/* ═══════════════════════════════════════════════════
   SOLVE THE FROG — style.css
   Aesthetic: Playful swamp-pond world, rich greens,
   warm ambers, chunky Fredoka font. Card-based UI
   with layered depth and juicy animations.
══════════════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --pond-deep:    #0d2b1f;
  --pond-mid:     #133d2a;
  --pond-surface: #1a5237;
  --pond-light:   #2a7a4f;
  --lily-green:   #3dba6f;
  --lily-bright:  #5ed68a;
  --lily-pale:    #a8f0c2;
  --water-blue:   #1e6b8a;
  --water-light:  #3498c8;
  --gold:         #f5c842;
  --gold-dark:    #d4a017;
  --amber:        #ff9f3d;
  --red:          #e05252;
  --white:        #f5fdf0;
  --off-white:    #dff5e8;
  --shadow-dark:  rgba(0,0,0,0.45);
  --shadow-soft:  rgba(0,0,0,0.22);
  --radius-lg:    18px;
  --radius-md:    12px;
  --radius-sm:    8px;
  --font-display: 'Fredoka One', cursive;
  --font-body:    'Nunito', sans-serif;
  --transition:   0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0; padding: 0;
  /* Prevent selection, drag, highlight */
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  -webkit-touch-callout: none;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--pond-deep);
  font-family: var(--font-body);
  color: var(--white);
}

img { pointer-events: none; draggable: false; }

/* ── Screens ── */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transform: translateY(18px);
  transition: opacity 0.32s ease, transform 0.32s ease;
  overflow: hidden;
}

.screen.active {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════
   HOME SCREEN
══════════════════════════════════════════════════════ */
#screen-home {
  background: radial-gradient(ellipse at 50% 110%, #2d7a4a 0%, #0d2b1f 65%);
  align-items: center;
  justify-content: center;
}

/* Decorative floating emojis */
.home-bg { position: absolute; inset: 0; pointer-events: none; }
.lily-deco {
  position: absolute;
  font-size: 2.4rem;
  animation: floatDeco 4s ease-in-out infinite;
  opacity: 0.35;
}
.lily-deco.l1 { top: 8%; left: 10%; animation-delay: 0s; }
.lily-deco.l2 { top: 15%; right: 12%; animation-delay: 1.1s; }
.lily-deco.l3 { bottom: 22%; left: 8%; animation-delay: 0.6s; }
.lily-deco.l4 { bottom: 18%; right: 10%; animation-delay: 1.8s; }

@keyframes floatDeco {
  0%,100% { transform: translateY(0) rotate(-5deg); }
  50%      { transform: translateY(-12px) rotate(5deg); }
}

.home-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
}

.game-logo { text-align: center; }

.logo-frog {
  font-size: 5.5rem;
  display: block;
  animation: frogBounce 2s ease-in-out infinite;
  filter: drop-shadow(0 8px 20px rgba(0,0,0,0.5));
}

@keyframes frogBounce {
  0%,100% { transform: translateY(0) scaleY(1); }
  40%     { transform: translateY(-18px) scaleY(1.05); }
  55%     { transform: translateY(-20px) scaleY(1.05); }
  70%     { transform: translateY(0) scaleY(0.92); }
  80%     { transform: translateY(-5px) scaleY(1); }
}

.logo-title {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--lily-bright);
  text-shadow: 0 3px 0 #1a5237, 0 6px 16px rgba(0,0,0,0.5);
  letter-spacing: 1px;
  margin-top: 8px;
}

.logo-sub {
  font-size: 0.95rem;
  color: var(--lily-pale);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 4px;
  opacity: 0.75;
}

.home-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(280px, 88vw);
}

/* ═══════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════════ */
.btn {
  width: 100%;
  padding: 14px 24px;
  border: none;
  border-radius: 50px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.btn:active { transform: scale(0.96) translateY(2px); box-shadow: none !important; }

.btn-primary {
  background: linear-gradient(160deg, var(--lily-bright) 0%, var(--lily-green) 100%);
  color: var(--pond-deep);
  box-shadow: 0 6px 0 #267a43, 0 8px 18px rgba(61,186,111,0.4);
}

.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: var(--off-white);
  border: 2px solid rgba(255,255,255,0.15);
  box-shadow: 0 4px 14px rgba(0,0,0,0.3);
}

.btn-hint {
  background: linear-gradient(160deg, #ffe066, var(--gold));
  color: var(--pond-deep);
  font-size: 0.95rem;
  padding: 11px 22px;
  width: auto;
  box-shadow: 0 4px 0 #a87800, 0 6px 14px rgba(245,200,66,0.35);
}

.btn-home {
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--white);
  font-size: 0.85rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 700;
  flex-shrink: 0;
}
.btn-home:active { background: rgba(255,255,255,0.2); }

.btn-icon {
  background: rgba(255,255,255,0.1);
  border: none;
  color: var(--white);
  font-size: 1.2rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 700;
  transition: background var(--transition);
  flex-shrink: 0;
}
.btn-icon:active { background: rgba(255,255,255,0.2); }

/* ═══════════════════════════════════════════════════
   COIN DISPLAY
══════════════════════════════════════════════════════ */
.coin-display {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0,0,0,0.3);
  border: 2px solid var(--gold-dark);
  border-radius: 50px;
  padding: 6px 14px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--gold);
}
.coin-display.small { font-size: 0.9rem; padding: 5px 10px; }
.coin-icon { font-size: 1rem; }
.home-coins { margin-top: -16px; }

/* ═══════════════════════════════════════════════════
   SCREEN HEADER (shared)
══════════════════════════════════════════════════════ */
.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: rgba(0,0,0,0.25);
  border-bottom: 2px solid rgba(255,255,255,0.07);
  flex-shrink: 0;
}
.screen-header h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--lily-bright);
}

/* ═══════════════════════════════════════════════════
   LEVEL SELECT
══════════════════════════════════════════════════════ */
#screen-levels {
  background: linear-gradient(180deg, var(--pond-mid) 0%, var(--pond-deep) 100%);
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 12px;
  padding: 20px 16px;
  overflow-y: auto;
  flex: 1;
}

.level-card {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.3rem;
  transition: transform var(--transition);
  position: relative;
  border: 2px solid transparent;
}
.level-card:active { transform: scale(0.93); }

.level-card.unlocked {
  background: linear-gradient(145deg, var(--pond-surface), var(--pond-light));
  border-color: var(--lily-green);
  box-shadow: 0 4px 12px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.1);
  color: var(--white);
}

.level-card.completed {
  background: linear-gradient(145deg, #1a5c35, #2d8c54);
  border-color: var(--lily-bright);
  box-shadow: 0 4px 12px rgba(61,186,111,0.3);
}

.level-card.locked {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
  cursor: default;
  opacity: 0.5;
  color: rgba(255,255,255,0.3);
}

.level-num { font-size: 1.1rem; }
.level-emoji { font-size: 1.3rem; }
.level-stars { font-size: 0.7rem; letter-spacing: -1px; }

/* ═══════════════════════════════════════════════════
   GAME SCREEN
══════════════════════════════════════════════════════ */
#screen-game {
  background: linear-gradient(180deg, var(--pond-deep) 0%, #0a2018 100%);
}

.game-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(0,0,0,0.3);
  border-bottom: 2px solid rgba(255,255,255,0.06);
  flex-shrink: 0;
}

.hud-center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hud-level {
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--lily-pale);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hud-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--lily-bright);
}

.hud-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.game-stats {
  display: flex;
  justify-content: space-around;
  padding: 8px 16px;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-label {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.4);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-val {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--lily-bright);
}

.game-area {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

/* Center content vertically when it fits without scrolling */
.game-area > div {
  margin: auto;
}

.game-footer {
  display: flex;
  justify-content: center;
  padding: 12px 16px;
  background: rgba(0,0,0,0.25);
  border-top: 1px solid rgba(255,255,255,0.05);
  flex-shrink: 0;
}

/* ── Hint overlay ── */
.hint-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  backdrop-filter: blur(4px);
}
.hint-overlay.hidden { display: none; }

.hint-box {
  background: var(--pond-mid);
  border: 2px solid var(--lily-green);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 300px;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6);
}
.hint-box p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--off-white);
  margin-bottom: 16px;
}

/* ═══════════════════════════════════════════════════
   PUZZLE TYPES — GRID (lily pad / order / memory)
══════════════════════════════════════════════════════ */
.puzzle-grid {
  display: grid;
  gap: 6px;
  width: 100%;
  max-width: 380px;
}

.cell {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s, box-shadow 0.15s;
  position: relative;
  border: 2px solid transparent;
}
.cell:active { transform: scale(0.9); }

/* Lily pad cell */
.cell.lily {
  background: radial-gradient(circle at 40% 35%, #3ecf72, #217a3e);
  border-color: #56e888;
  box-shadow: 0 4px 0 #1a5c2e, 0 6px 12px rgba(0,0,0,0.4);
}
.cell.lily.has-frog { animation: padWobble 0.5s ease; }

@keyframes padWobble {
  0%,100% { transform: scale(1); }
  30%     { transform: scale(1.12); }
  60%     { transform: scale(0.95); }
}

.cell.water {
  background: radial-gradient(circle at 40% 35%, #2a7faa, #15516e);
  border-color: #3498c8;
  box-shadow: inset 0 -3px 6px rgba(0,0,0,0.3);
}

.cell.empty {
  background: rgba(255,255,255,0.02);
  border-color: rgba(255,255,255,0.05);
  cursor: default;
}

.cell.rock {
  background: radial-gradient(circle at 40% 35%, #5a5a5a, #2e2e2e);
  border-color: #444;
}

.cell.goal {
  background: radial-gradient(circle at 40% 35%, #ffe066, #c8960a);
  border-color: var(--gold);
  box-shadow: 0 0 14px rgba(245,200,66,0.6);
  animation: goalPulse 1.4s ease-in-out infinite;
}
@keyframes goalPulse {
  0%,100% { box-shadow: 0 0 10px rgba(245,200,66,0.5); }
  50%     { box-shadow: 0 0 22px rgba(245,200,66,0.9); }
}

.cell.highlighted {
  outline: 3px solid var(--lily-bright);
  outline-offset: 2px;
}

.cell.snake {
  background: radial-gradient(circle at 40% 35%, #8b2020, #4a1010);
  border-color: #c44;
}

.cell.log {
  background: radial-gradient(circle at 40% 35%, #8b5e3c, #5c3a1e);
  border-color: #a0724a;
}

/* ── Fly target ── */
.cell.fly-target {
  background: radial-gradient(circle at 40% 35%, #3a6b2a, #1e4015);
  border-color: #5db848;
}
.cell.fly-caught { opacity: 0.45; }
.order-badge {
  position: absolute;
  top: 3px; right: 5px;
  font-size: 0.65rem;
  font-family: var(--font-display);
  color: rgba(255,255,255,0.8);
  background: rgba(0,0,0,0.4);
  border-radius: 50%;
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
}

/* ── Memory cells ── */
.cell.memory-card {
  background: linear-gradient(145deg, var(--pond-surface), var(--pond-light));
  border-color: var(--lily-green);
  font-size: 1.6rem;
  transition: transform 0.3s, background 0.3s;
}
.cell.memory-card.flipped {
  background: linear-gradient(145deg, #1a5c35, #2d8c54);
  transform: rotateY(0deg);
}
.cell.memory-card.matched {
  background: linear-gradient(145deg, #1e6b3a, #3cb86a);
  border-color: var(--lily-bright);
  opacity: 0.7;
}
.cell.memory-card.face-down { font-size: 2rem; }

/* ── Timing / platform puzzle ── */
.platform-area {
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.platform-lane {
  position: relative;
  width: 100%;
  height: 64px;
  background: rgba(30,107,138,0.25);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid rgba(52,152,200,0.3);
}

.platform-pad {
  position: absolute;
  top: 6px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: linear-gradient(145deg, #3ecf72, #217a3e);
  box-shadow: 0 3px 0 #1a5c2e;
}

.frog-player {
  position: absolute;
  font-size: 2rem;
  transition: left 0.2s, top 0.2s;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.5));
  z-index: 5;
}

/* ── Colour sequence puzzle ── */
.seq-display {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.seq-tile {
  width: 52px; height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  border: 2px solid rgba(255,255,255,0.15);
  transition: transform 0.15s, box-shadow 0.15s;
}
.seq-tile.active {
  transform: scale(1.15);
  box-shadow: 0 0 16px rgba(255,255,255,0.5);
}

.seq-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.seq-btn {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  border: none;
  font-size: 2rem;
  cursor: pointer;
  transition: transform 0.12s;
  box-shadow: 0 4px 0 rgba(0,0,0,0.4);
}
.seq-btn:active { transform: scale(0.9) translateY(3px); box-shadow: none; }

/* ── Maze puzzle ── */
.maze-grid {
  display: grid;
  gap: 3px;
  width: 100%;
  max-width: 340px;
}

.maze-cell {
  aspect-ratio: 1;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: pointer;
  transition: background 0.15s;
}
.maze-cell.path  { background: rgba(61,186,111,0.18); border: 1px solid rgba(61,186,111,0.25); }
.maze-cell.wall  { background: rgba(20,20,20,0.7); border: 1px solid rgba(0,0,0,0.5); cursor: default; }
.maze-cell.start { background: rgba(52,152,200,0.4); border: 1px solid var(--water-light); }
.maze-cell.end   { background: rgba(245,200,66,0.35); border: 1px solid var(--gold); animation: goalPulse 1.4s infinite; }
.maze-cell.frog  { background: rgba(61,186,111,0.3); }
.maze-cell.visited { background: rgba(61,186,111,0.08); }

/* ═══════════════════════════════════════════════════
   WIN SCREEN
══════════════════════════════════════════════════════ */
#screen-win {
  background: radial-gradient(ellipse at 50% 100%, #1a5c35 0%, #0a2018 65%);
  align-items: center;
  justify-content: center;
}

.win-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  padding: 24px;
}

.win-frog {
  font-size: 5rem;
  animation: winBounce 0.7s ease-out;
}
@keyframes winBounce {
  0%   { transform: scale(0) rotate(-30deg); }
  60%  { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0); }
}

.win-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--lily-bright);
  text-shadow: 0 3px 0 #1a5237, 0 5px 16px rgba(0,0,0,0.5);
}

.win-stars {
  display: flex;
  gap: 10px;
  font-size: 2.5rem;
}

.win-stats {
  display: flex;
  gap: 16px;
}

.win-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 12px 18px;
}
.ws-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.5); }
.ws-val { font-family: var(--font-display); font-size: 1.3rem; color: var(--gold); }

.win-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(280px, 88vw);
}

/* ═══════════════════════════════════════════════════
   SHOP SCREEN
══════════════════════════════════════════════════════ */
#screen-shop {
  background: linear-gradient(180deg, var(--pond-mid) 0%, var(--pond-deep) 100%);
}

.shop-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: 20px 16px;
  overflow-y: auto;
  flex: 1;
}

.shop-card {
  background: rgba(255,255,255,0.05);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}
.shop-card:active { transform: scale(0.95); }
.shop-card.owned { border-color: var(--lily-green); background: rgba(61,186,111,0.1); }
.shop-card.equipped { border-color: var(--gold); background: rgba(245,200,66,0.12); }

.shop-frog { font-size: 3.2rem; }
.shop-name { font-family: var(--font-display); font-size: 1rem; color: var(--off-white); }
.shop-price { font-family: var(--font-display); font-size: 0.9rem; color: var(--gold); }
.shop-badge {
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.badge-owned    { background: rgba(61,186,111,0.25); color: var(--lily-bright); }
.badge-equipped { background: rgba(245,200,66,0.25); color: var(--gold); }
.badge-locked   { background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.4); }

/* ═══════════════════════════════════════════════════
   TRANSITIONS & TOASTS
══════════════════════════════════════════════════════ */
.transition-overlay {
  position: fixed;
  inset: 0;
  background: var(--pond-deep);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}
.transition-overlay.active { opacity: 1; pointer-events: all; }
.transition-overlay.hidden { display: none; }

.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(30,50,35,0.95);
  border: 2px solid var(--lily-green);
  border-radius: 50px;
  padding: 10px 22px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--lily-bright);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 200;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.hidden { display: none; }

/* ── Coin pop animation ── */
.coin-pop {
  position: fixed;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--gold);
  pointer-events: none;
  z-index: 300;
  animation: coinFly 1.1s ease-out forwards;
}
@keyframes coinFly {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-60px) scale(1.3); }
}

/* ── Frog jump animation ── */
@keyframes frogJump {
  0%   { transform: scale(1) translateY(0); }
  40%  { transform: scale(1.3) translateY(-12px); }
  100% { transform: scale(1) translateY(0); }
}
.jump-anim { animation: frogJump 0.35s ease; }

/* ── Shake (wrong move) ── */
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%,60% { transform: translateX(-6px); }
  40%,80% { transform: translateX(6px); }
}
.shake { animation: shake 0.35s ease; }

/* ── Star reveal ── */
@keyframes starPop {
  0%   { transform: scale(0) rotate(-40deg); opacity: 0; }
  60%  { transform: scale(1.3) rotate(5deg); opacity: 1; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}
.star-pop { animation: starPop 0.5s ease forwards; opacity: 0; }

/* ═══════════════════════════════════════════════════
   SCROLLBAR
══════════════════════════════════════════════════════ */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(61,186,111,0.3); border-radius: 2px; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════ */
@media (min-width: 500px) {
  .level-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
  .shop-grid { grid-template-columns: repeat(3, 1fr); }
  .logo-title { font-size: 3.2rem; }
}

@media (min-height: 700px) {
  .game-area { padding: 22px; }
}

/* Instruction text in game area */
.puzzle-instruction {
  text-align: center;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  font-weight: 600;
  margin-bottom: 12px;
  max-width: 340px;
}

/* direction buttons for maze */
.dir-btns {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
  gap: 4px;
  margin-top: 14px;
}
.dir-btn {
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.12s;
}
.dir-btn:active { background: rgba(255,255,255,0.2); }
.dir-btn.empty { background: transparent; border-color: transparent; cursor: default; }

/* progress bar for some puzzles */
.progress-bar-wrap {
  width: 100%;
  max-width: 340px;
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 12px;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--lily-green), var(--lily-bright));
  border-radius: 4px;
  transition: width 0.3s ease;
}