:root {
  --primary: #4F46E5;
  --primary-hover: #4338CA;
  --bg-main: #F8FAFC;
  --sidebar-bg: #FFFFFF;
  --border-color: #E2E8F0;
  --text-main: #1E293B;
  --text-muted: #64748B;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Pretendard', sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
}

/* 상단 헤더 */
.app-header {
  height: 52px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-logo-icon {
  display: block;
  flex-shrink: 0;
}

.logo-badge {
  background: var(--primary);
  color: #FFF;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
}

.app-header h1 {
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background-color 0.2s ease;
}

.logo-title-group:hover {
  background-color: #F1F5F9;
}

.dropdown-chevron {
  color: #64748B;
  transition: transform 0.2s ease, color 0.2s ease;
}

.logo-title-group:hover .dropdown-chevron {
  color: #0F172A;
}

.header-actions {
  display: flex;
  gap: 8px;
}

/* 규격 선택 영역 강조 */
.header-preset-select {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 2px solid #E2E8F0;
}

.preset-label {
  font-size: 11px;
  font-weight: 700;
  color: #4F46E5; /* 메인 인디고 컬러 */
  background: #EEF2FF;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.header-select {
  height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  border: 1.5px solid #C7D2FE; /* 시인성 높은 블루 테두리 */
  background-color: #F8FAFF;
  color: #1E293B;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700; /* 굵은 글씨로 강조 */
  outline: none;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(79, 70, 229, 0.08);
  transition: all 0.15s ease;
}

.header-select:hover {
  background-color: #EEF2FF;
  border-color: #4F46E5;
}

.header-select:focus {
  border-color: #4F46E5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.btn-ghost {
  background: transparent;
  border: none;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
}

.btn-ghost:hover {
  background: #F1F5F9;
  color: var(--text-main);
}

.btn-primary-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
}

/* 메인 작업 영역 */
.workspace {
  display: flex;
  height: calc(100vh - 52px);
  width: 100vw;
  overflow: hidden;
}

/* 사이드바 */
.sidebar {
  width: 250px;
  min-width: 250px;
  max-width: 250px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.block-scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  padding-bottom: 32px; /* 바닥 여유 여백 확보로 잘림 방지 */
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 소프트 블루 아코디언 카드 */
details.accordion-item {
  border: 1px solid #E0E7FF;
  border-radius: 8px;
  background-color: #FFFFFF;
  transition: all 0.2s ease;
  /* overflow: hidden 제거 (버튼 잘림 방지) */
}

details.accordion-item[open] {
  border-color: #C7D2FE;
  background-color: #FAFBFF;
}

/* 노란색 파스텔 톤 아코디언 (작업 이어하기) */
details.accordion-item.accordion-yellow {
  border-color: #FEF3C7; /* 소프트 앰버 테두리 */
  background-color: #FFFDF5;
}

details.accordion-item.accordion-yellow[open] {
  border-color: #FDE68A;
  background-color: #FFFDF5;
}

details.accordion-item.accordion-yellow summary.accordion-title {
  color: #92400E; /* 따뜻한 딥 브라운/앰버 텍스트 */
  background-color: #FEF3C7; /* 화사한 파스텔 옐로우 */
}

details.accordion-item.accordion-yellow summary.accordion-title:hover {
  background-color: #FDE68A;
}

details.accordion-item.accordion-yellow summary.accordion-title::after {
  color: #D97706; /* 앰버 포인트 화살표 */
}

/* 작업 이어하기 내부 전용 버튼 스타일 */
.accordion-yellow .tool-btn {
  background: #FFFFFF;
  border-color: #FDE68A;
  color: #78350F;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.accordion-yellow .tool-btn:hover {
  background: #FEF3C7;
  border-color: #FCD34D;
  color: #B45309;
}

/* 아코디언 제목 바 (텍스트 전용) */
summary.accordion-title {
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #3730A3;
  background-color: #EEF2FF;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
  border-radius: 7px; /* 닫혔을 때 둥근 테두리 유지 */
  transition: background-color 0.15s ease;
}

details.accordion-item[open] summary.accordion-title {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

summary.accordion-title::-webkit-details-marker {
  display: none;
}

summary.accordion-title:hover {
  background-color: #E0E7FF;
}

/* 화살표 아이콘 */
summary.accordion-title::after {
  content: '▾';
  font-size: 11px;
  color: #6366F1;
  transition: transform 0.2s ease;
}

/* 닫힌 상태일 때 화살표 회전 */
details.accordion-item:not([open]) summary.accordion-title::after {
  transform: rotate(-90deg);
}

/* 아코디언 내부 그리드 여백 및 버튼 스타일 */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 10px;
  background: transparent;
}

.tool-btn {
  background: #FFFFFF;
  border: 1px solid #E0E7FF;
  border-radius: 6px;
  padding: 8px 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.tool-btn:hover {
  background: #EEF2FF;
  border-color: #C7D2FE;
  color: #4338CA;
  transform: translateY(-1px);
}

/* 로고 업로드 버튼 (그리드 2열 꽉 채움) */
.btn-file-upload-grid {
  grid-column: span 2;
  margin-top: 4px;
  background: #F8FAFC;
  border: 1px dashed #CBD5E1;
  border-radius: 6px;
  padding: 8px 4px;
  font-size: 11px;
  text-align: center;
  cursor: pointer;
  color: var(--text-main);
  transition: all 0.15s ease;
}

.btn-file-upload-grid:hover {
  background: #EEF2FF;
  border-color: #C7D2FE;
  color: #4338CA;
}

/* 사이드바 하단 카피라이트 고정 영역 */
.sidebar-footer {
  padding: 10px 12px;
  border-top: 1px solid var(--border-color);
  background: #FAFAFA;
  text-align: center;
  flex-shrink: 0;
}

.copyright-text {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: -0.2px;
  user-select: none;
}

/* 캔버스 작업 영역 래퍼 */
.canvas-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #E2E8F0;
  overflow: hidden;
  position: relative;
}

/* 상단 서브 툴바 */
.sub-toolbar {
  height: 52px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
}

/* 단축키 미니 설명글 */
.shortcut-guide-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.guide-line {
  font-size: 11px;
  font-weight: 500;
  color: #475569;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 4px;
  user-select: none;
}

.guide-line kbd {
  background: #F1F5F9;
  border: 1px solid #CBD5E1;
  border-radius: 3px;
  padding: 0 3px;
  font-family: inherit;
  font-size: 9.5px;
  font-weight: 700;
  color: #1E293B;
  line-height: 1.2;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border-color);
  margin: 0 4px;
}

/* 서브 툴바 버튼 그룹 */
.tool-group {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.ms-auto {
  margin-left: auto;
}

/* 서브 툴바 버튼 (도구 및 아이콘) */
.tool-icon-btn {
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  padding: 5px 6px;
  border-radius: 4px;
  font-size: 11.5px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.tool-icon-btn:hover {
  background: #EDF2F7;
}

.tool-icon-btn.active-lock {
  background: #FEE2E2;
  border-color: #EF4444;
  color: #DC2626;
}

.tool-icon-btn.active-grid {
  background: #E0E7FF;
  border-color: #818CF8;
  color: #4338CA;
}

.btn-danger {
  color: #DC2626;
}

/* 서브 툴바 액션 버튼 (출력 / 다운로드) */
.btn-action {
  background: #F1F5F9;
  border: 1px solid #CBD5E1;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 11.5px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-highlight {
  background: var(--primary);
  color: #FFF;
  border: none;
  font-weight: 600;
}

.btn-highlight:hover {
  background: var(--primary-hover);
}

/* 캔버스 비율 전환 셀렉트 박스 */
select.btn-action {
  outline: none;
  font-family: inherit;
  font-size: 11.5px;
  color: var(--text-main);
  background-color: #F1F5F9;
  border: 1px solid #CBD5E1;
  padding: 4px 6px;
  border-radius: 4px;
  white-space: nowrap;
}

select.btn-action:hover {
  background-color: #EEF2F6;
  border-color: #94A3B8;
}

/* 캔버스 뷰포트 컨테이너 */
.canvas-container-outer {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: hidden;
  position: relative;
}

#floorCanvas {
  background: #FFFFFF;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  border-radius: 2px;
}

/* 마우스 우클릭 컨텍스트 메뉴 */
.context-menu {
  position: fixed;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  padding: 6px 0;
  min-width: 180px;
  z-index: 999999;
  display: none;
}

.context-item {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

.context-item:hover {
  background: #F1F5F9;
}

.context-header {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 4px 16px 2px 16px;
}

.context-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 2px 10px;
}

.context-sub-item {
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  background: #F8FAFC;
  text-align: center;
}

.context-sub-item:hover {
  background: #EEF2F6;
  color: var(--primary);
  font-weight: 600;
}

.context-divider {
  height: 1px;
  background: var(--border-color);
  margin: 5px 0;
}

/* 정렬 드롭다운 메뉴 */
.dropdown-wrapper {
  position: relative;
  display: inline-block;
}

.dropdown-btn {
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.dropdown-popover {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  padding: 10px;
  min-width: 220px;
  z-index: 10000;
  display: none;
}

.dropdown-popover.show {
  display: block;
}

.dropdown-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 8px;
  padding-left: 2px;
}

.dropdown-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.dropdown-item {
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
}

.dropdown-item:hover {
  background: #EEF2F6;
  border-color: #CBD5E1;
  color: var(--primary);
  font-weight: 600;
}

/* 후원 모달 듀얼 QR 레이아웃 */
.donation-body {
  text-align: center;
}

.donation-body p {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.qr-container {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 8px;
}

.qr-card {
  flex: 1;
  max-width: 170px;
  background: #F8FAFC;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.qr-label {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.toss-label {
  color: #0064FF;
  background: #E8F3FF;
}

.kakao-label {
  color: #3C1E1E;
  background: #FEE500;
}

.qr-img-wrapper {
  width: 140px;
  height: 140px;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-placeholder {
  display: none;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: #F1F5F9;
}

/* 빨간색 초기화 버튼 (글자색 및 테두리 빨간색 적용) */
.tool-icon-btn.btn-clear-danger {
  color: #DC2626;
  border-color: #F87171;
  background-color: #FEF2F2;
  font-weight: 600;
}

.tool-icon-btn.btn-clear-danger:hover {
  background-color: #FEE2E2;
  border-color: #EF4444;
}

/* 다운로드 전용 팝오버 메뉴 */
.download-popover {
  right: 0;
  left: auto;
  min-width: 190px;
}

.download-popover .dropdown-item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  font-size: 12px;
  margin-bottom: 2px;
}

/* 가이드 모달 전용 확장 너비 및 타이틀 스타일 */
.guide-modal-content {
  width: 520px;
  max-width: 90vw;
}

.guide-sub-title {
  font-size: 12.5px;
  font-weight: 700;
  color: #1E293B;
  margin-bottom: 6px;
}

.guide-table td {
  line-height: 1.5;
  color: #334155;
}

.guide-table td strong {
  color: #4F46E5;
}