/* ============================================================
   Building AI Operations Hub (楼宇 AI 运维中枢) - Styles
   Style: Corporate Clean (企业简洁风)
   Palette: Slate-50 (#F8FAFC), Slate-900 (#0F172A), Corporate Blue (#2563EB)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ============================================================
   1. Design Tokens (CSS Custom Properties)
   ============================================================ */
:root {
  /* Background Colors */
  --bg-primary: #F8FAFC;        /* Slate-50 */
  --bg-secondary: #F1F5F9;      /* Slate-100 */
  --bg-card: #FFFFFF;           /* Pure White for Clean Cards */
  --bg-glass: rgba(15, 23, 42, 0.02);

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Colors */
  --text-primary: #0F172A;      /* Slate-900 */
  --text-secondary: #475569;    /* Slate-600 */
  --text-muted: #94A3B8;        /* Slate-400 */
  --border-color: #E2E8F0;      /* Slate-200 */
  --border-focus: #2563EB;      /* Corporate Blue */

  /* Corporate Clean Semantic Colors (Solid, Professional, No Neon) */
  --accent-blue: #2563EB;       /* Primary Action Blue */
  --accent-blue-hover: #1D4ED8;
  --accent-green: #10B981;      /* Success State Emerald */
  --accent-red: #EF4444;        /* Danger State Red */
  --accent-orange: #F59E0B;     /* Warning State Amber */
  --accent-purple: #6366F1;     /* Indigo */
  
  /* Layout Dimensions */
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --card-radius: 8px;           /* Standard rounded-lg corners */
  --transition-speed: 0.2s;
}

/* ============================================================
   2. Reset & Base Styles
   ============================================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-primary);
  font-family: var(--font-family);
  color: var(--text-primary);
  display: flex;
  flex-direction: row;
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Rounded corners enforced */
input, select, textarea, button {
  border-radius: 8px !important;
}

/* ============================================================
   3. Layout Structure
   =========================================================== */

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
}

.sidebar-logo {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 20px;
}

.logo-text h1 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.logo-text span {
  font-size: 9px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
  display: block;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-speed);
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px !important; /* Overwrite round-none */
}

.nav-item i, .nav-item svg {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: color var(--transition-speed);
}

.nav-item:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.nav-item:hover i, .nav-item:hover svg {
  color: var(--text-secondary);
}

.nav-item.active {
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent-blue);
  font-weight: 600;
}

.nav-item.active i, .nav-item.active svg {
  color: var(--accent-blue);
}

.nav-badge {
  margin-left: auto;
  background: var(--accent-red);
  color: #FFFFFF;
  font-size: 10px;
  padding: 1px 6px;
  font-weight: 700;
  border-radius: 10px !important;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  background: var(--bg-secondary);
}

.system-status {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.status-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50% !important;
  display: inline-block;
  background: var(--text-muted);
}

.status-dot.online {
  background: var(--accent-green);
}

/* Main Content Area */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-primary);
}

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.breadcrumb {
  font-size: 12px;
  color: var(--text-muted);
}

.topbar-center {
  display: flex;
  align-items: center;
  gap: 20px;
}

.datetime, .weather {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.datetime i, .weather i {
  color: var(--text-muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.alert-badge {
  position: relative;
  cursor: pointer;
  padding: 8px;
  border: 1px solid var(--border-color);
  background: #FAFBFC;
  transition: all var(--transition-speed);
  border-radius: 6px !important;
}

.alert-badge:hover {
  background: var(--bg-secondary);
  border-color: var(--text-muted);
}

.alert-badge .count {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--accent-red);
  color: #FFFFFF;
  font-size: 9px;
  font-weight: 700;
  min-width: 14px;
  height: 14px;
  padding: 0 3px;
  border-radius: 50% !important;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50% !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
  background: var(--accent-blue);
  color: #FFFFFF;
}

/* Content Area */
.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1; /* Slate-300 */
  border-radius: 3px !important;
}
::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* ============================================================
   4. Grid Layouts
   =========================================================== */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 20px; }
.grid-3-2 { display: grid; grid-template-columns: 3fr 2fr; gap: 20px; }

@media (max-width: 1200px) {
  .grid-4, .grid-3, .grid-3-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .grid-4, .grid-3, .grid-2, .grid-3-2 { grid-template-columns: 1fr; }
}

/* ============================================================
   5. Card Components (rounded-xl, shadow-sm, bg-white)
   =========================================================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px !important; /* rounded-xl */
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  padding: 24px;
  transition: all var(--transition-speed);
}

.card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title i, .card-title svg {
  color: var(--accent-blue);
  width: 16px;
  height: 16px;
}

.card-actions {
  display: flex;
  gap: 6px;
}

.card-action-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px !important;
  transition: all var(--transition-speed);
}

.card-action-btn:hover, .card-action-btn.active {
  background: var(--accent-blue);
  color: #FFFFFF;
  border-color: var(--accent-blue);
}

/* ============================================================
   6. KPI Cards (Corporate Clean Style)
   =========================================================== */
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px !important;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-speed);
}

.kpi-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px !important;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #FFFFFF;
}

/* Give solid business colors instead of gradients */
.kpi-card:nth-child(1) .kpi-icon { background: var(--accent-blue); }
.kpi-card:nth-child(2) .kpi-icon { background: var(--accent-green); }
.kpi-card:nth-child(3) .kpi-icon { background: var(--accent-purple); }
.kpi-card:nth-child(4) .kpi-icon { background: var(--accent-orange); }

.kpi-info {
  flex: 1;
}

.kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.kpi-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 1px;
}

.kpi-trend {
  font-size: 11px;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.kpi-trend.up { color: var(--accent-green); }
.kpi-trend.down { color: var(--accent-red); }

/* ============================================================
   7. Functional UI Components
   =========================================================== */

/* Sections */
.section {
  display: none;
}

.section.active {
  display: block;
}

.section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

/* Charts container */
.chart-container {
  position: relative;
  width: 100%;
  height: 260px;
}
.chart-container.large { height: 340px; }
.chart-container.small { height: 180px; }

/* Alerts list */
.alert-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow-y: auto;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  font-size: 13px;
  transition: all var(--transition-speed);
}

.alert-item:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

.alert-item.critical { border-left: 4px solid var(--accent-red); }
.alert-item.warning { border-left: 4px solid var(--accent-orange); }
.alert-item.info { border-left: 4px solid var(--accent-blue); }

.alert-icon {
  width: 28px;
  height: 28px;
  border-radius: 50% !important;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
}

.alert-item.critical .alert-icon { color: var(--accent-red); }
.alert-item.warning .alert-icon { color: var(--accent-orange); }
.alert-item.info .alert-icon { color: var(--accent-blue); }

.alert-content {
  flex: 1;
}

.alert-message {
  font-weight: 500;
  color: var(--text-primary);
}

.alert-time {
  font-size: 10px;
  color: var(--text-muted);
}

/* Control Panel */
.control-panel {
  display: grid;
  gap: 10px;
}

.control-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
}

.control-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.control-value {
  font-size: 13px;
  font-weight: 600;
}

/* Toggle Switch */
.toggle-switch {
  width: 42px;
  height: 22px;
  border-radius: 12px !important;
  background: #CBD5E1;
  position: relative;
  cursor: pointer;
  transition: background-color var(--transition-speed);
}

.toggle-switch::after {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50% !important;
  background: #FFFFFF;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-speed);
}

.toggle-switch.active {
  background: var(--accent-green);
}

.toggle-switch.active::after {
  transform: translateX(20px);
}

/* Elevator Simulation */
.elevator-shaft {
  display: flex;
  gap: 16px;
  justify-content: center;
  padding: 10px 0;
}

.elevator-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.shaft {
  width: 48px;
  height: 200px;
  background: #F1F5F9;
  border: 1px solid var(--border-color);
  border-radius: 6px !important;
  position: relative;
}

.elevator-car {
  width: 40px;
  height: 24px;
  background: var(--accent-blue);
  border-radius: 4px !important;
  position: absolute;
  left: 3px;
  transition: top 0.8s ease-in-out;
}

.elevator-label {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.elevator-floor {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
}

/* Vector Map (Inspection section) */
.floor-map {
  width: 100%;
  height: 300px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  position: relative;
  overflow: hidden;
}

.floor-map svg {
  width: 100%;
  height: 100%;
}

.floor-map .inspection-path {
  stroke: var(--accent-blue);
  stroke-width: 2;
  stroke-dasharray: 4;
  opacity: 0.6;
}

.floor-map .inspector-dot {
  fill: var(--accent-blue);
  r: 5;
}

/* Task list */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
}

.task-status {
  width: 8px;
  height: 8px;
  border-radius: 50% !important;
  background: var(--text-muted);
}

.task-status.completed { background: var(--accent-green); }
.task-status.in-progress { background: var(--accent-blue); }

.task-info .task-name {
  font-size: 13px;
  font-weight: 600;
}

.task-info .task-detail {
  font-size: 11px;
  color: var(--text-muted);
}

.task-progress {
  margin-left: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
}

/* Progress bar */
.progress-bar {
  width: 100%;
  height: 6px;
  background: #E2E8F0;
  border-radius: 3px !important;
  margin-top: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent-blue);
  transition: width 0.4s ease;
}

.progress-fill.cyan { background: var(--accent-blue); }
.progress-fill.green { background: var(--accent-green); }
.progress-fill.orange { background: var(--accent-orange); }

/* Deformation Sensor Grid */
.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.sensor-card {
  padding: 16px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  text-align: center;
  transition: all var(--transition-speed);
}

.sensor-card:hover {
  background: #FFFFFF;
  border-color: var(--accent-blue);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.sensor-id {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
}

.sensor-value {
  font-size: 20px;
  font-weight: 700;
  margin: 4px 0;
  color: var(--text-primary);
}

.sensor-unit {
  font-size: 11px;
  color: var(--text-muted);
}

.sensor-status {
  margin-top: 8px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px !important;
  font-weight: 600;
  display: inline-block;
}

.sensor-status.normal { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.sensor-status.warning { background: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }
.sensor-status.danger { background: rgba(239, 68, 68, 0.1); color: var(--accent-red); }

/* Warning level panel */
.warning-levels {
  display: flex;
  gap: 12px;
}

.warning-level {
  flex: 1;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  text-align: center;
}

.warning-level.red { background: rgba(239, 68, 68, 0.05); border-color: rgba(239, 68, 68, 0.2); }
.warning-level.orange { background: rgba(245, 158, 11, 0.05); border-color: rgba(245, 158, 11, 0.2); }
.warning-level.yellow { background: rgba(220, 38, 38, 0.02); border-color: var(--border-color); }
.warning-level.green { background: rgba(16, 185, 129, 0.05); border-color: rgba(16, 185, 129, 0.2); }

.warning-count {
  font-size: 22px;
  font-weight: 700;
}

.warning-level.red .warning-count { color: var(--accent-red); }
.warning-level.orange .warning-count { color: var(--accent-orange); }
.warning-level.yellow .warning-count { color: var(--accent-blue); }
.warning-level.green .warning-count { color: var(--accent-green); }

.warning-label {
  font-size: 11px;
  color: var(--text-secondary);
}

/* Building 3D View */
.building-3d {
  perspective: 800px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 260px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 12px !important;
  overflow: hidden;
}

.building-model {
  transform-style: preserve-3d;
  transform: rotateX(-15deg) rotateY(-25deg);
  animation: building-rotate 25s linear infinite;
  width: 100px;
  margin: 0 auto;
}

.building-floor {
  width: 100px;
  height: 10px;
  margin: 0 auto 2px auto;
  position: relative;
  transform-style: preserve-3d;
  transition: all var(--transition-speed) ease;
}

.floor-face {
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 10px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 8px;
  font-weight: 600;
  color: var(--text-secondary);
  box-sizing: border-box;
  transition: all var(--transition-speed) ease;
}

.floor-front { transform: rotateY(0deg) translateZ(50px); }
.floor-back { transform: rotateY(180deg) translateZ(50px); }
.floor-left { transform: rotateY(-90deg) translateZ(50px); }
.floor-right { transform: rotateY(90deg) translateZ(50px); }

.building-floor:hover .floor-face {
  background: rgba(37, 99, 235, 0.2);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.building-floor.active .floor-face {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.building-floor.alert .floor-face {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--accent-red);
  color: var(--accent-red);
  animation: pulse 2s infinite;
}

/* Heatmap */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}

.heatmap-cell {
  aspect-ratio: 1;
  background: #E2E8F0;
  border-radius: 4px !important;
  transition: all var(--transition-speed);
  cursor: pointer;
}

.heatmap-cell:hover {
  transform: scale(1.05);
}

.heatmap-cell.low { background: rgba(16, 185, 129, 0.2); }
.heatmap-cell.medium { background: rgba(245, 158, 11, 0.3); }
.heatmap-cell.high { background: rgba(239, 68, 68, 0.3); }
.heatmap-cell.critical { background: var(--accent-red); }

/* Metric Row */
.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.metric-name {
  font-size: 13px;
  color: var(--text-secondary);
}

.metric-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50% !important;
  background: var(--accent-blue);
  border: 2px solid var(--bg-primary);
}

.timeline-date {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-content {
  font-size: 13px;
  color: var(--text-primary);
}

/* AI Strategy Cards */
.strategy-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.strategy-card {
  padding: 16px;
  background: #FAFBFC;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  transition: all var(--transition-speed);
}

.strategy-card:hover {
  background: #FFFFFF;
  border-color: var(--accent-blue);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.strategy-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.strategy-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-blue);
}

.strategy-confidence {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.strategy-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ============================================================
   8. Utility Classes
   =========================================================== */
.text-cyan { color: var(--accent-blue); }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-orange { color: var(--accent-orange); }
.text-purple { color: var(--accent-purple); }
.text-yellow { color: var(--accent-orange); }
.text-muted { color: var(--text-muted); }
.font-mono { font-family: monospace; }
.mb-20 { margin-bottom: 20px; }
.mt-16 { margin-top: 16px; }
.gap-20 { gap: 20px; }

/* ============================================================
   9. Animations & Interactive State
   =========================================================== */
@keyframes building-rotate {
  0% { transform: rotateX(-15deg) rotateY(-25deg); }
  100% { transform: rotateX(-15deg) rotateY(335deg); }
}

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

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); opacity: 1; }
  70% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); opacity: 0.8; }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); opacity: 1; }
}

@keyframes scanLineOverlay {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100%); }
}

/* Hamburger mobile system */
.hamburger-menu {
  display: none;
  font-size: 20px;
  cursor: pointer;
  border: 1px solid var(--border-color);
  padding: 6px;
  border-radius: 6px !important;
}

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-speed) ease-in-out;
  }
  .sidebar.active {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .hamburger-menu {
    display: block;
  }
}

/* ============================================================
   AR Viewport (AI Glasses Inspection - Corporate Clean)
   ============================================================ */
.ar-viewport {
  position: relative;
  width: 100%;
  height: 320px;
  background-color: #E2E8F0;
  background-image: 
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 20px 20px;
  border-radius: 12px !important;
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.03);
}

/* Scanline Animation overlay */
.ar-viewport::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.4), transparent);
  animation: scanLineOverlay 4s linear infinite;
  pointer-events: none;
}

.ar-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 12px;
  pointer-events: none;
}

.ar-hud-top,
.ar-hud-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2;
  width: 100%;
}

.ar-tag {
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: var(--text-secondary);
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px !important;
  letter-spacing: 0.5px;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.ar-tag:first-child {
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.2);
  background: rgba(239, 68, 68, 0.05);
  animation: pulse-border 2s infinite;
}

@keyframes pulse-border {
  0% { border-color: rgba(239, 68, 68, 0.2); }
  50% { border-color: rgba(239, 68, 68, 0.6); }
  100% { border-color: rgba(239, 68, 68, 0.2); }
}

.ar-detection-box {
  position: absolute;
  border: 2px solid var(--accent-red);
  border-radius: 6px !important;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.15);
  pointer-events: auto;
}

.ar-detection-box::before,
.ar-detection-box::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  border-color: var(--accent-red);
  border-style: solid;
}

.ar-detection-box::before {
  top: -2px;
  left: -2px;
  border-width: 2px 0 0 2px;
}

.ar-detection-box::after {
  bottom: -2px;
  right: -2px;
  border-width: 0 2px 2px 0;
}

.ar-detection-box.warning {
  border-color: var(--accent-orange);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.15);
}

.ar-detection-box.warning::before,
.ar-detection-box.warning::after {
  border-color: var(--accent-orange);
}

.ar-box-label {
  position: absolute;
  top: -22px;
  left: 0;
  background: var(--accent-red);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px !important;
  white-space: nowrap;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.ar-detection-box.warning .ar-box-label {
  background: var(--accent-orange);
}

.ar-box-detail {
  position: absolute;
  bottom: -20px;
  left: 0;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.9);
  padding: 1px 4px;
  border-radius: 2px !important;
  font-size: 9px;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid #E2E8F0;
}

/* ============================================================
   Alert History Modal
   ============================================================ */
#alert-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-speed);
}

#alert-modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px !important;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #FAFBFC;
}

.modal-header-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-header-title i, .modal-header-title svg {
  color: var(--accent-blue);
  width: 18px;
  height: 18px;
}

.modal-close-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition-speed);
  display: flex;
  align-items: center;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  background: #FAFBFC;
}

.modal-confirm-btn {
  background: var(--accent-blue);
  color: #FFFFFF;
  border: 1px solid var(--accent-blue);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px !important;
  transition: all var(--transition-speed);
}

.modal-confirm-btn:hover {
  background: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
}

.modal-confirm-btn:active {
  transform: scale(0.98);
}

/* ============================================================
   AI Evolution Center / Agent Hub
   ============================================================ */

.thought-stream-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 280px;
  overflow-y: auto;
  padding: 14px;
  background: rgba(15, 23, 42, 0.01);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  scrollbar-width: none;
}

.thought-stream-container::-webkit-scrollbar {
  display: none;
}

.thought-block {
  padding: 12px 14px;
  border-radius: 8px !important;
  font-size: 13px;
  line-height: 1.5;
  transform: translateY(10px);
  opacity: 0;
  animation: fadeIn 0.4s ease forwards;
}

.thought-block.sensor {
  background: rgba(37, 99, 235, 0.04);
  border-left: 3px solid var(--accent-blue);
  color: var(--text-primary);
}

.thought-block.reasoning {
  background: rgba(124, 58, 237, 0.04);
  border-left: 3px solid var(--accent-purple);
  color: var(--text-primary);
}

.thought-block.action {
  background: rgba(16, 185, 129, 0.04);
  border-left: 3px solid var(--accent-green);
  color: var(--text-primary);
  font-weight: 500;
}

.thought-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.5px;
}

#feedback-input {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px !important;
  padding: 12px;
  font-size: 13px;
  background: #FFFFFF;
  color: var(--text-primary);
  resize: none;
  outline: none;
  box-sizing: border-box;
  font-family: inherit;
  transition: border-color var(--transition-speed);
}

#feedback-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Evolution Tree */
.evolution-tree {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.tree-node {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px;
  border-radius: 10px !important;
  background: rgba(15, 23, 42, 0.01);
  border: 1px solid var(--border-color);
  transition: all var(--transition-speed);
}

.tree-node.active {
  background: rgba(37, 99, 235, 0.03);
  border-color: rgba(37, 99, 235, 0.2);
}

.tree-node.evolving {
  background: rgba(124, 58, 237, 0.03);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.1);
}

.tree-node .node-icon {
  width: 24px;
  height: 24px;
  border-radius: 50% !important;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--border-color);
  color: var(--text-muted);
}

.tree-node.active .node-icon {
  background: var(--accent-blue);
  color: #FFFFFF;
}

.tree-node.evolving .node-icon {
  background: var(--accent-purple);
  color: #FFFFFF;
}

.tree-node .node-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.tree-node .node-desc {
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.tree-line {
  width: 2px;
  height: 16px;
  background: var(--border-color);
  margin-left: 25px;
}

.tree-line.active {
  background: var(--accent-blue);
}

/* Training Overlay */
.training-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  border-radius: 12px !important;
  transition: opacity 0.3s ease;
}

.training-overlay.hidden {
  display: none;
  opacity: 0;
}

.training-status-box {
  text-align: center;
  width: 80%;
  max-width: 320px;
}

.training-status-text {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 14px;
  min-height: 20px;
}

.training-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(15, 23, 42, 0.05);
  border-radius: 3px !important;
  margin-top: 12px;
  overflow: hidden;
}

.training-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  width: 0%;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(37, 99, 235, 0.1);
  border-top-color: var(--accent-blue);
  border-radius: 50% !important;
  display: inline-block;
  animation: rotate-loader 1s linear infinite;
}

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

.feedback-chip:hover {
  background: var(--accent-blue) !important;
  color: #FFFFFF !important;
  border-color: var(--accent-blue) !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.15);
}

.feedback-chip:active {
  transform: scale(0.97);
}