/* ==========================================
   ANIMATIONS.CSS - Smooth Transitions & Effects
   ========================================== */

/* === KEYFRAME ANIMATIONS === */

/* 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 slideInUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

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

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

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

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

/* Bounce Animations */
@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 bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* Pulse Animations */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(0.9);
    }
    20%, 40%, 60%, 80% {
        transform: scale(1.1);
    }
    50%, 70% {
        transform: scale(1.05);
    }
}

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

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

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

/* Scale Animations */
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.3);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

/* Flip Animations */
@keyframes flipInX {
    from {
        transform: perspective(400px) rotateX(90deg);
        opacity: 0;
    }
    to {
        transform: perspective(400px) rotateX(0deg);
        opacity: 1;
    }
}

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

/* Shimmer Effect */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

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

/* Glow Effect */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(64, 81, 137, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(64, 81, 137, 0.8);
    }
}

/* Float Effect */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Confetti Effect */
@keyframes confetti-fall {
    to {
        transform: translateY(100vh) rotate(360deg);
    }
}

/* === UTILITY ANIMATION CLASSES === */

.animate-fade-in {
    animation: fadeIn 0.5s ease;
}

.animate-fade-out {
    animation: fadeOut 0.5s ease;
}

.animate-slide-in-up {
    animation: slideInUp 0.3s ease;
}

.animate-slide-in-down {
    animation: slideInDown 0.3s ease;
}

.animate-bounce {
    animation: bounce 1s infinite;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

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

.animate-shake {
    animation: shake 0.5s ease;
}

.animate-glow {
    animation: glow 2s infinite;
}

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

/* === LOADING ANIMATIONS === */

.loader-dots {
    display: inline-flex;
    gap: 8px;
}

.loader-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-color);
    animation: bounce 1.4s infinite ease-in-out both;
}

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

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

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-small {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

/* === SKELETON LOADING === */

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 12px;
}

.skeleton-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

.skeleton-card {
    height: 120px;
    border-radius: var(--border-radius);
}

/* === TRANSITION UTILITIES === */

.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);
}

/* === 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-scale {
    transition: transform 0.3s ease;
}

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

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(64, 81, 137, 0.4);
}

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

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

.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;
}

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

/* === SUCCESS ANIMATIONS === */

.success-checkmark {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--success-color);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: bounceIn 0.6s ease;
}

.success-checkmark::after {
    content: '✓';
    color: white;
    font-size: 32px;
    font-weight: bold;
    animation: fadeIn 0.3s ease 0.3s both;
}

/* === PROGRESS INDICATORS === */

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-circle {
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    animation: progress-ring 2s ease-out forwards;
}

@keyframes progress-ring {
    to {
        stroke-dashoffset: 0;
    }
}

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

.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s ease forwards;
}

.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; }

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

.card-enter {
    animation: fadeInUp 0.5s ease;
}

.card-exit {
    animation: fadeOut 0.3s ease;
}

.card-flip {
    perspective: 1000px;
}

.card-flip-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card-flip.flipped .card-flip-inner {
    transform: rotateY(180deg);
}

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

.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* === NOTIFICATION ANIMATIONS === */

.notification-enter {
    animation: slideInRight 0.3s ease;
}

.notification-exit {
    animation: slideOutRight 0.3s ease;
}

/* === BADGE ANIMATIONS === */

.badge-bounce {
    animation: bounce 0.5s ease;
}

.badge-pulse {
    animation: pulse 2s infinite;
}

/* === CONFETTI ANIMATION === */

.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    position: absolute;
    animation: confetti-fall 3s linear forwards;
}

.confetti:nth-child(2n) {
    background: var(--accent-color);
}

.confetti:nth-child(3n) {
    background: var(--success-color);
}

.confetti:nth-child(4n) {
    background: var(--info-color);
}

/* === SMOOTH SCROLLING === */

html {
    scroll-behavior: smooth;
}

/* === REDUCE 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;
    }
}

/* === PERFORMANCE OPTIMIZATION === */

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

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

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
}