:root {
  --bg-color: #fff5f0;
  --text-color: #5d4037;
  --container-bg: #ffffff;
  --accent-color: #ffab91;
  --button-bg: #ffccbc;
  --delete-btn-bg: #e65272;
  --delete-btn-hover-bg: #c4415b;
  --add-btn-bg: #799567;
  --add-btn-hover-bg: #5c7348;
}

/* 다크 테마 - 블루베리 컨셉 */
body.blueberry-mode {
  --bg-color: #1a1c2c;
  --text-color: #e0e0ff;
  --container-bg: #252a41;
  --accent-color: #7986cb;
  --button-bg: #3f51b5;
  --delete-btn-bg: #a180ad;
  --delete-btn-hover-bg: #7b5e8c;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  font-family: Pretendard;
  max-width: 500px;
  margin: auto;
  transition: all 0.4s ease;
}

.container {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  margin: auto;
}

#date-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
}

title {
  font-size: 24px;
  font-weight: bold;
}

#today-date {
  font-size: 18px;
}
#today-day {
  font-size: 18px;
}
#prev-btn,
#next-btn {
  background-color: transparent;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-color);
}
#prev-btn:hover,
#next-btn:hover {
  color: var(--accent-color);
}

#add-btn {
  background-color: var(--add-btn-bg);
  border: none;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
  color: white;
  border-radius: 100px;
  text-align: center;
}
#add-btn:hover {
  background-color: var(--add-btn-hover-bg);
}
#todo-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 14px;
  background-color: transparent;
  color: var(--text-color);
}
#todo-count {
  font-size: 14px;
  color: var(--text-color);
  margin-left: 10px;
  text-align: center;
  display: flex;
  align-items: center;
}
#todo-form {
  display: flex;
  flex-direction: row;
  background-color: var(--container-bg);
  border: none;
  padding: 10px;
  border-radius: 100px;
  gap: 10px;
}

.input-group {
  display: flex;
  align-items: center;
  background-color: white;
  padding: 8px 10px 8px 16px;
  border-radius: 30px; /* 둥근 모양 */
  gap: 15px;
}
.todo-list {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: auto;
  margin: 20px;
  width: 100%;
}
.todo-item {
  display: flex;
  justify-content: space-between; /* 양 끝 정렬 */
  align-items: center;
  padding: 10px 20px;
}
.todo-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  margin-right: 10px;
}

#todo-text {
  word-break: break-all;
  white-space: normal;
  overflow: visible;
  text-align: left;
  line-height: 1.4;
}

/* 완료 시 취소선 효과 */
.todo-item.completed span {
  text-decoration: line-through;
  color: #aaa;
}

.delete-btn {
  background-color: var(--delete-btn-bg);
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.delete-btn:hover {
  background-color: var(--delete-btn-hover-bg);
}

/* 1. 기본 체크박스 숨기기 */
.checkbox-container input {
  display: none;
}

/* 2. 커스텀 체크박스 외형 */
.custom-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--accent-color);
  border-radius: 6px; /* 살짝 둥근 사각형 */
  display: inline-block;
  position: relative;
  cursor: pointer;
  transition: all 0.2s ease;
  background-color: transparent;
  margin: 2px;
}

/* 3. 체크되었을 때 배경색 변경 */
.checkbox-container input:checked + .custom-checkbox {
  background-color: var(--accent-color);
}

/* 4. 체크 표시(V) 그리기 (가상 요소 활용) */
.custom-checkbox::after {
  content: "";
  position: absolute;
  display: none;

  /* 체크 모양 만들기 */
  left: 7px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* 5. 체크되었을 때 V 표시 보이기 */
.checkbox-container input:checked + .custom-checkbox::after {
  display: block;
}

#theme-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--button-bg);
  border: none;
  font-size: 28px;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 폰트 */
@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Thin.woff2")
    format("woff2");
  font-weight: 100;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-ExtraLight.woff2")
    format("woff2");
  font-weight: 200;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Light.woff2")
    format("woff2");
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Regular.woff2")
    format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Medium.woff2")
    format("woff2");
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-SemiBold.woff2")
    format("woff2");
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Bold.woff2")
    format("woff2");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-ExtraBold.woff2")
    format("woff2");
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Pretendard";
  src: url("https://cdn.jsdelivr.net/gh/projectnoonnu/pretendard@1.0/Pretendard-Black.woff2")
    format("woff2");
  font-weight: 900;
  font-display: swap;
}