/* Keyframe Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -8px, 0);
    }
    70% {
        transform: translate3d(0, -4px, 0);
    }
    90% {
        transform: translate3d(0, -2px, 0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.animate-slide-up {
    animation: slideUp 0.3s ease-out;
}

.animate-slide-down {
    animation: slideDown 0.3s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.3s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.3s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.3s ease-out;
}

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

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

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* Staggered 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; }

/* Hover Animations */
.hover-lift {
    transition: transform 0.2s ease-in-out;
}

.hover-lift:hover {
    transform: translateY(-2px);
}

.hover-scale {
    transition: transform 0.2s ease-in-out;
}

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

.hover-glow {
    transition: box-shadow 0.2s ease-in-out;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

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

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text:last-child {
    margin-bottom: 0;
    width: 60%;
}

/* Transition Classes */
.transition-fast {
    transition: all 0.15s ease-in-out;
}

.transition-normal {
    transition: all 0.25s ease-in-out;
}

.transition-slow {
    transition: all 0.35s ease-in-out;
}

/* Page Transitions */
.page-enter {
    opacity: 0;
    transform: translateX(20px);
}

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

.page-exit {
    opacity: 1;
    transform: translateX(0);
}

.page-exit-active {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.3s, transform 0.3s;
}

/* Modal Animations */
.modal-enter {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
}

.modal-enter-active {
    opacity: 1;
    transform: scale(1) translateY(0);
    transition: opacity 0.2s, transform 0.2s;
}

.modal-exit {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.modal-exit-active {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
    transition: opacity 0.2s, transform 0.2s;
}

/* Button Animations */
.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, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn-ripple:active::after {
    width: 200px;
    height: 200px;
}

/* Card Animations */
.card-hover {
    transition: all 0.2s ease-in-out;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* List Item Animations */
.list-item {
    animation: slideInLeft 0.3s ease-out;
}

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

/* Notification Animations */
.notification-enter {
    opacity: 0;
    transform: translateX(100%);
}

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

.notification-exit {
    opacity: 1;
    transform: translateX(0);
}

.notification-exit-active {
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 0.3s, transform 0.3s;
}

/* Loading States */
.loading-dots {
    display: inline-block;
}

.loading-dots::after {
    content: '';
    animation: loadingDots 1.5s infinite;
}

@keyframes loadingDots {
    0%, 20% {
        content: '';
    }
    40% {
        content: '.';
    }
    60% {
        content: '..';
    }
    80%, 100% {
        content: '...';
    }
}

/* Success Animation */
.success-checkmark {
    animation: checkmark 0.5s ease-in-out;
}

@keyframes checkmark {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

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

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Focus Animations */
.focus-ring {
    transition: box-shadow 0.2s ease-in-out;
}

.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Responsive Animations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .skeleton {
        background: linear-gradient(90deg, #374151 25%, #4b5563 50%, #374151 75%);
    }
}