:root {
  --bg: #0a0f0c;
  --ink: #eafff2;
  --accent: #46f08a;
  --food: #ff5d7a;
  --grid: rgba(70,240,138,.06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: radial-gradient(circle at 50% 20%, #11201a, #0a0f0c 70%);
  color: var(--ink);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  display: grid;
  place-items: center;
  min-height: 100vh;
  overflow: hidden;
}
.wrap { width: min(92vw, 600px); }
header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 14px;
}
h1 {
  font-size: 34px;
  letter-spacing: 8px;
  font-weight: 800;
  color: var(--accent);
  text-shadow: 0 0 24px rgba(70,240,138,.4);
}
.scores { display: flex; gap: 22px; }
.scores div { text-align: right; }
.lbl { display: block; font-size: 10px; letter-spacing: 2px; color: #6f8a7c; }
.scores b { font-size: 26px; font-variant-numeric: tabular-nums; }
.board {
  position: relative;
  aspect-ratio: 1;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.55), inset 0 0 0 1px rgba(70,240,138,.18);
}
canvas { width: 100%; height: 100%; display: block; background: #0b1410; touch-action: none; }
.overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px; text-align: center; padding: 24px;
  background: rgba(10,15,12,.82); backdrop-filter: blur(6px);
}
.overlay.hidden { display: none; }
.overlay h2 { font-size: 30px; letter-spacing: 2px; }
.overlay p { color: #9fc4b2; max-width: 340px; font-size: 13px; line-height: 1.5; }
.modes { display: flex; gap: 8px; }
.modes button {
  background: transparent; border: 1px solid rgba(70,240,138,.3);
  color: #bfeed6; padding: 8px 18px; border-radius: 999px;
  cursor: pointer; font-family: inherit; font-size: 13px; letter-spacing: 1px;
}
.modes button.sel { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 16px rgba(70,240,138,.25); }
.start {
  background: var(--accent); color: #052012; border: none;
  padding: 12px 40px; border-radius: 999px; font-family: inherit;
  font-weight: 700; font-size: 15px; letter-spacing: 2px; cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.start:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(70,240,138,.35); }
.foot { text-align: center; color: #5f7a6c; font-size: 12px; letter-spacing: 1px; margin-top: 14px; }