:root {
    --primary: #2563eb;
    --primary-light: #eff6ff;
    --primary-hover: #1d4ed8;
    --bg-body: #f8fafc;
    --card-bg: #ffffff;
    --card-hover: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --item-bg-subtle: #f8fafc;
    --header-bg: #ffffff;
    --sidebar-bg: #ffffff;
    --table-header-bg: #f8fafc;
    --table-border: #f1f5f9;
    --filter-bg: #f1f5f9;
    --chart-grid: #f1f5f9;
    --chart-axis: #cbd5e1;

    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --sidebar-width: 270px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
  }

  [data-theme="dark"] {
    --primary: #3b82f6;
    --primary-light: rgba(59, 130, 246, 0.15);
    --primary-hover: #60a5fa;
    --bg-body: #070d1e;
    --card-bg: #0f172a;
    --card-hover: #14213d;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #1e293b;
    --item-bg-subtle: #131f37;
    --header-bg: #0b1329;
    --sidebar-bg: #0b1329;
    --table-header-bg: #131f37;
    --table-border: #1e293b;
    --filter-bg: #131f37;
    --chart-grid: #1e293b;
    --chart-axis: #334155;

    --success-bg: rgba(16, 185, 129, 0.15);
    --warning-bg: rgba(245, 158, 11, 0.15);
    --danger-bg: rgba(239, 68, 68, 0.15);
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Plus Jakarta Sans', sans-serif; -webkit-tap-highlight-color: transparent; }
  body { background-color: var(--bg-body); color: var(--text-main); min-height: 100vh; display: flex; overflow-x: hidden; }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(7, 13, 30, 0.65);
    backdrop-filter: blur(5px);
    z-index: 999;
  }
  .sidebar-backdrop.show { display: block; }

  /* SIDEBAR */
  .sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .sidebar.collapsed { transform: translateX(-100%); }

  .sidebar-header {
    padding: 24px 20px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--border-color);
  }

  .brand-logo-wrap {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
    flex-shrink: 0;
  }

  .brand-title { font-size: 18px; font-weight: 800; color: var(--text-main); line-height: 1.2; letter-spacing: -0.02em; }
  .brand-subtitle { font-size: 11px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

  .sidebar-menu {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    border-radius: 12px;
    margin-bottom: 4px;
    transition: all 0.2s ease;
  }

  .nav-item i { font-size: 17px; width: 22px; text-align: center; color: var(--text-muted); }

  .nav-item:hover {
    color: var(--primary);
    background: var(--primary-light);
  }
  .nav-item:hover i { color: var(--primary); }

  .nav-item.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
  }
  .nav-item.active i { color: #ffffff; }

  .nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 11px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 99px;
  }

  /* MAIN LAYOUT */
  .main-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin 0.3s ease;
    width: calc(100% - var(--sidebar-width));
  }
  .main-wrapper.full-width {
    margin-left: 0;
    width: 100%;
  }

  .top-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 900;
  }

  .page-info h1 { font-size: 19px; font-weight: 800; color: var(--text-main); line-height: 1.2; }
  .page-info p { font-size: 12px; color: var(--text-muted); font-weight: 500; }

  .header-actions { display: flex; align-items: center; gap: 12px; }
  .header-datetime {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-main);
    background: var(--item-bg-subtle);
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    border-radius: 10px;
  }

  .theme-toggle-btn {
    background: var(--item-bg-subtle);
    border: 1px solid var(--border-color);
    padding: 8px 13px;
    border-radius: 10px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 7px;
    outline: none;
    transition: all 0.2s;
  }
  .theme-toggle-btn:hover { border-color: var(--primary); color: var(--primary); }

  .hamburger {
    background: var(--item-bg-subtle);
    border: 1px solid var(--border-color);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    font-size: 17px;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
  }
  .hamburger:hover { background: var(--primary-light); color: var(--primary); }

  /* CONTENT BODY */
  .content-body { padding: 22px 28px; flex: 1; }

  /* METRICS */
  .metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 22px;
  }

  .metric-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .metric-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

  .metric-icon-box {
    width: 62px;
    height: 62px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    flex-shrink: 0;
  }
  .icon-red { background: #fef2f2; color: #ef4444; border: 1px solid #fee2e2; }
  .icon-blue { background: #eff6ff; color: #2563eb; border: 1px solid #dbeafe; }
  .icon-purple { background: #faf5ff; color: #9333ea; border: 1px solid #f3e8ff; }
  .icon-yellow { background: #fffbeb; color: #d97706; border: 1px solid #fef3c7; }

  [data-theme="dark"] .icon-red { background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.3); }
  [data-theme="dark"] .icon-blue { background: rgba(59, 130, 246, 0.15); border-color: rgba(59, 130, 246, 0.3); }
  [data-theme="dark"] .icon-purple { background: rgba(168, 85, 247, 0.15); border-color: rgba(168, 85, 247, 0.3); }
  [data-theme="dark"] .icon-yellow { background: rgba(245, 158, 11, 0.15); border-color: rgba(245, 158, 11, 0.3); }

  .metric-content { flex: 1; min-width: 0; }
  .metric-label { font-size: 11.5px; font-weight: 750; color: var(--text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.03em; }
  
  .metric-value-jumbo {
    font-size: 30px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.1;
    margin-bottom: 6px;
    display: flex;
    align-items: baseline;
    gap: 4px;
  }
  .metric-value-jumbo span.unit { font-size: 16px; font-weight: 600; color: var(--text-muted); }

  .metric-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
  .badge-norm { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
  .badge-warn { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
  .badge-crit { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }
  .metric-subtext { font-size: 11px; color: var(--text-muted); margin-top: 5px; font-weight: 600; }

  .status-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--success); margin-right: 5px; }
  .status-dot.red { background: var(--danger); }

  /* MIDDLE GRID */
  .middle-grid {
    display: grid;
    grid-template-columns: 2.8fr 1fr;
    gap: 18px;
    margin-bottom: 22px;
  }

  .ui-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
  }

  .ui-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .ui-card-title { font-size: 15px; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 8px; }

  .chart-filter-group {
    display: inline-flex;
    background: var(--filter-bg);
    padding: 3px;
    border-radius: 9px;
    gap: 2px;
    border: 1px solid var(--border-color);
  }
  .filter-pill-btn {
    border: none;
    outline: none;
    background: transparent;
    padding: 6px 12px;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-muted);
    border-radius: 7px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
  }
  .filter-pill-btn:hover { color: var(--primary); }
  .filter-pill-btn.active {
    background: var(--card-bg);
    color: var(--primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  }
  .pulse-live-icon {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #ef4444;
    display: inline-block;
    animation: livePulse 1.4s infinite;
  }
  @keyframes livePulse {
    0% { transform: scale(0.9); opacity: 0.9; box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    70% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 0 5px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.9); opacity: 0.9; }
  }

  /* ACTUATOR LIST */
  .actuator-list { display: flex; flex-direction: column; gap: 10px; }
  .actuator-item-large {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: var(--item-bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    gap: 8px;
  }
  .actuator-left { display: flex; align-items: center; gap: 12px; }
  .act-icon-large {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    flex-shrink: 0;
  }
  .act-name-large { font-size: 13px; font-weight: 800; color: var(--text-main); margin-bottom: 1px; }
  .act-mode-large { font-size: 10.5px; color: var(--text-muted); font-weight: 600; }
  
  .act-state-large {
    font-size: 11px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 7px;
    flex-shrink: 0;
  }
  .state-on { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
  .state-off { background: var(--border-color); color: var(--text-muted); border: 1px solid var(--border-color); }
  [data-theme="dark"] .state-on { background: rgba(16, 185, 129, 0.2); color: #34d399; border-color: rgba(16, 185, 129, 0.4); }

  /* HEADING LATENCY DATA */
  .latency-header-wrap {
    margin-top: 16px;
    margin-bottom: 8px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    font-weight: 800;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }

  .latency-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .latency-item { background: var(--item-bg-subtle); padding: 9px 11px; border-radius: 10px; border: 1px solid var(--border-color); }
  .lat-label { font-size: 10px; color: var(--text-muted); font-weight: 700; margin-bottom: 2px; }
  .lat-val { font-size: 13.5px; font-weight: 800; color: var(--text-main); }

  /* BOTTOM GRID */
  .bottom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 18px;
    margin-bottom: 22px;
  }

  .mini-table { width: 100%; border-collapse: collapse; font-size: 12px; }
  .mini-table th { text-align: left; padding: 9px 6px; color: var(--text-muted); font-weight: 700; border-bottom: 1px solid var(--border-color); }
  .mini-table td { padding: 9px 6px; border-bottom: 1px solid var(--table-border); color: var(--text-main); }

  .table-responsive {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    -webkit-overflow-scrolling: touch;
  }
  .full-history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
    min-width: 850px;
  }
  .full-history-table th {
    background: var(--table-header-bg);
    padding: 12px 10px;
    text-align: left;
    font-weight: 700;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border-color);
  }
  .full-history-table td {
    padding: 11px 10px;
    border-bottom: 1px solid var(--table-border);
    vertical-align: middle;
    color: var(--text-main);
  }

  .alert-feed { display: flex; flex-direction: column; gap: 8px; }
  .alert-box-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 11px;
    background: var(--item-bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 11.5px;
    color: var(--text-main);
  }
  .alert-box-item.warn { background: var(--warning-bg); border-color: rgba(245, 158, 11, 0.3); }

  .ai-status-pill { background: #f3e8ff; color: #9333ea; font-size: 10.5px; font-weight: 800; padding: 3px 8px; border-radius: 6px; border: 1px solid rgba(147, 51, 234, 0.25); }
  [data-theme="dark"] .ai-status-pill { background: rgba(168, 85, 247, 0.15); color: #c084fc; border-color: rgba(192, 132, 252, 0.3); }
  
  .ai-item-block { margin-bottom: 10px; padding: 11px 12px; background: var(--item-bg-subtle); border-radius: 10px; border: 1px solid var(--border-color); font-size: 11.5px; }
  .ai-item-title { font-weight: 700; color: var(--text-main); margin-bottom: 3px; display: flex; align-items: center; gap: 5px; }

  .content-section { display: none; }
  .content-section.active { display: block; }

  .form-ctrl {
    background: var(--item-bg-subtle);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 7px 10px;
    font-size: 12.5px;
    outline: none;
  }
  .form-ctrl:focus { border-color: var(--primary); }

  .btn-ui { padding: 8px 14px; border-radius: 8px; font-weight: 700; font-size: 12.5px; cursor: pointer; border: none; transition: 0.2s; }
  .btn-primary { background: var(--primary); color: white; }
  .btn-primary:hover { background: var(--primary-hover); }
  .btn-ghost { background: var(--item-bg-subtle); color: var(--text-main); border: 1px solid var(--border-color); }
  .btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

  /* FLOATING BOTTOM NAV BAR KHUSUS HP */
  .mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--header-bg);
    border-top: 1px solid var(--border-color);
    padding: 8px 12px;
    z-index: 950;
    justify-content: space-around;
    align-items: center;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
    backdrop-filter: blur(12px);
  }
  .mobile-nav-btn {
    background: transparent;
    border: none;
    outline: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    position: relative;
    flex: 1;
  }
  .mobile-nav-btn i { font-size: 16px; }
  .mobile-nav-btn.active { color: var(--primary); }
  .mobile-nav-badge {
    position: absolute;
    top: 0;
    right: 18%;
    background: var(--danger);
    color: #fff;
    font-size: 9px;
    padding: 1px 5px;
    border-radius: 10px;
  }

  /* MEDIA QUERIES UNTUK RESPONSIVITAS TINGGI MOBILE & TABLET */
  @media (max-width: 1150px) {
    .middle-grid { grid-template-columns: 1fr; }
  }

  @media (max-width: 900px) {
    .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .bottom-grid { grid-template-columns: 1fr; }
  }

  @media (max-width: 768px) {
    html {
      -webkit-tap-highlight-color: transparent;
      scroll-behavior: smooth;
    }

    body {
      padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    }

    .mobile-bottom-nav {
      display: flex;
      padding: 6px 8px calc(6px + env(safe-area-inset-bottom, 0px)) 8px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }
    
    .sidebar {
      transform: translateX(-100%);
      width: 280px;
    }
    .sidebar.show {
      transform: translateX(0) !important;
    }
    
    .main-wrapper {
      margin-left: 0;
      width: 100%;
    }

    .top-header {
      padding: 10px 14px;
    }
    .page-info h1 {
      font-size: 15px;
      font-weight: 800;
    }
    .page-info p {
      display: none;
    }
    .theme-toggle-btn {
      padding: 6px 9px;
      font-size: 11.5px;
      border-radius: 8px;
    }
    .theme-toggle-btn #headerThemeText {
      display: none;
    }
    .header-datetime {
      padding: 5px 8px;
      font-size: 11px;
      border-radius: 8px;
    }
    .header-datetime span#dateDisplay {
      display: none;
    }

    .content-body {
      padding: 10px 12px;
    }

    .metrics-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 8px;
    }
    .metric-card {
      padding: 10px 12px;
      gap: 8px;
      border-radius: 12px;
      min-width: 0;
    }
    .metric-icon-box {
      width: 36px;
      height: 36px;
      font-size: 15px;
      border-radius: 10px;
      flex-shrink: 0;
    }
    .metric-content {
      min-width: 0;
    }
    .metric-label {
      font-size: 9.5px;
      font-weight: 700;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .metric-value-jumbo {
      font-size: 19px;
      line-height: 1.15;
      margin: 2px 0;
    }
    .metric-value-jumbo span.unit {
      font-size: 11px;
    }
    .metric-badge {
      font-size: 8.5px;
      padding: 2px 6px;
      font-weight: 700;
    }
    .metric-subtext {
      font-size: 8.5px;
      margin-top: 2px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .ui-card {
      padding: 12px 14px;
      border-radius: 12px;
      margin-bottom: 10px;
    }

    .ui-card-header {
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 10px;
      padding-bottom: 8px;
    }
    .ui-card-title {
      font-size: 13.5px;
      font-weight: 800;
    }
    .chart-filter-group {
      width: 100%;
      display: flex;
      gap: 4px;
    }
    .filter-pill-btn {
      flex: 1;
      justify-content: center;
      padding: 6px 4px;
      font-size: 10.5px;
      border-radius: 8px;
      white-space: nowrap;
    }

    #mainChartCombined {
      height: 240px !important;
    }

    .actuator-list {
      gap: 8px;
    }
    .actuator-item-large {
      padding: 8px 10px;
      border-radius: 10px;
    }
    .act-icon-large {
      width: 32px;
      height: 32px;
      font-size: 14px;
    }
    .act-name-large {
      font-size: 12.5px;
      font-weight: 700;
    }
    .act-mode-large {
      font-size: 9.5px;
    }
    .act-state-large {
      padding: 3px 8px;
      font-size: 10.5px;
      border-radius: 6px;
    }

    .alert-box-item {
      padding: 8px 10px;
      gap: 8px;
      font-size: 11.5px;
      border-radius: 10px;
    }

    .table-responsive {
      -webkit-overflow-scrolling: touch;
      overflow-x: auto;
      border-radius: 10px;
      margin-top: 6px;
    }
    .full-history-table th, .full-history-table td {
      padding: 7px 8px;
      font-size: 11px;
      white-space: nowrap;
    }

    #sec-chat-ai .ui-card {
      height: calc(100dvh - 135px) !important;
      min-height: 360px !important;
      border-radius: 12px;
    }
    #chatMessages {
      padding: 12px;
      gap: 10px;
    }
    #chatMessages > div {
      max-width: 92% !important;
    }
  }

  @media (max-width: 360px) {
    .metrics-grid {
      grid-template-columns: 1fr;
      gap: 8px;
    }
  }