:root {
  --box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --primary-color: #f39c12;
  --primary-light-color: #f8c471;
  --income-color: #2ecc71;
  --expense-color: #c0392b;
  --background-color: #fff;
}

* {
  box-sizing: border-box;
}

body {
  background-color: #f7f7f7;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  color: #333;
}

h2 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-top: 0;
}

.container {
  margin: 30px auto;
  width: 350px;
  background-color: var(--background-color);
  box-shadow: var(--box-shadow);
  padding: 20px;
  border-radius: 8px;
}

h1 {
  letter-spacing: 1px;
  margin: 0;
}

h3 {
  border-bottom: 1px solid #bbb;
  padding-bottom: 10px;
  margin: 40px 0 10px;
}

h4 {
  margin: 0;
  text-transform: uppercase;
  color: var(--primary-color);
}

.inc-exp-container {
  background-color: var(--background-color);
  box-shadow: var(--box-shadow);
  padding: 20px;
  display: flex;
  justify-content: center;
  margin: 20px 0;
  border-radius: 8px;
}

.inc-exp-container > div {
  flex: 1;
  text-align: center;
}

.inc-exp-container > div:first-of-type {
  border-right: 1px solid #dedede;
}

.money {
  font-size: 1.2rem;
  letter-spacing: 1px;
  margin: 5px 0;
}

.money-plus {
  color: var(--income-color);
}

.money-minus {
  color: var(--expense-color);
}

label {
  display: inline-block;
  margin: 10px 0;
  color: var(--primary-color);
}

input[type="text"],
input[type="number"],
input[type="date"] {
  border: 1px solid #dedede;
  border-radius: 2px;
  display: block;
  font-size: 16px;
  padding: 10px;
  width: 100%;
  margin-bottom: 10px;
}

.btn {
  cursor: pointer;
  background-color: var(--primary-color);
  box-shadow: var(--box-shadow);
  color: #fff;
  border: 0;
  display: block;
  font-size: 16px;
  margin: 10px 0 30px;
  padding: 10px;
  width: 100%;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: var(--primary-light-color);
}

.btn:focus,
.delete-btn:focus {
  outline: 0;
}

.btn-income {
  background-color: var(--income-color);
}

.btn-expense {
  background-color: var(--expense-color);
}

.list {
  list-style-type: none;
  padding: 0;
  margin-bottom: 40px;
}

.list li {
  background-color: var(--background-color);
  box-shadow: var(--box-shadow);
  color: #333;
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 10px;
  margin: 10px 0;
  border-radius: 8px;
}

.list li.plus {
  border-right: 5px solid var(--income-color);
}

.list li.minus {
  border-right: 5px solid var(--expense-color);
}

.delete-btn {
  cursor: pointer;
  background-color: #e74c3c;
  border: 0;
  color: #fff;
  font-size: 20px;
  line-height: 20px;
  padding: 2px 5px;
  position: absolute;
  top: 50%;
  left: 0;
  transform: translate(-100%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  border-radius: 4px;
}

.list li:hover .delete-btn {
  opacity: 1;
}

.transaction-date {
  font-size: 0.8rem;
  color: #888;
  margin-left: 10px;
}

#spendingChart {
  max-width: 100%;
  margin: 20px auto;
}

/* Style for the button to open the chart in a new tab */
#open-chart {
  cursor: pointer;
  background-color: var(--primary-color);
  box-shadow: var(--box-shadow);
  color: #fff;
  border: 0;
  display: block;
  font-size: 16px;
  margin: 10px 0 30px;
  padding: 10px;
  width: 100%;
  border-radius: 4px;
  transition: background-color 0.3s ease;
}

#open-chart:hover {
  background-color: var(--primary-light-color);
}