:root {
  --bg: #0d1623;
  --panel: #132a46;
  --text: #eaf2ff;
  --muted: #9db2cc;
  --accent: #df4f4f;
  --ok: #28d7c5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
header, footer { max-width: 1200px; margin: 0 auto; padding: 20px 16px; }
h1 { margin: 0 0 6px; font-size: 2rem; }
header p { margin: 0; color: var(--muted); }
.grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8px 16px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
}
.card {
  background: var(--panel);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  padding: 14px;
}
.card h2 { margin: 0 0 6px; font-size: 1.02rem; }
.desc { color: var(--muted); margin: 0 0 10px; font-size: .9rem; }
form { display: grid; gap: 8px; }
label { display: grid; gap: 3px; font-size: .84rem; color: var(--muted); }
input, select, button {
  width: 100%;
  border: 1px solid rgba(255,255,255,.14);
  background: #0f1f33;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
}
button {
  border: 0;
  background: var(--accent);
  font-weight: 600;
  cursor: pointer;
}
.share-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,.2);
  color: var(--text);
}
.result {
  display: block;
  margin-top: 10px;
  padding: 10px;
  border-radius: 8px;
  background: rgba(40,215,197,.12);
  border: 1px solid rgba(40,215,197,.35);
  color: var(--ok);
  font-weight: 600;
  white-space: pre-wrap;
}
small { color: var(--muted); }