:root {
  color-scheme: light;
  --ink: #18161f;
  --muted: #615f6b;
  --paper: #f7f4ee;
  --surface: #fffdf8;
  --line: #24202b;
  --teal: #17a892;
  --coral: #f06449;
  --gold: #f7c948;
  --violet: #6d5dfc;
  --green: #7fb069;
  --shadow: 0 14px 34px rgba(24, 22, 31, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background:
    linear-gradient(90deg, rgba(23, 168, 146, 0.1) 1px, transparent 1px),
    linear-gradient(rgba(240, 100, 73, 0.08) 1px, transparent 1px),
    var(--paper);
  background-size: 38px 38px;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  min-height: 42px;
  border: 2px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 4px 0 var(--line);
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 5px 0 var(--line);
}

button:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: 0 1px 0 var(--line);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

input {
  min-height: 42px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 0 10px;
  background: var(--surface);
  color: var(--ink);
}

.shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 32px;
}

.hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 4.1rem;
  line-height: 0.95;
}

.date-tools {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: 8px;
  flex-wrap: wrap;
}

.date-tools label {
  font-weight: 800;
}

.small-button {
  min-height: 42px;
  padding: 0 12px;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 18px;
  align-items: start;
}

.play-surface,
.command-panel {
  border: 2px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.92);
  box-shadow: var(--shadow);
}

.play-surface {
  padding: 16px;
}

.command-panel {
  padding: 16px;
  position: sticky;
  top: 16px;
}

.hud {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 14px;
}

.hud div {
  min-height: 58px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: var(--surface);
}

.hud span,
.panel-title span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hud strong,
.panel-title strong {
  display: block;
  overflow-wrap: anywhere;
  line-height: 1.2;
}

.board {
  display: grid;
  grid-template-columns: repeat(var(--board-size), 1fr);
  width: min(100%, 560px);
  aspect-ratio: 1;
  margin: 0 auto;
  border: 3px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--line);
  gap: 2px;
}

.cell {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  background: #fff9e9;
  overflow: hidden;
}

.cell:nth-child(3n) {
  background: #f0fbf8;
}

.cell:nth-child(4n) {
  background: #fff2ee;
}

.cell.trail::before {
  content: "";
  position: absolute;
  inset: 20%;
  border-radius: 4px;
  background: rgba(109, 93, 252, 0.18);
}

.block-core {
  width: 56%;
  aspect-ratio: 1;
  border: 2px solid var(--line);
  border-radius: 4px;
  background:
    linear-gradient(45deg, transparent 42%, var(--line) 43%, var(--line) 57%, transparent 58%),
    var(--coral);
}

.spark {
  position: absolute;
  width: 34%;
  aspect-ratio: 1;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--gold);
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.55);
}

.spark-collected {
  background: var(--green);
  transform: scale(0.76);
}

.dock-ring {
  width: 66%;
  aspect-ratio: 1;
  border: 4px solid var(--teal);
  border-radius: 50%;
  background: radial-gradient(circle, transparent 45%, rgba(23, 168, 146, 0.18) 46%);
}

.start-pad {
  width: 62%;
  height: 26%;
  border: 2px solid var(--line);
  border-radius: 4px;
  background: var(--violet);
  transform: rotate(-12deg);
}

.shuttle {
  position: relative;
  z-index: 2;
  width: 44%;
  aspect-ratio: 1.4;
  border: 2px solid var(--line);
  border-radius: 6px 6px 10px 10px;
  background:
    linear-gradient(90deg, transparent 0 28%, rgba(255, 255, 255, 0.75) 29% 54%, transparent 55%),
    var(--teal);
  transform: rotate(45deg);
}

.crash-mark {
  position: absolute;
  z-index: 3;
  width: 64%;
  height: 64%;
  border: 4px solid var(--coral);
  border-radius: 50%;
}

.crash-mark::before,
.crash-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 8%;
  width: 4px;
  height: 84%;
  background: var(--coral);
}

.crash-mark::before {
  transform: translateX(-50%) rotate(45deg);
}

.crash-mark::after {
  transform: translateX(-50%) rotate(-45deg);
}

.status-line {
  min-height: 28px;
  margin: 12px 0 0;
  color: var(--muted);
  font-weight: 750;
}

.panel-title {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.dir-pad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-areas:
    ". north ."
    "west . east"
    ". south .";
  gap: 8px;
  margin-bottom: 14px;
}

.dir-button {
  display: grid;
  place-items: center;
  min-height: 58px;
  background: #f7f3ff;
}

.dir-button .icon,
.command-chip .icon {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.north {
  grid-area: north;
}

.east {
  grid-area: east;
}

.east .icon {
  transform: rotate(90deg);
}

.south {
  grid-area: south;
}

.south .icon {
  transform: rotate(180deg);
}

.west {
  grid-area: west;
}

.west .icon {
  transform: rotate(270deg);
}

.command-queue {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  min-height: 132px;
  margin-bottom: 14px;
  align-content: start;
}

.queue-empty {
  grid-column: 1 / -1;
  margin: 0;
  padding: 18px 10px;
  border: 2px dashed rgba(24, 22, 31, 0.32);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
  font-weight: 800;
}

.command-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  min-height: 48px;
  background: #ecfff9;
}

.command-chip span {
  min-width: 1.4em;
  font-weight: 900;
}

.action-row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 8px;
}

.primary-button {
  background: var(--gold);
  font-weight: 900;
}

.result-panel {
  margin-top: 14px;
  border: 2px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #f2fff7;
}

.result-panel p {
  margin: 0 0 8px;
}

.result-title {
  font-size: 1.25rem;
  font-weight: 900;
}

.result-meta {
  color: var(--muted);
  font-weight: 750;
}

.result-panel button {
  width: 100%;
  margin-top: 4px;
}

@media (max-width: 840px) {
  .hero {
    align-items: start;
    flex-direction: column;
  }

  .date-tools {
    justify-content: start;
    width: 100%;
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .command-panel {
    position: static;
  }

  .hud {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 430px) {
  .shell {
    width: min(100% - 16px, 420px);
    padding-top: 12px;
  }

  .hero {
    gap: 10px;
    margin-bottom: 10px;
  }

  h1 {
    font-size: 2.25rem;
  }

  .date-tools {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px;
  }

  .date-tools .small-button {
    grid-column: span 1;
  }

  .play-surface,
  .command-panel {
    padding: 10px;
  }

  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 10px;
  }

  .hud div {
    min-height: 50px;
    padding: 6px;
  }

  .board {
    width: 100%;
  }

  .dir-button {
    min-height: 50px;
  }

  .command-queue {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    min-height: 104px;
    gap: 6px;
  }

  .command-chip {
    min-height: 42px;
  }

  .command-chip .icon {
    width: 20px;
    height: 20px;
  }

  .action-row {
    grid-template-columns: 1fr;
  }
}