/**
 * Animation Library
 * Reusable animations for the entire application
 */

/* ========================================
   Animation Variables
   ======================================== */
:root {
    --animation-fast: 150ms;
    --animation-base: 300ms;
    --animation-slow: 500ms;
    --animation-slower: 800ms;
    
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    min-width: 300px;
    max-width: 500px;
    border-radius: 0.75rem;
    border-left: 4px solid;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    pointer-events: auto;
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.toast-icon {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
    color: white;
}

.toast-content {
    flex: 1;
    color: white;
    font-weight: 500;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.toast-close {
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    opacity: 0.7;
    transition: opacity var(--animation-fast) var(--ease-out);
}

.toast-close:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.1);
}

/* Toast entrance animation */
@keyframes toastEnter {
    from {
        opacity: 0;
        transform: translateX(100%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.toast-enter {
    animation: toastEnter var(--animation-base) var(--ease-out) forwards;
}

/* Toast exit animation */
@keyframes toastExit {
    from {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    to {
        opacity: 0;
        transform: translateX(100%) scale(0.95);
    }
}

.toast-exit {
    animation: toastExit var(--animation-base) var(--ease-in) forwards;
}

/* ========================================
   Skeleton Loaders
   ======================================== */
@keyframes skeletonPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #e0e0e0 20%,
        #f0f0f0 40%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 1.5s ease-in-out infinite;
    border-radius: 0.5rem;
}

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

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 0.75rem;
}

.skeleton-card {
    padding: 1.5rem;
    border-radius: 1rem;
}

.skeleton-avatar {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
}

/* ========================================
   Number Counter Animation
   ======================================== */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.count-up {
    animation: countUp var(--animation-slow) var(--ease-out);
}

/* ========================================
   Button Animations
   ======================================== */
.btn-hover-lift {
    transition: transform var(--animation-base) var(--ease-out),
                box-shadow var(--animation-base) var(--ease-out);
}

.btn-hover-lift:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.2);
}

.btn-hover-lift:active:not(:disabled) {
    transform: translateY(0);
}

/* 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 var(--animation-slow) var(--ease-out),
                height var(--animation-slow) var(--ease-out);
}

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

/* ========================================
   Card Animations
   ======================================== */
.card-hover-lift {
    transition: transform var(--animation-base) var(--ease-out),
                box-shadow var(--animation-base) var(--ease-out);
}

.card-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
}

/* Stagger animation for lists */
@keyframes staggerFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stagger-item {
    animation: staggerFadeIn var(--animation-slow) var(--ease-out) both;
}

.stagger-item:nth-child(1) { animation-delay: 0ms; }
.stagger-item:nth-child(2) { animation-delay: 50ms; }
.stagger-item:nth-child(3) { animation-delay: 100ms; }
.stagger-item:nth-child(4) { animation-delay: 150ms; }
.stagger-item:nth-child(5) { animation-delay: 200ms; }
.stagger-item:nth-child(6) { animation-delay: 250ms; }
.stagger-item:nth-child(7) { animation-delay: 300ms; }
.stagger-item:nth-child(8) { animation-delay: 350ms; }

/* ========================================
   Input Focus Animations
   ======================================== */
.input-focus-glow {
    transition: border-color var(--animation-fast) var(--ease-out),
                box-shadow var(--animation-fast) var(--ease-out);
}

.input-focus-glow:focus {
    animation: inputGlow var(--animation-slow) var(--ease-out);
}

@keyframes inputGlow {
    0%, 100% {
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
    }
}

/* ========================================
   Progress Bar Animation
   ======================================== */
@keyframes progressFill {
    from {
        transform: scaleX(0);
        transform-origin: left;
    }
    to {
        transform: scaleX(1);
        transform-origin: left;
    }
}

.progress-bar-animated {
    animation: progressFill var(--animation-slower) var(--ease-out) forwards;
}

/* ========================================
   Pulse Animations
   ======================================== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

@keyframes pulseShadow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
    }
}

.pulse-shadow {
    animation: pulseShadow 2s var(--ease-in-out) infinite;
}

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

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

/* ========================================
   Bounce Animation
   ======================================== */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.bounce {
    animation: bounce 1s var(--ease-bounce) infinite;
}

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

.fade-in {
    animation: fadeIn var(--animation-base) var(--ease-out);
}

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

.fade-out {
    animation: fadeOut var(--animation-base) var(--ease-in);
}

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

.slide-in-up {
    animation: slideInUp var(--animation-base) var(--ease-out);
}

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

.slide-in-down {
    animation: slideInDown var(--animation-base) var(--ease-out);
}

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

.slide-in-left {
    animation: slideInLeft var(--animation-base) var(--ease-out);
}

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

.slide-in-right {
    animation: slideInRight var(--animation-base) var(--ease-out);
}

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

.scale-in {
    animation: scaleIn var(--animation-base) var(--ease-out);
}

/* ========================================
   Mobile Responsiveness
   ======================================== */
@media (max-width: 640px) {
    .toast-container {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
    }
    
    .toast-item {
        min-width: auto;
        width: 100%;
    }
}