style.css

:root {
  --color-grey: #999;
  --color-light-grey: #eee;
  --color-blue-grey: #789;
  --color-blue-grey-dark: #456;
  --color-blue-grey-bright: #abc;
  --color-blue-grey-very-bright: #def;
  --color-white: #fff;
  --color-black: #000;
  --color-red: #f00;
  --panel-width: 26rem;
  --panel-result-height: 28vh;
}

body {
  padding: 0;
  margin: 0;
  font-size: 12px;
  font-family: Helvetica, Arial, sans-serif;
  background-color: var(--color-white);
}

#binViewer {
  flex-grow: 1;
  z-index: 0;
  position: relative;
  top: var(--panel-result-height);
  height: calc(100% - var(--panel-result-height) - 5vh);
}

div.binpicture {
  height: 100%;
}

div.packwidget {
  height: 100%;
}

.viewport {
  display: flex;
  align-items: stretch;
  height: 100vh;
  width: 100vw;
}

.viewport > div {
  padding: 1rem;
}

.wrapper {
  overflow-y: auto;
  width: var(--panel-width);
  box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.group {
  display: flex;
  align-items: center;
}

.vertical-group {
  padding-bottom: 1.5rem;
}

.space-between {
  justify-content: space-between;
}

.entry-settings {
  padding: 1rem;
}

.entry-settings h4 {
  margin-left: -1rem;
}

button {
  background-color: var(--color-white);
  border: 2px solid var(--color-blue-grey);
  color: var(--color-blue-grey);
  margin: 1rem 0 1rem 0;
  line-height: 2rem;
  min-width: 2.5rem;
  font-weight: 700;
}

button.add-entry {
  margin: 0 0 0 0;
}


button:disabled {
  border-color: var(--color-grey);
  color: var(--color-grey); 
  pointer-events: none;
}

button:hover {
  cursor: pointer;
  border-color: var(--color-blue-grey-dark);
  color: var(--color-blue-grey-dark);
}

#optimization-results {
  display: none;
  flex-direction: row;
  justify-content: space-between;
  position: absolute;
  width: calc(100% - var(--panel-width) - 4rem);
  height: var(--panel-result-height);
  right: 0;
  background-color: transparent;
}

#optimization-results > div {
  background-color: var(--color-white);
  padding: 0% 2% 1% 2%;
  box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.4);
  overflow-y: auto;
}

#bin-switcher {
  justify-content: center;
}

#bin-switcher label {
  padding: 0 1.5rem 0 1.5rem;
  color: var(--color-blue-grey);
  font-weight: 700;
}

.bin-info {
  text-align: center;
  padding-bottom: 0;
}

#processing-indicator {
  display: none;
  text-align: center;
  height: 100vh;
  position: absolute;
  top: 0;
  margin-left: -1rem;
  width: calc(var(--panel-width) + 2rem);
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
}

#processing-indicator span {
  padding: 1rem;
  font-size: 1.25rem;
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--color-white);
}

h1,
h3 {
  margin-top: 1.5rem;
  margin-bottom: 0;
}

h4 {
  margin: 0.5rem;
}

h5 {
  color: var(--color-blue-grey);
  margin: 1rem 0 0.25rem 0;
  font-size: 1em;
}

h6 {
  margin: 0 0 0 -1rem;
  padding-bottom: 0.5rem;
  
}

input,
button,
select {
  font-size: 1rem;
}

input {
  color: var(--color-blue-grey);
  border: 0;
  border-bottom: 0.125rem solid var(--color-blue-grey);
  line-height: 1.5rem;
  padding: 0.25rem;
  margin: 0.25rem;
  text-align: right;
  width: 4rem;
}

input[type="number"] {
  padding-right: 0;
  padding-left: 0;
  width: 3.2rem;
}

input#bin-capacity {
  width: 4rem;
}

input#bin-number {
  width: 2rem;
}

input[type="radio"] {
  padding-right: 0;
  margin-right: 0;
  width: 1rem;
}

input:focus,
input:focus-within,
input:focus-visible,
input:active {
  border-color: var(--color-black);
  color: var(--color-black);
  outline: 0;
}

.group label {
  line-height: 1rem;
}

label {
  display: block;
  line-height: 2rem;
  margin: 0 0.5rem 0 0.5rem;
}

table {
  border-spacing: 0;
  width: 100%;
  margin: 0.5rem 0 0.5rem 0;
  border-collapse: collapse;
}

thead {
  padding: 5rem;
  color: var(--color-blue-grey);
  font-weight: 700;
}

thead tr {
  border-bottom: 2px solid  var(--color-blue-grey);
}

td {
  padding: 0.5rem;
  max-width: 10rem;
}

tbody tr {
  border-bottom: 1px solid  var(--color-blue-grey);
}

tbody tr:last-of-type {
  border: 0;
}

select {
  padding: 0.5rem;
  margin-top: 0.25rem;
  color: var(--color-blue-grey);
  border: 2px solid var(--color-blue-grey);
}

.loader,
.loader:before,
.loader:after {
  border-radius: 50%;
  width: 1rem;
  height: 1rem;
  animation-fill-mode: both;
  animation: loadAnimation 1s infinite ease-in-out;
}

.key-value {
  display: flex;
  justify-content: space-between;
  width: 16rem;
  padding: 0.5rem;
  border-bottom: 1px solid var(--color-blue-grey);
}

.key-value span[id] {
  font-weight: 700;
  color: var(--color-blue-grey);
}

.loader {
  color: var(--color-white);
  transform: translateZ(0);
  animation-delay: -0.2s;
  position: absolute;
}

.loader:before,
.loader:after {
  content: '';
  position: absolute;
  top: 0;
}

.loader:before {
  left: -1.5rem;
  animation-delay: -0.4s;
}

.loader:after {
  left: 1.5rem;
}

@keyframes loadAnimation {
  0%,
  80%,
  100% {
    box-shadow: 0 2.5em 0 -1.3em;
  }
  40% {
    box-shadow: 0 2.5em 0 0;
  }
}

#error-log {
  display: none;
  position: absolute;
  width: 50rem;
  top: 1rem;
  left: calc(var(--panel-width) + 3rem);
  background-color: var(--color-white);
  border: 2px solid var(--color-red);
  padding: 1rem;
  box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, 0.4);
}

#error-log pre {
  background-color: var(--color-light-grey);
  padding: 1rem;
  overflow: auto;
}