studio/web_src/css/base.css

:root {
  /* fonts */
  --fonts-proportional: -apple-system, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial;
  --fonts-monospace: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace, var(--fonts-emoji);
  /* GitHub explicitly sets font names like: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Twemoji Mozilla";
  Actually "Twemoji Mozilla" emoji font is widely used by browsers like Firefox, Pale Moon, and it is more likely up-to-dated than the system emoji font.
  So not setting emoji font seems to be the best choice, here we just use a non-existing dummy font name and let browsers choose. */
  --fonts-emoji: -emoji-fallback;
  /* font weights - use between 400 and 600 for general purposes. Avoid 700 as it is perceived too bold */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-default: normal; /* line-height: use the default value as "modules/normalize.css" */
  --line-height-code: 20px; /* line-height for code, also used by the editor */
  /* images */
  --checkbox-mask-checked: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="9" viewBox="0 0 12 9"><path fill-rule="evenodd" d="M11.78.22a.75.75 0 0 1 0 1.061L4.52 8.541a.75.75 0 0 1-1.062 0L.202 5.285a.75.75 0 0 1 1.061-1.061l2.725 2.723L10.718.22a.75.75 0 0 1 1.062 0"/></svg>');
  --checkbox-mask-indeterminate: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="2" viewBox="0 0 10 2"><path fill-rule="evenodd" d="M0 1a1 1 0 0 1 1-1h8a1 1 0 1 1 0 2H1a1 1 0 0 1-1-1" clip-rule="evenodd"/></svg>');
  --octicon-alert-fill: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16"><path d="M6.457 1.047c.659-1.234 2.427-1.234 3.086 0l6.082 11.378A1.75 1.75 0 0 1 14.082 15H1.918a1.75 1.75 0 0 1-1.543-2.575ZM8 5a.75.75 0 0 0-.75.75v2.5a.75.75 0 0 0 1.5 0v-2.5A.75.75 0 0 0 8 5Zm1 6a1 1 0 1 0-2 0 1 1 0 0 0 2 0Z"/></svg>');
  --octicon-chevron-right: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16"><path d="M6.22 3.22a.75.75 0 0 1 1.06 0l4.25 4.25a.75.75 0 0 1 0 1.06l-4.25 4.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L9.94 8 6.22 4.28a.75.75 0 0 1 0-1.06Z"></path></svg>');
  --octicon-x: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16"><path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.75.75 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.75.75 0 0 1-.734-.215L8 9.06l-3.22 3.22a.75.75 0 0 1-1.042-.018.75.75 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06"/></svg>');
  --select-arrows: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" width="16" height="16"><path d="m4.074 9.427 3.396 3.396a.25.25 0 0 0 .354 0l3.396-3.396A.25.25 0 0 0 11.043 9H4.251a.25.25 0 0 0-.177.427m0-1.957L7.47 4.073a.25.25 0 0 1 .354 0L11.22 7.47a.25.25 0 0 1-.177.426H4.251a.25.25 0 0 1-.177-.426"/></svg>');
  /* other variables */
  --border-radius: 4px;
  --border-radius-medium: 6px;
  --border-radius-full: 99999px; /* TODO: use calc(infinity * 1px) */
  --opacity-disabled: 0.55;
  --height-loading: 16rem;
  --min-height-textarea: 132px; /* padding + 6 lines + border = calc(1.57142em + 6lh + 2px), but lh is not fully supported */
  --tab-size: 4;
  --checkbox-size: 14px; /* height and width of checkbox and radio inputs */
  --page-spacing: 16px; /* space between page elements */
  --page-margin-x: 32px; /* minimum space on left and right side of page */
  --page-space-bottom: 64px; /* space between last page element and footer */
  --transition-hover-fade: opacity 0.2s ease; /* fade transition for elements that show on hover */

  /* z-index */
  --z-index-modal: 1001; /* modal dialog */
  --z-index-toast: 1002; /* should be larger than modal */

  --font-size-label: 12px; /* font size of individual labels */

  --gap-inline: 0.25rem; /* gap for inline texts and elements, for example: the spaces for sentence with labels, button text, etc */
  --gap-block: 0.5rem; /* gap for element blocks, for example: spaces between buttons, menu image & title, header icon & title etc */

  --background-view-image: repeating-conic-gradient(var(--color-transparency-grid-dark) 0 25%, var(--color-transparency-grid-light) 0 50%) 0 0 / 18px 18px;
  --box-shadow-kbd: inset 0 -1px 0 var(--color-secondary);
}

@media (min-width: 768px) and (max-width: 1200px) {
  :root {
    --page-margin-x: 16px;
  }
}

@media (max-width: 767.98px) {
  :root {
    --page-margin-x: 8px;
  }
}

:root * {
  --fonts-regular: var(--fonts-override, var(--fonts-proportional)), "Noto Sans", "Liberation Sans", sans-serif, var(--fonts-emoji);
}

*, ::before, ::after {
  /* these are needed for tailwind borders to work because we do not load tailwind's base
     https://github.com/tailwindlabs/tailwindcss/blob/master/src/css/preflight.css */
  border-width: 0;
  border-style: solid;
  border-color: currentcolor;
}

html, body {
  height: 100%;
  font-size: 14px;
}

body {
  line-height: 20px;
  font-family: var(--fonts-regular);
  color: var(--color-text);
  background-color: var(--color-body);
  tab-size: var(--tab-size);
  display: flex;
  flex-direction: column;
  overflow-x: visible;
  overflow-wrap: break-word;
}

textarea {
  font-family: var(--fonts-regular);
}

pre,
code,
kbd,
samp {
  font-family: var(--fonts-monospace);
}

pre,
code,
samp,
.tw-font-mono {
  font-size: 0.95em; /* compensate for monospace fonts being usually slightly larger */
}

/* there are many <code> blocks in non-markup(.markup code) / non-code-diff(code.code-inner) containers, for example: translation strings, etc,
so we need to make <code> have default global styles, ".markup code" has its own styles and these styles sometimes conflict.
TODO: in the future, we should use `div` instead of `code` for `.code-inner` because it is a container for highlighted code line, then drop this ":not" patch */
code:where(:not(.code-inner)) {
  padding: 1px 4px;
  border-radius: var(--border-radius);
  background-color: var(--color-markup-code-inline);
}

b,
strong,
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-semibold);
}

h1,
h2,
h3,
h4,
h5 {
  line-height: 1.28571429;
  margin: calc(2rem - 0.1428571428571429em) 0 1rem;
  font-weight: var(--font-weight-medium);
  padding: 0;
}

h1 {
  min-height: 1rem;
  font-size: 2rem;
}

h2 {
  font-size: 1.71428571rem;
}

h3 {
  font-size: 1.28571429rem;
}

h4 {
  font-size: 1.07142857rem;
}

h5 {
  font-size: 1rem;
}

h1:first-child,
h2:first-child,
h3:first-child,
h4:first-child,
h5:first-child {
  margin-top: 0;
}

h1:last-child,
h2:last-child,
h3:last-child,
h4:last-child,
h5:last-child {
  margin-bottom: 0;
}

p {
  margin: 0 0 1em;
  line-height: 1.4285;
}

p:first-child {
  margin-top: 0;
}

p:last-child {
  margin-bottom: 0;
}

table {
  border-collapse: collapse;
}

ul {
  margin: 0.5em 0;
  padding: 0 0 0 1.5em;
}

button {
  cursor: pointer;
}

details summary {
  cursor: pointer;
}

progress {
  background: var(--color-secondary-dark-1);
  border-radius: var(--border-radius);
  border: none;
  overflow: hidden;
}

progress::-webkit-progress-bar {
  background: var(--color-secondary-dark-1);
}

progress::-webkit-progress-value {
  background-color: var(--color-accent);
}

progress::-moz-progress-bar {
  background-color: var(--color-accent);
}

* {
  caret-color: var(--color-caret);
}

::file-selector-button {
  border: 1px solid var(--color-light-border);
  color: var(--color-text-light);
  background: var(--color-light);
  border-radius: var(--border-radius);
}

::file-selector-button:hover {
  color: var(--color-text);
  background: var(--color-hover);
}

::selection,
relative-time::part(root)::selection {
  background: var(--color-primary-light-1);
  color: var(--color-white);
}

::placeholder {
  color: var(--color-placeholder-text) !important;
  opacity: 1 !important;
}

.unselectable,
.btn,
.button,
.lines-num,
.lines-commit,
.lines-commit .blame-info,
.ellipsis-button {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.container-disabled {
  opacity: var(--opacity-disabled);
  pointer-events: none;
  user-select: none;
}

a {
  color: var(--color-primary);
  cursor: pointer;
  text-decoration-line: none;
  text-decoration-skip-ink: all;
}

a:hover {
  text-decoration-line: underline;
}

/* a = always colored, underlined on hover */
/* a.muted = colored on hover, underlined on hover */
/* a.suppressed = never colored, underlined on hover */
/* a.silenced = never colored, never underlined */

a.muted,
a.suppressed,
a.silenced,
.muted-links a {
  color: inherit;
}

a:hover,
a.suppressed:hover,
a.muted:hover,
a.muted:hover [class*="color-text"],
.muted-links a:hover {
  color: var(--color-primary);
}

a.silenced:hover,
a.suppressed:hover {
  color: inherit;
}

a.silenced:hover {
  text-decoration-line: none;
}

a.label,
.ui.search .results a,
.ui .menu a,
.ui.cards a.card,
.issue-keyword a {
  text-decoration-line: none !important;
}

.native-select {
  position: relative;
}

.native-select > select {
  appearance: none; /* hide default triangle */
  padding: 6px 26px 6px 10px;
  border: 1px solid var(--color-light-border) !important;
  color: var(--color-text);
  border-radius: var(--border-radius);
}

/* ::before and ::after pseudo elements don't work on select elements,
   so we need to put it on the parent wrapper element. */
.native-select::after {
  position: absolute;
  pointer-events: none; /* make the click event can pass through the svg to the select element */
  top: 50%;
  transform: translateY(-50%);
  right: 5px;
  content: "";
  width: 16px;
  height: 16px;
  mask-size: cover;
  -webkit-mask-size: cover;
  mask-image: var(--select-arrows);
  -webkit-mask-image: var(--select-arrows);
  background: currentcolor;
}

.empty-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  text-align: center;
  text-wrap: balance;
}

.inline-code-block {
  padding: 2px 4px;
  border-radius: .24em;
  background-color: var(--color-label-bg);
}

.ui.menu .dropdown.item:hover,
.ui.menu a.item:hover,
.ui.menu details.item summary:hover {
  color: var(--color-text);
  background: var(--color-hover);
}

/* slightly more contrast for filters on issue list */
.ui.ui.menu .dropdown.item.disabled {
  color: var(--color-text-light-2);
}

/* styles from removed fomantic transition module */
.hidden.transition {
  visibility: hidden;
  display: none;
}
.visible.transition {
  display: block !important;
  visibility: visible !important;
}

.ui.comments .comment .metadata {
  color: var(--color-text-light-2);
}

img.ui.avatar,
.ui.avatar img,
.ui.avatar svg {
  border-radius: var(--border-radius);
  object-fit: contain;
  aspect-ratio: 1;
}

.full.height {
  flex-grow: 1;
  padding-bottom: var(--page-space-bottom);
}

.status-page-error {
  margin-top: max(45vh - 90px, 80px);
  margin-bottom: 80px;
}

.status-page-error-title {
  font-size: 48px;
  margin-bottom: 14px; /* some elements below may use tw-my-4 or tw-my-8, so use 14px as a minimal margin */
  line-height: initial;
  text-align: center;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-light-2);
}

/* add margin below .secondary nav when it is the first child */
.page-content > :first-child.secondary-nav {
  margin-bottom: 14px;
}

/* add margin to all pages when there is no .secondary.nav */
.page-content > :first-child:not(.secondary-nav) {
  margin-top: var(--page-spacing);
}
/* if .ui.grid is the first child the first grid-column has 'padding-top: 1rem' which we need
   to compensate here */
.page-content > :first-child.ui.grid {
  margin-top: calc(var(--page-spacing) - 1rem);
}

.ui .message.flash-message {
  text-align: center;
}

.ui .header > i + .content {
  padding-left: 0.75rem;
  vertical-align: middle;
}

.ui .sha.label {
  font-family: var(--fonts-monospace);
  font-size: 13px;
  font-weight: var(--font-weight-normal);
  flex-shrink: 0;
}

.ui .button.truncate {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: top;
  white-space: nowrap;
  margin-right: 6px;
}

.ui.status.buttons .svg {
  margin-right: 4px;
}

.ui.inline.delete-button {
  padding: 8px 15px;
  font-weight: var(--font-weight-normal);
}

.ui .migrate {
  color: var(--color-text-light-2) !important;
}

.ui .migrate a {
  color: var(--color-text-light) !important;
}

.ui .migrate a:hover {
  color: var(--color-text) !important;
}

.ui .border {
  border: 1px solid;
}

.user-menu > .item {
  width: 100%;
  border-radius: 0 !important;
}

.color-preview {
  display: inline-block;
  margin-left: 0.4em;
  height: 0.67em;
  width: 0.67em;
  border-radius: var(--border-radius);
}

.attention-icon {
  margin: 2px 6px 0 0;
}

blockquote.attention-note {
  border-left-color: var(--color-blue-dark-1);
}
strong.attention-note, svg.attention-note {
  color: var(--color-blue-dark-1);
}

blockquote.attention-tip {
  border-left-color: var(--color-success-text);
}
strong.attention-tip, svg.attention-tip {
  color: var(--color-success-text);
}

blockquote.attention-important {
  border-left-color: var(--color-violet-dark-1);
}
strong.attention-important, svg.attention-important {
  color: var(--color-violet-dark-1);
}

blockquote.attention-warning {
  border-left-color: var(--color-warning-text);
}
strong.attention-warning, svg.attention-warning {
  color: var(--color-warning-text);
}

blockquote.attention-caution {
  border-left-color: var(--color-red-dark-1);
}
strong.attention-caution, svg.attention-caution {
  color: var(--color-red-dark-1);
}

/* FIXME: this is a longstanding dirty patch since 2015, it only makes the pages more messy and shouldn't be used */
.center {
  text-align: center;
}

overflow-menu {
  border-bottom: 1px solid var(--color-secondary) !important;
  display: flex;
  position: relative;
}

overflow-menu .overflow-menu-popup {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 100;
  background-color: var(--color-menu);
  color: var(--color-text);
  border: 1px solid var(--color-secondary);
  border-radius: var(--border-radius);
  box-shadow: 0 6px 18px var(--color-shadow);
  padding: 4px 0;
}

overflow-menu .overflow-menu-popup::before,
overflow-menu .overflow-menu-popup::after {
  content: "";
  position: absolute;
  right: 10px;
  border: 8px solid transparent;
}

overflow-menu .overflow-menu-popup::before {
  bottom: 100%;
  border-bottom-color: var(--color-secondary);
}

overflow-menu .overflow-menu-popup::after {
  bottom: calc(100% - 1px);
  border-bottom-color: var(--color-menu);
}

overflow-menu .overflow-menu-popup > .item {
  display: flex;
  align-items: center;
  padding: 9px 18px !important;
  color: var(--color-text) !important;
  background: transparent !important;
  text-decoration: none;
  gap: 10px;
  width: 100%;
}

overflow-menu .overflow-menu-popup > .item:hover,
overflow-menu .overflow-menu-popup > .item:focus {
  background: var(--color-hover) !important;
}

overflow-menu .overflow-menu-popup > .item.active {
  background: var(--color-active) !important;
}

overflow-menu .overflow-menu-items {
  display: flex;
  flex: 1;
}

overflow-menu .overflow-menu-items .item {
  margin-bottom: 0 !important; /* reset fomantic's margin, because the active menu has special bottom border */
}

overflow-menu .overflow-menu-items .item-flex-space {
  flex: 1;
}

overflow-menu .overflow-menu-button {
  background: transparent;
  border: none;
  color: inherit;
  text-align: center;
  width: 32px;
  padding: 0;
}

/* match the styles of ".ui.secondary.pointing.menu .active.item" */
overflow-menu.ui.secondary.pointing.menu .overflow-menu-button.active {
  padding: 2px 0 0;
  border-bottom: 2px solid currentcolor;
  background-color: transparent;
  font-weight: var(--font-weight-medium);
}

overflow-menu .overflow-menu-button:hover {
  color: var(--color-text-dark);
}

overflow-menu .ui.label {
  margin-left: 7px !important; /* save some space */
}

.activity-bar-graph {
  background-color: var(--color-primary);
  color: var(--color-primary-contrast);
}

.activity-bar-graph-alt {
  color: var(--color-primary-contrast);
}

.oauth2-authorize-application-box {
  margin-top: 3em !important;
}

.lines-blame-btn {
  padding: 0 0 0 5px;
  display: flex;
  justify-content: center;
}

.lines-num {
  padding: 0 8px;
  text-align: right !important;
  color: var(--color-text-light-2);
  width: 1%; /* this apparently needs to be a percentage so that code column stretches in diffs */
  min-width: 72px;
  white-space: nowrap;
}

.code-diff .lines-num {
  min-width: 50px;
}

.lines-num span::after {
  content: attr(data-line-number);
  line-height: var(--line-height-code) !important;
  padding: 0 10px;
  display: block;
}

.lines-type-marker {
  vertical-align: top;
  white-space: nowrap;
}

.lines-num,
.lines-escape,
.lines-code {
  font-size: 12px;
  font-family: var(--fonts-monospace);
  line-height: var(--line-height-code);
  padding-top: 0;
  padding-bottom: 0;
  vertical-align: top;
}

.lines-num pre,
.lines-code pre,
.lines-num ol,
.lines-code ol {
  background-color: inherit;
  margin: 0;
  padding: 0 !important;
}

.lines-num pre li,
.lines-code pre li,
.lines-num ol li,
.lines-code ol li {
  display: block;
  width: calc(100% - 1ch);
  padding-left: 1ch;
}

.lines-escape {
  width: 0;
  white-space: nowrap;
  padding: 0;
}

.lines-code {
  padding-left: 5px;
}

.code-inner {
  font: 12px var(--fonts-monospace);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: inherit; /* needed for inline code preview in markup */
}

.blame .code-inner {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.lines-commit {
  vertical-align: top;
  color: var(--color-text-light-1);
  padding: 0 !important;
  width: 1%;
}

.lines-commit .blame-info {
  width: min(26vw, 300px);
  display: block;
  padding: 0 0 0 6px;
  line-height: var(--line-height-code);
  box-sizing: content-box;
}

.lines-commit .blame-info .blame-data {
  display: flex;
  font-family: var(--fonts-regular);
}

.lines-commit .blame-info .blame-data .blame-message {
  flex-grow: 2;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.lines-commit .blame-info .blame-data .blame-time,
.lines-commit .blame-info .blame-data .blame-avatar {
  flex-shrink: 0;
}

.blame-avatar {
  display: flex;
  align-items: center;
  margin-right: 6px;
}

tr.top-line-blame {
  border-top: 1px solid var(--color-secondary);
}

tr.top-line-blame:first-of-type {
  border-top: none; /* merge code lines belonging to the same commit into one block */
}

.migrate .svg.gitea-git {
  color: var(--color-git);
}

.color-icon {
  display: inline-block;
  border-radius: var(--border-radius-full);
  height: 14px;
  width: 14px;
}

.rss-icon {
  display: inline-flex;
  color: var(--color-text-light-1);
}

table th[data-sortt-asc]:hover,
table th[data-sortt-desc]:hover {
  background: var(--color-hover) !important;
  cursor: pointer !important;
}

table th[data-sortt-asc] .svg,
table th[data-sortt-desc] .svg {
  margin-left: 0.25rem;
}

/* for "image" emojis like ":git:"  ":gitea:" and ":github:" (see CUSTOM_EMOJIS config option) */
.emoji img {
  border-width: 0 !important;
  margin: 0 !important;
  width: 1em !important;
  height: 1em !important;
  vertical-align: -0.15em;
}

.ui.tabular.menu .item,
.ui.secondary.pointing.menu .item {
  padding: 11.55px 12px !important; /* match .dashboard-navbar in height */
  color: var(--color-text-light-2);
}

.ui.tabular.menu .item:hover,
.ui.secondary.pointing.menu a.item:hover {
  color: var(--color-text);
}

.ui.tabular.menu .active.item,
.ui.secondary.pointing.menu .active.item,
.resize-for-semibold::before {
  font-weight: var(--font-weight-semibold);
}

.resize-for-semibold::before {
  content: attr(data-text);
  visibility: hidden;
  display: block;
  height: 0;
}

.flash-error details code,
.flash-warning details code {
  display: block;
  text-align: left;
}

.ui.button.ellipsis-button {
  padding: 0 5px 8px;
  display: inline-block;
  font-weight: var(--font-weight-semibold);
  line-height: 8px;
  vertical-align: middle;
  min-height: 0;
}

.btn,
.ui.ui.dropdown,
.flex-text-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--gap-inline);
  vertical-align: middle;
  min-width: 0; /* make ellipsis work */
}

.ui.ui.labeled.button {
  gap: 0;
  align-items: stretch;
}

.ui.list.flex-items-block > .item,
.ui.vertical.menu.flex-items-block > .item,
.ui.form .field > label.flex-text-block, /* override fomantic "block" style */
.flex-items-block > .item,
.flex-text-block {
  display: flex;
  align-items: center;
  gap: var(--gap-block);
  min-width: 0;
}

.flex-text-block > .ui.button,
.flex-text-inline > .ui.button {
  margin: 0; /* fomantic buttons have default margin, when we use them in a flex container with gap, we do not need these margins */
}

.svg.octicon-file-directory-fill,
.svg.octicon-file-directory-open-fill,
.svg.octicon-file-submodule {
  color: var(--color-primary);
}

.svg.octicon-file,
.svg.octicon-file-symlink-file,
.svg.octicon-file-directory-symlink {
  color: var(--color-secondary-dark-7);
}