/* Custom properties ----------------------------------------------------------------------- */
:root {
  color-scheme: light dark;
  /* colors*/
  --color-dark: 218, 100%, 15%; /*#000e26*/
  --color-medium-dark: 207, 97%, 24%; /*#01223d*/
  --color-medium: 197, 99%, 37%; /*#00435e*/
  --color-medium-light: 195, 49%, 73%; /*#5ea3ba*/
  --color-light: 194, 41%, 88%; /*#84cae0*/
  /*font sizes*/
  --font-size-900: 6.25rem;
  --font-size-800: 5rem;
  --font-size-700: 3.5rem;
  --font-size-650: 2.5rem;
  --font-size-600: 1.75rem;
  --font-size-500: 1.5rem;
  --font-size-400: 1.25rem;
  --font-size-300: 1rem;
  --font-size-200: 0.85rem;
  --font-size-150: 0.75rem;
  --font-size-100: 0.5rem;
  /*font family*/
  --font-family-sans-serif: "Ebrima", sans-serif;
}

/* https://piccalil.li/blog/a-modern-css-reset ---------------------------------------------- */

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

/* Remove default margin */
* {
  margin: 0;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  word-spacing: inherit;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul, ol {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}
html, body {
    height: 100%;
}

/* Set core body defaults */
body {
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img, picture, svg {
  max-width: 100%;
  display: block;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
   scroll-behavior: auto;
  }
  
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/*Typography*/
.sofia-regular {  font-family: "Sofia", cursive; font-style: normal;}

/*Header -------------------------------------------------------------- */
header {
  padding-block: var(--font-size-400);
  border-bottom: 5px solid light-dark(hsl(var(--color-dark) ), hsl(var(--color-medium-light)));  
  position:sticky;
  top: 0;
  text-align: center;
  background-color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
  display: grid;
  grid-template-columns: 8fr 1fr;
}

.skip-nav {
  padding: 1rem;
  position: absolute;
  transform: translateY(-120%);
  transition: transform 100ms ease-in;
  left: 0.5rem;
  background-color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
}

.skip-nav:focus {
  transform: translateY(0);
}

nav {
  padding-inline: var(--font-size-800);
}

nav ul {
  display: flex;
  justify-content: space-between;
}

nav a {
  text-decoration: none;
  font-size: var(--font-size-600);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  font-family: var(--font-family-sans-serif);
  padding: var(--font-size-150);
}

nav a:hover, nav a:focus-visible {
  background-color: light-dark(hsl(var(--color-light)), hsl(var(--color-medium-dark)));
}

.theme-menu {
  border: none;
  outline-offset: 1px;
  outline: 5px solid hsl(var(--color-medium-light));
  border-radius: 50%;
  background-color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
}

.theme-menu img {
  width: var(--font-size-650);
  height: var(--font-size-650);
  align-self: center;
}

.button-themes {
  position: absolute;
  display: none;
  z-index: 2;
  right: var(--font-size-650);
  top: var(--font-size-800);
}

.theme-option {
  width: 100%;
  border: 5px solid light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  padding: var(--font-size-150);
  background-color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
}

.theme-menu:hover, .theme-menu:focus-visible, .theme-option:hover, .theme-option:focus-visible {
  background-color: light-dark(hsl(var(--color-light)), hsl(var(--color-medium-dark)));
}

 .theme-menu[aria-pressed = "true"] + .button-themes {
  display: block;
}
/*Main -------------------------------------------------------------- */
main {
  margin-inline: var(--font-size-800);
}

body {
  background-color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
}

h1 {
  font-size: var(--font-size-650);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  padding-block: var(--font-size-100);
  font-family: var(--font-family-sans-serif);
}

img {
  width: var(--font-size-800);
  height: var(--font-size-800);
}

h2 {
  font-size: var(--font-size-600);
  padding-block: var(--font-size-100);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  font-family: var(--font-family-sans-serif);
}

h3 {
  font-size: var(--font-size-600);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  border-top: 5px solid light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  font-family: var(--font-family-sans-serif);
}

.author {
  display: flex;
  align-items: center;
  gap: var(--font-size-400);
}

h4 {
  font-size: var(--font-size-400);
  padding-block: var(--font-size-100);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  font-family: var(--font-family-sans-serif);
}

p {
  font-size: var(--font-size-500);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  padding-block: var(--font-size-100);
  font-family: var(--font-family-sans-serif);
  text-wrap: pretty;
}

p a {
  text-decoration: none;
  font-size: var(--font-size-500);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  font-family: var(--font-family-sans-serif);
}

i {
  font-style: italic;
}

strong {
  font-weight: 700;
}

ol {
  list-style-type: decimal;
  list-style-position: inside;
  padding-left: var(--font-size-700);
}

ol li {
  font-size: var(--font-size-500);
  color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
  padding-block: var(--font-size-100);
  font-family: var(--font-family-sans-serif);
}

.sharethis-inline-share-buttons {
  padding-block: var(--font-size-400);
}

/*Footer -------------------------------------------------------------- */
footer {
  background-color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
}

footer p {
  color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
  padding-block: var(--font-size-100);
  font-size: var(--font-size-150);
  margin-inline: var(--font-size-800);
}

footer a {
  color: light-dark(hsl(var(--color-medium-light)), hsl(var(--color-dark)));
  padding-block: var(--font-size-100);
  font-size: var(--font-size-150);
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background-color: light-dark(hsl(var(--color-dark)), hsl(var(--color-medium-light)));
}

::-webkit-scrollbar-thumb {
  background-color: hsl(var(--color-medium-dark) );
}

::-webkit-scrollbar-thumb:hover {
  background-color: hsl(var(--color-medium) );
}