:root {
  --bg: #12141a;
  --panel: #1b1f2a;
  --border: #2c3344;
  --text: #e8ecf4;
  --muted: #9aa3b5;
  --accent: #3d9a78;
  --accent-hover: #48b08a;
  --danger: #c45c5c;
  --danger-hover: #d46a6a;
  --warn: #c9a84c;
  --input: #0f1117;
  --row-hover: #222836;
  --main-max: 720px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, #1a2433 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 100%, #1a2220 0%, transparent 50%),
    var(--bg);
}

.top {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px 14px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.top h1 {
  margin: 0 0 6px;
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.top .sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35em;
  font-size: 0.9rem;
  color: var(--muted);
}

.nav a {
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.nav .is-active {
  color: var(--text);
  font-weight: 600;
}

main {
  max-width: var(--main-max);
  margin: 0 auto;
  padding: 24px 20px 64px;
}

.mono {
  font-family: "IBM Plex Mono", "SF Mono", ui-monospace, monospace;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}