/* =============================================
   Animaciones y Transiciones
   Nelson Vásquez - Candidatura Rector PUCV
   ============================================= */

/* ===== Fade In Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== Scale Animations ===== */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* ===== Slide Animations ===== */
@keyframes slideInFromLeft {
    from {
        transform: translateX(-100%);
    }

    to {
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

/* ===== Shine Effect ===== */
@keyframes shine {
    from {
        background-position: -200% center;
    }

    to {
        background-position: 200% center;
    }
}

/* ===== Number Counter Animation ===== */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Animation Classes ===== */
.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.6s ease forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease forwards;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease forwards;
}

/* ===== Scroll Animation Classes ===== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate--left {
    transform: translateX(-30px);
}

.scroll-animate--left.visible {
    transform: translateX(0);
}

.scroll-animate--right {
    transform: translateX(30px);
}

.scroll-animate--right.visible {
    transform: translateX(0);
}

.scroll-animate--scale {
    transform: scale(0.95);
}

.scroll-animate--scale.visible {
    transform: scale(1);
}

/* ===== Delay Classes ===== */
.delay-100 {
    transition-delay: 100ms;
}

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

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

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

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

.delay-600 {
    transition-delay: 600ms;
}

.delay-700 {
    transition-delay: 700ms;
}

.delay-800 {
    transition-delay: 800ms;
}

/* ===== Stagger Animation for Children ===== */
.stagger-children>* {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.visible>*:nth-child(1) {
    transition-delay: 0ms;
}

.stagger-children.visible>*:nth-child(2) {
    transition-delay: 100ms;
}

.stagger-children.visible>*:nth-child(3) {
    transition-delay: 200ms;
}

.stagger-children.visible>*:nth-child(4) {
    transition-delay: 300ms;
}

.stagger-children.visible>*:nth-child(5) {
    transition-delay: 400ms;
}

.stagger-children.visible>*:nth-child(6) {
    transition-delay: 500ms;
}

.stagger-children.visible>*:nth-child(7) {
    transition-delay: 600ms;
}

.stagger-children.visible>*:nth-child(8) {
    transition-delay: 700ms;
}

.stagger-children.visible>*:nth-child(9) {
    transition-delay: 800ms;
}

.stagger-children.visible>* {
    opacity: 1;
    transform: translateY(0);
}

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

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

.hover-glow {
    transition: box-shadow var(--transition-normal);
}

.hover-glow:hover {
    box-shadow: var(--shadow-gold);
}

.hover-scale {
    transition: transform var(--transition-fast);
}

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

/* ===== Loading States ===== */
.skeleton {
    background: linear-gradient(90deg,
            var(--color-gris-claro) 25%,
            #e5e5e5 50%,
            var(--color-gris-claro) 75%);
    background-size: 200% 100%;
    animation: shine 1.5s infinite;
}

/* ===== Timeline Specific Animations ===== */
.timeline__item {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline__item:nth-child(odd) {
    transform: translateX(-50px);
}

.timeline__item:nth-child(even) {
    transform: translateX(50px);
}

.timeline__item.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ===== Stat Counter Animation ===== */
.stat-card__number {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.stat-card.visible .stat-card__number {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Nav Active State Animation ===== */
.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-dorado);
    transition: width 0.3s ease, left 0.3s ease;
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
    left: 0;
}

/* ===== Button Ripple Effect ===== */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::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 ease, height 0.6s ease;
}

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

/* ===== Image Placeholder Pulse ===== */
.image-placeholder {
    animation: pulse 2s ease-in-out infinite;
}

/* ===== Floating Animation ===== */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* ===== Organic Photo Interaction ===== */
.organic-photo {
    transition: all var(--transition-slow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.organic-photo img {
    transition: transform var(--transition-slow);
}

.organic-photo:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), 0 20px 40px rgba(29, 113, 184, 0.2);
}

.organic-photo:hover img {
    transform: scale(1.05);
}

.organic-photo::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right,
            transparent,
            rgba(255, 255, 255, 0.3),
            transparent);
    transform: skewX(-25deg);
    transition: 0.7s;
}

.organic-photo:hover::after {
    left: 125%;
}

/* ===== Typing Animation ===== */
@keyframes typing {
    from {
        width: 0
    }

    to {
        width: 100%
    }
}

@keyframes blink-caret {

    from,
    to {
        border-color: transparent
    }

    50% {
        border-color: var(--color-dorado)
    }
}

.typing-container {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--color-dorado);
    width: 0;
    max-width: max-content;
    vertical-align: bottom;
}

.visible .typing-container {
    animation:
        typing 3s steps(35, end) forwards,
        blink-caret .75s step-end infinite;
}

/* Fix for mobile - stop typing if it would overflow */
@media (max-width: 768px) {
    .typing-container {
        white-space: normal;
        border-right: none;
        width: auto;
        display: block;
    }

    .visible .typing-container {
        animation: fadeInUp 0.8s ease forwards;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .scroll-animate {
        opacity: 1;
        transform: none;
    }

    .timeline__item {
        opacity: 1;
        transform: none;
    }
}