:root {
  color-scheme: light dark;
  --bg-color: #ffffff;
  --text-color: #000000;
  --surface-color: #ffffff;
  --border-color: #767676;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --surface-color: #242424;
    --border-color: #a6a6a6;
  }
}
body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease-in;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 1rem;
  width: 100%;
}

.tabContainer {
  display: flex;
  gap: 5px;
  border-bottom: 1px solid var(--border-color);
}

.tabButton {
  background-color: transparent;
  border: 1px solid transparent;
  border-bottom-color: var(--border-color);
  color: var(--text-color);
  cursor: pointer;
  padding: 8px 16px;
}

.tabButton:hover,
.tabButton:focus-visible {
  background-color: var(--surface-color);
  border-color: var(--border-color);
  outline: none;
}

.tabButton.active {
  background-color: var(--surface-color);
  border-color: var(--border-color);
  border-bottom-color: var(--surface-color);
  margin-bottom: -1px;
}

#profileForm {
  width: 150px;
  display: flex;
}

#profileForm div {
  padding: 5px;
}

#gradesForm {
  display: flex;
  flex-direction: column;
  width: fit-content;
}

#gradesGrid {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.gradesHeader,
.gradeRow {
  display: grid;
  grid-template-columns: 150px 300px 75px 100px;
  align-items: center;
  gap: 5px;
}

.gradesHeader {
  font-weight: 700;
}

.gradesHeader span:first-child {
  grid-column: 1 / 3;
}

.gradesHeader span:last-child {
  grid-column: 4;
}

.gradeRow label {
  padding-left: 5px;
}

input {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  width: 100%;
  box-sizing: border-box;
  color: var(--text-color);
  margin-top: 5px;
}

#surname {
  width: 150px;
}

#firstName {
  width: 150px;
}

#middleInitial {
  width: 90px;
}

#submit {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  border-radius: 10px;
  margin: 10px;
  padding: 5px 10px;
}