1 
2**Vibecoding** je nove paradigma vyvoje softwaru, kde programator vede AI agenta pomoci instrukci v prirodzenem jazyce a necha umelou inteligenci psat skutecny kod. Termin vymyslel Andrej Karpathy (spoluzakladatel OpenAI a byvaly reditel AI v Tesle) ve slavnem tweetu z unora 2025: _"Existuje novy druh programovani, ktery nazyvam vibecoding, kde se plne oddate vibracim, primate exponencialy a zapomenete, ze kod vubec existuje."_
3 
4V tomto clanku si ukazeme, jak vytvorit kompletni, funkcni demo pomoci **Claude Code** jako AI agenta, **Supabase** jako backendu (databaze, autentizace, API) a **Vercel** pro nasazeni  -  vse s vyuzitim vyhradne **bezplatnych urovni** techto sluzeb.
5 
6## 1. Co je Vibecoding a proc je revolucni
7 
8Vibecoding predstavuje fundamentalni zmenu paradigmatu ve vyvoji softwaru. Misto psani kodu radek po radku vyvojar:
9 
101. **Popisuje**, co chce, v prirodzenem jazyce.
112. **AI agent** vygeneruje kompletni kod.
123. **Vyvojar** kontroluje, testuje a iteruje.
13 
14### Proc to funguje
15 
16- **Rychlost**: projekt, ktery by trval dny, lze postavit za hodiny.
17- **Pristupnost**: i mene zkuseni vyvojari mohou stavet funkcni produkty.
18- **Rychla iterace**: muzete testovat napady a pivotovat mnohem rychleji.
19- **Zamereni na produkt**: soustedite se na _co_ misto _jak_.
20 
21```mermaid
22flowchart LR
23    A[Idea] --> B[Natural language prompt]
24    B --> C[Claude Code generates code]
25    C --> D[Review and test]
26    D --> E[Iteration]
27    E --> B
28    D --> F[Deploy to Vercel]
29```
30 
31### Kdy pouzit Vibecoding
32 
33Vibecoding je idealni pro:
34 
35- **Dema a MVP**: rychle vytvoreni prototypu pro overeni napadu.
36- **Hackathony**: vytvoreni funkcniho produktu behem nekolika hodin.
37- **Vedlejsi projekty**: prozkoumani novych technologii bez investice tydnu.
38- **Proof of Concept**: prokazani technicke proveditelnosti zainteresovanym stranam nebo investorum.
39 
40> **Upozorneni:** Vibecoding je vynikajici pro dema a prototypy. Pro produkcni aplikace s vysokymi pozadavky na bezpecnost a skalovatelnost je dukladna kontrola vygenerovaneho kodu stale nezbytna.
41 
42## 2. Technologicky stack: Claude Code + Supabase + Vercel
43 
44### Claude Code
45 
46Claude Code je AI kodovaci agent od Anthropic. Pracuje primo ve vasem terminalu a muze:
47 
48- Cist a chapat celou kodovou zakladnu.
49- Vytvaret, upravovat a mazat soubory.
50- Provadet terminalove prikazy.
51- Interagovat s API a externimi sluzbami.
52- Spravovat verzovani pomoci Gitu.
53- Autonomne iterovat nad chybami a bugy.
54 
55```bash
56# Install Claude Code
57npm install -g @anthropic-ai/claude-code
58 
59# Start in a project directory
60cd my-project
61claude
62```
63 
64### Supabase (Bezplatna uroven)
65 
66Supabase je open-source alternativa k Firebase, ktera nabizi:
67 
68- **PostgreSQL databaze**: kompletni relacni databaze.
69- **Autentizace**: prihlaseni pomoci emailu, Google, GitHub atd.
70- **REST a Realtime API**: automaticky generovane z vaseho schematu.
71- **Uloziste**: pro soubory a obrazky.
72- **Edge Functions**: serverless funkce.
73 
74Bezplatna uroven zahrnuje:
75 
76| Zdroj | Bezplatny limit |
77|----------|-----------|
78| Databaze | 500 MB |
79| Uloziste | 1 GB |
80| Sirka pasma | 5 GB |
81| Vyvolani Edge Function | 500K/mesic |
82| Autentizovani uzivatele | Neomezene |
83| Projekty | 2 aktivni projekty |
84 
85### Vercel (Bezplatna uroven)
86 
87Vercel je idealni platforma pro nasazeni Next.js aplikaci:
88 
89- **Automaticke nasazeni** z GitHubu.
90- **Nahledove nasazeni** pro kazdou vetev a PR.
91- **Globalni CDN** pro optimalni vykon.
92- **Serverless Functions** zahrnuty.
93- **Zakladni analytika** zdarma.
94 
95Bezplatna uroven zahrnuje:
96 
97| Zdroj | Bezplatny limit |
98|----------|-----------|
99| Sirka pasma | 100 GB/mesic |
100| Provadeni Serverless Function | 100 GB-hodin/mesic |
101| Sestaveni | 6 000 minut/mesic |
102| Projekty | Neomezene |
103| Nasazeni | Neomezene |
104 
105## 3. Pocatecni nastaveni: Priprava prostredi
106 
107### Predpoklady
108 
109Pred zacatkem se ujistete, ze mate:
110 
111- **Node.js 18+** nainstalovany.
112- **Git** nakonfigurovany.
113- Ucet na **GitHubu**.
114- Ucet na **Supabase** (zdarma na [supabase.com](https://supabase.com)).
115- Ucet na **Vercel** (zdarma na [vercel.com](https://vercel.com)).
116- **Claude Code** nainstalovany (`npm install -g @anthropic-ai/claude-code`).
117 
118### Krok 1: Vytvorte projekt
119 
120Otevrete terminal a spustte Claude Code:
121 
122```bash
123mkdir my-demo-app && cd my-demo-app
124claude
125```
126 
127Nyni muzete zacit davat Claude Code instrukce v prirodzenem jazyce:
128 
129```
130You: Create a Next.js 15 project with App Router, TypeScript, Tailwind CSS,
131and shadcn/ui. Also initialize a Git repository.
132```
133 
134Claude Code automaticky provede:
135 
136```bash
137npx create-next-app@latest . --typescript --tailwind --eslint --app --src-dir
138npx shadcn@latest init
139git init && git add . && git commit -m "Initial commit"
140```
141 
142### Krok 2: Nakonfigurujte Supabase
143 
1441. Jdete na [supabase.com](https://supabase.com) a vytvorte novy projekt.
1452. Poznamejte si **URL projektu** a **anon klic** z Settings > API.
1463. Vratte se do terminalu s Claude Code:
147 
148```
149You: Add Supabase to the project. Create a .env.local file with the variables
150NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY. Configure the
151Supabase client with SSR support for Next.js App Router.
152```
153 
154Claude Code vytvori kompletni konfiguraci:
155 
156```typescript
157// src/lib/supabase/client.ts
158import { createBrowserClient } from '@supabase/ssr';
159 
160export function createClient() {
161  return createBrowserClient(
162    process.env.NEXT_PUBLIC_SUPABASE_URL!,
163    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
164  );
165}
166```
167 
168```typescript
169// src/lib/supabase/server.ts
170import { createServerClient } from '@supabase/ssr';
171import { cookies } from 'next/headers';
172 
173export async function createClient() {
174  const cookieStore = await cookies();
175 
176  return createServerClient(
177    process.env.NEXT_PUBLIC_SUPABASE_URL!,
178    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
179    {
180      cookies: {
181        getAll() {
182          return cookieStore.getAll();
183        },
184        setAll(cookiesToSet) {
185          cookiesToSet.forEach(({ name, value, options }) =>
186            cookieStore.set(name, value, options)
187          );
188        },
189      },
190    }
191  );
192}
193```
194 
195## 4. Stavba dema: Aplikace pro spravu uloh
196 
197Pojdme postavit konkretni demo: **aplikaci pro spravu uloh** s autentizaci, plnym CRUD a modernim rozhranim.
198 
199### Definice databazoveho schematu
200 
201Dejte Claude Code instrukce k vytvoreni schematu:
202 
203```
204You: Create a SQL migration for Supabase with the following tables:
205 
2061. profiles: id (uuid, FK to auth.users), username (text), avatar_url (text),
207   created_at
2082. projects: id (uuid), name (text), description (text), owner_id (uuid, FK
209   to profiles), created_at
2103. tasks: id (uuid), title (text), description (text), status (enum:
211   todo/in_progress/done), priority (enum: low/medium/high), project_id (uuid,
212   FK to projects), assigned_to (uuid, FK to profiles), due_date (timestamp),
213   created_at, updated_at
214 
215Enable Row Level Security on all tables and create appropriate policies.
216```
217 
218Claude Code vygeneruje kompletni migraci:
219 
220```sql
221-- Create enum types
222CREATE TYPE task_status AS ENUM ('todo', 'in_progress', 'done');
223CREATE TYPE task_priority AS ENUM ('low', 'medium', 'high');
224 
225-- Profiles table
226CREATE TABLE profiles (
227  id UUID REFERENCES auth.users ON DELETE CASCADE PRIMARY KEY,
228  username TEXT UNIQUE,
229  avatar_url TEXT,
230  created_at TIMESTAMPTZ DEFAULT NOW()
231);
232 
233-- Projects table
234CREATE TABLE projects (
235  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
236  name TEXT NOT NULL,
237  description TEXT,
238  owner_id UUID REFERENCES profiles(id) ON DELETE CASCADE NOT NULL,
239  created_at TIMESTAMPTZ DEFAULT NOW()
240);
241 
242-- Tasks table
243CREATE TABLE tasks (
244  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
245  title TEXT NOT NULL,
246  description TEXT,
247  status task_status DEFAULT 'todo',
248  priority task_priority DEFAULT 'medium',
249  project_id UUID REFERENCES projects(id) ON DELETE CASCADE NOT NULL,
250  assigned_to UUID REFERENCES profiles(id),
251  due_date TIMESTAMPTZ,
252  created_at TIMESTAMPTZ DEFAULT NOW(),
253  updated_at TIMESTAMPTZ DEFAULT NOW()
254);
255 
256-- Enable RLS
257ALTER TABLE profiles ENABLE ROW LEVEL SECURITY;
258ALTER TABLE projects ENABLE ROW LEVEL SECURITY;
259ALTER TABLE tasks ENABLE ROW LEVEL SECURITY;
260 
261-- Profiles policies
262CREATE POLICY "Users can view own profile"
263  ON profiles FOR SELECT USING (auth.uid() = id);
264CREATE POLICY "Users can update own profile"
265  ON profiles FOR UPDATE USING (auth.uid() = id);
266 
267-- Projects policies
268CREATE POLICY "Users can view own projects"
269  ON projects FOR SELECT USING (auth.uid() = owner_id);
270CREATE POLICY "Users can create projects"
271  ON projects FOR INSERT WITH CHECK (auth.uid() = owner_id);
272CREATE POLICY "Users can update own projects"
273  ON projects FOR UPDATE USING (auth.uid() = owner_id);
274CREATE POLICY "Users can delete own projects"
275  ON projects FOR DELETE USING (auth.uid() = owner_id);
276 
277-- Tasks policies
278CREATE POLICY "Users can view tasks in their projects"
279  ON tasks FOR SELECT USING (
280    project_id IN (SELECT id FROM projects WHERE owner_id = auth.uid())
281  );
282CREATE POLICY "Users can create tasks in their projects"
283  ON tasks FOR INSERT WITH CHECK (
284    project_id IN (SELECT id FROM projects WHERE owner_id = auth.uid())
285  );
286CREATE POLICY "Users can update tasks in their projects"
287  ON tasks FOR UPDATE USING (
288    project_id IN (SELECT id FROM projects WHERE owner_id = auth.uid())
289  );
290CREATE POLICY "Users can delete tasks in their projects"
291  ON tasks FOR DELETE USING (
292    project_id IN (SELECT id FROM projects WHERE owner_id = auth.uid())
293  );
294```
295 
296Tuto migraci muzete spustit primo z panelu Supabase (SQL Editor) nebo pres CLI.
297 
298### Generovani TypeScript typu
299 
300```
301You: Generate TypeScript types from the Supabase database and save them to src/types/database.ts
302```
303 
304```bash
305npx supabase gen types typescript --project-id YOUR_PROJECT_ID > src/types/database.ts
306```
307 
308### Vytvoreni uzivatelskeho rozhrani
309 
310Nyni prichazi nejmocnejsi cast vibecoding. Dejte Claude Code vysokourovnove instrukce:
311 
312```
313You: Create a dashboard page for the task management app with:
314 
3151. Sidebar with navigation between projects
3162. Kanban view with 3 columns (Todo, In Progress, Done) with drag & drop
3173. Modal to create/edit tasks
3184. Header with user avatar and logout
3195. Modern design with shadcn/ui and Tailwind
320 
321Use data from Supabase with React Server Components where possible
322and Client Components only where interactivity is needed.
323```
324 
325Claude Code postavi cele rozhrani, komponentu po komponente.
326 
327### Pridani autentizace
328 
329```
330You: Add a complete authentication system with:
331 
3321. Login page with email/password and GitHub login
3332. Registration page
3343. Middleware to protect authenticated routes
3354. Automatic redirect for unauthenticated users
3365. Automatic profile creation after registration
337```
338 
339Claude Code nakonfiguruje Next.js middleware a autentizacni stranky:
340 
341```typescript
342// src/middleware.ts
343import { createServerClient } from '@supabase/ssr';
344import { NextResponse, type NextRequest } from 'next/server';
345 
346export async function middleware(request: NextRequest) {
347  let supabaseResponse = NextResponse.next({ request });
348 
349  const supabase = createServerClient(
350    process.env.NEXT_PUBLIC_SUPABASE_URL!,
351    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
352    {
353      cookies: {
354        getAll() {
355          return request.cookies.getAll();
356        },
357        setAll(cookiesToSet) {
358          cookiesToSet.forEach(({ name, value }) =>
359            request.cookies.set(name, value)
360          );
361          supabaseResponse = NextResponse.next({ request });
362          cookiesToSet.forEach(({ name, value, options }) =>
363            supabaseResponse.cookies.set(name, value, options)
364          );
365        },
366      },
367    }
368  );
369 
370  const { data: { user } } = await supabase.auth.getUser();
371 
372  if (!user && !request.nextUrl.pathname.startsWith('/auth')) {
373    const url = request.nextUrl.clone();
374    url.pathname = '/auth/login';
375    return NextResponse.redirect(url);
376  }
377 
378  return supabaseResponse;
379}
380 
381export const config = {
382  matcher: ['/((?!_next/static|_next/image|favicon.ico|auth).*)'],
383};
384```
385 
386## 5. Pokrocile vzory Vibecoding
387 
388### Iterativni prompting
389 
390Tajemstvim efektivniho vibecoding je **iterace**. Nesnazse se popsat vse v jednom promptu. Postupujte po krocich:
391 
392```
393Krok 1: "Create the base layout with header and sidebar"
394Krok 2: "Add the project list in the sidebar with a button to create new ones"
395Krok 3: "Create the Kanban view in the main area"
396Krok 4: "Add drag & drop between columns"
397Krok 5: "Implement the modal to create new tasks"
398Krok 6: "Add toast notifications for user feedback"
399```
400 
401> **Tip:** Cim je prompt konkretnejsi a kontextualizovanejsi, tim lepsi vysledek. Claude Code ma pristup k cele kodove zakladne, takze muze nové funkce integrovat koherentne.
402 
403### Zpracovani chyb
404 
405Kdyz neco nefunguje (a stane se to), muzete jednoduše rici:
406 
407```
408You: I'm getting this error in the console: "TypeError: Cannot read property
409'map' of undefined" in the TaskList component. Fix it.
410```
411 
412Claude Code analyzuje kod, identifikuje problem a opravi ho.
413 
414### Refaktoring s AI
415 
416```
417You: The Dashboard component has become too large. Split it into smaller,
418reusable components while maintaining the same functionality.
419```
420 
421### Testovani
422 
423```
424You: Add tests with Vitest for utility functions and Playwright tests for
425the authentication and task creation flow.
426```
427 
428## 6. Nasazeni na Vercel: Od kodu do sveta
429 
430### Krok 1: Push na GitHub
431 
432```
433You: Create an appropriate .gitignore, commit everything, and push to a new
434GitHub repository called "my-demo-app".
435```
436 
437```bash
438git add .
439git commit -m "feat: complete task management demo"
440gh repo create my-demo-app --public --push --source=.
441```
442 
443### Krok 2: Pripojte Vercel
444 
4451. Jdete na [vercel.com](https://vercel.com) a kliknete na "Add New Project."
4462. Importujte prave vytvoreny GitHub repozitar.
4473. Pridejte promenne prostredi:
448   - `NEXT_PUBLIC_SUPABASE_URL`
449   - `NEXT_PUBLIC_SUPABASE_ANON_KEY`
4504. Kliknete na "Deploy."
451 
452```mermaid
453flowchart LR
454    A[GitHub Push] --> B[Vercel Build]
455    B --> C[Automatic Deploy]
456    C --> D[Public URL]
457    D --> E[Global CDN]
458```
459 
460### Krok 3: Konfigurace vlastni domeny (Volitelne)
461 
462Vercel poskytuje bezplatnou URL jako `my-demo-app.vercel.app`. Pro vlastni domenu:
463 
464```
465You: Add the configuration for a custom domain in vercel.json
466```
467 
468### Nahledove nasazeni
469 
470Pokazde, kdyz otevrece Pull Request na GitHubu, Vercel automaticky vytvori **nahledove nasazeni** s unikatni URL. Idealni pro ukazani zmen pred mergem.
471 
472## 7. Optimalizace pro vase demo
473 
474### Vykon
475 
476```
477You: Optimize the app's performance:
4781. Add loading states with Suspense and skeletons
4792. Implement caching with Next.js unstable_cache
4803. Optimize images with next/image
4814. Add SEO metadata for each page
482```
483 
484### Realtime se Supabase
485 
486Funkce, ktera v demech vzdy zaujme, je **realtime**:
487 
488```
489You: Add realtime synchronization for tasks using Supabase Realtime.
490When a user updates a task, all other users should see the change
491in real time without refreshing.
492```
493 
494```typescript
495'use client';
496 
497import { useEffect, useState } from 'react';
498import { createClient } from '@/lib/supabase/client';
499import type { Task } from '@/types/database';
500 
501export function useRealtimeTasks(projectId: string) {
502  const [tasks, setTasks] = useState<Task[]>([]);
503  const supabase = createClient();
504 
505  useEffect(() => {
506    const channel = supabase
507      .channel('tasks-changes')
508      .on(
509        'postgres_changes',
510        {
511          event: '*',
512          schema: 'public',
513          table: 'tasks',
514          filter: `project_id=eq.${projectId}`,
515        },
516        (payload) => {
517          if (payload.eventType === 'INSERT') {
518            setTasks((prev) => [...prev, payload.new as Task]);
519          } else if (payload.eventType === 'UPDATE') {
520            setTasks((prev) =>
521              prev.map((t) =>
522                t.id === payload.new.id ? (payload.new as Task) : t
523              )
524            );
525          } else if (payload.eventType === 'DELETE') {
526            setTasks((prev) =>
527              prev.filter((t) => t.id !== payload.old.id)
528            );
529          }
530        }
531      )
532      .subscribe();
533 
534    return () => {
535      supabase.removeChannel(channel);
536    };
537  }, [projectId, supabase]);
538 
539  return tasks;
540}
541```
542 
543### Tmavy rezim
544 
545```
546You: Add dark mode support with a toggle in the header.
547Use Tailwind dark classes and save the preference in localStorage.
548```
549 
550## 8. Osvedcene postupy pro efektivni Vibecoding
551 
552### 1. Budte ve svych promptech konkretni
553 
554```
555❌ "Make a nice page"
556✅ "Create a landing page with a hero section with a purple-blue gradient,
557   a features section with 3 cards with icons, and an orange CTA button"
558```
559 
560### 2. Poskytnete kontext
561 
562```
563❌ "Add authentication"
564✅ "Add authentication with Supabase Auth. The project uses Next.js 15 App
565   Router with TypeScript. I want email/password login and OAuth with GitHub.
566   Use the SSR pattern with @supabase/ssr"
567```
568 
569### 3. Iterujte v malych krocich
570 
571Nesnazte se postavit vse v jednom promptu. Postupujte inkrementalne:
572 
5731. Zakladni rozlozeni
5742. Jedna funkce najednou
5753. Stylizace a doladeni
5764. Zpracovani chyb
5775. Testovani
578 
579### 4. Kontrolujte vygenerovany kod
580 
581Vibecoding neznamena necist kod. Vzdy kontrolujte:
582 
583- **Bezpecnost**: politiky RLS, validace vstupu, sanitizace dat.
584- **Vykon**: dotazy N+1, zbytecne klientske komponenty.
585- **Osvedcene postupy**: struktura projektu, konvence pojmenovani.
586 
587### 5. Pouzivejte Git strategicky
588 
589```
590You: Commit the changes with a descriptive message after each completed feature.
591```
592 
593To vam umozni se vratit, pokud neco pojde spatne.
594 
595## 9. Naklady: Je to opravdu vse zdarma?
596 
597Zde je rozpad nakladu pro kazdou sluzbu:
598 
599| Sluzba | Bezplatny plan | Kdy platite |
600|---------|-----------|-------------|
601| **Claude Code** | Vyzaduje plan Anthropic (od $20/mesic) nebo API klic | Okamzite, ale hodnota je enormni |
602| **Supabase** | Stedry bezplatny plan (2 projekty, 500MB DB) | Za hranicemi bezplatneho limitu |
603| **Vercel** | Bezplatny plan pro osobni projekty | Pro tymy nebo komercni pouziti |
604| **GitHub** | Zdarma pro verejne i soukrome repozitare | Podnikove funkce |
605 
606> **Poznamka:** Claude Code vyzaduje predplatne nebo API kredity, ale navratnost investice z hlediska rychlosti vyvoje je mimoradna. Pro demo nebo MVP je celkovy naklad v rozmezi $20.
607 
608### Bezplatne alternativy AI
609 
610Pokud chcete udrzet naklady na absolutni nule, muzete pouzit:
611 
612- **Cursor** (bezplatna uroven s omezenimi).
613- **GitHub Copilot** (zdarma pro studenty a open source).
614- **Codeium/Windsurf** (stedra bezplatna uroven).
615 
616## 10. Od dema k produktu: Dalsi kroky
617 
618Jakmile je vase demo zive, zde je jak pokracovat:
619 
620```mermaid
621flowchart TD
622    A[Live Demo] --> B{User Feedback}
623    B --> C[Product Iteration]
624    C --> D[Product-Market Fit]
625    D --> E[Scaling]
626    E --> F[Supabase Pro Plan]
627    E --> G[Vercel Pro Plan]
628    E --> H[Custom Domain]
629```
630 
6311. **Sbirejte zpetnou vazbu**: sdiltte demo s potencialnimi uzivateli a sbirejte nazory.
6322. **Rychle iterujte**: pouzijte vibecoding k implementaci pozadovanych zmen.
6333. **Monitorujte metriky**: Vercel Analytics a Supabase Dashboard vam poskytuji zasadni data.
6344. **Skalujte, kdyz je to potreba**: prejdete na placene plany az kdyz jste overili poptavku.
635 
636 
637## Zaver
638 
639Vibecoding s Claude Code, Supabase a Vercel predstavuje mocnou kombinaci pro stavbu dem a MVP v rekordnim case. Co drive trvalo tydny vyvoje, lze nyni zvladnout za pouhych par hodin s prekvapive vysokou urovni kvality.
640 
641Klicem je pristupovat k vibecoding se spravnym nastavenim mysli: nejde o to "neumet programovat", ale o **zesilovani vasich schopnosti** pomoci AI nastroju. Cim vice vite o zakladnich technologiich (React, SQL, autentizace, nasazeni), tim efektivneji budete ridit AI agenta smerem k pozadovanemu vysledku.
642 
643Budoucnost vyvoje softwaru je tady a naklady na zacatek nebyly nikdy nizsi. Vytvorte sve demo, overte ho s realnymi uzivateli a postavte dalsi skvely produkt.
644 
645> **Kontrolni seznam pro vase prvni demo:**
646>
647> - [x] Claude Code nainstalovany a nakonfigurovany
648> - [x] Supabase projekt vytvoren s databazovym schematem
649> - [x] Next.js projekt inicializovan s shadcn/ui
650> - [x] Autentizace nakonfigurovana
651> - [x] Plny CRUD implementovan
652> - [x] Moderni a responzivni UI
653> - [x] Nasazeno na Vercel
654> - [x] Sdilitelna URL pripravena pro zpetnou vazbu
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