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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: 'Heebo', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #ffffff;
}

/* ===== Game Container — content flows from top, no stretching ===== */
#game-container {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  background: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}

/* ===== Header ===== */
#game-header {
  background: linear-gradient(135deg, #4CAF50, #66BB6A);
  padding: 1.2vmin 3vmin;
  text-align: center;
  width: 100%;
  flex-shrink: 0;
}

#game-title {
  color: white;
  font-size: min(3.5vmin, 2.2rem);
  font-weight: 800;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* ===== Content wrapper — shelf area + bottom items, no gap ===== */
#game-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5vmin;
  padding: 1.5vmin 2vmin 0;
  direction: ltr;
}

/* ===== Side Columns ===== */
.items-column {
  display: flex;
  flex-direction: column;
  gap: 1.5vmin;
  align-items: center;
  min-width: 12vmin;
}

/* ===== Shelf + Bottom group ===== */
#shelf-and-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

/* ===== Shelf Wrapper ===== */
#shelf-wrapper {
  position: relative;
  flex-shrink: 0;
}

#shelf-image {
  display: block;
  width: min(60vmin, 62vh);
  height: auto;
  pointer-events: none;
  user-select: none;
}

/* ===== Drop rows overlaid on shelf ===== */
#shelf-drop-rows {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 0.8vmin 0;
}

.shelf-row {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 0.5vmin 1vmin;
  transition: background 0.2s;
  border-radius: 0.5vmin;
}

.shelf-row.drop-hover {
  background: rgba(76, 175, 80, 0.2);
}

.shelf-row.drop-wrong {
  animation: shake 0.5s ease-in-out;
}

.shelf-items-area {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.8vmin;
  flex-wrap: wrap;
  min-height: 5vmin;
}

.shelf-items-area .sorted-item {
  width: 8vmin;
  height: 8vmin;
  animation: popIn 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.shelf-items-area .sorted-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ===== Category Card — inside each shelf row ===== */
.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3vmin;
  padding: 0.5vmin 0.7vmin 0.7vmin;
  background: rgba(255, 255, 255, 0.92);
  border: 0.25vmin solid #e0e0e0;
  border-radius: 1vmin;
  width: 14vmin;
  flex-shrink: 0;
  text-align: center;
  position: relative;
}

.category-card .category-preview {
  width: 12vmin;
  height: auto;
  border-radius: 0.5vmin;
  object-fit: contain;
}

.category-card .category-label {
  font-size: min(1.5vmin, 0.9rem);
  font-weight: 800;
  color: #333;
  direction: rtl;
}

.category-card .checkmark-icon {
  width: 4vmin;
  height: 4vmin;
  opacity: 0;
  transform: scale(0);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
  position: absolute;
  top: -1.5vmin;
  right: -1.5vmin;
}

.category-card .checkmark-icon.visible {
  opacity: 1;
  transform: scale(1);
}

/* ===== Bottom Items — pressed right under the shelf ===== */
#items-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.2vmin;
  flex-wrap: nowrap;
  padding: 0.3vmin 0 0.5vmin;
  direction: ltr;
  flex-shrink: 0;
  /* Match the shelf's horizontal position by using same margins as game-area centering */
  margin-left: auto;
  margin-right: auto;
}

/* ===== Draggable Items ===== */
.drag-item {
  width: 13vmin;
  height: 13vmin;
  cursor: grab;
  touch-action: none;
  user-select: none;
  transition: transform 0.2s;
  z-index: 10;
  position: relative;
}

.drag-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
}

.drag-item:hover {
  transform: scale(1.08);
}

.drag-item.dragging {
  cursor: grabbing;
  z-index: 1000;
  transform: scale(1.15) rotate(3deg);
  opacity: 0.9;
}

.drag-item.snap-back {
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.drag-item.sorted {
  pointer-events: none;
  transition: all 0.3s ease;
  opacity: 0;
  transform: scale(0.3);
}

/* ===== Decorative Items (farmer) ===== */
.decor-item {
  width: 30vmin;
  height: 30vmin;
  user-select: none;
  align-self: center;
  flex-shrink: 0;
}

.decor-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ===== Game Complete Overlay ===== */
#game-complete-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  backdrop-filter: blur(4px);
  animation: fadeIn 0.5s ease;
}

#game-complete-overlay.hidden { display: none; }

#game-complete-card {
  background: white;
  border-radius: 3vmin;
  padding: 6vmin 8vmin;
  text-align: center;
  box-shadow: 0 2vmin 8vmin rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
  animation: slideUp 0.5s ease;
  max-width: 90vw;
}

#success-title {
  font-size: min(8vmin, 4.5rem);
  color: #4CAF50;
  margin-bottom: 2vmin;
  text-shadow: 0.4vmin 0.4vmin 0.8vmin rgba(0, 0, 0, 0.15);
  animation: successPulse 1.5s ease-in-out infinite;
}

#play-again-btn {
  margin-top: 2vmin;
  padding: 1.8vmin 5vmin;
  font-size: min(2vmin, 1.2rem);
  font-weight: 700;
  color: white;
  background: linear-gradient(135deg, #4CAF50, #45a049);
  border: none;
  border-radius: 1.5vmin;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0.5vmin 1.5vmin rgba(76, 175, 80, 0.4);
  font-family: 'Heebo', sans-serif;
}

#play-again-btn:hover {
  transform: scale(1.05);
}

/* ===== Confetti ===== */
#confetti-container {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.confetti {
  position: absolute;
  width: 1.2vmin; height: 1.2vmin;
  border-radius: 0.3vmin;
  top: -1.5vmin;
  animation: confettiFall 3s ease-in forwards;
}

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(5vmin); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-1vmin); }
  30% { transform: translateX(1vmin); }
  45% { transform: translateX(-0.8vmin); }
  60% { transform: translateX(0.8vmin); }
  75% { transform: translateX(-0.4vmin); }
  90% { transform: translateX(0.4vmin); }
}
@keyframes successPulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(60vmin) rotate(720deg); opacity: 0; }
}
@keyframes popIn { 0% { transform: scale(0); } 70% { transform: scale(1.2); } 100% { transform: scale(1); } }