:root {
  --bg: #0f1220;
  --panel: #171b2d;
  --text: #e7ecff;
  --muted: #9aa4d1;
  --accent: #7aa2ff;
  --accent-2: #6be6b5;
  --danger: #ff8b8b;
  --border: #2a3152;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Arial,
    sans-serif;
  padding: 20px;
}
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}
h1 {
  margin: 0 0 6px;
  font-size: 1.25rem;
}
.sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}
.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
}
label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}
input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0f1324;
  color: var(--text);
  padding: 8px 10px;
}
button {
  margin-top: 14px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #09112b;
  font-weight: 700;
  padding: 9px 12px;
  cursor: pointer;
}
.result {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.pill {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #10162b;
}
.k {
  color: var(--muted);
  font-size: 0.82rem;
}
.v {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 3px;
}
.ok {
  color: var(--accent-2);
}
.bad {
  color: var(--danger);
}
.note {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 6px;
}
canvas {
  width: 100% !important;
  height: 460px !important;
}
@media (max-width: 900px) {
  .grid,
  .result {
    grid-template-columns: 1fr 1fr;
  }
  canvas {
    height: 320px !important;
  }
}