:root {
  --bg: #0b0f19;
  --bg-alt: #111827;
  --card: rgba(255,255,255,0.06);
  --text: #e8d9ff;
  --muted: #cbb8e8;
  --accent: #d9a3ff;
  --link: #e7bcff;
  --border: rgba(170,125,255,0.35);
}
body.light {
  --bg: #f6f7fb;
  --bg-alt: #ffffff;
  --card: rgba(10,20,40,0.06);
  --text: #1b2140;
  --muted: #374166;
  --accent: #5a2ea3;
  --link: #4a2d91;
  --border: rgba(90,70,150,0.28);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Montserrat', sans-serif;
  background: radial-gradient(circle at top, #1b1030, var(--bg) 72%);
  color: var(--text);
  line-height: 1.6;
}
body.light { background: linear-gradient(180deg, #f8f9fd, #eef2ff); }
header, main, footer { max-width: 1024px; margin: 0 auto; padding: 22px; }
nav { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
nav a {
  color: var(--link);
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
}
nav a:focus, button:focus, input:focus, textarea:focus {
  outline: 2px solid #22d3ee;
  outline-offset: 2px;
}
h1, h2, h3 { color: var(--accent); }
.lead { color: var(--muted); max-width: 820px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin: 12px 0;
}
.grid { display: grid; gap: 14px; }
@media (min-width: 880px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
  .grid.three { grid-template-columns: repeat(3, 1fr); }
}
code, pre {
  background: rgba(0,0,0,0.28);
  border-radius: 8px;
}
pre { padding: 12px; overflow: auto; }
button, .btn {
  background: #7e22ce;
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 9px 14px;
  cursor: pointer;
}
.top-actions { margin-left: auto; display: flex; gap: 8px; }
small, .small { color: var(--muted); }