:root {
  --bg: #0b0f14;
  --panel: #111821;
  --grid: #1c2a39;
  --text: #d6e3f0;
  --accent: #48d1b8;
  --muted: #7f93aa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 20%, #14202e, #0b0f14 60%);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
}

header, footer {
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(90deg, #0f1824, #0b0f14);
  border-bottom: 1px solid #0f2233;
}

footer {
  border-top: 1px solid #0f2233;
  border-bottom: none;
}

.title {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.meta {
  font-size: 0.9rem;
  color: var(--muted);
}

main {
  flex: 1;
  display: grid;
  grid-template-rows: 1fr 1.2fr;
  gap: 12px;
  padding: 12px;
}

.panel {
  background: var(--panel);
  border: 1px solid #13263b;
  border-radius: 10px;
  padding: 8px;
  position: relative;
}

canvas {
  width: 100%;
  height: 100%;
  border-radius: 6px;
  background: #06090d;
}

#status {
  color: var(--muted);
}

@media (max-width: 820px) {
  main {
    grid-template-rows: 1fr 1fr;
  }
}