:root {
  --bg: #0a0e1a;
  --panel: #121829;
  --ink: #e6ecff;
  --accent: #7af7c8;
  --accent2: #6ea8ff;
  --muted: #8b95b5;
  --border: #243049;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Courier New", ui-monospace, monospace;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

.hero {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: radial-gradient(circle at 50% 0%, #16203a 0%, var(--bg) 70%);
}

.logo { width: 120px; height: 120px; }

.hero h1 {
  margin: 0.5rem 0 0.2rem;
  font-size: 2rem;
  letter-spacing: 0.08em;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline { color: var(--muted); margin: 0; font-size: 0.85rem; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  display: grid;
  gap: 1.5rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
}

.panel h2 { margin-top: 0; color: var(--accent); }
.panel h3 { color: var(--accent2); margin-bottom: 0.4rem; }

button#run {
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color: #06121f;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  font-family: inherit;
}

.status { color: var(--accent); min-height: 1.2em; }

.kernel {
  border-left: 3px solid var(--accent2);
  padding-left: 0.9rem;
  margin: 1rem 0;
}

pre {
  background: #0c1220;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  overflow-x: auto;
  color: var(--ink);
  font-size: 0.85rem;
}

.usage { width: 100%; border: 1px solid var(--border); border-radius: 8px; background: #0c1220; }

code { color: var(--accent); }

footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
}

a { color: var(--accent2); }