body {
  font-family: sans-serif;
  max-width: 800px;
  margin: auto;
  padding: 20px;
}

td input {
  width: 80px;
}
select {
  padding: 5px;
  min-width: 60px;
}
button {
  padding: 5px 10px;
}
h2 {
  text-align: center;
}

.form-group {
  margin: 10px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

th, td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: center;
}

button {
  margin-right: 10px;
}
#loader {
  display: none;
}

.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: #2ecc71;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  font-size: 14px;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
}