body {
  font-family: system-ui, sans-serif;
  background: #f3f4f6;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 40px auto;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  padding: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 10px;
}

.bins {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.bin {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  background: #fafafa;
}

.progress {
  width: 100%;
  height: 16px;
  background: #eee;
  border-radius: 8px;
  overflow: hidden;
  margin: 5px 0 10px;
}

.bar {
  height: 100%;
  transition: width 0.5s ease;
}