.modal-backdrop {
        position: fixed;
        inset: 0;
        display: none;
        place-items: center;
        padding: 32px;
        background: rgba(0, 0, 0, 0.7);
        backdrop-filter: blur(8px);
      }

      .modal-backdrop.open {
        display: grid;
      }

      .modal {
        width: min(840px, 100%);
        max-height: min(800px, calc(100vh - 64px));
        overflow: auto;
        border: 1px solid var(--admin-line);
        border-radius: 14px;
        background: #111111;
        box-shadow: 0 24px 80px rgba(0, 0, 0, 0.56);
        color: var(--admin-text);
      }

      .modal-header,
      .modal-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        padding: 18px 22px;
        border-bottom: 1px solid var(--admin-line);
      }

      .modal-header h2 {
        margin: 0;
        color: var(--admin-text);
        font-size: 18px;
        font-weight: 650;
        letter-spacing: -0.03em;
      }

      .modal-footer {
        border-top: 1px solid var(--admin-line);
        border-bottom: 0;
        background: var(--admin-surface-soft);
      }

      .modal-body {
        display: grid;
        gap: 20px;
        padding: 22px;
      }

      .admin-form-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
      }

      .form-section {
        display: grid;
        grid-column: 1 / -1;
        gap: 18px;
        border: 1px solid var(--admin-line);
        border-radius: 14px;
        padding: 18px;
        background: rgba(255, 255, 255, 0.015);
      }

      .form-section-header {
        display: grid;
        gap: 4px;
      }

      .form-section-header h3 {
        margin: 0;
        color: var(--admin-text);
        font-size: 14px;
        font-weight: 650;
        letter-spacing: -0.02em;
      }

      .form-section-header p {
        margin: 0;
        color: var(--admin-muted);
        font-size: 12px;
        line-height: 1.45;
      }

      .form-section-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
      }

      .admin-field {
        display: grid;
        gap: 10px;
      }

      .admin-field.full {
        grid-column: 1 / -1;
      }

      .admin-field span {
        color: var(--admin-muted);
        font-size: 12px;
        font-weight: 500;
      }

      .admin-field input,
      .admin-field select,
      .admin-field textarea {
        width: 100%;
        border: 1px solid var(--admin-line);
        border-radius: 9px;
        background: #0c0c0c;
        color: var(--admin-text);
        font: inherit;
        padding: 12px 13px;
        box-shadow: none;
        outline: none;
        transition: border-color 120ms ease, box-shadow 120ms ease, background 120ms ease;
      }

      .admin-field select option {
        color: #18181b;
      }

      .admin-field input:focus,
      .admin-field select:focus,
      .admin-field textarea:focus {
        border-color: var(--admin-line-strong);
        background: #0f0f0f;
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.06);
      }

      .admin-field textarea {
        min-height: 160px;
        resize: vertical;
      }

      .member-access-form {
        display: grid;
        grid-template-columns: minmax(180px, 1fr) 140px 140px auto;
        align-items: end;
        gap: 14px;
        padding: 18px;
      }

      .generated-invite {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        margin: 14px 0 22px;
        padding: 16px 18px;
        border: 1px solid var(--admin-line-strong);
        border-radius: 12px;
        background: var(--admin-panel);
      }

      .generated-invite[hidden] {
        display: none;
      }

      .generated-invite strong {
        display: block;
        margin-top: 5px;
        color: var(--admin-text);
        font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        font-size: 16px;
        letter-spacing: 0.04em;
      }

      .access-section-title {
        margin: 24px 0 10px;
        color: var(--admin-text);
        font-size: 14px;
      }

      #scenario-agent-fixed-positive-prompt,
      #scenario-agent-fixed-negative-prompt {
        min-height: 120px;
      }

      #scenario-agent-system-prompt {
        min-height: 220px;
      }

      @media (max-width: 860px) {
        .admin-shell {
          grid-template-columns: 1fr;
        }

        .admin-sidebar {
          position: static;
          border-right: 0;
          height: auto;
          border-bottom: 1px solid var(--admin-line);
        }

        .admin-sidebar::after {
          display: none;
        }

        .admin-main {
          padding: 20px;
        }

        .admin-topbar {
          position: static;
          align-items: flex-start;
          flex-direction: column;
        }

        .admin-overview {
          display: grid;
        }

        .admin-topbar,
        .page-header {
          border-radius: 14px;
        }

        .page-header {
          flex-direction: column;
        }

        .toolbar,
        .toolbar select,
        .toolbar button {
          width: 100%;
        }

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

        .member-access-form {
          grid-template-columns: 1fr;
        }

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