/**
 * System Architecture Section Animations
 * Lightweight, premium animations for enhanced perception
 * Respects prefers-reduced-motion
 */

/* Fade-in + upward motion for diagram container */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Soft fade-in for component cards */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Diagram container animation */
.di-system-diagram {
    animation: fadeInUp 0.8s ease-out forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

/* Component cards staggered fade-in */
.di-system-component {
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0;
}

.di-system-component:nth-child(1) {
    animation-delay: 0.6s;
}

.di-system-component:nth-child(2) {
    animation-delay: 0.75s;
}

.di-system-component:nth-child(3) {
    animation-delay: 0.9s;
}

.di-system-component:nth-child(4) {
    animation-delay: 1.05s;
}

/* Context line subtle fade */
.di-system-context {
    animation: fadeIn 0.6s ease-out forwards;
    animation-delay: 0s;
    opacity: 0;
}

/* CTA fade-in */
.di-system-cta {
    animation: fadeIn 0.6s ease-out forwards;
    animation-delay: 1.2s;
    opacity: 0;
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
    .di-system-diagram,
    .di-system-component,
    .di-system-context,
    .di-system-cta {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* Optional: Subtle hover effect on component cards (non-intrusive) */
.di-system-component {
    transition: transform 0.2s ease;
}

.di-system-component:hover {
    transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
    .di-system-component:hover {
        transform: none;
    }
}