:root {
  color-scheme: light;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: #f4e7c7;
  color: #1f2a2c;
  --ink: #1f2a2c;
  --paper: #fff6dd;
  --paper-deep: #f4e7c7;
  --terminal: #70d8ae;
  --terminal-dark: #1e795f;
  --mint-soft: #dcf7dd;
  --tomato: #ef6044;
  --orange: #f59b3d;
  --lemon: #ffd94c;
  --graphite: #2c383b;
  --rail: rgba(44, 56, 59, 0.18);
  --shadow: rgba(61, 43, 27, 0.24);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
}

body {
  display: flex;
  justify-content: center;
  padding: 16px;
  background:
    linear-gradient(90deg, rgba(31, 42, 44, 0.07) 0 2px, transparent 2px 44px),
    linear-gradient(180deg, #fff2c8 0%, #f4e7c7 48%, #cbeed8 100%);
}

button {
  min-height: 58px;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  font: 900 1rem/1.08 "Trebuchet MS", "Segoe UI", sans-serif;
  letter-spacing: 0;
  cursor: pointer;
  touch-action: manipulation;
}

button:focus-visible,
#gameCanvas:focus-visible {
  outline: 4px solid #fffdf2;
  outline-offset: 3px;
  box-shadow: 0 0 0 7px rgba(31, 42, 44, 0.42);
}

.game-shell {
  position: relative;
  width: min(100%, 1000px);
  min-height: 100vh;
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.eyebrow {
  margin: 0 0 4px;
  color: #a33b29;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 680px;
  color: var(--ink);
  font-size: 2.45rem;
  line-height: 1;
}

h2 {
  color: var(--graphite);
  font-size: 1.12rem;
}

.sound-toggle,
.command-button,
.control-row button,
.result-card button {
  box-shadow: 0 7px 0 var(--shadow);
}

.sound-toggle {
  flex: 0 0 auto;
  min-width: 132px;
  padding: 0 18px;
  background: var(--graphite);
  color: #fff6dd;
}

.hud-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}

.hud-tile {
  min-width: 0;
  min-height: 66px;
  padding: 10px;
  border: 3px solid var(--rail);
  border-radius: 8px;
  background: rgba(255, 246, 221, 0.9);
  box-shadow: 0 6px 0 rgba(61, 43, 27, 0.13);
}

.hud-tile span {
  display: block;
  color: #7c5132;
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.hud-tile strong {
  display: block;
  margin-top: 3px;
  color: var(--ink);
  font-size: 1.68rem;
  line-height: 1;
  white-space: nowrap;
}

.canvas-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 4px solid #fffdf2;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.24) 0 2px, transparent 2px 40px),
    linear-gradient(180deg, #78dcb4, #2e9675);
  box-shadow: 0 12px 0 rgba(61, 43, 27, 0.17);
  overflow: hidden;
  touch-action: none;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(90deg, rgba(31, 42, 44, 0.13) 0 2px, transparent 2px 80px),
    linear-gradient(180deg, var(--mint-soft), #8ce3bd);
  touch-action: none;
}

.lab-panel {
  display: grid;
  gap: 10px;
  margin-top: 10px;
  padding: 10px;
  border: 3px solid var(--rail);
  border-radius: 8px;
  background: rgba(255, 246, 221, 0.9);
}

.panel-heading,
.program-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 10px;
}

.panel-heading p,
.program-heading p {
  min-width: 0;
  margin: 0;
  color: #7c5132;
  font-weight: 900;
}

.command-palette {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  touch-action: none;
}

.command-button {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 70px;
  padding: 8px 10px;
  background: #fffdf2;
  text-align: left;
  touch-action: none;
}

.command-button[aria-pressed="true"] {
  background: var(--lemon);
  transform: translateY(2px);
  box-shadow: 0 4px 0 rgba(61, 43, 27, 0.28);
}

.command-chip {
  display: block;
  width: 28px;
  height: 28px;
  border: 3px solid rgba(31, 42, 44, 0.28);
  border-radius: 7px;
  background: var(--tomato);
  box-shadow: inset 0 4px 0 rgba(255, 255, 255, 0.34);
}

.left-command .command-chip {
  background:
    linear-gradient(135deg, transparent 0 42%, rgba(31, 42, 44, 0.48) 43% 57%, transparent 58%),
    var(--orange);
}

.right-command .command-chip {
  background:
    linear-gradient(45deg, transparent 0 42%, rgba(31, 42, 44, 0.48) 43% 57%, transparent 58%),
    var(--terminal);
}

.action-command .command-chip {
  background: var(--lemon);
}

.program-strip {
  display: flex;
  min-height: 62px;
  gap: 8px;
  align-items: center;
  padding: 8px;
  border: 3px dashed rgba(31, 42, 44, 0.24);
  border-radius: 8px;
  background: rgba(220, 247, 221, 0.72);
  overflow-x: auto;
  touch-action: none;
}

.program-empty {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 8px;
  background: rgba(255, 253, 242, 0.72);
  color: #7c5132;
  font-weight: 900;
  white-space: nowrap;
}

.touch-controls {
  touch-action: none;
}

.control-row {
  display: grid;
  grid-template-columns: 1.25fr repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.control-row button,
.result-card button {
  min-width: 0;
  padding: 0 10px;
  background: #fffdf2;
}

.primary-action {
  background: var(--tomato) !important;
  color: #231914;
}

#stepButton {
  background: var(--lemon);
}

#undoButton {
  background: #a9e7ca;
}

#clearButton {
  background: #f8bd73;
}

#restartButton {
  background: #d8f3e0;
}

.status-text {
  min-height: 48px;
  margin: 10px 0 0;
  padding: 12px 14px;
  border-left: 8px solid var(--terminal-dark);
  border-radius: 8px;
  background: rgba(255, 246, 221, 0.92);
  color: var(--ink);
  font-weight: 900;
}

.result-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(31, 42, 44, 0.58);
  z-index: 10;
}

.result-card {
  width: min(100%, 430px);
  padding: 24px;
  border: 4px solid var(--graphite);
  border-radius: 8px;
  background: #fff6dd;
  color: var(--ink);
  box-shadow: 0 14px 0 rgba(61, 43, 27, 0.28);
}

.result-card p:not(.eyebrow) {
  margin: 12px 0 18px;
  font-weight: 800;
}

.result-card button {
  min-width: 170px;
  background: var(--lemon);
}

@media (max-width: 720px) {
  body {
    padding: 8px;
  }

  .game-shell {
    min-height: auto;
  }

  .game-header {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 8px;
  }

  h1 {
    font-size: 1.58rem;
    line-height: 1.04;
  }

  .sound-toggle {
    width: 100%;
  }

  .hud-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 8px;
  }

  .hud-tile {
    min-height: 54px;
    padding: 8px;
  }

  .hud-tile strong {
    font-size: 1.28rem;
  }

  .lab-panel {
    gap: 8px;
    margin-top: 8px;
    padding: 8px;
  }

  .panel-heading,
  .program-heading {
    align-items: start;
    flex-direction: column;
    gap: 4px;
  }

  .command-palette {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .command-button {
    min-height: 58px;
    gap: 6px;
    padding: 7px 8px;
    font-size: 0.92rem;
  }

  .command-chip {
    width: 24px;
    height: 24px;
    border-radius: 6px;
  }

  .program-strip {
    min-height: 58px;
    gap: 6px;
    padding: 6px;
  }

  .control-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-top: 8px;
  }

  .restart-control {
    grid-column: 1 / -1;
  }

  .control-row button,
  .result-card button {
    min-height: 58px;
    padding: 0 6px;
    font-size: 0.9rem;
  }

  .status-text {
    min-height: 44px;
    margin-top: 8px;
    padding: 9px 10px;
    font-size: 0.9rem;
  }
}

@media (max-width: 360px) {
  body {
    padding: 6px;
  }

  h1 {
    font-size: 1.36rem;
  }

  .eyebrow,
  .hud-tile span {
    font-size: 0.68rem;
  }

  .hud-tile strong {
    font-size: 1.12rem;
  }

  .command-button,
  .control-row button,
  .sound-toggle,
  .result-card button {
    font-size: 0.84rem;
  }

  .command-chip {
    width: 22px;
    height: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .command-button[aria-pressed="true"] {
    transform: none;
  }
}