/* 구글 폼 스타일 에디터 CSS */
/* 기본 변수 */
:root {
  --primary-color: #1a73e8;
  --primary-hover: #1557b0;
  --background-color: #f8f9fa;
  --surface-color: #ffffff;
  --border-color: #dadce0;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --shadow-light: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
  --shadow-medium: 0 1px 3px 0 rgba(60,64,67,.3), 0 4px 8px 3px rgba(60,64,67,.15);
  --border-radius: 8px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

/* 기본 리셋 */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Google Sans', Roboto, Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-primary);
  line-height: 1.5;
}

/* 에디터 컨테이너 */
.editor-container {
  min-height: 100vh;
  background-color: var(--background-color);
}

/* 상단 헤더 */
.editor-header {
  background: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-light);
}

.header-content {
  max-width: 768px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-title h1 {
  font-size: 1.375rem;
  font-weight: 400;
  margin: 0;
  color: var(--text-primary);
}

.header-title .icon {
  color: var(--primary-color);
  font-size: 1.25rem;
}

.header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* 버튼 스타일 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--surface-color);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 36px;
}

.btn:hover {
  background: #f8f9fa;
  box-shadow: var(--shadow-light);
}

.btn-primary {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

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

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
}

.btn-icon:hover {
  background: #f8f9fa;
}

/* 메인 콘텐츠 영역 */
.editor-main {
  max-width: 768px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* 템플릿 헤더 카드 */
.template-header-card {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
}

.template-header-content {
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.template-title {
  font-size: 2rem;
  font-weight: 400;
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--text-primary);
}

.template-description {
  color: var(--text-secondary);
  margin: 0;
  font-size: 1rem;
}

.template-settings {
  padding: var(--spacing-md);
  display: flex;
  justify-content: flex-end;
}

/* 필드 아이템 카드 */
.field-card {
  background: var(--surface-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  margin-bottom: var(--spacing-md);
  border: 2px solid transparent;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.field-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-medium);
}

.field-card.selected {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-medium);
}

.field-header {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fafbfc;
}

.field-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.field-type-icon {
  color: var(--primary-color);
  font-size: 1.125rem;
}

.field-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.field-content {
  padding: var(--spacing-lg);
}

.field-preview {
  pointer-events: none;
}

/* 드래그 핸들 */
.drag-handle {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--border-color);
  cursor: grab;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.field-card:hover .drag-handle {
  opacity: 1;
}

.drag-handle:hover {
  background: var(--primary-color);
}

.drag-handle:active {
  cursor: grabbing;
}

/* 빈 상태 */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  color: var(--border-color);
  margin-bottom: var(--spacing-md);
}

.empty-state-title {
  font-size: 1.25rem;
  font-weight: 400;
  margin: 0 0 var(--spacing-sm) 0;
}

.empty-state-description {
  margin: 0 0 var(--spacing-lg) 0;
}

/* 플로팅 액션 버튼 */
.fab {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  border: none;
  box-shadow: var(--shadow-medium);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.2s ease;
  z-index: 50;
}

.fab:hover {
  background: var(--primary-hover);
  transform: scale(1.05);
}

/* 구성요소 선택 모달 */
.component-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.component-modal.active {
  opacity: 1;
  visibility: visible;
}

.component-modal-content {
  background: var(--surface-color);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  width: 100%;
  max-width: 600px;
  max-height: 70vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.component-modal.active .component-modal-content {
  transform: translateY(0);
}

.component-modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: var(--surface-color);
}

.component-modal-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0;
}

.component-grid {
  padding: var(--spacing-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
}

.component-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  background: var(--surface-color);
}

.component-item:hover {
  border-color: var(--primary-color);
  background: #f8f9ff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
}

.component-icon {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.component-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* 속성 편집 패널 */
.properties-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 400px;
  background: var(--surface-color);
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 200;
  overflow-y: auto;
}

.properties-panel.active {
  transform: translateX(0);
}

.properties-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background: var(--surface-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.properties-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0;
}

.properties-content {
  padding: var(--spacing-lg);
}

/* 폼 요소 */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  background: var(--surface-color);
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.form-check-input {
  margin: 0;
}

/* 태블릿 반응형 */
@media (min-width: 768px) {
  .editor-main {
    padding: var(--spacing-xl);
  }
  
  .fab {
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
  }
  
  .component-modal-content {
    border-radius: var(--border-radius);
    margin: var(--spacing-xl);
    max-height: 80vh;
    transform: translateY(50px) scale(0.9);
  }
  
  .component-modal.active .component-modal-content {
    transform: translateY(0) scale(1);
  }
  
  .component-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
}

/* 데스크톱 반응형 */
@media (min-width: 1024px) {
  .editor-container {
    display: flex;
    flex-direction: column;
  }
  
  .editor-layout {
    display: flex;
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
  }
  
  .editor-sidebar {
    width: 280px;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
  }
  
  .sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
  }
  
  .sidebar-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin: 0;
  }
  
  .component-list {
    padding: var(--spacing-md);
  }
  
  .component-category {
    margin-bottom: var(--spacing-lg);
  }
  
  .component-category-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin: 0 0 var(--spacing-sm) 0;
  }
  
  .component-list .component-item {
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
  }
  
  .component-list .component-icon {
    font-size: 1.125rem;
    margin-bottom: 0;
    margin-right: var(--spacing-sm);
  }
  
  .editor-main {
    flex: 1;
    max-width: none;
    padding: 0;
  }
  
  .properties-panel {
    position: relative;
    width: 320px;
    transform: none;
    box-shadow: var(--shadow-light);
    border-radius: var(--border-radius);
    height: fit-content;
    position: sticky;
    top: var(--spacing-lg);
  }
  
  .fab {
    display: none;
  }
  
  .component-modal {
    display: none;
  }
}

/* 애니메이션 */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.field-card {
  animation: slideUp 0.3s ease;
}

/* 정렬 가능한 항목 스타일 */
.sortable-ghost {
  opacity: 0.5;
}

.sortable-chosen {
  transform: scale(1.02);
  box-shadow: var(--shadow-medium);
}

/* 로딩 상태 */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}