body {
    font-family: 'Inter', sans-serif;
    background-color: #FDFBF8;
    color: #4A4A4A;
}
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');
.fade-in {
    animation: fadeIn 0.5s ease-in-out forwards;
    opacity: 0;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.nav-link {
    transition: color 0.3s, border-color 0.3s;
}
.nav-link.active {
    color: #D97706;
    border-bottom-color: #D97706;
}
.interactive-card {
    transition: transform 0.3s, box-shadow 0.3s;
}
.interactive-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}
.line {
    position: absolute;
    background-color: #9CA3AF;
    transform-origin: 0 50%;
    transition: all 0.5s ease-in-out;
}
.request-path, .response-path {
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: #F59E0B;
    border-radius: 50%;
    opacity: 0;
    transition: offset-path 1.5s ease-in-out, opacity 0.5s;
}
.flow-animation {
    animation: flow 1.5s ease-in-out forwards;
}
@keyframes flow {
    0% { offset-distance: 0%; opacity: 1; }
    90% { opacity: 1; }
    100% { offset-distance: 100%; opacity: 0; }
}