:root {
  --bg: #16161e;
  --bg-panel: #1a1b26;
  --bg-raised: #24283b;
  --border: #2f3549;
  --text: #c0caf5;
  --text-dim: #565f89;
  --accent: #7aa2f7;
  --safe: #9ece6a;
  --danger: #f7768e;
  --warn: #e0af68;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header { padding: 18px 24px 10px; text-align: center; }
header h1 { font-size: 22px; letter-spacing: 0.5px; }
header p { color: var(--text-dim); font-size: 13px; margin-top: 2px; }

main { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 8px 16px; }

.controls { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; }

button, select {
  background: var(--bg-raised);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.active { background: var(--accent); color: #16161e; border-color: var(--accent); font-weight: 600; }

.chk { font-size: 12px; color: var(--text-dim); display: flex; align-items: center; gap: 5px; cursor: pointer; }
.chk input { accent-color: var(--accent); }

.hud { display: flex; gap: 22px; font-size: 14px; color: var(--text); }
.hud #record { color: var(--text-dim); }

#grid-wrap {
  max-width: calc(100vw - 24px);
  overflow-x: auto;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
}

#grid { display: grid; gap: 2px; }

.cell {
  width: 27px;
  height: 27px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  border-radius: 4px;
  user-select: none;
  position: relative;
}

.cell.covered {
  background: var(--bg-raised);
  border: 1px solid #303654;
  cursor: pointer;
}
.cell.covered:hover { border-color: var(--accent); }

.cell.covered .p {
  font-size: 9px;
  font-weight: 600;
  pointer-events: none;
}

.cell.revealed { background: #101018; border: 1px solid #1e2233; }
.cell.mine { background: #3b1e2a; }
.cell.boom { background: var(--danger); }
.cell.best { outline: 2px solid var(--accent); outline-offset: -1px; z-index: 1; }

.v1 { color: #7aa2f7; } .v2 { color: #9ece6a; } .v3 { color: #f7768e; }
.v4 { color: #bb9af7; } .v5 { color: #e0af68; } .v6 { color: #7dcfff; }
.v7 { color: #c0caf5; } .v8 { color: #565f89; }

.statusbar { font-size: 12px; color: var(--text-dim); max-width: 860px; text-align: center; min-height: 18px; }
.statusbar.win { color: var(--safe); }
.statusbar.lose { color: var(--danger); }

footer {
  margin-top: auto;
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 14px 24px;
  font-size: 12px;
  color: var(--text-dim);
}
footer a { color: var(--accent); text-decoration: none; }