:root {
  color-scheme: dark;
  --mine-ink: #f3f5ef;
  --mine-muted: #b5bdb5;
  --mine-panel: rgba(20, 30, 28, 0.92);
  --mine-panel-soft: rgba(33, 45, 41, 0.82);
  --mine-line: rgba(188, 207, 190, 0.22);
  --mine-gold: #efbd68;
  --mine-danger: #e46f62;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  background: radial-gradient(circle at 12% 10%, rgba(84, 118, 91, 0.34), transparent 30rem), linear-gradient(145deg, #101a18 0%, #17231f 45%, #0b1211 100%);
  color: var(--mine-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, select { font: inherit; }
button { touch-action: manipulation; }
.minesweeper-page { min-height: 100vh; padding: clamp(5.5rem, 12vw, 8rem) clamp(1rem, 3vw, 2rem) 3rem; }
.minesweeper-game { width: min(1120px, 100%); margin: 0 auto; }
.minesweeper-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 1.5rem; }
.minesweeper-heading h1 { margin: 0.1rem 0 0.55rem; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.5rem, 7vw, 5.5rem); font-weight: 600; letter-spacing: -0.045em; line-height: 0.95; }
.minesweeper-heading p:not(.minesweeper-kicker) { max-width: 48rem; margin: 0; color: var(--mine-muted); font-size: clamp(1rem, 2vw, 1.15rem); line-height: 1.65; }
.minesweeper-kicker { margin: 0; color: var(--mine-gold); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.minesweeper-actions { display: flex; align-items: end; gap: 0.75rem; flex: 0 0 auto; }
.difficulty-control { display: grid; gap: 0.35rem; color: var(--mine-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
select, .minesweeper-actions button, .minesweeper-toolbar button, .minesweeper-result button { min-height: 2.8rem; border: 1px solid var(--mine-line); border-radius: 0.7rem; background: var(--mine-panel-soft); color: var(--mine-ink); padding: 0.7rem 0.95rem; cursor: pointer; }
button:hover, select:hover { border-color: rgba(239, 189, 104, 0.65); }
button:focus-visible, select:focus-visible, .mine-cell:focus-visible { outline: 3px solid var(--mine-gold); outline-offset: 2px; }
.minesweeper-hud { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; margin-bottom: 0.75rem; }
.minesweeper-hud > div { display: grid; gap: 0.25rem; min-height: 5rem; padding: 1rem; border: 1px solid var(--mine-line); border-radius: 0.85rem; background: var(--mine-panel); }
.minesweeper-hud span { color: var(--mine-muted); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.minesweeper-hud strong { font-size: clamp(1.25rem, 3vw, 1.8rem); font-variant-numeric: tabular-nums; }
.minesweeper-toolbar { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.75rem; padding: 0.75rem; border: 1px solid var(--mine-line); border-radius: 0.85rem; background: rgba(15, 24, 22, 0.72); }
.minesweeper-toolbar button[aria-pressed="true"] { border-color: var(--mine-gold); background: rgba(239, 189, 104, 0.16); color: #ffd995; }
.minesweeper-toolbar p { margin: 0; color: var(--mine-muted); font-size: 0.9rem; line-height: 1.45; }
.minesweeper-stage { overflow: auto; padding: clamp(0.55rem, 2vw, 1rem); border: 1px solid var(--mine-line); border-radius: 1rem; background: linear-gradient(rgba(255,255,255,0.025), rgba(255,255,255,0)), #0b1211; box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.32); -webkit-overflow-scrolling: touch; }
.minesweeper-board { --cell-size: 2.35rem; display: grid; grid-template-columns: repeat(var(--columns), var(--cell-size)); gap: 0.22rem; width: max-content; margin: 0 auto; user-select: none; }
.minesweeper-board[data-preset="intermediate"] { --cell-size: 2rem; }
.minesweeper-board[data-preset="expert"] { --cell-size: 1.85rem; }
.mine-cell { display: grid; place-items: center; width: var(--cell-size); height: var(--cell-size); padding: 0; border: 1px solid rgba(210, 226, 213, 0.26); border-radius: 0.36rem; background: linear-gradient(145deg, #40534a, #263730); color: var(--mine-ink); box-shadow: inset 1px 1px 0 rgba(255,255,255,0.1), 0 2px 3px rgba(0,0,0,0.28); font-size: calc(var(--cell-size) * 0.5); font-weight: 900; line-height: 1; cursor: pointer; }
.mine-cell:hover:not(.mine-cell--revealed) { background: linear-gradient(145deg, #50665b, #30443b); }
.mine-cell--revealed { border-color: rgba(199, 211, 202, 0.12); background: #17231f; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.015); cursor: default; }
.mine-cell--flagged { color: var(--mine-gold); }
.mine-cell--mine { color: #ffd5cf; background: #522c29; }
.mine-cell--exploded { background: var(--mine-danger); color: #1c0907; }
.mine-cell--wrong { color: var(--mine-danger); text-decoration: line-through; }
.mine-cell--1 { color: #8ec5ff; }
.mine-cell--2 { color: #83d39d; }
.mine-cell--3 { color: #f58f83; }
.mine-cell--4 { color: #bd9af1; }
.mine-cell--5 { color: #efbd68; }
.mine-cell--6 { color: #7fd8d0; }
.mine-cell--7 { color: #d6d6d6; }
.mine-cell--8 { color: #aeb5ad; }
.minesweeper-result { margin-top: 0.85rem; padding: 1.2rem; border: 1px solid var(--mine-line); border-radius: 0.85rem; background: var(--mine-panel); }
.minesweeper-result h2 { margin: 0 0 0.35rem; font-size: 1.35rem; }
.minesweeper-result p { margin: 0 0 0.9rem; color: var(--mine-muted); }
.minesweeper-result[hidden] { display: none; }
.minesweeper-help, .minesweeper-live { margin: 0.9rem 0 0; color: var(--mine-muted); font-size: 0.88rem; line-height: 1.5; }
.minesweeper-live { min-height: 1.4em; }
@media (max-width: 760px) {
  .minesweeper-heading { align-items: stretch; flex-direction: column; gap: 1.25rem; }
  .minesweeper-actions { align-items: stretch; flex-direction: column; }
  .minesweeper-hud { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .minesweeper-toolbar { align-items: stretch; flex-direction: column; }
  .minesweeper-board { --cell-size: 2.15rem; }
  .minesweeper-board[data-preset="intermediate"] { --cell-size: 1.9rem; }
  .minesweeper-board[data-preset="expert"] { --cell-size: 1.75rem; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }