:root {
  --thistle: #cdb4dbff;
  --fairy-tale: #ffc8ddff;
  --carnation-pink: #ffafccff;
  --uranian-blue: #bde0feff;
  --light-sky-blue: #a2d2ffff;
}

/* Body */
body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background: linear-gradient(135deg, var(--thistle), var(--light-sky-blue));
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
}

/* App container */
.app-container {
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.6);
  padding: 20px 30px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
  text-align: center;
  width: 400px;
  max-width: 90%;
  backdrop-filter: blur(10px); /* glassmorphism effect */
}

h1 {
  margin-top: 10px;
  margin-bottom: 20px;
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  background: linear-gradient(90deg, var(--carnation-pink), var(--uranian-blue));
  animation: fadeSlideIn 1s ease-in-out;
  border: 3px solid transparent;
  border-radius: 12px;
  padding: 10px 20px;
  display: inline-block;
  background-image: linear-gradient(90deg, var(--carnation-pink), var(--uranian-blue));
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}




@keyframes fadeSlideIn {
  0% {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Input + button */
.input-group {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

#taskInput {
  flex: 1;
  padding: 10px 15px;
  border: 2px solid var(--fairy-tale);
  border-radius: 12px 0 0 12px;
  outline: none;
  background: #fff;
  font-size: 1rem;
  transition: 0.3s;
}

#taskInput:focus {
  border-color: var(--uranian-blue);
  box-shadow: 0 0 8px rgba(189, 224, 254, 0.6);
}

#addBtn {
  padding: 10px 15px;
  border: none;
  border-radius: 0 12px 12px 0;
  background: var(--carnation-pink);
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 0.3s ease, transform 0.2s ease;
}

#addBtn:hover {
  opacity: 0.8;
  transform: scale(1.05);
}

/* Task List */
#taskList {
  list-style: none;
  padding: 0;
  margin: 0;
}

#taskList li {
  background: #fff;
  margin: 10px 0;
  padding: 12px 15px;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#taskList li:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

/* Delete button */
#taskList li button {
  background: var(--fairy-tale);
  border: none;
  border-radius: 8px;
  padding: 6px 12px;
  color: #333;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.3s ease, transform 0.2s ease;
}

#taskList li button:hover {
  opacity: 0.8;
  transform: scale(1.05);
  background: var(--carnation-pink);
  color: #fff;
}