:root {
  --grass: #4c7d3a;
  --grass-light: #74ad57;
  --dirt: #6b4b34;
  --dirt-dark: #4f3728;
  --stone: #8c8c8c;
  --stone-dark: #686868;
  --emerald: #20bf55;
  --emerald-dark: #128239;
  --text: #f9f3d3;
  --panel: #2f2f2f;
  --outline: #171717;
  --pixel: 12px;
  --text-shadow-dark: rgba(0, 0, 0, 0.5);
  --tex-cobble: url("images/cobblestone.png");
  --tex-cobble-mossy: url("images/cobblestone_mossy.png");
  --tex-dirt: url("images/dirt.png");
  --tex-grass: url("images/grass.png");
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Press Start 2P", cursive;
  color: var(--text);
  text-shadow: 2px 2px 0 var(--text-shadow-dark);
  background-color: #445d35;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.34)),
    var(--tex-grass),
    var(--tex-dirt);
  background-size: auto, 96px 96px, 96px 96px;
  background-repeat: repeat, repeat-x, repeat;
  background-position: center, top center, center;
  image-rendering: pixelated;
}

.game-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 1rem auto;
  border: 4px solid var(--outline);
  background-color: #4b4b4b;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.43)),
    var(--tex-cobble);
  background-size: auto, 72px 72px;
  background-repeat: repeat, repeat;
  box-shadow: 0 0 0 6px rgba(0, 0, 0, 0.35), inset 0 0 0 4px rgba(0, 0, 0, 0.25);
}

.hud {
  padding: 1.2rem;
  border-bottom: 4px solid var(--outline);
  background-color: #4b7a38;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(0, 0, 0, 0.32)),
    var(--tex-dirt);
  background-size: auto, 72px 72px;
  background-repeat: repeat, repeat;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1rem, 2vw, 1.35rem);
  line-height: 1.4;
}

.stats-grid {
  display: grid;
  gap: 0.8rem;
}

.stats-grid p {
  margin: 0;
  font-size: 0.74rem;
  line-height: 1.6;
}

.layout {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(300px, 420px);
}

.click-area {
  padding: 1.2rem;
  min-height: 450px;
  border-right: 4px solid var(--outline);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  background-color: #444444;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.4)),
    var(--tex-cobble);
  background-size: auto, 72px 72px;
  background-repeat: repeat, repeat;
}

.hint {
  margin: 0;
  text-align: center;
  font-size: 0.62rem;
  line-height: 1.7;
  max-width: 38ch;
}

#cat-button {
  position: relative;
  width: 260px;
  height: 260px;
  border: 4px solid var(--outline);
  background-color: #624633;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.36)),
    var(--tex-dirt);
  background-size: auto, 64px 64px;
  background-repeat: repeat, repeat;
  cursor: pointer;
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: inset 0 0 0 4px rgba(0, 0, 0, 0.35), inset 0 14px 0 rgba(128, 177, 86, 0.55);
}

#cat-button:active {
  transform: translateY(2px);
}

#cat-button.hit {
  animation: cat-hit 0.16s steps(2, end);
}

@keyframes cat-hit {
  0% { transform: scale(1) translateY(0); }
  40% { transform: scale(0.95) translateY(3px); }
  80% { transform: scale(1.05) translateY(-2px); }
  100% { transform: scale(1) translateY(0); }
}

#cat-image {
  width: 72%;
  max-height: 74%;
  object-fit: contain;
  image-rendering: pixelated;
  pointer-events: none;
  user-select: none;
  filter: drop-shadow(0 6px 0 rgba(0, 0, 0, 0.35));
}

.button-label {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.5rem;
  color: #f3dfb8;
  text-shadow: 2px 2px 0 #1b120c;
}

.floating-text {
  position: absolute;
  color: var(--emerald);
  font-size: 1.5rem;
  font-family: "Press Start 2P", cursive;
  transform: translate(-50%, -50%);
  pointer-events: none;
  text-shadow: 2px 2px 0 #13200d;
  animation: float-up 0.75s linear forwards;
}

@keyframes float-up {
  0% {
    opacity: 0;
    transform: translate(-50%, -40%) scale(0.9);
  }
  15% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -170%) scale(1.1);
  }
}

.shop-panel {
  padding: 1.2rem;
  background-color: #474747;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.44)),
    var(--tex-cobble-mossy);
  background-size: auto, 72px 72px;
  background-repeat: repeat, repeat;
}

.shop-panel h2 {
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

.upgrade-list {
  display: grid;
  gap: 0.75rem;
}

.upgrade-card {
  border: 3px solid var(--outline);
  padding: 0.7rem;
  background-color: #565656;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(0, 0, 0, 0.38)),
    var(--tex-cobble);
  background-size: auto, 56px 56px;
  background-repeat: repeat, repeat;
}

.upgrade-title {
  margin: 0 0 0.6rem;
  font-size: 0.62rem;
  line-height: 1.5;
}

.upgrade-meta {
  margin: 0 0 0.5rem;
  font-size: 0.53rem;
  line-height: 1.6;
}

.buy-btn {
  width: 100%;
  border: 3px solid #0f2314;
  background-color: #25793a;
  background-image:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(0, 0, 0, 0.43)),
    var(--tex-cobble);
  background-size: auto, 48px 48px;
  background-repeat: repeat, repeat;
  color: #eafde9;
  padding: 0.55rem 0.4rem;
  font-family: inherit;
  font-size: 0.5rem;
  text-shadow: 2px 2px 0 #13200d;
  cursor: pointer;
}

.buy-btn[disabled] {
  cursor: not-allowed;
  filter: grayscale(0.85) brightness(0.7);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .click-area {
    border-right: none;
    border-bottom: 4px solid var(--outline);
    min-height: 360px;
  }

  #cat-button {
    width: 220px;
    height: 220px;
  }
}