:root {
    --bg: #0b0f19;
    --card: #131a2b;
    --border: #232b3d;
    --text: #e6e9f0;
    --muted: #8b93a7;
    --accent: #4f8dfd;
    --accent2: #34d399;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
  }
  .layout { display: flex; align-items: flex-start; }
  .sidebar {
    width: 230px;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 24px 12px;
    border-right: 1px solid var(--border);
  }
  .sidebar-title { padding: 0 12px 20px; }
  .brand-logo { height: 28px; width: auto; display: block; }
  .nav-link {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 2px;
  }
  .nav-link:hover { background: var(--card); color: var(--text); }
  .nav-link.active { background: var(--card); color: var(--accent); font-weight: 600; }
  .content { flex: 1; min-width: 0; padding: 24px; max-width: 100%; overflow-x: hidden; }
  .mobile-topbar { display: none; }
  .menu-toggle {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(2px);
    z-index: 95;
  }
  .sidebar-backdrop.show { display: block; }
  @media (max-width: 900px) {
    body { overflow-x: hidden; }
    .layout { flex-direction: column; max-width: 100vw; }
    .mobile-topbar {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      background: var(--bg);
      z-index: 80;
    }
    .mobile-topbar .brand-logo { height: 22px; }
    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 260px;
      max-width: 80vw;
      height: 100vh;
      display: flex;
      flex-direction: column;
      overflow-y: auto;
      overflow-x: hidden;
      border-right: 1px solid var(--border);
      border-bottom: none;
      padding: 20px 12px;
      transform: translateX(-100%);
      transition: transform 0.25s ease;
      z-index: 100;
    }
    .sidebar.open { transform: translateX(0); box-shadow: 8px 0 24px rgba(0, 0, 0, 0.4); }
    .sidebar-title { display: block; }
    .nav-link { white-space: normal; }
    .content { padding: 16px; }
  }
  .overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
  }
  @media (max-width: 640px) {
    .overview-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  }
  @media (max-width: 420px) {
    .overview-grid { grid-template-columns: 1fr; }
  }
  .overview-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px;
    text-decoration: none;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.15s;
  }
  .overview-card:hover { border-color: var(--accent); }
  .overview-card .label-row { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
  .overview-card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
  .overview-card .value { font-size: 22px; font-weight: 700; }
  .overview-card .sub { color: var(--muted); font-size: 12px; margin-top: 4px; }
  header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
  }
  header > div { min-width: 0; }
  h1 { font-size: 20px; margin: 0; overflow-wrap: break-word; }
  .subtitle { color: var(--muted); font-size: 13px; }
  .kpis {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
  }
  @media (max-width: 640px) {
    .kpis { grid-template-columns: 1fr 1fr; gap: 8px; }
  }
  @media (max-width: 420px) {
    .kpis { grid-template-columns: 1fr; }
    h1 { font-size: 18px; }
  }
  .kpi {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    min-width: 0;
  }
  .kpi .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
  .kpi .value { font-size: 24px; font-weight: 600; margin-top: 4px; }
  .grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
  }
  @media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }
  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    min-width: 0;
  }
  .card h2 { font-size: 14px; margin: 0 0 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
  details.collapsible summary { list-style: none; cursor: pointer; }
  details.collapsible summary::-webkit-details-marker { display: none; }
  .collapsible-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }
  .collapsible-summary::after {
    content: '▸';
    color: var(--muted);
    font-size: 13px;
    transition: transform 0.15s;
    flex-shrink: 0;
  }
  details.collapsible[open] .collapsible-summary::after { transform: rotate(90deg); }
  details.collapsible[open] .collapsible-summary { margin-bottom: 4px; }
  table { width: 100%; border-collapse: collapse; font-size: 13px; }
  th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
  th { color: var(--muted); font-weight: 500; }
  td.num, th.num { text-align: right; }
  @media (max-width: 640px) {
    .card { overflow-x: auto; -webkit-overflow-scrolling: touch; padding: 14px; }
    table { min-width: 480px; }
  }
  @media (max-width: 420px) {
    .kpi, .overview-card, .card { padding: 12px; }
    .kpi .value, .overview-card .value { font-size: 19px; }
  }
  .period-pills { display: flex; gap: 8px; flex-wrap: wrap; }
  .pill {
    background: var(--card);
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 13px;
    cursor: pointer;
    white-space: nowrap;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
  }
  .pill:hover { border-color: var(--accent); color: var(--text); }
  .pill.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
  @keyframes pulseGlow { 0%, 100% { opacity: 0.5; transform: scale(0.9); } 50% { opacity: 1; transform: scale(1.1); } }
  .iabadge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: #9ec1ff;
    background: rgba(79, 141, 253, 0.12);
    border: 1px solid rgba(79, 141, 253, 0.35);
    padding: 4px 11px;
    border-radius: 20px;
    white-space: nowrap;
  }
  .iabadge .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #7aa8ff;
    box-shadow: 0 0 10px 1px #7aa8ff;
    animation: pulseGlow 1.8s ease-in-out infinite;
  }
  .loading { color: var(--muted); padding: 40px; text-align: center; }
  .login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: radial-gradient(circle at 50% 0%, #16203a 0%, var(--bg) 60%);
  }
  .login-card {
    width: 100%;
    max-width: 340px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  }
  .login-logo { height: 34px; width: auto; margin-bottom: 20px; }
  .login-title { font-size: 18px; margin: 0 0 24px; color: var(--text); font-weight: 700; text-align: center; }
  .login-label { align-self: flex-start; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; margin-top: 14px; }
  .login-input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 14px;
  }
  .login-input:focus { outline: none; border-color: var(--accent); }
  .login-error { color: #ef4444; font-size: 13px; margin-top: 14px; min-height: 16px; text-align: center; }
  .login-submit {
    width: 100%;
    margin-top: 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 11px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
  }
  .login-submit:hover { opacity: 0.9; }
  .login-submit:disabled { opacity: 0.6; cursor: default; }
  .section-title { font-size: 16px; margin: 32px 0 12px; color: var(--text); border-top: 1px solid var(--border); padding-top: 24px; }
  .kpi .value.warn { color: #f59e0b; }
  .kpi .value.ok { color: var(--accent2); }
  .kpi.pending { border-style: dashed; opacity: 0.75; }
  .kpi .value.pending-value { color: var(--muted); font-style: italic; font-size: 16px; font-weight: 500; }
  .kpi .label-row { display: flex; align-items: center; gap: 6px; }
  .info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid var(--muted);
    color: var(--muted);
    font-size: 10px;
    line-height: 1;
    cursor: help;
    position: relative;
    flex-shrink: 0;
  }
  .info-icon .tooltip-box {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: calc(100% + 9px);
    left: 0;
    width: 240px;
    background: #1c2438;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 12px;
    line-height: 1.45;
    color: var(--text);
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
    z-index: 30;
    box-shadow: 0 8px 24px rgba(0,0,0,0.45);
    transition: opacity 0.12s ease;
    pointer-events: none;
  }
  .info-icon:hover .tooltip-box,
  .info-icon:focus .tooltip-box,
  .info-icon.show .tooltip-box {
    visibility: visible;
    opacity: 1;
  }
  @media (max-width: 480px) {
    .info-icon .tooltip-box { width: 66vw; max-width: 220px; }
  }