:root {
  --bg: #0f1215;
  --bg-soft: #161b21;
  --panel: #1a2027;
  --border: #262e37;
  --text: #d7dde3;
  --muted: #8a97a5;
  --accent: #5fd7a7;   /* growth / terminal green */
  --accent-2: #58b2ff; /* focus blue, matches TUI */
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -10%, #18211d 0%, var(--bg) 55%);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); }

.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  background: rgba(15,18,21,0.8); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand { font-family: var(--mono); font-weight: 700; font-size: 18px; color: var(--text); }
.leaf { color: var(--accent); }
.nav nav a { color: var(--muted); margin-left: 22px; font-size: 14px; }
.nav nav a:hover { color: var(--text); text-decoration: none; }
.nav .gh { color: var(--text); }

main { max-width: 960px; margin: 0 auto; padding: 0 24px; }
section { padding: 72px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }

.hero { text-align: center; padding-top: 96px; border-bottom: none; }
.eyebrow { font-family: var(--mono); color: var(--accent); letter-spacing: .12em; text-transform: lowercase; font-size: 13px; margin: 0 0 18px; }
.hero h1 { font-size: clamp(34px, 6vw, 60px); line-height: 1.08; margin: 0 0 20px; letter-spacing: -0.02em; }
.lede { color: var(--muted); font-size: 18px; max-width: 680px; margin: 0 auto 28px; }
.lede strong { color: var(--text); }
.cta { display: flex; gap: 14px; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 15px; border: 1px solid transparent; }
.btn.primary { background: var(--accent); color: #08130d; }
.btn.primary:hover { background: #74e6b9; text-decoration: none; }
.btn.ghost { border-color: var(--border); color: var(--text); background: var(--bg-soft); }
.btn.ghost:hover { border-color: var(--accent); text-decoration: none; }
.install {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--panel); border: 1px solid var(--border);
  padding: 10px 12px 10px 16px; border-radius: 10px; font-family: var(--mono); font-size: 14px;
}
.install code { color: var(--accent); }
.copy { background: transparent; border: 1px solid var(--border); color: var(--muted); border-radius: 6px; padding: 4px 10px; cursor: pointer; font-family: var(--mono); font-size: 12px; }
.copy:hover { color: var(--text); border-color: var(--accent); }

.showcase { padding-top: 40px; }
.window { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.45); background: var(--bg-soft); }
.titlebar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: #12171c; border-bottom: 1px solid var(--border); }
.titlebar span { width: 12px; height: 12px; border-radius: 50%; background: #3a434d; }
.titlebar span:nth-child(1) { background: #ff5f56; }
.titlebar span:nth-child(2) { background: #ffbd2e; }
.titlebar span:nth-child(3) { background: #27c93f; }
.titlebar p { margin: 0 0 0 8px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.window img { display: block; width: 100%; }

h2 { font-size: 30px; letter-spacing: -0.01em; margin: 0 0 8px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 28px; }
.grid article { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 22px; }
.grid h3 { margin: 0 0 8px; font-size: 17px; }
.grid p { margin: 0; color: var(--muted); font-size: 14px; }
.grid code { color: var(--accent); background: var(--bg-soft); padding: 1px 5px; border-radius: 4px; font-size: 13px; }

.tabs { display: flex; gap: 8px; margin: 20px 0 16px; }
.tab { background: var(--bg-soft); border: 1px solid var(--border); color: var(--muted); padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; font-family: var(--mono); }
.tab.active { color: #08130d; background: var(--accent); border-color: var(--accent); }
.player { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.player.hidden { display: none; }
.hint { color: var(--muted); font-size: 13px; margin-top: 12px; }

pre { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 22px; overflow-x: auto; font-family: var(--mono); font-size: 14px; line-height: 1.7; }
pre .c { color: var(--muted); }

footer { text-align: center; padding: 40px 24px 60px; color: var(--muted); font-size: 14px; }
footer p { margin: 4px 0; }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
  .nav nav a:not(.gh) { display: none; }
  section { padding: 52px 0; }
}