:root {
  --bg-sky: linear-gradient(180deg, #83d6ff 0%, #b8ecff 55%, #ecfbff 100%);
  --panel: #fff6dd;
  --panel-border: #f2b545;
  --text: #2f2a1f;
  --button: #ffd36b;
  --button-active: #ffbb29;
  --shadow: 0 6px 0 #d79b2a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Comic Sans MS", sans-serif;
  color: var(--text);
  background: var(--bg-sky);
  background-size: 100% 140%;
  animation: skyShift 16s ease-in-out infinite alternate;
  min-height: 100vh;
}

.app {
  width: min(1000px, 100%);
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.topbar {
  text-align: center;
  background: var(--panel);
  border: 3px solid var(--panel-border);
  border-radius: 16px;
  padding: 0.6rem;
  box-shadow: 0 10px 30px #0000001f;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.topbar p {
  margin: 0.2rem 0 0;
  font-size: 1rem;
}

.game-wrap {
  display: grid;
  place-items: center;
}

canvas {
  width: min(100%, 640px);
  aspect-ratio: 4 / 3;
  border: 4px solid #3f2f15;
  border-radius: 14px;
  image-rendering: pixelated;
  background: #6ec1ff;
  box-shadow: 0 12px 28px #0000002b, inset 0 0 24px #ffffff33;
  touch-action: none;
}

.hud {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.panel {
  background: var(--panel);
  border: 3px solid var(--panel-border);
  border-radius: 16px;
  padding: 0.8rem;
}

.panel h2 {
  margin: 0 0 0.5rem;
}

.inventory {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.block-btn,
.mode-btn,
.dpad button {
  border: 2px solid #6f4e17;
  border-radius: 12px;
  background: var(--button);
  box-shadow: var(--shadow);
  color: #2b1d07;
  font-weight: 700;
  cursor: pointer;
}

.block-btn,
.mode-btn {
  padding: 0.5rem 0.65rem;
  min-width: 88px;
}

.mode-btn {
  margin-top: 0.55rem;
}

.block-btn.selected,
.mode-btn.active {
  background: var(--button-active);
  transform: translateY(2px);
  box-shadow: 0 4px 0 #d79b2a;
}

.controls {
  display: grid;
  gap: 0.5rem;
}

.dpad {
  display: grid;
  gap: 0.5rem;
  justify-items: center;
}

.middle-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.dpad button {
  width: 64px;
  height: 54px;
  font-size: 1.35rem;
}

.dpad button:active,
.block-btn:active,
.mode-btn:active {
  transform: translateY(2px);
  box-shadow: 0 4px 0 #d79b2a;
}

.hint,
.status p {
  margin: 0.4rem 0 0;
  font-size: 0.95rem;
}

.status {
  background: #ffffffcc;
  border: 2px dashed #4f8f38;
  border-radius: 12px;
  padding: 0.5rem 0.8rem;
}

@keyframes skyShift {
  0% {
    background-position: 50% 0%;
  }
  100% {
    background-position: 50% 100%;
  }
}

@media (max-width: 520px) {
  .app {
    padding: 0.65rem;
    gap: 0.75rem;
  }

  .dpad button {
    width: 58px;
    height: 50px;
  }

  .block-btn,
  .mode-btn {
    min-width: 74px;
    padding: 0.4rem 0.5rem;
  }
}