/*! concrete.css v3.0.0 | MIT License | github.com/louismerlin/concrete.css */

/**
 * Set universal color variables
 */

:root {
  --fg: #111;
  --bg: #fff;
}

/**
 * Invert the colors if the user has dark mode activated.
 */

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #fff;
    --bg: #111;
  }
}

/**
 * 1. Modify the base font-size to 1.25rem, to make everything larger.
 * 2. Set box-sizing globally to handle padding and border widths.
 */

html {
  font-size: 1.25rem; /* 1 */
  box-sizing: border-box; /* 2 */
}

/**
 * 1. Continue the global box-sizing modification.
 * 2. Set the underline size for all elements.
 */

*, ::after, ::before {
  box-sizing: inherit; /* 1 */
  text-decoration-thickness: .1rem; /* 2 */
}

/**
 * 1. Remove body margin.
 * 2. Set the text and background color to white and black by default.
 * 3. Set the font-family to Helvetica, or equivalent.
 */

body {
  margin: 0; /* 1 */
  background: var(--bg); /* 2 */
  color: var(--fg); /* 2 */
  font-family: Helvetica, Arial, sans-serif; /* 3 */
}

/**
 * Set the link color to black
 */

a {
  color: var(--fg);
}

/**
 * 1. Stretch figure to full width of the section.
 */
figure {
  margin: 0; /* 1 */
}

/**
 * 1. Right-align text 
 * 2. Make figure caption a little smaller than normal text.
 * 3. Add border at bottom.
 * 4. Add spacing after the element.
 */
figcaption {
  text-align: right; /* 1 */
  font-size: 0.8em; /* 2 */
  border-bottom: .2rem solid var(--fg); /* 3 */
  padding-bottom: .2rem; /* 4 */
}

/**
 * 1. Set the max width of images to 100%, so that they don't overflow.
 * 2. Set the height of images relative to their width.
 */

img {
  max-width: 100%; /* 1 */
  height: auto; /* 2 */
}

/**
 * Add some padding around the main sections.
 */

main section + section {
  padding: 2rem 0;
}

/** 
 * 1. Center the root main/header/footer elements horizontally.
 * 2. Set the width of the elements to 640px, with padding for mobile screens.
 */

body > header,
body > main,
body > footer {
  margin: auto; /* 1 */
  max-width: 660px; /* 2 */
  padding-left: 10px; /* 2 */
  padding-right: 10px; /* 2 */
  width: 100%; /* 2 */
}

/**
 * 1. Add some padding around the main header.
 * 2. Increase the size of text in the main header.
 */

body > header {
  padding-top: 8rem; /* 1 */
  padding-bottom: 8rem; /* 1 */
  font-size: 1.2em; /* 2 */
}

h1 { font-size: 2em; }
h2 { font-size: 1.5em; }
h3 { font-size: 1.17em; }
h4 { font-size: 1.00em; }
h5 { font-size: 0.83em; }
h6 { font-size: 0.67em; }

/**
 * Center the text in the footer.
 */

footer {
  text-align: center;
}

/**
 * 1. Change the style of the button.
 * 2. Set the color and border of the button.
 * 3. Add the pointer cursor when hovering a button.
 */

button,
input[type="button"],
input[type="reset"],
input[type="submit"] {
  display: inline-block; /* 1 */
  vertical-align: middle; /* 1 */
  padding: .2rem .5rem; /* 1 */
  font-size: 1rem; /* 1 */
  font-weight: normal; /* 1 */
  margin-bottom: .5rem; /* 1 */
  background: var(--bg); /* 2 */
  color: var(--fg); /* 2 */
  border: .1rem solid var(--fg); /* 2 */
  border-radius: 0; /* 2 */
  cursor: pointer; /* 3 */
}

/**
 * 1. Set the border of a disabled button to be dashed.
 * 2. Add the not-allowed cursor when hovering a disabled button.
 */

button:disabled,
input[type="button"]:disabled,
input[type="reset"]:disabled,
input[type="submit"]:disabled{
  border-style: dashed; /* 1 */
  cursor: not-allowed; /* 2 */ 
}

/**
 * Set the list bullet to square.
 */

ul {
  list-style: square;
}

/**
 * Set a margin around the navigation bar
 */
nav {
  margin: 2rem 0;
}

/**
 * 1. Remove padding around the navigation bar's inner unordered list
 * 2. Remove list style for the navigation bar's inner unordered list
 */
nav ul {
  padding: 0; /* 1 */
  list-style: none; /* 2 */
}

/**
 * 1. Set margins around the navigation bar's inner unordered list items
 * 2. Make navigation bar unordered list elements render horizontally
 */
nav ul li {
  margin: 0 .2rem; /* 1 */
  display: inline-block; /* 2 */
}

/**
 * Set the border around a fieldset.
 */

fieldset {
  border: .1rem solid var(--fg);
}

/**
 * 1. Modify the display of labels and legends.
 * 2. Add a margin underneath.
 */

label, legend {
  display: block; /* 1 */
  font-weight: bold; /* 1 */
  margin-bottom: .4rem; /* 2 */
}

/** 
 * 1. Change the appearance of the text input.
 * 2. Set the color and border of the text input.
 */

input[type="email"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="text"],
input[type="url"],
textarea,
select {
  -webkit-appearance: none; /* 1 */
  -moz-appearance: none; /* 1 */
  appearance: none; /* 1 */
  box-shadow: none; /* 1 */
  box-sizing: inherit; /* 1 */
  padding: .2rem .5rem; /* 1 */
  width: 100%; /* 1 */
  font-size: 1rem; /* 1 */
  color: var(--fg); /* 2 */
  background-color: var(--bg); /* 2 */
  border: .1rem solid var(--fg); /* 2 */
  border-radius: 0; /* 2 */
  font-family: Helvetica, Arial, sans-serif; /* 3 */
}

/**
 * Set margin for form elements.
 */

fieldset, input, select, textarea {
  margin: 0 0 .8rem 0;
}

/**
 * 1. Set the font color for the placeholder in inputs.
 * 2. Set font-style to italic for the placeholder in inputs.
 */

input::placeholder,
textarea::placeholder {
  color: var(--fg); /* 1 */
  font-style: italic; /* 2 */
  opacity: 1;
}

/**
 * 1. Expand width to 100% for the table element.
 * 2. Remove the distance between the borders of adjacent table cells.
 */

table {
  width: 100%; /* 1 */
  border-spacing: 0; /* 2 */
}

/**
 * Add padding around table cells.
 */

td, th {
  padding: .4rem;
}

/**
 * Remove left padding for first cell in a row.
 */

td:first-child, th:first-child {
  padding-left: 0;
}

/**
 * Remove right padding for last cell in a row.
 */

td:last-child, th:last-child {
  padding-right: 0;
}

/**
 * 1. Add a border under the table header.
 * 2. Align the text to the left in the table header.
 */

th {
  border-bottom: .1rem solid var(--fg); /* 1 */
  text-align: left; /* 2 */
}

/**
 * Add a thiner border under table rows.
 */

td {
  border-bottom: .05rem solid var(--fg);
}

/**
 * 1. Change the margins and padding.
 * 2. Add a border on the left of these elements.
 * 3. Set the y overflow to hidden to hide the navigation bar.
 */

blockquote, pre {
  margin-left: 0; /* 1 */
  margin-right: 0; /* 1 */
  padding: .5rem .8rem; /* 1 */
  border-left: .1rem solid var(--fg); /* 2 */
  overflow-y: hidden; /* 3 */
}

/**
 * 1. Set the rest of the border of the preformatted element to dotted.
 * 2. Re-set the left border style.
 */

pre {
  border: .05rem dotted var(--fg); /* 1 */
  border-left: .1rem solid var(--fg); /* 2 */
}

/**
 * 1. Modify the display of the code block.
 * 2. Reduce the font size of the code block.
 */

pre > code {
  white-space: pre; /* 1 */
  display: block; /* 1 */
  font-size: .8rem; /* 2 */
}

/**
 * 1. Modify the display of the progress bar in all browsers.
 * 2. Set the colors and border of the progress bar.
 */

progress {
  -moz-appearance: none; /* 1 */
  -webkit-appearance: none; /* 1 */
  display: block; /* 1 */
  height: .5rem; /* 1 */
  overflow: hidden; /* 1 */
  padding: 0; /* 1 */
  width: 100%; /* 1 */
  background: var(--bg); /* 2 */
  color: var(--fg); /* 2 */
  border: .1rem solid var(--fg); /* 2 */
  border-radius: 0; /* 2 */
}

/**
 * Set the background color of the webkit progress bar.
 */

progress::-webkit-progress-bar {
  background-color: var(--bg);
}

/**
 * Set the color of the webkit progress bar.
 */

progress::-webkit-progress-value {
  background-color: var(--fg);
}

/**
 * Set the color of the mozilla progress bar.
 */

progress::-moz-progress-bar {
  background-color: var(--fg);
}

/**
 * Set the border for the horizontal rule.
 */

hr {
  border: .05rem solid var(--fg);
}