:root {
  --copy: "Lato";
  --paper: hsla(260, 35%, 90%, 0.95);
  --ink: hsla(270, 8%, 20%, 0.98);
  --brand: hsla(0, 100%, 67%, 0.98);
  --shade: hsla(270, 8%, 20%, 0.1);
  --space: 2rem;
  --box: 18rem;
  --container: clamp(var(--box), calc(100vw - calc(var(--space) * 2)), 74rem);
  --finger: 48px;
  --line-length: 60ch;
}

* {
  box-sizing: border-box;
}

body,
html {
  padding: 0;
  margin: 0;
}

a,
a:any-link,
button {
  color: currentColor;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s;
}

:focus {
  outline: none;
}

a:hover,
a:focus,
button:hover,
button:focus {
  color: var(--brand);
}

a:focus,
button:focus {
  outline: 2px dashed var(--brand);
}

button {
  appearance: none;
  border: none;
  background: transparent;
}

ul,
ul li {
  list-style: none;
  margin: 0;
  padding: 0;
}

body {
  font: 100%/1.5 var(--copy), system-ui, sans-serif;
  background-color: var(--paper);
  color: var(--ink);
  display: grid;
  gap: var(--space);
  grid-template:
    ". ...... ." var(--space)
    ". header ." min-content
    ". main   ." minmax(75vh, 1fr)
    ". footer ." min-content
    ". ...... ." var(--space) /
    minmax(var(--space), 1fr) var(--container) minmax(var(--space), 1fr);
  place-content: center;
}

header {
  grid-area: header;
  display: grid;
  grid-template:
    "logo space button" var(--finger) /
    var(--finger) 1fr var(--finger);
}

header h1 {
  grid-area: logo;
  margin: 0;
}

main {
  grid-area: main;
  display: flex;
  flex-flow: row wrap;
  gap: var(--space);
}

main h2 {
  width: 100%;
  text-align: center;
  font-size: 2em;
}

footer {
  grid-area: footer;
  display: grid;
  grid-template: "github space" var(--finger) / var(--finger) 1fr;
}

footer a {
  grid-area: github;
}

.menu {
  background-color: var(--ink);
  color: var(--paper);
  height: 100vh;
  width: max-content;
  padding: var(--space);
  z-index: 1;
  position: absolute;
  left: -100vw;
}

.menu.is-active {
  left: 0;
}

.copy {
  max-width: var(--line-length);
}

.is-invisible {
  position: absolute;
  left: -100vw;
}

.is-invisible:focus {
  left: 0;
}

#toggle {
  grid-area: button;
}

.logo,
footer svg {
  width: var(--finger);
  height: var(--finger);
}

.copy ol {
  list-style: decimal;
  padding-left: 1.25rem;
}

.copy ol li {
  margin-bottom: 0.5rem;
}

#add {
  background-color: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1.2rem;
  border-radius: 0.3rem;
  cursor: pointer;
}

#add:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

#status {
  font-weight: bold;
  min-height: 1.5rem;
}

#output {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space);
  margin-top: var(--space);
}

.added-item {
  background-color: #ffffff;
  padding: var(--space);
  box-shadow: 2px 4px 16px var(--shade);
}