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

html, body {
  height: 100%;
  width: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f5f5f5;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

button {
  cursor: pointer;
}

.mainBox {
  background-color: #1a1a2e;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #f0f0f0;
  border-radius: 16px;
  width: 90%;
  min-width: 500px;
  padding: 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.title {
  text-align: center;
  margin-bottom: 20px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

#inputForm {
  display: flex;
  gap: 0;
  height: 42px;
  margin-bottom: 20px;
}

#textInput {
  flex: 1;
  border-radius: 8px 0 0 8px;
  border: none;
  padding: 0 14px;
  font-size: 14px;
  background-color: #2a2a4a;
  color: #f0f0f0;
  outline: none;
}

#textInput::placeholder {
  color: #888;
}

#textInput:focus {
  background-color: #32325a;
}

#addTask {
  border-radius: 0 8px 8px 0;
  border: none;
  padding: 0 18px;
  background-color: #4f46e5;
  color: white;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.2s;
}

#addTask:hover {
  background-color: #4338ca;
}

h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #888;
  margin-bottom: 10px;
}

#myList {
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style: none;
  min-height: 200px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 4px;
  margin-bottom: 16px;
}

#myList li {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #2a2a4a;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px;
  padding: 10px 12px;
  transition: background-color 0.15s;
}

#myList li:hover {
  background-color: #32325a;
}

#myList li input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #4f46e5;
  cursor: pointer;
  flex-shrink: 0;
}

#myList li span:first-of-type {
  flex: 1;
  font-size: 14px;
}

.deleteTask,
.editTask {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 12px;
  color: #aaa;
  transition: all 0.15s;
}

.deleteTask:hover {
  background-color: rgba(220, 38, 38, 0.15);
  color: #f87171;
  border-color: rgba(220, 38, 38, 0.3);
}

.editTask:hover {
  background-color: rgba(79, 70, 229, 0.15);
  color: #a5b4fc;
  border-color: rgba(79, 70, 229, 0.3);
}

p {
  text-align: center;
  font-size: 13px;
  color: #888;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

p span#completedTask {
  color: #4ade80;
  font-weight: 600;
}

p span#uncompletedTask {
  color: #f87171;
  font-weight: 600;
}

.completed span:first-of-type {
  text-decoration: line-through;
  color: #555;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-thumb {
  background-color: #4f46e5;
  border-radius: 4px;
}

::-webkit-scrollbar-track {
  background-color: transparent;
}