/* Minesweeper — shares layout primitives with Sudoku */

:root {
  --ms-blue: #4a5fc1;
  --ms-blue-dark: #3b4ca0;
  --ms-blue-tint: #edf0fb;
  --ms-blue-hover: #dde3f5;
  --ms-border: #bfc7d9;
  --ms-border-thin: #e4e8f0;
  --ms-text: #1b2545;
  --ms-muted: #8891aa;
  --ms-cell-hidden: #c8d2ef;
  --ms-cell-hidden-hover: #b3c0e8;
  --ms-cell-revealed: #ffffff;
  --ms-mine: #d94e4e;
  --ms-flag: #d94e4e;

  --n1: #1976d2;
  --n2: #388e3c;
  --n3: #d32f2f;
  --n4: #7b1fa2;
  --n5: #f57c00;
  --n6: #00838f;
  --n7: #455a64;
  --n8: #212121;
}

body { background: #ffffff; color: var(--ms-text); }

.ms-page {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.page-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  color: var(--ms-text);
  transition: background 120ms;
}
.back-btn:hover { background: var(--ms-blue-tint); }
.page-header h1 { margin: 0; font-size: 1.5rem; font-weight: 600; }

.ms-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: start;
}
@media (min-width: 900px) {
  .ms-layout {
    grid-template-columns: max-content 320px;
    gap: var(--space-2xl);
    justify-content: center;
  }
}

/* Difficulty bar */
.difficulty-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}
.difficulty-label { color: var(--ms-muted); font-weight: 500; }
.difficulty-btn {
  background: transparent;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--ms-muted);
  cursor: pointer;
  font-weight: 500;
  transition: color 120ms;
}
.difficulty-btn:hover { color: var(--ms-text); }
.difficulty-btn.is-active { color: var(--ms-blue); font-weight: 700; }
.difficulty-btn:focus-visible { outline: 2px solid var(--ms-blue); outline-offset: 4px; border-radius: 3px; }

/* Board */
.board-column { min-width: 0; display: flex; flex-direction: column; align-items: center; }
.board-frame { position: relative; display: inline-block; max-width: 100%; }

.ms-grid {
  --cell: clamp(22px, 4.8vw, 36px);
  display: grid;
  grid-template-columns: repeat(var(--cols, 9), var(--cell));
  grid-template-rows: repeat(var(--rows, 9), var(--cell));
  background: var(--ms-border);
  border: 2px solid var(--ms-border);
  border-radius: 4px;
  overflow: hidden;
  user-select: none;
  touch-action: manipulation;
  gap: 1px;
}

.ms-cell {
  position: relative;
  border: none;
  background: var(--ms-cell-hidden);
  padding: 0;
  font: inherit;
  font-size: calc(var(--cell) * 0.5);
  font-weight: 700;
  color: var(--ms-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 60ms;
  line-height: 1;
}
.ms-cell.hidden:hover { background: var(--ms-cell-hidden-hover); }
.ms-cell.revealed {
  background: var(--ms-cell-revealed);
  cursor: default;
}
.ms-cell.flagged { color: var(--ms-flag); }
.ms-cell.flagged:hover { background: var(--ms-cell-hidden-hover); }
.ms-cell.mine { color: var(--ms-mine); background: var(--ms-cell-revealed); }
.ms-cell.mine.exploded { background: #ffd6d6; }

.ms-cell.n1 { color: var(--n1); }
.ms-cell.n2 { color: var(--n2); }
.ms-cell.n3 { color: var(--n3); }
.ms-cell.n4 { color: var(--n4); }
.ms-cell.n5 { color: var(--n5); }
.ms-cell.n6 { color: var(--n6); }
.ms-cell.n7 { color: var(--n7); }
.ms-cell.n8 { color: var(--n8); }

/* Bigger cells on desktop when the board is smaller */
@media (min-width: 900px) {
  .ms-grid { --cell: clamp(24px, 2.8vw, 40px); }
}

@media (max-width: 899px) {
  .ms-page { padding: var(--space-md); }
  .page-header { margin-bottom: var(--space-md); }
  .ms-layout { gap: var(--space-md); }
  .panel-column { gap: var(--space-md); }
  .ad-slot { margin-top: var(--space-md); }
}

.pause-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.94);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--ms-blue);
  border-radius: 4px;
  z-index: 2;
}
.pause-overlay[hidden] { display: none; }
.pause-overlay p { margin: 0; font-size: 1.125rem; font-weight: 600; }

/* Panel */
.panel-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-width: 0;
}
.panel-head {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  align-items: center;
  gap: var(--space-md);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-right { align-items: flex-end; text-align: right; }
.stat-label {
  font-size: 0.75rem;
  color: var(--ms-muted);
}
.stat-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ms-text);
  font-variant-numeric: tabular-nums;
}

.icon-btn {
  position: relative;
  width: 52px; height: 52px;
  border-radius: 50%;
  border: none;
  background: var(--ms-blue-tint);
  color: var(--ms-blue);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 120ms, transform 80ms;
}
.icon-btn:hover { background: var(--ms-blue-hover); }
.icon-btn:active { transform: scale(0.96); }
.icon-btn.is-active { background: var(--ms-blue); color: #ffffff; }
.icon-btn.small { width: 32px; height: 32px; }
.icon-btn:focus-visible { outline: 2px solid var(--ms-blue); outline-offset: 2px; }

.action-row { display: flex; gap: var(--space-md); align-items: center; }
.action-row-two { gap: var(--space-md); }
.action-hint {
  color: var(--ms-muted);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.status {
  min-height: 1.25rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--ms-muted);
  margin: 0;
}

.new-game-btn {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: 12px;
  background: var(--ms-blue);
  color: #ffffff;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms, transform 80ms;
  font-family: inherit;
}
.new-game-btn:hover { background: var(--ms-blue-dark); }
.new-game-btn:active { transform: translateY(1px); }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(27, 37, 69, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: var(--space-md);
}
.modal[hidden] { display: none; }
.modal-card {
  background: #ffffff;
  border-radius: 16px;
  padding: var(--space-xl);
  max-width: 360px;
  width: 100%;
  text-align: center;
  box-shadow: 0 20px 40px rgba(27, 37, 69, 0.2);
}
.modal-card h2 { margin: 0 0 var(--space-xs); font-size: 1.75rem; }
.modal-card p { margin: 0 0 var(--space-md); color: var(--ms-muted); }
.modal-card .time {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ms-blue);
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-lg);
}

/* Ads (same style as Sudoku) */
.ad-label {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ms-muted);
  margin-bottom: var(--space-xs);
  text-align: center;
}
.ad-unit {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ms-blue-tint);
  color: var(--ms-blue);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px dashed var(--ms-border);
}
.ad-300x600 { width: 300px; height: 600px; }
.ad-728x90 { width: 100%; max-width: 728px; height: 90px; margin: 0 auto; }

.ad-slot {
  margin: var(--space-2xl) auto 0;
  padding: 0;
  max-width: 728px;
}

.game-footer {
  margin: var(--space-lg) auto 0;
  padding-top: var(--space-md);
  border-top: 1px solid var(--ms-border-thin);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--ms-muted);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  max-width: 728px;
}
.game-footer a { color: var(--ms-muted); text-decoration: none; }
.game-footer a:hover { color: var(--ms-text); text-decoration: underline; }

.side-ad { display: none; }

@media (min-width: 1500px) {
  .side-ad {
    display: block;
    width: 300px;
    z-index: 5;
    top: 120px;
    position: fixed;
  }
  .side-ad .ad-300x600 { width: 300px; height: 600px; }
  .side-ad-left { left: calc((100vw - 1100px) / 2 - 340px); }
  .side-ad-right { right: calc((100vw - 1100px) / 2 - 340px); }
}