:root {
    --bg-dark: #020204;
    --accent-orange: #f39c12;
    --card-border: rgba(255, 255, 255, 0.15);
    --text-gray: #a0a0a0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body { 
    background-color: var(--bg-dark); 
    color: white; 
    overflow-x: hidden;
}

#spaceCanvas {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    z-index: -1; 
    pointer-events: none;
}

/* --- NAVIGATION --- */
nav {
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    padding: 30px 10%; 
    background: transparent;
}

.logo { font-weight: 800; font-size: 1.5rem; letter-spacing: 2px; }

.nav-links a {
    color: white; 
    text-decoration: none; 
    margin-left: 30px;
    font-size: 0.9rem; 
    opacity: 0.7; 
    transition: 0.3s;
}

.nav-links a:hover { opacity: 1; color: var(--accent-orange); }

/* --- HEADER --- */
.main-header {
    text-align: center;
    margin: 60px 0 40px;
}

.main-header h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    letter-spacing: 12px;
    text-transform: uppercase;
    background: linear-gradient(to bottom, #fff 40%, #555 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- GRID & NODES --- */
.flow-container {
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 20px 100px;
}

.category-node {
    margin-bottom: 60px; 
    text-align: center;
    opacity: 0; 
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.category-node.reveal { opacity: 1; transform: translateY(0); }

.node-label {
    color: var(--accent-orange);
    font-weight: 800; 
    padding: 10px 30px;
    text-transform: uppercase; 
    letter-spacing: 4px;
    font-size: 0.9rem; 
    position: relative;
}

.skills-grid {
    display: flex; 
    justify-content: center; 
    gap: 20px; 
    flex-wrap: wrap;
    perspective: 1000px; 
    margin-top: 30px;
}

/* --- SKILL CARDS --- */
.skill-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1.5px solid var(--card-border);
    backdrop-filter: blur(10px);
    padding: 30px 10px; 
    width: 140px; 
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer; 
    position: relative; 
    overflow: hidden;
}

.skill-card i {
    font-size: 2.5rem; 
    margin-bottom: 15px; 
    display: block;
    transition: transform 0.3s ease;
}

.skill-card span {
    display: block; 
    font-size: 0.75rem; 
    font-weight: 700;
    color: #eee; 
    letter-spacing: 1px; 
    text-transform: uppercase;
}

.skill-card:hover { 
    border-color: var(--hover-color, #fff); 
    box-shadow: 0 0 30px var(--hover-glow, rgba(255,255,255,0.2)); 
    transform: scale(1.05) translateY(-5px); 
}

.skill-card:hover i { transform: scale(1.2); color: var(--hover-color); }

/* --- TECH COLORS --- */
.c-icon { --hover-color: #5C6BC0; }
.cpp-icon { --hover-color: #00599C; }
.java-icon { --hover-color: #f8981d; }
.js-icon { --hover-color: #f7df1e; }
.ts-icon { --hover-color: #3178c6; }
.py-icon { --hover-color: #3776ab; }
.html-icon { --hover-color: #e34f26; }
.css-icon { --hover-color: #1572b6; }
.react-icon { --hover-color: #61dafb; }
.next-icon { --hover-color: #ffffff; }
.node-icon { --hover-color: #339933; }
.ex-icon { --hover-color: #828282; }
.tw-icon { --hover-color: #06b6d4; }
.mg-icon { --hover-color: #47A248; }
.sql-icon { --hover-color: #4479A1; }
.neo-icon { --hover-color: #008CC1; }

/* --- FOOTER --- */
footer {
    padding: 20px 8%;
    text-align: center;
    border-top: 1px solid var(--card-border);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
}

.footer-text {
    font-size: 0.85rem;
    color: var(--text-gray);
}

.heart { color: #ff4d4d; display: inline-block; animation: beat 1.2s infinite; }

@keyframes beat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }

}