:root {
  --color-main: black;
  --color-background: white;
  --font-family: Karla, Arial, sans-serif;
  --font-size: 18px;
  --font-size-small: 16px;
  --line-height: 1.5;
}

html,
body {
  padding: 0;
  margin: 0;
  min-height: 100vh;
  min-width: 300px;
}

body {
  color: var(--color-main);
  background-color: var(--color-background);
  font-family: var(--font-family);
  font-size: var(--font-size);
}

img {
  max-width: 100%;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  text-transform: lowercase;
  font-weight: 400;
}

p {
  line-height: var(--line-height);
}

strong {
  font-weight: 700;
}

ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

a {
  color: var(--color-main);
  text-decoration: none;
}

a:hover {
  border-bottom: 1px solid var(--color-main);
}

.no-hover:hover {
  border-bottom: 0;
}

button {
  padding: 1em;
  margin: 0;
  border: 0;
  outline: 0;
  background-color: transparent;
  font-family: var(--font-family);
  font-size: var(--font-size-small);
  cursor: pointer;
}

button:hover span {
  border-bottom: 1px solid var(--color-main);
}

header,
main,
footer {
  margin: 1em;
}

main {
  flex: 1;
}

.hidden {
  display: none !important;
}

/*
 * Global
 * */

.header {
  margin-top: 2em;
  text-align: center;
  z-index: 1000;
  pointer-events: none;
}

.header-fixed {
  position: fixed;
  top: 1em;
  right: 0;
  left: 0;
}

@media screen and (max-width: 1000px) {
  .header-fixed {
    position: static;
  }
}

.container {
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.logo {
  pointer-events: initial;
  max-width: 300px;
}

.main {
  margin-top: 1em;
}

/*
 * Introduction
 * */

.introduction {
  margin: 0 auto;
  margin-top: 8em;
  max-width: 30em;
  text-align: center;
  font-size: var(--font-size-small);
  line-height: var(--line-height);
}

@media screen and (max-width: 1000px) {
  .introduction {
    margin-top: 3em;
  }
}

/*
 * Page
 * */

.page {
  margin: 0 auto;
  margin-top: 6em;
  max-width: 40em;
  font-size: var(--font-size-small);
}

/*
 * Fixed Navigation
 * */

.navigation {
  position: fixed;
  left: 0;
  margin: 2em;
  margin-top: 6em;
  z-index: 1200;
}

.navigation-top {
  top: 0;
}

.navigation-bottom {
  bottom: 0;
}

.navigation-item {
  margin-top: 0.5em;
  text-transform: lowercase;
}

@media screen and (max-width: 1000px) {
  .navigation-top {
    display: none;
  }

  .navigation-bottom {
    margin-top: 8em;
    position: static;
    text-align: center;
  }

  .header + .navigation-bottom {
    margin-top: 3.5em;
  }
}

/*
 * Footer Navigation
 * */

.footer-navigation {
  margin-top: 1em;
  margin-bottom: 1em;
  text-align: center;
}

.footer-navigation-item {
  display: inline-block;
  margin-right: 0.5em;
  margin-left: 0.5em;
  margin-top: 0.5em;
  text-transform: lowercase;
}

/*
 * Filter
 * */

.filter-item-link:hover {
  border-bottom: 0;
}

.filter-item-link-active {
  border-bottom: 1px solid var(--color-main) !important;
}

/*
 * Grid
 * */

.grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin: 4em auto;
  max-width: 1150px;
}

.grid-item {
  display: flex;
  flex-basis: 50%;
  flex-grow: 0;
  flex-shrink: 0;
}

.grid-item img {
  width: 100%;
  max-width: 900px;
  max-height: 900px;
}

.grid-item-inner {
  margin: 1em;
}

/*
/* "Dynamic" grid "Pinboard" style */
/* *

/* Variation of space between grid items */

.grid-pinboard .grid-item:nth-child(odd) > .grid-item-inner {
  margin: 1em;
}

.grid-pinboard .grid-item:nth-child(2n + 1) > .grid-item-inner {
  margin-left: 2em;
}

/* Variation of content position inside of grid items */

.grid-pinboard .grid-item:nth-child(odd) {
  justify-content: flex-end;
}

.grid-pinboard .grid-item:nth-child(3n) {
  align-items: center;
}

.grid-pinboard .grid-item:nth-child(3n - 3) {
  align-items: flex-end;
}

.grid-pinboard .grid-item:nth-child(5n) {
  align-items: center;
}

/* One-column layout with item on the right where next element on the left
 * moves a little bit up.
 *
 *        -----
 *        |   | <- Large item on the right
 *  ___   |   |
 *  | |   -----
 *  ... <-- Moves up a little
 * */

.grid-pinboard .grid-item:nth-child(5n - 2) {
  flex-basis: 100%;
  justify-content: flex-end;
}

.grid-pinboard .grid-item:nth-child(5n - 2) img {
  max-width: 450px; /* Restrict width to prevent overlap with next item */
}

.grid-pinboard .grid-item:nth-child(5n - 1) {
  position: relative;
  top: -10em;
}

body.mode-filter .grid-pinboard .grid-item {
  top: 0; /* Disable moving items up when filter is active */
}

/* One more one-column layout .. */

.grid-pinboard .grid-item:nth-child(6n) {
  flex-basis: 100%;
  max-width: auto;
}

/* Variations of padding around grid item */

.grid-pinboard .grid-item:nth-child(8n) > .grid-item-inner {
  padding-top: 4em;
}

.grid-pinboard .grid-item:nth-child(3n) > .grid-item-inner {
  padding-top: 3em;
}

.grid-pinboard .grid-item:nth-child(2) > .grid-item-inner {
  padding-top: 8em;
}

.grid-pinboard .grid-item:nth-child(2n + 4) > .grid-item-inner {
  padding-right: 1em;
}

.grid-pinboard .grid-item:nth-child(8n - 1) > .grid-item-inner {
  padding-right: 1em;
}

.grid-pinboard .grid-item:nth-child(3n - 2) > .grid-item-inner {
  padding-left: 4em;
}

/*
/* Simple grid style where all items have the same height */
/* */

.grid-same-size {
  justify-content: flex-start;
}

.grid-same-size .grid-item:nth-child(even) {
  justify-content: flex-start;
}

.grid-same-size .grid-item:nth-child(odd) {
  justify-content: flex-end;
}

.grid-same-size .grid-item img {
  width: 100%;
  max-height: 400px;
}

@media screen and (max-width: 1400px) {
  .grid {
    margin-right: 2em;
  }
}

@media screen and (max-width: 1000px) {
  .grid {
    justify-content: center;
  }

  .grid-item {
    flex-basis: 100%;
    justify-content: center !important;
    align-items: center !important;
    padding: 0 !important;
    top: 0 !important;
  }

  .grid-item-inner {
    padding: 0 !important;
    margin: 1em !important;
  }
}

@media screen and (max-width: 650px) {
  .grid {
    margin-top: 3em;
    margin-left: 0;
    margin-right: 0;
  }

  .grid-item-inner {
    padding: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
}

/*
 * Preview
 * */

.preview-info {
  font-size: var(--font-size-small);
  opacity: 0;
}

.preview:hover .preview-info {
  opacity: 1;
}

/*
 * Gallery
 * */

.gallery {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2000;
  background-color: var(--color-background);
  overflow: hidden;
  display: none;
  cursor: pointer;
  justify-content: center;
  align-items: center;
  font-size: var(--font-size-small);
}

.gallery-active {
  display: flex;
}

.gallery-image-container {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.gallery-image {
  max-width: 80%;
  max-height: 80%;
  pointer-events: initial;
}

.gallery-title {
  position: fixed;
  top: 0;
  left: 0;
  right: 50%;
  margin: 1em;
}

.gallery-index {
  position: fixed;
  bottom: 0;
  left: 0;
  margin: 1em;
}

.gallery-bar {
  position: fixed;
  right: 0;
  left: 0;
  justify-content: flex-end;
  display: flex;
}

.gallery-bar-top {
  top: 0;
}

.gallery-bar-bottom {
  bottom: 0;
}