/* docs/stylesheets/theme.css: the site takes its colours from the banner.
 *
 * banner.svg draws the name in #f0f4fa on a #0d1117 to #131a2b gradient and
 * ends in a waveform coloured from Telegram blue #2aabee through teal #26b8c9
 * to Spotify green #1db954. The header and the dark page use the banner
 * background; the accent is the waveform's teal. mkdocs.yml sets
 * `primary: custom` and `accent: custom`, so Material paints nothing until
 * these variables exist.
 */
:root {
  --md-primary-fg-color: #0d1117; /* banner background */
  --md-primary-fg-color--light: #131a2b; /* banner background, lower edge */
  --md-primary-fg-color--dark: #070b10;
  --md-primary-bg-color: #f0f4fa; /* banner wordmark */
  --md-primary-bg-color--light: #8b95a7; /* banner tagline */

  --md-accent-fg-color: #26b8c9; /* waveform teal */
  --md-accent-fg-color--transparent: #26b8c91a;
}

/* Dark scheme: the page body uses the banner background too, so the header
   and the page read as one surface. #26b8c9 on #0d1117 is 7.9:1. */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: #0d1117;
  --md-code-bg-color: #131a2b;
  --md-typeset-a-color: #26b8c9;
}

/* Light scheme: #26b8c9 on white is 2.4:1, too faint for body links.
   #177c88 is the same hue at 4.9:1. */
[data-md-color-scheme="default"] {
  --md-typeset-a-color: #177c88;
}

/* Fixed logo size so it does not crowd the site name. */
.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 1.6rem;
  width: 1.6rem;
}

/* The site name, set the way banner.svg sets the wordmark: bold, tight.
 *
 * Only the first topic is styled. Material puts the site name in one
 * .md-header__topic and the page title in a second one, and swaps them on
 * scroll. Styling both would change every page title too. */
.md-header__topic:first-child .md-ellipsis {
  color: #f0f4fa;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Keep the mark and the name close, so they read as one unit. */
.md-header__button.md-logo {
  padding-right: 0.2rem;
}

.md-header__title {
  margin-left: 0.2rem;
}

/* Buttons.
 *
 * Material paints .md-button in --md-primary-fg-color, the header colour. On
 * the dark page that is also the page background, so a button would show as
 * plain text. Outline buttons take the link colour instead. */
.md-typeset .md-button {
  color: var(--md-typeset-a-color);
  border-color: var(--md-typeset-a-color);
  border-radius: 0.5rem;
}

.md-typeset .md-button:focus,
.md-typeset .md-button:hover {
  background-color: var(--md-typeset-a-color);
  border-color: var(--md-typeset-a-color);
  color: #ffffff;
}

.md-typeset .md-button--primary,
.md-typeset .md-button--primary:focus,
.md-typeset .md-button--primary:hover {
  /* The waveform's blue and teal, each darkened until white text passes
     4.5:1 (#0f7ab8 4.7:1, #177c88 4.9:1). */
  background: linear-gradient(90deg, #0f7ab8 0%, #177c88 100%);
  border-color: transparent;
  color: #ffffff;
}

.md-typeset .md-button--primary:focus,
.md-typeset .md-button--primary:hover {
  box-shadow: 0 0.2rem 0.8rem #26b8c959;
}

/* Grid cards: the border picks up the accent on hover, so the cards match
   the buttons and links. */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid > .card {
  border-radius: 0.5rem;
}

.md-typeset .grid.cards > ul > li:focus-within,
.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid > .card:focus-within,
.md-typeset .grid > .card:hover {
  border-color: #26b8c9;
}

/* The home page keeps an H1 for search, screen readers and the browser tab.
   The banner under it already shows the name, so the H1 is hidden visually.
   Use it as: # telegram-slskd-local-bot { .tsb-visually-hidden } */
.md-typeset h1.tsb-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Environment variable names in tables, such as DOWNLOAD_CLEANUP_HOURS, must
   not wrap mid-word. Material sets word-break: break-word on code; normal
   keeps a name whole but still lets a long line wrap at its spaces. */
.md-typeset table:not([class]) code {
  word-break: normal;
}

/* The phone screenshots on the home page, once they exist (section 7 of the
   site plan): four in a row on a wide screen, two on a narrow one, each with
   a short caption. */
.md-typeset .tsb-phone-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.8rem;
  margin: 1em 0;
}

.md-typeset .tsb-phone-gallery figure {
  margin: 0;
}

.md-typeset .tsb-phone-gallery img {
  border-radius: 0.4rem;
}

.md-typeset .tsb-phone-gallery figcaption {
  margin-top: 0.3rem;
  font-size: 0.7rem;
}

@media screen and (max-width: 44.9375em) {
  .md-typeset .tsb-phone-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}