/* Continuous Signal Flow Animation for How IMVEST Works */
.work__steps-main-3 {
    position: relative;
}

.work__steps-main-3::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, rgba(0, 245, 160, 0.3) 0%, rgba(0, 217, 245, 0.3) 100%);
    transform: translateY(-50%);
    z-index: 1;
}

/* Animated dots flowing along the line */
.work__steps-main-3::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 10%;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #00F5A0 0%, #00D9F5 100%);
    border-radius: 50%;
    transform: translateY(-50%);
    z-index: 2;
    animation: signalFlow 3s linear infinite;
}

/* Multiple signal dots */
.working__step-item {
    position: relative;
    z-index: 3;
}

.working__step-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -50px;
    width: 6px;
    height: 6px;
    background: #00F5A0;
    border-radius: 50%;
    transform: translateY(-50%);
    opacity: 0;
    animation: pulseSignal 2s ease-in-out infinite;
    animation-delay: calc(var(--delay, 0) * 0.5s);
}

.working__step-item:nth-child(1) { --delay: 0; }
.working__step-item:nth-child(2) { --delay: 1; }
.working__step-item:nth-child(3) { --delay: 2; }
.working__step-item:nth-child(4) { --delay: 3; }

@keyframes signalFlow {
    0% {
        left: 10%;
        opacity: 0;
    }
    20% {
        opacity: 1;
    }
    80% {
        opacity: 1;
    }
    100% {
        left: 80%;
        opacity: 0;
    }
}

@keyframes pulseSignal {
    0%, 100% {
        opacity: 0;
        transform: translateY(-50%) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translateY(-50%) scale(1.2);
    }
}

/* Enhanced step circles with signal effect */
.working__step-round {
    position: relative;
    background: linear-gradient(135deg, #00F5A0 0%, #00D9F5 100%);
    border-radius: 50%;
    overflow: visible;
}

.working__step-round::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid rgba(0, 245, 160, 0.3);
    border-radius: 50%;
    animation: ripple 2s ease-out infinite;
}

@keyframes ripple {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .work__steps-main-3::before,
    .work__steps-main-3::after {
        display: none;
    }
    
    .working__step-item::before {
        display: none;
    }
}