/* Анимации появления */
.animate-fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.animate-fade-in-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

.animate-fade-in-delay-2 {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Анимация для карточек при появлении в viewport */
.animate-in {
    animation: slideIn 0.6s ease forwards;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Анимация пульсации для узлов сети */
@keyframes nodePulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

.node:nth-child(1) { animation-delay: 0s; }
.node:nth-child(2) { animation-delay: 0.5s; }
.node:nth-child(3) { animation-delay: 1s; }
.node:nth-child(4) { animation-delay: 1.5s; }
.node:nth-child(5) { animation-delay: 2s; }