:root {
  --bg: #0b0f14;
  --panel: #0f1520;
  --border: #1b2330;
  --text: #e6edf3;
  --muted: #9fb0c0;
  --accent: #26d07c;
  --accent-2: #4ea1ff;
  --warn: #ffb454;
  --danger: #ff6b6b;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--mono);
  color: var(--text);
  background: radial-gradient(1200px 600px at 0% 0%, #0c1320 0%, var(--bg) 35%, var(--bg) 100%);
}

.app { max-width: 1200px; margin: 0 auto; padding: 24px; }
.app-header { display: flex; align-items: baseline; gap: 16px; margin-bottom: 16px; }
.app-header h1 { margin: 0; font-weight: 800; letter-spacing: 1px; }
.subtitle { color: var(--muted); }

.main { display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }
.stage { display: grid; grid-template-columns: 1fr 280px; gap: 16px; align-items: start; }

canvas#game {
  background: linear-gradient(180deg, #0d1522, #0b1018);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: inset 0 0 32px rgba(0,0,0,0.35);
}

.hud { display: flex; flex-direction: column; gap: 12px; }
.hud-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.hud-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px; }
.hud-title { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.hud-value { font-size: 22px; font-weight: 700; }

canvas#next, canvas#hold {
  background: #0b1018;
  border: 1px dashed var(--border);
  border-radius: 6px;
}

.controls { display: flex; gap: 8px; }
.controls button {
  padding: 8px 12px;
  border-radius: 6px;
  background: #0c1320;
  color: var(--text);
  border: 1px solid var(--border);
  cursor: pointer;
}
.controls button.primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border: none; color: #041b11; font-weight: 800; }
.controls button:hover { filter: brightness(1.1); }

.help { display: grid; grid-template-columns: 80px 1fr; gap: 6px 12px; align-items: center; color: var(--muted); font-size: 12px; }
.kbd { background: #0b1018; border: 1px solid var(--border); padding: 2px 6px; border-radius: 4px; color: var(--text); width: max-content; }

.sidebar { display: flex; flex-direction: column; gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.card-title { font-weight: 700; margin-bottom: 8px; letter-spacing: .5px; }

.wallet-row { display: grid; grid-template-columns: 100px 1fr; gap: 8px; align-items: center; }
.wallet-row code { background: #0b1018; border: 1px dashed var(--border); padding: 6px; border-radius: 6px; word-break: break-all; }

.chain-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 8px; }
.section-title { color: var(--muted); margin: 10px 0 6px; font-size: 12px; }
.list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.list li { background: #0b1018; border: 1px solid var(--border); border-radius: 8px; padding: 8px; font-size: 12px; }
.list li .hash { color: var(--muted); word-break: break-all; }
.list li .badge { background: #0c1624; border: 1px solid var(--border); padding: 2px 6px; border-radius: 999px; font-size: 11px; margin-right: 6px; }

.nft-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.nft-list li { background: #0b1018; border: 1px solid var(--border); border-radius: 8px; padding: 8px; font-size: 12px; display: grid; gap: 6px; }
.nft-swatch { width: 100%; height: 56px; border-radius: 6px; border: 1px solid var(--border); }

.app-footer { margin-top: 24px; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 12px; }
.app-footer a { color: var(--accent-2); text-decoration: none; }

@media (max-width: 1024px) {
  .main { grid-template-columns: 1fr; }
  .stage { grid-template-columns: 1fr; }
}