:root {
      --win-bg: #eef3f9;
      --win-panel: #ffffff;
      --win-panel-soft: #f7f9fc;
      --win-border: #d8e2ef;
      --win-border-strong: #c4d3e5;
      --win-text: #1f2a37;
      --win-text-soft: #5f6f82;
      --win-blue: #2b7cd3;
      --win-blue-soft: #e8f2ff;
      --win-yellow: #ffcf5a;
      --win-red: #ef5350;
      --win-shadow: 0 12px 30px rgba(36, 74, 124, 0.10);
      --win-shadow-soft: 0 6px 18px rgba(36, 74, 124, 0.08);
      --sidebar-width: 280px;
      --radius-lg: 18px;
      --radius-md: 14px;
      --radius-sm: 10px;

      --line: var(--win-border);
      --surface: var(--win-panel);
      --surface-2: var(--win-panel-soft);
      --ink: var(--win-text);
      --ink-dim: var(--win-text-soft);
      --brand-600: var(--win-blue);
    }

    * { box-sizing: border-box; }

    html, body {
      margin: 0;
      padding: 0;
      min-height: 100%;
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
      background:
        radial-gradient(circle at top right, rgba(98, 167, 255, 0.16), transparent 26%),
        linear-gradient(180deg, #f5f8fc 0%, var(--win-bg) 100%);
      color: var(--win-text);
    }

    body {
      display: flex;
      min-height: 100vh;
    }

    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: var(--sidebar-width);
      height: 100vh;
      background: linear-gradient(180deg, #fbfdff 0%, #f4f7fb 100%);
      border-right: 1px solid var(--win-border);
      padding: 12px;
      overflow-y: auto;
      z-index: 50;
    }

    .sidebar-shell {
      min-height: calc(100vh - 24px);
      border: 1px solid rgba(255,255,255,0.75);
      border-radius: 24px;
      background: rgba(255,255,255,0.60);
      backdrop-filter: blur(10px);
      box-shadow: var(--win-shadow);
      padding: 16px 14px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .brand { display: flex; justify-content: center; align-items: center; }
    .brand-logo { width: 20vw; max-width: 100px; height: auto; }

    .nav-group-title {
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.10em;
      color: #1e3a8a;
      padding: 12px 8px 8px;
      text-transform: uppercase;
    }

    .nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .nav-link, .nav-toggle {
      width: 100%;
      border: 0;
      background: transparent;
      color: var(--win-text);
      border-radius: 12px;
      min-height: 44px;
      padding: 10px 12px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      text-decoration: none;
      font-size: 0.97rem;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
    }

    .nav-link:hover, .nav-toggle:hover, .submenu a:hover {
      background: #eef4fb;
    }

    .nav-link.active, .nav-toggle.active, .nav-item.open > .nav-toggle {
      background: #ffffff;
      box-shadow: var(--win-shadow-soft);
      border: 1px solid rgba(205, 220, 238, 0.7);
    }

    .nav-link-left, .nav-toggle-left, .submenu a {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-link svg, .nav-toggle svg, .submenu a svg,
    .quick-action svg, .metric-icon svg {
      width: 18px;
      height: 18px;
      color: #5f6f82;
      flex: 0 0 18px;
    }

    .chevron {
      width: 16px !important;
      height: 16px !important;
      color: #8ea0b5 !important;
      transition: transform 0.18s ease;
    }

    .nav-item.open .chevron { transform: rotate(180deg); }

    .submenu {
      display: none;
      margin: 6px 0 4px 34px;
      padding: 0;
      border-left: 1px solid #dde7f2;
    }

    .nav-item.open .submenu { display: block; }

    .submenu a {
      color: #445366;
      text-decoration: none;
      border-radius: 10px;
      padding: 10px 12px;
      margin: 2px 0 2px 10px;
      font-size: 0.95rem;
      font-weight: 500;
    }

    .submenu a.active-sub {
      background: #eef3f8;
      font-weight: 600;
    }

    .main {
      margin-left: var(--sidebar-width);
      width: calc(100% - var(--sidebar-width));
      min-height: 100vh;
      padding: 28px;
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 24px;
    }

    .topbar-left h1 {
      margin: 0 0 6px;
      font-size: clamp(1.7rem, 2.6vw, 2.4rem);
      letter-spacing: -0.03em;
    }

    .topbar-left p {
      margin: 0;
      color: var(--win-text-soft);
      font-size: 0.98rem;
    }

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

    .quick-action {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 11px 14px;
      border-radius: 14px;
      border: 1px solid var(--win-border);
      background: rgba(255,255,255,0.82);
      color: var(--win-text);
      text-decoration: none;
      font-weight: 600;
      box-shadow: var(--win-shadow-soft);
    }

    .quick-action.primary {
      background: linear-gradient(180deg, #3f94f4 0%, #2b7cd3 100%);
      color: #fff;
      border-color: transparent;
    }

    .quick-action.primary svg { color: #fff; }

    .form-section, .panel {
      background: rgba(255,255,255,0.80);
      border: 1px solid rgba(216, 226, 239, 0.9);
      border-radius: var(--radius-lg);
      box-shadow: var(--win-shadow);
      backdrop-filter: blur(8px);
    }

    .form-section { padding: 24px; }

    .controls {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: end;
      margin: 10px 0 14px;
    }

    .controls .field {
      display: flex;
      flex-direction: column;
      gap: 6px;
      min-width: 160px;
    }

    .right-actions {
      margin-left: auto;
      display: flex;
      gap: 8px;
      align-items: center;
      flex-wrap: wrap;
    }

    .summary-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
      gap: 12px;
      margin: 10px 0 18px;
    }

    .kpi {
      border: 1px solid var(--line, #d8e2ef);
      border-radius: 12px;
      padding: 12px;
      background: var(--surface-2, #f7f9fc);
    }

    .kpi h4 {
      font-size: .9rem;
      color: var(--ink-dim, #5f6f82);
      margin: 0 0 6px;
    }

    .kpi .big {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--brand-600, #2b7cd3);
    }

    .kpi .sub {
      font-size: .85rem;
      color: var(--ink-dim, #5f6f82);
      margin-top: 6px;
    }

    .panel {
      border: 1px solid var(--line, #d8e2ef);
      border-radius: 12px;
      background: var(--surface, #fff);
      overflow: hidden;
      margin-top: 12px;
	  padding:20px;
    }

    .panel .hd {
      padding: 10px 12px;
      border-bottom: 1px solid var(--line, #d8e2ef);
      color: var(--ink, #1f2a37);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
    }

    .panel .bd { padding: 12px; }

    .table-wrapper {
      overflow: auto;
      border: 1px solid var(--line, #d8e2ef);
      border-radius: 12px;
      background: var(--surface, #fff);
    }

    table { width: 100%; border-collapse: collapse; }

    thead th {
      text-align: left;
      font-size: .85rem;
      color: var(--ink-dim, #5f6f82);
      padding: 10px 12px;
      border-bottom: 1px solid var(--line, #d8e2ef);
      white-space: nowrap;
    }

    tbody td {
      padding: 10px 12px;
      border-bottom: 1px solid var(--line, #d8e2ef);
      vertical-align: top;
    }

    tbody tr:hover { background: rgba(255,255,255,0.03); }
    td.num, th.num { text-align: right; }
    .muted { color: var(--ink-dim, #5f6f82); }

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: .82rem;
      border: 1px solid var(--line, #d8e2ef);
      background: var(--surface-2, #f7f9fc);
      white-space: nowrap;
    }

    details.debug { margin-top: 12px; }
    details.debug summary { cursor: pointer; color: var(--ink-dim, #5f6f82); }

    pre.debug {
      margin: 10px 0 0;
      padding: 10px;
      border: 1px solid var(--line, #d8e2ef);
      border-radius: 12px;
      background: var(--surface-2, #f7f9fc);
      overflow: auto;
      font-size: 12px;
      color: var(--ink, #1f2a37);
    }

    .print-only { display: none; }

    @media print {
      #navbar-container,
      .controls,
      #exportCsvBtn,
      #printBtn,
      #resetBtn,
      details.debug,
      .topbar-actions,
      #appSidebar {
        display: none !important;
      }

      body {
        background: #fff !important;
        display: block;
      }

      .main {
        margin-left: 0 !important;
        width: 100% !important;
        padding: 0 !important;
      }

      .form-section {
        box-shadow: none !important;
        border: none !important;
        padding: 0 !important;
      }

      #printHeader.print-only { display: block !important; margin-bottom: 12px; }
      #printHeader h1 { margin: 0 0 6px 0; font-size: 20px; }
      #printHeader .meta { font-size: 12px; opacity: .85; }
      .panel, .table-wrapper { border: none !important; box-shadow: none !important; }
      thead { display: table-header-group; }
      tr { page-break-inside: avoid; }
    }

    @media (max-width: 940px) {
      body { display: block; }
      .sidebar { position: relative; width: 100%; height: auto; }
      .main {
        margin-left: 0;
        width: 100%;
        padding: 20px;
      }
      .topbar { flex-direction: column; align-items: flex-start; }
      .form-section { padding: 18px; }
    }