:root {
  --body-bg: hsl(235, 21%, 11%);
  --card-bg: hsl(235, 24%, 19%);
  --header: hsl(234, 39%, 85%);
  --Purple-100-hover: hsl(236, 33%, 92%);
  --Purple-600: hsl(235, 16%, 43%);
  --Purple-700: hsl(233, 14%, 35%);
  --Purple-800: hsl(237, 14%, 26%);
  --task-color: hsl(236, 9%, 61%);

  --all: hsl(220, 98%, 61%);
  --Check-Background-top: hsl(192, 100%, 67%);
  --check-bg-bottom: hsl(280, 87%, 65%);
}

.dark-theme {
  --card-bg: hsl(0, 0%, 98%);
  --header: hsl(234, 39%, 85%);
  --body-bg: hsl(233, 11%, 84%);
  --Gray-600: hsl(236, 9%, 61%);
  --task-color: hsl(235, 19%, 35%);
  background-image: url(images/bg-mobile-light.jpg);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Josefin Sans", sans-serif;
  transition: all 0.35s;
}

html {
  font-size: 62.5%;
}

body {
  background-image: url(images/bg-mobile-dark.jpg);
  background-size: 100% auto;
  background-repeat: no-repeat;
  background-position: top;
  background-color: var(--body-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8rem 2rem;
}

.header {
  display: flex;
  justify-content: space-between;
  width: 100%;
  align-items: center;
  margin-bottom: 3rem;
}

.heading {
  color: var(--header);
  text-transform: uppercase;
  font-size: 3rem;
  letter-spacing: 0.6rem;
  font-weight: 700;
}
.sun,
.moon {
  width: 100%;
  margin: 0;
  cursor: pointer;
}

.moon,
.sunh {
  display: none;
}

.moonh {
  display: block;
}

.input-container {
  display: flex;
  width: 100%;
  justify-content: space-between;
  padding: 2rem;
  background-color: var(--card-bg);
  border-radius: 0.8rem;
  align-items: center;
}

#input {
  width: 100%;
  background-color: transparent;
  border: none;
  color: var(--task-color);
  font-size: 1.8rem;
  margin-left: 1rem;
  outline: none;
}

input[type="radio"] {
  appearance: none;
  accent-color: transparent;
  border: 2px solid var(--Purple-600);
  height: 20px;
  width: 20px;
  outline: 0;
  border-radius: 10px;
  cursor: pointer;
}

.card {
  display: flex;
  width: 100%;
  margin-top: 2rem;
  flex-direction: column;
  background-color: var(--card-bg);
  border-radius: 0.8rem;
}

.card .task-container:last-child {
  border-bottom: none;
}

.task-container {
  display: flex;
  border-bottom: var(--Purple-600) solid 1px;
  align-items: center;
  padding: 2rem;
  justify-content: space-between;
  overflow: hidden;
}

main {
  min-width: 470px;
}

.task {
  color: var(--task-color);
  font-size: 1.5rem;
}

.check {
  height: 20px;
  width: 20px;
  padding: 0.5rem;
  border-radius: 50%;
  background: linear-gradient(
    to bottom,
    var(--Check-Background-top),
    var(--check-bg-bottom)
  );
}

@media screen and (min-width: 768px) {
  .dark-theme {
    background-image: url(images/bg-desktop-light.jpg);
  }

  body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    align-items: center;
    background-image: url(images/bg-desktop-dark.jpg);
  }

  main {
    width: 600px;
  }
}