/**
 * KeepBoard - Animations
 * Keyframes and micro-interactions
 */

/* ========== Keyframe Animations ========== */

/* Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Fade Out */
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* Slide In from Right */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Slide In from Left */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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

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

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

/* Scale Out */
@keyframes scaleOut {
    from {
        transform: scale(1);
        opacity: 1;
    }
    to {
        transform: scale(0.9);
        opacity: 0;
    }
}

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

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

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

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

/* Ping */
@keyframes ping {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* Wiggle */
@keyframes wiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-5deg);
    }
    75% {
        transform: rotate(5deg);
    }
}

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

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

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

/* ========== Utility Classes ========== */

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

.animate-fade-out {
    animation: fadeOut 0.3s ease-in-out;
}

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

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

.animate-slide-in-top {
    animation: slideInTop 0.3s ease-out;
}

.animate-slide-in-bottom {
    animation: slideInBottom 0.3s ease-out;
}

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

/* Scale Animations */
.animate-scale-in {
    animation: scaleIn 0.3s ease-out;
}

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

/* Bounce */
.animate-bounce {
    animation: bounce 1s ease-in-out;
}

/* Shake */
.animate-shake {
    animation: shake 0.5s ease-in-out;
}

/* Pulse */
.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

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

/* Ping */
.animate-ping {
    animation: ping 1s cubic-bezier(0, 0, 0.2, 1) infinite;
}

/* Wiggle */
.animate-wiggle {
    animation: wiggle 0.5s ease-in-out;
}

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

/* ========== Hover Effects ========== */

/* Lift on Hover */
.hover-lift {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

/* Scale on Hover */
.hover-scale {
    transition: transform var(--transition-fast);
}

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

/* Rotate on Hover */
.hover-rotate {
    transition: transform var(--transition-fast);
}

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

/* Glow on Hover */
.hover-glow {
    transition: box-shadow var(--transition-fast);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

/* Brighten on Hover */
.hover-brighten {
    transition: filter var(--transition-fast);
}

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

/* ========== Loading States ========== */

/* Skeleton Loader */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-bg-tertiary) 25%,
        var(--color-border) 50%,
        var(--color-bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

.skeleton-title {
    height: 1.5em;
    margin-bottom: 1em;
}

.skeleton-circle {
    border-radius: 50%;
    aspect-ratio: 1;
}

/* Progress Bar */
.progress-bar {
    height: 4px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.progress-bar-indeterminate .progress-bar-fill {
    width: 30%;
    animation: progressIndeterminate 1.5s ease-in-out infinite;
}

@keyframes progressIndeterminate {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(400%);
    }
}

/* Dots Loading */
.loading-dots {
    display: flex;
    gap: 0.5em;
    align-items: center;
    justify-content: center;
}

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

.loading-dots span:nth-child(1) {
    animation-delay: 0s;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dotBounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========== Page Transitions ========== */
.page-enter {
    animation: fadeIn 0.3s ease-out;
}

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

/* ========== Scroll Animations ========== */
.scroll-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-fade-in.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Stagger Animation ========== */
.stagger-children > * {
    animation: slideUp 0.4s ease-out;
}

.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }

/* ========== Interactive Feedback ========== */

/* 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;
}

/* Press Effect */
.press-effect {
    transition: transform var(--transition-fast);
}

.press-effect:active {
    transform: scale(0.95);
}

/* ========== Attention Seekers ========== */

/* Heartbeat */
@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.1);
    }
    20% {
        transform: scale(0.95);
    }
}

.animate-heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

/* Flash */
@keyframes flash {
    0%, 50%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0;
    }
}

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

/* ========== Performance Optimizations ========== */

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .animate-pulse,
    .animate-spin,
    .animate-bounce,
    .animate-float {
        animation: none !important;
    }
}

/* GPU Acceleration */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}