main.css

:root {
  --background-color: #111827; /* Dark background */
  --text-color: #ffffff; /* White text */
  --input-background: #374151; /* Dark input background */
  --done-color: green; /* Green for Done button */
  --delete-color: crimson; /* Red for Delete button */
  --gradient-color-start: #ec4899; /* Pink for Add/Edit buttons */
  --gradient-color-end: #8b5cf6; /* Purple for Add/Edit buttons */
}

.light-theme {
  --background-color: #7b87c4; /* Light background */
  --text-color: #eaeaea; /* Dark text */
  --input-background: #ffffff; /* Light input background */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Fira Sans", sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--background-color); /* Dynamic background */
  color: var(--text-color); /* Dynamic text color */
}

header {
  padding: 2rem 1rem;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 300;
  margin-bottom: 1rem;
  color: var(--text-color); /* Dynamic text color */
}

#new-task-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

input,
button {
  appearance: none;
  border: none;
  outline: none;
  background: none;
}

#new-task-input,
#new-task-date {
  flex: 1;
  padding: 1rem;
  border-radius: 1rem;
  color: var(--text-color); /* Dynamic text color */
  font-size: 1.25rem;
  background-color: var(--input-background); /* Dynamic input background */
  border: 1px solid var(--input-background);
}

#new-task-input::placeholder,
#new-task-date::placeholder {
  color: var(--text-color); /* Dynamic text color */
  padding-right: 1rem;
}
#new-task-priority {
  padding-left: 0.5rem;
}

#new-task-submit {
  background-image: linear-gradient(
    to right,
    var(--gradient-color-start),
    var(--gradient-color-end)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase; /* All caps */
  transition: 0.4s;
}

#new-task-submit:hover {
  opacity: 0.8;
}

#theme-selector {
  margin-top: 10px;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  background-color: var(
    --input-background
  ); /* Button background changes dynamically */
  color: var(--text-color); /* Button text color */
  border: 1px solid var(--input-background);
  cursor: pointer;
}

main {
  flex: 1;
  padding: 2rem 1rem;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.task-list {
  padding: 1rem;
}

.task {
  display: flex;
  justify-content: space-between;
  background-color: #1f2937; /* Dark task background */
  padding: 1rem;
  border-radius: 1rem;
  margin-bottom: 1rem;
  border: 1px solid #374151;
}

.text {
  color: var(--text-color); /* Dynamic text color */
}

.date {
  color: var(--text-color); /* Dynamic text color */
}

.actions {
  display: flex;
  align-items: center;
}

.done {
  color: var(--done-color); /* Green Done button */
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase; /* All caps */
  margin-right: 0.5rem;
  cursor: pointer;
  transition: 0.4s;
}

.done:hover {
  opacity: 0.8;
}

.done:active {
  opacity: 0.6;
}

.delete {
  color: var(--delete-color); /* Red Delete button */
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase; /* All caps */
  cursor: pointer;
  transition: 0.4s;
}

.delete:hover {
  opacity: 0.8;
}

.edit {
  background-image: linear-gradient(
    to right,
    var(--gradient-color-start),
    var(--gradient-color-end)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 700;
  margin-right: 0.5rem;
  text-transform: uppercase; /* All caps */
  transition: 0.4s;
}

.edit:hover {
  opacity: 0.8;
}

.edit:active {
  opacity: 0.6;
}