/* ========================================
   Agentic Edge - Edge Federated AI Ops Dashboard
   화이트 기반 + 블루·보라 그라데이션 디자인
   ======================================== */

/* 전역 변수 정의 */
:root {
  /* 메인 컬러 팔레트 */
  --primary-blue: #4A90E2;
  --primary-purple: #7B68EE;
  --gradient-primary: linear-gradient(135deg, #4A90E2 0%, #7B68EE 100%);
  --gradient-soft: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(123, 104, 238, 0.1) 100%);

  /* 배경 및 표면 */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-card: #FFFFFF;
  --bg-sidebar: #FFFFFF;

  /* 텍스트 컬러 */
  --text-primary: #2C3E50;
  --text-secondary: #6C757D;
  --text-muted: #ADB5BD;

  /* 상태 컬러 */
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #3B82F6;

  /* 그림자 및 테두리 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --border-color: #E5E7EB;
  --border-radius: 0.75rem;

  /* 차트 컬러 */
  --chart-blue: #4A90E2;
  --chart-purple: #7B68EE;
  --chart-green: #10B981;
  --chart-orange: #F59E0B;
  --chart-red: #EF4444;
  --chart-cyan: #06B6D4;

  /* 트랜지션 */
  --transition-base: all 0.3s ease;
}

/* 다크모드 변수 */
body.dark-mode {
  --bg-primary: #1A1D29;
  --bg-secondary: #0F1117;
  --bg-card: #23263A;
  --bg-sidebar: #1E2131;
  --text-primary: #E5E7EB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --border-color: #374151;
}

/* ========================================
   기본 스타일
   ======================================== */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.4;
  overflow: hidden;
  transition: var(--transition-base);
  width: 1920px;
  height: 1080px;
}

/* 숫자 전용 폰트 (모노스페이스) */
.mono, .metric-value, .chart-label, .badge {
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

/* ========================================
   레이아웃
   ======================================== */

#app-container {
  display: flex;
  height: 1080px;
  overflow: hidden;
}

/* 사이드바 스타일 */
#sidebar {
  width: 220px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  position: fixed;
  height: 1080px;
  overflow-y: auto;
  z-index: 1000;
  transition: var(--transition-base);
}

#sidebar::-webkit-scrollbar {
  width: 6px;
}

#sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

#sidebar .navbar-brand {
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 0.5rem 0;
  line-height: 0.6;
}

#sidebar .nav-link {
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  padding: 0.4rem 0.7rem;
  margin-bottom: 0.15rem;
  transition: var(--transition-base);
  font-size: 0.8rem;
  font-weight: 500;
}

#sidebar .nav-link:hover {
  background: var(--gradient-soft);
  color: var(--primary-blue);
}

#sidebar .nav-link.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

#sidebar .nav-link i {
  font-size: 1.1rem;
}

#sidebar .badge {
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 1rem;
}

/* 메인 콘텐츠 영역 */
#main-content {
  margin-left: 220px;
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 1080px;
  overflow: hidden;
  transition: var(--transition-base);
}

/* 상단바 스타일 */
#top-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

#top-bar .status-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  font-size: 0.75rem;
}

#top-bar .status-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

#top-bar .metric-value {
  font-weight: 700;
  color: var(--primary-blue);
  font-size: 1.1rem;
}

/* 페이지 콘텐츠 영역 */
#page-content {
  flex: 1;
  padding: 0.8rem 1rem;
  overflow: hidden;
}

.page-section {
  display: none;
  height: 100%;
  overflow: hidden;
}

.page-section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   카드 컴포넌트
   ======================================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.6rem;
  transition: var(--transition-base);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-header .badge {
  font-size: 0.75rem;
}

.card-body {
  padding: 0.8rem;
}

.card-footer {
  padding: 0.5rem 0.8rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* 그라데이션 카드 */
.card-gradient {
  background: var(--gradient-primary);
  color: white;
  border: none;
}

.card-gradient .card-header,
.card-gradient .card-body,
.card-gradient .card-footer {
  border-color: rgba(255, 255, 255, 0.2);
  color: white;
}

/* KPI 카드 */
.kpi-card {
  text-align: center;
  padding: 0.8rem;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0.3rem 0;
}

.kpi-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.kpi-change {
  font-size: 0.7rem;
  margin-top: 0.3rem;
  font-weight: 500;
}

.kpi-change.positive {
  color: var(--success);
}

.kpi-change.negative {
  color: var(--danger);
}

/* ========================================
   배지 및 상태 표시
   ======================================== */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.8rem;
  border-radius: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.status-badge.online {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.status-badge.offline {
  background: rgba(107, 114, 128, 0.1);
  color: var(--text-muted);
}

.status-badge.degraded {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.status-badge.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

/* ========================================
   차트 컨테이너
   ======================================== */

.chart-container {
  position: relative;
  width: 100%;
  height: 120px;
  margin: 0.5rem 0;
}

.chart-container.large {
  height: 160px;
}

.chart-container.small {
  height: 100px;
}

canvas {
  max-width: 100%;
  height: auto !important;
}

/* ========================================
   테이블 스타일
   ======================================== */

.table-container {
  overflow-x: auto;
  margin: 1rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}

thead {
  background: var(--bg-secondary);
}

th {
  padding: 0.5rem 0.6rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-color);
}

td {
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

tr:hover {
  background: var(--bg-secondary);
}

/* ========================================
   프로그레스 바
   ======================================== */

.progress-bar-container {
  background: var(--bg-secondary);
  border-radius: 1rem;
  overflow: hidden;
  height: 1rem;
  margin: 0.5rem 0;
}

.progress-bar-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 1rem;
  transition: width 0.5s ease;
  position: relative;
  overflow: hidden;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ========================================
   그리드 레이아웃
   ======================================== */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}

.full-width {
  grid-column: 1 / -1;
}

/* ========================================
   MCP 제안 카드
   ======================================== */

.proposal-item {
  background: var(--bg-secondary);
  border-left: 4px solid var(--primary-blue);
  padding: 0.5rem 0.6rem;
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
  transition: var(--transition-base);
}

.proposal-item:hover {
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
}

.proposal-item.approved {
  border-left-color: var(--success);
}

.proposal-item.rejected {
  border-left-color: var(--danger);
}

.proposal-item.pending {
  border-left-color: var(--warning);
}

.proposal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.3rem;
}

.proposal-action {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-primary);
}

.proposal-confidence {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.proposal-reason {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

/* ========================================
   이벤트 로그
   ======================================== */

.event-item {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-base);
}

.event-item:hover {
  background: var(--bg-secondary);
}

.event-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.event-icon.info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
}

.event-icon.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.event-icon.warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.event-icon.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.event-content {
  flex: 1;
}

.event-message {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.event-time {
  font-size: 0.65rem;
  color: var(--text-muted);
}

/* ========================================
   리소스 미터
   ======================================== */

.resource-meter {
  margin: 0.5rem 0;
}

.resource-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  margin-bottom: 0.3rem;
  color: var(--text-secondary);
}

.resource-value {
  font-weight: 700;
  color: var(--text-primary);
}

.meter-bar {
  background: var(--bg-secondary);
  border-radius: 0.5rem;
  height: 0.5rem;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  border-radius: 0.5rem;
  transition: width 0.5s ease;
}

.meter-fill.normal {
  background: var(--gradient-primary);
}

.meter-fill.warning {
  background: linear-gradient(135deg, var(--warning) 0%, #FCD34D 100%);
}

.meter-fill.danger {
  background: linear-gradient(135deg, var(--danger) 0%, #FCA5A5 100%);
}

/* ========================================
   LLM 요약 패널
   ======================================== */

.llm-summary {
  background: var(--gradient-soft);
  border-left: 4px solid var(--primary-purple);
  padding: 0.6rem 0.8rem;
  border-radius: var(--border-radius);
  margin: 0.5rem 0;
}

.llm-summary-item {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.llm-summary-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.llm-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--primary-purple);
}

.llm-text {
  flex: 1;
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--text-primary);
}

/* ========================================
   버튼 스타일
   ======================================== */

.btn {
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.75rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

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

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

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

/* ========================================
   엣지 선택 토글
   ======================================== */

.edge-selector {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 0.6rem;
  background: var(--bg-secondary);
  padding: 0.3rem;
  border-radius: var(--border-radius);
}

.edge-btn {
  flex: 1;
  padding: 0.4rem 0.6rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: calc(var(--border-radius) - 0.25rem);
  font-weight: 600;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition-base);
}

.edge-btn.active {
  background: var(--bg-card);
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

.edge-btn:hover:not(.active) {
  background: var(--bg-card);
}

/* ========================================
   반응형 디자인
   ======================================== */

@media (max-width: 992px) {
  #sidebar {
    transform: translateX(-100%);
  }

  #sidebar.show {
    transform: translateX(0);
  }

  #main-content {
    margin-left: 0;
  }

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

@media (max-width: 768px) {
  #top-bar {
    padding: 1rem;
    flex-wrap: wrap;
  }

  #page-content {
    padding: 1rem;
  }

  .kpi-value {
    font-size: 2rem;
  }

  .chart-container {
    height: 250px;
  }
}

/* ========================================
   유틸리티 클래스
   ======================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary-blue); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.fw-normal { font-weight: 400; }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

/* ========================================
   스크롤바 커스터마이징
   ======================================== */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========================================
   로딩 애니메이션
   ======================================== */

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top-color: var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   인쇄 스타일
   ======================================== */

@media print {
  #sidebar,
  #top-bar,
  .btn {
    display: none;
  }

  #main-content {
    margin-left: 0;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
}