Responsive Styles for old.reddit.com (Alpha) by asteconn

/* ==UserStyle==
@name         Responsive Styles for old.reddit.com (Alpha)
@version      20230612.09.43
@namespace    userstyles.world/user/asteconn
@description  Modern responsive CSS for old.reddit.com. Fixes issues with mobile and narrow window display, adds better comment visibility UI, and updates the default font for maximum screen readability. 

These styles can break subreddit themes and cause other visual bugs, depending on how the subreddit is styled. Adds lots of mitigations and resets to ensure that most custom subreddit themes will not cause breaking issues. 


@author       asteconn
@license      CC Zero
==/UserStyle== */

@-moz-document domain("old.reddit.com") {
:root {
  --color--core-background: #ffffff;
  --color--core-text: #222222;
  --color--brand-primary--base: #ff4500;
  --color--brand-secondary--darker: #3368a0;
  --color--brand-secondary--dark: #3368a0;
  --color--brand-secondary--base: #3368a0;
  --color--brand-secondary--light: #83a9d0;
  --color--brand-secondary--lighter: #83a9d0;
  --color--mono--light: #cccccc;
  --color--link--base: #3368a0;
  --color--link--hover: #3877b7;
  --color--link-decoration--base: #83a9d001;
  --color--link-decoration--hover: #83a9d0ff;
  --color--header-background: #cee3f8;
  --color--sidebar-background: #ffffff;
  --previous-search--padding: 1rem;
  --sidebar--item--margin-vertical: 0.5rem;
  --sidebar--item--margin-horizontal: 0.5rem;
  --post-entry--item--padding: 0.5rem;
  --post-entry--item-preview--padding: 0.25rem;
  --post-entry--item-preview--margin-horizontal: -0.25rem;
  --post-entry--item-preview--margin-vertical: 0;
  --post-entry--content--padding: 0.25rem;
  --post-entry--tagline-author--padding: 0.5rem;
  --post-entry--thumbnail--min-width: 10rem;
  --post-entry--thumbnail--min-height: 7.5rem;
  --comment--expand-link--width: 1.625rem;
  --infobar--padding: 0.5rem;
}

/* region Reset */
* {
  box-sizing: border-box;
}

html {
  font-size: 100%;
}

body {
  display: flex;
  padding-top: 0;
  margin: 0;
  border: 1px solid var(--color--mono--light);
  font-size: 12px;
}

p,
div,
input,
textarea,
video,
iframe {
  max-width: 100%;
}

textarea, input {
  background-color: var(--color--core-background);
}

a {
  color: var(--color--link--base);
  text-decoration: underline;
  text-decoration-color: var(--color--link-decoration--base);
  transition: all 0.1s ease-in;
}

a:focus, a:focus-visible, a:hover {
  color: var(--color--link--hover);
  text-decoration: underline;
  text-decoration-color: var(--color--link-decoration--hover);
}

.md, .md h1, .md h2, .md h3, .md h4, .md h5, .md h6 {
  color: var(--color--core-text, #000000);
	background: #ffffff87;
} 

/* endregion */
/* region Page Layout */
body {
  flex-direction: column;
  flex-wrap: nowrap;
  display: flex;
  justify-content: flex-start;
  align-items: stretch;
  width: 100%;
  margin: 0 auto;
}

@media (min-width: 0px) {
  body {
    max-width: 100%;
  }
}

@media (min-width: 520px) {
  body {
    max-width: 100%;
  }
}

@media (min-width: 780px) {
  body {
    max-width: 100%;
  }
}

@media (min-width: 958px) {
  body {
    max-width: 1080px;
  }
}

@media (min-width: 1280px) {
  body {
    max-width: 1358px;
  }
}

@media (min-width: 1600px) {
  body {
    max-width: 1358px;
  }
}

@media (min-width: 1280px) {
  body {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

body > div {
  display: block;
  flex: 0 0 100%;
  order: 100;
  float: unset;
  margin: 0;
  padding: 1rem;
}

body .debuginfo {
  flex: 0 0 100%;
  order: -100;
}

body > div#header {
  flex: 0 0 100%;
  order: -10;
}

body > div.content, body[class] > .content {
  order: 20;
  flex: 0 0 100%;
  width: 100%;
  max-width: 100%;
}

@media (min-width: 1280px) {
  body > div.content, body[class] > .content {
    flex: 0 0 75%;
    max-width: 75%;
  }
}

@media (min-width: 1280px) {
  body.with-listing-chooser > div.content, body.with-listing-chooser[class] > .content {
    flex: 0 0 min(65%, calc(75% - 160px));
    max-width: min(65%, calc(75% - 160px));
  }

  body.with-listing-chooser.listing-chooser-collapsed > div.content, body.with-listing-chooser.listing-chooser-collapsed[class] > .content {
    flex: 0 0 calc(75% - 10px);
    max-width: calc(75% - 10px);
  }
}

body > .listing-chooser {
  order: 40;
}

@media (min-width: 1280px) {
  body > .listing-chooser {
    order: 10;
    flex: 0 0 max(160px, 10%);
    max-width: max(160px, 10%);
  }
}

body.listing-chooser-collapsed > .listing-chooser {
  flex: 0 0 10px;
  max-width: 10px;
}

.combined-search-page .side, .search-page .side, .comments-page .side, .loggedin .side, body > div.side {
  order: 30;
}

@media (min-width: 1280px) {
  .combined-search-page .side, .search-page .side, .comments-page .side, .loggedin .side, body > div.side {
    flex: 0 0 25%;
    max-width: 25%;
  }
}

body > div#header {
  padding: 0;
}

body > div.content, body[class] > .content {
  position: static !important;
  right: 0 !important;
  bottom: 0 !important;
  top: 0 !important;
  left: 0 !important;
  float: none !important;
  margin: 0 !important;
  padding: 0 !important;
  width: 100%;
  background-color: var(--color--core-background);
}

.combined-search-page .side, .combined-search-page .side::before, .search-page .side, .search-page .side::before, .comments-page .side, .comments-page .side::before, .loggedin .side, .loggedin .side::before, body > div.side, body > div.side::before {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  background-color: var(--color--core-background);
  margin: 0;
  padding: 1rem;
  width: 100%;
}

/* endregion */
/* region Header */
/* header layout */
body #header {
  position: relative !important;
  right: 0 !important;
  bottom: 0 !important;
  top: 0 !important;
  left: 0 !important;
  float: none !important;
  margin: 0 !important;
  padding: 0 !important;
  display: grid;
  grid-template-columns: [start] 1fr [end];
  grid-template-rows: [start] auto auto auto [end];
  grid-template-areas: "subreddits" "account" "tabs";
  position: sticky !important;
  top: -4.25rem !important;
  overflow: hidden;
  border-bottom: 0;
  z-index: 99;
  height: unset;
  line-height: 1;
  box-shadow: 0 8px 6px -6px #0000004d;
}

body #header #sr-header-area {
  position: relative !important;
  right: 0 !important;
  bottom: 0 !important;
  top: 0 !important;
  left: 0 !important;
  float: none !important;
  margin: 0 !important;
  padding: 0 !important;
  grid-area: subreddits;
  z-index: 10000;
  height: 2rem;
}

body #header #sr-header-area::before {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  height: auto;
  min-height: 0;
  max-height: 100%;
  width: auto;
  max-width: 100vw;
  min-width: 0;
  line-height: 1;
  text-indent: unset;
  transform: scale(1) translateX(0) translateY(0);
  -webkit-transform: scale(1) translateX(0) translateY(0);
  -moz-transform: scale(1) translateX(0) translateY(0);
  -o-transform: scale(1) translateX(0) translateY(0);
  z-index: 0;
  margin: 0;
}

body #header #sr-header-area::after {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  height: auto;
  min-height: 0;
  max-height: 100%;
  width: auto;
  max-width: 100vw;
  min-width: 0;
  line-height: 1;
  text-indent: unset;
  transform: scale(1) translateX(0) translateY(0);
  -webkit-transform: scale(1) translateX(0) translateY(0);
  -moz-transform: scale(1) translateX(0) translateY(0);
  -o-transform: scale(1) translateX(0) translateY(0);
  z-index: 0;
  margin: 0;
}

body #header #header-bottom-right {
  position: relative !important;
  right: 0 !important;
  bottom: 0 !important;
  top: 0 !important;
  left: 0 !important;
  float: none !important;
  margin: 0 !important;
  padding: 0 !important;
  grid-area: account;
  z-index: 10000;
  padding: 0.5rem !important;
  height: min-content;
  min-height: 2rem;
  border-radius: 0;
}

body #header #header-bottom-right::before {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  height: auto;
  min-height: 0;
  max-height: 100%;
  width: auto;
  max-width: 100vw;
  min-width: 0;
  line-height: 1;
  text-indent: unset;
  transform: scale(1) translateX(0) translateY(0);
  -webkit-transform: scale(1) translateX(0) translateY(0);
  -moz-transform: scale(1) translateX(0) translateY(0);
  -o-transform: scale(1) translateX(0) translateY(0);
  z-index: 0;
  margin: 0;
}

body #header #header-bottom-right::after {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  height: auto;
  min-height: 0;
  max-height: 100%;
  width: auto;
  max-width: 100vw;
  min-width: 0;
  line-height: 1;
  text-indent: unset;
  transform: scale(1) translateX(0) translateY(0);
  -webkit-transform: scale(1) translateX(0) translateY(0);
  -moz-transform: scale(1) translateX(0) translateY(0);
  -o-transform: scale(1) translateX(0) translateY(0);
  z-index: 0;
  margin: 0;
}

body #header #header-bottom-left {
  position: relative !important;
  right: 0 !important;
  bottom: 0 !important;
  top: 0 !important;
  left: 0 !important;
  float: none !important;
  margin: 0 !important;
  padding: 0 !important;
  justify-content: flex-start;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  grid-area: tabs;
  z-index: 10000;
  min-height: 3rem;
  max-height: 6rem;
}

body #header #header-bottom-left::before {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
  float: none;
  height: auto;
  min-height: 0;
  max-height: 100%;
  width: auto;
  max-width: 100vw;
  min-width: 0;
  line-height: 1;
  text-indent: unset;
  transform: scale(1) translateX(0) translateY(0);
  -webkit-transform: scale(1) translateX(0) translateY(0);
  -moz-transform: scale(1) translateX(0) translateY(0);
  -o-transform: scale(1) translateX(0) translateY(0);
  z-index: 0;
  margin: 0;
}

body #header #header-bottom-left::after {
  position: relative;
  right: 0;
  bottom: 0;
  top: 0;
  left: 0;
...