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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
  background-color: white;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  margin-top: 20px;
}

header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid #eee;
}

.header-controls {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.header-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.header-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.auth-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.auth-status {
  font-size: 0.9em;
  color: #555;
}

.auth-btn {
  padding: 6px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background-color: #fff;
  cursor: pointer;
  font-size: 0.9em;
  font-weight: 600;
  transition: all 0.3s ease;
}

.auth-btn:hover {
  background-color: #f0f0f0;
  border-color: #ccc;
}

h1 {
  color: #2c3e50;
  font-size: 2.2em;
}

.date-selector {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.date-selector label {
  font-weight: 600;
  color: #555;
}

.date-navigation {
  display: flex;
  align-items: center;
  gap: 5px;
}

.nav-btn,
.today-btn {
  min-width: 44px;
  min-height: 44px;
  padding: 8px 14px;
  border: 2px solid #ddd;
  border-radius: 8px;
  background-color: white;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  touch-action: manipulation;
}

.nav-btn:hover {
  background-color: #3498db;
  color: white;
  border-color: #3498db;
}

.today-btn {
  background-color: #27ae60;
  color: white;
  border-color: #27ae60;
}

.today-btn:hover {
  background-color: #229954;
  border-color: #229954;
}

.date-selector input {
  padding: 8px 12px;
  border: 2px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
}

.timesheet {
  border: 2px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
}

.header-row {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  background-color: #34495e;
  color: white;
  font-weight: 600;
}

.header-row>div {
  padding: 15px;
  text-align: center;
  border-right: 1px solid #2c3e50;
  font-size: 1em;
  font-weight: 600;
}

.header-row>div:last-child {
  border-right: none;
}

.planned-label,
.time-label,
.actual-label {
  color: white;
  font-size: inherit;
  font-weight: inherit;
}

/* 헤더의 '시간' 라벨이 본문 시간 라벨 스타일에 영향을 받지 않도록 명시 */
.header-row .time-label {
  color: white !important;
  font-size: inherit !important;
  font-weight: inherit !important;
}

.time-entry {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  border-bottom: 2px solid #ccc;
  background-color: white;
  user-select: none;
  position: relative;
}

.time-entry:nth-child(even) .time-slot {
  background-color: #f8f9fa;
}

.time-entry:nth-child(even) {
  background-color: white;
}

.time-slot-container {
  padding: 8px;
  text-align: center;
  font-weight: 600;
  background-color: #ecf0f1;
  border-right: 2px solid #ddd;
  /* 시간열 우측 테두리 두께 */
  border-left: 2px solid #ddd;
  /* 시간열 좌측 테두리 두께 - 우측과 동일하게 */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.time-slot-container .time-label {
  font-size: 14px;
  font-weight: 700;
  color: #2c3e50;
}

.input-field {
  padding: 8px 12px;
  border: 1px solid transparent;
  /* 레이아웃 일관성을 위해 투명 테두리 유지 */
  background: white;
  display: block;
  width: 100%;
  height: 100%;
  min-height: 44px;
  text-align: center;
  font-size: 16px;
  box-sizing: border-box;
  /* 테두리 유무에 따른 폭 변화 방지 */
}

.time-entry.routine-planned .planned-input {
  box-shadow: inset 4px 0 0 rgba(39, 174, 96, 0.75);
  background-image: linear-gradient(90deg, rgba(39, 174, 96, 0.12) 0, rgba(39, 174, 96, 0.0) 45%);
}

.time-entry.routine-planned .planned-merged-main-container,
.time-entry.routine-planned .split-cell-wrapper.split-type-planned {
  box-shadow: inset 4px 0 0 rgba(39, 174, 96, 0.75);
  background-image: linear-gradient(90deg, rgba(39, 174, 96, 0.12) 0, rgba(39, 174, 96, 0.0) 45%);
}

.planned-input {
  border-right: 0;
  /* 시간열과 맞닿는 우측 경계선 제거 (겹침 방지) */
}

.actual-input {
  border-left: 0;
  /* 시간열과 맞닿는 좌측 경계선 제거 (겹침 방지) */
}

.actual-input {
  border-right: none;
}

.input-field:focus {
  background-color: #fff;
  outline: 2px solid #3498db;
  outline-offset: -2px;
}

.input-field:hover {
  background-color: #e8f4fd;
}

.summary {
  background-color: #2c3e50;
  color: white;
}

.summary-row {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  font-weight: 600;
  font-size: 1.1em;
}

.summary-row>div {
  padding: 15px;
  text-align: center;
  border-right: 1px solid #34495e;
}

.summary-row>div:last-child {
  border-right: none;
}

.analysis-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  background-color: #34495e;
  border-top: 1px solid #2c3e50;
}

.analysis-label {
  padding: 12px;
  text-align: center;
  font-weight: 600;
  color: white;
  border-right: 1px solid #2c3e50;
  display: flex;
  align-items: center;
  justify-content: center;
}

.analysis-content {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 8px;
  gap: 20px;
}

.analysis-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.analysis-metric {
  font-size: 12px;
  color: #bdc3c7;
  font-weight: 500;
}

.analysis-value {
  font-size: 14px;
  font-weight: 600;
  color: white;
}

.analysis-value.good {
  color: #2ecc71;
}

.analysis-value.warning {
  color: #f39c12;
}

.analysis-value.poor {
  color: #e74c3c;
}

.actions {
  margin-top: 30px;
  display: flex;
  gap: 15px;
  justify-content: center;
}

.actions button {
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#saveBtn {
  background-color: #27ae60;
  color: white;
}

#saveBtn:hover {
  background-color: #229954;
}

#loadBtn {
  background-color: #3498db;
  color: white;
}

#loadBtn:hover {
  background-color: #2980b9;
}


#clearBtn {
  background-color: #e74c3c;
  color: white;
}

#clearBtn:hover {
  background-color: #c0392b;
}

@media (max-width: 768px) {
  .container {
    margin: 10px;
    padding: 15px;
  }

  header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }

  h1 {
    font-size: 1.8em;
  }

  .header-row,
  .time-entry,
  .summary-row {
    grid-template-columns: 1fr 60px 1fr;
  }

  .time-slot,
  .input-field,
  .summary-row>div {
    padding: 8px;
    font-size: 14px;
  }

  .actions {
    flex-direction: column;
    align-items: center;
  }

  .actions button {
    width: 200px;
  }
}

.input-field.field-selected {
  background-color: transparent !important;
  color: inherit !important;
}

.input-field.field-selected::placeholder {
  color: inherit !important;
  opacity: 0.7;
}

.header-row {
  user-select: none;
  pointer-events: none;
}

.header-row>div {
  pointer-events: none;
}

.merge-button {
  position: absolute;
  background-color: #e74c3c;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease;
}

.merge-button:hover {
  background-color: #c0392b;
}

.undo-button {
  position: absolute;
  background: #3498db;
  /* schedule-button와 동일 */
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 28px;
  /* schedule-button와 동일 */
  height: 28px;
  /* schedule-button와 동일 */
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(52, 152, 219, 0.3);
  /* schedule-button와 동일 */
  transition: all 0.3s ease;
  /* schedule-button와 동일 */
  display: flex;
  align-items: center;
  justify-content: center;
}

.undo-button:hover {
  background: #2980b9;
  /* schedule-button와 동일 */
  transform: translateY(-1px);
  /* schedule-button와 동일 */
  box-shadow: 0 4px 8px rgba(52, 152, 219, 0.4);
  /* schedule-button와 동일 */
}

.undo-button::before {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  top: 4px;
  /* 28px 버튼에서 중앙 정렬 */
  left: 4px;
  /* 28px 버튼에서 중앙 정렬 */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='white' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 15 3 9m0 0 6-6M3 9h12a6 6 0 0 1 0 12h-3'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.undo-button::after {
  content: none !important;
}

.merged-field {
  border-bottom: none !important;
}

.merged-secondary {
  opacity: 0;
  visibility: visible;
  pointer-events: none;

  border: none !important;
  background: transparent !important;

  /* 각 행의 기본 높이를 유지하여 전체 시트 높이를 보존 */
  height: 44px !important;
  min-height: 44px !important;
  margin: 0 !important;
  padding: 0 !important;

  caret-color: transparent;
  user-select: none;
  outline: none;
}

.merged-field {
  background-color: white !important;
  border: 1px solid #ddd !important;
  border-bottom: none !important;
  border-top: none !important;
  /* 상단 중복 라인 방지 */
  align-self: stretch !important;
  justify-self: stretch !important;
}

/* 병합된 입력도 호버 시 연한 파란색 강조가 나타나도록 복원 */
.merged-field:hover {
  background-color: #e8f4fd !important;
}

/* 좌측 병합 메인 컨테이너: 내부 입력을 절대위치로 확장 */
.planned-merged-main-container {
  position: relative;
  z-index: 7;
  /* 행 내부 오버레이 위 */
  overflow: visible;
}

.planned-merged-main-container .merged-field {
  box-sizing: border-box !important;
  /* 높이, 위치는 JS에서 runtime으로 설정 */
}

/* 좌측(계획) 병합 블록: 상/하 라인은 행 경계선(2px)을 그대로 사용 */
.planned-merged-main-container::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: var(--merged-planned-block-height, 44px);
  border: none;
  box-sizing: border-box;
  pointer-events: none;
  z-index: 2;
}

/* 병합된 계획 입력을 전체 병합 높이에 맞춰 절대배치 */
.planned-merged-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1;
  /* 덮개/막대 용 스택 컨텍스트를 만들어 자식 z-index를 제어 */
  /* 하단 2px(행 경계선)을 가리지 않도록 높이를 2px 줄임 */
  height: calc(var(--merged-planned-block-height, 44px) - 2px);
  display: flex;
  align-items: center;
  padding: 0;
  box-sizing: border-box;
}

.planned-merged-overlay::before {
  content: "";
  position: absolute;
  inset: 2px 0 2px 0;
  /* 상·하 테두리를 남기고 내부 행 경계선만 덮음 */
  background: #fff;
  border-radius: inherit;
  z-index: 0;
  /* 덮개는 가장 뒤, 막대는 위로 올림 */
  pointer-events: none;
}

.planned-merged-overlay .merged-field {
  height: 100%;
  width: 100%;
  position: relative;
  /* 배경(::before)보다 위로 올림 */
  z-index: 1;
}

/* 좌측(계획) 병합 필드: 시간열과 맞닿는 우측 경계선 제거 */
.planned-input.merged-field,
.planned-input.merged-main {
  border-right: 0 !important;
  border-left-color: transparent !important;
  /* 외곽(타임시트) 좌측 2px와 겹치지 않도록 숨김 */
}

/* 선택 효과는 투명 오버레이로만 사용: 필드 자체 배경/색상 변경 제거 */
.merged-field.field-selected {
  background-color: transparent !important;
  color: inherit !important;
  border-color: inherit !important;
}

.merged-secondary.field-selected {
  background-color: transparent !important;
  color: inherit !important;
  border-color: inherit !important;
  box-shadow: none !important;
}

.selected-merged-planned {
  position: relative;
}

.selected-merged-planned::after {
  content: none !important;
}

.selected-merged-actual {
  position: relative;
}

.selected-merged-actual::before {
  content: none !important;
}

.merged-field.field-selected,
.merged-secondary.field-selected {
  position: static !important;
}

.merged-field.field-selected::after,
.merged-secondary.field-selected::after {
  content: none !important;
}

.has-planned-merge {
  position: relative;
}

.has-planned-merge::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: calc(50% + 40px);
  height: 2px;
  background-color: white;
  z-index: 1;
}

.has-actual-merge {
  position: relative;
}

.has-actual-merge::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: calc(50% + 40px);
  right: 0;
  height: 2px;
  background-color: white;
  z-index: 1;
}

.selection-overlay {
    position: absolute;
    background-color: rgba(52, 152, 219, 0.25);
  /* 투명 파란 오버레이만 */
  /* 테두리는 인셋 박스섀도우로 통일된 진하기 유지 (행 하단선과 겹침 방지) */
  box-shadow: inset 0 0 0 2px rgba(52, 152, 219, 0.55);
  border-radius: 4px;
  pointer-events: auto;
  cursor: pointer;
  z-index: 900;
  /* 콘텐츠/오버레이 위, 버튼(1000) 아래 */
}

.selection-overlay[data-type="planned"][data-fill="outline"] {
    background-color: transparent;
}

.hover-selection-overlay {
  pointer-events: none;
  z-index: 880;
}

.selected-merged-planned::after,
.selected-merged-actual::before,
.has-planned-merge::after,
.has-actual-merge::before,
.merged-field.field-selected::after,
.merged-secondary.field-selected::after {
  pointer-events: none;
}