/* ============================================
   NEURAL TRANSIT - Animations & Effects
   Premium animations for professional feel
   ============================================ */

/* ============================================
   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);
    }
}

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

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

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    70% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* 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);
    }
}

/* Float Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes floatSlow {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(2deg);
    }
}

/* Pulse Animations */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 20px var(--accent-cyan-glow);
    }
    50% {
        box-shadow: 0 0 40px var(--accent-cyan-glow), 0 0 60px var(--accent-cyan-glow);
    }
}

@keyframes pulseDot {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }
}

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

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

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

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

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

/* Text Gradient Animation */
@keyframes textGradient {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        filter: drop-shadow(0 0 5px var(--accent-cyan-500));
    }
    50% {
        filter: drop-shadow(0 0 20px var(--accent-cyan-500));
    }
}

/* Typing Cursor */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Wave Animation */
@keyframes wave {
    0%, 100% {
        transform: translateY(0) rotate(0);
    }
    25% {
        transform: translateY(-5px) rotate(-5deg);
    }
    75% {
        transform: translateY(5px) rotate(5deg);
    }
}

/* ============================================
   NEURAL NETWORK BACKGROUND
   ============================================ */

.neural-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-below);
    overflow: hidden;
}

/* Gradient Orbs */
.neural-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 20% 80%, var(--accent-cyan-glow) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 20%, var(--accent-green-glow) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 50% 50%, rgba(30, 58, 95, 0.2) 0%, transparent 60%),
        radial-gradient(ellipse 40% 60% at 90% 90%, var(--accent-purple-glow) 0%, transparent 50%);
    animation: bgPulse 10s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { 
        opacity: 0.4;
        transform: scale(1);
    }
    50% { 
        opacity: 0.7;
        transform: scale(1.05);
    }
}

/* Floating Nodes */
.neural-node {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-cyan-500);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan-500), 0 0 20px var(--accent-cyan-glow);
    animation: floatNode 8s ease-in-out infinite;
}

.neural-node:nth-child(1) { left: 5%; top: 15%; animation-delay: 0s; }
.neural-node:nth-child(2) { left: 15%; top: 60%; animation-delay: -1s; animation-duration: 7s; }
.neural-node:nth-child(3) { left: 25%; top: 30%; animation-delay: -2s; animation-duration: 9s; }
.neural-node:nth-child(4) { left: 40%; top: 70%; animation-delay: -3s; animation-duration: 6s; }
.neural-node:nth-child(5) { left: 55%; top: 20%; animation-delay: -4s; animation-duration: 8s; }
.neural-node:nth-child(6) { left: 65%; top: 55%; animation-delay: -5s; animation-duration: 10s; }
.neural-node:nth-child(7) { left: 75%; top: 35%; animation-delay: -1.5s; animation-duration: 7s; }
.neural-node:nth-child(8) { left: 85%; top: 75%; animation-delay: -2.5s; animation-duration: 9s; }
.neural-node:nth-child(9) { left: 92%; top: 25%; animation-delay: -3.5s; animation-duration: 8s; }
.neural-node:nth-child(10) { left: 10%; top: 85%; animation-delay: -4.5s; animation-duration: 6s; }

/* Green Nodes */
.neural-node:nth-child(even) {
    background: var(--accent-green-500);
    box-shadow: 0 0 10px var(--accent-green-500), 0 0 20px var(--accent-green-glow);
}

@keyframes floatNode {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
        opacity: 0.6;
    }
    25% {
        transform: translateY(-30px) translateX(10px) scale(1.2);
        opacity: 1;
    }
    50% {
        transform: translateY(-15px) translateX(-10px) scale(0.8);
        opacity: 0.8;
    }
    75% {
        transform: translateY(-25px) translateX(5px) scale(1.1);
        opacity: 0.9;
    }
}

/* Grid Pattern Overlay */
.neural-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }
    100% {
        transform: perspective(500px) rotateX(60deg) translateY(50px);
    }
}

/* ============================================
   SCROLL ANIMATIONS (Intersection Observer)
   ============================================ */

/* Base state for animated elements */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Different animation variants */
.animate-fade-up {
    opacity: 0;
    transform: translateY(40px);
}

.animate-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-down {
    opacity: 0;
    transform: translateY(-40px);
}

.animate-fade-down.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-left {
    opacity: 0;
    transform: translateX(-40px);
}

.animate-fade-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.animate-fade-right {
    opacity: 0;
    transform: translateX(40px);
}

.animate-fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.animate-scale {
    opacity: 0;
    transform: scale(0.9);
}

.animate-scale.visible {
    opacity: 1;
    transform: scale(1);
}

.animate-rotate {
    opacity: 0;
    transform: rotate(-10deg) scale(0.9);
}

.animate-rotate.visible {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* Staggered animations for grid items */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }
.stagger-7 { transition-delay: 0.7s; }
.stagger-8 { transition-delay: 0.8s; }

/* ============================================
   HOVER EFFECTS
   ============================================ */

/* Lift Effect */
.hover-lift {
    transition: transform var(--duration-300) var(--ease-out), 
                box-shadow var(--duration-300) var(--ease-out);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Glow Effect */
.hover-glow {
    transition: box-shadow var(--duration-300) var(--ease-out);
}

.hover-glow:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow-cyan);
}

.hover-glow-green:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow-green);
}

.hover-glow-purple:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow-purple);
}

/* Scale Effect */
.hover-scale {
    transition: transform var(--duration-300) var(--ease-out);
}

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

.hover-scale-sm:hover {
    transform: scale(1.02);
}

/* Rotate Effect */
.hover-rotate {
    transition: transform var(--duration-300) var(--ease-out);
}

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

/* Shine Effect */
.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left var(--duration-500) var(--ease-out);
}

.hover-shine:hover::before {
    left: 100%;
}

/* Border Glow Effect */
.hover-border-glow {
    position: relative;
    transition: all var(--duration-300) var(--ease-out);
}

.hover-border-glow::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-accent);
    border-radius: inherit;
    opacity: 0;
    z-index: -1;
    transition: opacity var(--duration-300) var(--ease-out);
    filter: blur(8px);
}

.hover-border-glow:hover::before {
    opacity: 1;
}

/* Text Underline Animation */
.hover-underline {
    position: relative;
}

.hover-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width var(--duration-300) var(--ease-out);
}

.hover-underline:hover::after {
    width: 100%;
}

/* Icon Bounce */
.hover-icon-bounce:hover svg,
.hover-icon-bounce:hover i {
    animation: bounce 0.5s ease;
}

/* ============================================
   PAGE TRANSITIONS
   ============================================ */

/* Page Enter */
.page-enter {
    animation: fadeInUp 0.5s var(--ease-out) forwards;
}

/* Page Exit */
.page-exit {
    animation: fadeOut 0.3s var(--ease-in) forwards;
}

/* Overlay Transition */
.page-overlay {
    position: fixed;
    inset: 0;
    background: var(--primary-900);
    z-index: var(--z-max);
    transform: translateY(100%);
}

.page-overlay.active {
    animation: slideInUp 0.5s var(--ease-out) forwards;
}

.page-overlay.exit {
    animation: slideOutDown 0.5s var(--ease-in) forwards;
}

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

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

/* Page Loader */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--dark-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-max);
    transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Loader Animation */
.loader {
    display: flex;
    gap: var(--space-2);
}

.loader-dot {
    width: 12px;
    height: 12px;
    background: var(--accent-cyan-500);
    border-radius: 50%;
    animation: loaderBounce 1.4s ease-in-out infinite both;
}

.loader-dot:nth-child(1) { animation-delay: -0.32s; }
.loader-dot:nth-child(2) { animation-delay: -0.16s; }
.loader-dot:nth-child(3) { animation-delay: 0s; }

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

/* ============================================
   SPECIAL EFFECTS
   ============================================ */

/* Gradient Text Animation */
.gradient-text-animate {
    background: linear-gradient(
        90deg,
        var(--accent-cyan-400),
        var(--accent-green-400),
        var(--accent-purple-400),
        var(--accent-cyan-400)
    );
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease infinite;
}

/* Typing Effect */
.typing-text {
    overflow: hidden;
    border-right: 2px solid var(--accent-cyan-500);
    white-space: nowrap;
    animation: 
        typing 3s steps(30) 1s forwards,
        blinkCursor 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blinkCursor {
    50% { border-color: transparent; }
}

/* Counter Animation (JS will handle the actual counting) */
.counter {
    display: inline-block;
    font-variant-numeric: tabular-nums;
}

/* Parallax Effect Base */
.parallax {
    will-change: transform;
}

/* Tilt Effect (needs JS) */
.tilt-effect {
    transform-style: preserve-3d;
    transition: transform var(--duration-300) var(--ease-out);
}

/* Magnetic Button Effect Base */
.magnetic {
    transition: transform var(--duration-200) var(--ease-out);
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }
    
    .neural-bg::before,
    .neural-node,
    .neural-grid {
        animation: none;
    }
}

/* ============================================
   PRINT - DISABLE ANIMATIONS
   ============================================ */

@media print {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
    
    .neural-bg {
        display: none;
    }
}