body {
  font-family: 'Open Sans', sans-serif;
  margin: 0;
  background-color: #e1e1e1;;
}

header {
    text-align: center;
    background-color: #04aa30;
    color: rgb(251, 244, 43);
    padding: 0.6rem;
    margin-bottom: 7.8%;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

#todo-container {
  margin: 0 auto;
  box-sizing: border-box;
  max-width: 460px;
  margin-bottom: 7rem;
  padding: 2rem;
  background-color: rgb(244, 245, 236);
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  animation: fadeIn 1s ease-in;
}

h2 {
  text-align: center;
  color: #333;
  margin-top: 1%;
}

.input-group {
  display: flex;
  margin-bottom: 15px;
}

#taskInput {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px 0 0 5px;
}

#addTaskBtn {
  padding: 10px 20px;
  border: none;
  background-color: #28a745;
  color: white;
  border-radius: 0 5px 5px 0;
  cursor: pointer;
}

#addTaskBtn:hover {
  background-color: #218838;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

li {
  padding: 10px;
  background: #f9f9f9;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  word-break: break-word;
  cursor: pointer
}

li:hover{
    color: #0117df;
}

li.completed {
  text-decoration: line-through;
  color: gray;
}

.delete-btn {
  background-color: red;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
}

#clearAllBtn {
  font-size: 15px;
  margin-top: 15px;
  width: 100%;
  padding: 10px;
  border: none;
  background-color: #dc3545;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

#clearAllBtn:hover {
  background-color: #c82333;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  animation: fadeIn 0.5s ease-in-out;
}

.modal-content button {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.modal-content button:hover {
  background-color: #2931c6;
}


footer {
  text-align: center;
  padding: 0.65rem;
  background-color: #1e1e2f;
  color: white;
}


@media (max-width: 600px) {

  html, body {
    height: 100%;
  }

  body {
    display: flex;
    flex-direction: column;
  }

  #todo-container {
    margin-top: auto;
    margin-bottom: auto;
    width: 90%;
    padding: 1.5rem;
  }

  .input-group {
    flex-direction: column;
  }

  #taskInput{
    width: 93.56%;
    border-radius: 5px;
    margin: 0 0 10px 0;
  }

  #addTaskBtn {
    width: 100%;
    border-radius: 5px;
    margin: 0 0 10px 0;
  }

  footer {
    margin-top: auto; 
  }
}