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

body {
  font-family: sans-serif;
  background: #1a1a1a;
  color: #f0e6d3;
  padding: 20px;
}

h1 { margin-bottom: 20px; }
h2 { margin-bottom: 10px; }

main {
  display: flex;
  gap: 40px;
}

#resources-panel {
  min-width: 200px;
}

.resource {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 8px;
}

.resource-value {
  font-size: 1.4rem;
  font-weight: bold;
  color: #f5c542;
}

.resource-rate {
  font-size: 0.85rem;
  color: #aaa;
}

#click-btn {
  margin-top: 16px;
  padding: 10px 20px;
  background: #b8860b;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
}

#click-btn:hover {
  background: #d4a017;
}

.skill-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #2a2a2a;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 12px 16px;
  margin-bottom: 10px;
  min-width: 320px;
}

.skill-card h3 {
  margin-bottom: 4px;
  color: #f5c542;
}

.skill-description {
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 6px;
}

.skill-buy-btn {
  padding: 8px 14px;
  background: #b8860b;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  white-space: nowrap;
}

.skill-buy-btn:hover:not(:disabled) {
  background: #d4a017;
}

.skill-buy-btn:disabled {
  background: #444;
  color: #777;
  cursor: not-allowed;
}