:root {
  --bg: #0b1220;
  --panel: #121a2b;
  --text: #e8eef7;
  --muted: #93a4bd;
  --accent: #14b8a6;
  --accent-2: #38bdf8;
  --border: #243147;
  --danger: #f87171;
  --ok: #4ade80;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #13233f 0%, var(--bg) 55%);
  color: var(--text);
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.nav {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; margin-bottom: 2rem;
}
.brand { font-weight: 700; letter-spacing: 0.02em; }
.brand span { color: var(--accent); }
.card {
  background: color-mix(in srgb, var(--panel) 92%, black);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
}
.hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 0.6rem; }
.hero p { color: var(--muted); line-height: 1.55; max-width: 40rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.metric .label { color: var(--muted); font-size: 0.85rem; }
.metric .value { font-size: 1.8rem; font-weight: 700; margin-top: 0.25rem; }
.btn {
  display: inline-block;
  background: var(--accent);
  color: #042f2e;
  font-weight: 700;
  border: 0;
  border-radius: 999px;
  padding: 0.65rem 1.2rem;
  cursor: pointer;
}
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
input, select {
  width: 100%;
  background: #0a101c;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  margin: 0.35rem 0 0.85rem;
}
label { font-size: 0.9rem; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.65rem 0.4rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); }
.err { color: var(--danger); }
.ok { color: var(--ok); }
.footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}
/* Intentionally tiny / low-contrast access affordance (not advertised as product) */
.footer .whisper a { color: #44566f; text-decoration: none; }
.footer .whisper a:hover { color: var(--muted); }
.hidden { display: none !important; }
.tabs { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 1rem; }
.tabs a.active { color: var(--accent); font-weight: 700; }