:root {
  --bg: #f3f4f6;
  --ink: #3b2f33;
  --pill: #fff;
  --accent: #0040ff;
  --accent-ink: white;
  --btn: white;
  --btn-ink: #486ad0;
  --radius: 20px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

body {
  margin: 0;
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

header {
  padding: 24px 16px 12px;
  text-align: center;
}
header h1 {
  margin: 0 0 10px;
  font-size: 36px;
}

.dateNav {
  display: flex;
  align-items: center;
  gap: 18px;
  justify-content: center;
}

/* 입력 폼 */

.formContainer {
  max-width: 440px;
  margin: 20px auto 10px;
  background: var(--pill);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.formContainer input {
  flex: 1; /* 남는 공간 사용 */
  min-width: 0;
  border: none;
  outline: none;
  padding: 12px 14px;
  font-size: 16px;
  border-radius: 18px;
}
.count {
  margin-left: auto;
  color: #6b7280;
  font-weight: 600;
}
.submitButton {
  border: none;
  padding: 10px 16px;
  border-radius: 18px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  cursor: pointer;
}

/* 리스트 */
.todoContainer {
  display: flex;
  justify-content: center;
}
ul {
  list-style: none; /* 점 제거 */
  padding: 0;
  margin: 0;
}
li.todo {
  display: flex;
  align-items: center;
  gap: 14px;
  background: whitesmoke;
  color: black;
  border-radius: 28px;
  padding: 14px 16px;
  margin: 16px 0;
  box-shadow: var(--shadow);
}
.todo input[type="checkbox"] {
  width: 22px;
  height: 22px;
}
.todo label {
  flex: 1;
  font-size: 18px;
}
.todo.done label {
  opacity: 0.5;
  text-decoration: line-through;
}
.del {
  border: none;
  padding: 10px 20px;
  border-radius: 12px;
  background: var(--btn);
  color: var(--btn-ink);
  font-weight: 800;
  cursor: pointer;
}