/* ===================================================
   BRAIN2026 CONFERENCE WEBSITE
   Animations Stylesheet (animations.css)
   =================================================== */

/* ===================================================
   FADE ANIMATIONS
   =================================================== */

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

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

@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);
    }
}

/* ===================================================
   SLIDE ANIMATIONS
   =================================================== */

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===================================================
   SCALE ANIMATIONS
   =================================================== */

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    14% {
        transform: scale(1.1);
    }
    28% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.1);
    }
    70% {
        transform: scale(1);
    }
}

/* ===================================================
   BOUNCE ANIMATIONS
   =================================================== */

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes bounceUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(0);
    }
}

/* ===================================================
   FLIP ANIMATIONS
   =================================================== */

@keyframes flip {
    0% {
        transform: perspective(400px) rotateY(0);
    }
    100% {
        transform: perspective(400px) rotateY(360deg);
    }
}

@keyframes flipInX {
    0% {
        opacity: 0;
        transform: perspective(400px) rotateX(90deg);
    }
    100% {
        opacity: 1;
        transform: perspective(400px) rotateX(0);
    }
}

/* ===================================================
   ROTATE ANIMATIONS
   =================================================== */

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

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

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

/* ===================================================
   FLOAT & FLOATING ANIMATIONS
   =================================================== */

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

@keyframes floatUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes floatSlow {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
    }
    25% {
        transform: translateY(-20px) translateX(10px);
    }
    50% {
        transform: translateY(-40px) translateX(-10px);
    }
    75% {
        transform: translateY(-20px) translateX(5px);
    }
}

@keyframes drift {
    0%, 100% {
        transform: translateX(0px);
    }
    50% {
        transform: translateX(20px);
    }
}

/* ===================================================
   SHIMMER & SHINE ANIMATIONS
   =================================================== */

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

@keyframes shine {
    0% {
        background-position: -1200px 0;
    }
    100% {
        background-position: 1200px 0;
    }
}

/* ===================================================
   GLOW ANIMATIONS
   =================================================== */

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(23, 9, 110, 0.5), 0 0 10px rgba(23, 9, 110, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(23, 9, 110, 0.8), 0 0 30px rgba(23, 9, 110, 0.5);
    }
}

@keyframes glowText {
    0%, 100% {
        text-shadow: 0 0 10px rgba(23, 9, 110, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(23, 9, 110, 0.8), 0 0 30px rgba(23, 9, 110, 0.5);
    }
}

/* ===================================================
   BACKGROUND ANIMATIONS
   =================================================== */

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes gradientFlow {
    0% {
        background-position: 0% 0%;
    }
    100% {
        background-position: 100% 100%;
    }
}

/* ===================================================
   SCROLL ANIMATIONS
   =================================================== */

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

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

/* ===================================================
   COUNTER ANIMATIONS
   =================================================== */

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

/* ===================================================
   TIMELINE ANIMATIONS
   =================================================== */

@keyframes timelineAppear {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes timelineDot {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

@keyframes rippleOut {
    0% {
        box-shadow: 0 0 0 0 rgba(23, 9, 110, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(23, 9, 110, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(23, 9, 110, 0);
    }
}

/* ===================================================
   ATTENTION SEEKERS
   =================================================== */

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

@keyframes swing {
    20% {
        transform: rotate(15deg);
    }
    40% {
        transform: rotate(-10deg);
    }
    60% {
        transform: rotate(5deg);
    }
    80% {
        transform: rotate(-5deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

@keyframes wobble {
    0%, 100% {
        transform: translateX(0);
    }
    15% {
        transform: translateX(-5px) rotate(-5deg);
    }
    30% {
        transform: translateX(3px) rotate(3deg);
    }
    45% {
        transform: translateX(-3px) rotate(-3deg);
    }
    60% {
        transform: translateX(2px) rotate(2deg);
    }
    75% {
        transform: translateX(-1px) rotate(-1deg);
    }
}

@keyframes jello {
    0%, 11.1%, 100% {
        transform: translate3d(0, 0, 0);
    }
    22.2% {
        transform: skewX(-12.5deg) skewY(-12.5deg);
    }
    33.3% {
        transform: skewX(6.25deg) skewY(6.25deg);
    }
    44.4% {
        transform: skewX(-3.125deg) skewY(-3.125deg);
    }
    55.5% {
        transform: skewX(1.5625deg) skewY(1.5625deg);
    }
    66.6% {
        transform: skewX(-0.78125deg) skewY(-0.78125deg);
    }
    77.7% {
        transform: skewX(0.390625deg) skewY(0.390625deg);
    }
    88.8% {
        transform: skewX(-0.1953125deg) skewY(-0.1953125deg);
    }
}

/* ===================================================
   CARD HOVER ANIMATIONS
   =================================================== */

@keyframes cardLift {
    to {
        transform: translateY(-10px);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    }
}

@keyframes cardGlow {
    0%, 100% {
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }
    50% {
        box-shadow: 0 20px 25px -5px rgba(23, 9, 110, 0.1);
    }
}

/* ===================================================
   MODAL & POPUP ANIMATIONS
   =================================================== */

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideOutDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(100%);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
    }
    to {
        transform: scale(1);
    }
}

@keyframes zoomOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0;
    }
    to {
        transform: scale(0.3);
    }
}

/* ===================================================
   BLUR ANIMATIONS
   =================================================== */

@keyframes blurIn {
    from {
        opacity: 0;
        filter: blur(10px);
    }
    to {
        opacity: 1;
        filter: blur(0);
    }
}

@keyframes blurOut {
    from {
        opacity: 1;
        filter: blur(0);
    }
    to {
        opacity: 0;
        filter: blur(10px);
    }
}

/* ===================================================
   SWIPE ANIMATIONS
   =================================================== */

@keyframes swipeInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes swipeInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===================================================
   APPEARANCE ANIMATIONS (for elements as they appear)
   =================================================== */

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

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

.fade-in-left {
    animation: fadeInLeft 0.8s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.slide-down {
    animation: slideDown 0.6s ease-out;
}

.slide-left {
    animation: slideLeft 0.6s ease-out;
}

.slide-right {
    animation: slideRight 0.6s ease-out;
}

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

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

.zoom-in {
    animation: zoomIn 0.6s ease-out;
}

/* ===================================================
   HOVER ANIMATIONS (applied to interactive elements)
   =================================================== */

.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.hover-scale {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.hover-glow {
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(23, 9, 110, 0.3);
}

.hover-spin {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-spin:hover {
    transform: rotate(10deg);
}

/* ===================================================
   STAGGER ANIMATIONS
   =================================================== */

.stagger-1 {
    animation-delay: 0.1s;
}

.stagger-2 {
    animation-delay: 0.2s;
}

.stagger-3 {
    animation-delay: 0.3s;
}

.stagger-4 {
    animation-delay: 0.4s;
}

.stagger-5 {
    animation-delay: 0.5s;
}

.stagger-6 {
    animation-delay: 0.6s;
}

/* ===================================================
   LOADING ANIMATION
   =================================================== */

@keyframes loading {
    0% {
        width: 0;
    }
    100% {
        width: 100%;
    }
}

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

/* ===================================================
   SMOOTH TRANSITIONS (Utility Classes)
   =================================================== */

.transition-all {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-fast {
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-slow {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-colors {
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-transform {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-opacity {
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-shadow {
    transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================================
   DISABLED & ACTIVE STATES
   =================================================== */

.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.active {
    opacity: 1;
    pointer-events: auto;
}

/* ===================================================
   REDUCED MOTION PREFERENCE
   =================================================== */

@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;
    }
}

/* ===================================================
   PERFORMANCE OPTIMIZATIONS
   =================================================== */

.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
}

.fast-animation {
    animation-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.smooth-animation {
    animation-timing-function: cubic-bezier(0.25, 0.1, 0.25, 1);
}