@import url("https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,200..1000;1,200..1000&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  font-family: "Nunito", sans-serif;
  background-color: #111;
  background-image: url("../images/background.png");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.container {
  width: 100%;
  height: 100%;
  padding: 0 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.todo-app {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  border-radius: 20px;
  border: 3px solid rgba(255, 255, 255, 0.18);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 30px;
  color: #fff;
  box-shadow: 0 0 100px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
}

.todo-app h1 {
  font-size: 2rem;
}

.stat-container {
  padding: 15px 20px;
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.details {
  width: 100%;
}

.details h3 {
  color: #fff;
}

#progressbar {
  width: 100%;
  height: 7px;
  background: rgba(255, 194, 209, 0.3);
  border-radius: 20px;
  position: relative;
  margin-top: 15px;
}

#progress {
  width: 50%;
  height: 100%;
  background: #ff0000;
  border-radius: 20px;
  transition: width 0.3 ease;
}

#numbers {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: #ff003c;
  border: 2px solid rgba(255, 194, 209, 0.3);
  font-weight: bold;
  border-radius: 50%;
  font-size: 1.5rem;
}

.input-area {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.input-area input {
  flex: 1;
  padding: 10px 17px;
  border: none;
  outline: none;
  border-radius: 22px;
  font-size: 1.1rem;
  color: #dbdbdb;
  background: rgba(255, 194, 209, 0.3);
}

#task-input {
  border: 1px solid #ccc;
  transition: border-color 0.3s ease, border-width 0.3s ease;
}

.input-area input::placeholder {
  color: #bcbcbc;
}

.input-area button {
  margin-left: 10px;
  padding: 8px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.18);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.1rem;
  color: #fff;
  background: rgba(255, 194, 209, 0.3);
  cursor: pointer;
  transition: all 0.2s ease;
}

.input-area button:hover {
  transform: scale(1.1);
  background: #ff6f91;
}

#error-message {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  color: red;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  margin-top: 4px;
  height: auto;
}

#error-message.visible {
  opacity: 1;
  pointer-events: auto;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20%,
  60% {
    transform: translateX(-5px);
  }
  40%,
  80% {
    transform: translateX(5px);
  }
}

#task-input.error {
  border-color: red;
  animation: shake 0.3s;
  animation-fill-mode: forwards;
}

.todos-container {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#task-list {
  width: 100%;
}

#task-list li {
  position: relative;
  display: flex;
  margin-bottom: 10px;
  padding: 8px 10px;
  border-radius: 30px;
  align-items: center;
  justify-content: space-between;
  font-size: 1.2rem;
  color: #ffffff;
  background: rgba(255, 194, 209, 0.3);
  transition: box-shadow 0.2s ease;
}

#task-list li:hover {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#task-list li .checkbox {
  position: relative;
  min-width: 20px;
  height: 20px;
  appearance: none;
  cursor: pointer;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transition: all 0.2s ease;
}

#task-list li .checkbox:checked {
  background: #ff6f91;
  transform: scale(1.1);
}

#task-list li .checkbox:checked::before {
  content: "\2713";
  font-size: 0.9rem;
  line-height: 1;
  color: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  user-select: none;
}

#task-list li span {
  flex: 1;
  margin-left: 10px;
  word-wrap: break-word;
}

#task-list li.completed span {
  text-decoration: 2px line-through #000;
  color: #000;
}

.task-buttons {
  display: flex;
  gap: 10px;
  margin-right: auto;
}

.task-buttons button {
  background: rgba(255, 194, 209, 0.3);
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  color: #ffffff;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2 ease;
  display: flex;
  justify-content: center;
  align-items: center;
}

.task-buttons button:hover {
  transform: scale(1.2);
}

.task-buttons .edit-btn {
  background: #0059ff;
}

.task-buttons .delete-btn {
  background: #000000;
}

@media (max-width: 600px) {
  .container {
    margin: 0 20px;
    padding: 0 10px;
  }

  .todo-app {
    padding: 1.5rem;
    gap: 20px;
  }

  #numbers {
    width: 60px;
    height: 60px;
    font-size: 1rem;
  }

  .input-area input {
    font-size: 1rem;
  }

  #task-list li {
    font-size: 1rem;
  }
}