/* 전역 스타일 리셋 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #2d3748;
  background-color: #f7fafc;
}

#root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding: 0;
  background: #f7fafc;
}

.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

/* 로딩 스피너 */
.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #f7fafc;
  color: #718096;
}

.loading-spinner-large {
  width: 48px;
  height: 48px;
  border: 4px solid #e2e8f0;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #e2e8f0;
  border-top: 2px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { 
    opacity: 1;
    transform: scale(1);
  }
  50% { 
    opacity: 0.8;
    transform: scale(1.05);
  }
}

/* 접근 거부 페이지 */
.access-denied-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #f7fafc;
  padding: 24px;
}

.access-denied-content {
  text-align: center;
  max-width: 500px;
  background: white;
  padding: 48px 32px;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.access-denied-icon {
  font-size: 64px;
  margin-bottom: 24px;
}

.access-denied-content h2 {
  color: #2d3748;
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.access-denied-content p {
  color: #718096;
  font-size: 16px;
  margin-bottom: 16px;
  line-height: 1.6;
}

.permission-info,
.role-info {
  background: #f7fafc;
  padding: 12px 16px;
  border-radius: 8px;
  margin: 16px 0;
  font-size: 14px;
}

.permission-info code,
.role-info code {
  background: #e2e8f0;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 13px;
  color: #2d3748;
}

.user-info {
  background: #edf2f7;
  padding: 16px;
  border-radius: 8px;
  margin: 20px 0;
  text-align: left;
}

.user-info p {
  margin-bottom: 8px;
  font-size: 14px;
}

.user-info strong {
  color: #2d3748;
}

.back-button {
  padding: 12px 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 24px;
}

.back-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

/* 유틸리티 클래스 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.p-0 { padding: 0; }
.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.p-4 { padding: 32px; }

/* 반응형 유틸리티 */
.hidden-mobile {
  display: block;
}

.hidden-desktop {
  display: none;
}

@media (max-width: 768px) {
  .hidden-mobile {
    display: none;
  }
  
  .hidden-desktop {
    display: block;
  }
  
  .page-container {
    padding: 16px;
  }
}

/* 스크롤바 스타일링 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e0;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a0aec0;
}

/* 포커스 스타일 */
*:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* 선택 스타일 */
::selection {
  background: rgba(102, 126, 234, 0.2);
  color: #2d3748;
}