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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

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

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

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

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

@keyframes stackFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(2deg);
    }
}

/* Scroll Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

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

.slide-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

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

.slide-up:nth-child(1) { transition-delay: 0.1s; }
.slide-up:nth-child(2) { transition-delay: 0.2s; }
.slide-up:nth-child(3) { transition-delay: 0.3s; }
.slide-up:nth-child(4) { transition-delay: 0.4s; }

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s ease;
}

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

/* Button Animations */
.pulse-btn {
    animation: pulse 2s infinite;
}

.bounce-btn {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Icon Animations */
.rotate-icon {
    transition: transform 0.3s ease;
}

.feature-card:hover .rotate-icon {
    transform: rotate(360deg) scale(1.2);
}

/* Text Glow Animation */
.glow-text {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                     0 0 20px rgba(255, 255, 255, 0.3),
                     0 0 30px rgba(255, 255, 255, 0.2);
    }
    to {
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.8),
                     0 0 30px rgba(255, 255, 255, 0.5),
                     0 0 40px rgba(255, 255, 255, 0.3);
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Particle Animation */
@keyframes particle-float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

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

.animated-gradient {
    background: linear-gradient(270deg, #00d4aa, #00a8ff, #667eea, #764ba2);
    background-size: 800% 800%;
    animation: gradient-shift 10s ease infinite;
}