/**
 * Acutus Motion System
 * Professional animations and micro-interactions
 * Version: 1.0
 * 
 * Usage:
 * - Add .animate-fade-in, .animate-slide-up etc to elements
 * - Use [data-animate] for scroll-triggered animations
 * - Apply .hover-lift, .hover-glow for interactive states
 * - All animations respect prefers-reduced-motion
 */

:root {
    /* Motion Timing */
    --motion-instant: 50ms;
    --motion-fast: 150ms;
    --motion-normal: 200ms;
    --motion-slow: 300ms;
    --motion-slower: 400ms;
    --motion-slowest: 500ms;
    
    /* Easing Functions */
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --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-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Animation Distances */
    --slide-distance-sm: 8px;
    --slide-distance-md: 16px;
    --slide-distance-lg: 24px;
    --scale-hover: 1.02;
    --scale-press: 0.98;
}

/* ===========================
   Base Animation Classes
   =========================== */

/* Fade Animations */
.animate-fade-in {
    animation: fadeIn var(--motion-normal) var(--ease-out) forwards;
}

.animate-fade-out {
    animation: fadeOut var(--motion-normal) var(--ease-in) forwards;
}

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

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

/* Slide Animations */
.animate-slide-up {
    animation: slideUp var(--motion-normal) var(--ease-out) forwards;
}

.animate-slide-down {
    animation: slideDown var(--motion-normal) var(--ease-out) forwards;
}

.animate-slide-left {
    animation: slideLeft var(--motion-normal) var(--ease-out) forwards;
}

.animate-slide-right {
    animation: slideRight var(--motion-normal) var(--ease-out) forwards;
}

@keyframes slideUp {
    from { 
        opacity: 0; 
        transform: translateY(var(--slide-distance-md)); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideDown {
    from { 
        opacity: 0; 
        transform: translateY(calc(-1 * var(--slide-distance-md))); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideLeft {
    from { 
        opacity: 0; 
        transform: translateX(var(--slide-distance-md)); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0); 
    }
}

@keyframes slideRight {
    from { 
        opacity: 0; 
        transform: translateX(calc(-1 * var(--slide-distance-md))); 
    }
    to { 
        opacity: 1; 
        transform: translateX(0); 
    }
}

/* Scale Animations */
.animate-scale-in {
    animation: scaleIn var(--motion-normal) var(--ease-spring) forwards;
}

.animate-scale-out {
    animation: scaleOut var(--motion-fast) var(--ease-in) forwards;
}

@keyframes scaleIn {
    from { 
        opacity: 0; 
        transform: scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: scale(1); 
    }
}

@keyframes scaleOut {
    from { 
        opacity: 1; 
        transform: scale(1); 
    }
    to { 
        opacity: 0; 
        transform: scale(0.95); 
    }
}

/* Pop Animation (for toasts, modals) */
.animate-pop {
    animation: pop var(--motion-slow) var(--ease-spring) forwards;
}

@keyframes pop {
    0% { 
        opacity: 0; 
        transform: scale(0.9) translateY(10px); 
    }
    70% { 
        transform: scale(1.02) translateY(-2px); 
    }
    100% { 
        opacity: 1; 
        transform: scale(1) translateY(0); 
    }
}

/* ===========================
   Scroll-Triggered Animations
   =========================== */

[data-animate] {
    opacity: 0;
    transition: opacity var(--motion-slow) var(--ease-out),
                transform var(--motion-slow) var(--ease-out);
}

[data-animate="fade"] {
    opacity: 0;
}

[data-animate="slide-up"] {
    transform: translateY(var(--slide-distance-lg));
}

[data-animate="slide-left"] {
    transform: translateX(var(--slide-distance-lg));
}

[data-animate="slide-right"] {
    transform: translateX(calc(-1 * var(--slide-distance-lg)));
}

[data-animate="scale"] {
    transform: scale(0.95);
}

[data-animate].animated {
    opacity: 1;
    transform: none;
}

/* Stagger children animations */
[data-animate-stagger] > * {
    opacity: 0;
    transform: translateY(var(--slide-distance-sm));
    transition: opacity var(--motion-normal) var(--ease-out),
                transform var(--motion-normal) var(--ease-out);
}

[data-animate-stagger].animated > *:nth-child(1) { transition-delay: 0ms; }
[data-animate-stagger].animated > *:nth-child(2) { transition-delay: 50ms; }
[data-animate-stagger].animated > *:nth-child(3) { transition-delay: 100ms; }
[data-animate-stagger].animated > *:nth-child(4) { transition-delay: 150ms; }
[data-animate-stagger].animated > *:nth-child(5) { transition-delay: 200ms; }
[data-animate-stagger].animated > *:nth-child(6) { transition-delay: 250ms; }
[data-animate-stagger].animated > *:nth-child(n+7) { transition-delay: 300ms; }

[data-animate-stagger].animated > * {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Interactive States
   =========================== */

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

.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: var(--acutus-shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.1));
}

.hover-lift:active {
    transform: translateY(0);
}

/* Hover Scale Effect */
.hover-scale {
    transition: transform var(--motion-fast) var(--ease-spring);
}

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

.hover-scale:active {
    transform: scale(var(--scale-press));
}

/* Hover Glow Effect */
.hover-glow {
    transition: box-shadow var(--motion-normal) var(--ease-out);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* ===========================
   Focus States
   =========================== */

.focus-ring {
    transition: box-shadow var(--motion-fast) var(--ease-out),
                outline var(--motion-fast) var(--ease-out);
}

.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.4);
}

.focus-ring:focus:not(:focus-visible) {
    box-shadow: none;
}

.focus-ring:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.4);
}

/* ===========================
   Button Interactions
   =========================== */

.btn-animated {
    position: relative;
    overflow: hidden;
    transition: transform var(--motion-fast) var(--ease-out),
                box-shadow var(--motion-fast) var(--ease-out),
                background-color var(--motion-fast) var(--ease-out);
}

.btn-animated:hover {
    transform: translateY(-1px);
}

.btn-animated:active {
    transform: translateY(0) scale(var(--scale-press));
}

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

.btn-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
    opacity: 0;
}

.btn-ripple:active::after {
    width: 200%;
    height: 200%;
    opacity: 1;
    transition: 0s;
}

/* ===========================
   Card Interactions
   =========================== */

.card-interactive {
    transition: transform var(--motion-normal) var(--ease-out),
                box-shadow var(--motion-normal) var(--ease-out),
                border-color var(--motion-normal) var(--ease-out);
}

.card-interactive:hover {
    transform: translateY(-4px);
    box-shadow: var(--acutus-shadow-xl, 0 20px 25px rgba(0, 0, 0, 0.1));
}

.card-interactive:focus-within {
    border-color: var(--acutus-primary, #00d4ff);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

/* ===========================
   Table Row Interactions
   =========================== */

.table-interactive tbody tr {
    transition: background-color var(--motion-fast) var(--ease-out);
}

.table-interactive tbody tr:hover {
    background-color: var(--acutus-gray-50, #f9fafb);
}

.table-interactive tbody tr:focus-within {
    background-color: rgba(0, 212, 255, 0.05);
    outline: 2px solid rgba(0, 212, 255, 0.3);
    outline-offset: -2px;
}

/* ===========================
   Navigation Animations
   =========================== */

.nav-animated .nav-link {
    position: relative;
    transition: color var(--motion-fast) var(--ease-out);
}

.nav-animated .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--acutus-primary, #00d4ff);
    transition: width var(--motion-normal) var(--ease-out),
                left var(--motion-normal) var(--ease-out);
}

.nav-animated .nav-link:hover::after,
.nav-animated .nav-link.active::after {
    width: 100%;
    left: 0;
}

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

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

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

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

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

.shimmer {
    background: linear-gradient(
        90deg,
        var(--acutus-gray-200, #e5e7eb) 0%,
        var(--acutus-gray-100, #f3f4f6) 50%,
        var(--acutus-gray-200, #e5e7eb) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--acutus-gray-200, #e5e7eb) 25%,
        var(--acutus-gray-100, #f3f4f6) 50%,
        var(--acutus-gray-200, #e5e7eb) 75%
    );
    background-size: 400% 100%;
    animation: skeleton 1.5s ease infinite;
    border-radius: var(--acutus-radius-sm, 6px);
}

@keyframes skeleton {
    0% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ===========================
   Toast Animations
   =========================== */

.toast-enter {
    animation: toastEnter var(--motion-slow) var(--ease-spring) forwards;
}

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

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

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

/* ===========================
   Modal Animations
   =========================== */

.modal-animated .modal-dialog {
    animation: modalEnter var(--motion-slow) var(--ease-spring) forwards;
}

@keyframes modalEnter {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-backdrop.fade {
    transition: opacity var(--motion-normal) var(--ease-out);
}

/* ===========================
   Dropdown Animations
   =========================== */

.dropdown-animated .dropdown-menu {
    display: block;
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    transition: opacity var(--motion-fast) var(--ease-out),
                transform var(--motion-fast) var(--ease-out);
    pointer-events: none;
}

.dropdown-animated .dropdown-menu.show {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* ===========================
   Accordion Animations
   =========================== */

.accordion-animated .accordion-collapse {
    transition: height var(--motion-slow) var(--ease-out);
}

.accordion-animated .accordion-button::after {
    transition: transform var(--motion-normal) var(--ease-out);
}

/* ===========================
   Form Validation Animations
   =========================== */

.form-control.is-invalid {
    animation: shake var(--motion-slow) var(--ease-out);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.invalid-feedback {
    animation: slideUp var(--motion-fast) var(--ease-out) forwards;
}

/* ===========================
   Empty State
   =========================== */

.empty-state-icon {
    animation: float 3s ease-in-out infinite;
}

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

/* ===========================
   Progress Animations
   =========================== */

.progress-animated .progress-bar {
    transition: width var(--motion-slower) var(--ease-out);
}

/* ===========================
   Reduced Motion Support
   =========================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
    
    /* Ensure animated elements show final state immediately */
    [data-animate],
    [data-animate-stagger] > *,
    .animate-fade-in,
    .animate-fade-out,
    .animate-slide-up,
    .animate-slide-down,
    .animate-slide-left,
    .animate-slide-right,
    .animate-scale-in,
    .animate-scale-out {
        opacity: 1 !important;
        transform: none !important;
        animation: none !important;
    }
    
    /* Disable hover transforms */
    .hover-lift:hover,
    .hover-scale:hover,
    .hover-glow:hover,
    .card-interactive:hover,
    .btn-animated:hover {
        transform: none !important;
        box-shadow: none !important;
    }
    
    /* Disable loading animations */
    .spin,
    .pulse,
    .shimmer,
    .skeleton {
        animation: none !important;
    }
    
    /* Disable floating/shake animations */
    .empty-state-icon,
    .invalid-feedback {
        animation: none !important;
    }
}

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

/* Animation Delays */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Animation Durations */
.duration-fast { animation-duration: var(--motion-fast) !important; }
.duration-normal { animation-duration: var(--motion-normal) !important; }
.duration-slow { animation-duration: var(--motion-slow) !important; }

/* Fill Modes */
.fill-forwards { animation-fill-mode: forwards !important; }
.fill-both { animation-fill-mode: both !important; }