:root {
  color-scheme: dark;
  --bg: #020712;
  --ink: #dff4ff;
  --muted: #8ab3d8;
  --panel: #06162e;
  --panel-2: #081e3c;
  --grid: #13365f;
  --cyan: #28c7ff;
  --cyan-soft: rgba(40, 199, 255, 0.36);
  --green: #52d84f;
  --orange: #ff8a1c;
  --yellow: #ffd21f;
  --purple: #b44cff;
  --red: #ed3155;
  --blue: #2b83ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    linear-gradient(rgba(10, 42, 82, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 42, 82, 0.16) 1px, transparent 1px),
    linear-gradient(145deg, #030716 0%, #061229 48%, #020711 100%);
  background-size:
    34px 34px,
    34px 34px,
    auto;
  color: var(--ink);
  font-family:
    Orbitron, "Exo 2", Raleway, Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button {
  appearance: none;
  display: grid;
  place-items: center;
  border: 1px solid var(--cyan);
  border-radius: 8px;
  background: rgba(8, 30, 60, 0.82);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  min-height: 44px;
  text-transform: uppercase;
  transition:
    background 150ms ease,
    border-color 150ms ease,
    box-shadow 150ms ease,
    transform 150ms ease;
}

button:hover {
  background: rgba(14, 52, 98, 0.9);
  box-shadow: 0 0 18px rgba(40, 199, 255, 0.3);
}

button:active {
  transform: translateY(1px);
}

button:focus-visible {
  outline: 3px solid rgba(40, 199, 255, 0.34);
  outline-offset: 3px;
}

.shell {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: clamp(12px, 3vw, 36px);
}

.game-phone {
  position: relative;
  display: grid;
  gap: 12px;
  width: min(100%, 430px, calc((100dvh - 24px) * 0.45));
  padding: 14px;
  border: 1px solid rgba(148, 222, 255, 0.48);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(10, 31, 64, 0.94), rgba(3, 11, 28, 0.96)),
    var(--panel);
  box-shadow:
    0 0 0 1px rgba(40, 199, 255, 0.12) inset,
    0 0 42px rgba(40, 199, 255, 0.14),
    0 22px 70px rgba(0, 0, 0, 0.45);
}

.top-bar {
  display: grid;
  grid-template-columns: 1fr 58px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 62px;
  padding: 10px;
  border: 1px solid var(--cyan);
  border-radius: 8px;
  background: rgba(2, 12, 31, 0.86);
  box-shadow: 0 0 22px rgba(40, 199, 255, 0.12) inset;
}

.score-block,
.mini-stat {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.score-block {
  align-content: center;
  min-height: 40px;
}

.score-block span,
.preview-panel span,
.mini-stat span {
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
}

.score-block strong,
.mini-stat strong {
  min-width: 0;
  color: #f7fbff;
  font-size: clamp(1.1rem, 5vw, 1.5rem);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  overflow-wrap: anywhere;
  text-shadow: 0 0 12px rgba(40, 199, 255, 0.35);
}

.align-right {
  justify-items: end;
  text-align: right;
}

.pause-button {
  width: 50px;
  height: 48px;
  min-height: 48px;
  color: #d8f6ff;
  font-size: 1.25rem;
  line-height: 1;
  box-shadow: 0 0 18px rgba(40, 199, 255, 0.16) inset;
}

.game-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 78px;
  gap: 10px;
  align-items: stretch;
}

.board-wrap {
  position: relative;
  aspect-ratio: 1 / 2;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--cyan);
  border-radius: 8px;
  background: #030b1b;
  box-shadow:
    0 0 0 1px rgba(76, 224, 255, 0.16) inset,
    0 0 24px rgba(40, 199, 255, 0.18);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(2, 7, 18, 0.66);
  backdrop-filter: blur(8px);
}

.overlay.is-visible {
  display: grid;
}

.start-card {
  display: grid;
  justify-items: center;
  gap: 14px;
}

.start-card p {
  margin: 0;
  color: var(--cyan);
  font-size: clamp(1rem, 6vw, 1.5rem);
  font-weight: 950;
  white-space: nowrap;
  text-transform: uppercase;
  text-shadow: 0 0 18px rgba(40, 199, 255, 0.65);
}

.primary-action {
  min-width: 138px;
  min-height: 48px;
  border-color: #20f5d2;
  background: #20dcb9;
  color: #03111c;
  box-shadow:
    0 0 18px rgba(32, 220, 185, 0.52),
    0 0 34px rgba(32, 220, 185, 0.22);
}

.primary-action:hover {
  background: #63f3d8;
}

.piece-rail {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 10px;
  min-width: 0;
}

.preview-panel {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 7px;
  min-width: 0;
  padding: 8px 7px;
  border: 1px solid rgba(40, 199, 255, 0.75);
  border-radius: 8px;
  background: rgba(4, 15, 35, 0.88);
  box-shadow: 0 0 16px rgba(40, 199, 255, 0.12) inset;
}

.next-panel {
  min-height: 198px;
}

.hold-panel {
  border-color: rgba(180, 76, 255, 0.88);
  box-shadow: 0 0 16px rgba(180, 76, 255, 0.14) inset;
}

.hold-panel span {
  color: #d78cff;
}

.preview-panel canvas {
  width: 100%;
  max-width: 70px;
}

.next-panel canvas {
  aspect-ratio: 1 / 2;
}

.hold-panel canvas {
  aspect-ratio: 90 / 78;
}

.hold-action {
  width: 34px;
  min-height: 28px;
  height: 28px;
  border-color: var(--purple);
  color: #efdcff;
  font-size: 0.75rem;
}

.control-pad {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--yellow);
  border-radius: 8px;
  background: rgba(2, 10, 26, 0.78);
}

.control-pad button {
  min-height: 56px;
  color: #f7fbff;
  font-size: clamp(1.35rem, 7vw, 2rem);
  line-height: 1;
  text-shadow: 0 0 10px rgba(40, 199, 255, 0.48);
}

.mini-strip {
  display: grid;
  grid-template-columns: minmax(64px, 0.8fr) 1fr 1fr 48px;
  gap: 9px;
  align-items: stretch;
}

.mini-strip button {
  min-height: 42px;
  padding-inline: 10px;
  color: #bdefff;
  font-size: 0.75rem;
}

.mini-stat {
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid rgba(40, 199, 255, 0.44);
  border-radius: 8px;
  background: rgba(4, 15, 35, 0.72);
}

.mini-stat span {
  color: var(--muted);
  font-size: 0.58rem;
}

.mini-stat strong {
  font-size: 0.95rem;
}

@media (max-width: 420px) {
  .shell {
    padding: 8px;
  }

  .game-phone {
    gap: 10px;
    padding: 10px;
  }

  .top-bar {
    grid-template-columns: 1fr 48px 1fr;
    min-height: 56px;
    padding: 8px;
  }

  .pause-button {
    width: 42px;
    height: 42px;
    min-height: 42px;
  }

  .game-stage {
    grid-template-columns: minmax(0, 1fr) 72px;
    gap: 8px;
  }

  .preview-panel {
    padding: 7px 6px;
  }

  .control-pad {
    gap: 8px;
    padding: 7px;
  }

  .control-pad button {
    min-height: 50px;
  }

  .mini-strip {
    grid-template-columns: minmax(58px, 0.7fr) 1fr 1fr 42px;
    gap: 7px;
  }

  .mini-strip button,
  .mini-stat {
    min-height: 38px;
  }
}