/* =====================================================
   MHCS Alumni System - Enhanced Animations & Effects
   ===================================================== */

/* Global Animation Classes */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-up {
    animation: fadeInUp 1s ease-out;
}

.fade-in-down {
    animation: fadeInDown 1s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 1s ease-out;
}

.fade-in-right {
    animation: fadeInRight 1s ease-out;
}

.slide-in-left {
    animation: slideInLeft 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right {
    animation: slideInRight 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in {
    animation: scaleIn 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.bounce-in {
    animation: bounceIn 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.rotate-in {
    animation: rotateIn 1s ease-out;
}

.flip-in {
    animation: flipIn 1s ease-out;
}

/* Scroll Animations - Visible by default, animate when JS works */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.animate {
    opacity: 0;
    transform: translateY(50px);
}

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

.scroll-reveal-left {
    opacity: 1;
    transform: translateX(0);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-left.animate {
    opacity: 0;
    transform: translateX(-80px);
}

.scroll-reveal-left.animate.active {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-right {
    opacity: 1;
    transform: translateX(0);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-right.animate {
    opacity: 0;
    transform: translateX(80px);
}

.scroll-reveal-right.animate.active {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-scale {
    opacity: 1;
    transform: scale(1);
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal-scale.animate {
    opacity: 0;
    transform: scale(0.8);
}

.scroll-reveal-scale.animate.active {
    opacity: 1;
    transform: scale(1);
}

/* Enhanced Hover Effects */
.hover-lift {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.3);
}

.hover-glow {
    transition: all 0.4s ease;
    position: relative;
}

.hover-glow::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #2563eb, #3b82f6, #1d4ed8, #2563eb);
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    animation: gradientShift 3s ease infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hover-glow:hover::before {
    opacity: 1;
}

.hover-glow:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
}

/* Modern Button Effects */
.btn-modern {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
}

.btn-modern:hover::before {
    width: 400%;
    height: 400%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%) scale(0);
}

.btn-modern:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
}

/* Card Animations */
.card-hover {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card-hover::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.card-hover:hover::before {
    left: 100%;
}

.card-hover:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.2);
}

/* Floating Elements */
.floating {
    animation: floating 4s ease-in-out infinite;
}

.floating-delayed {
    animation: floating 4s ease-in-out infinite;
    animation-delay: 2s;
}

.floating-slow {
    animation: floating 6s ease-in-out infinite;
}

/* Pulse Animation */
.pulse {
    animation: pulse 2.5s infinite;
}

.pulse-slow {
    animation: pulse 4s infinite;
}

/* Modern Loading Animation */
.loading-shimmer {
    background: linear-gradient(90deg, #f0f0f0 25%, #f8f8f8 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* Slide In Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-120px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(120px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale and Rotate Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.6);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.6);
    }
    to {
        opacity: 1;
        transform: rotate(0deg) scale(1);
    }
}

@keyframes flipIn {
    from {
        opacity: 0;
        transform: perspective(400px) rotateY(90deg);
    }
    to {
        opacity: 1;
        transform: perspective(400px) rotateY(0deg);
    }
}

/* Bounce Animation */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.08);
    }
    70% {
        transform: scale(0.95);
    }
    80% {
        transform: scale(1.02);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Floating Animation */
@keyframes floating {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-15px) rotate(2deg);
    }
    50% {
        transform: translateY(-25px) rotate(-2deg);
    }
    75% {
        transform: translateY(-15px) rotate(2deg);
    }
}

/* Pulse Animation */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.08);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Shimmer Animation */
@keyframes shimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

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

/* Stagger Animation Delays */
.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }
.stagger-item:nth-child(7) { animation-delay: 0.7s; }
.stagger-item:nth-child(8) { animation-delay: 0.8s; }

/* Page Entrance Animations */
.page-entrance {
    animation: pageEntrance 1s ease-out;
}

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

/* Modern Glass Effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Gradient Overlay */
.gradient-overlay {
    background: linear-gradient(135deg,
        rgba(37, 99, 235, 0.8) 0%,
        rgba(29, 78, 216, 0.6) 100%
    );
}

/* Particle Effect */
.particle-effect {
    position: relative;
    overflow: hidden;
}

.particle-effect::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 0%, rgba(255, 255, 255, 0.1) 100%);
    animation: particleFloat 3s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.1) rotate(180deg);
        opacity: 0.6;
    }
}

/* Magnetic Button Effect */
.magnetic-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.magnetic-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

/* Text Animation */
.text-gradient {
    background: linear-gradient(45deg, #2563eb, #3b82f6, #1d4ed8, #2563eb);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

/* Smooth Scroll */
.smooth-scroll {
    scroll-behavior: smooth;
}

/* Parallax Effect */
.parallax {
    transform: translateZ(0);
    will-change: transform;
}

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #f8f8f8 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    border-radius: 8px;
}

/* Success/Error Animations */
.success-animation {
    animation: successPulse 0.6s ease;
}

.error-animation {
    animation: errorShake 0.6s ease;
}

@keyframes successPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 rgba(16, 185, 129, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 20px rgba(16, 185, 129, 0.7);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 rgba(16, 185, 129, 0);
    }
}

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

/* Hover Animations */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
}

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

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

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

.hover-rotate:hover {
    transform: rotate(5deg) scale(1.05);
}

/* Loading Animations */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

.loading-dots {
    display: inline-flex;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: bounce 1.4s infinite ease-in-out both;
}

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

/* Pulse Animation */
.pulse {
    animation: pulse 2s infinite;
}

.pulse-slow {
    animation: pulse 3s infinite;
}

/* Glow Effects */
.glow {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.6);
    transition: box-shadow 0.3s ease;
}

.glow:hover {
    box-shadow: 0 0 30px rgba(37, 99, 235, 0.8);
}

.text-glow {
    text-shadow: 0 0 10px rgba(37, 99, 235, 0.6);
}

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

.floating-slow {
    animation: floating 4s ease-in-out infinite;
}

/* Shaking Animation */
.shake {
    animation: shake 0.5s ease-in-out;
}

/* Wobble Animation */
.wobble {
    animation: wobble 1s ease-in-out;
}

/* Heartbeat Animation */
.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

/* Progress Bar Animation */
.progress-fill {
    background: linear-gradient(90deg, #2563eb, #3b82f6, #2563eb);
    background-size: 200% 100%;
    animation: progressShine 2s linear infinite;
}

/* Typing Animation */
.typing {
    overflow: hidden;
    border-right: 3px solid #2563eb;
    white-space: nowrap;
    animation: typing 3s steps(30, end), blink 0.75s step-end infinite;
}

/* Particle Effects */
.particle {
    position: absolute;
    pointer-events: none;
    opacity: 0;
    animation: particle 1s ease-out forwards;
}

/* Keyframe Definitions */
@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 slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg);
    }
    to {
        opacity: 1;
        transform: rotate(0deg);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    80% {
        transform: scale(1);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Stagger Animation Delays */
.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }

/* Modern Glass Effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
}

/* Gradient Overlay */
.gradient-overlay {
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.8) 0%, 
        rgba(37, 99, 235, 0.6) 100%
    );
}

/* Hover Animations */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
}

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

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

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

.hover-rotate:hover {
    transform: rotate(5deg) scale(1.05);
}

/* Loading Animations */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

.loading-dots {
    display: inline-flex;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: bounce 1.4s infinite ease-in-out both;
}

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

/* Pulse Animation */
.pulse {
    animation: pulse 2s infinite;
}

.pulse-slow {
    animation: pulse 3s infinite;
}

/* Glow Effects */
.glow {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.6);
    transition: box-shadow 0.3s ease;
}

.glow:hover {
    box-shadow: 0 0 30px rgba(37, 99, 235, 0.8);
}

.text-glow {
    text-shadow: 0 0 10px rgba(37, 99, 235, 0.6);
}

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

.floating-slow {
    animation: floating 4s ease-in-out infinite;
}

/* Shaking Animation */
.shake {
    animation: shake 0.5s ease-in-out;
}

/* Wobble Animation */
.wobble {
    animation: wobble 1s ease-in-out;
}

/* Heartbeat Animation */
.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

/* Progress Bar Animation */
.progress-fill {
    background: linear-gradient(90deg, #2563eb, #3b82f6, #2563eb);
    background-size: 200% 100%;
    animation: progressShine 2s linear infinite;
}

/* Typing Animation */
.typing {
    overflow: hidden;
    border-right: 3px solid #2563eb;
    white-space: nowrap;
    animation: typing 3s steps(30, end), blink 0.75s step-end infinite;
}

/* Particle Effects */
.particle {
    position: absolute;
    pointer-events: none;
    opacity: 0;
    animation: particle 1s ease-out forwards;
}

/* Keyframe Definitions */
@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 slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.8);
    }
    to {
        opacity: 1;
        transform: rotate(0) scale(1);
    }
}

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

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translateY(0);
    }
    40%, 43% {
        transform: translateY(-10px);
    }
    70% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

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

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

@keyframes wobble {
    0%, 100% {
        transform: translateX(0);
    }
    15% {
        transform: translateX(-25px) rotate(-5deg);
    }
    30% {
        transform: translateX(20px) rotate(3deg);
    }
    45% {
        transform: translateX(-15px) rotate(-3deg);
    }
    60% {
        transform: translateX(10px) rotate(2deg);
    }
    75% {
        transform: translateX(-5px) rotate(-1deg);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    14% {
        transform: scale(1.3);
    }
    28% {
        transform: scale(1);
    }
    42% {
        transform: scale(1.3);
    }
    70% {
        transform: scale(1);
    }
}

@keyframes progressShine {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

@keyframes particle {
    0% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) scale(0);
    }
}

/* Staggered Animations - Visible by default */
.stagger-item {
    opacity: 1;
    animation: fadeInUp 0.6s ease-out forwards;
}

.stagger-item.animate {
    opacity: 0;
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }

/* Parallax Effects */
.parallax-slow {
    will-change: transform;
}

.parallax-medium {
    will-change: transform;
}

.parallax-fast {
    will-change: transform;
}

/* Intersection Observer Classes */
.observe-once {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.observe-once.observed {
    opacity: 1;
    transform: translateY(0);
}

.observe-repeat {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.observe-repeat.observed {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.transition-all {
    transition: all 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 ease;
}

.transition-colors {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Dark Mode Animations */
@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);
    backface-visibility: hidden;
    perspective: 1000px;
}

.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}