:root {
  --bg: #07110c;
  --bg-2: #0b1a12;
  --panel: #0e1d15;
  --panel-2: #13261c;
  --line: #1c3a28;
  --line-2: #2a5640;
  --text: #e7f6ea;
  --muted: #7fa88a;
  --grass: #3ee08a;
  --grass-dim: #1e7a4a;
  --gold: #f3d04a;
  --water: #3a8fd4;
  --danger: #e15b5b;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --display: "Syne", "Trebuchet MS", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); }
body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(62, 224, 138, .12), transparent 55%),
    radial-gradient(900px 500px at -10% 110%, rgba(243, 208, 74, .08), transparent 50%),
    linear-gradient(180deg, #07110c, #08140f 40%, #06100b);
}
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--grass); }

.app-nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px;
  padding: 12px 22px;
  background: rgba(7, 17, 12, .78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand img { width: 34px; height: 34px; border-radius: 9px; }
.brand strong { font-family: var(--display); font-size: 18px; letter-spacing: .02em; }
.nav-links { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.nav-links button, .chip, .btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
}
.nav-links button.active, .chip.active { border-color: var(--grass); color: var(--grass); background: #10281b; }
.btn-primary { background: var(--grass); color: #04210f; border-color: var(--grass); font-weight: 600; }
.btn-gold { background: var(--gold); color: #2a2100; border-color: var(--gold); font-weight: 600; }
.btn-ghost { background: transparent; }

.view { display: none; min-height: calc(100vh - 61px); }
.view.active { display: block; }

.hero {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  padding: 56px 8vw 32px;
  align-items: center;
}
.kicker { color: var(--grass); font-weight: 600; letter-spacing: .16em; font-size: 12px; text-transform: uppercase; }
h1, h2, h3 { font-family: var(--display); margin: 0 0 12px; }
h1 { font-size: clamp(36px, 5vw, 64px); line-height: .95; }
.lede { font-size: 18px; color: var(--muted); max-width: 52ch; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0; }
.stats-row { display: flex; gap: 22px; color: var(--muted); font-size: 13px; }
.stats-row b { color: var(--text); display: block; font-size: 20px; font-family: var(--display); }

.hero-stage {
  height: 420px;
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(180deg, #102418, #07140e);
  box-shadow: var(--shadow);
  position: relative;
}
.hero-stage canvas, .viewport canvas { width: 100%; height: 100%; display: block; }
.stage-caption {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(7, 17, 12, .72);
  border: 1px solid var(--line);
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 12px;
  color: var(--muted);
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 10px 8vw 64px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
}
.card h3 { font-size: 20px; }
.card p { color: var(--muted); margin: 0; }

.studio {
  display: grid;
  grid-template-columns: 280px 1fr 320px;
  height: calc(100vh - 61px);
}
.side {
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow: auto;
  padding: 14px;
}
.side.right { border-right: 0; border-left: 1px solid var(--line); }
.viewport { position: relative; background: #08140f; min-height: 420px; }
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 14px; }
.tool-grid button { text-align: left; }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
}
.palette { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; margin-top: 8px; }
.swatch {
  width: 100%; aspect-ratio: 1;
  border-radius: 6px; border: 1px solid var(--line);
  cursor: pointer;
}
.swatch.active { outline: 2px solid var(--gold); }
.hud {
  position: absolute; top: 12px; left: 12px; right: 12px;
  display: flex; justify-content: space-between; gap: 8px; pointer-events: none;
}
.hud > * { pointer-events: auto; }
.pill {
  background: rgba(7,17,12,.75);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  color: var(--muted);
}
.log {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px;
  height: 160px;
  overflow: auto;
  white-space: pre-wrap;
}
.codebox {
  font-family: var(--mono);
  font-size: 12px;
  background: #06140d;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  overflow: auto;
  max-height: 360px;
  white-space: pre-wrap;
}
.mcp {
  padding: 36px 8vw 64px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 24px;
}
.row { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.warn { color: var(--gold); font-size: 13px; }
.parts { display: flex; flex-direction: column; gap: 6px; }
.part {
  display: grid;
  grid-template-columns: 14px 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.part.active { border-color: var(--gold); }
.dot { width: 12px; height: 12px; border-radius: 3px; }

@media (max-width: 980px) {
  .hero, .features, .mcp, .studio { grid-template-columns: 1fr; }
  .studio { height: auto; }
  .viewport { height: 52vh; }
  .side.right { border-left: 0; border-top: 1px solid var(--line); }
}