/* --- Base and Background Layer CSS --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #000000;
    font-family: 'Inter', sans-serif;
    color: #f1f5f9;
}

#synapse-section {
    height: 100vh;
    width: 100%;
    position: relative;
    background-color: #000000;
}

#synapseCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.foreground-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* --- Front Layer (Nexus Skills) CSS --- */
.skills-section {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.nexus-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90vw;
    height: 90vw;
    max-width: 800px;
    max-height: 800px;
}

.nexus-core {
    position: absolute;
    width: 25%;
    height: 25%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.2), transparent 70%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow 0.4s ease;
    box-shadow: 0 0 30px rgba(14, 165, 233, 0.3), inset 0 0 20px rgba(14, 165, 233, 0.2);
    z-index: 10;
    /* Initial state for animation */
    opacity: 0;
    transform: scale(0.5);
}

#core-skill-name {
    font-family: "Poppins", sans-serif;
    font-size: clamp(1rem, 4vw, 1.8rem);
    color: #fff;
    opacity: 0;
    transition: opacity 0.4s ease;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    user-select: none;
    position: absolute;
    z-index: 11;
    pointer-events: none;
}

.skill-node {
    position: absolute;
    width: 11.25%;
    height: 11.25%;
    border-radius: 50%;
    background-color: #000000;
    background-image: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0.05) 80%);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 5;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    /* Initial state for animation */
    opacity: 0;
    transform: scale(0.5);
}

.skill-node img {
    width: 61%;
    height: 61%;
    object-fit: contain;
}

.skill-node img[alt="JavaScript"],
.skill-node img[alt="TypeScript"] {
    width: 67%;
    height: 67%;
}

#connector-svg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    overflow: visible;
}

#connector-line {
    stroke-width: 4px;
    opacity: 0;
    transition: opacity 0.3s ease, stroke-dashoffset 0.3s ease-out;
    filter: drop-shadow(0 0 8px rgba(var(--line-glow-color), 0.9));
}

.skill-node:hover {
    transform: scale(1.2);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2), 0 0 25px rgba(var(--aura-color), 0.6);
    z-index: 20;
}

/* --- MODIFIED: Sequential Animation Styles --- */
@keyframes fadeInScale {
    0% { 
        opacity: 0; 
        transform: scale(0.5); 
    }
    100% { 
        opacity: 1; 
        transform: scale(1); 
    }
}

.fade-in-scale {
    animation: fadeInScale 0.6s ease forwards;
}

/* --- MODIFIED: Responsive Improvements --- */
@media (max-width: 652px) {
    .skill-node {
        width: 13.5%;
        height: 13.5%;
    }
}

/* --- Small Screen Responsiveness --- */
@media (max-width: 499px) {
    .skill-node {
        width: 15%;
        height: 15%;
    }
}