:root {
  --bg-deep: #0f1720;
  --bg-mid: #173149;
  --panel: rgba(9, 18, 28, 0.82);
  --border: rgba(143, 181, 202, 0.38);
  --text: #eff8fc;
  --muted: #9eb8c8;
  --accent: #f6bd60;
  --accent-2: #74d3c3;
  --danger: #ef6f6c;
  --cell: #20384c;
  --cell-open: #d9e5e9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(circle at 18% 4%, #244d64 0%, transparent 34%),
    radial-gradient(circle at 88% 90%, #205a54 0%, transparent 36%),
    linear-gradient(150deg, var(--bg-deep), var(--bg-mid) 58%, #121827);
}

.minesweeper-page {
  width: min(1120px, 94vw);
  margin: 0 auto;
  padding: 1.6rem 0 2rem;
}

.topbar,
.controls,
.status-bar,
.board-wrap {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--panel);
  backdrop-filter: blur(8px);
}

.topbar {
  padding: 1rem 1.1rem;
}

.back-link {
  display: inline-block;
  color: var(--accent-2);
  text-decoration: none;
  margin-bottom: 0.55rem;
  font-size: 0.92rem;
}

.back-link:hover,
.back-link:focus-visible {
  text-decoration: underline;
}

.topbar h1 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  margin: 0;
}

.topbar p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.controls {
  margin-top: 1rem;
  padding: 0.95rem;
  display: flex;
  gap: 0.7rem;
  align-items: center;
  flex-wrap: wrap;
}

label,
.label {
  color: var(--muted);
  font-size: 0.86rem;
}

select,
button {
  border: 0;
  border-radius: 0.62rem;
  font: inherit;
  font-weight: 700;
}

select {
  color: var(--text);
  background: #1c3447;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(143, 181, 202, 0.35);
}

button {
  color: #09131d;
  padding: 0.6rem 0.95rem;
  cursor: pointer;
  background: linear-gradient(135deg, #f6c67b, #f2a84f);
}

button:hover,
button:focus-visible {
  transform: translateY(-1px);
}

.status-bar {
  margin-top: 0.8rem;
  padding: 0.85rem 0.95rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.status-bar > div {
  display: flex;
  gap: 0.42rem;
  align-items: baseline;
}

.status-bar span:last-child {
  font-size: 1.25rem;
  font-weight: 700;
}

#status-line {
  margin: 0 0 0 auto;
  color: var(--muted);
}

.board-wrap {
  margin-top: 0.9rem;
  padding: 0.9rem;
  overflow-x: auto;
}

.board {
  --cols: 9;
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(28px, 1fr));
  gap: 3px;
  min-width: calc(var(--cols) * 31px);
  max-width: calc(var(--cols) * 42px);
  margin: 0 auto;
}

.cell {
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.28rem;
  display: grid;
  place-items: center;
  min-width: 0;
  color: var(--text);
  background: linear-gradient(145deg, #2e516c, var(--cell));
  font: inherit;
  font-size: clamp(0.82rem, 2.5vw, 1rem);
  font-weight: 800;
  padding: 0;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.cell:hover,
.cell:focus-visible {
  transform: translateY(-1px);
  outline: 2px solid rgba(116, 211, 195, 0.55);
  outline-offset: 1px;
}

.cell.revealed {
  color: #21303d;
  background: var(--cell-open);
  border-color: rgba(25, 39, 48, 0.22);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.16);
}

.cell.flagged {
  color: var(--accent);
}

.cell.mine {
  color: #fff;
  background: linear-gradient(145deg, #d65f5d, #922e35);
}

.cell.num-1 {
  color: #2c6ecb;
}

.cell.num-2 {
  color: #25845d;
}

.cell.num-3 {
  color: #bf3e43;
}

.cell.num-4 {
  color: #5342af;
}

.cell.num-5,
.cell.num-6,
.cell.num-7,
.cell.num-8 {
  color: #6c3b27;
}

@media (max-width: 700px) {
  .minesweeper-page {
    width: min(100% - 1rem, 1120px);
    padding-top: 0.5rem;
  }

  .topbar,
  .controls,
  .status-bar,
  .board-wrap {
    border-radius: 0.75rem;
  }

  #status-line {
    flex-basis: 100%;
    margin-left: 0;
  }
}