* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --background: hsl(180, 100%, 30%);
  --content-background: hsl(0, 0%, 75%);
  --content-border: hsl(0, 0%, 40%);
  --odd-content: hsl(0, 0%, 65%);
  --text: hsl(0, 0%, 5%);
  --header: hsl(240, 100%, 50%);
  --white-text: hsl(0, 0%, 95%);
  --checked: hsl(130, 90%, 50%);
  --hover-submit: hsl(130, 90%, 30%);
  --delete-button: hsl(0, 90%, 50%);
  --hover-delete: hsl(0, 90%, 30%);
  --edit-button: hsl(65, 90%, 50%);
  --hover-edit: hsl(65, 80%, 40%);
}

body {
  background-color: var(--background);
  color: var(--text);
  display: grid;
  place-content: center;
  margin-top: 2svh;
}

header {
  background-color: var(--header);
  color: var(--white-text);
  height: 15svh;
  width: 75svw;
  display: grid;
  place-content: center;
  border: 5px var(--content-border) solid;
  outline: 2px var(--content-background) solid;
}

header > h1 {
  text-align: center;
}

#submit-task {
  padding: 1em;
  background-color: var(--checked);
  transition: background-color 0.2s ease-in;
}

#submit-task:hover {
  background-color: var(--hover-submit);
}

#list-container {
  margin: 0 auto;
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  height: 80svh;
  overflow: auto;
  width: 100%;
  background-color: var(--content-background);
  overflow-y: scroll;
  border: 3px solid var(--content-border);
  border-right: none;
  outline: 2px var(--content-background) solid;
}

#list-container::-webkit-scrollbar {
  width: 1em;
}

#list-container::-webkit-scrollbar-track {
  background-color: hsl(0, 0%, 60%);
  border-left: 2px solid hsl(0, 0%, 65%);
  border-top: 2px solid hsl(0, 0%, 65%);
  border-right: 2px solid hsl(0, 0%, 40%);
  border-bottom: 2px solid hsl(0, 0%, 40%);
}

#list-container::-webkit-scrollbar-thumb {
  background-color: var(--content-background);
  border: 2px solid hsl(0, 0%, 40%);
  box-shadow: inset -1px -1px 0 hsl(0, 0%, 95%), inset 1px 1px 0 hsl(0, 0, 60%);
}

#list-container::-webkit-scrollbar-button:single-button:vertical:decrement {
  background-color: hsl(0, 0%, 70%);
  height: 1em;
  display: block;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16'><polygon points='8,4 12,10 4,10' fill='black'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  border: 2px solid hsl(0, 0%, 40%);
}

#list-container::-webkit-scrollbar-button:single-button:vertical:increment {
  background-color: hsl(0, 0%, 70%);
  height: 1em;
  display: block;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16'><polygon points='4,6 12,6 8,12' fill='black'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  border: 2px solid hsl(0, 0%, 40%);
}

.complete-filter-container {
  display: flex;
  gap: 1em;
  margin: 0.5em 0;
  transition: color 0.2s ease;
}

.complete-filter-container:hover {
  color: var(--checked);
  text-shadow: 1px 1px 1px var(--text);
}

#complete-filter {
  background-color: var(--header);
  border-color: var(--content-background);
}

.complete-task-checkbox {
  transition: color 0.2s ease;
}

.complete-task-checkbox:hover {
  color: var(--checked);
  text-shadow: 1px 1px 1px var(--text);
}

input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  background-color: var(--content-background);
  margin: 0;
  font: inherit;
  color: var(--text);
  width: 1.15em;
  height: 1.15em;
  border: 0.15em solid var(--text);
  border-radius: 0.15em;
  display: grid;
  place-content: center;
}

input[type="checkbox"]::before {
  content: "";
  width: 0.65em;
  height: 0.65em;
  transform: scale(0);
  transition: 0.2s transform ease-in-out;
  box-shadow: inset 1em 1em var(--checked);
}

input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.task-container {
  display: flex;
  flex-flow: row nowrap;
  justify-content: center;
  gap: 1em;
  padding: 2em 0;
  width: 100%;
}

.task-container:nth-child(even) {
  background-color: var(--odd-content);
}

.complete-task-checkbox {
  display: flex;
  flex-flow: row nowrap;
  align-items: center;
  gap: 0.5em;
}

button {
  padding: 0.5em 0.75em;
  transition: background-color 0.2s ease-in;
}

.delete-btn {
  background-color: var(--delete-button);
  color: var(--white-text);
}

.delete-btn:hover {
  background-color: var(--hover-delete);
}

.edit-btn {
  background-color: var(--edit-button);
}

.edit-btn:hover {
  background-color: var(--hover-edit);
}

.editing {
  background-color: var(--checked);
}

.editing:hover {
  background-color: var(--hover-submit);
}

input[type="text"],
.description {
  text-align: center;
  padding: 1em;
}

input:focus {
  outline: 3x solid var(--delete-button);
}

.modal {
  margin: 15% auto;
  display: grid;
  place-content: center;
  gap: 2em;
  background-color: var(--content-background);
  border: 3px solid var(--text);
  background-image: url("./assets/warning.svg");
  background-position: 50% 25%;
  background-repeat: no-repeat;
  background-size: 5em 5em;
}

dialog::backdrop {
  background-color: hsla(0, 0%, 0%, 0.6);
  -webkit-backdrop-filter: blur(2.5px);
  backdrop-filter: blur(2.5px);
}

.modal-header {
  display: grid;
  place-content: flex-end;
  background-color: var(--header);
  height: 2em;
  border-bottom: 3px solid var(--text);
}

.modal-header-btn {
  padding: 0.2em 0.4em;
  margin: 0.2em 0.2em;
}

.modal-btn {
  margin: 1em;
}

.modal > p {
  margin: 4em 1em 0 1em;
}

.confirm {
  background-color: var(--content-background);
}

.confirm:hover {
  background-color: var(--odd-content);
}

.modal-btn-container {
  margin: 0 auto;
}