/* === FONT === */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
img { display: block; }

/* === DESIGN TOKENS === */
:root {
  --font-pixel: 'Press Start 2P', monospace;

  /* Light theme */
  --bg: #e8e0d0;
  --surface: rgba(255,255,255,0.7);
  --surface-border: rgba(0,0,0,0.15);
  --text: #1a1a1a;
  --text-muted: #555;
  --accent: #6A9A3A;
  --accent-dark: #4a7a1a;
  --btn-bg: rgba(255,255,255,0.8);
  --btn-border: rgba(0,0,0,0.2);
  --btn-hover: rgba(255,255,255,0.95);
  --buy-bg: #6A9A3A;
  --buy-text: #fff;
  --buy-disabled: #aaa;
  --buy-disabled-bg: rgba(0,0,0,0.1);
  --shadow: 0 2px 12px rgba(0,0,0,0.15);
  --dialog-bg: #f0ebe0;
}

body.theme-dark {
  --bg: #0f0f1a;
  --surface: rgba(30,30,50,0.85);
  --surface-border: rgba(255,255,255,0.1);
  --text: #e8e0ff;
  --text-muted: #9990bb;
  --accent: #8ac050;
  --accent-dark: #6a9a30;
  --btn-bg: rgba(40,40,70,0.9);
  --btn-border: rgba(255,255,255,0.15);
  --btn-hover: rgba(60,60,100,0.9);
  --buy-bg: #6a9a30;
  --buy-text: #fff;
  --buy-disabled: #444;
  --buy-disabled-bg: rgba(255,255,255,0.05);
  --shadow: 0 2px 16px rgba(0,0,0,0.5);
  --dialog-bg: #1a1a2e;
}

/* === BIOME BACKGROUNDS === */
body { background: var(--bg); transition: background 0.3s; }

/* Overworld */
body.biome-overworld { --bg-color-a: #87CEEB; --bg-color-b: #a8d8a8; }
body.biome-overworld.theme-dark { --bg-color-a: #0d1b2a; --bg-color-b: #0a2a0a; }

/* Nether */
body.biome-nether { --bg-color-a: #3d0000; --bg-color-b: #5a1000; }
body.biome-nether.theme-dark { --bg-color-a: #1a0000; --bg-color-b: #2a0800; }

/* End */
body.biome-end { --bg-color-a: #0a0015; --bg-color-b: #0f0a25; }
body.biome-end.theme-dark { --bg-color-a: #050008; --bg-color-b: #080512; }

/* Background canvas */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  image-rendering: pixelated;
}

/* === LAYOUT === */
#app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100dvh;
  padding: 0.75rem 1rem;
  gap: 0.5rem;
  overflow: hidden;
}

/* === HEADER === */
#header {
  width: 100%;
  max-width: 480px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

#title {
  font-family: var(--font-pixel);
  font-size: clamp(1rem, 4vw, 1.5rem);
  color: var(--text);
  text-shadow:
    2px 2px 0 rgba(0,0,0,0.4),
    -1px -1px 0 rgba(255,255,255,0.1);
  letter-spacing: 0.05em;
}

.byline {
  font-size: 0.5em;
  opacity: 0.7;
  letter-spacing: 0.03em;
  word-spacing: -0.65em;
  text-shadow: none;
  white-space: nowrap;
}

#header-controls {
  display: flex;
  gap: 0.4rem;
}

.ctrl-btn {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  padding: 0.4rem 0.6rem;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text);
  border-radius: 4px;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}

.ctrl-btn:hover { background: var(--btn-hover); }
.ctrl-btn:active { transform: scale(0.95); }

/* === SHOP === */
#shop {
  width: 100%;
  max-width: 480px;
  flex-shrink: 0;
}

.buy-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--buy-bg);
  color: var(--buy-text);
  font-family: var(--font-pixel);
  font-size: clamp(0.45rem, 1.8vw, 0.6rem);
  border-radius: 4px;
  border: 2px solid rgba(0,0,0,0.2);
  transition: filter 0.15s, transform 0.1s, background 0.15s;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.buy-btn:hover:not(:disabled) { filter: brightness(1.1); }
.buy-btn:active:not(:disabled) { transform: scale(0.98); }

.buy-btn:disabled {
  background: var(--buy-disabled-bg);
  color: var(--buy-disabled);
  border-color: var(--surface-border);
  box-shadow: none;
  cursor: not-allowed;
}

.buy-cost { opacity: 0.9; }

/* === FEEDBACK LAYER === */
#feedback-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  overflow: hidden;
}

.feedback-clone {
  position: absolute;
  image-rendering: pixelated;
  pointer-events: none;
  animation: feedbackDrop 0.8s ease-out forwards;
}

@keyframes feedbackDrop {
  0%   { transform: translateY(0) scale(1);   opacity: 0.9; }
  60%  { transform: translateY(60px) scale(0.85); opacity: 0.6; }
  100% { transform: translateY(100px) scale(0.7); opacity: 0; }
}

.feedback-text {
  position: absolute;
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  pointer-events: none;
  animation: feedbackFloat 1s ease-out forwards;
  white-space: nowrap;
}

.feedback-text.positive { color: #6adf4a; }
.feedback-text.negative { color: #ff6060; }

@keyframes feedbackFloat {
  0%   { transform: translateY(0);    opacity: 1; }
  100% { transform: translateY(-50px); opacity: 0; }
}

/* === MAIN BLOCK === */
#block-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

#main-block {
  position: relative;
  display: block;
  padding: 0;
  background: none;
  border: none;
  touch-action: manipulation;
  /* Size: 40% of shorter screen dimension */
  width: min(40vw, 40vh, 200px);
  height: min(40vw, 40vh, 200px);
  transition: transform 0.08s;
  -webkit-tap-highlight-color: transparent;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,0.4));
}

#main-block:active { transform: scale(0.92); }

#block-img {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  border-radius: 4px;
  user-select: none;
  pointer-events: none;
}

#dissolve-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  image-rendering: pixelated;
  border-radius: 4px;
}

/* Dragon egg pulse animation */
body[data-block="dragon-egg"] #main-block {
  filter: drop-shadow(0 0 12px #8000ff) drop-shadow(0 4px 16px rgba(0,0,0,0.4));
  animation: eggPulse 2s ease-in-out infinite;
}

@keyframes eggPulse {
  0%, 100% { filter: drop-shadow(0 0 8px #6000c0) drop-shadow(0 4px 16px rgba(0,0,0,0.4)); }
  50% { filter: drop-shadow(0 0 20px #a000ff) drop-shadow(0 4px 20px rgba(80,0,128,0.6)); }
}

/* Dragon egg crack state */
body[data-block="dragon-egg"].egg-cracking #block-img {
  animation: eggCrack 0.6s steps(3) forwards;
}

@keyframes eggCrack {
  0%   { filter: brightness(1); }
  33%  { filter: brightness(1.5) sepia(1) hue-rotate(270deg); }
  66%  { filter: brightness(2) sepia(1) hue-rotate(270deg); }
  100% { filter: brightness(1.2) sepia(0.5) hue-rotate(270deg); }
}

/* === STATISTICS === */
#stats {
  width: 100%;
  max-width: 480px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  flex-shrink: 0;
  backdrop-filter: blur(4px);
  box-shadow: var(--shadow);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.2rem 0;
  border-bottom: 1px solid var(--surface-border);
  gap: 0.5rem;
}

.stat-row:last-child { border-bottom: none; }

.stat-label {
  font-family: var(--font-pixel);
  font-size: clamp(0.4rem, 1.5vw, 0.5rem);
  color: var(--text-muted);
  white-space: nowrap;
}

.stat-value {
  font-family: var(--font-pixel);
  font-size: clamp(0.4rem, 1.5vw, 0.5rem);
  color: var(--text);
  text-align: right;
}

/* === FOOTER === */
#footer {
  flex-shrink: 0;
  padding-bottom: 0.25rem;
}

#version {
  font-family: var(--font-pixel);
  font-size: 0.4rem;
  color: var(--text-muted);
  opacity: 0.5;
}

/* === DIALOG / OVERLAY === */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(3px);
}

.overlay.hidden { display: none; }

.dialog {
  background: var(--dialog-bg);
  border: 2px solid var(--surface-border);
  border-radius: 8px;
  padding: 1.5rem;
  max-width: 360px;
  width: 100%;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  animation: dialogIn 0.2s ease-out;
}

@keyframes dialogIn {
  from { transform: scale(0.9); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.dialog h2 {
  font-family: var(--font-pixel);
  font-size: clamp(0.6rem, 3vw, 0.8rem);
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.6;
}

#dialog-body {
  font-family: var(--font-pixel);
  font-size: clamp(0.4rem, 2vw, 0.55rem);
  color: var(--text-muted);
  line-height: 2;
  margin-bottom: 1.2rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--surface-border);
}

.summary-row:last-child { border-bottom: none; }

.dialog-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.dialog-btn {
  font-family: var(--font-pixel);
  font-size: clamp(0.4rem, 2vw, 0.55rem);
  padding: 0.6rem 1rem;
  border-radius: 4px;
  border: 2px solid transparent;
  transition: filter 0.15s, transform 0.1s;
}

.dialog-btn:active { transform: scale(0.96); }

.dialog-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent-dark);
}

.dialog-btn.primary:hover { filter: brightness(1.1); }

.dialog-btn.secondary {
  background: var(--btn-bg);
  color: var(--text);
  border-color: var(--btn-border);
}

.dialog-btn.secondary:hover { background: var(--btn-hover); }

/* === LANDSCAPE ADJUSTMENTS === */
@media (orientation: landscape) and (max-height: 500px) {
  #app { flex-direction: row; flex-wrap: wrap; padding: 0.4rem 0.6rem; gap: 0.4rem; }
  #header { order: 0; width: 100%; }
  #shop { order: 1; width: calc(50% - 0.2rem); }
  #block-area { order: 2; flex: none; width: min(35vh, 35vw, 180px); height: min(35vh, 35vw, 180px); }
  #stats { order: 3; width: calc(50% - 0.2rem); flex: 1; }
  #footer { order: 4; width: 100%; text-align: center; }
  #main-block { width: min(30vh, 30vw, 150px); height: min(30vh, 30vw, 150px); }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  .feedback-clone { animation: none; opacity: 0; }
  .feedback-text { animation: feedbackFloat 0.4s ease-out forwards; }
  #main-block { transition: none; }
  body[data-block="dragon-egg"] #main-block { animation: none; }
  .dialog { animation: none; }
}

/* === UTILITY === */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}