import { For, Show, createMemo, createSignal, onMount } from 'solid-js';
import AdminShell from '~/components/AdminShell';
import type { CrudRecord } from '~/lib/admin/types';

const API = '/api/gateway';

type RoleRecord = CrudRecord & {
  key?: string;
  department?: string;
  departmentId?: string;
  description?: string;
  usersAssigned?: number;
  permissionsCount?: number;
  canApproveRequests?: boolean;
  canManageSystemSettings?: boolean;
  createdDate?: string;
};

type DepartmentOption = { id: string; name: string };

// Permission matrix: each module maps to CRUD permission keys
const MODULE_PERMISSIONS = [
  { module: 'Employee Management',     prefix: 'EMPLOYEES' },
  { module: 'Department Management',   prefix: 'DEPARTMENTS' },
  { module: 'Designation Management',  prefix: 'DESIGNATIONS' },
  { module: 'Role Management',         prefix: 'ROLES' },
  { module: 'Verification Management', prefix: 'VERIFICATIONS' },
  { module: 'Approval Management',     prefix: 'APPROVALS' },
  { module: 'Users Management',        prefix: 'USERS' },
  { module: 'Company Management',      prefix: 'COMPANIES' },
];
const ACTIONS = ['VIEW', 'CREATE', 'UPDATE', 'DELETE'] as const;

function permKey(prefix: string, action: string) {
  return `${prefix}_${action}`;
}

function normalizeRole(item: any, idx: number): RoleRecord {
  return {
    id: String(item.id ?? `role-${idx + 1}`),
    name: String(item.name ?? ''),
    key: item.key ? String(item.key) : undefined,
    department: item.department_name ? String(item.department_name) : undefined,
    departmentId: item.department_id ? String(item.department_id) : undefined,
    description: item.description ? String(item.description) : undefined,
    usersAssigned: Number(item.users_assigned ?? 0),
    permissionsCount: Number(item.permissions_count ?? 0),
    canApproveRequests: Boolean(item.can_approve_requests ?? false),
    canManageSystemSettings: Boolean(item.can_manage_system_settings ?? false),
    status: item.is_active === false ? 'INACTIVE' : 'ACTIVE',
    updatedAt: String(item.updated_at ?? item.created_at ?? ''),
    createdDate: String(item.created_at ?? ''),
  };
}

function StatusBadge(props: { status: string }) {
  const active = () => props.status === 'ACTIVE';
  return (
    <span style={`display:inline-flex;align-items:center;border-radius:9999px;border:1px solid ${active() ? '#FFD8C2' : '#D1D5DB'};background:${active() ? '#FFF1EB' : '#F3F4F6'};color:${active() ? '#FF5E13' : '#4B5563'};padding:2px 10px;font-size:12px;font-weight:500`}>
      <span style={`display:inline-block;width:6px;height:6px;border-radius:50%;background:${active() ? '#FF5E13' : '#9CA3AF'};margin-right:5px;flex-shrink:0`} />
      {active() ? 'Active' : 'Inactive'}
    </span>
  );
}

function FormInput(props: { label: string; required?: boolean; value: string; onInput: (v: string) => void; placeholder?: string }) {
  return (
    <label style="display:block">
      <span style="font-size:13px;font-weight:600;color:#374151">
        {props.label}{props.required && <span style="margin-left:2px;color:#FF5E13">*</span>}
      </span>
      <input
        type="text"
        value={props.value}
        onInput={(e) => props.onInput(e.currentTarget.value)}
        placeholder={props.placeholder}
        style="display:block;margin-top:6px;height:40px;width:100%;border-radius:10px;border:1px solid #E5E7EB;background:white;padding:0 14px;font-size:13px;color:#111827;outline:none;box-sizing:border-box"
      />
    </label>
  );
}

export default function RoleManagementPage() {
  const [view, setView] = createSignal<'list' | 'form' | 'detail'>('list');
  const [listTab, setListTab] = createSignal<'all' | 'create' | 'view'>('all');
  const [formTab, setFormTab] = createSignal<'general' | 'permissions' | 'settings'>('general');
  const [detailTab, setDetailTab] = createSignal<'permissions' | 'users' | 'logs'>('permissions');

  const [search, setSearch] = createSignal('');
  const [rows, setRows] = createSignal<RoleRecord[]>([]);
  const [viewingRole, setViewingRole] = createSignal<RoleRecord | null>(null);
  const [viewingPermissions, setViewingPermissions] = createSignal<string[]>([]);
  const [editingId, setEditingId] = createSignal<string | null>(null);
  const [openMenuId, setOpenMenuId] = createSignal<string | null>(null);
  const [isLoading, setIsLoading] = createSignal(false);
  const [error, setError] = createSignal('');

  // Form state
  const [name, setName] = createSignal('');
  const [roleKey, setRoleKey] = createSignal('');
  const [description, setDescription] = createSignal('');
  const [departmentId, setDepartmentId] = createSignal('');
  const [status, setStatus] = createSignal<'ACTIVE' | 'INACTIVE'>('ACTIVE');
  const [canApproveRequests, setCanApproveRequests] = createSignal(false);
  const [canManageSystemSettings, setCanManageSystemSettings] = createSignal(false);
  const [selectedPermissions, setSelectedPermissions] = createSignal<Set<string>>(new Set());
  const [isSaving, setIsSaving] = createSignal(false);
  const [formError, setFormError] = createSignal('');
  const [departments, setDepartments] = createSignal<DepartmentOption[]>([]);

  const load = async () => {
    setIsLoading(true);
    setError('');
    try {
      const params = new URLSearchParams({ audience: 'INTERNAL', per_page: '100', q: search().trim() });
      const res = await fetch(`${API}/api/admin/roles?${params}`);
      if (!res.ok) throw new Error(`Request failed (${res.status})`);
      const payload = await res.json().catch(() => null);
      const list: any[] = Array.isArray(payload)
        ? payload
        : Array.isArray(payload?.roles)
          ? payload.roles
          : [];
      setRows(list.map(normalizeRole));
    } catch (err: any) {
      setError(err?.message || 'Could not reach roles API.');
      setRows([]);
    } finally {
      setIsLoading(false);
    }
  };

  const loadDepartments = async () => {
    try {
      const res = await fetch(`${API}/api/admin/departments?per_page=100`);
      if (!res.ok) return;
      const payload = await res.json().catch(() => null);
      const list: any[] = Array.isArray(payload?.departments) ? payload.departments : [];
      setDepartments(list.map((d: any) => ({ id: String(d.id), name: String(d.name) })));
    } catch { /* dropdown just empty */ }
  };

  onMount(() => { void load(); void loadDepartments(); });

  const filteredRows = createMemo(() => {
    const q = search().toLowerCase();
    if (!q) return rows();
    return rows().filter(r =>
      r.name.toLowerCase().includes(q) || (r.key || '').toLowerCase().includes(q)
    );
  });

  const togglePermission = (key: string) => {
    setSelectedPermissions(prev => {
      const next = new Set(prev);
      if (next.has(key)) next.delete(key);
      else next.add(key);
      return next;
    });
  };

  const resetForm = () => {
    setEditingId(null); setName(''); setRoleKey(''); setDescription('');
    setDepartmentId(''); setStatus('ACTIVE'); setCanApproveRequests(false);
    setCanManageSystemSettings(false); setSelectedPermissions(new Set());
    setFormTab('general'); setFormError('');
  };

  const openCreate = () => { resetForm(); setView('form'); };

  const openEdit = (row: RoleRecord) => {
    setEditingId(row.id);
    setName(row.name); setRoleKey(row.key || '');
    setDescription(row.description || '');
    setDepartmentId(row.departmentId || '');
    setStatus(row.status === 'INACTIVE' ? 'INACTIVE' : 'ACTIVE');
    setCanApproveRequests(Boolean(row.canApproveRequests));
    setCanManageSystemSettings(Boolean(row.canManageSystemSettings));
    setSelectedPermissions(new Set());
    setFormTab('general'); setView('form'); setOpenMenuId(null);
    // Fetch permission_keys for this role
    fetch(`${API}/api/admin/roles/${row.id}`).then(r => r.json()).then(detail => {
      if (Array.isArray(detail?.permission_keys)) {
        setSelectedPermissions(new Set(detail.permission_keys));
      }
    }).catch(() => {});
  };

  const openDetail = async (row: RoleRecord) => {
    setViewingRole(row); setView('detail'); setListTab('view'); setOpenMenuId(null);
    setViewingPermissions([]);
    try {
      const res = await fetch(`${API}/api/admin/roles/${row.id}`);
      if (res.ok) {
        const detail = await res.json();
        setViewingPermissions(Array.isArray(detail?.permission_keys) ? detail.permission_keys : []);
      }
    } catch { /* ignore */ }
  };

  const save = async () => {
    if (!name().trim() || !roleKey().trim()) {
      setFormError('Role name and role key are required.');
      setFormTab('general');
      return;
    }
    setIsSaving(true);
    setFormError('');
    try {
      const isCreate = !editingId();
      const endpoint = isCreate
        ? `${API}/api/admin/roles`
        : `${API}/api/admin/roles/${editingId()}`;
      const method = isCreate ? 'POST' : 'PATCH';
      const body: Record<string, unknown> = {
        name: name().trim(),
        description: description().trim() || null,
        is_active: status() === 'ACTIVE',
        can_approve_requests: canApproveRequests(),
        can_manage_system_settings: canManageSystemSettings(),
        permission_keys: Array.from(selectedPermissions()),
      };
      if (departmentId().trim()) body.department_id = departmentId().trim();
      if (isCreate) {
        body.key = roleKey().trim();
        body.audience = 'INTERNAL';
      }
      const res = await fetch(endpoint, {
        method,
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(body),
      });
      if (!res.ok) {
        const data = await res.json().catch(() => ({}));
        throw new Error((data as any).message || `Request failed (${res.status})`);
      }
      setView('list');
      resetForm();
      await load();
    } catch (err: any) {
      setFormError(err?.message || 'Failed to save role.');
    } finally {
      setIsSaving(false);
    }
  };

  const deleteRole = async (id: string, roleName: string) => {
    if (!window.confirm(`Delete role "${roleName}"?`)) return;
    setOpenMenuId(null);
    try {
      const res = await fetch(`${API}/api/admin/roles/${id}`, { method: 'DELETE' });
      if (!res.ok) throw new Error(`Request failed (${res.status})`);
      await load();
    } catch (err: any) {
      setError(err?.message || 'Failed to delete role.');
    }
  };

  const toggleStatus = async (row: RoleRecord) => {
    setOpenMenuId(null);
    try {
      const res = await fetch(`${API}/api/admin/roles/${row.id}`, {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ is_active: row.status !== 'ACTIVE' }),
      });
      if (!res.ok) throw new Error(`Request failed (${res.status})`);
      await load();
    } catch (err: any) {
      setError(err?.message || 'Failed to update status.');
    }
  };

  return (
    <AdminShell>
      <div class="w-full space-y-6 pb-8">

        <div style="margin-bottom: 1.5rem">
          <h1 class="text-[28px] font-bold leading-tight text-[#111827]">Internal Role Management</h1>
          <p class="mt-1 text-[14px] text-[#6B7280]">Define and manage organizational access levels with granular permission control</p>
        </div>

        {/* ── LIST VIEW ── */}
        <Show when={view() === 'list'}>
          <div style="margin-top:24px;display:flex;align-items:center;gap:24px;border-bottom:1px solid #E5E7EB">
            {([
              { key: 'all', label: 'All Roles', action: () => { setListTab('all'); void load(); } },
              { key: 'create', label: 'Create Role', action: () => { setListTab('create'); openCreate(); } },
              { key: 'view', label: 'View Role', action: () => setListTab('view') },
            ] as const).map((tab) => (
              <button
                type="button"
                onClick={tab.action}
                style={`padding-bottom:12px;font-size:14px;font-weight:500;background:none;border:none;cursor:pointer;${listTab() === tab.key ? 'color:#FF5E13;border-bottom:2px solid #FF5E13;margin-bottom:-1px' : 'color:#6B7280'}`}
              >
                {tab.label}
              </button>
            ))}
          </div>

          <Show when={error()}>
            <div style="margin-top:16px;border-radius:10px;border:1px solid #FECACA;background:#FEF2F2;padding:12px 16px;font-size:13px;color:#B91C1C">{error()}</div>
          </Show>

          <div style="margin-top:1.5rem;margin-left:-24px;margin-right:-24px;overflow:hidden;border-top:1px solid #E5E7EB;border-bottom:1px solid #E5E7EB;background:white;box-shadow:0 1px 3px rgba(0,0,0,0.06)">
            <div style="display:flex;align-items:center;gap:8px;padding:14px 20px;border-bottom:1px solid #F3F4F6">
              <input
                value={search()}
                onInput={(e) => { setSearch(e.currentTarget.value); void load(); }}
                placeholder="Search roles..."
                style="height:34px;flex:1;border-radius:8px;border:1px solid #E5E7EB;background:white;padding:0 12px;font-size:13px;color:#111827;outline:none"
              />
              <button type="button" style="display:inline-flex;height:34px;align-items:center;gap:6px;border-radius:8px;background:#0D0D2A;padding:0 12px;font-size:12px;font-weight:600;color:white;border:none;cursor:pointer">Export</button>
            </div>

            <div class="overflow-x-auto">
              <table class="min-w-full">
                <thead>
                  <tr style="background:#0D0D2A;text-align:left">
                    {['Role Name', 'Role Key', 'Department', 'Users', 'Permissions', 'Status', 'Actions'].map(h => (
                      <th style="padding:10px 20px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:#FFFFFF;white-space:nowrap">{h}</th>
                    ))}
                  </tr>
                </thead>
                <tbody>
                  <Show
                    when={filteredRows().length > 0}
                    fallback={
                      <tr>
                        <td colspan="7" style="padding:48px 24px;text-align:center">
                          <Show when={isLoading()} fallback={
                            <>
                              <p style="font-size:15px;font-weight:600;color:#111827">No internal roles found</p>
                              <p style="margin-top:6px;font-size:13px;color:#6B7280">Create your first role to get started.</p>
                              <button type="button" onClick={openCreate} style="margin-top:16px;display:inline-flex;align-items:center;gap:6px;border-radius:10px;background:#0D0D2A;padding:8px 16px;font-size:13px;font-weight:600;color:white;border:none;cursor:pointer">Create Role</button>
                            </>
                          }>
                            <p style="font-size:13px;color:#6B7280">Loading...</p>
                          </Show>
                        </td>
                      </tr>
                    }
                  >
                    <For each={filteredRows()}>
                      {(row) => (
                        <tr style="border-bottom:1px solid #F3F4F6" class="hover:bg-[#FAFAFA] transition-colors">
                          <td style="padding:12px 20px">
                            <p style="font-size:14px;font-weight:600;color:#111827">{row.name}</p>
                            <Show when={row.description}>
                              <p style="font-size:12px;color:#9CA3AF;margin-top:1px">{row.description}</p>
                            </Show>
                          </td>
                          <td style="padding:12px 20px;font-size:12px;font-family:monospace;color:#6B7280">{row.key || '—'}</td>
                          <td style="padding:12px 20px;font-size:13px;color:#374151">{row.department || '—'}</td>
                          <td style="padding:12px 20px;font-size:13px;color:#374151">{Number(row.usersAssigned || 0)} users</td>
                          <td style="padding:12px 20px;font-size:13px;color:#374151">{Number(row.permissionsCount || 0)}</td>
                          <td style="padding:12px 20px"><StatusBadge status={row.status} /></td>
                          <td style="padding:12px 20px;position:relative">
                            <button type="button" onClick={() => setOpenMenuId(openMenuId() === row.id ? null : row.id)} style="display:inline-flex;height:32px;width:32px;align-items:center;justify-content:center;border-radius:8px;color:#9CA3AF;background:none;border:none;cursor:pointer">
                              <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><circle cx="12" cy="5" r="1.5"/><circle cx="12" cy="12" r="1.5"/><circle cx="12" cy="19" r="1.5"/></svg>
                            </button>
                            <Show when={openMenuId() === row.id}>
                              <div style="position:absolute;right:20px;top:44px;z-index:20;width:200px;border-radius:12px;border:1px solid #E5E7EB;background:white;padding:6px;box-shadow:0 4px 20px rgba(0,0,0,0.12)">
                                <button type="button" onClick={() => void openDetail(row)} style="display:flex;width:100%;align-items:center;gap:10px;border-radius:8px;padding:10px 12px;font-size:13px;color:#374151;background:none;border:none;cursor:pointer;text-align:left">
                                  <svg style="width:15px;height:15px;color:#FF5E13;flex-shrink:0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg>
                                  View Role
                                </button>
                                <button type="button" onClick={() => openEdit(row)} style="display:flex;width:100%;align-items:center;gap:10px;border-radius:8px;padding:10px 12px;font-size:13px;color:#374151;background:none;border:none;cursor:pointer;text-align:left">
                                  <svg style="width:15px;height:15px;color:#FF5E13;flex-shrink:0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 20h9"/><path d="m16.5 3.5 4 4L7 21H3v-4L16.5 3.5Z"/></svg>
                                  Edit Role
                                </button>
                                <button type="button" onClick={() => void toggleStatus(row)} style="display:flex;width:100%;align-items:center;gap:10px;border-radius:8px;padding:10px 12px;font-size:13px;color:#374151;background:none;border:none;cursor:pointer;text-align:left">
                                  <svg style="width:15px;height:15px;color:#FF5E13;flex-shrink:0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="9"/><path d="M9 12l2 2 4-4"/></svg>
                                  {row.status === 'ACTIVE' ? 'Deactivate' : 'Activate'}
                                </button>
                                <div style="height:1px;background:#F3F4F6;margin:4px 0" />
                                <button type="button" onClick={() => void deleteRole(row.id, row.name)} style="display:flex;width:100%;align-items:center;gap:10px;border-radius:8px;padding:10px 12px;font-size:13px;color:#DC2626;background:none;border:none;cursor:pointer;text-align:left">
                                  <svg style="width:15px;height:15px;flex-shrink:0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M3 6h18M8 6V4h8v2M19 6l-1 14H6L5 6M10 11v6M14 11v6"/></svg>
                                  Delete Role
                                </button>
                              </div>
                            </Show>
                          </td>
                        </tr>
                      )}
                    </For>
                  </Show>
                </tbody>
              </table>
            </div>
          </div>
        </Show>

        {/* ── FORM VIEW ── */}
        <Show when={view() === 'form'}>
          <div style="margin-top:24px;display:flex;align-items:center;gap:24px;border-bottom:1px solid #E5E7EB">
            <button type="button" onClick={() => { setView('list'); resetForm(); }} style="padding-bottom:12px;font-size:14px;font-weight:500;color:#6B7280;background:none;border:none;cursor:pointer">All Roles</button>
            <button type="button" style="padding-bottom:12px;font-size:14px;font-weight:500;color:#FF5E13;border-bottom:2px solid #FF5E13;background:none;cursor:pointer;margin-bottom:-1px">{editingId() ? 'Edit Role' : 'Create Role'}</button>
          </div>

          <div style="margin-top:24px;border-radius:16px;border:1px solid #E5E7EB;background:white;box-shadow:0 1px 4px rgba(0,0,0,0.06);overflow:hidden">
            <div style="display:flex;align-items:center;gap:4px;border-bottom:1px solid #E5E7EB;padding:0 24px">
              {(['general', 'permissions', 'settings'] as const).map((tab, i) => {
                const labels = ['General Information', 'Module Access', 'Role Settings'];
                const active = () => formTab() === tab;
                return (
                  <button type="button" onClick={() => setFormTab(tab)} style={`position:relative;padding:14px 8px;font-size:13px;font-weight:500;background:none;border:none;cursor:pointer;color:${active() ? '#FF5E13' : '#6B7280'}`}>
                    {labels[i]}
                    <Show when={active()}><span style="position:absolute;left:0;right:0;bottom:0;height:2px;background:#FF5E13;border-radius:2px 2px 0 0" /></Show>
                  </button>
                );
              })}
            </div>

            <div style="padding:24px">
              <Show when={formError()}>
                <div style="margin-bottom:20px;border-radius:10px;border:1px solid #FECACA;background:#FEF2F2;padding:12px 16px;font-size:13px;color:#B91C1C">{formError()}</div>
              </Show>

              {/* General */}
              <Show when={formTab() === 'general'}>
                <div style="display:flex;flex-direction:column;gap:20px">
                  <div style="display:grid;grid-template-columns:1fr 1fr;gap:20px">
                    <FormInput label="Role Name" required value={name()} onInput={setName} placeholder="e.g. HR Manager" />
                    <FormInput label="Role Key" required value={roleKey()} onInput={setRoleKey} placeholder="e.g. HR_MANAGER" />
                  </div>
                  <div style="display:grid;grid-template-columns:1fr 1fr;gap:20px">
                    <label style="display:block">
                      <span style="font-size:13px;font-weight:600;color:#374151">Department</span>
                      <select
                        value={departmentId()}
                        onChange={(e) => setDepartmentId(e.currentTarget.value)}
                        style="display:block;margin-top:6px;height:40px;width:100%;border-radius:10px;border:1px solid #E5E7EB;background:white;padding:0 14px;font-size:13px;color:#111827;outline:none;box-sizing:border-box;appearance:none"
                      >
                        <option value="">Select department</option>
                        <For each={departments()}>{(d) => <option value={d.id}>{d.name}</option>}</For>
                      </select>
                    </label>
                    <label style="display:block">
                      <span style="font-size:13px;font-weight:600;color:#374151">Status</span>
                      <div style="margin-top:6px;display:flex;gap:8px">
                        {(['ACTIVE', 'INACTIVE'] as const).map((s) => (
                          <button
                            type="button"
                            onClick={() => setStatus(s)}
                            style={`flex:1;height:40px;border-radius:10px;font-size:13px;font-weight:600;cursor:pointer;border:1px solid ${status() === s ? '#FF5E13' : '#E5E7EB'};background:${status() === s ? '#FFF3EE' : 'white'};color:${status() === s ? '#FF5E13' : '#6B7280'}`}
                          >
                            {s === 'ACTIVE' ? 'Active' : 'Inactive'}
                          </button>
                        ))}
                      </div>
                    </label>
                  </div>
                  <label style="display:block">
                    <span style="font-size:13px;font-weight:600;color:#374151">Description</span>
                    <textarea
                      value={description()}
                      onInput={(e) => setDescription(e.currentTarget.value)}
                      placeholder="Brief description of this role's responsibilities..."
                      rows="3"
                      style="display:block;margin-top:6px;width:100%;border-radius:10px;border:1px solid #E5E7EB;background:white;padding:10px 14px;font-size:13px;color:#111827;outline:none;resize:none;box-sizing:border-box;font-family:inherit"
                    />
                  </label>
                </div>
              </Show>

              {/* Permissions */}
              <Show when={formTab() === 'permissions'}>
                <div>
                  <p style="margin-bottom:16px;font-size:13px;color:#6B7280">Select the module access permissions for this role.</p>
                  <div style="border:1px solid #E5E7EB;border-radius:12px;overflow:hidden">
                    <table style="width:100%;border-collapse:collapse">
                      <thead style="background:#F9FAFB">
                        <tr style="text-align:left">
                          <th style="padding:12px 16px;font-size:11px;font-weight:600;color:#6B7280;text-transform:uppercase">Module</th>
                          <For each={ACTIONS}>
                            {(action) => (
                              <th style="padding:12px 16px;font-size:11px;font-weight:600;color:#6B7280;text-transform:uppercase;text-align:center">{action.charAt(0) + action.slice(1).toLowerCase()}</th>
                            )}
                          </For>
                        </tr>
                      </thead>
                      <tbody>
                        <For each={MODULE_PERMISSIONS}>
                          {(mp) => (
                            <tr style="border-top:1px solid #E5E7EB">
                              <td style="padding:12px 16px;font-size:13px;font-weight:600;color:#111827">{mp.module}</td>
                              <For each={ACTIONS}>
                                {(action) => {
                                  const pk = permKey(mp.prefix, action);
                                  return (
                                    <td style="padding:12px 16px;text-align:center">
                                      <input
                                        type="checkbox"
                                        checked={selectedPermissions().has(pk)}
                                        onChange={() => togglePermission(pk)}
                                        style="width:16px;height:16px;accent-color:#FF5E13;cursor:pointer"
                                      />
                                    </td>
                                  );
                                }}
                              </For>
                            </tr>
                          )}
                        </For>
                      </tbody>
                    </table>
                  </div>
                </div>
              </Show>

              {/* Settings */}
              <Show when={formTab() === 'settings'}>
                <div style="display:flex;flex-direction:column;gap:20px">
                  <div style="display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;background:#F9FAFB;border:1px solid #E5E7EB">
                    <div>
                      <p style="font-size:13px;font-weight:600;color:#111827">Can Approve Requests</p>
                      <p style="font-size:12px;color:#6B7280;margin-top:2px">Users with this role can make final decisions in Approval Management.</p>
                    </div>
                    <button
                      type="button"
                      onClick={() => setCanApproveRequests(v => !v)}
                      style={`position:relative;width:44px;height:24px;border-radius:12px;border:none;cursor:pointer;background:${canApproveRequests() ? '#FF5E13' : '#E5E7EB'};transition:background 0.2s;flex-shrink:0`}
                    >
                      <span style={`position:absolute;top:2px;width:20px;height:20px;border-radius:50%;background:white;box-shadow:0 1px 3px rgba(0,0,0,0.2);transition:left 0.2s;left:${canApproveRequests() ? '22px' : '2px'}`} />
                    </button>
                  </div>
                  <div style="display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;background:#F9FAFB;border:1px solid #E5E7EB">
                    <div>
                      <p style="font-size:13px;font-weight:600;color:#111827">Can Manage System Settings</p>
                      <p style="font-size:12px;color:#6B7280;margin-top:2px">Users with this role can access and modify system-level configurations.</p>
                    </div>
                    <button
                      type="button"
                      onClick={() => setCanManageSystemSettings(v => !v)}
                      style={`position:relative;width:44px;height:24px;border-radius:12px;border:none;cursor:pointer;background:${canManageSystemSettings() ? '#FF5E13' : '#E5E7EB'};transition:background 0.2s;flex-shrink:0`}
                    >
                      <span style={`position:absolute;top:2px;width:20px;height:20px;border-radius:50%;background:white;box-shadow:0 1px 3px rgba(0,0,0,0.2);transition:left 0.2s;left:${canManageSystemSettings() ? '22px' : '2px'}`} />
                    </button>
                  </div>
                </div>
              </Show>
            </div>

            <div style="display:flex;align-items:center;justify-content:flex-end;gap:10px;border-top:1px solid #E5E7EB;padding:14px 24px">
              <button type="button" onClick={() => { setView('list'); resetForm(); }} style="height:38px;border-radius:10px;border:1px solid #E5E7EB;background:white;padding:0 20px;font-size:13px;font-weight:600;color:#374151;cursor:pointer">Cancel</button>
              <button type="button" onClick={() => void save()} disabled={isSaving()} style="height:38px;border-radius:10px;background:#0D0D2A;padding:0 24px;font-size:13px;font-weight:600;color:white;border:none;cursor:pointer">
                {isSaving() ? 'Saving...' : editingId() ? 'Update Role' : 'Create Role'}
              </button>
            </div>
          </div>
        </Show>

        {/* ── DETAIL VIEW ── */}
        <Show when={view() === 'detail' && viewingRole()}>
          <div style="margin-top:24px;display:flex;align-items:center;gap:24px;border-bottom:1px solid #E5E7EB">
            <button type="button" onClick={() => { setView('list'); setListTab('all'); }} style="padding-bottom:12px;font-size:14px;font-weight:500;color:#6B7280;background:none;border:none;cursor:pointer">All Roles</button>
            <button type="button" style="padding-bottom:12px;font-size:14px;font-weight:500;color:#FF5E13;border-bottom:2px solid #FF5E13;background:none;cursor:pointer;margin-bottom:-1px">View Role</button>
          </div>

          <div style="margin-top:24px;border-radius:16px;border:1px solid #E5E7EB;background:white;box-shadow:0 1px 4px rgba(0,0,0,0.06);overflow:hidden">
            <div style="padding:24px;border-bottom:1px solid #E5E7EB;display:flex;align-items:center;justify-content:space-between">
              <div>
                <div style="display:flex;align-items:center;gap:12px">
                  <h2 style="font-size:20px;font-weight:700;color:#111827">{viewingRole()!.name}</h2>
                  <StatusBadge status={viewingRole()!.status} />
                </div>
                <p style="font-size:13px;color:#6B7280;margin-top:4px">
                  Key: <code style="font-family:monospace;background:#F3F4F6;padding:1px 6px;border-radius:4px">{viewingRole()!.key || '—'}</code>
                  {viewingRole()!.department ? ` • ${viewingRole()!.department}` : ''}
                  {` • ${Number(viewingRole()!.usersAssigned || 0)} users assigned`}
                </p>
                <Show when={viewingRole()!.description}>
                  <p style="font-size:13px;color:#6B7280;margin-top:2px">{viewingRole()!.description}</p>
                </Show>
              </div>
              <button type="button" onClick={() => openEdit(viewingRole()!)} style="height:36px;border-radius:8px;background:#0D0D2A;padding:0 16px;font-size:13px;font-weight:600;color:white;border:none;cursor:pointer">Edit Role</button>
            </div>

            <div style="display:flex;align-items:center;gap:4px;border-bottom:1px solid #E5E7EB;padding:0 24px;background:#FAFAFA">
              {(['permissions', 'users', 'logs'] as const).map((tab, i) => {
                const labels = ['Permissions', 'Assigned Users', 'Activity Logs'];
                const active = () => detailTab() === tab;
                return (
                  <button type="button" onClick={() => setDetailTab(tab)} style={`position:relative;padding:14px 12px;font-size:13px;font-weight:600;background:none;border:none;cursor:pointer;color:${active() ? '#FF5E13' : '#6B7280'}`}>
                    {labels[i]}
                    <Show when={active()}><span style="position:absolute;left:0;right:0;bottom:0;height:2px;background:#FF5E13;border-radius:2px 2px 0 0" /></Show>
                  </button>
                );
              })}
            </div>

            <div style="padding:24px">
              <Show when={detailTab() === 'permissions'}>
                <div style="border:1px solid #E5E7EB;border-radius:12px;overflow:hidden">
                  <table style="width:100%;border-collapse:collapse">
                    <thead style="background:#F9FAFB">
                      <tr style="text-align:left">
                        <th style="padding:12px 16px;font-size:11px;font-weight:600;color:#6B7280;text-transform:uppercase">Module</th>
                        <For each={ACTIONS}>
                          {(action) => (
                            <th style="padding:12px 16px;font-size:11px;font-weight:600;color:#6B7280;text-transform:uppercase;text-align:center">{action.charAt(0) + action.slice(1).toLowerCase()}</th>
                          )}
                        </For>
                      </tr>
                    </thead>
                    <tbody>
                      <For each={MODULE_PERMISSIONS}>
                        {(mp) => (
                          <tr style="border-top:1px solid #E5E7EB">
                            <td style="padding:12px 16px;font-size:13px;font-weight:600;color:#111827">{mp.module}</td>
                            <For each={ACTIONS}>
                              {(action) => {
                                const pk = permKey(mp.prefix, action);
                                const has = () => viewingPermissions().includes(pk);
                                return (
                                  <td style="padding:12px 16px;text-align:center">
                                    <input type="checkbox" checked={has()} disabled style={`width:16px;height:16px;accent-color:#FF5E13;cursor:default;opacity:${has() ? '1' : '0.4'}`} />
                                  </td>
                                );
                              }}
                            </For>
                          </tr>
                        )}
                      </For>
                    </tbody>
                  </table>
                </div>
                <div style="margin-top:16px;display:flex;gap:16px">
                  <div style="display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;background:#F9FAFB;border:1px solid #E5E7EB">
                    <p style="font-size:13px;font-weight:600;color:#111827">Can Approve Requests:</p>
                    <span style={`font-size:13px;font-weight:600;color:${viewingRole()!.canApproveRequests ? '#FF5E13' : '#9CA3AF'}`}>{viewingRole()!.canApproveRequests ? 'Yes' : 'No'}</span>
                  </div>
                  <div style="display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;background:#F9FAFB;border:1px solid #E5E7EB">
                    <p style="font-size:13px;font-weight:600;color:#111827">Can Manage Settings:</p>
                    <span style={`font-size:13px;font-weight:600;color:${viewingRole()!.canManageSystemSettings ? '#FF5E13' : '#9CA3AF'}`}>{viewingRole()!.canManageSystemSettings ? 'Yes' : 'No'}</span>
                  </div>
                </div>
              </Show>

              <Show when={detailTab() === 'users'}>
                <div style="padding:32px;text-align:center">
                  <p style="font-size:14px;font-weight:600;color:#111827">{Number(viewingRole()!.usersAssigned || 0)} users assigned</p>
                  <p style="margin-top:6px;font-size:13px;color:#6B7280">Detailed user list will be available when employee management is connected.</p>
                </div>
              </Show>

              <Show when={detailTab() === 'logs'}>
                <div style="padding:32px;text-align:center">
                  <p style="font-size:13px;color:#6B7280">Activity logs will appear here.</p>
                </div>
              </Show>
            </div>

            <div style="padding:16px 24px;border-top:1px solid #E5E7EB;display:flex;justify-content:flex-end">
              <button type="button" onClick={() => { setView('list'); setListTab('all'); }} style="height:36px;border-radius:8px;border:1px solid #E5E7EB;background:white;padding:0 16px;font-size:13px;font-weight:600;color:#374151;cursor:pointer">Back to List</button>
            </div>
          </div>
        </Show>

      </div>
    </AdminShell>
  );
}