/* 근태 검증 관리 시스템 - 개선된 스타일 */

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  color: #333;
  line-height: 1.6;
  min-height: 100vh;
}

/* 뒤로가기 버튼 */
.back-btn {
  background: rgba(255,255,255,0.95);
  color: #667eea;
  border: 3px solid #667eea;
  padding: 12px 24px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
  box-shadow: 0 3px 12px rgba(102, 126, 234, 0.2);
}

.back-btn:hover {
  background: #667eea;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

/* 페이지 헤더 */
.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 16px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 메인 카드 */
.main-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.main-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.loading-card {
  background: white;
  border-radius: 16px;
  padding: 3rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  text-align: center;
}

/* 캘린더 헤더 */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #f0f0f0;
}

.nav-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 12px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.nav-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 24px rgba(102, 126, 234, 0.4);
}

/* 월간 요약 */
.summary-section {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-radius: 16px;
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.summary-title {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 1rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.summary-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  border: 2px solid transparent;
}

.summary-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.summary-card.normal {
  border-color: #10b981;
}

.summary-card.warning {
  border-color: #f59e0b;
}

.summary-card.error {
  border-color: #ef4444;
}

.summary-number {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.summary-card.normal .summary-number {
  color: #10b981;
}

.summary-card.warning .summary-number {
  color: #f59e0b;
}

.summary-card.error .summary-number {
  color: #ef4444;
}

.summary-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #666;
}

/* 요일 헤더 */
.weekday-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.weekday {
  padding: 1rem;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: #64748b;
  background: #f8fafc;
  border-radius: 8px;
}

.weekday.sunday {
  color: #ef4444;
}

.weekday.saturday {
  color: #3b82f6;
}

/* 캘린더 그리드 */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.calendar-day {
  position: relative;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
  border: 2px solid #e2e8f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.calendar-day.hover-enabled:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  border-color: #3b82f6;
}

.calendar-day.selected {
  transform: scale(1.05);
  z-index: 10;
  border-color: #3b82f6;
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3);
}

.calendar-day.loading-state {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  border-color: #3b82f6;
  animation: loading-pulse 1.5s infinite;
}

@keyframes loading-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.calendar-day.error-state {
  background: linear-gradient(135deg, #fecaca 0%, #fca5a5 100%);
  border-color: #ef4444;
  color: #991b1b;
}

.calendar-day.normal {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border-color: #10b981;
  color: #064e3b;
}

.calendar-day.needs-review {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-color: #f59e0b;
  color: #92400e;
}

.calendar-day.missing {
  background: linear-gradient(135deg, #fecaca 0%, #fca5a5 100%);
  border-color: #ef4444;
  color: #991b1b;
}

.calendar-day.no-data {
  background: #f9fafb;
  border-color: #e5e7eb;
  color: #9ca3af;
  position: relative;
}

.calendar-day.no-data::after {
  content: "클릭하여 확인";
  position: absolute;
  bottom: 4px;
  font-size: 10px;
  color: #6b7280;
  opacity: 0;
  transition: opacity 0.3s;
}

.calendar-day.no-data.hover-enabled:hover::after {
  opacity: 1;
}

.status-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.status-dot.pulse {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.status-dot.normal {
  background: #10b981;
}

.status-dot.warning {
  background: #f59e0b;
}

.status-dot.error {
  background: #ef4444;
}

/* 범례 */
.legend {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #64748b;
}

.legend-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.legend-dot.normal {
  background: #10b981;
}

.legend-dot.warning {
  background: #f59e0b;
}

.legend-dot.error {
  background: #ef4444;
}

/* 빈 상태 */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1.5rem;
}

.empty-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #374151;
  margin-bottom: 1rem;
}

.empty-description {
  color: #6b7280;
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

/* 작업자 카드 */
.worker-card {
  background: white;
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 2px solid transparent;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.worker-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.worker-card.normal {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border-color: #10b981;
}

.worker-card.needs-review {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-color: #f59e0b;
}

.worker-card.missing {
  background: linear-gradient(135deg, #fef2f2 0%, #fecaca 100%);
  border-color: #ef4444;
}

.worker-header {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.worker-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.worker-avatar {
  width: 48px;
  height: 48px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: #374151;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.worker-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #374151;
}

.worker-id {
  font-size: 0.875rem;
  color: #6b7280;
  margin-top: 0.25rem;
}

.status-badge {
  font-size: 1.5rem;
  filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.1));
}

/* 데이터 행 */
.data-section {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.data-row {
  display: flex;
  justify-content: between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.data-row:last-child {
  border-bottom: none;
}

.data-label {
  font-weight: 600;
  color: #4b5563;
}

.data-value {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-weight: 700;
  font-size: 1rem;
}

.difference-positive {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-weight: 700;
}

.difference-negative {
  color: #2563eb;
  background: rgba(37, 99, 235, 0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  font-weight: 700;
}

/* 버튼 */
.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: #6b7280;
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(107, 114, 128, 0.3);
}

.btn-secondary:hover {
  background: #4b5563;
  transform: translateY(-2px);
}

.edit-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.875rem;
  width: 100%;
  margin-top: 1rem;
}

.edit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.delete-btn {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

.delete-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

/* 필터 */
.filter-container {
  display: flex;
  justify-content: between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #f0f0f0;
}

.filter-select {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

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

/* 모달 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
}

.modal.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background: white;
  border-radius: 20px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { 
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }
  to { 
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1.5rem;
  border-radius: 20px 20px 0 0;
  display: flex;
  justify-content: between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.close-btn {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 2px solid #f0f0f0;
  background: #f8fafc;
  border-radius: 0 0 20px 20px;
}

/* 폼 요소 */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 700;
  color: #374151;
  font-size: 0.875rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
}

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

.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 1rem;
  resize: vertical;
  min-height: 80px;
  transition: all 0.3s ease;
}

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

/* 메시지 */
.message {
  padding: 1rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  font-weight: 600;
  border: 2px solid transparent;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.message.success {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  color: #065f46;
  border-color: #10b981;
}

.message.error {
  background: linear-gradient(135deg, #fecaca 0%, #fca5a5 100%);
  color: #991b1b;
  border-color: #ef4444;
}

.message.warning {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: #92400e;
  border-color: #f59e0b;
}

.message.loading {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  color: #1e40af;
  border-color: #3b82f6;
}

/* 로딩 스피너 */
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #e5e7eb;
  border-top: 3px solid #3b82f6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 애니메이션 */
.fade-in {
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .summary-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .calendar-day {
    min-height: 60px;
    font-size: 0.875rem;
  }
  
  .worker-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .legend {
    flex-direction: column;
    gap: 1rem;
  }
  
  .modal-content {
    width: 95%;
    margin: 1rem;
  }
  
  .main-card {
    padding: 1.5rem;
  }
  
  .page-header {
    padding: 2rem;
  }
}

@media (max-width: 480px) {
  .calendar-day {
    min-height: 50px;
    font-size: 0.75rem;
  }
  
  .summary-card {
    padding: 1rem;
  }
  
  .summary-number {
    font-size: 1.5rem;
  }
  
  .worker-card {
    padding: 1rem;
  }
  
  .modal-body, .modal-footer {
    padding: 1rem;
  }
}