:root {
      color-scheme: light;
      --bg: #f6f7f9;
      --surface: #ffffff;
      --surface-2: #eef3f5;
      --line: #d7dee4;
      --text: #18212a;
      --muted: #60707e;
      --primary: #0b6b5f;
      --primary-dark: #084f47;
      --danger: #b42318;
      --warning: #a15c07;
      --ok: #176b34;
      --focus: #2f80ed;
      --shadow: 0 12px 32px rgba(22, 34, 45, 0.08);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
    }

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    button {
      min-height: 38px;
      border: 1px solid transparent;
      border-radius: 6px;
      background: var(--primary);
      color: #fff;
      padding: 0 14px;
      cursor: pointer;
      white-space: nowrap;
    }

    button:hover {
      background: var(--primary-dark);
    }

    button:disabled {
      opacity: 0.55;
      cursor: not-allowed;
    }

    button.secondary {
      background: #fff;
      color: var(--text);
      border-color: var(--line);
    }

    button.secondary:hover {
      background: var(--surface-2);
    }

    button.danger {
      background: var(--danger);
    }

    button.danger:hover {
      background: #8d1b13;
    }

    input,
    select,
    textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--text);
      padding: 10px 11px;
      outline: none;
    }

    textarea {
      resize: vertical;
      min-height: 76px;
    }

    input:focus,
    select:focus,
    textarea:focus,
    button:focus-visible {
      border-color: var(--focus);
      box-shadow: 0 0 0 3px rgba(47, 128, 237, 0.16);
    }

    label {
      display: grid;
      gap: 6px;
      color: var(--muted);
      font-size: 0.86rem;
      font-weight: 600;
    }

    .shell {
      display: none;
      min-height: 100vh;
    }

    .shell.active {
      display: grid;
      grid-template-rows: auto 1fr;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 10;
      background: #fff;
      border-bottom: 1px solid var(--line);
    }

    .topbar-inner {
      max-width: 1480px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 14px 20px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      background: var(--primary);
      color: #fff;
      display: grid;
      place-items: center;
      font-weight: 800;
      letter-spacing: 0;
    }

    .brand h1 {
      margin: 0;
      font-size: 1.05rem;
      line-height: 1.2;
    }

    .brand p {
      margin: 2px 0 0;
      color: var(--muted);
      font-size: 0.84rem;
    }

    .account {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 10px;
      min-width: 0;
    }

    .account span {
      color: var(--muted);
      font-size: 0.86rem;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      max-width: 280px;
    }

    .layout {
      max-width: 1480px;
      width: 100%;
      margin: 0 auto;
      padding: 18px 20px 28px;
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 18px;
    }

    .sidebar {
      align-self: start;
      position: sticky;
      top: 76px;
      display: grid;
      gap: 8px;
    }

    .nav-button {
      width: 100%;
      background: transparent;
      color: var(--text);
      border-color: transparent;
      text-align: left;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 12px;
    }

    .nav-button:hover,
    .nav-button.active {
      background: #e7f3f0;
      color: var(--primary-dark);
      border-color: #c7e2db;
    }

    .badge {
      min-width: 26px;
      border-radius: 999px;
      padding: 2px 7px;
      background: var(--surface-2);
      color: var(--muted);
      text-align: center;
      font-size: 0.76rem;
    }

    .content {
      display: grid;
      gap: 18px;
      min-width: 0;
    }

    .toolbar,
    .panel {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .toolbar {
      padding: 12px;
      display: grid;
      grid-template-columns: minmax(180px, 1fr) auto auto;
      gap: 10px;
      align-items: center;
    }

    .panel {
      padding: 16px;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: flex-start;
      margin-bottom: 14px;
    }

    .section-head h2 {
      margin: 0;
      font-size: 1rem;
    }

    .section-head p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 0.88rem;
    }

    .grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 12px;
    }

    .span-2 { grid-column: span 2; }
    .span-3 { grid-column: span 3; }
    .span-4 { grid-column: span 4; }
    .span-5 { grid-column: span 5; }
    .span-6 { grid-column: span 6; }
    .span-8 { grid-column: span 8; }
    .span-12 { grid-column: span 12; }

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

    .table-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      min-width: 760px;
    }

    th,
    td {
      padding: 10px 12px;
      border-bottom: 1px solid var(--line);
      text-align: left;
      vertical-align: top;
      font-size: 0.9rem;
    }

    th {
      background: #f0f4f6;
      color: var(--muted);
      font-size: 0.78rem;
      text-transform: uppercase;
      letter-spacing: 0;
    }

    tr:last-child td {
      border-bottom: 0;
    }

    .status {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      border-radius: 999px;
      padding: 2px 9px;
      font-size: 0.76rem;
      font-weight: 800;
      background: var(--surface-2);
      color: var(--muted);
    }

    .status.ok {
      background: #dff3e5;
      color: var(--ok);
    }

    .status.warn {
      background: #fff2d6;
      color: var(--warning);
    }

    .status.danger {
      background: #fde4e1;
      color: var(--danger);
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .metric {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 14px;
      box-shadow: var(--shadow);
    }

    .metric span {
      display: block;
      color: var(--muted);
      font-size: 0.78rem;
      text-transform: uppercase;
      font-weight: 800;
      letter-spacing: 0;
    }

    .metric strong {
      display: block;
      margin-top: 8px;
      font-size: 1.7rem;
      line-height: 1;
    }

    .login-page {
      min-height: 100vh;
      display: grid;
      place-items: center;
      padding: 22px;
      background:
        linear-gradient(135deg, rgba(11, 107, 95, 0.10), transparent 44%),
        linear-gradient(315deg, rgba(196, 91, 38, 0.12), transparent 38%),
        var(--bg);
    }

    .login-panel {
      width: min(100%, 420px);
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: var(--shadow);
      padding: 22px;
    }

    .login-panel h1 {
      margin: 0 0 6px;
      font-size: 1.35rem;
    }

    .login-panel p {
      margin: 0 0 18px;
      color: var(--muted);
    }

    .login-form {
      display: grid;
      gap: 12px;
    }

    .alert {
      display: none;
      border-radius: 8px;
      border: 1px solid #fac7c1;
      background: #fff1ef;
      color: var(--danger);
      padding: 10px 12px;
      font-size: 0.9rem;
    }

    .alert.active {
      display: block;
    }

    .toast {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 20;
      max-width: min(420px, calc(100vw - 36px));
      border-radius: 8px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--text);
      box-shadow: var(--shadow);
      padding: 12px 14px;
      display: none;
    }

    .toast.active {
      display: block;
    }

    .empty {
      color: var(--muted);
      padding: 18px;
      text-align: center;
    }

    .hidden {
      display: none !important;
    }

    @media (max-width: 980px) {
      .layout {
        grid-template-columns: 1fr;
      }

      .sidebar {
        position: static;
        grid-template-columns: repeat(4, minmax(0, 1fr));
      }

      .nav-button {
        justify-content: center;
        text-align: center;
        gap: 8px;
      }

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

      .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 720px) {
      .topbar-inner {
        grid-template-columns: 1fr;
      }

      .account {
        justify-content: flex-start;
      }

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

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

      .span-2,
      .span-3,
      .span-4,
      .span-5,
      .span-6,
      .span-8,
      .span-12 {
        grid-column: span 1;
      }

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