/*
 * Copyright (c) 2025 Lucas Gabriel Vuotto <lucas@lgv5.net>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

:root {
  --dark-theme-bg: black;
  --dark-theme-text: white;
  --dark-theme-accent: royalblue;
  --dark-theme-accent-hover: orange;
  --dark-theme-tag-kind-a: crimson;
  --dark-theme-tag-kind-c: seagreen;
  --dark-theme-tag-kind-r: mediumorchid;

  --light-theme-bg: white;
  --light-theme-text: black;
  --light-theme-accent: royalblue;
  --light-theme-accent-hover: orange;
  --light-theme-tag-kind-a: crimson;
  --light-theme-tag-kind-c: seagreen;
  --light-theme-tag-kind-r: mediumorchid;

  --bg: var(--light-theme-bg);
  --text: var(--light-theme-text);
  --accent: var(--light-theme-accent);
  --accent-hover: var(--light-theme-accent-hover);
  --tag-kind-a: var(--light-theme-tag-kind-a);
  --tag-kind-c: var(--light-theme-tag-kind-c);
  --tag-kind-r: var(--light-theme-tag-kind-r);

  --gap: 1.5rem;
  --viewport-width: 90rem;

  --border-thin: 0.0625rem solid var(--accent);

  --gallery-column-gap: 1.2rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

dl,
form,
h1,
h2,
h3,
input,
ol,
p,
ul {
  margin: 0;
}

body {
  margin: 0 auto;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  font-family: monospace;
  font-size: 1rem;
  line-height: 1.5;
}

dl,
form,
h1,
h2,
h3,
ol,
p,
ul {
  margin-bottom: var(--gap);
}

h1 {
  text-align: center;
  font-size: 3rem;
  line-height: 2;
}

h2 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h3 {
  font-size: 2rem;
  line-height: 1.5;
}

dd {
  margin-left: var(--gap);
}

dt {
  font-weight: bold;
}

ol,
ul {
  padding-left: calc(var(--gap) * 2);
}

a,
a:link,
a:visited {
  color: var(--accent);
}

a:hover,
a:focus,
a:active {
  color: var(--accent-hover);
}

img {
  max-width: 100%;
  height: auto;
}

input {
  background-color: var(--bg);
  color: var(--text);
  font: inherit;
  border: var(--border-thin);
  padding: 0 0.1875rem;
}

input[type=submit] {
  background-color: var(--accent);
  color: var(--bg);
  font-weight: bold;
}

input[type=submit]:active {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

form[name=search] {
  gap: 1rem;
  justify-content: center;
  align-items: center;
}

form[name=search] input[type=submit] {
  width: 7rem;
}

form[name=search] input[name=tags] {
  width: 100%;
}

.position-relative {
  position: relative;
}

#tags-suggestions {
  position: absolute;

  background-color: var(--bg);
  width: 100%;
  border: var(--border-thin);
  box-shadow: rgba(0, 0, 0, 0.5) 0 0.25rem 0.5rem -0.25rem;
  padding-left: 0;

  list-style: none;
}

.suggestion-hover {
  background-color: #eee;
}

#tags-suggestions li {
  padding-left: 0.1875rem;
  padding-right: 0.1875rem;
}

body > header {
  border-bottom: var(--border-thin);
  font-size: 1.25rem;
  line-height: 2.4;
}

body > header > nav {
  gap: 0 var(--gap);

  /* Make the navbar horizontally scrollable. Used for mobile. */
  white-space: nowrap;
  overflow-x: auto;
}

body > header > nav > a {
  font-weight: bold;
  text-decoration: none;
}

body > footer {
  border-top: var(--border-thin);
}

body > footer > p {
  /*
   * Together they add for a single --gap, which is also the vertical rhythm
   * unit.
   */
  padding-top: calc(var(--gap) / 2);
  margin-bottom: calc(var(--gap) / 2);
}

main {
  border-top: var(--border-thin);
  border-bottom: var(--border-thin);
  margin-top: 0.1875rem;
  margin-bottom: 0.1875rem;
  padding-top: var(--gap);
  padding-bottom: var(--gap);
}

[x-cloak] {
  display: none;
}

.text-center {
  text-align: center;
}

.float-right {
  float: right;
}

.layout-viewport {
  margin-left: auto;
  margin-right: auto;
  width: var(--viewport-width);
}

.layout-flex-row {
  display: flex;
  flex-direction: row;
}

.layout-flex-column {
  display: flex;
  flex-direction: column;
}

.layout-flex-item-fullsize {
  flex: auto;
}

.pager > a,
.pager > span {
  display: inline-block;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  border: var(--border-thin);
}

.pager > a {
  text-decoration: none;
}

.pager > a:hover,
.pager > a:focus {
  color: var(--bg);
  background-color: var(--accent);
}

.pager > a:active {
  color: var(--bg);
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.pager > span {
  border-color: var(--text);
}

.gallery {
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--gap) var(--gallery-column-gap);
  margin-bottom: var(--gap);
}

.gallery > a {
  flex: 0 1 14rem;
  padding: 0.1875rem;
  line-height: 0;
}

.gallery > a:link,
.gallery > a:visited {
  border: var(--border-thin);
}

.gallery > a:hover,
.gallery > a:focus,
.gallery > a:active {
  border-color: var(--accent-hover);
}

.media {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: var(--gap);
}

.media-metadata {
  flex: 1;
}

.media-item {
  flex: 3;
  line-height: 0;
}

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

span.tag-kind-a,
a.tag-kind-a:link,
a.tag-kind-a:visited {
  color: var(--tag-kind-a);
}

span.tag-kind-c,
a.tag-kind-c:link,
a.tag-kind-c:visited {
  color: var(--tag-kind-c);
}

span.tag-kind-r,
a.tag-kind-r:link,
a.tag-kind-r:visited {
  color: var(--tag-kind-r);
}

a.tag-kind-a:hover,
a.tag-kind-a:focus,
a.tag-kind-a:active,
a.tag-kind-c:hover,
a.tag-kind-c:focus,
a.tag-kind-c:active,
a.tag-kind-r:hover,
a.tag-kind-r:focus,
a.tag-kind-r:active {
  color: var(--accent-hover);
}

@media screen and (max-width: 60rem) {
  :root {
    --viewport-width: 100%;
    --gallery-column-gap: 1rem;
  }

  body > header > nav,
  body > footer,
  main {
    padding-left: var(--gap);
    padding-right: var(--gap);
  }

  .media { flex-direction: column-reverse; }
  .media-metadata { flex: auto; }
  .media-item { flex: auto; }
}

@media screen and (min-width: 60rem) {
  :root {
    --viewport-width: 60rem;
    --gallery-column-gap: 1.3125rem;
  }

  body > header > nav,
  body > footer,
  main {
    padding-left: 0;
    padding-right: 0;
  }

  .media { flex-direction: row; }
  .media-metadata { flex: 1; }
  .media-item { flex: 3; }
}

@media screen and (min-width: 90rem) {
  :root {
    --viewport-width: 90rem;
    --gallery-column-gap: 1.2rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--dark-theme-bg);
    --text: var(--dark-theme-text);
    --accent: var(--dark-theme-accent);
    --accent-hover: var(--dark-theme-accent-hover);
    --tag-kind-a: var(--dark-theme-tag-kind-a);
    --tag-kind-c: var(--dark-theme-tag-kind-c);
    --tag-kind-r: var(--dark-theme-tag-kind-r);
  }
}