/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

/* Variables */
:root {
  --text-color: hsl(0 0% 13%);
  --header-color: hsl(0 0% 13%);
  --secondary-color: hsl(0 0% 20%);
  --subtitle-color: hsl(0 0% 27%);
  --minor-color: hsl(0 0% 40%);
  --divider-color: hsl(0 0% 60%);
  --hr-color: hsl(0 0% 67%);
  --body-background: fixed
      url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI1NiIgaGVpZ2h0PSIxMDAiPgo8cGF0aCBkPSJNMjggNjZMMCA1MEwwIDE2TDI4IDBMNTYgMTZMNTYgNTBMMjggNjZMMjggMTAwIiBmaWxsPSJub25lIiBzdHJva2U9IiNlZmVmZWYiIHN0cm9rZS13aWR0aD0iMiI+PC9wYXRoPgo8cGF0aCBkPSJNMjggMEwyOCAzNEwwIDUwTDAgODRMMjggMTAwTDU2IDg0TDU2IDUwTDI4IDM0IiBmaWxsPSJub25lIiBzdHJva2U9IiNlZmVmZWYiIHN0cm9rZS13aWR0aD0iMiI+PC9wYXRoPgo8L3N2Zz4="),
    linear-gradient(hsl(0 0% 95%), hsl(0 0% 95%));
  --page-container-color: hsl(0 0% 99%);
  --page-container-box-shadow: 0 5px 20px hsl(217 100% 5% / 20%);
  --item-color: hsl(0 0% 99.5%);
  --item-disabled-color: hsl(0 0% 97%);
  --button-3d-shadow: hsl(0 0% 0% / 10%);
  --shortcut-button-color: hsl(175 60% 48%);
  --shortcut-button-focus-color: hsl(175 60% 75%);
  --main-button-color: hsl(189 44% 48%);
  --main-active-button-color: hsl(189 44% 57%);
  --main-button-focus-color: hsl(189 44% 75%);
  --main-box-shadow: 0 2px 10px hsl(217 100% 5% / 20%);
  --main-button-focus-box-shadow: 0 4px 10px hsl(217 100% 5% / 20%);
  --secondary-button-color: hsl(183 33% 63%);
  --secondary-active-button-color: hsl(183 44% 48%);
  --secondary-button-focus-color: hsl(183 44% 75%);
  --input-button-color: hsl(177 44% 48%);
  --input-button-focus-color: hsl(177 44% 75%);
  --input-layer-color: hsl(0 0% 100%);
  --input-focus-color: hsl(0 0% 80%);
  --dialog-nav-color: hsl(201 33% 48%);
  --dialog-nav-focus-color: hsl(201 33% 66%);
  --secondary-box-shadow: 0 2px 5px hsl(217 100% 5% / 20%);
  --secondary-hover-box-shadow: 0 3px 5px hsl(217 100% 5% / 20%);
  --minor-box-shadow: 0 2px 5px hsl(217 100% 5% / 10%);
  --button-text-shadow: 0 1px 2px hsl(0 0% 0% / 40%);
  --main-text-shadow: 0 2px 3px hsl(0 0% 0% / 40%);
  --placeholder-color: hsl(0 0% 0% / 40%);
  --placeholder-disabled-color: hsl(0 0% 0% / 20%);
  --range-grid-color: hsl(0 0% 0% / 10%);
  --range-label-hover-color: hsl(0 0% 0% / 30%);
  --input-slider-color: hsl(217 15% 90%);
  --input-accent-color: hsl(210 70% 67%);
  --input-handle-color: hsl(210 40% 50%);
  --error-color: hsl(0 80% 50%);
  --error-hover-color: hsl(0 80% 65%);
  --section-color: hsl(163 47% 50%);
  --link-color: hsl(203 80% 50%);
  --link-blend-color: hsl(203 80% 15%);
  --link-hover-color: hsl(203 80% 59%);
  --text-button-color: hsl(177 63% 43%);
  --text-button-hover-color: hsl(177 63% 48%);
  --streak-color: hsl(50 60% 55%);
  --correct-color: hsl(150 50% 50%);
  --retry-color: hsl(190 50% 50%);
  --blank-color: hsl(270 50% 60%);
  --wrong-color: hsl(15 75% 60%);
  --button-spacing: max(1.4%, 0.6rem);
  --vertical-item-spacing: 0.6rem;
  --horizontal-item-spacing: 0.6rem;
} /**/

/* Container styles and sizing */
html {
  overflow-y: scroll;
}

body {
  color: var(--text-color);
  font: 1.1rem / 1.45 "Latin Modern Sans", sans-serif;
  background: var(--body-background);
}

.page-container {
  position: relative;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: 1300px;
  min-height: 100vh;
  margin: auto;
  padding: 0 5rem;
  background: var(--page-container-color);
  box-shadow: var(--page-container-box-shadow);
} /**/

/* Dialog nav */
.dialog-nav {
  position: absolute;
  top: 0;
  left: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-left: 1rem;
}

.dialog-icon {
  width: 50px;
  height: 50px;
  color: var(--dialog-nav-color);
  background: var(--page-container-color);
  border: none;
  border-radius: 2px;
  box-shadow: var(--main-box-shadow);
  cursor: pointer;
}

.dialog-icon:focus {
  outline: 2px solid var(--dialog-nav-focus-color);
} /**/

/* Main header */
header {
  margin-bottom: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hr-color);
}

.header {
  margin-bottom: 0;
  color: var(--header-color);
  font: bold 2em "Computer Modern Bright", sans-serif;
}

.header :is(a, a:hover) {
  color: inherit;
}

.logo {
  position: relative;
  top: 2px;
}

.subtitle {
  margin-top: 0;
  margin-bottom: 0;
  color: var(--subtitle-color);
  font: italic 1.4em "Computer Modern Bright", sans-serif;
}

.intro-header {
  margin-top: 0.6rem;
  color: var(--minor-color);
  font: normal 1.1em "Computer Modern Bright", sans-serif;
}

.header-link {
  cursor: pointer;
} /**/

/* Big top buttons */
.button-container {
  display: flex;
  gap: var(--vertical-item-spacing) var(--button-spacing);
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.button {
  display: flex;
  flex: 1;
  flex-basis: calc((40% - 5 / 2 * var(--button-spacing)) / 3);
  align-items: center;
  justify-content: center;
  padding: 0.7rem 0.6rem 0.5rem;
  color: white;
  font: bold 1.1em "Computer Modern Bright", sans-serif;
  text-shadow: var(--button-text-shadow);
  background: var(--main-button-color);
  border: none;
  border-bottom: 3px solid var(--button-3d-shadow);
  box-shadow: var(--main-box-shadow);
  transition: all 0.1s;
}

.wide-button {
  flex-basis: calc((60% - 3 / 2 * var(--button-spacing)) / 2);
}

.button-icon {
  display: none;
}

.button:hover {
  box-shadow: var(--main-button-focus-box-shadow);
  transform: translateY(-2px);
  cursor: pointer;
}

.button:focus {
  outline: 2px solid var(--main-button-focus-color);
}

.button-active {
  background: var(--main-active-button-color);
} /**/

/* Secondary buttons */
#secondary-button-container {
  justify-content: center;
  margin-bottom: 1rem;
}

.secondary-button {
  flex: 0 0 max(8rem, 15%);
  padding: 0.5rem 0.6rem 0.4rem;
  color: var(--subtitle-color);
  font: bold 1em "Computer Modern Bright", sans-serif;
  text-transform: uppercase;
  text-shadow: none;
  background: none;
  border: none;
  box-shadow: inset 0 -2px 0 var(--secondary-button-color);
}

.secondary-spacer {
  flex: 1;
  box-shadow: inset 0 -2px 0 var(--secondary-button-color);
}

.secondary-button:hover {
  box-shadow: inset 0 -6px 0 var(--secondary-button-color);
  transform: none;
}

.secondary-button:focus {
  outline: 2px solid var(--secondary-button-focus-color);
}

.secondary-button-active {
  box-shadow: inset 0 -6px 0 var(--secondary-active-button-color);
} /**/

/* Input buttons */
.input-button {
  padding: 0.3rem var(--horizontal-item-spacing);
  color: white;
  font: bold 1em "Computer Modern Bright", sans-serif;
  text-shadow: var(--button-text-shadow);
  background: var(--input-button-color);
  border: none;
  border-bottom: 3px solid var(--button-3d-shadow);
  box-shadow: var(--secondary-box-shadow);
  transition: all 0.1s;
}

.input-button:hover {
  box-shadow: var(--secondary-hover-box-shadow);
  transform: translateY(-1px);
  cursor: pointer;
}

.input-button:focus {
  outline: 2px solid var(--input-button-focus-color);
} /**/

/* Text buttons */
.text-button {
  display: inline-block;
  padding: 0;
  color: var(--text-button-color);
  font: 600 1em "Computer Modern Bright", sans-serif;
  background: none;
  border: none;
  cursor: pointer;
  transition: all 0.1s;
}

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

.replace-problem,
.replace-notice {
  display: none;
  font-size: 0.9em;
  font-style: italic;
  letter-spacing: initial;
  text-transform: initial;
  opacity: 0;
}

.article-problem:hover :is(.replace-problem, .replace-notice) {
  display: inline-block;
  opacity: 1;
  animation: 0.1s show;
}

.replace-problem:active {
  transform: translateY(1px);
}

.replace-notice {
  color: var(--minor-color);
  font-weight: 600;
  font-size: 0.9em;
}

#clear-button {
  font-size: 0.95em;
  text-transform: uppercase;
}

.footer-button {
  font: normal 1.1em "Latin Modern Sans Demi-Condensed", sans-serif;
  word-spacing: -0.2ch;
}

.hidden-button {
  display: none;
} /**/

/* Shortcuts */
.shortcut-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--vertical-item-spacing) var(--horizontal-item-spacing);
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding: 6px;
  box-shadow: 0 0 0 2px var(--shortcut-button-color);
}

.shortcut-text {
  flex-basis: 100%;
  color: var(--subtitle-color);
  font: 600 1.16rem "Computer Modern Bright", sans-serif;
  text-align: center;
}

.shortcut-button {
  flex: 1;
  padding: 0.3rem 0.6rem;
  color: white;
  font: 600 1em "Computer Modern Bright", sans-serif;
  text-shadow: var(--button-text-shadow);
  background: var(--shortcut-button-color);
  border: none;
  border-bottom: 3px solid var(--button-3d-shadow);
  box-shadow: var(--secondary-box-shadow);
  cursor: pointer;
}

.shortcut-button:focus {
  outline: 2px solid var(--shortcut-button-focus-color);
}
/**/

/* Problem options input */
.options-input {
  display: flex;
  flex-wrap: wrap;
  gap: var(--vertical-item-spacing) var(--horizontal-item-spacing);
  align-items: stretch;
  justify-content: space-between;
  margin-bottom: 2rem;
} /**/

/* Input containers */
.input-container {
  flex: 45%;
  box-sizing: border-box;
  padding: 5px;
  background: var(--item-color);
  box-shadow: var(--secondary-box-shadow);
}

.input-container:focus {
  outline: 2px solid var(--input-focus-color);
} /**/

/* Direct input field */
.input-field {
  flex: 30%;
  min-width: 0;
  padding: 0.3em 0.6em;
  color: var(--text-color);
  font: 1em "Latin Modern Sans", sans-serif;
  background: var(--item-color);
  border: none;
  box-shadow: var(--secondary-box-shadow);
  -webkit-appearance: none;
}

.input-field:focus {
  outline: 2px solid var(--input-focus-color);
  outline-offset: 0;
}

input::placeholder {
  color: var(--placeholder-color);
}

.input-singletest {
  flex: 30%;
}

.input-singlever {
  flex: 10%;
}

#input-singleyear,
#input-singlenum {
  flex: 5%;
}

#input-name,
#input-break {
  flex: 20%;
} /**/

/* Tagify */
.tagify {
  display: flex;
  flex-wrap: nowrap;
  max-height: 57px;
  overflow-x: scroll;
  line-height: 1.1;
  background: var(--item-color);
  border: none;
  box-shadow: var(--secondary-box-shadow);
  transition: none;
  --tag-remove-btn-color: var(--text-color);
}

.tagify.tagify--focus {
  outline: 2px solid var(--input-focus-color);
}

tags > :is(tag, span) {
  flex: 0 0 auto;
}

.tagify.input-field {
  padding: 0;
  overflow-x: auto;
}

.tagify__input {
  margin: 5px;
  padding: 2px 10px;
}

.input-multi .tagify__input {
  line-height: inherit;
}

.input-field .tagify__input {
  margin: 6px 3px 0;
}

.tagify__input:empty::before {
  transition: none;
}

.tagify:not(.input-field) .tagify__tag {
  margin: 3px 0 3px 3px;
  line-height: inherit;
}

.input-field .tagify__tag > div {
  padding: calc(0.3em - 3px) 0.5em;
}

.tagify:not(.tagify--focus) .tagify__tag + .tagify__input {
  min-width: 0;
}

.tagify:not(.tagify--focus) .tagify__tag + .tagify__input::before {
  display: none;
}

.input-multi {
  flex: 28%;
}

.tagify--select .tagify__input {
  width: auto;
} /**/

/* Range slider thingy */
.irs {
  font-family: "Computer Modern Bright", sans-serif;
}

.irs--flat .irs-line {
  background: var(--input-slider-color);
  border-radius: 0 !important;
}

.irs--flat .irs-bar--single {
  border-radius: 0;
}

.irs--flat
  :is(.irs-bar, .irs-handle > i:first-child, .irs-from, .irs-single, .irs-to) {
  background: var(--input-accent-color);
}

.irs--flat :is(.irs-min, .irs-max) {
  color: var(--placeholder-color);
  background: var(--input-slider-color);
}

.irs--flat :is(.irs-min, .irs-from, .irs-single, .irs-to, .irs-max) {
  padding-top: 2px;
  font-size: 12px;
}

.js-irs-2 .irs-grid {
  /* basically a bad nth-child selector */
  left: 0.66% !important;
}

.irs--flat .irs-grid-pol {
  background-color: var(--range-grid-color);
}

.irs-grid-text {
  font-size: 11px;
}

.irs--flat :is(.irs-handle.state_hover, .irs-handle:hover) > i:first-child {
  background: var(--input-handle-color);
}

.irs--flat :is(.irs-from, .irs-single, .irs-to)::before {
  border-top-color: var(--input-accent-color);
}

.range-label {
  display: block;
  width: 100%;
  margin: 0;
  color: var(--placeholder-color);
  text-align: center;
} /**/

/* Checkbox & radio */
.checkbox-container {
  display: flex;
  align-items: center;
  padding-left: 1rem;
}

.checkbox-container-small {
  flex: 25%;
}

.checkbox-container-smaller {
  flex: 0 0 13em;
}

.checkbox-wrap {
  margin-right: var(--horizontal-item-spacing);
}

.checkbox-label {
  margin-bottom: 0;
  color: var(--secondary-color);
}

.radio-block {
  display: inline-block;
} /**/

/* More options header */
#options-header {
  margin-top: -0.5rem;
}

.text-collapsed > #options-header {
  margin-bottom: 2.5rem;
} /**/

/* Input positioning */
.input-end {
  flex: 60%;
}

.input-full,
.input-button-full {
  flex: 100%;
}

.input-button-half {
  flex: 48%;
} /**/

/* Notes, collapsed */
.text-collapse-header {
  position: relative;
}

.text-collapse-header::after {
  position: absolute;
  top: 5px;
  right: 1rem;
  display: inline-block;
  width: 9px;
  height: 9px;
  vertical-align: middle;
  border-color: var(--header-color);
  border-style: solid;
  border-width: 3px 3px 0 0;
  border-radius: 2px;
  transform: rotate(-45deg);
  content: "";
}

.text-collapsed h3 ~ * {
  display: none;
}

.text-collapsed h3::after {
  top: 0;
  transform: rotate(135deg);
}

#notes-text,
#notes-text ul {
  padding-inline-start: 2rem;
}

.difficulty-info-hidden {
  display: none;
}

#difficulty-chart {
  display: block;
  margin-top: 0.5rem;
} /**/

/* Problem sections */
.section-header {
  margin: -0.5rem -2rem 0;
  padding: 0.6rem 1rem 0.3rem;
  color: white;
  font-family: "Computer Modern Bright", sans-serif;
  text-shadow: var(--main-text-shadow);
  background: var(--section-color);
}

.header-minor {
  font-size: 0.8em;
}

.problem-section {
  margin-bottom: 1.5rem;
  padding: 0.5rem 2rem;
  background: var(--item-color);
  box-shadow: var(--main-box-shadow);
}

#about-section {
  margin-top: 1.1em;
}

#solutions-section {
  break-before: page;
}

.collapse-header {
  position: relative;
}

.collapse-header::after {
  position: absolute;
  top: calc(50% - 2px);
  right: 14px;
  display: inline-block;
  width: 9px;
  height: 9px;
  vertical-align: middle;
  border-color: white;
  border-style: solid;
  border-width: 3px 3px 0 0;
  border-radius: 2px;
  transform: rotate(-45deg);
  content: "";
}

.section-collapsed > *:not(h2) {
  display: none;
}

.section-collapsed .collapse-header::after {
  top: calc(50% - 7px);
  transform: rotate(135deg);
} /**/

/* Display settings */
.display-settings {
  padding: 0.5rem 2rem;
  background: var(--item-color);
  box-shadow: var(--secondary-box-shadow);
}

.settings-text {
  margin-right: 0.5em;
  padding-right: 0.5em;
  color: var(--subtitle-color);
  font: 600 1em "Computer Modern Bright", sans-serif;
  border-right: 1px solid var(--divider-color);
} /**/

/* Practice progress */
.practice-progress {
  display: none;
  gap: 0 var(--horizontal-item-spacing);
  justify-content: center;
  height: 2rem;
  margin-bottom: 1rem;
}

.random-input-active + .practice-progress {
  display: flex;
  flex-wrap: wrap;
}

.options-input + .practice-progress {
  margin-top: -1rem;
}

.streak-bar,
.question-bar {
  display: flex;
  flex-basis: 0;
  align-items: center;
  padding-left: 0.8rem;
  color: white;
  font: 600 1em "Computer Modern Bright", sans-serif;
  white-space: pre;
  text-shadow: var(--button-text-shadow);
  box-shadow: var(--secondary-box-shadow);
}

.streak-bar {
  min-width: 8ch;
  font-style: italic;
  background: var(--streak-color);
  border: 2px solid rgb(0 0 0 / 0.1);
}

.right-questions {
  min-width: 10ch;
  background: var(--correct-color);
}

.retry-questions {
  min-width: 8ch;
  background: var(--retry-color);
}

.blank-questions {
  min-width: 8ch;
  background: var(--blank-color);
}

.wrong-questions {
  min-width: 11ch;
  background: var(--wrong-color);
}

.spacer-bar {
  display: none;
}

.random-input-active + .progress-hidden,
.bar-hidden,
.progress-nobottom .spacer-bar {
  display: none;
}

.hide-counters .random-input-active + .practice-progress {
  display: none;
} /**/

/* Answer check */
.answer-check {
  margin-bottom: 1.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--hr-color);
}

.answer-options {
  margin-bottom: 1.5rem;
}

.batchans-options {
  margin: 1rem 0;
}

.answer-list {
  margin-top: 1rem;
}

.answer-box {
  margin: 0.5rem 0;
}

.answer-num {
  display: inline-block;
  min-width: 3ch;
  font: 600 1.1em "Computer Modern Bright", sans-serif;
}

#input-answer,
.input-batchans {
  background: var(--input-layer-color);
  border-top: 1px solid rgb(0 0 0 / 5%);
}

#input-answer:disabled {
  background: var(--item-disabled-color);
}

#input-answer:disabled::placeholder {
  color: var(--placeholder-disabled-color);
}

.input-batchans {
  width: min(23ch, calc(100% - 15ch));
}

.feedback-item {
  font: 600 1em "Computer Modern Bright", sans-serif;
  line-height: 1.5;
}

.feedback-icon {
  font-family: "Inter", sans-serif;
}

.correct-feedback {
  color: var(--correct-color);
}

.blank-feedback {
  color: var(--blank-color);
}

.wrong-feedback {
  color: var(--wrong-color);
}

.score-line {
  font: 600 1.2em "Computer Modern Bright", sans-serif;
  text-align: center;
}

.amc-stats {
  margin-top: -1em;
  font: normal 0.95em "Latin Modern Sans", sans-serif;
}

#batchans-section.batchans-scoreonly :is(.feedback-item, .feedback-answer),
#batchans-section:not(.batchans-amcscore) #amc-score {
  display: none;
} /**/

/* Article text container */
.article-text {
  font-size: 1.12rem;
}

.serif-text {
  font: 1.08rem / 1.45 "TeX Gyre Pagella", serif;
}

.justify-text p {
  text-align: justify;
  -webkit-hyphens: auto;
  hyphens: auto;
} /**/

/* Links */
.link-button {
  display: inline;
  margin: 0;
  padding: 0;
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

a,
.link-button {
  color: var(--link-color);
  text-decoration-line: none;
  transition: color 0.1s, text-decoration-color 0.1s, outline 0.1s,
    outline-offset 0.1s;
}

:is(a, .link-button):hover {
  color: var(--link-hover-color);
}

a.aops-link,
.section-button {
  display: inline-block;
  margin-top: 1em;
  font-style: italic;
}

#clear-history {
  font-style: italic;
}

.section-options {
  margin-bottom: -0.5em;
}

.section-button:active {
  transform: translateY(1px);
}

a.dark-link {
  color: inherit;
}

a.dark-link:hover {
  color: var(--range-label-hover-color);
}

#difficulty-link {
  font-size: 0.85em;
}

a.secret-link {
  color: inherit;
  cursor: default;
}

.article-text :is(a[title], a.external),
#about-text a,
.notes a {
  color: var(--link-blend-color);
  text-decoration-line: underline;
  text-decoration-color: var(--link-color);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-text :is(a[title], a.external):hover,
#about-text a:hover,
.notes a:hover {
  color: var(--link-hover-color);
  text-decoration-color: var(--link-hover-color);
}

.article-text a.new {
  text-decoration-color: var(--error-color); /* redlinks */
}

.article-text a.new:hover {
  color: var(--error-hover-color);
  text-decoration-color: var(--error-hover-color);
}

a.mw-selflink {
  color: inherit;
}

.source-link {
  font-weight: normal;
}

.source-link-hidden {
  display: none;
} /**/

/* Search and history */
#search-input {
  margin-bottom: 1rem;
}

#search-input + :is(.problem-section, .notes) {
  margin-top: 2rem;
}

.results-notice {
  color: var(--minor-color);
  font-style: italic;
}

.result-item {
  margin: 1em 0;
}

.result-title {
  margin: 0 0 0.2em;
  font: 600 1.15rem "Computer Modern Bright", sans-serif;
}

.result-snippet {
  margin: 0;
  font: normal 0.88rem / 1.4 "Fira Mono", monospace;
  overflow-wrap: break-word;
} /**/

/* Headings */
.article-text :is(h1, h2),
h3 {
  font: bold 1.16rem "Computer Modern Bright", sans-serif;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--hr-color);
}

.article-text:not(.batch-solutions-text) :is(h1, h2),
.problem-heading {
  margin-top: 1.5em;
}

#full-text h3 {
  letter-spacing: initial;
  text-transform: initial;
  border: none;
}

.batch-solutions-text :is(h2:not(.problem-heading), h3) {
  font-size: 1.05em;
  font-family: inherit;
  letter-spacing: initial;
  text-transform: initial;
  border: none;
}

.solutions-divider {
  font: 600 italic 1.25rem "Computer Modern Bright", sans-serif;
  letter-spacing: 0.02em;
  border-bottom: 1px dashed var(--hr-color);
}

.article-problem {
  break-inside: avoid;
} /**/

/* Misc */
u {
  text-decoration-thickness: 1px;
  text-underline-offset: 1px;
}

code,
pre {
  font: 0.9rem "Fira Mono", monospace;
}

hr {
  border-color: var(--hr-color);
  border-style: solid;
  border-top: none;
}

.article-text :is(dl:first-child,
.problem-heading + dl, /* redirect disclaimers etc */
.mw-editsection,
p:empty,
p > br:only-child) {
  display: none;
}

img,
.thumbinner {
  max-width: 100% !important; /* override inline widths */
  height: auto;
}

img.latex {
  display: inline-block;
}

img.latexcenter {
  display: block;
  margin: auto;
  padding: 10px;
  text-align: center;
}

.thumbcaption {
  font-size: 0.95em;
  font-style: italic;
}

div.tright,
div.floatright,
table.floatright {
  float: right;
  clear: right;
}

table:first-child {
  margin: auto;
  margin-top: 1em;
}

.wikitable {
  border-collapse: collapse;
  border-spacing: 0;
}

.wikitable tr:first-child > * {
  border-bottom: 1px solid var(--hr-color);
}

.wikitable :is(th, td) {
  padding: 0.1em 0.5em;
}

.error {
  color: var(--error-color);
}

.frontlink {
  font-family: "Computer Modern Bright", sans-serif; /* Main page */
}

.stats-notes {
  margin-top: 1em;
  border-top: 1px solid var(--hr-color);
}

.list-indent {
  margin-top: -1em;
  list-style: "⁃ ";
  padding-inline-start: min(6vw, 2em);
}

.list-inner {
  list-style: "⁃ ";
  padding-inline-start: min(6vw, 2em);
}

.list-head {
  font-weight: bold;
}

.list-minor {
  font-size: 0.95em;
}

/* .list-answered::marker {
  color: var(--minor-color);
  font-family: "Inter", sans-serif;
  content: "?  ";
}

.list-correct::marker {
  color: var(--correct-color);
  font-family: "Inter", sans-serif;
  content: "✓  ";
}

.list-retry::marker {
  color: var(--retry-color);
  font-family: "Inter", sans-serif;
  content: "↻  ";
}

.list-wrong::marker {
  color: var(--wrong-color);
  font-family: "Inter", sans-serif;
  content: "✗  ";
} */

#stats-chart {
  float: right;
}

.brag {
  font-style: italic;
} /**/

/* KaTeX */
.fallback-container:not(.fallback-live),
.katex-broken {
  display: none;
}

.katex {
  font-size: 1em;
}

.katex .base {
  display: inline;
  white-space: break-spaces;
}

.katex-display {
  padding-top: 2px;
  overflow: auto hidden;
}

.katex-display .katex .base {
  display: inline-block;
  white-space: nowrap;
} /**/

/* Element states */
:is(a, .text-button, mjx-container):focus {
  outline: 1.5px solid var(--placeholder-color);
  outline-offset: 2px;
}

::selection {
  background: hsl(201 80% 70% / 35%);
} /**/

/* Main and footer */
main {
  flex: auto;
  min-height: auto;
}

footer {
  padding-bottom: 1em;
  color: var(--secondary-color);
  font: 600 1em "Computer Modern Bright", sans-serif;
  line-height: 1.5;
  text-align: right;
  border-top: 1px solid var(--hr-color);
}

.footer-line {
  margin: 0.4em 0;
}

.disclaimer {
  font-style: italic;
}

.mobile-break {
  display: none;
} /**/

/* Loading bar */
.loading-notice {
  display: flex;
  margin: 1rem 0 var(--vertical-item-spacing);
}

.loading-bar-container {
  flex: 1;
  box-sizing: border-box;
  height: 1.2em;
  margin-left: 0.6rem;
  padding: 2px;
  border: 2px solid var(--input-slider-color);
  border-radius: 0.3rem;
}

.loading-bar {
  width: 0%;
  height: 100%;
  background: var(--input-accent-color);
  border-radius: 0.2rem;
  transition: width 0.1s linear;
} /**/

/* Breakpoint layouts */
@media (max-width: 1500px) {
  .page-container {
    width: 1200px;
  }
}

@media (max-width: 1350px) {
  .page-container {
    width: 1125px;
  }

  .input-flexone-full,
  .input-button-flexone-full {
    flex: 100%;
  }

  .input-flexone-half {
    flex: 48%;
  }
}

@media (max-width: 1200px) {
  .page-container {
    width: 1000px;
  }

  .button-text {
    display: none;
  }

  .button-icon {
    display: block;
  }
}

@media (max-width: 1050px) {
  .page-container {
    width: 90%;
  }

  .settings-text {
    display: block;
    margin: 0 0 0.25em 0;
    padding: 0.1em 0 0.15em;
    border-right: none;
    border-bottom: 1px solid var(--divider-color);
  }
}

@media (max-width: 1000px) {
  .button-container {
    flex-wrap: wrap;
  }

  .wide-button {
    flex: 48%;
  }

  .checkbox-container,
  .input-button-flex-full {
    flex: 100%;
  }
}

@media (max-width: 800px) {
  .page-container {
    width: 100%;
    padding: 0 1rem;
  }

  .tagify.input-multi {
    flex-wrap: wrap;
    max-height: initial;
  }

  .input-flex-full,
  .input-button {
    flex: 100%;
  }

  .input-flex-half {
    flex: 48%;
  }
}

@media (max-width: 600px) {
  .article-text {
    overflow-wrap: break-word;
  }

  .wide-button,
  .shortcut-button {
    flex: 100%;
  }

  .secondary-button {
    flex: 1;
  }

  .secondary-spacer {
    display: none;
  }

  .list-head {
    clear: both;
  }

  #stats-chart {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0.5rem 0;
  }

  #stats-chart svg > g {
    width: 100% !important;
  }

  #notes-text,
  #notes-text ul {
    padding-inline-start: 1.5rem;
  }
}

@media (max-width: 500px) {
  .source-link {
    display: inline-block;
  }

  .practice-progress:not(.progress-nobottom) {
    height: calc(4rem + var(--vertical-item-spacing));
  }

  .spacer-bar {
    display: block;
    flex-basis: 100%;
    height: 0;
  }

  .bullet {
    display: none;
  }

  .mobile-break {
    display: inline;
  }
}

@media (max-width: 450px) {
  .page-container {
    box-shadow: none;
  }

  .problem-section {
    padding: 0.5rem 0.8rem;
    box-shadow: var(--minor-box-shadow);
  }

  .display-settings {
    box-shadow: var(--minor-box-shadow);
  }

  .section-header {
    margin-right: -0.8rem;
    margin-left: -0.8rem;
  }
}

@media (max-width: 436px) {
  .input-flexino-full {
    flex: 100%;
  }
} /**/

/* Animations */
@keyframes show {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes shake {
  0% {
    transform: translate(-1px, 0);
  }

  10% {
    transform: translate(1px, 0);
  }

  20% {
    transform: translate(0, 0);
  }

  30% {
    transform: translate(-1px, 0);
  }

  40% {
    transform: translate(1px, 0);
  }

  50% {
    transform: translate(0, 0);
  }

  60% {
    transform: translate(-1px, 0);
  }

  70% {
    transform: translate(1px, 0);
  }

  80% {
    transform: translate(0, 0);
  }

  90% {
    transform: translate(-1px, 0);
  }

  100% {
    transform: translate(1px, 0);
  }
}

@keyframes glow {
  0% {
    box-shadow: var(--secondary-box-shadow), 0 0 0 transparent;
  }

  10% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(0 80% 70%);
  }

  20% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(40 80% 70%);
  }

  30% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(80 80% 70%);
  }

  40% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(120 80% 70%);
  }

  50% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(160 80% 70%);
  }

  60% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(200 80% 70%);
  }

  70% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(240 80% 70%);
  }

  80% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(280 80% 70%);
  }

  90% {
    box-shadow: var(--secondary-box-shadow), 0 0 5px hsl(320 80% 70%);
  }

  100% {
    box-shadow: var(--secondary-box-shadow), 0 0 0 transparent;
  }
}

.shake {
  animation: shake 0.5s;
}

.glow {
  animation: glow 2s;
} /**/

/* Print styling */
@media print {
  /* Font fixes */
  body,
  .article-text {
    color: black;
    font-size: 11pt;
  }

  .article-text h3 {
    font-size: 11.5pt;
  }

  .article-text :is(h1, h2) {
    font-size: 12pt;
  }

  img.latex {
    transform: scale(0.9);
  } /**/

  /* Prettier */
  .section-header {
    margin: 0 0 1rem;
    padding: 0;
    color: inherit;
    font: 2rem "Latin Modern Sans Demi-Condensed", sans-serif;
    text-shadow: none;
    background: none;
  }

  .page-container,
  .problem-section {
    box-shadow: none;
  }

  footer {
    margin: 0 2rem;
    font: normal 1em "Latin Modern Sans", sans-serif;
  }

  footer a {
    color: inherit;
    text-decoration-line: underline;
    text-decoration-color: var(--link-color);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
  } /**/

  /* Hide things */
  .dialog-nav,
  .header,
  .subtitle,
  .intro-header,
  .shortcut-container,
  .button-container,
  .options-input,
  .options-container,
  #difficulty-info,
  .random-input-active + .practice-progress,
  .answer-check,
  .notes,
  .error,
  a.aops-link,
  .section-options,
  .article-problem:hover .replace-problem,
  #batchans-section,
  .section-collapsed,
  #solutions-header::after,
  .display-settings,
  .noprint {
    display: none;
  }

  .page-container:not(.links-text) :is(a, a[title], a.external) {
    color: inherit;
    text-decoration-line: none;
  } /**/

  /* Footer */
  .page-container {
    min-height: initial;
  }

  .footer-fixed {
    position: fixed;
    bottom: 0;
  } /**/
}

@media screen {
  .printonly {
    display: none;
  }
} /**/