*,
*::after,
*::before {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #888;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

a {
  color: inherit;
  text-decoration: none;
}

body {
  font-family: "Montserrat", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: #333;
  background-color: #fff;
}

.header {
  width: 100%;
  height: 8vh;
  background: #333;
  color: #fff;
  font: 2rem serif;
  text-align: center;
  box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.8);
}

.container {
  display: flex;
  height: 92vh;
}

nav {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  margin: 1rem;
  font-size: 1.2rem;
  color: #060;
}

.inp {
  padding: 5px;
  border: none;
  border-bottom: 2px solid #060;
  color: #060;
  font-size: 1rem;
}

#algorithm {
  padding: 5px 1rem;
  width: 100%;
  border-radius: 5px;
  background-color: #fff;
  font-size: 1rem;
}

.control-btn {
  padding: 5px 1rem;
  font-size: 1.2rem;
  border-radius: 5px;
  margin: 1rem;
  border: 2px solid #060;
  background-color: #fff;
  color: #060;
}

.control-btn:hover {
  background-color: #060;
  color: #fff;
}

.disabled {
  cursor: not-allowed;
  color: #999;
  border: 2px solid #999;
}

.disabled:hover {
  cursor: not-allowed;
  background: #f1f1f1;
  color: #999;
}
.dash {
  border-left: 5px solid #888;
  margin: 2rem 0;
}

.icon {
  max-height: 100px;
}

main {
  flex: 1 1 auto;
  overflow: auto;
}

.top {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 1rem;
}

#queue {
  display: flex;
  justify-content: center;
  align-items: center;
  border-top: 1px solid #bbb;
  border-bottom: 1px solid #bbb;
  padding: 1rem;
  flex-direction: row;
}

.queue-item {
  border: 2px solid;
  padding: 4px 1rem;
  border-radius: 5px;
  margin: 0 1rem;
}

.active {
  background-color: #060;
  color: #fff;
}

#log {
  font-size: 1.4rem;
}

.bottom {
  width: 100%;
  padding: 1rem;
  display: grid;
  grid-template-columns: 1fr 2fr;
}

.primary-container,
.secondary-container {
  display: flex;
  align-items: center;
  flex-direction: column;
  min-height: 200px;
  border: 2px solid #bbb;
  padding: 1rem;
}

#ram-refs {
  display: grid;
  width: 100%;
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
  padding: 1rem;
}

#hdd {
  display: grid;
  width: 100%;
  gap: 1rem;
  padding: 1rem;
}

.ref {
  border: 2px solid;
  border-radius: 5px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  height: 1.4rem;
  transform: scale(0);
  font-size: 1.1rem;
}

.ref-scale-up {
  transform: scale(1);
  transition: transform 0.5s ease-out;
}

.ref-scale-down {
  transform: scale(0);
  transition: transform 0.5s ease-out;
}

.results {
  padding: 1rem;
  visibility: hidden;
  display: flex;
  flex-direction: column;
}

table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  padding: 1rem;
  margin-bottom: 1rem;
}

td,
th {
  border: 1px solid #060;
  padding: 1rem;
  text-align: center;
}

/* alternate tr bg */
tr:nth-child(even) {
  background-color: #aaa;
}

#ref-save {
  align-self: flex-end;
  margin-right: 0;
}