html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: #0a0f1e;
  font-family: "Segoe UI", system-ui, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
}

.sketch-toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding: 0.65rem 1rem;
  background: rgba(10, 15, 30, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 10;
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #5eead4;
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid rgba(94, 234, 212, 0.25);
  background: rgba(94, 234, 212, 0.08);
  transition: background 0.2s, color 0.2s;
}

.back-home:hover {
  background: rgba(94, 234, 212, 0.18);
  color: #a7f3ec;
}

#sketch-container {
  flex: 1;
  min-height: 0;
  width: 100%;
}

#sketch-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}