/* ==========================================================================
   ANIMATIONS - Keyframes, Transitions, Scroll Effects
   ========================================================================== */

/* Keyframe Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(30px, -30px);
    }
    50% {
        transform: translate(-20px, 20px);
    }
    75% {
        transform: translate(20px, 30px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

@keyframes scrollDown {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(20px);
        opacity: 0;
    }
}

@keyframes spin {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.5);
    }
}

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

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger Delay Classes */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.hover-glow {
    transition: var(--transition-base);
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.4);
}

/* Loading States */
.loading-shimmer {
    background: linear-gradient(
        90deg,
        var(--color-bg-secondary) 0%,
        var(--color-bg-tertiary) 50%,
        var(--color-bg-secondary) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

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

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

/* Page Transitions */
.page-transition {
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

/* Text Animations */
.text-gradient-animate {
    background: linear-gradient(
        90deg,
        var(--color-accent-blue) 0%,
        var(--color-accent-green) 25%,
        var(--color-accent-amber) 50%,
        var(--color-accent-green) 75%,
        var(--color-accent-blue) 100%
    );
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

/* Interactive Hover States */
.interactive-card {
    position: relative;
    transition: var(--transition-smooth);
}

.interactive-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    background: radial-gradient(
        800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(59, 130, 246, 0.1),
        transparent 40%
    );
    transition: opacity 0.5s;
    pointer-events: none;
}

.interactive-card:hover::after {
    opacity: 1;
}

/* Progress Indicators */
@keyframes progress {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.progress-bar {
    height: 4px;
    background: var(--gradient-primary);
    animation: progress 2s ease-out;
}

/* Entrance Animations for Different Elements */
.animate-on-scroll {
    opacity: 0;
}

.animate-on-scroll.animated {
    animation: fadeInUp 0.8s ease forwards;
}

/* Counter Animation */
.counter {
    transition: transform 0.3s ease;
}

.counter.counting {
    animation: bounce 0.5s ease;
}

/* Form Validation Animations */
.form-shake {
    animation: shake 0.5s;
}

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

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

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

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 25%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0.05) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Notification Slide In */
@keyframes slideInFromTop {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.notification-enter {
    animation: slideInFromTop 0.4s ease forwards;
}

/* Magnetic Effect Preparation */
.magnetic {
    transition: transform 0.2s ease;
}

/* Parallax Layers */
.parallax-layer {
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* Fade Transitions */
.fade-enter {
    opacity: 0;
}

.fade-enter-active {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.fade-exit {
    opacity: 1;
}

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

/* Scale Transitions */
.scale-enter {
    opacity: 0;
    transform: scale(0.9);
}

.scale-enter-active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Slide Transitions */
.slide-up-enter {
    opacity: 0;
    transform: translateY(20px);
}

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

/* Rotate In Animation */
@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-180deg) scale(0.5);
    }
    to {
        opacity: 1;
        transform: rotate(0) scale(1);
    }
}

.rotate-in {
    animation: rotateIn 0.6s ease forwards;
}

/* Typewriter Effect */
@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.typewriter {
    overflow: hidden;
    white-space: nowrap;
    animation: typewriter 3s steps(40) forwards;
}

/* Performance Optimizations */
.will-animate {
    will-change: transform, opacity;
}

.no-will-animate {
    will-change: auto;
}

/* Disable animations for 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;
    }
}

/* Mobile Specific Animations */
@media (max-width: 768px) {
    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        transform: none;
        opacity: 1;
    }
    
    @keyframes float {
        0%, 100% {
            transform: translate(0, 0);
        }
        50% {
            transform: translate(0, 10px);
        }
    }
}