.header {
  margin: var(--rhythm) 0;
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
}

.header .avatar {
  border-radius: 50%;
  padding: 2.5px; /* Makes the image 160px */
}

.header h2 {
  text-align: center;
  color: var(--color-text);
  margin: 0;
  line-height: calc(1.5 * var(--rhythm));
}

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

:root {
  --font-scale: calc(2 * 1.618); /* 2x golden ratio */
  --base-rhythm: 1.778;
  --base-font-size: 18px;

  --rhythm: calc(1rem * var(--base-rhythm));
  --rhythm-1: calc(1rem * var(--base-rhythm));
  --rhythm-2: calc(2rem * var(--base-rhythm));
  --rhythm-3: calc(3rem * var(--base-rhythm));
  --rhythm-4: calc(4rem * var(--base-rhythm));
  --rhythm-5: calc(5rem * var(--base-rhythm));
  --rhythm-6: calc(6rem * var(--base-rhythm));

  --color-primary: rgb(255, 152, 0);
  --color-primary-dark: rgb(245, 124, 0);
  --color-accent: rgb(255, 64, 129);
  --color-accent-dark: rgb(194, 24, 91);

  --color-bg: #fff;
  --color-bg-gray: #f9f9f9;
  --color-text: hsl(0, 0%, 0%, 0.8);
  --color-text-gray: hsl(0, 0%, 40%, 0.8);
  --color-text-link: #00f;

  --spacing-1: 4px;
  --spacing-2: 8px;
  --spacing-3: 12px;
  --spacing-4: 16px;
  --spacing-5: 20px;
  --spacing-6: 24px;
  --spacing-7: 28px;
  --spacing-8: 32px;
  --spacing-9: 36px;
  --spacing-10: 40px;
  --spacing-11: 44px;
  --spacing-12: 48px;
  --spacing-13: 52px;
  --spacing-14: 56px;
  --spacing-15: 60px;
  --spacing-16: 64px;

  --font-size-2xl: calc(1rem * pow(var(--font-scale), 1));
  --font-size-xl: calc(1rem * pow(var(--font-scale), calc(3 / 5)));
  --font-size-lg: calc(1rem * pow(var(--font-scale), calc(2 / 5)));
  --font-size-base: calc(1rem * pow(var(--font-scale), calc(0 / 5)));
  --font-size-sm: calc(1rem * pow(var(--font-scale), calc(-1 / 5)));
  --font-size-xs: calc(1rem * pow(var(--font-scale), calc(-1.5 / 5)));

  --sm: 640px;
  --md: 768px;
  --lg: 1024px;
  --xl: 1280px;
  --2xl: 1536px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #000;
    --color-bg-gray: #222;
    --color-text: hsl(0, 0%, 100%, 0.8);
    --color-text-2: hsl(0, 0%, 80%, 0.6);
    --color-text-gray: hsl(0, 0%, 60%, 0.8);
    --color-text-link: #6969ff;
  }
}

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Open Sans", sans-serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
  font-variation-settings: "wdth" 100;
  font-size: var(--base-font-size);
  line-height: var(--rhythm);
}

body {
  margin: 0;
}

body.debug {
  background-image: repeating-linear-gradient(
    to bottom,
    #000,
    #000 1px,
    transparent 1px,
    transparent var(--rhythm)
  );
}

a {
  color: var(--color-text-link);
}

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

h1,
h2,
h3,
h4,
h5,
h6,
hgroup,
dl,
dd,
p,
figure,
pre,
table,
fieldset,
blockquote,
form,
noscript,
iframe,
hr,
address {
  margin: 0 0 var(--rhythm) 0;
  padding: 0;
}

ul,
ol {
  margin: 0 0 var(--rhythm) var(--spacing-4) ;
  padding: 0;
  list-style-position: outside;
  list-style-image: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Playfair Display", serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
}

h1 {
  font-size: var(--font-size-2xl);
  line-height: var(--rhythm-2);
}
h2 {
  font-size: var(--font-size-xl);
  line-height: var(--rhythm-2);
}
h3 {
  font-size: var(--font-size-lg);
  line-height: var(--rhythm-1);
}
h4 {
  font-size: var(--font-size-base);
  line-height: var(--rhythm-1);
}
h5 {
  font-size: var(--font-size-sm);
  line-height: var(--rhythm-1);
  font-weight: 700;
}
h6 {
  font-size: var(--font-size-xs);
  line-height: var(--rhythm-1);
  font-weight: 700;
}

.posts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.posts .date {
  font-size: var(--font-size-sm);
  color: var(--color-text-gray);
  margin: 0;
}
blockquote {
  background: var(--color-bg-gray);
  margin: 0 0 var(--rhythm);
  padding: 15px 20px 15px 45px;
  position: relative;
  text-align: justify;
  border-left: 10px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);

  &:before {
    color: var(--color-text-gray);
    content: "\201C";
    font-size: 60px;
    font-weight: bold;
    position: absolute;
    left: 10px;
    top: 30px;
  }

  &:after {
    content: "";
  }

  p {
    display: inline;
  }
}

article aside {
  background: var(--color-bg-gray);
  margin: 0 0 var(--rhythm);
  padding: 40px 25px 20px 25px;
  position: relative;
  text-align: justify;
  border-left: 10px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);
  font-size: 80%;
  line-height: 1.75;
  overflow-x: auto;

  &:before {
    color: var(--color-text-gray);
    content: "Side note";
    font-size: 18px;
    font-weight: bold;
    position: absolute;
    left: 25px;
    top: 5px;
  }

  &.code-example {
    border-left: 10px solid var(--color-primary);
    border-right: 2px solid var(--color-primary);

    &:before {
      content: "Code example";
    }
  }

  & pre {
    margin: 0;
  }
}

.menu {
  margin: var(--spacing-16) 0;
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
}

.menu-icon,
.close-icon {
  display: none;
  margin: 10px;
}

.menu-toggle {
  display: none;
  opacity: 0;
  z-index: 2;
  margin: 10px;

  position: absolute;
  width: 38px;
  height: 38px;
  cursor: pointer;
}

.menu .nav-link {
  display: block;
  color: var(--color-text);
  margin: 0;
  font-size: var(--font-size-lg);
}

@media (max-width: 1023px) {
  .menu-toggle {
    display: block;
  }
  .menu-toggle:checked ~ .close-icon {
    display: inline-block;
  }
  .menu-toggle:not(:checked) ~ .menu-icon {
    display: inline-block;
  }
  .menu-toggle:not(:checked) ~ div .drawer {
    width: 0;
    border-right: 0;
  }
  .menu-toggle:checked ~ div .drawer {
    width: 240px;
  }
}

.drawer {
  width: 240px;
  overflow: hidden;
  border-right: 1px solid rgba(0, 0, 0, 0.5);
  min-height: 100vw;
  flex-grow: 0;
  flex-shrink: 0;
}

.page-content {
  padding: var(--rhythm);
  padding-top: 0;
  flex-grow: 1;
  max-width: calc(100vw - var(--rhythm-2));
}

@media (min-width: 1024px) {
  .page-content {
    max-width: 72ch;
    padding: var(--rhythm-2);
    padding-top: var(--rhythm-2);
  }
}
.post {
  margin-bottom: var(--rhythm-2);
}

.post .date {
  display: block;
  margin-bottom: var(--rhythm);
}

.post .content {
  text-align: justify;
}

.post .content > ul,
.post .content > ol,
.post .content > p {
  overflow-x: auto;
}

.post .content > p > code {
  word-break: break-all;
}

.post .divider {
  margin-bottom: var(--rhythm-2);
}
.external-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.external-links-icons {
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  align-items: center;
}

.external-links-icons a {
  display: block;
  margin: 0 5px 0 0;
  width: 32px;
  height: auto;
}

.external-links-icons a:last-item {
  margin-right: 0;
}

.external-links-icons img {
  display: block;
  margin: 0;
}

@media (prefers-color-scheme: dark) {
  .external-links-icon img {
    filter: invert(1);
  }
}

.external-links-texts {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 80%;
  line-height: 1.25;
  gap: var(--spacing-1);
}

.external-links-texts a {
  display: block;
  text-decoration: none;
  color: var(--color-text);
}