1. Ves a supabase.com i crea un compte gratuït

2. Crea un nou projecte (dona-li un nom, ex: "porcsrebels")

3. A l'esquerra: Settings → API

4. Copia Project URL i anon public key

5. Pega'ls als camps de dalt i fes "Guardar"

6. A Supabase, ves a SQL Editor i executa el SQL de sota

7. A Storage, crea un bucket anomenat route-photos (Public)

CREATE TABLE routes (
  id                 uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  created_at         timestamptz DEFAULT now(),
  rider_name         text NOT NULL,
  name               text NOT NULL,
  description        text,
  distance_km        numeric,
  duration_s         integer,
  duration_estimated boolean DEFAULT false,
  elevation_gain     numeric,
  elevation_loss     numeric,
  max_elevation      numeric,
  min_elevation      numeric,
  avg_speed          numeric,
  max_speed          numeric,
  gpx_data           text,
  cities             text[],
  city_coords        text,
  photos             text[]
);

-- Permisos públics de lectura/escriptura (per a ús entre amics)
ALTER TABLE routes ENABLE ROW LEVEL SECURITY;
CREATE POLICY "public read"  ON routes FOR SELECT USING (true);
CREATE POLICY "public insert" ON routes FOR INSERT WITH CHECK (true);
CREATE POLICY "public delete" ON routes FOR DELETE USING (true);