style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap");

:root {
  --primary-color: #87ceeb;
  --accent: #ffc0cb;
  --highlight: #dda0dd;
  --text: #5a5a5a;
  --white: #ffffff;
  --success: #90ee90;
}

::selection {
  background-color: var(--primary-color);
}

html {
  font-size: 62.5%;
  height: 100%;
}

body {
  font-family: "Poppins", sans-serif;
  margin: 0;
  text-align: center;
  background: linear-gradient(to right, var(--primary-color), #d3d3d3);
}

input {
  color: var(--text);
  border-radius: 5px;
  outline: none;
  margin: 0.5rem;
  border: none;
}

input:focus {
  color: var(--text);
}

li {
  color: var(--primary-color);
  font-size: 2rem;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
  border-bottom: solid 1px var(--primary-color);
  margin-bottom: 1rem;
  text-align: left;
}

i {
  color: var(--text);
  font-size: 1.5rem;
  margin-left: 0.8rem;
}

nav {
  display: flex;
  flex-direction: row-reverse;
  padding: 2rem;
}

button:hover,
button:focus {
  transform: scale(0.96);
}

.list-container {
  display: inline-block;
  max-width: 550px;
}

.input-container {
  background-color: var(--white);
  max-width: 300px;
  padding: 1rem 0rem;
  margin: 1.5rem auto;
}

.addBtn {
  border: none;
  border-radius: 5px;
  background-color: var(--primary-color);
  color: #fff;
  padding: 0.7rem 1.5rem;
  cursor: pointer;
  margin-right: 1rem;
}

.title {
  color: var(--white);
  font-size: 3.5rem;
  letter-spacing: 4px;
  margin: 1.5rem 0;
}

.list {
  list-style: none;
  background-color: var(--white);
  max-width: 300px;
  padding: 1rem 0rem;
  margin: auto;
}

.settings {
  font-size: 2rem;
  color: var(--text);
  cursor: pointer;
  transition: 0.2s;
  z-index: 1;
}

.settings:hover {
  transform: scale(1.2);
}

.fa-pen-to-square {
  margin-right: 1rem;
  cursor: pointer;
}

.done {
  text-decoration: line-through var(--text);
}

.error {
  border-color: red;
}

.sidebar {
  position: fixed;
  top: 0;
  right: -400px;
  width: 300px;
  height: 100%;
  background-color: var(--white);
  transition: 0.2s ease-in-out;
}

.sidebar.toggle {
  right: 0;
}

.settings-btn {
  padding: 0.5rem 1rem;
  border-radius: 5px;
  color: #fcf7f7;
  background-color: var(--primary-color);
  border: none;
  margin: 1.5rem 1.2rem 0 0;
  cursor: pointer;
  transition: transform 0.1s linear;
}

.file-upload span {
  color: var(--text);
  font-size: 1.3rem;
  font-weight: bolder;
}

input[type="file"] {
  display: none;
}

.fa-upload {
  color: #fcf7f7;
  margin-right: 0.2rem;
}

.custom-file-upload {
  color: #fcf7f7;
  font-size: 1.3rem;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  display: inline-block;
  background-color: var(--primary-color);
  cursor: pointer;
  transition: transform 0.1s linear;
  margin-right: 0.5rem;
}

.custom-file-upload:hover,
.custom-file-upload:focus {
  transform: scale(0.96);
}

input[type="checkbox"].toggle {
  opacity: 0;
  position: absolute;
}

input[type="checkbox"] + label {
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
  margin: 1rem;
}

input[type="checkbox"].toggle:checked + label {
  color: var(--primary-color);
}

input[type="checkbox"] + label::before {
  content: "";
  width: 4rem;
  height: 2rem;
  background-color: #ddd;
  border-radius: 1rem;
  margin: 0.5rem 1.5rem;
}

input[type="checkbox"].toggle:checked + label::before {
  background-color: #f3f3f3;
}

input[type="checkbox"] + label::after {
  position: absolute;
  content: "";
  width: 2rem;
  height: 2rem;
  background-color: var(--text);
  border-radius: 1rem;
  left: 0;
  transition: 0.2s linear;
  margin-left: 1rem;
}

input[type="checkbox"].toggle:checked + label::after {
  transform: translateX(3.5rem);
  background-color: var(--primary-color);
}

.orienation {
  cursor: pointer;
}

@media screen and (min-width: 768px) {
  .title {
    font-size: 4rem;
  }

  .addBtn {
    font-size: 1.5rem;
  }
}