:root {
  /* Color Palette - Earthy, Organic, Vibrant Market */
  --color-terracotta: #D96C4D;
  --color-clay: #8C4B3E;
  --color-sand: #F2E8DC;
  --color-moss: #4A593D;
  --color-wheat: #E9C46A;
  --color-ink: #264653;
  --color-white: #FFFFFF;
  
  /* Semantic Colors */
  --bg-village: #FDFBF7;
  --bg-market: #F2E8DC;
  --accent: var(--color-terracotta);
  --text-main: var(--color-ink);
  --text-muted: #5a7d8c;
  --border: rgba(38, 70, 83, 0.1);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 80px;
  
  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-soft: 0 10px 30px rgba(0,0,0,0.05);
  --shadow-bold: 0 20px 40px rgba(140, 75, 62, 0.15);
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: 'Fraunces', serif; /* Assuming a serif for character, fall back to system */
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-village);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  padding: var(--space-lg) clamp(1rem, 5vw, 4rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: white;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-terracotta);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Transfer Interface */
.transfer-grid {
  display: grid;
  grid-template-columns: 1fr 320px 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl) clamp(1rem, 5vw, 4rem);
  flex-grow: 1;
  align-items: start;
}

@media (max-width: 1024px) {
  .transfer-grid {
    grid-template-columns: 1fr;
  }
  .transfer-middle {
    order: 3;
  }
}

/* Source/Destination Panels */
.panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
  min-height: 600px;
  display: flex;
  flex-direction: column;
}

.panel-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--bg-market);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  color: var(--color-ink);
}

/* Inventory Items */
.inventory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-md);
}

.item-card {
  background: var(--bg-village);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.item-card:hover {
  border-color: var(--color-terracotta);
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.item-card.selected {
  background: var(--bg-market);
  border-color: var(--color-terracotta);
}

.item-card.selected::after {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 20px;
  height: 20px;
  background: var(--color-terracotta);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.placeholder-image {
  width: 100%;
  aspect-ratio: 1/1;
  background: rgba(38, 70, 83, 0.05);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.item-name {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.item-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Middle Control Column */
.transfer-middle {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-top: var(--space-2xl);
}

.cart-summary {
  background: var(--color-ink);
  color: white;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-bold);
}

.cart-title {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  opacity: 0.7;
  margin-bottom: var(--space-md);
}

.cart-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 1.1rem;
}

.transfer-button {
  background: var(--color-terracotta);
  color: white;
  border: none;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: background 0.2s;
  text-decoration: none;
}

.transfer-button:hover {
  background: var(--color-clay);
}

.transfer-button svg {
  transition: transform 0.3s ease;
}

.transfer-button:hover svg {
  transform: translateX(5px);
}

/* Empty States */
.empty-state {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text-muted);
  padding: var(--space-xl);
}

.placeholder-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-market);
  border-radius: 50%;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-clay);
}

/* Badges */
.badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-village { background: var(--bg-village); color: var(--color-moss); border: 1px solid var(--color-moss); }
.badge-market { background: var(--color-wheat); color: var(--color-clay); }

/* Feedback states */
.success-banner {
  background: var(--color-moss);
  color: white;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-align: center;
  margin-bottom: var(--space-lg);
  animation: success-pop 0.4s ease-out forwards;
}

@keyframes success-pop {
  0% { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* Utilities */
.text-center { text-align: center; }
.mt-xl { margin-top: var(--space-xl); }