:root {
  --bg: #0b0f14;
  --card: rgba(255, 255, 255, 0.06);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --accent: #ffd166;
  --line: rgba(255, 255, 255, 0.14);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% 10%, rgba(255, 209, 102, 0.18), transparent 60%),
              radial-gradient(900px 500px at 90% 20%, rgba(6, 214, 160, 0.15), transparent 55%),
              linear-gradient(180deg, #070a0e, #0b0f14);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 980px; margin: 0 auto; padding: 18px; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand a { font-weight: 800; letter-spacing: 0.4px; color: var(--text); }
.nav a { margin-left: 14px; color: var(--muted); }
.nav a:hover { color: var(--text); }

.hero { padding: 20px 0 10px; }
h1 { margin: 0 0 10px; font-size: 32px; }
h2 { margin: 0 0 10px; font-size: 18px; }
.sub { color: var(--muted); margin: 0; }
.hint { color: var(--muted); margin: 8px 0 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 14px 0; backdrop-filter: blur(10px); }
.card.inner { background: rgba(255,255,255,0.04); }

.form label { display: block; margin: 10px 0; }
.form label > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.25);
  color: var(--text);
}
textarea { font-family: var(--mono); }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 820px) { .grid { grid-template-columns: repeat(1, minmax(0, 1fr)); } }

.nodes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 10px; }
@media (max-width: 820px) { .nodes { grid-template-columns: repeat(1, minmax(0, 1fr)); } }
.node { display: flex; gap: 10px; align-items: center; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: rgba(0,0,0,0.18); }
.node input { width: auto; }

.actions { margin-top: 12px; display: flex; gap: 10px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 10px 14px; border-radius: 12px; border: 1px solid rgba(255, 209, 102, 0.45); background: rgba(255, 209, 102, 0.14); color: var(--text); font-weight: 650; }
.btn:hover { background: rgba(255, 209, 102, 0.22); text-decoration: none; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { border-bottom: 1px solid var(--line); padding: 10px 8px; text-align: left; vertical-align: top; }
.table th { color: var(--muted); font-weight: 700; font-size: 13px; }
.mono { font-family: var(--mono); font-size: 13px; color: rgba(255,255,255,0.85); }

.footer { padding: 20px 0 6px; color: var(--muted); }

/* Print styles */
@media print {
  body { background: white; color: black; }
  .container { max-width: none; padding: 0; }
  .topbar, .footer { display: none; }
  .card { border: none; background: transparent; padding: 0; margin: 0; }
  a { color: black; text-decoration: none; }
}