:root {
  --color-white: #fff;
  --color-sand: hsl(20, 14%, 95%);
  --color-black: hsl(240, 10%, 12%);
  --color-true-black: #000;

  --color-primary-background: var(--color-white);
  --color-primary-text: var(--color-black);
  --color-secondary: hsl(19, 92%, 45%);
  --color-tertiary: hsl(19, 100%, 93%);
  --color-accent: hsl(217, 100%, 48%);
  --color-accent-light: hsl(217, 100%, 65%);

  --color-success: hsl(95, 55%, 55%);
  --color-danger: hsl(357, 70%, 33%);

  --content-max-width: 900px;
  --header-max-width: calc(var(--content-max-width) + 200px);

  --border-base-size: 2px;
  --border-container-size: calc(2 * var(--border-base-size));
  --border-header-size: calc(2 * var(--border-container-size));
  --border-color: var(--color-true-black);
  --border-color-accent: var(--color-secondary);

  --btn-color: var(--color-accent-light);
  --btn-color-hover: var(--color-secondary);
  --btn-text-color: var(--color-true-black);
  --btn-text-color-hover: var(--color-white);

  --input-color: var(--color-tertiary);
  --input-text-color: var(--color-primary-text);

  font-size: 20px;
}

@media only screen and (prefers-color-scheme: dark) {
  :root {
    --color-primary-background: var(--color-black);
    --color-primary-text: var(--color-sand);
    --color-secondary: hsl(19, 85%, 43%);
    --color-tertiary: hsl(250, 18%, 21%);

    --color-accent: hsl(200, 73%, 67%);
    --color-accent-light: hsl(200, 87%, 22%);

    --btn-text-color: var(--color-white);
    --btn-text-color-hover: var(--color-white);
  }
}

@font-face {
  font-family: Salmond;
  font-style: normal;
  font-weight: 300;
  src: url("/static/fonts/Salmond/Salmond-Light.ttf");
}
@font-face {
  font-family: Salmond;
  font-style: normal;
  font-weight: 600;
  src: url("/static/fonts/Salmond/Salmond-Semibold.ttf");
}

body {
  font-family: Inter, Roboto, "Nebula Sans", "Public Sans", Verdana, Arial, sans-serif;
  /* this enables special features of the font Inter
   * ss02 is "Alternate glyph set that increases visual difference between similar-looking characters."
   * tnum is "Fixed-width numbers are useful for tabular data, where comparing columns across rows is desired."
   */
  font-feature-settings:
    "ss02" 1,
    "tnum" 1;

  background: var(--color-primary-background);
  color: var(--color-primary-text);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: Salmond, sans-serif;
  font-weight: bold;
  line-height: 1.4em;

  margin-bottom: 0.5rem;
}

h1 {
  font-size: 2em;
}
h2 {
  font-size: 1.85em;
}
h3 {
  font-size: 1.5em;
}
h4 {
  font-size: 1.25em;
}
h5 {
  font-size: 1.15em;
}

p {
  line-height: 1.4em;
  margin-bottom: 1em;
}

a {
  text-decoration: none;
  color: var(--color-accent);
}
a:hover {
  text-decoration: underline;
}

em {
  font-style: italic;
}
b {
  font-weight: bold;
}

ul,
ol {
  margin-left: 2rem;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}

ul {
  list-style: disc;
}
ol {
  list-style: decimal;
}

li {
  line-height: 1.2em;
  margin-bottom: 0.25rem;
}

img {
  width: 100%;
  border: var(--border-base-size) var(--border-color) solid;
}

code {
  font-family: "Fira Code", "JetBrains Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.2em;
}

pre {
  margin-left: -1rem;
  margin-right: -1rem;
  margin-bottom: 1rem;
  padding: 1rem;

  background: #000;

  color: var(--color-sand);
}

form {
  display: inline-flex;
  flex-direction: row;
  gap: 2rem;
}
form.larger {
  width: 100%;

  display: flex;
  flex-direction: column;
}
form.larger > div {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
form.larger > .form--reverse {
  width: 100%;

  flex-direction: row;
  gap: 2rem;
}
form.larger > .form--reverse > * {
  width: 100%;

  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

input {
  padding: 0.5rem;

  font-size: 1rem;
  line-height: 1.4em;

  background: var(--input-color);
  color: var(--input-text-color);
  border: var(--border-base-size) var(--border-color) solid;

  transition: 0.3s ease;
}
input:focus {
  box-shadow: 0.3em -0.3em 0 var(--color-accent-light);
  border: var(--border-base-size) var(--border-color-accent) solid;
  outline: none;
}

button {
  border: none;
  cursor: pointer;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

.btn {
  padding: 0.5em 1em;

  display: inline-block;

  font-size: 1.1rem;

  color: var(--btn-text-color);
  background: var(--btn-color);
  /*box-shadow: -0.3em 0.3em 0 var(--color-secondary);*/
  border: var(--border-base-size) var(--border-color) solid;

  transition: 0.3s ease;
}
.btn:hover {
  color: var(--btn-text-color-hover);
  text-decoration: none;
  background: var(--btn-color-hover);
  box-shadow: 0.3em -0.3em 0 var(--btn-color);
}

.btns {
  margin: 2rem 0;

  display: flex;
  flex-direction: row;
  gap: 1rem;
  align-items: center;
}
.btns--center {
  justify-content: center;
}
.btns--no-marge {
  margin: 0;
}

.response {
  margin: 1rem 0;
  padding: 0.5rem 1rem;

  display: block;
}
.response--success {
  color: var(--color-black);
  background: var(--color-success);
}
.response--danger {
  color: var(--color-sand);
  background: var(--color-danger);
}
.response p {
  margin-bottom: 0;
}

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

/* TODO: remove this (HACK) */
.align-in-center {
    display: flex;
    align-items: center;
}

.error-block {
    margin: auto;
    background-color: var(--color-danger);
    text-align: center;
    padding: 30px;
    vertical-align: center;
}

.subtitle {
  margin-top: -0.75rem;

  font-weight: 300;
  font-style: italic;
}

header {
  background: var(--color-accent-light);
  border-bottom: var(--border-header-size) var(--border-color) solid;
}

.content {
  margin: 0 auto;
  padding: 2rem 1rem;
  max-width: var(--header-max-width);
}

.content .btn {
  --btn-color: var(--color-secondary);
  --btn-color-hover: var(--color-accent);
  --btn-text-color-hover: var(--color-black);
}

nav {
  padding: 1rem 4rem;

  background: var(--color-secondary);
  border-bottom: var(--border-container-size) var(--border-color) solid;

  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;

  --color-primary-text: var(--color-sand);
  color: var(--color-primary-text);
}

nav h1 {
  margin-bottom: -0.3em;
}
nav h1 a {
  color: var(--color-primary-text);
}
nav h1 a:hover {
  text-decoration: none;
}

.navbar__links {
  margin-top: 0.2em; /* to correctly align items with website title */
  margin-bottom: 0;

  display: flex;
  flex-direction: row;
  gap: 1rem;

  list-style: none;
  margin-left: 0;
}
.navbar__links a {
  /*font-family: Newsreader, sans-serif;*/
  font-size: 1.3em;
  font-weight: 400;
  color: var(--color-primary-text);
  text-decoration: none;
}
.navbar__links a:hover {
  text-decoration: underline;
}
nav li {
  margin-bottom: 0;
}

main {
  margin: 2rem auto;
  padding: 0 2rem;
  max-width: var(--content-max-width);
  min-height: 50vh;
}
main.larger {
  max-width: var(--header-max-width);
}
.flex {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.flex--small {
  gap: 1rem;
}

footer {
  padding: 4rem;

  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;

  background: var(--color-secondary);
  border-top: var(--border-header-size) var(--border-color) solid;

  --color-primary-text: var(--color-sand);
  color: var(--color-primary-text);
  text-align: center;
}
footer > * {
  max-width: var(--header-max-width);
}
footer h2 {
  margin-bottom: 0;
}
.footer__first {
  width: 100%;

  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  align-items: center;
}
footer ul {
  list-style: none;
  margin: 0;
}
footer a {
  display: block;

  color: var(--color-primary-text);
  font-weight: 500;
}
footer p {
  margin-bottom: 0;
}
footer h4 {
  margin-bottom: 0.15rem;
}

.article__container {
  margin-bottom: 4rem;

  gap: 2rem;
  align-items: baseline;
}

.article__container > article {
  padding: 2rem;

  background: var(--color-tertiary);
  border: var(--border-container-size) var(--border-color) solid;

  font-size: 0.9em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: sans-serif;
  font-size: 0.8rem;
  letter-spacing: 1px;
}

caption {
  caption-side: bottom;
  padding: 10px;
  font-weight: bold;
}

thead,
tfoot {
  background-color: var(--color-secondary);
}

th,
td {
  border: 1px solid rgb(160 160 160);
  padding: 8px 10px;
}

td:last-of-type {
  text-align: center;
}

tbody > tr:nth-of-type(even) {
  background-color: var(--color-primary-background);
}

tfoot th {
  text-align: right;
}

tfoot td {
  font-weight: bold;
}

@media only screen and (max-width: 1300px) {
  nav {
    padding: 1rem;
  }
}

@media only screen and (max-width: 1000px) {
  :root {
    font-size: 16px;
  }
  .navbar__links {
    margin-top: 0.1rem;
  }
  .navbar__links a {
    font-size: 1.2em;
  }
  form.larger > .form--reverse {
    flex-direction: column;
    gap: 1rem;
  }
  .article__container {
    gap: 2rem 1rem;
  }
  .article__container > article {
    font-size: 1rem;
  }
}

#toggle-navbar {
  display: none;
}
.navbar__toggle {
  display: none;
  font-size: 2rem;
  cursor: pointer;
}
#toggle-navbar:checked ~ h1 {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
}
#toggle-navbar:checked ~ .navbar__toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 100;

  font-size: 2rem;
}
#toggle-navbar:checked ~ .navbar__links {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin-top: 0;
  padding-left: 2rem;
  padding-top: 8rem;

  background: var(--color-secondary);

  display: flex;
  flex-direction: column;

  font-size: 1.5rem;
}

@media only screen and (max-width: 700px) {
  ul,
  ol {
    margin-left: 1rem;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .btns {
    flex-direction: column;
  }
  form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  .navbar__toggle {
    display: block;
  }
  .navbar__links {
    display: none;
  }
  footer {
    padding: 4rem 2rem;
  }
  .footer__first {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .article__container > article {
    padding: 1rem;
  }
}