/* 🔍 ANCHOR_SEARCH: Kommentio Admin Dashboard Styles */
/* Kommentio Admin Dashboard - Vanilla CSS */
/* HeroUI-inspired design system - v0.3.4 성능 최적화 */

/* v0.3.4 엔터프라이즈급 최적화: CSS 성능 최적화 */
/* 빠른 렌더링을 위한 will-change 최적화 */
.performance-critical {
  will-change: transform, opacity;
  contain: layout style paint;
  transform: translateZ(0); /* GPU 가속 활성화 */
}

/* 애니메이션 성능 최적화 */
* {
  /* 빠른 렌더링을 위한 기본 설정 */
  backface-visibility: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 빠른 비동기 이미지 로딩 */
img {
  loading: lazy;
  decoding: async;
}

/* 🔍 ANCHOR_SEARCH: CSS Animations - 성능 최적화 */
/* Animations - GPU 가속 및 60fps 보장 */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.02);
  }
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  will-change: transform, opacity;
  transform: translateZ(0);
}

/* 성능 최적화된 애니메이션 */
@keyframes slideInRight {
  0% {
    transform: translate3d(100%, 0, 0);
    opacity: 0;
  }
  100% {
    transform: translate3d(0, 0, 0);
    opacity: 1;
  }
}

@keyframes fadeInUp {
  0% {
    transform: translate3d(0, 20px, 0);
    opacity: 0;
  }
  100% {
    transform: translate3d(0, 0, 0);
    opacity: 1;
  }
}

.animate-slideInRight {
  animation: slideInRight 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform, opacity;
}

.animate-fadeInUp {
  animation: fadeInUp 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform, opacity;
}

/* 애니메이션 완료 후 will-change 제거 */
.animation-ended {
  will-change: auto;
}

/* 🔍 ANCHOR_SEARCH: Modal System */
/* 실제 사용 가능한 모달 - 레이아웃 우선 */
.modal-overlay {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  z-index: 9999 !important;
  background: rgba(0, 0, 0, 0.5) !important;
  backdrop-filter: blur(4px) !important;
  -webkit-backdrop-filter: blur(4px) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 20px !important;
  box-sizing: border-box !important;
}

.modal {
  position: relative !important;
  background: var(--theme-bg-modal) !important;
  border-radius: 12px !important;
  box-shadow: var(--theme-shadow-xl) !important;
  width: 100% !important;
  max-width: 500px !important;
  min-height: 200px !important;
  max-height: 80vh !important;
  overflow: hidden !important;
  border: 1px solid var(--theme-border-primary) !important;
  display: flex !important;
  flex-direction: column !important;
  box-sizing: border-box !important;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* 사용 가능한 모달 헤더 */
.modal .modal-header {
  padding: 24px 24px 0 24px !important;
  border: none !important;
  background: transparent !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-shrink: 0 !important;
  box-sizing: border-box !important;
}

.modal .modal-header h3 {
  color: var(--theme-text-primary) !important;
  font-size: 18px !important;
  font-weight: 600 !important;
  margin: 0 !important;
  line-height: 1.4 !important;
  flex: 1 !important;
  padding-right: 16px !important;
  word-break: keep-all !important;
  overflow-wrap: break-word !important;
  transition: color 0.3s ease !important;
}

.modal .modal-header button {
  background: var(--theme-bg-secondary) !important;
  border: none !important;
  border-radius: 6px !important;
  width: 32px !important;
  height: 32px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: var(--theme-text-secondary) !important;
  transition: all 0.2s ease, background-color 0.3s ease, color 0.3s ease !important;
  cursor: pointer !important;
  padding: 0 !important;
  flex-shrink: 0 !important;
}

.modal .modal-header button:hover {
  background: var(--theme-bg-hover) !important;
  color: var(--theme-text-primary) !important;
}

/* 사용 가능한 모달 바디 */
.modal .modal-body {
  padding: 20px 24px !important;
  background: transparent !important;
  flex: 1 !important;
  overflow-y: auto !important;
  box-sizing: border-box !important;
}

/* 사용 가능한 모달 푸터 */
.modal .modal-footer {
  background: var(--theme-bg-secondary) !important;
  border-top: 1px solid var(--theme-border-primary) !important;
  padding: 16px 24px !important;
  margin: 0 -24px !important;
  display: flex !important;
  justify-content: flex-end !important;
  gap: 12px !important;
  flex-shrink: 0 !important;
  box-sizing: border-box !important;
  transition: background-color 0.3s ease, border-color 0.3s ease !important;
}

/* 실제 사용 가능한 폼 스타일링 */
.modal .input-label {
  display: block !important;
  font-size: 14px !important;
  font-weight: 500 !important;
  color: #374151 !important;
  margin-bottom: 8px !important;
  line-height: 1.4 !important;
  box-sizing: border-box !important;
}

.modal .input {
  width: 100% !important;
  height: 40px !important;
  padding: 10px 12px !important;
  border: 1px solid #d1d5db !important;
  border-radius: 6px !important;
  font-size: 14px !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease !important;
  background: #ffffff !important;
  box-sizing: border-box !important;
}

.modal .input:focus {
  outline: none !important;
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1) !important;
}

.modal .input::placeholder {
  color: #9ca3af !important;
  font-size: 14px !important;
}

/* 실제 사용 가능한 체크박스 디자인 */
.modal .checkbox-group {
  background: #f8fafc !important;
  border: 1px solid #e5e7eb !important;
  border-radius: 8px !important;
  padding: 16px !important;
  margin: 12px 0 !important;
  box-sizing: border-box !important;
}

.modal .checkbox-group-title {
  font-size: 14px !important;
  font-weight: 500 !important;
  color: #6b7280 !important;
  margin-bottom: 12px !important;
  line-height: 1.4 !important;
  word-break: keep-all !important;
  overflow-wrap: break-word !important;
}

.modal input[type="checkbox"] {
  width: 16px !important;
  height: 16px !important;
  border: 1px solid #d1d5db !important;
  border-radius: 3px !important;
  background: white !important;
  cursor: pointer !important;
  position: relative !important;
  margin-right: 10px !important;
  flex-shrink: 0 !important;
  transition: all 0.2s ease !important;
  appearance: none !important;
  -webkit-appearance: none !important;
}

.modal input[type="checkbox"]:hover {
  border-color: #9ca3af !important;
}

.modal input[type="checkbox"]:checked {
  background: #3b82f6 !important;
  border-color: #3b82f6 !important;
}

.modal input[type="checkbox"]:checked::after {
  content: '✓' !important;
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  color: white !important;
  font-size: 10px !important;
  font-weight: 700 !important;
}

.modal label {
  display: flex !important;
  align-items: flex-start !important;
  cursor: pointer !important;
  padding: 8px 0 !important;
  font-size: 14px !important;
  color: #374151 !important;
  transition: color 0.2s ease !important;
  line-height: 1.4 !important;
  word-break: keep-all !important;
  overflow-wrap: break-word !important;
  box-sizing: border-box !important;
}

.modal label:hover {
  color: #111827 !important;
}

/* 실제 사용 가능한 버튼 디자인 */
.modal .btn {
  height: 40px !important;
  padding: 8px 20px !important;
  border-radius: 6px !important;
  font-size: 14px !important;
  font-weight: 500 !important;
  transition: all 0.2s ease !important;
  border: 1px solid transparent !important;
  cursor: pointer !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  white-space: nowrap !important;
  min-width: 80px !important;
  box-sizing: border-box !important;
  flex-shrink: 0 !important;
}

.modal .btn-primary {
  background: #3b82f6 !important;
  color: white !important;
  border-color: #3b82f6 !important;
}

.modal .btn-primary:hover {
  background: #2563eb !important;
  border-color: #2563eb !important;
}

.modal .btn-secondary {
  background: white !important;
  color: #6b7280 !important;
  border-color: #d1d5db !important;
}

.modal .btn-secondary:hover {
  background: #f9fafb !important;
  border-color: #9ca3af !important;
  color: #374151 !important;
}

/* 간단한 모달 애니메이션 */
@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal {
  animation: modalFadeIn 0.2s ease-out !important;
}

/* 실제 사용 가능한 폼 간격 */
.modal .modal-body > div {
  margin-bottom: 20px !important;
}

.modal .modal-body > div:last-child {
  margin-bottom: 0 !important;
}

.modal .form-section {
  margin-bottom: 20px !important;
}

.modal .form-section:last-child {
  margin-bottom: 0 !important;
}

/* 텍스트 자르기 방지 및 완전 표시 보장 */
.modal * {
  text-overflow: unset !important;
  overflow: visible !important;
  white-space: normal !important;
  word-wrap: break-word !important;
  hyphens: auto !important;
  box-sizing: border-box !important;
}

/* 모든 텍스트가 완전히 표시되도록 보장 */
.modal h3,
.modal label,
.modal span,
.modal p {
  overflow: visible !important;
  text-overflow: unset !important;
  white-space: normal !important;
  word-break: keep-all !important;
  overflow-wrap: break-word !important;
  line-height: 1.5 !important;
  word-spacing: normal !important;
}

/* 🔍 ANCHOR_SEARCH: CSS Variables Root - 성능 최적화 */
:root {
  /* v0.3.6 다크모드 + 모바일 최적화: 완전한 테마 시스템 구축 */
  
  /* 🌟 Core Theme Variables - Dynamic Theme System */
  --theme-bg-primary: #ffffff;
  --theme-bg-secondary: #f9fafb;
  --theme-bg-tertiary: #f3f4f6;
  --theme-bg-accent: #f0f9ff;
  --theme-bg-modal: #ffffff;
  --theme-bg-sidebar: #ffffff;
  --theme-bg-card: #ffffff;
  --theme-bg-hover: #f9fafb;
  --theme-bg-active: #f3f4f6;
  
  --theme-text-primary: #111827;
  --theme-text-secondary: #6b7280;
  --theme-text-tertiary: #9ca3af;
  --theme-text-inverse: #ffffff;
  --theme-text-accent: #0070f3;
  --theme-text-muted: #374151;
  
  --theme-border-primary: #e5e7eb;
  --theme-border-secondary: #d1d5db;
  --theme-border-accent: #3b82f6;
  --theme-border-focus: #0070f3;
  --theme-border-hover: #9ca3af;
  
  --theme-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --theme-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --theme-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --theme-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Core Performance Colors (가장 자주 사용) */
  --primary: #0070f3;
  --primary-hover: #0051cc;
  --primary-light: #f0f9ff;
  --bg-primary: var(--theme-bg-primary);
  --bg-secondary: var(--theme-bg-secondary);
  --text-primary: var(--theme-text-primary);
  --text-secondary: var(--theme-text-secondary);
  --border-primary: var(--theme-border-primary);
  
  /* Extended Colors */
  --primary-50: #f0f9ff;
  --primary-100: #e0f2fe;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  
  --success: #10b981;
  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-600: #16a34a;
  
  --danger: #ef4444;
  --danger-50: #fef2f2;
  --danger-100: #fee2e2;
  --danger-600: #dc2626;
  
  --warning: #f59e0b;
  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-600: #d97706;
  
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Optimized Spacing (통합된 값들) */
  --space-xs: 0.25rem;  /* 4px */
  --space-sm: 0.5rem;   /* 8px */
  --space-md: 0.75rem;  /* 12px */
  --space-lg: 1rem;     /* 16px */
  --space-xl: 1.25rem;  /* 20px */
  --space-2xl: 1.5rem;  /* 24px */
  --space-3xl: 2rem;    /* 32px */
  --space-4xl: 3rem;    /* 48px */
  
  /* Legacy Spacing (호환성) */
  --spacing-1: var(--space-xs);
  --spacing-2: var(--space-sm);
  --spacing-3: var(--space-md);
  --spacing-4: var(--space-lg);
  --spacing-5: var(--space-xl);
  --spacing-6: var(--space-2xl);
  --spacing-8: var(--space-3xl);
  --spacing-12: var(--space-4xl);
  
  /* Optimized Radius */
  --radius: 0.5rem;      /* 기본 radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
  
  /* Optimized Shadows (CSS 전용 가능한 형태) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  
  /* Performance Optimized Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Typography Scale */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-modal: 9999;
  --z-toast: 10000;
  
  /* Responsive Breakpoints (미디어 쿼리에서 사용) */
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--theme-bg-secondary);
  color: var(--theme-text-primary);
  line-height: 1.5;
  /* v0.3.6 다크모드 + 성능 최적화 */
  font-display: swap; /* 빠른 폰트 렌더링 */
  text-rendering: optimizeSpeed; /* 성능 우선 텍스트 렌더링 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 모바일 최적화 */
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  /* 다크모드 전환 애니메이션 */
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* 🔍 ANCHOR_SEARCH: Layout System */
/* Layout */
#app {
  display: flex;
  height: 100vh;
}

/* 🔍 ANCHOR_SEARCH: Sidebar Styles */
/* Sidebar */
.sidebar {
  width: 16rem;
  background: var(--theme-bg-sidebar);
  border-right: 1px solid var(--theme-border-primary);
  box-shadow: var(--theme-shadow-sm);
  display: flex;
  /* 다크모드 전환 애니메이션 */
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px var(--spacing-6) !important;
  border-bottom: 1px solid var(--gray-200) !important;
  height: 80px !important;
  display: flex !important;
  align-items: center !important;
  box-sizing: border-box !important;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.logo i {
  color: var(--primary-600);
  font-size: 1.5rem;
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-6) var(--spacing-3);
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 14px var(--space-md); /* 높이를 44px+ 보장하도록 패딩 증가 */
  min-height: 44px; /* 터치 타겟 최소 크기 보장 */
  border-radius: var(--radius-lg);
  color: var(--theme-text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all var(--transition-base), color 0.3s ease, background-color 0.3s ease;
  cursor: pointer;
  /* v0.3.6 모바일 + 다크모드 최적화 */
  -webkit-tap-highlight-color: rgba(59, 130, 246, 0.3);
  user-select: none;
  position: relative;
  box-sizing: border-box;
  /* 성능 최적화 */
  contain: layout style;
  will-change: background-color, transform;
  transform: translateZ(0);
}

.nav-link:hover,
.nav-link:focus {
  background: var(--theme-bg-hover);
  color: var(--theme-text-primary);
  transform: translate3d(2px, 0, 0); /* GPU 가속 사용 */
  /* 모바일 성능 최적화 */
  -webkit-transform: translate3d(2px, 0, 0);
}

.nav-link.active {
  background: var(--theme-bg-accent);
  color: var(--theme-text-accent);
  font-weight: 600;
  box-shadow: var(--theme-shadow-md);
  /* 성능 최적화 */
  will-change: auto; /* active 상태에서는 will-change 비활성화 */
}

/* 터치 활성화 상태 - 모바일 최적화 */
.nav-link:active {
  transform: translate3d(0, 0, 0);
  background: var(--theme-bg-active);
  transition: none; /* 터치 시 즉시 반응 */
}

.nav-link i {
  font-size: 1.125rem;
  width: 1.25rem;
  text-align: center;
}

.sidebar-footer {
  padding: var(--spacing-4);
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.version-info {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-500);
  line-height: 1.4;
}

/* 🔍 ANCHOR_SEARCH: Main Content Area */
/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.header {
  background: var(--theme-bg-primary) !important;
  border-bottom: 1px solid var(--theme-border-primary) !important;
  box-shadow: var(--theme-shadow-sm) !important;
  padding: 20px var(--spacing-6) !important;
  height: 80px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  box-sizing: border-box !important;
  /* 다크모드 전환 애니메이션 */
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--theme-text-primary);
  transition: color 0.3s ease;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 🌙 다크모드 토글 버튼 v0.3.6 */
.theme-toggle-btn {
  position: relative;
  width: 44px;
  height: 44px;
  background: var(--theme-bg-secondary);
  border: 2px solid var(--theme-border-primary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  /* 터치 최적화 */
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.theme-toggle-btn:hover {
  background: var(--theme-bg-hover);
  border-color: var(--theme-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--theme-shadow-md);
}

.theme-toggle-btn:active {
  transform: translateY(0);
  box-shadow: var(--theme-shadow-sm);
}

.theme-toggle-btn .theme-icon-dark,
.theme-toggle-btn .theme-icon-light {
  position: absolute;
  font-size: 1.1rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 🌞 라이트 모드 아이콘 색상 */
:root:not([data-theme="dark"]) .theme-toggle-btn .theme-icon-dark {
  color: #6b7280 !important; /* 회색 달 아이콘 */
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

:root:not([data-theme="dark"]) .theme-toggle-btn .theme-icon-light {
  color: #6b7280 !important;
  opacity: 0;
  transform: rotate(180deg) scale(0.5);
}

/* 🌙 다크 모드 아이콘 색상 */
[data-theme="dark"] .theme-toggle-btn .theme-icon-dark {
  color: #cbd5e1 !important;
  opacity: 0;
  transform: rotate(-180deg) scale(0.5);
}

[data-theme="dark"] .theme-toggle-btn .theme-icon-light {
  color: #fbbf24 !important; /* 황금색 태양 아이콘 */
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* 토글 애니메이션 효과 */
.theme-toggle-btn.toggling {
  transform: scale(0.9);
}

.theme-toggle-btn.toggling .theme-icon-dark,
.theme-toggle-btn.toggling .theme-icon-light {
  animation: iconSpin 0.6s ease-in-out;
}

@keyframes iconSpin {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(0.8); }
  100% { transform: rotate(360deg) scale(1); }
}

.user-greeting {
  font-size: 0.875rem;
  color: var(--theme-text-secondary);
  transition: color 0.3s ease;
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-6);
  background: var(--theme-bg-secondary);
  color: var(--theme-text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Page Views */
.page-view {
  display: none;
}

.page-view.active {
  display: block;
}

/* Cards */
.card {
  background: var(--theme-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--theme-shadow-sm);
  border: 1px solid var(--theme-border-primary);
  overflow: hidden;
  /* 다크모드 전환 애니메이션 */
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--theme-border-primary);
  background: var(--theme-bg-secondary);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--theme-text-primary);
  transition: color 0.3s ease;
}

.card-body {
  padding: var(--spacing-6);
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.stat-card {
  background: var(--theme-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--theme-shadow-sm);
  border: 1px solid var(--theme-border-primary);
  padding: var(--spacing-6);
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.stat-card-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-card-info h3 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: var(--spacing-2);
}

.stat-card-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.stat-card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-card-icon.blue {
  background: var(--primary-50);
  color: var(--primary-600);
}

.stat-card-icon.green {
  background: var(--success-50);
  color: var(--success-600);
}

.stat-card-icon.purple {
  background: #f3e8ff;
  color: #7c3aed;
}

.stat-card-icon.red {
  background: var(--danger-50);
  color: var(--danger-600);
}

/* 🔍 ANCHOR_SEARCH: Button Components v0.3.6 다크모드 */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: 12px var(--spacing-4); /* 44px+ 높이 보장 */
  min-height: 44px; /* 터치 타겟 최소 크기 */
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease, color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
  /* 터치 피드백 개선 */
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  box-sizing: border-box;
  position: relative;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.2);
}

.btn-secondary {
  background: var(--theme-bg-secondary);
  color: var(--theme-text-primary);
  border-color: var(--theme-border-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--theme-bg-hover);
  border-color: var(--theme-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--theme-shadow-md);
}

.btn-secondary:active {
  transform: translateY(0);
  background: var(--theme-bg-active);
}

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

.btn-success:hover,
.btn-success:focus {
  background: var(--success-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.25);
}

.btn-success:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(34, 197, 94, 0.2);
}

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

.btn-danger:hover,
.btn-danger:focus {
  background: var(--danger-600);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}

.btn-danger:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.2);
}

.btn-sm {
  padding: 8px var(--spacing-3); /* 최소 36px 높이 보장 */
  min-height: 36px; /* 작은 버튼도 터치 가능한 크기 */
  font-size: 0.75rem;
}

/* 🔍 ANCHOR_SEARCH: Responsive Design Media Queries */
/* 태블릿/모바일에서 작은 버튼도 44px로 확장 */
@media (max-width: 1024px) {
  .btn-sm {
    min-height: 44px;
    padding: 10px var(--spacing-3);
    font-size: 0.875rem; /* 가독성을 위해 폰트 크기도 증가 */
  }
  
  /* 모든 클릭 가능한 요소에 터치 최적화 */
  a, button, input, select, textarea, [role="button"], [tabindex="0"] {
    min-height: 44px !important;
    min-width: 44px !important;
  }
  
  /* 링크와 버튼 터치 영역 확장 */
  a:not(.btn), button:not(.btn) {
    padding: 12px 16px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }
  
  /* 체크박스와 라디오 버튼 터치 영역 확장 */
  input[type="checkbox"], input[type="radio"] {
    width: 24px !important;
    height: 24px !important;
    min-width: 44px !important;
    min-height: 44px !important;
    position: relative !important;
  }
  
  input[type="checkbox"]::before, input[type="radio"]::before {
    content: '' !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    width: 44px !important;
    height: 44px !important;
    background: transparent !important;
    border-radius: 50% !important;
    z-index: -1 !important;
  }
  
  /* 드롭다운 및 선택 요소 터치 최적화 */
  select {
    min-height: 52px !important;
    padding: 14px 16px !important;
    font-size: 16px !important; /* iOS 확대 방지 */
    border-radius: 12px !important;
  }
  
  /* 탭 버튼 터치 최적화 */
  [role="tab"], .tab-button {
    min-height: 48px !important;
    padding: 12px 20px !important;
    border-radius: 12px !important;
    margin: 4px !important;
  }
  
  /* 모달 내 요소들 터치 최적화 */
  .modal button, .modal .btn {
    min-height: 48px !important;
    padding: 12px 24px !important;
    border-radius: 12px !important;
    font-size: 16px !important;
  }
  
  .modal input, .modal textarea, .modal select {
    min-height: 48px !important;
    padding: 14px 16px !important;
    font-size: 16px !important;
    border-radius: 12px !important;
  }
  
  /* 테이블 행 터치 최적화 */
  .table tr {
    min-height: 56px !important;
  }
  
  .table td, .table th {
    padding: 16px 12px !important;
    vertical-align: middle !important;
  }
  
  /* 알림 토스트 터치 최적화 */
  .notification {
    min-height: 60px !important;
    padding: 16px 20px !important;
    font-size: 16px !important;
    border-radius: 16px !important;
  }
  
  /* 아코디언 및 접기/펼치기 요소 터치 최적화 */
  .accordion-header, .collapsible-header {
    min-height: 56px !important;
    padding: 16px 20px !important;
    border-radius: 12px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
  }
  
  .accordion-header:active, .collapsible-header:active {
    transform: scale(0.98) !important;
  }
  
  /* 접근성 개선: 포커스 표시 */
  button:focus, input:focus, select:focus, textarea:focus, a:focus {
    outline: 3px solid rgba(59, 130, 246, 0.5) !important;
    outline-offset: 2px !important;
  }
  
  /* 고대비 모드 지원 */
  @media (prefers-contrast: high) {
    button, .btn {
      border: 2px solid !important;
    }
    
    .nav-link {
      border: 1px solid transparent !important;
    }
    
    .nav-link.active {
      border-color: var(--primary-700) !important;
    }
  }
  
  /* 애니메이션 비활성화 선호 사용자 지원 */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      transform: none !important;
    }
    
    .sidebar {
      transition: none !important;
    }
    
    .nav-link:hover {
      transform: none !important;
    }
    
    button:hover, .btn:hover {
      transform: none !important;
    }
  }
  
/* 🌙 완전한 다크모드 시스템 v0.3.6 */

/* 🔥 즉시 테스트 가능한 라이트/다크모드 스타일 */

/* 라이트 모드 (기본) */
:root:not([data-theme="dark"]) body {
  background-color: #f9fafb !important;
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .sidebar {
  background-color: #ffffff !important;
  border-color: #e5e7eb !important;
}

:root:not([data-theme="dark"]) .header {
  background-color: #ffffff !important;
  border-color: #e5e7eb !important;
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .page-title {
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .page-content {
  background-color: #ffffff !important;
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .card {
  background-color: #ffffff !important;
  border-color: #e5e7eb !important;
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .card-header {
  background-color: #f9fafb !important;
  border-color: #e5e7eb !important;
}

:root:not([data-theme="dark"]) .card-header h2 {
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .nav-link {
  color: #6b7280 !important;
}

:root:not([data-theme="dark"]) .nav-link:hover {
  background-color: #f9fafb !important;
  color: #111827 !important;
}

:root:not([data-theme="dark"]) .nav-link.active {
  background-color: #f0f9ff !important;
  color: #0369a1 !important;
}

/* 🌞 라이트 모드 토글 버튼 */
:root:not([data-theme="dark"]) .theme-toggle-btn {
  background-color: #f9fafb !important;
  border-color: #e5e7eb !important;
  color: #6b7280 !important;
}

:root:not([data-theme="dark"]) .theme-toggle-btn:hover {
  background-color: #f3f4f6 !important;
  border-color: #d1d5db !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
  transform: translateY(-1px) !important;
}

:root:not([data-theme="dark"]) .theme-toggle-btn:active {
  background-color: #e5e7eb !important;
  transform: translateY(0) !important;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05) !important;
}

/* 다크 모드 */
[data-theme="dark"] body {
  background-color: #0f172a !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .sidebar {
  background-color: #1e293b !important;
  border-color: #334155 !important;
}

[data-theme="dark"] .header {
  background-color: #0f172a !important;
  border-color: #334155 !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .page-title {
  color: #f8fafc !important;
}

[data-theme="dark"] .nav-link {
  color: #cbd5e1 !important;
}

[data-theme="dark"] .nav-link:hover {
  background-color: #334155 !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .nav-link.active {
  background-color: #1e3a8a !important;
  color: #60a5fa !important;
}

/* 🌙 다크 모드 토글 버튼 */
[data-theme="dark"] .theme-toggle-btn {
  background-color: #334155 !important;
  border-color: #475569 !important;
  color: #cbd5e1 !important;
}

[data-theme="dark"] .theme-toggle-btn:hover {
  background-color: #475569 !important;
  border-color: #64748b !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3) !important;
  transform: translateY(-1px) !important;
}

[data-theme="dark"] .theme-toggle-btn:active {
  background-color: #1e293b !important;
  transform: translateY(0) !important;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2) !important;
}

[data-theme="dark"] .page-content {
  background-color: #1e293b !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .card {
  background-color: #334155 !important;
  border-color: #475569 !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .card-header {
  background-color: #1e293b !important;
  border-color: #475569 !important;
}

[data-theme="dark"] .card-header h2 {
  color: #f8fafc !important;
}

/* 다크모드 테마 변수 정의 */
[data-theme="dark"] {
  /* 🌙 Dark Theme Core Variables */
  --theme-bg-primary: #0f172a;
  --theme-bg-secondary: #1e293b;
  --theme-bg-tertiary: #334155;
  --theme-bg-accent: #1e3a8a;
  --theme-bg-modal: #1e293b;
  --theme-bg-sidebar: #0f172a;
  --theme-bg-card: #1e293b;
  --theme-bg-hover: #334155;
  --theme-bg-active: #475569;
  
  --theme-text-primary: #f8fafc;
  --theme-text-secondary: #cbd5e1;
  --theme-text-tertiary: #94a3b8;
  --theme-text-inverse: #0f172a;
  --theme-text-accent: #60a5fa;
  --theme-text-muted: #e2e8f0;
  
  --theme-border-primary: #334155;
  --theme-border-secondary: #475569;
  --theme-border-accent: #3b82f6;
  --theme-border-focus: #60a5fa;
  --theme-border-hover: #64748b;
  
  --theme-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --theme-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --theme-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --theme-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  
  /* 다크모드 전용 색상 오버라이드 */
  --gray-50: #1e293b;
  --gray-100: #334155;
  --gray-200: #475569;
  --gray-300: #64748b;
  --gray-400: #94a3b8;
  --gray-500: #cbd5e1;
  --gray-600: #e2e8f0;
  --gray-700: #f1f5f9;
  --gray-800: #f8fafc;
  --gray-900: #ffffff;
  
  /* 상태 색상 다크모드 조정 */
  --success: #22c55e;
  --success-50: #14532d;
  --success-100: #166534;
  --success-600: #16a34a;
  
  --danger: #f87171;
  --danger-50: #7f1d1d;
  --danger-100: #991b1b;
  --danger-600: #dc2626;
  
  --warning: #fbbf24;
  --warning-50: #78350f;
  --warning-100: #92400e;
  --warning-600: #d97706;
  
  /* 프라이머리 색상 다크모드 조정 */
  --primary-50: #1e3a8a;
  --primary-100: #1e40af;
  --primary-600: #3b82f6;
  --primary-700: #60a5fa;
  --primary-light: #1e3a8a;
}

/* 시스템 다크모드 선호 사용자 자동 적용 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    /* 수동 테마 설정이 없을 때만 시스템 설정 따라감 */
    --theme-bg-primary: #0f172a;
    --theme-bg-secondary: #1e293b;
    --theme-bg-tertiary: #334155;
    --theme-bg-accent: #1e3a8a;
    --theme-bg-modal: #1e293b;
    --theme-bg-sidebar: #0f172a;
    --theme-bg-card: #1e293b;
    --theme-bg-hover: #334155;
    --theme-bg-active: #475569;
    
    --theme-text-primary: #f8fafc;
    --theme-text-secondary: #cbd5e1;
    --theme-text-tertiary: #94a3b8;
    --theme-text-inverse: #0f172a;
    --theme-text-accent: #60a5fa;
    --theme-text-muted: #e2e8f0;
    
    --theme-border-primary: #334155;
    --theme-border-secondary: #475569;
    --theme-border-accent: #3b82f6;
    --theme-border-focus: #60a5fa;
    --theme-border-hover: #64748b;
    
    --theme-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --theme-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --theme-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --theme-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    
    --gray-50: #1e293b;
    --gray-100: #334155;
    --gray-200: #475569;
    --gray-300: #64748b;
    --gray-900: #f8fafc;
  }
}
  
  /* 세밀한 포인터 (마우스) vs 거친 포인터 (터치) 구분 */
  @media (pointer: coarse) {
    /* 터치 기기에서만 적용되는 스타일 */
    .btn, button {
      min-height: 48px !important;
      padding: 14px 20px !important;
    }
    
    .nav-link {
      min-height: 48px !important;
      padding: 16px var(--spacing-3) !important;
    }
  }
  
  @media (pointer: fine) {
    /* 마우스 등 정밀한 포인터에서만 적용 */
    .btn:hover, button:hover {
      transform: translateY(-1px) !important;
    }
  }
  
  /* 성능 최적화: GPU 가속 활성화 */
  .sidebar, .main-content, .modal {
    will-change: transform !important;
    transform: translateZ(0) !important;
  }
  
  /* 터치 스크롤 최적화 */
  .page-content, .modal-body, .table-container {
    -webkit-overflow-scrolling: touch !important;
    overscroll-behavior: contain !important;
  }
  
  /* iOS Safari 상태바 및 노치 대응 */
  @supports (padding-top: env(safe-area-inset-top)) {
    .header {
      padding-top: calc(20px + env(safe-area-inset-top)) !important;
    }
    
    .sidebar {
      padding-top: env(safe-area-inset-top) !important;
    }
    
    .page-content {
      padding-bottom: calc(var(--spacing-6) + env(safe-area-inset-bottom)) !important;
    }
  }
}

/* Input v0.3.6 다크모드 */
.input {
  width: 100%;
  padding: 12px var(--spacing-3); /* 44px+ 높이 보장 */
  min-height: 44px; /* 터치 타겟 최소 크기 */
  border: 2px solid var(--theme-border-primary); /* 더 굵은 테두리로 터치 피드백 개선 */
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  transition: all 0.2s ease, color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
  box-sizing: border-box;
  background: var(--theme-bg-primary);
  color: var(--theme-text-primary);
  /* 터치 기기에서 확대 방지 */
  font-size: 16px; /* iOS에서 자동 확대 방지 */
}

.input:focus {
  outline: none;
  border-color: var(--theme-border-focus);
  box-shadow: 0 0 0 3px var(--theme-bg-accent), var(--theme-shadow-lg);
  transform: translateY(-1px); /* 미세한 상승 효과 */
}

.input:hover {
  border-color: var(--theme-border-hover);
}

.input::placeholder {
  color: var(--theme-text-tertiary);
  transition: color 0.3s ease;
}

/* 모바일에서 폰트 크기 조정 */
@media (max-width: 1024px) {
  .input {
    font-size: 16px; /* iOS Safari 자동 확대 방지 */
    padding: 14px var(--spacing-3);
  }
}

.input-group {
  margin-bottom: var(--spacing-4);
}

.input-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--spacing-2);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success {
  background: var(--success-100);
  color: var(--success-600);
}

.badge-inactive {
  background: var(--gray-100);
  color: var(--gray-600);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
}

.modal-body {
  padding: var(--spacing-6);
}

.modal-footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--gray-200);
  display: flex;
  gap: var(--spacing-3);
  justify-content: flex-end;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
  .grid-cols-2,
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
  
  /* header와 sidebar-header 높이는 이미 1159px 이하에서 설정됨 */
  
  .page-title {
    font-size: 1.25rem !important;
  }
  
  /* 테이블 터치 최적화 */
  .table td {
    padding: 16px !important; /* 터치하기 편한 패딩 */
    min-height: 48px !important;
  }
  
  .table button,
  .table .btn {
    min-height: 40px !important; /* 테이블 내 버튼 터치 최적화 */
    padding: 8px 12px !important;
  }
  
  /* 카드 터치 최적화 */
  .card {
    border-radius: 16px !important; /* 더 둥근 모서리 */
    margin-bottom: 20px !important; /* 카드 간격 증가 */
  }
  
  .stat-card {
    border-radius: 16px !important;
    padding: 20px !important; /* 더 넓은 패딩 */
    margin-bottom: 16px !important;
    transition: all 0.2s ease !important;
  }
  
  .stat-card:active {
    transform: scale(0.98) !important; /* 터치 피드백 */
  }
  
  /* 테이블 가로 스크롤 개선 */
  .table-container {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important; /* iOS 스무스 스크롤 */
    border-radius: 12px !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
  }
  
  .table {
    min-width: 600px !important; /* 최소 너비 보장 */
  }
  
  /* 페이지 컨텐츠 터치 스크롤 개선 */
  .page-content {
    -webkit-overflow-scrolling: touch !important; /* iOS 스무스 스크롤 */
    overscroll-behavior-y: contain !important; /* 바운스 효과 제한 */
  }
  
  /* 그리드 반응형 개선 */
  .stats-grid {
    grid-template-columns: 1fr !important; /* 태블릿에서 단일 컬럼 */
    gap: 16px !important;
  }
  
  /* 모달 터치 최적화 */
  .modal {
    margin: 20px !important;
    border-radius: 20px !important;
    max-height: calc(100vh - 40px) !important;
  }
  
  .modal .modal-header {
    padding: 24px !important;
    min-height: 60px !important;
  }
  
  .modal .modal-body {
    padding: 24px !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }
  
  
  /* 사이드바 토글 버튼 - 모바일/태블릿에서만 표시 */
  .sidebar-toggle-container {
    display: block !important;
    padding: var(--spacing-3) !important;
    margin-top: var(--spacing-4) !important;
    border-top: 1px solid var(--gray-200) !important;
  }
  
  .sidebar-toggle-btn {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    min-height: 44px !important; /* 터치 타겟 최소 크기 보장 */
    height: 3rem !important; /* 48px로 증가 */
    padding: var(--spacing-3) !important;
    background: var(--gray-50) !important;
    border: 1px solid var(--gray-200) !important;
    border-radius: var(--radius-lg) !important;
    color: var(--gray-600) !important;
    font-size: 1rem !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    /* 터치 피드백 개선 */
    -webkit-tap-highlight-color: rgba(59, 130, 246, 0.3) !important;
    user-select: none !important;
  }
  
  .sidebar-toggle-btn:hover,
  .sidebar-toggle-btn:focus {
    background: var(--gray-100) !important;
    color: var(--gray-900) !important;
    transform: translateY(-1px) !important; /* 미세한 상승 효과 */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
  }
  
  /* 터치 활성화 상태 */
  .sidebar-toggle-btn:active {
    transform: translateY(0) !important;
    background: var(--gray-200) !important;
  }
  
  /* 사이드바 오버레이 모드 */
  .sidebar.overlay-mode {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    height: 100vh !important;
    z-index: 1000 !important;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    -webkit-backdrop-filter: blur(10px) !important;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1) !important;
  }
  
  .sidebar.overlay-mode.collapsed {
    width: 4rem !important;
  }
  
  .sidebar.overlay-mode.collapsed .sidebar-header {
    padding: 16px 8px !important;
    justify-content: center !important;
  }
  
  .sidebar.overlay-mode.collapsed .logo span {
    display: none !important;
  }
  
  .sidebar.overlay-mode.collapsed .nav-link span {
    display: none !important;
  }
  
  .sidebar.overlay-mode.collapsed .nav-link {
    justify-content: center !important;
    padding: 12px 8px !important;
  }
  
  .sidebar.overlay-mode.collapsed .sidebar-footer {
    display: none !important;
  }
  
  .sidebar.overlay-mode.collapsed .sidebar-toggle-container {
    padding: var(--spacing-2) !important;
  }
  
  .sidebar.overlay-mode.collapsed .sidebar-toggle-btn span {
    display: none !important;
  }
}

/* 데스크톱에서는 토글 버튼 숨김 - 1025px 이상에서만 적용 */
@media (min-width: 1025px) {
  .sidebar-toggle-container {
    display: none !important;
  }
}

/* 1160px 미만에서 header 높이 통일 */
@media (max-width: 1159px) {
  .header {
    height: 64px !important;
    padding: 16px var(--spacing-4) !important;
  }
  
  .sidebar-header {
    height: 64px !important;
    padding: 16px var(--spacing-4) !important;
  }
}

/* 모바일/태블릿에서만 토글 버튼 표시 및 오버레이 모드 활성화 */
@media (max-width: 1024px) {
  .sidebar-toggle-container {
    display: block !important;
  }
  
  /* 헤더에 모바일 토글 버튼 추가 */
  .header {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    position: relative !important;
  }
  
  .header::before {
    content: '' !important;
    position: absolute !important;
    left: 16px !important;
    width: 40px !important;
    height: 40px !important;
    background: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 6h16M4 12h16M4 18h16'/%3e%3c/svg%3e") no-repeat center !important;
    background-size: 24px !important;
    border-radius: 8px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    opacity: 0.7 !important;
  }
  
  .header::before:hover {
    background-color: var(--gray-100) !important;
    opacity: 1 !important;
  }
  
  .header::before:active {
    transform: scale(0.95) !important;
    background-color: var(--gray-200) !important;
  }
  
  .page-title {
    margin-left: 60px !important; /* 토글 버튼 공간 확보 */
    flex: 1 !important;
  }
  
  /* 모바일에서 사이드바를 완전한 오버레이 모드로 전환 */
  .sidebar {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    height: 100vh !important;
    z-index: 1000 !important;
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    box-shadow: 4px 0 25px rgba(0, 0, 0, 0.15) !important;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
    width: 16rem !important; /* 고정 너비 */
  }
  
  /* 기본 상태: 완전히 숨김 */
  .sidebar.hidden {
    transform: translateX(-100%) !important;
  }
  
  /* 접힌 상태: 아이콘만 보임 (64px) */
  .sidebar.collapsed {
    transform: translateX(-192px) !important; /* 256px - 64px = 192px 만큼 숨김 */
  }
  
  .sidebar.collapsed .sidebar-header {
    padding: 16px 8px !important;
    justify-content: center !important;
  }
  
  .sidebar.collapsed .logo span {
    display: none !important;
  }
  
  .sidebar.collapsed .nav-link span {
    display: none !important;
  }
  
  .sidebar.collapsed .nav-link {
    justify-content: center !important;
    padding: 12px 8px !important;
  }
  
  .sidebar.collapsed .sidebar-footer {
    display: none !important;
  }
  
  .sidebar.collapsed .sidebar-toggle-container {
    padding: var(--spacing-2) !important;
  }
  
  /* 펼친 상태: 전체 표시 */
  .sidebar.expanded {
    transform: translateX(0) !important;
  }
  
  .main-content {
    margin-left: 0 !important; /* 오버레이 모드: 항상 전체 너비 */
    width: 100% !important;
    transition: filter 0.3s ease !important;
  }
  
  /* 사이드바가 펼쳐진 상태에서 메인 컨텐츠 흐리게 */
  .sidebar.expanded ~ .main-content {
    filter: blur(1px) brightness(0.7) !important;
  }
  
  /* 배경 오버레이 (펼친 상태에서만) - 클릭 가능한 닫기 영역 */
  .sidebar.expanded::before {
    content: '' !important;
    position: fixed !important;
    top: 0 !important;
    left: 16rem !important;
    right: 0 !important;
    bottom: 0 !important;
    background: rgba(0, 0, 0, 0.3) !important; /* 약간 더 진한 배경으로 클릭 영역 암시 */
    z-index: 999 !important; /* 메인 컨텐츠보다 위에 위치하여 클릭 가능 */
    backdrop-filter: blur(3px) !important;
    -webkit-backdrop-filter: blur(3px) !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
    /* 터치 최적화 */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1) !important;
    touch-action: manipulation !important;
  }
  
  /* 오버레이 호버/터치 피드백 */
  .sidebar.expanded::before:hover {
    background: rgba(0, 0, 0, 0.4) !important;
  }
  
  /* 오버레이 활성화 피드백 */
  .sidebar.expanded::before:active {
    background: rgba(0, 0, 0, 0.5) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
  }
  
  /* 동적 피드백 효과 (JavaScript에서 제어) */
  .sidebar.expanded::before {
    background: var(--overlay-feedback, rgba(0, 0, 0, 0.3)) !important;
  }
  
  /* 클릭 리플 효과 애니메이션 */
  @keyframes overlayClickRipple {
    0% {
      background: rgba(0, 0, 0, 0.6) !important;
      transform: scale(1) !important;
    }
    100% {
      background: rgba(0, 0, 0, 0.3) !important;
      transform: scale(1.02) !important;
    }
  }
  
  .sidebar.expanded.click-feedback::before {
    animation: overlayClickRipple 0.2s ease-out !important;
  }
  
  /* 네비게이션 피드백 효과 */
  .sidebar.navigation-feedback {
    transform: translateX(-2px) !important;
    transition: transform 0.2s ease-out !important;
  }
  
  .sidebar.navigation-feedback .nav-link.active {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8) !important;
    color: white !important;
    transform: scale(0.98) !important;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3) !important;
  }
  
  /* 네비게이션 클릭 시 즉각적인 시각적 피드백 */
  @keyframes navigationSuccess {
    0% {
      background: var(--primary-50) !important;
      transform: scale(1) !important;
    }
    50% {
      background: var(--primary-100) !important;
      transform: scale(1.02) !important;
    }
    100% {
      background: var(--primary-50) !important;
      transform: scale(1) !important;
    }
  }
  
  .nav-link.navigation-clicked {
    animation: navigationSuccess 0.3s ease-out !important;
  }
  
  /* 접근성: 클릭 영역임을 나타내는 시각적 힌트 */
  .sidebar.expanded::before {
    /* 포커스 시 더 명확한 시각적 표시 */
    outline: 0 !important;
  }
  
  /* 고대비 모드에서 오버레이 가시성 개선 */
  @media (prefers-contrast: high) {
    .sidebar.expanded::before {
      background: rgba(0, 0, 0, 0.7) !important;
      border: 2px solid rgba(255, 255, 255, 0.5) !important;
    }
  }
  
  /* 애니메이션 감소 모드에서 피드백 단순화 */
  @media (prefers-reduced-motion: reduce) {
    .sidebar.expanded.click-feedback::before {
      animation: none !important;
      background: rgba(0, 0, 0, 0.5) !important;
      transition: background 0.1s ease !important;
    }
  }
  
  /* 터치 기기에서 더 명확한 시각적 피드백 */
  @media (pointer: coarse) {
    .sidebar.expanded::before {
      background: rgba(0, 0, 0, 0.35) !important; /* 터치 기기에서 약간 더 진한 배경 */
    }
    
    .sidebar.expanded::before:active {
      background: rgba(0, 0, 0, 0.6) !important;
    }
  }
  
  /* 스와이프 제스처 지원을 위한 터치 영역 */
  .sidebar::after {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    right: -20px !important;
    width: 20px !important;
    height: 100% !important;
    background: transparent !important;
    z-index: 1001 !important;
    touch-action: pan-x !important;
  }
  
  /* 메인 컨텐츠 스와이프 영역 */
  .main-content::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 20px !important;
    height: 100% !important;
    background: transparent !important;
    z-index: 1000 !important;
    touch-action: pan-x !important;
    pointer-events: none !important;
  }
  
  .sidebar.collapsed ~ .main-content::before,
  .sidebar.hidden ~ .main-content::before {
    pointer-events: auto !important;
  }
}

.header-left {
  display: flex !important;
  align-items: center !important;
}

/* 사이드바 접기 상태 - 데스크톱용 */
.sidebar.collapsed {
  width: 4rem !important;
  transition: width 0.3s ease !important;
}

.sidebar.collapsed .sidebar-header {
  padding: 20px 8px !important;
  justify-content: center !important;
}

.sidebar.collapsed .logo span {
  display: none !important;
}

.sidebar.collapsed .nav-link span {
  display: none !important;
}

.sidebar.collapsed .nav-link {
  justify-content: center !important;
  padding: 12px 8px !important;
}

.sidebar.collapsed .sidebar-footer {
  display: none !important;
}

/* 사이드바 일반 상태에 transition 추가 */
.sidebar {
  transition: width 0.3s ease !important;
}

/* Utilities */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.text-sm {
  font-size: 0.875rem;
}

.text-xs {
  font-size: 0.75rem;
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-6 {
  margin-bottom: var(--spacing-6);
}

.mt-2 {
  margin-top: var(--spacing-2);
}

.mt-4 {
  margin-top: var(--spacing-4);
}

.space-y-3 > * + * {
  margin-top: var(--spacing-3);
}

.space-y-4 > * + * {
  margin-top: var(--spacing-4);
}

.space-y-6 > * + * {
  margin-top: var(--spacing-6);
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--spacing-2);
}

.gap-3 {
  gap: var(--spacing-3);
}

.w-full {
  width: 100%;
}

.max-w-md {
  max-width: 28rem;
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--gray-300);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 1s ease-in-out infinite;
}

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

/* v0.3.4 엔터프라이즈급 CSS 성능 최적화 완성\! */

/* 🔍 ANCHOR_SEARCH: Performance Optimizations v0.3.4 */
/* ========================================
   v0.3.4 성능 최적화 시스템
   ======================================== */

/* 1. Critical Rendering Path 최적화 */
.critical-content {
  contain: layout style paint;
  will-change: auto; /* 기본적으로 비활성화 */
}

.critical-content.animating {
  will-change: transform, opacity;
}

/* 2. 모바일 우선 반응형 시스템 강화 */
/* Enhanced Mobile-first Responsive System */
@media (max-width: 767px) {
  .sidebar {
    transform: translate3d(-100%, 0, 0);
    will-change: transform;
  }
  
  .sidebar.open {
    transform: translate3d(0, 0, 0);
  }
  
  .main-content {
    width: 100% \!important;
    padding: var(--space-sm, 0.5rem) \!important;
  }
  
  /* 터치 타겟 크기 최적화 */
  .btn, .nav-link, button {
    min-height: 44px;
    min-width: 44px;
  }
}

/* 3. 고성능 애니메이션 시스템 */
.smooth-transition {
  transition: transform var(--transition-base, 0.2s), opacity var(--transition-base, 0.2s);
  will-change: transform, opacity;
}

.smooth-transition:not(:hover):not(:focus):not(.active) {
  will-change: auto;
}

/* 4. 접근성 및 사용자 환경 설정 지원 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms \!important;
    transition-duration: 0.01ms \!important;
  }
}

/* 5. 성능 최적화 유틸리티 */
.gpu-optimized {
  transform: translateZ(0);
  backface-visibility: hidden;
}

.hover-optimized:hover {
  transform: translate3d(0, -2px, 0);
  transition: transform 0.15s ease;
}

/* ========================================
   📱 v0.3.6 모바일 네이티브급 터치 최적화 시스템
   ======================================== */

/* 🚀 네이티브급 터치 피드백 시스템 */
.touch-feedback {
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.touch-feedback::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  pointer-events: none;
  z-index: 1;
}

.touch-feedback:active::before {
  width: 200px;
  height: 200px;
}

/* 🎯 향상된 터치 타겟 시스템 */
@media (pointer: coarse) {
  /* 모든 클릭 가능한 요소 44px 최소 보장 */
  button, .btn, .nav-link, a, input, select, textarea, [role="button"], [tabindex="0"] {
    min-height: 44px !important;
    min-width: 44px !important;
    position: relative;
  }
  
  /* 터치 영역 확장 */
  .touch-extend {
    position: relative;
  }
  
  .touch-extend::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    z-index: -1;
  }
  
  /* 네이티브급 스크롤링 */
  .native-scroll {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    scroll-behavior: smooth;
  }
  
  /* 터치 드래그 방지 (이미지 등) */
  .no-touch-drag {
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
  }
}

/* 🌟 스와이프 제스처 지원 시스템 */
.swipe-container {
  position: relative;
  touch-action: pan-x pan-y;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.swipe-indicator {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 40px;
  background: var(--theme-border-secondary);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.swipe-indicator.left {
  left: 8px;
}

.swipe-indicator.right {
  right: 8px;
}

.swipe-active .swipe-indicator {
  opacity: 0.6;
}

/* 📱 모바일 앱 느낌의 애니메이션 */
@keyframes mobilePress {
  0% { transform: scale(1); }
  50% { transform: scale(0.97); }
  100% { transform: scale(1); }
}

@keyframes mobileSlide {
  0% { transform: translateX(0); opacity: 1; }
  100% { transform: translateX(-100%); opacity: 0; }
}

.mobile-press:active {
  animation: mobilePress 0.15s ease-out;
}

.mobile-slide-out {
  animation: mobileSlide 0.3s ease-out forwards;
}

/* 🎨 모바일 우선 반응형 그리드 시스템 */
@media (max-width: 767px) {
  .mobile-stack {
    flex-direction: column !important;
    gap: 1rem !important;
  }
  
  .mobile-full {
    width: 100% !important;
    max-width: none !important;
  }
  
  .mobile-center {
    text-align: center !important;
    justify-content: center !important;
  }
  
  .mobile-hide {
    display: none !important;
  }
  
  /* 모바일 전용 풀스크린 모달 */
  .modal {
    max-width: 100% !important;
    max-height: 100% !important;
    border-radius: 0 !important;
    margin: 0 !important;
  }
  
  .modal-overlay {
    padding: 0 !important;
  }
}

/* 🔄 Pull-to-Refresh 시각적 표시 */
.pull-refresh-container {
  position: relative;
  overflow: hidden;
}

.pull-refresh-indicator {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  border: 3px solid var(--theme-border-secondary);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
}

.pull-refresh-active .pull-refresh-indicator {
  top: 20px;
  opacity: 1;
  animation: spin 1s linear infinite;
}

/* 🎯 포커스 관리 (모바일 접근성) */
@media (max-width: 767px) {
  :focus {
    outline: 3px solid var(--primary) !important;
    outline-offset: 2px !important;
    border-radius: 4px !important;
  }
  
  .skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    transition: top 0.3s ease;
  }
  
  .skip-link:focus {
    top: 6px;
  }
}

/* ========================================
   v0.3.6 모바일 + 다크모드 최적화 완료! 🚀📱🌙
   
   주요 완성 사항:
   ✅ 완전한 다크모드 테마 시스템
   ✅ 모바일 네이티브급 터치 최적화
   ✅ 44px+ 터치 타겟 보장
   ✅ 스와이프 제스처 지원
   ✅ 네이티브급 애니메이션 시스템
   ✅ 모바일 앱 wrapping 준비 완료
   ======================================== */