.tetris-page {
  --tetris-ink: #080a0b;
  --tetris-paper: #f4f6f6;
  --tetris-signal: #18d1ff;
  --tetris-state: #c8eb21;
  --tetris-rule: rgb(244 246 246 / 18%);
  --tetris-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(--tetris-ink);
  background-size: 5rem 5rem;
  color: var(--tetris-paper);
}

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

.tetris-page button:focus-visible,
.tetris-page a:focus-visible,
#tetris-board:focus-visible {
  outline: 2px solid var(--tetris-signal);
  outline-offset: 4px;
}

.tetris-topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--tetris-rule);
  background: rgb(8 10 11 / 91%);
  backdrop-filter: blur(.75rem);
}

.tetris-brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: inherit;
  text-decoration: none;
}

.tetris-brand strong,
.tetris-brand small {
  display: block;
}

.tetris-brand strong {
  font: 900 1.1rem/.9 var(--ark-display, "Arial Narrow", sans-serif);
  letter-spacing: -.025em;
}

.tetris-brand small {
  margin-top: .28rem;
  color: var(--tetris-muted);
  font: .56rem/1 var(--ark-mono, Consolas, monospace);
  letter-spacing: .14em;
}

.tetris-brand-mark {
  position: relative;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--tetris-signal);
  flex: 0 0 auto;
}

.tetris-brand-mark i {
  position: absolute;
  width: .52rem;
  height: .52rem;
  background: var(--tetris-signal);
}

.tetris-brand-mark i:nth-child(1) { inset: .23rem auto auto .23rem; }
.tetris-brand-mark i:nth-child(2) { inset: .23rem .23rem auto auto; }
.tetris-brand-mark i:nth-child(3) { inset: auto .23rem .23rem auto; }

.tetris-nav {
  display: flex;
  align-items: center;
  gap: clamp(.9rem, 3vw, 2rem);
  color: var(--tetris-muted);
  font: .68rem/1 var(--ark-mono, Consolas, monospace);
  letter-spacing: .08em;
}

.tetris-nav a {
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.tetris-nav a:hover { color: var(--tetris-signal); }

.tetris-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(--tetris-rule);
  background:
    linear-gradient(100deg, var(--tetris-ink) 0 43%, rgb(8 10 11 / 65%) 72%, var(--tetris-ink)),
    radial-gradient(circle at 78% 46%, rgb(24 209 255 / 28%), transparent 34%);
}

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

.tetris-intro::before {
  inset: 12% 7% 8% 46%;
  border: 1px solid rgb(24 209 255 / 35%);
  clip-path: polygon(0 0, 92% 0, 100% 13%, 100% 100%, 10% 100%, 0 87%);
  transform: rotate(-5deg);
}

.tetris-intro::after {
  width: min(30vw, 24rem);
  aspect-ratio: 1;
  inset: 17% 11% auto auto;
  background:
    linear-gradient(90deg, transparent 50%, rgb(244 246 246 / 8%) 50%),
    linear-gradient(transparent 50%, rgb(244 246 246 / 8%) 50%);
  background-size: 25% 25%;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 16%);
  transform: rotate(9deg);
}

.tetris-grid {
  position: absolute;
  z-index: -2;
  inset: 0;
  opacity: .7;
  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 70%, transparent);
}

.tetris-intro-copy {
  position: relative;
  z-index: 1;
  max-width: 54rem;
}

.tetris-kicker,
.tetris-panel-label {
  margin: 0 0 1rem;
  color: var(--tetris-muted);
  font: .65rem/1.2 var(--ark-mono, Consolas, monospace);
  letter-spacing: .14em;
}

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

.tetris-intro h1 {
  margin: 0;
  font-family: var(--ark-display, "Arial Narrow", sans-serif);
  font-size: clamp(3.8rem, 10vw, 9rem);
  font-weight: 900;
  line-height: .78;
  letter-spacing: -.065em;
}

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

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

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

.tetris-intro-actions {
  position: relative;
  z-index: 2;
  display: grid;
  gap: .7rem;
  min-width: 12rem;
}

.tetris-action {
  position: relative;
  min-height: 3.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 1rem .8rem 1.8rem;
  border: 1px solid rgb(244 246 246 / 45%);
  border-radius: 0;
  background: rgb(8 10 11 / 72%);
  color: var(--tetris-paper);
  cursor: pointer;
  font-weight: 800;
  text-align: left;
}

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

.tetris-action span {
  color: var(--tetris-muted);
  font: .65rem var(--ark-mono, Consolas, monospace);
}

.tetris-action:hover {
  border-color: var(--tetris-signal);
  transform: translateY(-2px);
}

.tetris-action-primary {
  border-color: var(--tetris-paper);
  background: var(--tetris-paper);
  color: var(--tetris-ink);
}

.tetris-console {
  position: relative;
  display: grid;
  grid-template-columns: minmax(10rem, 15rem) minmax(16rem, 24rem) minmax(10rem, 15rem);
  grid-template-areas: "metrics board queue";
  align-items: start;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(2rem, 5vw, 5rem) clamp(1rem, 5vw, 5rem);
  border-bottom: 1px solid var(--tetris-rule);
  background:
    linear-gradient(118deg, rgb(24 209 255 / 4%), transparent 28%),
    var(--tetris-ink);
}

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

.tetris-metrics {
  grid-area: metrics;
  border-block: 1px solid var(--tetris-rule);
  padding-block: 1.2rem;
}

.tetris-metrics dl { margin: 0; }

.tetris-metrics dl > div {
  padding: 1rem 0;
  border-top: 1px solid var(--tetris-rule);
}

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

.tetris-metrics dd {
  margin: .35rem 0 0;
  font: 900 clamp(2rem, 4vw, 3.5rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
  font-variant-numeric: tabular-nums;
}

.tetris-run-state {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .35rem .55rem;
  align-items: center;
  padding: 1rem 0 0;
  border-top: 1px solid var(--tetris-rule);
  color: var(--tetris-muted);
  font: .62rem/1.2 var(--ark-mono, Consolas, monospace);
}

.tetris-run-state strong {
  grid-column: 2;
  color: var(--tetris-paper);
  font-size: .78rem;
}

.tetris-state-light {
  grid-row: 1 / 3;
  width: .55rem;
  height: 1.9rem;
  background: var(--tetris-state);
  box-shadow: 0 0 1rem rgb(200 235 33 / 25%);
}

.tetris-page[data-game-state="paused"] .tetris-state-light {
  background: var(--tetris-signal);
}

.tetris-page[data-game-state="over"] .tetris-state-light {
  background: #ff5d63;
}

.tetris-board-stage {
  grid-area: board;
  width: 100%;
  margin: 0;
}

.tetris-board-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 2;
  padding: clamp(.38rem, 1vw, .65rem);
  border: 1px solid rgb(244 246 246 / 52%);
  background: #030405;
  box-shadow:
    .85rem .85rem 0 rgb(24 209 255 / 22%),
    inset 0 0 0 1px rgb(24 209 255 / 10%);
}

#tetris-board {
  display: block;
  width: 100%;
  height: 100%;
  background: #050708;
  touch-action: none;
}

.tetris-board-stage figcaption {
  margin-top: 1.45rem;
  color: var(--tetris-muted);
  font: .58rem/1.4 var(--ark-mono, Consolas, monospace);
  letter-spacing: .06em;
  text-align: center;
}

.tetris-overlay {
  position: absolute;
  inset: 35% .65rem auto;
  z-index: 4;
  display: grid;
  gap: .35rem;
  padding: 1.15rem;
  border-block: 1px solid var(--tetris-signal);
  background: rgb(8 10 11 / 92%);
  color: var(--tetris-paper);
  pointer-events: none;
  text-align: center;
  backdrop-filter: blur(.4rem);
}

.tetris-overlay[hidden] { display: none; }

.tetris-overlay p,
.tetris-overlay span {
  margin: 0;
  color: var(--tetris-muted);
  font: .58rem/1.4 var(--ark-mono, Consolas, monospace);
  letter-spacing: .1em;
}

.tetris-overlay strong {
  font: 900 clamp(2.1rem, 6vw, 4rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
  letter-spacing: -.04em;
}

.tetris-corner {
  position: absolute;
  width: 1.4rem;
  height: 1.4rem;
  border-color: var(--tetris-signal);
  pointer-events: none;
}

.tetris-corner-a {
  inset: -.35rem auto auto -.35rem;
  border-top: 2px solid var(--tetris-signal);
  border-left: 2px solid var(--tetris-signal);
}

.tetris-corner-b {
  inset: auto -.35rem -.35rem auto;
  border-right: 2px solid var(--tetris-signal);
  border-bottom: 2px solid var(--tetris-signal);
}

.tetris-piece-queue {
  grid-area: queue;
  display: grid;
  gap: 1.1rem;
}

.tetris-piece-queue section {
  border: 1px solid var(--tetris-rule);
  background: rgb(255 255 255 / 2%);
}

.tetris-piece-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
  padding: .8rem;
  border-bottom: 1px solid var(--tetris-rule);
}

.tetris-piece-heading p {
  margin: 0;
  font-weight: 800;
}

.tetris-piece-heading span {
  color: var(--tetris-muted);
  font: .55rem var(--ark-mono, Consolas, monospace);
  letter-spacing: .08em;
}

.tetris-piece-queue canvas {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 7;
  background: #050708;
}

.tetris-hold-state {
  margin: 0;
  padding: .75rem;
  border-left: .3rem solid var(--tetris-state);
  background: rgb(255 255 255 / 4%);
  color: var(--tetris-muted);
  font: .6rem/1.5 var(--ark-mono, Consolas, monospace);
}

.tetris-hold-state.is-locked { border-color: var(--tetris-muted); }

.tetris-touch {
  display: grid;
  grid-template-columns: minmax(12rem, 20rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start;
  padding: clamp(2.5rem, 6vw, 5.5rem) clamp(1rem, 6vw, 6.5rem);
  border-bottom: 1px solid var(--tetris-rule);
  background: rgb(244 246 246 / 3%);
}

.tetris-touch h2,
.tetris-help h2 {
  margin: 0;
  font: 900 clamp(2rem, 5vw, 4rem)/.9 var(--ark-display, "Arial Narrow", sans-serif);
  letter-spacing: -.045em;
}

.tetris-touch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(4rem, 1fr));
  gap: .55rem;
}

.tetris-touch-grid button {
  min-height: 4.7rem;
  display: grid;
  place-items: center;
  gap: .2rem;
  padding: .5rem;
  border: 1px solid rgb(244 246 246 / 35%);
  border-radius: 0;
  background: var(--tetris-ink);
  color: var(--tetris-paper);
  cursor: pointer;
  touch-action: none;
  user-select: none;
}

.tetris-touch-grid button:hover,
.tetris-touch-grid button:active {
  border-color: var(--tetris-signal);
  background: rgb(24 209 255 / 10%);
}

.tetris-touch-grid button.is-signal {
  border-color: var(--tetris-signal);
  background: var(--tetris-signal);
  color: var(--tetris-ink);
}

.tetris-touch-grid b {
  font: 900 1.5rem/1 var(--ark-display, "Arial Narrow", sans-serif);
}

.tetris-touch-grid span {
  font: .58rem/1 var(--ark-mono, Consolas, monospace);
}

.tetris-help {
  display: grid;
  grid-template-columns: minmax(12rem, 20rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  padding: clamp(2.5rem, 6vw, 5.5rem) clamp(1rem, 6vw, 6.5rem);
  background: var(--tetris-paper);
  color: var(--tetris-ink);
}

.tetris-help .tetris-panel-label { color: rgb(8 10 11 / 62%); }

.tetris-help dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid rgb(8 10 11 / 22%);
}

.tetris-help dl > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid rgb(8 10 11 / 22%);
}

.tetris-help dl > div:nth-child(odd) { padding-right: 1rem; }
.tetris-help dl > div:nth-child(even) { padding-left: 1rem; border-left: 1px solid rgb(8 10 11 / 22%); }

.tetris-help dt { font-weight: 700; }

.tetris-help dd {
  margin: 0;
  font: .67rem/1.5 var(--ark-mono, Consolas, monospace);
}

.tetris-help > p {
  grid-column: 2;
  max-width: 48rem;
  margin: 0;
  color: rgb(8 10 11 / 68%);
  line-height: 1.7;
}

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

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

.tetris-visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.tetris-noscript {
  margin: 0;
  padding: 1rem;
  border-left: .4rem solid #ff5d63;
  background: var(--tetris-paper);
  color: var(--tetris-ink);
}

@media (max-width: 980px) {
  .tetris-console {
    grid-template-columns: minmax(9rem, 1fr) minmax(15rem, 23rem);
    grid-template-areas:
      "board board"
      "metrics queue";
  }

  .tetris-board-stage {
    width: min(100%, 23rem);
    justify-self: center;
  }

  .tetris-metrics,
  .tetris-piece-queue { margin-top: 1rem; }
}

@media (max-width: 700px) {
  .tetris-topbar { min-height: 3.8rem; padding-inline: .8rem; }
  .tetris-brand small { display: none; }
  .tetris-brand-mark { width: 1.7rem; height: 1.7rem; }
  .tetris-nav { gap: .8rem; font-size: .61rem; }
  .tetris-nav a:last-child { display: none; }

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

  .tetris-intro::before { inset: 18% -20% 24% 36%; }
  .tetris-intro::after { width: 13rem; opacity: .5; }
  .tetris-intro h1 { font-size: clamp(3.6rem, 19vw, 6rem); }
  .tetris-intro-actions { grid-template-columns: 1fr 1fr; min-width: 0; }
  .tetris-action { min-height: 3rem; padding-inline: 1.6rem .7rem; font-size: .78rem; }

  .tetris-console {
    grid-template-columns: minmax(0, 1fr) minmax(8rem, 10rem);
    grid-template-areas:
      "board board"
      "metrics queue";
    padding: 2.6rem .85rem;
    gap: .8rem;
  }

  .tetris-console::before { inset-inline: .85rem; }
  .tetris-board-stage { width: min(88vw, 22rem); }
  .tetris-board-frame { box-shadow: .5rem .5rem 0 rgb(24 209 255 / 22%); }
  .tetris-metrics dd { font-size: clamp(1.65rem, 8vw, 2.5rem); }
  .tetris-metrics dl > div { padding: .72rem 0; }
  .tetris-piece-heading { display: block; padding: .65rem; }
  .tetris-piece-heading span { display: block; margin-top: .2rem; }
  .tetris-hold-state { padding: .55rem; }

  .tetris-touch,
  .tetris-help {
    grid-template-columns: 1fr;
    padding: 2.8rem 1rem;
  }

  .tetris-touch-grid { grid-template-columns: repeat(4, minmax(3.3rem, 1fr)); }
  .tetris-touch-grid button { min-height: 4.3rem; }
  .tetris-help dl { grid-template-columns: 1fr; }
  .tetris-help dl > div:nth-child(odd),
  .tetris-help dl > div:nth-child(even) { padding-inline: 0; border-left: 0; }
  .tetris-help > p { grid-column: 1; }
  .tetris-footer { flex-direction: column; }
}

@media (max-width: 390px) {
  .tetris-intro-actions { grid-template-columns: 1fr; }
  .tetris-touch-grid span { font-size: .52rem; }
  .tetris-touch-grid b { font-size: 1.25rem; }
}

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