/*
 * Paper
 * A simple, clean, flexible Hugo theme
 * https://github.com/nanxiaobei/hugo-paper
 * Designed by 南小北 (https://lee.so/)
 * Updated in 2021.8.20
 */

/* Theme
 -------------------------------------------------- */
:root {
  --gap: 3.5rem;
  --y-gap: 8rem;
  --wide: 140rem;
  --narrow: 80rem;
  --side: calc((var(--wide) - var(--narrow)) / 2);
  --header: 8rem;
  --footer: 8rem;

  --light: 255, 255, 255;
  --dark: 22, 22, 22;
  --hljs-bg: #111;
}

.dark {
  --light: 22, 22, 22;
  --dark: 255, 255, 255;
  --hljs-bg: #282828;
}

html {
  -webkit-tap-highlight-color: transparent;
  font-size: 8px;
}

body {
  --white: rgba(var(--light), 1);
  --black: rgba(var(--dark), 1);

  --pro: rgba(var(--dark), 1);
  --lit: rgba(var(--dark), 0.64);
  --air: rgba(var(--dark), 0.48);
  --fog: rgba(var(--dark), 0.12);

  margin: 0;
  padding-inline: var(--gap);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell,
    'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 2rem;
  line-height: 1.8;
  color: var(--pro);
  word-break: break-word;
  background: var(--white);
  transition: background 0.4s ease-out;
}

.not-ready,
.not-ready *,
.not-ready *::before {
  transition: none !important;
}

@media (max-width: 1199px) {
  html {
    font-size: 7px;
  }
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-size: inherit;
  font-weight: 700;
  line-height: 1.2;
}

p {
  margin: 0;
}

strong,
b {
  font-weight: 500;
}

ul,
ol {
  padding: 0;
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

table {
  width: 100%;
  border-spacing: 0;
  border-collapse: collapse;
}

button,
input,
textarea {
  padding: 0;
  font: inherit;
  background: transparent;
  border: 0;
  outline: 0;
  -webkit-appearance: none;
}

button,
input[type='button'],
input[type='submit'] {
  cursor: pointer;
}

input,
textarea {
  padding: 0;
  border: 0;
}

input:-webkit-autofill,
textarea:-webkit-autofill {
  box-shadow: 0 0 0 6rem var(--white) inset;
}

img {
  display: block;
  max-width: 100%;
}

/* Header
 -------------------------------------------------- */
.header {
  display: flex;
  max-width: var(--wide);
  height: var(--header);
  margin-inline: auto;
}

.header a {
  display: flex;
  flex-shrink: 0;
  align-items: center;
}

.logo {
  display: flex;
  min-width: calc(var(--side) - var(--gap));
  margin-right: var(--gap);
  overflow: auto;
}

.site-name {
  padding-bottom: 0.2rem;
  font-size: 3.5rem;
  font-weight: 700;
}

.btn-theme {
  width: 3rem;
  margin-left: 2rem;
  overflow: hidden;
  font-size: 3rem;
  cursor: pointer;
}

.btn-theme::before {
  white-space: nowrap;
  content: '☀️🌕🌖🌗🌘🌑🌙';
  transition: transform 0.4s steps(6);
}

.dark .btn-theme::before {
  transform: translateX(-18rem);
}

.menu {
  display: flex;
  margin-right: var(--gap);
  overflow: auto;
}

.menu a + a {
  margin-left: var(--gap);
}

.social-icon {
  width: 3rem;
  margin-left: 3rem;
  background-repeat: no-repeat;
  background-position: center;
}

.social-icon:first-of-type {
  margin-left: auto;
}

.social-icon.twitter {
  background-image: url('./twitter.svg');
}

.social-icon.github {
  background-image: url('./github.svg');
}

.social-icon.instagram {
  background-image: url('./instagram.svg');
}

.dark .social-icon {
  filter: invert(1);
}

@media (max-width: 1199px) {
  .logo {
    min-width: auto;
  }

  [data-menu='true'] {
    --header: 16rem;
  }

  [data-menu='true'] .header {
    position: relative;
  }

  [data-menu='true'] .header > * {
    height: calc(var(--header) / 2);
  }

  [data-menu='true'] .menu {
    position: absolute;
    inset: auto 0 0;
    margin-right: 0;
    border-bottom: 1px solid var(--fog);
  }
}

/* Main
 -------------------------------------------------- */
.main {
  max-width: var(--narrow);
  min-height: calc(100vh - var(--header) - var(--footer));
  padding-block: var(--y-gap);
  margin-inline: auto;
}

.page-title {
  margin-bottom: calc(var(--y-gap) - 1rem);
  font-size: 4rem;
  font-weight: 400;
  color: var(--air);
}

.page-nav {
  display: flex;
  margin-top: 5rem;
}

.page-nav a {
  line-height: 5.5rem;
  color: var(--white);
  background: var(--black);
  border-radius: 0.5rem;
  padding-inline: 2.5rem;
}

.page-nav .next {
  margin-left: auto;
}

/* Post entry
 -------------------------------------------------- */
.post-entry {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 2rem;
  transition: transform 0.1s;
}

.post-entry:first-of-type {
  margin-top: -2rem;
}

.post-entry:active {
  transform: scale(0.99);
}

.post-entry h2 {
  padding-right: 2rem;
  font-size: 3rem;
}

.post-entry time {
  flex-shrink: 0;
  font-size: 1.8rem;
  color: var(--air);
}

.post-entry a {
  position: absolute;
  inset: 0;
}

/* Post single
 -------------------------------------------------- */
.post-title {
  display: flex;
  margin-bottom: calc(var(--y-gap) + 1rem);
}

.post-title aside {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  width: var(--side);
  padding-right: var(--gap);
  margin-left: calc(var(--side) * -1);
  font-size: 1.5rem;
  color: var(--air);
  transform: translateY(0.4rem);
}

.post-title h1 {
  font-size: 5rem;
  transform: translateX(-0.3rem);
}

.post-tags {
  margin-top: 7rem;
}

.post-tags a {
  display: inline-block;
  padding-inline: 2rem;
  line-height: 5rem;
  color: var(--lit);
  border: 1px solid var(--fog);
  border-radius: 0.5rem;
}

.post-tags a + a {
  margin-left: 0.5rem;
}

.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: var(--y-gap);
  color: var(--white);
  background: var(--black);
  margin-inline: calc(var(--gap) * -1);
  border-radius: 0.5rem;
}

.post-nav a {
  display: flex;
  align-items: center;
  width: 50%;
  padding: var(--gap);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.post-nav a span + span {
  margin-left: 1rem;
}

.post-nav .prev {
  padding-right: 1rem;
}

.post-nav .next {
  justify-content: flex-end;
  padding-left: 1rem;
  margin-left: auto;
}

.post-comments {
  margin-top: var(--y-gap);
}

@media (max-width: 1199px) {
  .post-title {
    display: block;
  }

  .post-title aside {
    flex-direction: row;
    width: auto;
    padding-right: 0;
    margin-bottom: 0.5rem;
    margin-left: 0;
    transform: none;
  }

  .post-title aside span::before {
    content: '·';
    margin-inline: 0.5rem;
  }
}

/* Post content
 -------------------------------------------------- */
.post-content {
  font-size: 2.2rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  margin-block: 3rem;
}

.post-content h1 {
  margin-top: var(--y-gap);
  font-size: 5rem;
}

.post-content h2 {
  margin-top: 6rem;
  font-size: 4rem;
}

.post-content h3 {
  font-size: 3rem;
}

.post-content h4 {
  font-size: 2.5rem;
}

.post-content h5 {
  font-size: 2rem;
}

.post-content h6 {
  font-size: 1.5rem;
}

.post-content a {
  padding-bottom: 1px;
  border-bottom: 1.5px solid var(--pro);
}

.post-content a code {
  margin-inline: 0;
  border-bottom-right-radius: 0;
  border-bottom-left-radius: 0;
}

.post-content del {
  text-decoration: none;
  background: linear-gradient(to right, var(--pro) 100%, transparent 0) 0 50% / 1px 1px repeat-x;
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content dl {
  margin-bottom: 3rem;
}

.post-content ul,
.post-content ol {
  padding-left: 2.5rem;
}

.post-content li {
  margin-top: 0.6rem;
}

.post-content li p {
  margin-bottom: 0;
}

.post-content dl {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
}

.post-content dt {
  width: 25%;
  font-weight: 500;
}

.post-content dd {
  width: 75%;
  padding-left: 1.3rem;
  margin-left: 0;
}

.post-content dt ~ dt,
.post-content dd ~ dd {
  margin-top: 1.3rem;
}

.post-content table {
  margin-bottom: 4rem;
}

.post-content table th,
.post-content table:not(.highlighttable) td {
  min-width: 10rem;
  padding: 1.5rem 1rem;
  line-height: 1.5;
  border-bottom: 1px solid var(--fog);
}

.post-content table th {
  font-size: 1.6rem;
  text-align: left;
}

.post-content table:not(.highlighttable) td code:only-of-type {
  margin-inline: 0;
}

.post-content .highlight,
.post-content pre {
  margin: 0 calc(var(--gap) * -1) 4rem;
  overflow-x: auto;
  background: var(--hljs-bg) !important;
  border-radius: 0.5rem;
}

.post-content ul pre {
  margin-left: calc(var(--gap) * -2);
}

.post-content .highlight pre {
  margin-inline: 0;
  margin-bottom: 0;
}

/* table */
.post-content .highlighttable {
  table-layout: fixed;
}

.post-content .highlighttable td:first-of-type {
  width: 5rem;
}

.post-content .highlighttable td .linenodiv {
  padding-right: 0 !important;
}

.post-content .highlighttable td .linenodiv pre,
.post-content .highlighttable td .highlight {
  margin-bottom: 0;
}

.post-content .highlighttable td .highlight pre code::-webkit-scrollbar {
  display: none;
}

/* inline */
.post-content .highlight span {
  background: transparent !important;
}

.post-content code {
  padding: 0.5rem 1rem;
  margin-inline: 0.5rem;
  font-family: Menlo, Monaco, 'Courier New', Courier, monospace;
  font-size: 0.8em;
  line-height: 1.5;
  background: rgba(var(--dark), 0.06);
  border-radius: 0.3rem;
}

.post-content pre code {
  display: block;
  padding: var(--gap);
  margin-inline: 0;
  color: rgba(255, 255, 255, 0.8);
  background: transparent;
  border-radius: 0;
}

.post-content blockquote {
  padding: 0 0 0 calc(var(--gap) - 0.4rem);
  margin: 0 0 0 calc(var(--gap) * -1);
  border-left: 0.4rem solid var(--pro);
}

.post-content hr {
  height: 1px;
  margin-block: 8rem;
  background: var(--fog);
  border: 0;
}

.post-content iframe {
  width: 100%;
  background: var(--black);
}

/* Footer
 -------------------------------------------------- */
.footer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: var(--narrow);
  min-height: var(--footer);
  font-size: 1.6rem;
  color: var(--lit);
  border-top: 1px solid var(--fog);
  margin-inline: auto;
}

.footer p + p::before {
  content: '·';
  margin-inline: 0.6rem;
}

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

/* 404
 -------------------------------------------------- */
.title-404 {
  position: absolute;
  inset: var(--header) 0 calc(var(--footer) * 2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16rem;
}