:root {
  color-scheme: light dark;

  --background-color: #fff;
  --secondary-background-color: #f7f7f7;

  --color-blue: #049ef4;
  --text-color: #444;
  --secondary-text-color: #9e9e9e;

  --font-size: 16px;
  --line-height: 26px;

  --border-style: 1px solid #e8e8e8;
  --header-height: 48px;
  --panel-width: 300px;
  --panel-padding: 10px;
  --icon-size: 20px;
  --menu-icon-text-color: #444;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #222;
    --secondary-background-color: #2e2e2e;

    --text-color: #bbb;
    --secondary-text-color: #666;

    --border-style: 1px solid #444;
  }

  #previewsToggler {
    filter: invert(100%);
  }
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html,
body {
  height: 100%;
  overflow-y: hidden;
}

html {
  font-size: calc(var(--font-size) - 1px);
  line-height: calc(var(--line-height) - 1px);
}

body {
  font-family: monospace;
  margin: 0px;
  color: var(--text-color);
  background-color: var(--background-color);
}

a {
  text-decoration: none;
}

h1 {
  font-size: 16px;
  line-height: 24px;
  font-weight: 500;
}

h2 {
  padding: 0;
  margin: 16px 0;
  font-size: calc(var(--font-size) - 1px);
  line-height: var(--line-height);
  font-weight: 500;
  color: var(--color-blue);
}

h3 {
  margin: 0;
  font-weight: 500;
  font-size: calc(var(--font-size) - 1px);
  line-height: var(--line-height);
  color: var(--secondary-text-color);
}

h1 a {
  color: var(--color-blue);
}

#newBtn {
  width: 98px;
  height: 98px;
  border-radius: 60px;
  position: absolute;
  text-align: center;
  border: 0px;
  font-size: large;
  font-weight: bold;
  right: 40px;
  bottom: 40px;
  z-index: 100000;
  background-color: #049ef4;
  color: white;
  cursor: pointer;
}

#metadata {
  /* position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	height: 200px; */
  background: white;
  border-top: 1px solid #ccc;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

#progressWapper {
  position: absolute;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#progressWapper.successful {
  display: none;
}

#metadata h1 {
  font-size: calc(var(--font-size) + 8px);
  line-height: var(--line-height);
  font-weight: 500;
  color: var(--color-blue);
}

#metadata h2 {
  font-size: calc(var(--font-size) + 4px);
  line-height: var(--line-height);
  font-weight: 500;
  color: var(--color-blue);
}

#metadata p {
  margin: 5px 0;
}

#header {
  display: flex;
  height: var(--header-height);
  border-bottom: var(--border-style);
  align-items: center;
}

#header h1 {
  padding-left: var(--panel-padding);
  flex: 1;
  display: flex;
  align-items: center;
  color: var(--color-blue);
  font-size: 18px;
  line-height: 24px;
  font-weight: 500;
}

#header #version {
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  border-radius: 4px;
  line-height: 16px;
  padding: 0px 2px;
  margin-left: 6px;
  font-size: 0.9rem;
}

#panel {
  position: fixed;
  z-index: 100;
  left: 0px;
  width: var(--panel-width);
  height: 100%;
  overflow: auto;
  border-right: var(--border-style);
  display: flex;
  flex-direction: column;
  transition: 0s 0s height;
  transition: transform 0.3s ease-in-out;
}

#panel #clearSearchButton {
  width: 48px;
  height: 48px;
  display: none;
  background-color: var(--text-color);
  background-size: var(--icon-size);
  -webkit-mask-image: url(../files/ic_close_black_24dp.svg);
  -webkit-mask-position: 50% 50%;
  -webkit-mask-repeat: no-repeat;
  mask-image: url(../files/ic_close_black_24dp.svg);
  mask-position: 50% 50%;
  mask-repeat: no-repeat;
  cursor: pointer;
  margin-right: 0px;
}

#panel.searchFocused #clearSearchButton {
  display: block;
}

#panel.searchFocused #language {
  display: none;
}

#panel.searchFocused #filterInput {
  -webkit-mask-image: none;
  mask-image: none;
  background-color: inherit;
  padding-left: 0;
}

#panel #expandButton {
  width: 48px;
  height: 48px;
  margin-right: 4px;
  margin-left: 4px;
  display: none;
  cursor: pointer;
  background-color: var(--text-color);
  background-size: var(--icon-size);
  -webkit-mask-image: url(../files/ic_menu_black_24dp.svg);
  -webkit-mask-position: 50% 50%;
  -webkit-mask-repeat: no-repeat;
  mask-image: url(../files/ic_menu_black_24dp.svg);
  mask-position: 50% 50%;
  mask-repeat: no-repeat;
}

#panel.collapse {
  transform: translateX(-100%);
}

#panel.collapse #collapseButton {
  display: none;
}

#panel #collapseButton {
  width: 48px;
  height: 48px;
  margin-right: 4px;
  margin-left: 4px;
  cursor: pointer;
  background-color: var(--text-color);
  background-size: var(--icon-size);
  -webkit-mask-image: url(../files/ic_menu_black_24dp.svg);
  -webkit-mask-position: 50% 50%;
  -webkit-mask-repeat: no-repeat;
  mask-image: url(../files/ic_menu_black_24dp.svg);
  mask-position: 50% 50%;
  mask-repeat: no-repeat;
}

#toLeftButton {
  width: 34px;
  cursor: pointer;
  position: absolute;
  left: var(--panel-width);
  src: url(../files/toleft.svg);
  top: 14px;
  z-index: 1001;
  transition: left 0.3s ease-in-out;
}

#toLeftButton.collapse {
  left: 0px;
}

#leftExpandButton {
  width: 48px;
  height: 48px;
  margin-left: 4px;
  cursor: pointer;
  position: absolute;
  visibility: hidden;
  left: var(--panel-width);
  top: 4px;
  background-color: var(--menu-icon-text-color);
  background-size: var(--icon-size);
  -webkit-mask-image: url(../files/ic_menu_black_24dp.svg);
  -webkit-mask-position: 50% 50%;
  -webkit-mask-repeat: no-repeat;
  mask-image: url(../files/ic_menu_black_24dp.svg);
  mask-position: 50% 50%;
  mask-repeat: no-repeat;
  z-index: 1001;
  transition: left 0.3s ease-in-out;
}

#panel #sections {
  display: flex;
  justify-content: center;
  z-index: 1000;
  position: relative;
  height: 100%;
  align-items: center;
  font-weight: 500;
  font-size: calc(var(--font-size) - 2px);
  line-height: calc(var(--line-height) - 2px);
}
/* 让 sections 自身不要强行把孩子垂直居中 */
#panel #sections {
  align-items: stretch;
}

#panel #sections * {
  padding: 0 var(--panel-padding);
  height: 100%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 让 Model / Blog / Panorama 向下移动到离底线一半的位置 */
#panel #sections {
  align-items: flex-end; /* 贴底对齐 */
  padding-bottom: -20px;
}

#panel #sections .selected:after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  border-bottom: 1px solid var(--text-color);
}

#panel #sections a {
  color: var(--secondary-text-color);
}

body.home #panel #sections {
  display: none;
}

#panel #inputWrapper {
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 0 0 var(--panel-padding);
  position: relative;
  background: var(--background-color);
}

#panel #inputWrapper:after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-bottom: var(--border-style);
  content: "";
}

#panel #filterInput {
  flex: 1;
  width: 100%;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-color);
  outline: none;
  border: 0px;
  background-color: var(--text-color);
  background-size: var(--icon-size);
  -webkit-mask-image: url(../files/ic_search_black_24dp.svg);
  -webkit-mask-position: 0 50%;
  -webkit-mask-repeat: no-repeat;
  mask-image: url(../files/ic_search_black_24dp.svg);
  mask-position: 0 50%;
  mask-repeat: no-repeat;
  font-family: monospace;
}

#panel #language {
  font-family: monospace;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-color);
  border: 0px;
  background-image: url(ic_arrow_drop_down_black_24dp.svg);
  background-size: var(--icon-size);
  background-repeat: no-repeat;
  background-position: right center;
  background-color: var(--background-color);
  padding: 2px 24px 4px 24px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  margin-right: 10px;
  text-align-last: right;
}

#panel #language:focus {
  outline: none;
}

#contentWrapper {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

#panel #content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 0 var(--panel-padding) var(--panel-padding) var(--panel-padding);
}

#panel #content ul {
  list-style-type: none;
  padding: 0px;
  margin: 0px 0 20px 0;
}

#panel #content ul li {
  margin: 1px 0;
}

#panel #content h2:not(.hidden) {
  margin-top: 16px;
  border-top: none;
  padding-top: 0;
}

#panel #content h2:not(.hidden) ~ h2 {
  margin-top: 32px;
  border-top: var(--border-style);
  padding-top: 12px;
}

#panel #content h3 {
  color: var(--text-color);
  font-weight: 900;
}

#panel #content a {
  position: relative;
  color: var(--text-color);
}

#panel #content a:hover,
#panel #content a:hover .spacer,
#panel #content .selected {
  color: var(--color-blue);
}

#panel #content .selected {
  text-decoration: underline;
}

#panel #content .hidden {
  display: none !important;
}

#panel #content #previewsToggler {
  cursor: pointer;
  float: right;
  margin-top: 18px;
  margin-bottom: -18px;
  opacity: 0.25;
}

#panel #content.minimal .card {
  background-color: transparent;
  margin-bottom: 4px;
}

#panel #content.minimal .cover {
  display: none;
}

#panel #content.minimal .title {
  padding: 0;
}

#panel #content.minimal #previewsToggler {
  opacity: 1;
}

body.home #panel #content h2 {
  margin-bottom: 2px;
  padding-bottom: 0px;
  margin-top: 18px;
  border-top: none;
  padding-top: 6px;
}

.spacer {
  color: var(--secondary-text-color);
  margin-left: 2px;
  padding-right: 2px;
}

#viewer,
iframe {
  position: absolute;
  border: 0px;
  left: 0;
  right: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
}

iframe#viewer {
  display: none;
  /* Workaround: The iframe has white background in Chrome for some reason */
}

#viewer {
  padding-left: var(--panel-width);
  transition: all 0.3s ease-in-out;
}

#viewer.collapse {
  padding-left: 0px;
}

#leftExpandButton.collapse {
  left: 0px;
  visibility: visible;
}

#button {
  position: fixed;
  bottom: 16px;
  right: 16px;

  padding: 12px;
  border-radius: 50%;
  margin-bottom: 0px;

  background-color: #fff;
  opacity: 0.9;
  z-index: 999;

  box-shadow: 0 0 4px rgba(0, 0, 0, 0.15);
}

#button:hover {
  cursor: pointer;
  opacity: 1;
}

#button img {
  display: block;
  width: var(--icon-size);
}

#button.text {
  border-radius: 25px;
  padding-right: 20px;
  padding-left: 20px;
  color: var(--color-blue);
  opacity: 1;
  font-weight: 500;
}

#projects {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  line-height: 0;
}

#projects a {
  overflow: hidden;
}

#projects a img {
  width: 100%;
  transform: scale(1);
  transition: 0.15s transform;
}

#projects a:hover img {
  transform: scale(1.08);
}

@media all and (min-width: 1500px) {
  #projects {
    grid-template-columns: repeat(7, 1fr);
  }
}

@media all and (min-width: 1700px) {
  :root {
    --panel-width: 360px;
    --font-size: 18px;
    --line-height: 28px;
    --header-height: 56px;
    --icon-size: 24px;
  }

  #projects {
    grid-template-columns: repeat(8, 1fr);
  }
}

@media all and (min-width: 1900px) {
  #projects {
    grid-template-columns: repeat(9, 1fr);
  }
}

@media all and (max-width: 1300px) {
  #projects {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media all and (max-width: 1100px) {
  #projects {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media all and (max-width: 900px) {
  #projects {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media all and (max-width: 700px) {
  #projects {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  border-radius: 3px;
  overflow: hidden;
  background-color: var(--secondary-background-color);
  padding-bottom: 6px;
  margin-bottom: 16px;
}

.card.selected {
  box-shadow: 0 0 0 3px var(--color-blue);
  text-decoration: none !important;
}

.card .cover {
  padding-bottom: 56.25%;
  /* 16:9 aspect ratio */
  position: relative;
  overflow: hidden;
}

.card .cover img {
  position: absolute;
  width: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.card .title {
  padding: 8px 12px 4px;
  font-size: calc(var(--font-size) - 1px);
  font-weight: 500;
  line-height: calc(var(--line-height) - 6px);
}

.card .tag {
  background-color: var(--background-color);
  color: var(--color-blue);
  margin-left: 6px;
  padding: 1px 6px 2px;
  border-radius: 2px;
  font-size: calc(var(--font-size) - 2px);
  line-height: calc(var(--line-height) - 6px);
}

/* mobile */

@media all and (max-width: 640px) {
  :root {
    --header-height: 56px;
    --icon-size: 24px;
  }

  #projects {
    grid-template-columns: repeat(2, 1fr);
  }

  #newBtn {
    right: 20px;
    bottom: 20px;
  }

  #panel #expandButton {
    display: block;
  }

  #toLeftButton {
    display: none;
  }

  #panel {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    right: 0;
    z-index: 1000;
    overflow-x: hidden;
    transition: 0s 0s height;
    border: none;
    height: var(--header-height);
    transition: 0s 0.2s height;
  }

  #panel.open {
    height: 100%;
    transition: 0s 0s height;
  }

  #panelScrim {
    pointer-events: none;
    background-color: rgba(0, 0, 0, 0);
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 1000;
    pointer-events: none;
    transition: 0.2s background-color;
  }

  #panel.open #panelScrim {
    pointer-events: auto;
    background-color: rgba(0, 0, 0, 0.4);
  }

  #contentWrapper {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    background: var(--background-color);
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
    width: calc(100vw - 60px);
    max-width: 360px;
    z-index: 10000;
    transition: 0.25s transform;
    overflow-x: hidden;
    margin-right: -380px;
    line-height: 2rem;
  }

  #panel.open #contentWrapper {
    transform: translate3d(-380px, 0, 0);
  }

  #viewer,
  iframe {
    left: 0;
    top: var(--header-height);
    width: 100%;
    height: calc(100% - var(--header-height));
  }

  #viewer {
    padding-left: 0;
    margin-left: 0;
    z-index: 99;
  }

  #leftExpandButton {
    display: none;
    visibility: hidden;
  }

  #collapseButton {
    display: none;
  }

  #newBtn {
    width: 80px;
    height: 80px;
  }
}