Add pricing, tariffs, loyalty, maintenance, discounts features

- TariffsPage (/tariffs): rate plan builder — meal plans (RO/BB/HB/FB/AI),
  inclusions picker, price modifier (% or ₽), min nights, cancellation policy
- DynamicPricingPage (/dynamic-pricing): rule engine for weekends, holidays,
  seasons, custom date ranges, weather; interactive price calendar preview
  with colour-coded effective rates per day
- LoyaltyPage (/loyalty): program settings (points/₽, point value, expiry),
  4-level structure (Bronze/Silver/Gold/Platinum) with editable perks,
  guest portal preview mockup, top-guests leaderboard
- MaintenancePage (/maintenance): scheduled room & service downtime records;
  status flow (scheduled → in_progress → done); time range support for services
- DiscountsPage (/discounts): discount catalogue — % or ₽, category (all /
  loyalty / corporate / promo), min nights, validity dates, active toggle
- BookingModal: discount now selected from dropdown of active discounts only
  (replaces free-form input); summary shows discount name + saved amount
- Sidebar: new "Цены и тарифы" section (Тарифы, Динамические цены, Скидки);
  Управление extended with Лояльность and Тех. перерывы

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/DiscountsPage.tsx

@@ -0,0 +1,435 @@
+import { useState } from 'react'
+import {
+  Plus, Edit2, Trash2, ToggleLeft, ToggleRight, Tag, Percent,
+  Calendar, Users, Info, Check,
+} from 'lucide-react'
+import { Modal } from '../components/ui/Modal'
+import { cn } from '../lib/utils'
+
+// ─── Types ────────────────────────────────────────────────────────────────────
+
+type DiscountTarget = 'all' | 'loyalty' | 'corporate' | 'promo'
+type DiscountValueType = 'percent' | 'fixed'
+
+export interface Discount {
+  id: string
+  name: string
+  code: string
+  valueType: DiscountValueType
+  value: number           // % or ₽ off the room price
+  target: DiscountTarget
+  minNights?: number
+  validFrom?: string
+  validTo?: string
+  isActive: boolean
+  note: string
+}
+
+// ─── Mock ─────────────────────────────────────────────────────────────────────
+
+export const MOCK_DISCOUNTS: Discount[] = [
+  {
+    id: 'd-1',
+    name: 'Скидка постоянному гостю',
+    code: 'LOYAL',
+    valueType: 'percent',
+    value: 10,
+    target: 'loyalty',
+    isActive: true,
+    note: 'Применяется для гостей уровня Серебро и выше',
+  },
+  {
+    id: 'd-2',
+    name: 'Корпоративная скидка',
+    code: 'CORP15',
+    valueType: 'percent',
+    value: 15,
+    target: 'corporate',
+    isActive: true,
+    note: 'Для корпоративных договоров. Требует подтверждения менеджера.',
+  },
+  {
+    id: 'd-3',
+    name: 'Бесплатное проживание',
+    code: 'FREE',
+    valueType: 'percent',
+    value: 100,
+    target: 'all',
+    isActive: true,
+    note: 'Полная отмена стоимости проживания. Только с одобрения директора.',
+  },
+  {
+    id: 'd-4',
+    name: 'Длительное проживание (7+ ночей)',
+    code: 'LONG7',
+    valueType: 'percent',
+    value: 20,
+    target: 'all',
+    minNights: 7,
+    isActive: true,
+    note: 'Автоматически предлагается при бронировании от 7 ночей',
+  },
+  {
+    id: 'd-5',
+    name: 'Весенняя акция',
+    code: 'SPRING26',
+    valueType: 'percent',
+    value: 25,
+    target: 'promo',
+    validFrom: '2026-03-01',
+    validTo: '2026-04-30',
+    isActive: false,
+    note: 'Сезонная акция. Не суммируется с другими скидками.',
+  },
+  {
+    id: 'd-6',
+    name: 'Фиксированная скидка 1000 ₽',
+    code: 'FLAT1000',
+    valueType: 'fixed',
+    value: 1000,
+    target: 'all',
+    isActive: true,
+    note: 'Разовая скидка для новых гостей',
+  },
+]
+
+// ─── Helpers ──────────────────────────────────────────────────────────────────
+
+const TARGET_META: Record<DiscountTarget, { label: string; cls: string }> = {
+  all:        { label: 'Все гости',     cls: 'bg-slate-100 text-slate-700 dark:bg-slate-700 dark:text-slate-300' },
+  loyalty:    { label: 'Программа лояльности', cls: 'bg-violet-100 text-violet-700 dark:bg-violet-900/30 dark:text-violet-400' },
+  corporate:  { label: 'Корпоративный', cls: 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400' },
+  promo:      { label: 'Промо-акция',   cls: 'bg-pink-100 text-pink-700 dark:bg-pink-900/30 dark:text-pink-400' },
+}
+
+// ─── Discount Modal ───────────────────────────────────────────────────────────
+
+const EMPTY: Omit<Discount, 'id'> = {
+  name: '', code: '', valueType: 'percent', value: 10,
+  target: 'all', isActive: true, note: '',
+}
+
+function DiscountModal({
+  discount, onSave, onClose,
+}: {
+  discount?: Discount
+  onSave: (d: Omit<Discount, 'id'>) => void
+  onClose: () => void
+}) {
+  const [form, setForm] = useState<Omit<Discount, 'id'>>(discount ? { ...discount } : { ...EMPTY })
+  const set = <K extends keyof typeof form>(k: K, v: typeof form[K]) =>
+    setForm(prev => ({ ...prev, [k]: v }))
+
+  return (
+    <Modal
+      open
+      onClose={onClose}
+      title={discount ? 'Редактировать скидку' : 'Новая скидка'}
+      size="lg"
+      footer={
+        <>
+          <button onClick={onClose} className="btn-secondary">Отмена</button>
+          <button
+            onClick={() => { if (form.name && form.code) onSave(form) }}
+            className="btn-primary"
+            disabled={!form.name || !form.code}
+          >
+            {discount ? 'Сохранить' : 'Создать скидку'}
+          </button>
+        </>
+      }
+    >
+      <div className="space-y-4">
+        <div className="grid grid-cols-3 gap-3">
+          <div className="col-span-2">
+            <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Название *</label>
+            <input type="text" className="input" placeholder="Корпоративная скидка"
+              value={form.name} onChange={e => set('name', e.target.value)} />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Код *</label>
+            <input type="text" className="input font-mono uppercase" placeholder="CORP15"
+              value={form.code}
+              onChange={e => set('code', e.target.value.toUpperCase())} />
+          </div>
+        </div>
+
+        {/* Value type + value */}
+        <div>
+          <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Размер скидки</label>
+          <div className="flex gap-1.5">
+            <button
+              type="button"
+              onClick={() => set('valueType', 'percent')}
+              className={cn('px-3 py-2 rounded-lg text-sm font-medium border transition-colors',
+                form.valueType === 'percent'
+                  ? 'bg-brand-600 text-white border-brand-600'
+                  : 'bg-white dark:bg-slate-700 text-slate-600 dark:text-slate-300 border-slate-200 dark:border-slate-600'
+              )}
+            >% от стоимости</button>
+            <button
+              type="button"
+              onClick={() => set('valueType', 'fixed')}
+              className={cn('px-3 py-2 rounded-lg text-sm font-medium border transition-colors',
+                form.valueType === 'fixed'
+                  ? 'bg-brand-600 text-white border-brand-600'
+                  : 'bg-white dark:bg-slate-700 text-slate-600 dark:text-slate-300 border-slate-200 dark:border-slate-600'
+              )}
+            >₽ фиксированная</button>
+            <input
+              type="number" min={0}
+              max={form.valueType === 'percent' ? 100 : undefined}
+              className="input w-28 text-sm"
+              value={form.value || ''}
+              onChange={e => set('value', Math.max(0, parseInt(e.target.value) || 0))}
+            />
+            <span className="flex items-center text-sm text-slate-500 px-1">
+              {form.valueType === 'percent' ? '%' : '₽'}
+            </span>
+          </div>
+          {form.valueType === 'percent' && form.value === 100 && (
+            <p className="text-xs text-amber-600 dark:text-amber-400 mt-1 flex items-center gap-1">
+              <Info size={11} /> Скидка 100% означает бесплатное проживание
+            </p>
+          )}
+        </div>
+
+        {/* Target */}
+        <div>
+          <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-2">Категория гостей</label>
+          <div className="grid grid-cols-2 gap-2">
+            {(Object.entries(TARGET_META) as [DiscountTarget, typeof TARGET_META[DiscountTarget]][]).map(([k, v]) => (
+              <button
+                key={k}
+                type="button"
+                onClick={() => set('target', k)}
+                className={cn(
+                  'flex items-center gap-2 px-3 py-2.5 rounded-xl border text-sm font-medium transition-colors',
+                  form.target === k
+                    ? 'bg-brand-600 border-brand-600 text-white'
+                    : 'bg-white dark:bg-slate-700 border-slate-200 dark:border-slate-600 text-slate-600 dark:text-slate-300 hover:border-brand-400',
+                )}
+              >
+                {form.target === k && <Check size={13} />}
+                {v.label}
+              </button>
+            ))}
+          </div>
+        </div>
+
+        {/* Optional: minNights + validity */}
+        <div className="grid grid-cols-3 gap-3">
+          <div>
+            <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">
+              Мин. ночей
+            </label>
+            <input
+              type="number" min={1} className="input"
+              placeholder="1"
+              value={form.minNights ?? ''}
+              onChange={e => set('minNights', parseInt(e.target.value) || undefined)}
+            />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Действует с</label>
+            <input type="date" className="input"
+              value={form.validFrom ?? ''}
+              onChange={e => set('validFrom', e.target.value || undefined)} />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Действует до</label>
+            <input type="date" className="input"
+              value={form.validTo ?? ''}
+              onChange={e => set('validTo', e.target.value || undefined)} />
+          </div>
+        </div>
+
+        {/* Note */}
+        <div>
+          <label className="block text-sm font-medium text-slate-700 dark:text-slate-300 mb-1.5">Примечание</label>
+          <textarea className="input resize-none" rows={2}
+            placeholder="Условия применения, кто имеет право выдавать..."
+            value={form.note} onChange={e => set('note', e.target.value)} />
+        </div>
+
+        {/* Active toggle */}
+        <div className="flex items-center justify-between p-3 rounded-xl bg-slate-50 dark:bg-slate-700/40 border border-slate-200 dark:border-slate-600">
+          <p className="text-sm font-medium text-slate-700 dark:text-slate-300">Скидка активна</p>
+          <button type="button" onClick={() => set('isActive', !form.isActive)}
+            className={cn('transition-colors', form.isActive ? 'text-brand-600' : 'text-slate-400')}>
+            {form.isActive ? <ToggleRight size={28} /> : <ToggleLeft size={28} />}
+          </button>
+        </div>
+      </div>
+    </Modal>
+  )
+}
+
+// ─── Main Page ────────────────────────────────────────────────────────────────
+
+export function DiscountsPage() {
+  const [discounts, setDiscounts] = useState<Discount[]>(MOCK_DISCOUNTS)
+  const [modal, setModal]         = useState<'create' | Discount | null>(null)
+  const [delTarget, setDel]       = useState<Discount | null>(null)
+
+  const save = (data: Omit<Discount, 'id'>) => {
+    if (typeof modal === 'object' && modal !== null) {
+      setDiscounts(prev => prev.map(d => d.id === modal.id ? { ...data, id: modal.id } : d))
+    } else {
+      setDiscounts(prev => [...prev, { ...data, id: `d-${Date.now()}` }])
+    }
+    setModal(null)
+  }
+
+  const toggleActive = (id: string) =>
+    setDiscounts(prev => prev.map(d => d.id === id ? { ...d, isActive: !d.isActive } : d))
+
+  return (
+    <div className="p-6 space-y-6">
+      {/* Header */}
+      <div className="flex items-center justify-between">
+        <div>
+          <h1 className="text-2xl font-bold text-slate-900 dark:text-slate-100">Скидки</h1>
+          <p className="text-sm text-slate-500 dark:text-slate-400 mt-0.5">
+            Справочник скидок — выбирается при создании бронирования
+          </p>
+        </div>
+        <button onClick={() => setModal('create')} className="btn-primary flex items-center gap-2">
+          <Plus size={16} />
+          Новая скидка
+        </button>
+      </div>
+
+      {/* Stats */}
+      <div className="grid grid-cols-4 gap-4">
+        {[
+          { label: 'Всего скидок',  value: discounts.length },
+          { label: 'Активных',      value: discounts.filter(d => d.isActive).length },
+          { label: 'По % от суммы', value: discounts.filter(d => d.valueType === 'percent').length },
+          { label: 'Фиксированных', value: discounts.filter(d => d.valueType === 'fixed').length },
+        ].map(s => (
+          <div key={s.label} className="card p-4 text-center">
+            <p className="text-xs text-slate-500 dark:text-slate-400">{s.label}</p>
+            <p className="text-3xl font-bold mt-1 text-slate-900 dark:text-slate-100">{s.value}</p>
+          </div>
+        ))}
+      </div>
+
+      <div className="flex items-start gap-3 p-4 rounded-xl bg-brand-50 dark:bg-brand-900/10 border border-brand-200 dark:border-brand-800">
+        <Info size={16} className="text-brand-600 dark:text-brand-400 mt-0.5 shrink-0" />
+        <p className="text-sm text-brand-700 dark:text-brand-400">
+          При создании бронирования менеджер выбирает скидку из этого справочника.
+          Скидка применяется к стоимости проживания. Активные скидки отображаются в выпадающем списке.
+        </p>
+      </div>
+
+      {/* Discounts list */}
+      <div className="space-y-2">
+        {discounts.map(discount => (
+          <div
+            key={discount.id}
+            className={cn(
+              'card p-4 flex items-center gap-4 transition-opacity',
+              !discount.isActive && 'opacity-55',
+            )}
+          >
+            {/* Icon */}
+            <div className={cn(
+              'w-10 h-10 rounded-xl flex items-center justify-center shrink-0',
+              discount.valueType === 'percent' ? 'bg-brand-50 dark:bg-brand-900/20' : 'bg-emerald-50 dark:bg-emerald-900/20',
+            )}>
+              {discount.valueType === 'percent'
+                ? <Percent size={18} className="text-brand-600 dark:text-brand-400" />
+                : <Tag size={18} className="text-emerald-600 dark:text-emerald-400" />
+              }
+            </div>
+
+            {/* Main info */}
+            <div className="flex-1 min-w-0">
+              <div className="flex items-center gap-2 flex-wrap mb-0.5">
+                <span className="text-sm font-semibold text-slate-900 dark:text-slate-100">{discount.name}</span>
+                <code className="px-1.5 py-0.5 rounded bg-slate-100 dark:bg-slate-700 text-xs font-mono text-slate-600 dark:text-slate-300">
+                  {discount.code}
+                </code>
+                <span className={cn('px-2 py-0.5 rounded-full text-xs font-medium', TARGET_META[discount.target].cls)}>
+                  {TARGET_META[discount.target].label}
+                </span>
+                {!discount.isActive && (
+                  <span className="px-2 py-0.5 rounded-full text-xs bg-slate-100 text-slate-400 dark:bg-slate-700">Неактивна</span>
+                )}
+              </div>
+              {discount.note && (
+                <p className="text-xs text-slate-500 dark:text-slate-400">{discount.note}</p>
+              )}
+              <div className="flex items-center gap-3 mt-1 flex-wrap">
+                {discount.minNights && (
+                  <span className="flex items-center gap-1 text-xs text-slate-500 dark:text-slate-400">
+                    <Calendar size={11} /> Мин. {discount.minNights} ночей
+                  </span>
+                )}
+                {(discount.validFrom || discount.validTo) && (
+                  <span className="flex items-center gap-1 text-xs text-slate-500 dark:text-slate-400">
+                    <Calendar size={11} />
+                    {discount.validFrom ?? '...'} — {discount.validTo ?? '...'}
+                  </span>
+                )}
+              </div>
+            </div>
+
+            {/* Value badge */}
+            <div className="text-right shrink-0">
+              <p className={cn(
+                'text-xl font-bold',
+                discount.value === 100 ? 'text-emerald-600 dark:text-emerald-400' : 'text-brand-600 dark:text-brand-400',
+              )}>
+                {discount.value === 100 ? 'Бесплатно' : `−${discount.value}${discount.valueType === 'percent' ? '%' : ' ₽'}`}
+              </p>
+            </div>
+
+            {/* Actions */}
+            <div className="flex items-center gap-1 shrink-0">
+              <button
+                onClick={() => toggleActive(discount.id)}
+                className={cn('p-1.5 rounded-lg transition-colors', discount.isActive ? 'text-brand-600' : 'text-slate-400')}
+              >
+                {discount.isActive ? <ToggleRight size={20} /> : <ToggleLeft size={20} />}
+              </button>
+              <button onClick={() => setModal(discount)}
+                className="p-1.5 rounded-lg text-slate-400 hover:text-brand-600 hover:bg-brand-50 dark:hover:bg-brand-900/20 transition-colors">
+                <Edit2 size={15} />
+              </button>
+              <button onClick={() => setDel(discount)}
+                className="p-1.5 rounded-lg text-slate-400 hover:text-red-600 hover:bg-red-50 dark:hover:bg-red-900/20 transition-colors">
+                <Trash2 size={15} />
+              </button>
+            </div>
+          </div>
+        ))}
+      </div>
+
+      {modal && (
+        <DiscountModal
+          discount={typeof modal === 'object' ? modal : undefined}
+          onSave={save}
+          onClose={() => setModal(null)}
+        />
+      )}
+
+      {delTarget && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/50">
+          <div className="bg-white dark:bg-slate-800 rounded-2xl shadow-xl p-6 w-full max-w-sm">
+            <h3 className="text-lg font-semibold text-slate-900 dark:text-slate-100 mb-2">Удалить скидку?</h3>
+            <p className="text-sm text-slate-500 mb-4">«{delTarget.name}» будет удалена из справочника.</p>
+            <div className="flex justify-end gap-2">
+              <button onClick={() => setDel(null)} className="btn-secondary">Отмена</button>
+              <button
+                onClick={() => { setDiscounts(prev => prev.filter(d => d.id !== delTarget.id)); setDel(null) }}
+                className="px-4 py-2 rounded-xl bg-red-600 text-white text-sm font-medium hover:bg-red-700"
+              >Удалить</button>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  )
+}