/* ========== RETRO CANDY CRUSH — PIXEL ART STYLE ========== */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

:root {
  --bg: #1a0a2e;
  --bg2: #16213e;
  --border: #7b2d8b;
  --border-light: #e040fb;
  --text: #f5f5f5;
  --text-dim: #aaaaaa;
  --gold: #ffd700;
  --red: #FF4444;
  --orange: #FF8800;
  --yellow: #FFD700;
  --green: #44CC44;
  --blue: #4488FF;
  --purple: #AA44FF;
  --cell-size: 56px;
  --gap: 4px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  image-rendering: pixelated;
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  font-family: 'Press Start 2P', monospace;
  color: var(--text);
  overflow-x: hidden;
}

/* ── CRT Scanline Overlay ── */
.crt-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0,0,0,0.08) 3px,
    rgba(0,0,0,0.08) 4px
  );
}

/* ── App Layout ── */
#app {
  max-width: 520px;
  margin: 0 auto;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  position: relative;
}

/* ── HUD ── */
.hud {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.hud-box {
  background: var(--bg2);
  border: 3px solid var(--border);
  padding: 6px 10px;
  text-align: center;
  min-width: 80px;
  box-shadow: 3px 3px 0 #000, inset 0 0 0 2px rgba(255,255,255,0.05);
}

.title-box {
  flex: 1;
  border-color: var(--border-light);
}

.hud-label {
  display: block;
  font-size: 7px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.hud-value {
  display: block;
  font-size: 14px;
  color: var(--gold);
  text-shadow: 0 0 8px var(--gold);
}

.game-title {
  font-size: 11px;
  color: var(--border-light);
  text-shadow: 2px 2px 0 #000, 0 0 10px var(--border-light);
  line-height: 1.6;
  letter-spacing: 1px;
}

/* ── Score Row ── */
.score-row {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
}

.progress-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.progress-label {
  font-size: 7px;
  color: var(--text-dim);
  text-align: center;
}

.progress-bar-outer {
  background: #0d0d1a;
  border: 2px solid var(--border);
  height: 14px;
  width: 100%;
}

.progress-bar-inner {
  height: 100%;
  background: linear-gradient(90deg, #e040fb, #ffd700);
  width: 0%;
  transition: width 0.4s ease;
  box-shadow: 0 0 8px var(--border-light);
}

/* ── Board ── */
#board-container {
  position: relative;
  background: var(--bg2);
  border: 4px solid var(--border);
  box-shadow: 0 0 20px rgba(224, 64, 251, 0.4), 5px 5px 0 #000;
  padding: 6px;
}

#board {
  display: grid;
  grid-template-columns: repeat(8, var(--cell-size));
  grid-template-rows: repeat(8, var(--cell-size));
  gap: var(--gap);
}

/* ── Candy Cells ── */
.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  background: rgba(0,0,0,0.3);
  transition: transform 0.1s ease;
  user-select: none;
}

.cell:hover {
  border-color: rgba(255,255,255,0.4);
  transform: scale(1.05);
}

.cell.selected {
  border-color: #fff;
  border-width: 3px;
  box-shadow: 0 0 12px #fff, inset 0 0 8px rgba(255,255,255,0.2);
  animation: pulse-selected 0.6s ease-in-out infinite alternate;
}

@keyframes pulse-selected {
  from { box-shadow: 0 0 8px #fff; }
  to   { box-shadow: 0 0 20px #fff, 0 0 30px rgba(255,255,255,0.5); }
}

/* ── Candy Sprites (CSS pixel-art) ── */
.candy {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  line-height: 1;
}

/* candy type backgrounds with pixel-art bevel */
.candy-1 { background: var(--red);    box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(255,68,68,0.6); }
.candy-2 { background: var(--orange); box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(255,136,0,0.6); }
.candy-3 { background: var(--yellow); box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(255,215,0,0.6); }
.candy-4 { background: var(--green);  box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(68,204,68,0.6); }
.candy-5 { background: var(--blue);   box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(68,136,255,0.6); }
.candy-6 { background: var(--purple); box-shadow: inset -3px -3px 0 rgba(0,0,0,0.4), inset 3px 3px 0 rgba(255,255,255,0.3), 0 0 8px rgba(170,68,255,0.6); }

/* ── Animations ── */
@keyframes swap-right {
  0%   { transform: translateX(0); }
  50%  { transform: translateX(calc(var(--cell-size) + var(--gap))); }
  100% { transform: translateX(0); }
}
@keyframes swap-left {
  0%   { transform: translateX(0); }
  50%  { transform: translateX(calc(-1 * (var(--cell-size) + var(--gap)))); }
  100% { transform: translateX(0); }
}
@keyframes swap-down {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(calc(var(--cell-size) + var(--gap))); }
  100% { transform: translateY(0); }
}
@keyframes swap-up {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(calc(-1 * (var(--cell-size) + var(--gap)))); }
  100% { transform: translateY(0); }
}

.anim-swap-right { animation: swap-right 0.2s ease; }
.anim-swap-left  { animation: swap-left  0.2s ease; }
.anim-swap-down  { animation: swap-down  0.2s ease; }
.anim-swap-up    { animation: swap-up    0.2s ease; }

@keyframes invalid-shake {
  0%, 100% { transform: translateX(0); }
  20%  { transform: translateX(-6px); }
  40%  { transform: translateX(6px); }
  60%  { transform: translateX(-4px); }
  80%  { transform: translateX(4px); }
}
.anim-shake { animation: invalid-shake 0.3s ease; }

@keyframes match-burst {
  0%   { transform: scale(1);   opacity: 1; }
  50%  { transform: scale(1.4); opacity: 0.7; }
  100% { transform: scale(0);   opacity: 0; }
}
.anim-burst { animation: match-burst 0.3s ease forwards; }

@keyframes fall-in {
  0%   { transform: translateY(-30px); opacity: 0; }
  100% { transform: translateY(0);     opacity: 1; }
}
.anim-fall { animation: fall-in 0.25s ease; }

@keyframes score-pop {
  0%   { transform: translateY(0)   scale(1);   opacity: 1; }
  100% { transform: translateY(-40px) scale(1.3); opacity: 0; }
}
.score-popup {
  position: absolute;
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--gold);
  text-shadow: 1px 1px 0 #000;
  pointer-events: none;
  z-index: 100;
  animation: score-pop 0.8s ease forwards;
}

/* ── Controls ── */
.controls {
  width: 100%;
  display: flex;
  justify-content: center;
  gap: 12px;
}

.pixel-btn {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  padding: 10px 18px;
  background: var(--border);
  color: #fff;
  border: none;
  border-bottom: 4px solid rgba(0,0,0,0.5);
  border-right: 4px solid rgba(0,0,0,0.5);
  cursor: pointer;
  text-shadow: 1px 1px 0 #000;
  transition: all 0.1s;
  box-shadow: 3px 3px 0 #000;
}

.pixel-btn:hover {
  background: var(--border-light);
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 #000;
}

.pixel-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 #000;
  border-bottom-width: 2px;
  border-right-width: 2px;
}

.secondary-btn {
  background: #333;
}
.secondary-btn:hover {
  background: #555;
}

/* ── Overlays ── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(3px);
}

.overlay-box {
  background: var(--bg2);
  border: 4px solid var(--border-light);
  box-shadow: 0 0 30px rgba(224, 64, 251, 0.5), 8px 8px 0 #000;
  padding: 30px 24px;
  text-align: center;
  max-width: 340px;
  width: 90%;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.overlay-title {
  font-size: 16px;
  line-height: 1.8;
  color: var(--border-light);
  text-shadow: 2px 2px 0 #000, 0 0 15px var(--border-light);
}

.overlay-sub {
  font-size: 9px;
  color: var(--text-dim);
  line-height: 2;
}

.high-score-display {
  font-size: 8px;
  color: var(--gold);
}

/* ── Responsive ── */
@media (max-width: 480px) {
  :root {
    --cell-size: 40px;
    --gap: 3px;
  }
  .candy { width: 30px; height: 30px; font-size: 18px; }
  .game-title { font-size: 9px; }
  .hud-value { font-size: 11px; }
}

@media (max-width: 360px) {
  :root {
    --cell-size: 34px;
    --gap: 2px;
  }
  .candy { width: 26px; height: 26px; font-size: 15px; }
}

/* ── Pixel grid pattern behind board ── */
#board-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 8px 8px;
  pointer-events: none;
  border-radius: inherit;
}

/* ── Cascade flash ── */
@keyframes cascade-flash {
  0%, 100% { box-shadow: 0 0 20px rgba(224,64,251,0.4); }
  50%       { box-shadow: 0 0 40px rgba(224,64,251,0.9); }
}
#board-container.cascade {
  animation: cascade-flash 0.3s ease;
}