:root {
  --primary: #108b24;
  --secondary: #0e5d1b;
  --red: #dc3545;
  --red-alt: #c01616;
  --bg-color: #eee;
  --fg-color: #ddd;
  --font-color: #000;
  color-scheme: light dark;
}

*,
::before,
::after {
  margin: 0;
}

body {
  width: 100vw;
  background-color: var(--bg-color);
  font-family: Afacad, Helvetica, Arial, sans-serif;
  overflow: hidden visible;
}

button,
input {
  font-family: Afacad, Helvetica, Arial, sans-serif;
}

::-webkit-scrollbar {
  width: 5px;
  background-color: var(--bg-color);
}

::-webkit-scrollbar-thumb {
  border-radius: 2px;
  background-color: var(--primary);
}

header {
  padding: 0.75rem 1rem;
  background-color: var(--primary);
  color: white;

  h1 {
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    column-gap: 0.5rem;
  }
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  background-color: var(--bg-color);
}

.item {
  display: flex;
  align-items: center;
  padding: 10px;
  border-bottom: 1px solid var(--font-color);
}

.item:last-child {
  border-bottom: none;
}

.item-details {
  flex-grow: 1;
}

.quantity {
  padding: 5px;
  margin: 0 10px;
}

.actions {
  display: flex;
  gap: 10px;
}

button {
  padding: 0.75rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  background-color: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  gap: 5px;
}

button:hover {
  background-color: var(--secondary);
}

button:focus {
  outline: 3px solid #80bdff;
  outline-offset: 2px;
}

button.remove {
  background-color: var(--red);
}

button.remove:hover {
  background-color: var(--red-alt);
}

#currentSession {
  max-width: 768px;
  margin: auto;
}

.add-item-form {
  display: flex;
  justify-content: space-around;
  margin-bottom: 1rem;
  padding: 4px;
  padding-right: 0;
  column-gap: clamp(0.2rem, 2vw, 3rem);
}

#sessionTitle {
  width: 100%;
  padding: 2px 0;
  text-align: center;
  text-transform: capitalize;
  font-size: 1.35rem;
  box-sizing: border-box;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 2px 8px;
  border: none;
  border-bottom: 2px solid var(--primary);
  background-color: var(--bg-color);
  font-size: 1.25rem;
  box-sizing: border-box;
}

input[placeholder="Price"] {
  max-width: 4rem;
  text-align: end;
}

input[placeholder="Price"]::placeholder {
  text-align: start;
}

input[placeholder="Quantity"],
.quantity {
  max-width: 2.4rem;
  text-align: end;
}

input[id="itemDiscount"],
.quantity {
  max-width: 3rem;
  padding: 0 2px;
  text-align: end;
}

input:focus {
  outline: 3px solid var(--danger-color);
  outline-offset: 2px;
}

.aggregate-wrapper {
  height: 2.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  border-top: 2px solid var(--secondary);
}

.aggregate {
  font-size: 1.2em;
  font-weight: bold;
}

#endSession {
  margin: 1rem auto;
}

.history-section {
  display: flex;
  flex-direction: column;
  row-gap: 1rem;
  padding-top: 1rem;
  border-top: 2px solid var(--secondary);
  user-select: contain;
  -webkit-user-select: contain;
}

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

h2 {
  display: flex;
  align-items: center;
  column-gap: 0.5rem;
  cursor: pointer;
}

#sessionHistory {
  display: flex;
  flex-direction: column;
  row-gap: 10px;
}

.session {
  padding: 15px;
  background-color: var(--fg-color);
  border-radius: 8px;
  cursor: pointer;
}

.session:hover {
  background-color: var(--fg-color);
  filter: brightness(0.85);
}

.session-details {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.fa-shopping-bag,
.fa-history {
  color: var(--primary);
}

.fa-angle-down {
  color: var(--primary);
  font-size: 1rem;
  transition: transform 400ms;
}

.rotate {
  transform: rotate(180deg);
}

[role="alert"] {
  padding: 10px;
  margin: 10px 0;
  border-radius: 4px;
  background-color: #f8d7da;
  color: #721c24;
}

footer {
  background-color: var(--secondary);
  text-align: center;
}

@media screen and (max-width: 770px) {
  .container {
    padding: 1.25rem;
  }

  /* Removing scrollbar */
  ::-webkit-scrollbar {
    width: 0;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #1e1e1e;
    --fg-color: #2d2d2d;
    --font-color: #fff;
  }
}