/* Reset */

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

* {
  margin: 0;
  padding: 0;
  font: inherit;
}

/* CUSTOM COLOURS */

:root {
  --primary-bg-color: #f3f3f3;
  --secondary-bg-color: #444;
  --light-bg-color: #fff;

  --accent-color: #4e878c;

  --primary-text-color: #01161e;
  --secondary-text-color: #fff;
}

body {
  font-family: 'Poppins', sans-serif;
  font-weight: 300;
  background-color: var(--primary-bg-color);
  color: var(--primary-text-color);
}

/* GENERAL ELEMENTS */

h1 {
  font-size: 2.6rem;
}

a:visited,
a:link {
  color: var(--accent-color);
}

button {
  padding: 0.5em 1.8em;
  border-radius: 5px;
  background-color: var(--accent-color);
  color: var(--secondary-text-color);
  border: none;
  cursor: pointer;
}

/* GENERAL LAYOUT */

.container {
  width: 80%;
  margin: 0 auto;
}

html {
  height: 100%;
}

body {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

footer {
  text-align: center;
  grid-row-start: 3;
  grid-row-end: 4;
  padding-top: 2em;
  padding-bottom: 0.5em;
}

/* NAVIGATION */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 9rem;
  width: 100%;
  padding: 4rem 6rem;
}

.nav__links {
  display: flex;
  align-items: center;
  list-style: none;
  font-size: 1.2rem;
}

/* CARDS */

.card-group {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 5rem;
}

.card {
  background-color: var(--light-bg-color);
  color: var(--primary-text-color);
  padding: 1.2rem;
  font-size: 1.2rem;
}

.card .title {
  font-weight: bold;
}

.button-group {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.remove {
  background-color: var(--light-bg-color);
  color: var(--primary-text-color);
  border: 1px solid var(--primary-text-color);
  padding: 0.2em 1em;
  font-size: 1rem;
}

/* TOGGLE BUTTON */

button.toggle {
  background-color: var(--primary-bg-color);
  color: var(--primary-text-color);
  width: 170px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.2em 0.4em;
  border-radius: 25px;
  font-size: 1rem;
}

.toggle::before,
.toggle::after {
  border-radius: 28px;
  padding: 0.2rem 0.6rem;
}

.toggle::before {
  content: 'read';
}

.toggle::after {
  content: 'unread';
}

.toggle[aria-pressed='true'].toggle::before,
.toggle[aria-pressed='false'].toggle::after {
  background-color: var(--accent-color);
  color: var(--secondary-text-color);
}

/* MODAL */

.modal {
  max-width: 80%;
  margin: 0 auto;
  background-color: var(--light-bg-color);
  color: var(--primary-text-color);
  border: none;
  padding: 2rem;
  top: 15%;
}

.form-header {
  display: flex;
  justify-content: space-between;
  gap: 5rem;
}

.btn-close-modal {
  background-color: var(--light-bg-color);
  color: var(--primary-text-color);
  font-size: 2rem;
  font-weight: 600;
  padding: 0;
  margin: 0;
  cursor: pointer;
  align-self: start;
  margin-top: -1rem;
}

.modal-heading {
  align-self: end;
  font-size: 1.5rem;
  font-weight: 600;
}

.modal::backdrop {
  background: #000;
  opacity: 30%;
}

.form {
  display: grid;
  gap: 0.2rem;
}

.form > label,
.form > div,
.form > button {
  margin-block-start: 1rem;
  font-size: 1.2rem;
}

.form input {
  font-size: 1.2rem;
  padding: 0.8rem 1.5rem;
  border: 1px solid #ddd;
  border-radius: 0.5rem;
}

.form button {
  max-width: 90%;
  justify-self: center;
}

.checkbox-input {
  display: flex;
  align-items: center;
  font-size: 1.2rem;
  gap: 1rem;
}

#read-checkbox {
  width: 20px;
  height: 20px;
}

/* MEDIA QUERIES */

@media only screen and (max-width: 620px) {
  .nav {
    flex-direction: column;
    padding: 3rem 2rem;
    gap: 2rem;
  }
}