:root {
 --bg:#090b12;
 --panel:rgba(15,20,32,.90);
 --text:#eef2ff;
 --muted:#a8b0c2;
 --accent:#7c3aed;
 --accent2:#22d3ee;
 --tab-bg:#f8fafc;
 --tab-text:#111827;
 --tab-border:rgba(255,255,255,.30);
}
body { background: radial-gradient(circle at top, color-mix(in srgb, var(--accent) 24%, transparent), transparent 35%), linear-gradient(180deg, var(--bg), #020306); }