:root {
  --spacing-xxs: 0.125rem;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.375rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 4.25rem;
  --size-full: 100%;
  --size-overpanel: 20rem;
  --size-thumb: 1rem;
  --size-border-sm: 0.0625rem;
  --size-border-md: 0.125rem;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-primary: #0066ff;
  --color-secondary: rgba(255, 255, 255, 0.66);
  --color-highlight: rgba(255, 255, 255, 1);
  --color-border: rgba(0, 0, 0, 0.12);
  --color-box-bg: rgba(255, 0, 0, 0.12);
  --color-input-bg: rgba(255, 255, 0, 0.12);
  --color-input-focus: rgba(0, 0, 0, 1);
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --font-size-sm: 0.75rem;
  --font-size-md: 1rem;
  --font-weight-bold: 600;
  --font-weight-xbold: 900;
  --line-height-sm: 1.125rem;
  --line-height-md: 1.5rem;
  --transition-fast: 0.2s;
  --z-index-control-panel: 1000;
  --opacity-input: 0.7;
  --opacity-input-hover: 1;
}

body {
  margin: 0;
  padding: 0;
  width: var(--size-full);
  height: var(--size-full);
  overflow: auto;
}

.wrapper {
  display: flex;
  flex-direction: row;
  justify-content: stretch;
  align-items: stretch;
}

#container {
  position: relative;
  display: flex;
  max-width: 100vw;
  margin: 0 var(--size-overpanel) 0 0;
}

#document {
  width: 100%;
  display: block;
}

.box {
  position: absolute;
  background-color: var(--color-box-bg);
  border: var(--size-border-sm) solid red;
  box-sizing: border-box;
}

.box.selected {
  border: var(--size-border-md) solid black;
}

.ui-control-panel {
  position: fixed;
  top: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: var(--z-index-control-panel);
  background-color: var(--color-secondary);
  border-radius: var(--spacing-xs);
  padding: var(--spacing-xs);
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-sm);
  transition: background-color var(--transition-fast);
}

.ui-control-panel:hover {
  background-color: var(--color-highlight);
}

.ui-control-panel span {
  padding: var(--spacing-xs);
  display: none;
}

.ui-control-panel:hover span {
  display: flex;
}

#zoom-control {
  -webkit-appearance: none;
  width: var(--size-full);
  height: var(--spacing-xxs);
  background: #ddd;
  outline: none;
  border-radius: var(--spacing-xxs);
}

#zoom-control::-webkit-slider-thumb,
#zoom-control::-moz-range-thumb {
  width: var(--size-thumb);
  height: var(--size-thumb);
  background: var(--color-primary);
  cursor: pointer;
  border-radius: 50%;
}

#overpanel {
  position: fixed;
  right: 0;
  top: 0;
  width: var(--size-overpanel);
  height: var(--size-full);
  background-color: rgba(255, 255, 255, 0.33);
  backdrop-filter: blur(var(--spacing-sm));
  -webkit-backdrop-filter: blur(var(--spacing-sm));
  -moz-backdrop-filter: blur(var(--spacing-sm));
  border-left: var(--size-border-sm) solid var(--color-border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-fast) width var(--transition-fast);
}

#overpanel:hover {
  background-color: var(--color-highlight);
}

#overpanel.hidden {
  width: var(--spacing-xl);
}

#overpanel.hidden h2,
#overpanel.hidden form,
#overpanel.hidden footer {
  display: none;
}

#description-form {
  padding: var(--spacing-md);
}

.input-group {
  align-items: center;
  display: flex;
  flex-direction: row;
  margin-bottom: var(--spacing-md);
  position: relative;
}

.correction {
  background-color: var(--color-input-bg);
  color: inherit;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-md);
  padding: var(--spacing-sm) var(--spacing-md);
  width: calc(60% - var(--spacing-md) - var(--spacing-sm));
}

.correction:focus {
  border: var(--size-border-sm) solid var(--color-input-focus);
}

.error-category {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: calc(40% - var(--spacing-sm) - var(--spacing-md));
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-md);
  border: var(--size-border-sm) solid var(--color-border);
  border-left: none;
  border-radius: 0 var(--spacing-xs) var(--spacing-xs) 0;
  margin-bottom: 0;
  position: relative;
}

header,
footer {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  position: sticky;
  width: calc(100% - var(--spacing-lg));
  right: 0;
  left: auto;
  z-index: var(--z-index-control-panel);
}

header {
  top: 0;
  border-bottom: var(--size-border-sm) solid var(--color-border);
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-md);
}

footer {
  bottom: 0;
  border-top: var(--size-border-sm) solid var(--color-border);
}

h2 {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-md);
  outline: none;
  margin: 0;
}

input,
button {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  border: var(--size-border-sm) solid var(--color-border);
  font-family: var(--font-family);
  opacity: var(--opacity-input);
  transition: opacity var(--transition-fast), border var(--transition-fast);
}

input:hover,
button:hover {
  opacity: var(--opacity-input-hover);
}

#submit-button {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-xbold);
  line-height: var(--line-height-sm);
  padding: var(--spacing-md);
  width: 100%;
}

#toggle {
  height: 2.75rem;
  width: 2.75rem;
  text-indent: -9999rem;
  background-color: transparent;
  border: none;
  position: relative;
}

#toggle::before,
#toggle::after {
  content: '';
  position: absolute;
  width: 1rem;
  height: var(--spacing-xs);
  background-color: #bbb;
  transition: transform var(--transition-fast);
}

#toggle::before {
  top: 1rem;
  left: 0.75rem;
  transform: rotate(45deg);
}

#toggle::after {
  top: 1.5rem;
  left: 0.75rem;
  transform: rotate(-45deg);
}

#toggle[aria-expanded="false"]::before {
  transform: rotate(-45deg);
}

#toggle[aria-expanded="false"]::after {
  transform: rotate(45deg);
}