/* ============================================
   ELITECH HUB - SMOOTH ANIMATIONS
   Modern, Performant Motion Design
   ============================================ */

/* ============================================
   1. KEYFRAME ANIMATIONS - Essential Library
   ============================================ */

/* Fade 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 scaleInBounce {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        transform: scale(1.03);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Slide Animations */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

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

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Bounce & Spring */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

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

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

/* Rotate */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Spin (for loaders) */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Blink (for cursor) */
@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

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

/* Grid Move (for animated backgrounds) */
@keyframes gridMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 50px 50px;
    }
}

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

/* Glow Pulse */
@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 5px rgba(220, 38, 38, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(220, 38, 38, 0.6), 0 0 30px rgba(220, 38, 38, 0.4);
    }
}

/* ============================================
   2. ANIMATION UTILITY CLASSES
   ============================================ */

/* Fade Utilities */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.6s ease-out forwards;
}

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in-down {
    opacity: 0;
    animation: fadeInDown 0.6s ease-out forwards;
}

.fade-in-left {
    opacity: 0;
    animation: fadeInLeft 0.6s ease-out forwards;
}

.fade-in-right {
    opacity: 0;
    animation: fadeInRight 0.6s ease-out forwards;
}

/* Scale Utilities */
.scale-in {
    opacity: 0;
    animation: scaleIn 0.4s ease-out forwards;
}

.scale-in-bounce {
    opacity: 0;
    animation: scaleInBounce 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

/* Continuous Animations */
.bounce {
    animation: bounce 2s ease-in-out infinite;
}

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

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

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

/* Animation Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }

/* Animation Durations */
.duration-fast { animation-duration: 0.3s; }
.duration-normal { animation-duration: 0.6s; }
.duration-slow { animation-duration: 1s; }

/* ============================================
   3. TRANSITION UTILITIES
   ============================================ */

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

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

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

.transition-opacity {
    transition: opacity 0.3s;
}

/* ============================================
   4. HOVER EFFECTS
   ============================================ */

.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.hover-grow {
    transition: transform 0.3s ease;
}

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

.hover-shrink {
    transition: transform 0.3s ease;
}

.hover-shrink:hover {
    transform: scale(0.95);
}

.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.4);
}

.hover-brighten {
    transition: filter 0.3s ease;
}

.hover-brighten:hover {
    filter: brightness(1.1);
}

/* ============================================
   5. SCROLL ANIMATIONS (via Intersection Observer)
   ============================================ */

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.scroll-fade {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.scroll-fade.animate-in {
    opacity: 1;
}

.scroll-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   6. LOADING ANIMATIONS
   ============================================ */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--gray-200) 0%,
        var(--gray-300) 50%,
        var(--gray-200) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

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

.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: shimmer 2s infinite;
}

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

/* ============================================
   7. PAGE TRANSITIONS
   ============================================ */

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

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.3s, transform 0.3s;
}

.page-exit {
    opacity: 1;
}

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

/* ============================================
   8. 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;
        scroll-behavior: auto !important;
    }

    .fade-in,
    .fade-in-up,
    .fade-in-down,
    .fade-in-left,
    .fade-in-right,
    .scale-in,
    .scale-in-bounce,
    .scroll-reveal,
    .scroll-fade,
    .scroll-scale {
        opacity: 1;
        transform: none;
        animation: none;
    }
}

/* ============================================
   9. PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* Use GPU acceleration for transforms */
.gpu-accelerated {
    will-change: transform;
    transform: translateZ(0);
}

/* Optimize animations */
.optimized-animation {
    backface-visibility: hidden;
    perspective: 1000px;
}