/* ============================================
   MONKEY'S BANANA BASKET v2.0
   Layout: LEFT bananas | CENTER worksheet | RIGHT numbers
   Mask: U-shaped (open top, curved bottom)
   ============================================ */

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html, body {
  width:100%; height:100%; overflow:hidden;
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* --- Jungle background --- */
#bg-jungle {
  position:fixed; top:0; left:0; width:100%; height:100%;
  background: url('../assets/bg-jungle-dimmed.png') center/cover no-repeat;
  z-index:0;
}

/* --- Game container: 650x750, three columns --- */
#game-container {
  position:absolute; top:50%; left:50%;
  width:850px; height:700px;
  transform-origin: center center;
  z-index:1;
  display:flex;
  align-items:center;
  gap:0;
  touch-action:none;
}

/* --- LEFT column: bananas --- */
#left-column {
  width:175px; height:100%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}

#banana-tray {
  display:grid;
  grid-template-columns: 55px 55px;
  gap: 10px 15px;
  justify-content:center;
}

.banana-drag {
  width:55px; height:110px;
  cursor:grab; touch-action:none;
  -webkit-user-drag:none;
  transition: opacity 0.2s, transform 0.2s;
}
.banana-drag:active { cursor:grabbing; }
.banana-drag.dragging { opacity:0.3; }
.banana-drag.dropped { opacity:0; pointer-events:none; transform:scale(0.5); }

/* --- CENTER column: worksheet --- */
#center-column {
  flex:1;
  display:flex; align-items:center; justify-content:center;
}

#worksheet {
  position:relative;
  width:400px; height:628px;
  background: url('../assets/bg-worksheet.png') top left / 400px 628px no-repeat;
  flex-shrink:0;
}

/* Banana container with U-shaped mask */
#basket-inside {
  position:absolute; top:0; left:0;
  width:400px; height:628px;
  z-index:2;
  -webkit-mask-image: url('../assets/basket-mask.png');
  mask-image: url('../assets/basket-mask.png');
  -webkit-mask-size: 400px 628px;
  mask-size: 400px 628px;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  overflow:visible;
}

.banana-in-basket {
  position:absolute;
  width:50px; height:100px;
  filter: drop-shadow(2px 5px 3px rgba(80, 40, 0, 0.4)) brightness(0.9);
  animation: banana-enter 0.5s ease;
}

/* Basket front — disabled, mask handles clipping */
#basket-front {
  display:none;
}

/* Monkey confetti — scattered small monkeys on correct/wrong */
#confetti-layer {
  position:fixed; top:0; left:0; width:100%; height:100%;
  z-index:50;
  pointer-events:none;
  overflow:hidden;
}
.confetti-monkey {
  position:absolute;
  width:120px; height:120px;
  object-fit:contain;
  opacity:0;
  pointer-events:none;
  animation: confetti-fall 2.5s ease-out forwards;
}
@keyframes confetti-fall {
  0% { opacity:0; transform:scale(0.3) rotate(0deg) translateY(-40px); }
  15% { opacity:1; transform:scale(1.1) rotate(-10deg) translateY(0); }
  30% { transform:scale(1) rotate(5deg); opacity:1; }
  70% { opacity:0.8; }
  100% { opacity:0; transform:scale(0.8) rotate(-5deg) translateY(30px); }
}

/* Clasp — always visible on basket front */
#num-slot {
  position:absolute;
  top:418px; left:174px;
  width:55px; height:54px;
  background: url('../assets/num-slot.png') center/contain no-repeat;
  z-index:5;
  opacity:0.85;
  transition: opacity 0.4s, transform 0.3s, filter 0.3s;
  pointer-events:none;
}
#num-slot.active {
  opacity:1;
  animation: slot-pulse 1.2s ease-in-out infinite;
}
#num-slot.highlight {
  filter:brightness(1.3); transform:scale(1.12);
}

/* Answer number in slot */
#num-answer {
  position:absolute;
  top:418px; left:174px;
  width:55px; height:54px;
  z-index:6; opacity:0;
  transition: opacity 0.3s;
  pointer-events:none;
}
#num-answer.visible { opacity:1; }
#num-answer img { width:100%; height:100%; }

/* --- RIGHT column: numbers --- */
#right-column {
  width:175px; height:100%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}

#number-tray {
  display:none;
  grid-template-columns: 55px 55px;
  gap: 8px 12px;
  justify-content:center;
}
#number-tray.visible { display:grid; }

.num-drag {
  width:55px; height:54px;
  cursor:grab; touch-action:none;
  -webkit-user-drag:none;
  transition: opacity 0.2s, transform 0.2s;
}
.num-drag:active { cursor:grabbing; }
.num-drag.dragging { opacity:0.3; }

/* --- Overlays --- */
.overlay {
  position:fixed; top:0; left:0; width:100%; height:100%;
  background:rgba(0,0,0,0.55);
  z-index:100;
  display:flex; align-items:center; justify-content:center;
  padding:20px;
}
.overlay.hidden { display:none; }

.overlay-box {
  background:#FFF8EC;
  border:4px solid #E8943A;
  border-radius:20px;
  padding:32px 28px;
  max-width:340px; width:100%;
  text-align:center;
  box-shadow:0 8px 30px rgba(0,0,0,0.3);
  animation: pop-in 0.3s ease;
}
.overlay-box h1 { font-size:22px; font-weight:700; color:#8B4513; margin-bottom:12px; }
.popup-text { font-size:18px; font-weight:600; color:#5D3A1A; margin-bottom:8px; line-height:1.4; }
.popup-sub { font-size:14px; color:#8B6914; margin-bottom:20px; line-height:1.4; }
.overlay-box p { margin-bottom:16px; font-size:15px; color:#6B4226; line-height:1.5; }

.popup-success { border-color:#4CAF50; background:#F0FFF0; }
.popup-success .popup-text { color:#2E7D32; }
.popup-error { border-color:#E8943A; background:#FFF8EC; }

.btn-main {
  display:inline-block; padding:14px 40px;
  background:#E8943A; color:#FFF;
  font-size:18px; font-weight:700;
  border:none; border-radius:12px;
  cursor:pointer; touch-action:manipulation;
  box-shadow:0 4px 0 #C47520;
  transition: transform 0.1s, box-shadow 0.1s;
  margin-top:8px;
}
.btn-main:active { transform:translateY(2px); box-shadow:0 2px 0 #C47520; }

/* --- Drag ghost --- */
#drag-ghost {
  position:fixed; z-index:9999;
  pointer-events:none; opacity:0.9;
  filter:drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}
#drag-ghost.hidden { display:none; }

/* --- Drop zone feedback --- */
#basket-inside.drop-hover {
  background:rgba(255,200,50,0.12);
  border-radius:8px;
}

/* --- Animations --- */
@keyframes pop-in {
  0% { transform:scale(0.5); opacity:0; }
  70% { transform:scale(1.1); }
  100% { transform:scale(1); opacity:1; }
}
@keyframes banana-enter {
  0% { transform:scale(0.7) translateY(-25px); opacity:0.4; }
  60% { transform:scale(1.08) translateY(3px); opacity:0.95; }
  100% { transform:scale(1) translateY(0); opacity:1; }
}
@keyframes slot-pulse {
  0%,100% { transform:scale(1); }
  50% { transform:scale(1.08); }
}
@keyframes shake {
  0%,100% { transform:translateX(0); }
  20% { transform:translateX(-8px); }
  40% { transform:translateX(8px); }
  60% { transform:translateX(-6px); }
  80% { transform:translateX(6px); }
}

.banana-drag, .num-drag {
  animation: pop-in 0.3s ease backwards;
}

/* ============================================
   PORTRAIT MODE (phone < 650px width)
   Stacked: worksheet top, trays bottom
   ============================================ */
#game-container.portrait {
  flex-direction:column;
  width:430px;
  height:900px;
  gap:0;
}

.portrait #left-column,
.portrait #right-column {
  width:100%; height:auto;
  flex-shrink:0;
  padding:0 15px;
}

.portrait #center-column {
  flex:none;
}

.portrait #banana-tray {
  grid-template-columns: repeat(5, 55px);
  gap: 6px 10px;
}

.portrait #number-tray {
  grid-template-columns: repeat(5, 55px);
  gap: 6px 10px;
}

.portrait .confetti-monkey {
  width:90px; height:90px;
}