkit-transform: translate3d(0, 10px, 0);
        transform: translate3d(0, 10px, 0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

/* ==========================================
   SOPORTE 3D PARA iPhone - PERSPECTIVA
   ========================================== */

.card-container,
.envelope-container,
[style*="perspective"] {
    -webkit-perspective: 1000;
    -webkit-perspective: 1000px;
    perspective: 1000px;
}

.card-flip-element,
.card,
[class*="flip"] {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 0%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ==========================================
   TRANSICIONES SUAVES PARA TODO
   NO se aplica a elementos de carta para no interferir con flip
   ========================================== */

*:not(.card-inner):not(.card-back):not(.card-front):not(.stack-card):not(.card-flip) {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: var(--transition-fast);
    transition-timing-function: ease;
    -webkit-tap-highlight-color: transparent;
}

button {
    transition-property: background-color, border-color, color, box-shadow, opacity, transform;
    -webkit-user-select: none;
}

/* ==========================================
   DESACTIVAR ANIMACIONES PARA USUARIOS QUE LO PREFIEREN
   ========================================== */

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

/* ==========================================
   OPTIMIZACIONES PARA MOBILE (iOS)
   ========================================== */

@supports (-webkit-touch-callout: none) {
    /* iPhone/iPad specific */
    * {
        -webkit-user-select: none;
        -webkit-touch-callout: none;
    }
    
    button, a, [role="button"] {
        -webkit-user-select: none;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    .animate-card-flip,
    [class*="flip"] {
        -webkit-perspective: 1000px;
        perspective: 1000px;
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }

    .section,
    .dashboard-pack-card,
    .collection-card,
    .shop-card,
    .gacha-result-card,
    .envelope-image,
    .envelope-modal-image,
    .stack-card,
    .card-inner,
    .card-back,
    .card-front {
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
    }

    .envelope-3d-container,
    .envelope-3d-perspective,
    .card-stack-container,
    .stack-card {
        -webkit-perspective: 1200px;
        perspective: 1200px;
    }

    .envelope-3d-cube,
    .card-stack,
    .stack-card,
    .card-inner {
        -webkit-transform-style: preserve-3d;
        transform-style: preserve-3d;
        will-change: -webkit-transform, transform;
    }

    .card-back,
    .card-front {
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
    }

    .card-back {
        -webkit-transform: translateZ(1px) rotateY(0deg);
        transform: translateZ(1px) rotateY(0deg);
    }

    .card-front {
        -webkit-transform: translateZ(1px) rotateY(180deg);
        transform: translateZ(1px) rotateY(180deg);
    }

    .stack-card.flipped .card-inner {
        -webkit-transform: translateZ(0) rotateY(180deg);
        transform: translateZ(0) rotateY(180deg);
    }

    .section-entering {
        -webkit-animation-duration: 340ms;
        animation-duration: 340ms;
    }

    .mobile-bottom-nav {
        -webkit-transform: translate3d(-50%, 0, 0);
        transform: translate3d(-50%, 0, 0);
    }
}

/* ==========================================
   DARK MODE / LIGHT MODE (Soporte futuro)
   ========================================== */

@media (prefers-color-scheme: light) {
    /* Aquí irían los colores para light mode */
}