body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background: linear-gradient(to right, #ece9e6, #ffffff);
  color: #333;
}

.container {
  max-width: 700px;
  margin: 2rem auto;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

h1, h2 {
  text-align: center;
  color: #2d3e50;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 1rem;
}

input, select, button {
  padding: 10px;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  outline: none;
}

button {
  background-color: #0a74da;
  color: white;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #0556aa;
}

.danger-btn {
  background-color: #dc3545;
  color: #fff;
  border: none;
  margin-left: auto;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.link-btn {
  display: block;
  text-align: center;
  margin: 2rem auto 0;
  background: #0a74da;
  color: white;
  padding: 10px 15px;
  width: fit-content;
  border-radius: 8px;
  text-decoration: none;
}

ul#transactionList {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
}

ul#transactionList li {
  background: #f7f7f7;
  margin-bottom: 10px;
  padding: 10px 15px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-around;
  margin: 1.5rem 0;
}

.card {
  flex: 1 1 30%;
  padding: 15px;
  border-radius: 10px;
  font-weight: bold;
  color: white;
  text-align: center;
}

.green { background: #28a745; }
.red { background: #dc3545; }
.blue { background: #007bff; }

@media (max-width: 600px) {
  .summary {
    flex-direction: column;
  }

  .controls {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
}