/* ==========================================
   ANIMATIONS CSS - SNTSS Sección II
   Keyframes, Intersection Observer Animations
   ========================================== */

/* ===================================================
   KEYFRAME ANIMATIONS
   =================================================== */

/* 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);
    }
}

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

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

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

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

/* Pulse Ring (for play buttons, badges) */
@keyframes pulseRing {
    0% {
        transform: scale(0.8);
        opacity: 0.6;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

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

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

/* 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);
    }
}

/* Blink (for live indicators) */
@keyframes blink {
    0%, 100% {
        opacity: 1;
        filter: saturate(1);
    }
    50% {
        opacity: 0.7;
        filter: saturate(1.5);
    }
}

/* Gradient Shift */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Ripple Effect */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

/* Float */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Shimmer (loading effect) */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ===================================================
   ANIMATION UTILITY CLASSES
   =================================================== */

/* Fade In Up Animation */
.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.8s ease-out forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.8s ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.8s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out forwards;
}

/* Animation Delays */
.animation-delay-100 {
    animation-delay: 100ms;
}

.animation-delay-200 {
    animation-delay: 200ms;
}

.animation-delay-300 {
    animation-delay: 300ms;
}

.animation-delay-400 {
    animation-delay: 400ms;
}

.animation-delay-500 {
    animation-delay: 500ms;
}

/* ===================================================
   INTERSECTION OBSERVER ANIMATIONS
   =================================================== */

/* Elements start hidden */
.animate-on-scroll {
    opacity: 0;
}

/* When visible, trigger animation */
.animate-on-scroll.is-visible {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* Alternative scroll animations */
.scroll-fade {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.scroll-fade.is-visible {
    opacity: 1;
}

.scroll-slide-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.scroll-slide-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-slide-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s ease-out;
}

.scroll-slide-left.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-slide-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s ease-out;
}

.scroll-slide-right.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s ease-out;
}

.scroll-scale.is-visible {
    opacity: 0.8;
    transform: scale(1);
}

/* ===================================================
   SPECIAL EFFECTS
   =================================================== */

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--g-200);
    border-top-color: var(--color-verde);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

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

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

/* Pulse Animation (for badges, notifications) */
.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

/* Live Indicator */
.live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-rojo);
    color: var(--g-white);
    border-radius: var(--radius-full);
    font-size: var(--font-sm);
    font-weight: var(--font-semibold);
    animation: blink 1s infinite;
    box-shadow: var(--shadow-rojo);
}

.live-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--g-white);
    border-radius: var(--radius-full);
    animation: pulseRing 2s infinite;
}

/* Shimmer Loading Effect */
.shimmer-loading {
    background: linear-gradient(
        90deg,
        var(--g-200) 0%,
        var(--g-100) 50%,
        var(--g-200) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Floating Animation */
.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* Gradient Animation */
.gradient-animation {
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
}

/* ===================================================
   HOVER EFFECTS
   =================================================== */

/* Lift on Hover */
.hover-lift {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Grow on Hover */
.hover-grow {
    transition: transform var(--transition-fast);
}

.hover-grow:hover {
    transform: scale(1.05);
}

/* Glow on Hover */
.hover-glow {
    transition: box-shadow var(--transition-normal);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(29, 78, 216, 0.3);
}

/* Shine Effect on Hover */
.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 0;
    height: 200%;
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(45deg);
    transition: all var(--transition-slow);
}

.hover-shine:hover::before {
    width: 200%;
}

/* Ripple Effect on Click */
.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease-out, height 0.6s ease-out;
}

.ripple-effect:active::after {
    width: 300px;
    height: 300px;
}

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

.skeleton {
    background: var(--g-200);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.5),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

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

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

.skeleton-title {
    height: 2rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-card {
    height: 200px;
}

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

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

.page-transition-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.4s ease-out;
}

.page-transition-exit {
    opacity: 1;
}

.page-transition-exit-active {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

/* ===================================================
   STAGGER ANIMATIONS (for lists)
   =================================================== */

.stagger-animation > *:nth-child(1) { animation-delay: 0ms; }
.stagger-animation > *:nth-child(2) { animation-delay: 100ms; }
.stagger-animation > *:nth-child(3) { animation-delay: 200ms; }
.stagger-animation > *:nth-child(4) { animation-delay: 300ms; }
.stagger-animation > *:nth-child(5) { animation-delay: 400ms; }
.stagger-animation > *:nth-child(6) { animation-delay: 500ms; }
.stagger-animation > *:nth-child(7) { animation-delay: 600ms; }
.stagger-animation > *:nth-child(8) { animation-delay: 700ms; }
.stagger-animation > *:nth-child(9) { animation-delay: 800ms; }
.stagger-animation > *:nth-child(10) { animation-delay: 900ms; }

/* ===================================================
   ACCESSIBILITY - Reduced Motion
   =================================================== */

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

    .animate-on-scroll,
    .scroll-fade,
    .scroll-slide-up,
    .scroll-slide-left,
    .scroll-slide-right,
    .scroll-scale {
        opacity: 1 !important;
        transform: none !important;
    }
}