/* ========================================
   DeVPN-AI Landing Page - Animations
======================================== */

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

/* Pulse Glow Animation */
@keyframes pulse-glow {
    0%, 100% {
        text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
        transform: scale(1);
    }
    50% {
        text-shadow: 0 0 40px rgba(0, 217, 255, 0.8);
        transform: scale(1.05);
    }
}

/* Particle Drift Animation */
@keyframes particle-drift {
    0% {
        transform: translateY(0) translateX(0);
    }
    100% {
        transform: translateY(-100px) translateX(100px);
    }
}

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

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

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

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scale In */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Slide In Left */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide In Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Glow Pulse */
@keyframes glow-pulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 217, 255, 0.6);
    }
}

/* Border Glow */
@keyframes border-glow {
    0%, 100% {
        border-color: rgba(0, 217, 255, 0.3);
    }
    50% {
        border-color: rgba(0, 217, 255, 0.8);
    }
}

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

/* Wave Animation */
@keyframes wave {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* 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);
    }
}

/* Flip In */
@keyframes flipIn {
    from {
        transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    40% {
        transform: perspective(400px) rotateY(-10deg);
    }
    70% {
        transform: perspective(400px) rotateY(10deg);
    }
    to {
        transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}

/* Zoom In */
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
    }
}

/* Zoom Out */
@keyframes zoomOut {
    from {
        opacity: 1;
    }
    50% {
        opacity: 0;
        transform: scale(0.3);
    }
    to {
        opacity: 0;
    }
}

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

/* Animated Background Gradient */
.animated-gradient {
    background: linear-gradient(-45deg, #0A0E27, #1A1F3A, #00D9FF, #9D4EDD);
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
}

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

/* Rotate Effect */
.rotate-animation {
    animation: rotate 10s linear infinite;
}

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

/* Border Glow Effect */
.border-glow {
    animation: border-glow 2s ease-in-out infinite;
}

/* Shimmer Effect */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 3s infinite;
}

/* Bounce on Hover */
.bounce-hover {
    transition: transform 0.3s ease;
}

.bounce-hover:hover {
    animation: bounce 0.5s;
}

/* Hover Lift */
.hover-lift {
    transition: all 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 217, 255, 0.3);
}

/* Hover Scale */
.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Hover Glow */
.hover-glow {
    transition: all 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.6);
    border-color: var(--primary-cyan);
}

/* Text Gradient Animation */
.text-gradient-animated {
    background: linear-gradient(90deg, #00D9FF, #9D4EDD, #00FF88, #00D9FF);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 5s ease infinite;
}

/* Stagger Fade In Animation */
.stagger-fade-in > * {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.stagger-fade-in > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-fade-in > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-fade-in > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-fade-in > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-fade-in > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-fade-in > *:nth-child(6) { animation-delay: 0.6s; }

/* Loading Animation */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 217, 255, 0.2);
    border-top-color: #00D9FF;
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 25%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0.05) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* 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(0, 217, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

/* Particle Effect */
@keyframes particle-float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 1;
    }
    50% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.3;
    }
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-cyan);
    border-radius: 50%;
    animation: particle-float 4s ease-in-out infinite;
}

/* Neon Text Effect */
.neon-text {
    color: var(--primary-cyan);
    text-shadow: 
        0 0 10px rgba(0, 217, 255, 0.8),
        0 0 20px rgba(0, 217, 255, 0.6),
        0 0 30px rgba(0, 217, 255, 0.4),
        0 0 40px rgba(0, 217, 255, 0.2);
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Glitch Effect */
@keyframes glitch {
    0% {
        transform: translate(0);
    }
    20% {
        transform: translate(-2px, 2px);
    }
    40% {
        transform: translate(-2px, -2px);
    }
    60% {
        transform: translate(2px, 2px);
    }
    80% {
        transform: translate(2px, -2px);
    }
    100% {
        transform: translate(0);
    }
}

.glitch {
    position: relative;
}

.glitch:hover {
    animation: glitch 0.3s infinite;
}

/* Typing Effect */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary-cyan);
    }
}

.typing-effect {
    overflow: hidden;
    border-right: 2px solid var(--primary-cyan);
    white-space: nowrap;
    animation: 
        typing 3.5s steps(40, end),
        blink-caret 0.75s step-end infinite;
}

/* Fade In Sequence */
.fade-in-sequence {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

/* Delay utilities */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }
.delay-900 { animation-delay: 0.9s; }
.delay-1000 { animation-delay: 1s; }

/* Animation Speed utilities */
.animate-slow { animation-duration: 2s; }
.animate-normal { animation-duration: 1s; }
.animate-fast { animation-duration: 0.5s; }

/* Animation Fill Mode */
.fill-forwards { animation-fill-mode: forwards; }
.fill-backwards { animation-fill-mode: backwards; }
.fill-both { animation-fill-mode: both; }

/* 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;
    }
}