/* =================== COLORS =================== */

:root {
  /* Native form controls (inputs, selects, file pickers) follow the theme. */
  color-scheme: light;

  --background-color: #fff;
  --text-color: #000;


  --link-color: #0000aa;
  --link-color-visited: #007733;
  --link-color-hover: #aa0000;
  --link-color-active: #0000aa;
  --grey-1: #ccc;
  --grey-2: #eee;
  --main-width: 600px;
}

:root.dark-mode {
  color-scheme: dark;

  --background-color: #121212;
  --text-color: #ffffff;

  --link-color: #6699ff;
  --link-color-visited: #66cc88;
  --link-color-hover: #ff5555;
  --link-color-active: #6699ff;

  --grey-1: #444444;
  --grey-2: #222222;
  --default-width: 600;
}

.dark-mode button {
  background-color: #555;
  color: #fff;

}

/* =================== CHANGING HTML DEFAULTS =================== */
/* Change defaults to make semantic HTML look great */


* {
  box-sizing: border-box;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 1rem;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem auto;
}

h1 {
  font-size: 2rem;
}

a:link { text-decoration: none; color: var(--link-color); }
a:visited { text-decoration: none; color: var(--link-color-visited); }
a:hover { text-decoration: none; color: var(--link-color-hover); }
a:active { text-decoration: none; text-decoration: underline; color: var(--link-color-active); }


blockquote {
  margin: 1rem 0;
  padding-left: 1rem;
  border-left: 4px solid var(--grey-1);
  font-style: italic;
}

table {
  border-collapse: collapse;
  margin: 1rem 0;
  /* Natural width: thin tables stay thin, wide ones may bleed up to 10rem
     per side out of the content column, but never past the viewport. */
  width: max-content;
  max-width: min(100% + 20rem, 100vw - 2rem);
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  /* display:block lets the table itself scroll horizontally when even the
     bleed cap is too narrow (rows become an anonymous inner table). */
  display: block;
  overflow-x: auto;
}

th, td {
  border: 1px solid var(--grey-1);
  padding: 0.25em 0.6em;
}

th {
  background-color: var(--grey-2);
}

#write textarea {
  width: 100%;
  font-family: monospace;
  box-sizing: border-box;
}

a.tag {
  display: inline-block;
  font-size: 0.8em;
  line-height: 1.4;
  padding: 0 0.6em;
  margin-left: 0.35em;
  border: 1px solid var(--grey-1);
  border-radius: 999px;
}

.tag-cloud a.tag {
  margin: 0 0.35em 0.5em 0;
  font-size: 1em;
}

article img.preview {
  border: 1px solid var(--grey-1);
  border-radius: 6px;
}

/* Anything marked dark-mode-adaptive is color-inverted in dark mode (keeps
   hues via the rotate). Meant for diagram-like images with light backgrounds;
   don't put it on photos. */
.dark-mode .dark-mode-adaptive { filter: invert(1) hue-rotate(180deg); }

img.preview-thumb[hidden] {
  display: none;
}

form .field {
  margin: 1em 0; /* same spacing as the <p> field groups */
}

ul.file-list {
  margin: 0.5em 0;
}

ul.file-list button,
#preview-remove {
  font-size: 0.8em;
  padding: 0 0.5em;
  margin-left: 0.5em;
}

ul.history li {
  margin-bottom: 0.5em;
}

#feed-form textarea {
  width: 100%;
  line-height: 1.6;
  /* Grows with its content (see feed.html) between 3 and 20 lines. */
  min-height: calc(3 * 1.6em + 0.5em);
  max-height: calc(20 * 1.6em + 0.5em);
  overflow-y: auto;
  resize: none;
}

section.feed-post {
  margin-top: 1.5em;
  padding-top: 0.5em;
  border-top: 1px solid var(--grey-1);
}

pre.diff {
  font-size: 0.85em;
  overflow-x: auto;
  white-space: pre; /* diffs must not wrap */
  padding: 0.5em;
  border: 1px solid var(--grey-1);
  border-radius: 6px;
}
pre.diff .add { color: var(--link-color-visited); }
pre.diff .del { color: var(--link-color-hover); }
pre.diff .hunk { color: var(--link-color); }
pre.diff .meta { font-weight: bold; }
ul.history li small {
  display: block;
}

img.preview-thumb {
  display: block;
  max-height: 8em;
  max-width: 16em;
  margin: 0.5em 0;
  border: 1px solid var(--grey-1);
  border-radius: 6px;
}

article footer {
  padding: 0.5em;
  margin-top: 2em;
  font-size: 0.9em;
}

blockquote cite {
  font-weight: bold;
}

pre {
  white-space: pre-wrap;
}


/* =================== SMALL DEVICES =================== */
@media (max-width: 640px) {
  /* Keep table columns readable on narrow screens: don't let them be
     squeezed into one-word slivers — the table scrolls instead. */
  th, td {
    min-width: 4rem;
  }
}

@media (max-width: 300px) {
  body {
    padding: 0;
    word-break: break-word;
  }
  table {
    /* Tables scroll horizontally, so cells never need mid-word breaks. */
    word-break: normal;
  }
  figure {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (max-width: 130px) {
  ul {
    padding-left: 1rem;
  }
  blockquote {
    padding-left: 0;
  }
}

/* =================== CUSTOM CLASSES FOR STYLING =================== */
/* Defines my page-style on top of HTML */

main, footer {
  max-width: 600px; /* With default Arial: 480px Harry Potter width, 566 Medium */ 
}

main, header, footer {
  margin: 0 auto;
}


article footer {
  margin-top: 5rem;
  background-color: var(--grey-2);
  padding: 0.5rem;
  border: 1px solid var(--grey-1);
}

#page-footer {
  max-width: 600px;
  margin: 0 auto;
  margin-top: 5rem;
  background-color: var(--grey-2);
  padding: 0.5rem;
  border: 1px solid var(--grey-1);
}

#page-header {
  width: 100%;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--grey-1);
}

#page-header nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

#site-name {
  color: var(--text-color);
}

.inline-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.inline-list li {
  display: inline;
}
.inline-list li:not(:last-child)::after {
  content: " - ";
}

.only-with-js {
  /* to prevent broken ui without js */
  opacity: 0;
}

.note {
  margin: 2rem 0;
  padding: 0.25rem 0;
  font-size: 0.9em;
  border-top: 1px solid var(--grey-1);
  border-bottom: 1px solid var(--grey-1);
}

/* keep the logout button inline next to the theme toggle */
.inline-form {
  display: inline;
  margin: 0;
}

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