:root {
  --t0: rgba(249, 252, 252, 0.62);
  --t1: #477c91;
  --t2: #82afba;
  --t3: #c3a475;
  --t4: #719c83;
  --t5: #8b83b4;
  --t6: #b87978;
  --t7: #506f9b;
}
.tetris-shell {
  max-width: 610px;
  margin: auto;
  padding: 26px 42px 44px;
}
.tetris-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.tetris-intro h1 {
  margin: 0;
  font: 600 clamp(2.2rem, 5vw, 3.6rem)/1 var(--serif);
  letter-spacing: -0.05em;
}
.tetris-intro p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.record-card,
.score-card,
.level-card {
  min-width: 104px;
  padding: 8px 11px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-align: right;
}
.record-card span,
.score-card span,
.level-card span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.09em;
}
.record-card b,
.score-card b,
.level-card b {
  display: block;
  margin: 1px 0;
  color: var(--ink);
  font: 600 1.55rem/1.1 var(--serif);
}
.record-card small {
  display: block;
  min-height: 1.3em;
  color: var(--accent);
  font-size: 11px;
}
.tetris-layout {
  display: grid;
  grid-template-columns: 330px 150px;
  gap: 20px;
  align-items: start;
  width: max-content;
  margin: auto;
  padding-top: 18px;
}
.tetris-panel {
  width: 330px;
}
.game-toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 9px;
}
.score-card,
.level-card {
  min-width: 0;
  padding: 7px 10px;
  text-align: left;
}
.score-card b,
.level-card b {
  font-size: 1.28rem;
}
button {
  cursor: pointer;
  border: 1px solid var(--accent);
  padding: 9px 12px;
  background: var(--accent);
  color: var(--on-accent);
  font: 600 13px var(--sans);
  letter-spacing: 0.04em;
}
button:hover {
  background: var(--accent);
}
button:focus-visible,
.tetris-board:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--line);
}
.ghost:hover {
  background: var(--panel);
  color: var(--ink);
}
.tetris-board {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 2px;
  width: auto;
  height: min(58vh, 500px);
  margin: auto;
  padding: 5px;
  aspect-ratio: 1/2;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 45%, transparent);
  touch-action: none;
}
.cell {
  background: var(--t0);
  border: 1px solid color-mix(in srgb, var(--accent) 8%, transparent);
}
.cell[data-color='1'] {
  background: var(--t1);
}
.cell[data-color='2'] {
  background: var(--t2);
}
.cell[data-color='3'] {
  background: var(--t3);
}
.cell[data-color='4'] {
  background: var(--t4);
}
.cell[data-color='5'] {
  background: var(--t5);
}
.cell[data-color='6'] {
  background: var(--t6);
}
.cell[data-color='7'] {
  background: var(--t7);
}
.next-panel {
  padding: 11px;
  border-left: 2px solid var(--line);
  color: var(--muted);
}
.next-panel p {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.next-piece {
  display: grid;
  grid-template-columns: repeat(4, 18px);
  grid-template-rows: repeat(4, 18px);
  gap: 2px;
}
.next-cell {
  background: transparent;
}
.next-cell.on {
  background: var(--t1);
}
.touch-controls {
  display: grid;
  grid-template-columns: repeat(3, 32px);
  gap: 4px;
  margin-top: 16px;
}
.touch-controls button {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border-color: var(--line);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  color: var(--accent);
  font: 600 17px/1 var(--sans);
}
.touch-controls button:hover {
  border-color: var(--accent);
  background: var(--panel);
}
.record-dialog {
  width: min(420px, calc(100% - 36px));
  padding: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 16px 42px color-mix(in srgb, var(--ink) 18%, transparent);
}
.record-dialog::backdrop {
  background: color-mix(in srgb, var(--ink) 35%, transparent);
}
.record-dialog form {
  padding: 29px;
}
.record-dialog h2 {
  margin: 0;
  font: 600 2rem/1.2 var(--serif);
}
.record-dialog p:not(.eyebrow):not(.record-error) {
  color: var(--muted);
  font-size: 14px;
}
.record-dialog label {
  display: block;
  margin-top: 21px;
  color: var(--muted);
  font-size: 13px;
}
.record-dialog input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 11px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font: 16px var(--sans);
}
.record-error {
  min-height: 1.4em;
  margin: 8px 0 0;
  color: var(--danger);
  font-size: 12px;
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  margin-top: 16px;
}
@media (max-width: 800px) {
  .tetris-shell {
    padding: 22px 20px 35px;
  }
  .tetris-layout {
    grid-template-columns: 300px 130px;
    gap: 14px;
  }
  .tetris-panel {
    width: 300px;
  }
  .next-panel {
    padding: 10px;
  }
  .next-piece {
    grid-template-columns: repeat(4, 15px);
    grid-template-rows: repeat(4, 15px);
  }
  .touch-controls {
    grid-template-columns: repeat(3, 30px);
    gap: 3px;
  }
  .touch-controls button {
    width: 30px;
    height: 30px;
  }
  .record-dialog form {
    padding: 24px;
  }
}
@media (max-width: 540px) {
  .tetris-intro {
    align-items: start;
    flex-direction: column;
  }
  .record-card {
    text-align: left;
  }
  .tetris-layout {
    grid-template-columns: 1fr;
    width: 100%;
  }
  .tetris-panel {
    display: grid;
    width: 100%;
    justify-items: center;
  }
  .game-toolbar {
    width: 100%;
    max-width: 300px;
  }
  .next-panel {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 8px 18px;
    width: 100%;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
  .next-panel p {
    margin: 0;
  }
  .next-piece {
    grid-column: 1;
  }
  .touch-controls {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: end;
    margin: 0;
  }
  .tetris-board {
    height: min(54vh, 460px);
  }
}
@media (max-width: 540px) {
  .next-panel {
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: auto auto;
    gap: 8px;
  }
  .next-panel p {
    grid-column: 1;
    grid-row: 1;
  }
  .next-piece {
    grid-column: 1;
    grid-row: 2;
  }
  .touch-controls {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: center;
    margin: 0;
  }
}
.game-toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas: 'score start' 'speed speed';
  width: 260px;
  margin: 0 auto 9px;
}
.game-toolbar .score-card {
  grid-area: score;
  display: flex;
  align-items: baseline;
  gap: 7px;
  min-width: 0;
  padding: 7px 9px;
}
.game-toolbar .score-card span {
  font-size: 10px;
}
.game-toolbar .score-card b {
  font-size: 1.35rem;
}
.game-toolbar .level-card {
  grid-area: speed;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 5px;
  padding: 4px 0;
  border: 0;
  background: transparent;
  text-align: center;
}
.game-toolbar .level-card span {
  font-size: 10px;
}
.game-toolbar .level-card b {
  font-size: 1rem;
  color: var(--accent);
}
.game-toolbar #new-game {
  grid-area: start;
  align-self: stretch;
  padding: 7px 11px;
}
.touch-control-group {
  margin-top: 16px;
  text-align: center;
}
.touch-controls {
  grid-template-columns: repeat(3, 46px);
  gap: 5px;
  margin: 0;
}
.touch-controls button {
  width: 46px;
  height: 46px;
  font-size: 23px;
}
.touch-hint {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
}
@media (max-width: 800px) {
  .touch-controls {
    grid-template-columns: repeat(3, 44px);
    gap: 4px;
  }
  .touch-controls button {
    width: 44px;
    height: 44px;
  }
}
@media (max-width: 540px) {
  .touch-control-group {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: center;
    margin: 0;
  }
  .touch-controls {
    grid-template-columns: repeat(3, 46px);
    gap: 5px;
  }
  .touch-controls button {
    width: 46px;
    height: 46px;
  }
}