* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #000;
  font-family: system-ui, Arial, sans-serif;
  color: #fff;
}

.topbar {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: #0e0e0e;
  border-bottom: 1px solid #222;
}

.logo {
  width: 36px;
  height: 36px;
  background: #e41e31;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 900;
}

.title b { display: block; font-size: 14px; }
.title span { font-size: 12px; color: #aaa; }

.buttons {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

button {
  background: #e41e31;
  border: 0;
  border-radius: 8px;
  padding: 6px 10px;
  color: #fff;
  cursor: pointer;
}

main {
  height: calc(100vh - 64px);
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #111;
}