.mine-page {
  --mine-ink: #080a0b;
  --mine-paper: #f4f6f6;
  --mine-signal: #18d1ff;
  --mine-state: #c8eb21;
  --mine-danger: #ff5d63;
  --mine-rule: rgb(244 246 246 / 18%);
  --mine-muted: rgb(244 246 246 / 62%);
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  background:
    linear-gradient(90deg, rgb(24 209 255 / 4%) 1px, transparent 1px),
    linear-gradient(rgb(255 255 255 / 3%) 1px, transparent 1px),
    var(--mine-ink);
  background-size: 5rem 5rem;
  color: var(--mine-paper);
}

.mine-page button,
.mine-page a { -webkit-tap-highlight-color: transparent; }

.mine-page :is(button, a):focus-visible {
  outline: 2px solid var(--mine-signal);
  outline-offset: 3px;
}

.mine-topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 30;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .65rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--mine-rule);
  background: rgb(8 10 11 / 91%);
  backdrop-filter: blur(.75rem);
}

.mine-back {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: inherit;
  text-decoration: none;
}

.mine-back > span:first-child {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--mine-signal);
  color: var(--mine-signal);
}

.mine-back strong,
.mine-back small { display: block; }

.mine-back strong {
  font: 900 1rem/.95 var(--ark-display, "Arial Narrow", sans-serif);
}

.mine-back small {
  margin-top: .28rem;
  color: var(--mine-muted);
  font: .55rem/1 var(--ark-mono, Consolas, monospace);
  letter-spacing: .13em;
}

.mine-topbar > p {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0;
  color: var(--mine-muted);
  font: .6rem/1.2 var(--ark-mono, Consolas, monospace);
  letter-spacing: .09em;
}

.mine-topbar > p span {
  width: .48rem;
  height: .48rem;
  background: var(--mine-state);
  box-shadow: 0 0 0 .3rem rgb(200 235 33 / 12%);
}

.mine-intro {
  position: relative;
  isolation: isolate;
  min-height: 25rem;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 2rem;
  padding: clamp(3.5rem, 8vw, 7rem) clamp(1rem, 6vw, 6.5rem) clamp(2.5rem, 6vw, 5rem);
  border-bottom: 1px solid var(--mine-rule);
  background:
    linear-gradient(98deg, var(--mine-ink) 0 48%, rgb(8 10 11 / 62%) 74%, var(--mine-ink)),
    radial-gradient(circle at 78% 48%, rgb(24 209 255 / 24%), transparent 32%);
}

.mine-intro::before,
.mine-intro::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.mine-intro::before {
  width: min(30vw, 25rem);
  aspect-ratio: 1;
  inset: 15% 10% auto auto;
  border: 1px solid rgb(24 209 255 / 38%);
  box-shadow:
    inset 0 0 0 2.4rem rgb(8 10 11 / 70%),
    inset 0 0 0 2.45rem rgb(244 246 246 / 15%);
  transform: rotate(11deg);
}

.mine-intro::after {
  width: .7rem;
  height: 48%;
  inset: 20% 21% auto auto;
  background: var(--mine-signal);
  transform: rotate(11deg);
}

.mine-intro-grid {
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: .72;
  background-image:
    linear-gradient(rgb(24 209 255 / 10%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 7%) 1px, transparent 1px);
  background-size: clamp(3rem, 6vw, 6rem) clamp(3rem, 6vw, 6rem);
  mask-image: linear-gradient(90deg, #000, #000 72%, transparent);
}

.mine-intro > div:not(.mine-intro-grid) {
  position: relative;
  z-index: 1;
  max-width: 54rem;
}

.mine-kicker,
.mine-panel-label,
.mine-controls legend {
  margin: 0 0 1rem;
  color: var(--mine-muted);
  font: .64rem/1.2 var(--ark-mono, Consolas, monospace);
  letter-spacing: .13em;
}

.mine-kicker::before,
.mine-panel-label::before,
.mine-controls legend::before {
  display: inline-block;
  width: 1.75rem;
  height: .34rem;
  margin-inline-end: .6rem;
  background: var(--mine-signal);
  content: "";
  vertical-align: .04rem;
}

.mine-intro h1 {
  margin: 0;
  font: 900 clamp(3.9rem, 10vw, 9rem)/.78 var(--ark-display, "Arial Narrow", sans-serif);
  letter-spacing: -.065em;
}

.mine-intro h1 span,
.mine-intro h1 em { display: block; }

.mine-intro h1 em {
  color: transparent;
  font-style: normal;
  -webkit-text-stroke: 1px var(--mine-signal);
}

.mine-intro > div > p:last-child {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: rgb(244 246 246 / 76%);
  line-height: 1.7;
}

.mine-reset {
  position: relative;
  z-index: 2;
  min-width: 12rem;
  min-height: 3.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 1rem .8rem 1.8rem;
  border: 1px solid var(--mine-paper);
  border-radius: 0;
  background: var(--mine-paper);
  color: var(--mine-ink);
  cursor: pointer;
  font-weight: 800;
}

.mine-reset::before {
  position: absolute;
  inset: 22% auto 22% .65rem;
  width: .3rem;
  background: var(--mine-signal);
  content: "";
}

.mine-reset span {
  color: rgb(8 10 11 / 58%);
  font: .65rem var(--ark-mono, Consolas, monospace);
}

.mine-reset:hover { transform: translateY(-2px); }

.mine-console {
  position: relative;
  display: grid;
  grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr) minmax(14rem, 18rem);
  align-items: start;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(2rem, 5vw, 5rem) clamp(1rem, 5vw, 5rem);
  border-bottom: 1px solid var(--mine-rule);
}

.mine-console::before {
  position: absolute;
  inset: 1.25rem clamp(1rem, 5vw, 5rem) auto;
  height: 1px;
  background: linear-gradient(90deg, var(--mine-signal) 0 12%, var(--mine-rule) 12%);
  content: "";
}

.mine-controls fieldset {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0 0 1.3rem;
  border: 0;
  border-bottom: 1px solid var(--mine-rule);
}

.mine-controls legend { float: left; width: 100%; }
.mine-controls legend + * { clear: both; }

.mine-controls [data-level] {
  min-height: 3.4rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: .6rem;
  padding: .65rem .75rem;
  border: 1px solid var(--mine-rule);
  border-radius: 0;
  background: rgb(255 255 255 / 2%);
  color: var(--mine-paper);
  cursor: pointer;
  text-align: left;
}

.mine-controls [data-level] span {
  color: var(--mine-muted);
  font: .56rem/1.25 var(--ark-mono, Consolas, monospace);
}

.mine-controls [data-level][aria-pressed="true"] {
  border-color: var(--mine-signal);
  background: var(--mine-signal);
  color: var(--mine-ink);
}

.mine-controls [data-level][aria-pressed="true"] span { color: rgb(8 10 11 / 66%); }

.mine-metrics { margin: 1.2rem 0 0; }

.mine-metrics > div {
  padding: .9rem 0;
  border-bottom: 1px solid var(--mine-rule);
}

.mine-metrics dt {
  color: var(--mine-muted);
  font: .58rem/1.2 var(--ark-mono, Consolas, monospace);
  letter-spacing: .08em;
}

.mine-metrics dd {
  margin: .38rem 0 0;
  font: 900 clamp(1.9rem, 4vw, 3.2rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
  font-variant-numeric: tabular-nums;
}

.mine-metrics dd small {
  margin-inline-start: .35rem;
  color: var(--mine-muted);
  font: .55rem var(--ark-mono, Consolas, monospace);
}

.mine-metrics .mine-state-text {
  color: var(--mine-state);
  font-size: 1.2rem;
}

.mine-page[data-game-state="lost"] .mine-state-text { color: var(--mine-danger); }
.mine-page[data-game-state="won"] .mine-state-text { color: var(--mine-state); }

.mine-stage { min-width: 0; }

.mine-stage > header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: .85rem;
  border-bottom: 1px solid var(--mine-rule);
}

.mine-stage > header p {
  margin: 0;
  color: var(--mine-muted);
  font: .58rem var(--ark-mono, Consolas, monospace);
  letter-spacing: .08em;
}

.mine-stage > header h2 {
  margin: 0;
  font: 900 clamp(1.8rem, 4vw, 3rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
}

.mine-board-scroll {
  max-width: 100%;
  overflow: auto;
  padding: 1rem 1rem 1.35rem;
  border-inline: 1px solid var(--mine-rule);
  background: #030405;
  scrollbar-color: var(--mine-signal) rgb(255 255 255 / 8%);
}

.mine-board {
  --cols: 9;
  --cell: clamp(1.9rem, 2.4vw, 2.2rem);
  width: max-content;
  display: grid;
  grid-template-columns: repeat(var(--cols), var(--cell));
  gap: 1px;
  margin-inline: auto;
  padding: 1px;
  border: 1px solid rgb(244 246 246 / 42%);
  background: rgb(24 209 255 / 21%);
  box-shadow: .65rem .65rem 0 rgb(24 209 255 / 14%);
}

.mine-board[data-level="intermediate"] { --cols: 16; }
.mine-board[data-level="expert"] { --cols: 30; }

.mine-cell {
  position: relative;
  width: var(--cell);
  height: var(--cell);
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-top: 1px solid rgb(244 246 246 / 23%);
  border-left: 1px solid rgb(244 246 246 / 23%);
  border-radius: 0;
  background: #1a1e20;
  color: var(--mine-paper);
  cursor: pointer;
  touch-action: pan-x pan-y;
  user-select: none;
  font: 900 clamp(.72rem, 1.8vw, 1rem)/1 var(--ark-mono, Consolas, monospace);
}

.mine-cell:hover:not(.is-revealed) { background: rgb(24 209 255 / 18%); }

.mine-cell:focus-visible {
  z-index: 3;
  outline: 2px solid var(--mine-state);
  outline-offset: -2px;
}

.mine-cell.is-revealed {
  border-color: transparent;
  background: #090c0d;
  cursor: default;
}

.mine-cell.is-flagged {
  background: rgb(24 209 255 / 13%);
  color: var(--mine-signal);
}

.mine-cell.is-mine { color: var(--mine-danger); }
.mine-cell.is-detonated { background: var(--mine-danger); color: var(--mine-ink); }
.mine-cell.is-wrong { color: var(--mine-danger); text-decoration: line-through; }
.mine-cell[data-count="1"] { color: var(--mine-signal); }
.mine-cell[data-count="2"] { color: var(--mine-state); }
.mine-cell[data-count="3"] { color: #ffc861; }
.mine-cell[data-count="4"],
.mine-cell[data-count="5"],
.mine-cell[data-count="6"],
.mine-cell[data-count="7"],
.mine-cell[data-count="8"] { color: rgb(244 246 246 / 88%); }

.mine-live {
  min-height: 2.6rem;
  margin: 1rem 0 0;
  padding: .7rem .85rem;
  border-left: .3rem solid var(--mine-signal);
  background: rgb(255 255 255 / 4%);
  color: var(--mine-muted);
  font: .62rem/1.55 var(--ark-mono, Consolas, monospace);
}

.mine-help {
  padding: 1.1rem;
  border-block: 1px solid var(--mine-rule);
  background: rgb(255 255 255 / 2%);
}

.mine-help h2 {
  margin: 0 0 1.4rem;
  font: 900 clamp(1.9rem, 4vw, 3rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
  letter-spacing: -.04em;
}

.mine-help dl { margin: 0; }

.mine-help dl > div {
  display: grid;
  gap: .3rem;
  padding: .75rem 0;
  border-top: 1px solid var(--mine-rule);
}

.mine-help dt { font-weight: 800; }
.mine-help dd { margin: 0; color: var(--mine-muted); font: .61rem/1.4 var(--ark-mono, Consolas, monospace); }
.mine-help > p:last-child { margin: 1.25rem 0 0; color: var(--mine-muted); line-height: 1.65; }

.mine-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem clamp(1rem, 6vw, 6.5rem);
  color: var(--mine-muted);
  font: .58rem/1.4 var(--ark-mono, Consolas, monospace);
  letter-spacing: .08em;
}

.mine-footer p { margin: 0; }
.mine-footer a { color: var(--mine-paper); text-decoration: none; }
.mine-footer a:hover { color: var(--mine-signal); }

.mine-noscript {
  margin: 0;
  padding: 1rem;
  border-left: .4rem solid var(--mine-danger);
  background: var(--mine-paper);
  color: var(--mine-ink);
}

@media (max-width: 1100px) {
  .mine-console {
    grid-template-columns: minmax(11rem, 15rem) minmax(0, 1fr);
    grid-template-areas:
      "stage stage"
      "controls help";
  }

  .mine-stage { grid-area: stage; }
  .mine-controls { grid-area: controls; }
  .mine-help { grid-area: help; }
}

@media (max-width: 700px) {
  .mine-topbar { min-height: 3.8rem; padding-inline: .8rem; }
  .mine-back small,
  .mine-topbar > p { display: none; }

  .mine-intro {
    min-height: auto;
    grid-template-columns: 1fr;
    padding: 4.5rem 1rem 2rem;
  }

  .mine-intro::before { width: 13rem; inset: 20% -8% auto auto; opacity: .55; }
  .mine-intro::after { right: 10%; }
  .mine-intro h1 { font-size: clamp(3.7rem, 19vw, 6.2rem); }
  .mine-reset { width: min(100%, 18rem); }

  .mine-console {
    grid-template-columns: 1fr;
    grid-template-areas: "stage" "controls" "help";
    padding: 2.7rem .85rem;
  }

  .mine-console::before { inset-inline: .85rem; }
  .mine-stage > header { align-items: start; }
  .mine-board-scroll { padding-inline: .7rem; }
  .mine-board { margin-inline: 0; box-shadow: .4rem .4rem 0 rgb(24 209 255 / 14%); }
  .mine-controls [data-level] { min-height: 3.7rem; }
  .mine-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .mine-page *,
  .mine-page *::before,
  .mine-page *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}