:root {
  --cor-principal: #ff6600;
  --cor-secundaria: #333;
  --cor-fundo: #fafafa;
  --cor-branca: #fff;
  --largura-max: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: var(--cor-fundo);
  color: var(--cor-secundaria);
  line-height: 1.6;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--cor-branca);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--cor-principal);
}

.nav a {
  margin: 0 0.5rem;
  text-decoration: none;
  color: var(--cor-secundaria);
  font-weight: 500;
}

.nav a:hover {
  color: var(--cor-principal);
}

/* Hero */
.hero {
  background: url("https://via.placeholder.com/1200x500") center/cover no-repeat;
  height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cor-branca);
  text-align: center;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  top:0; left:0; right:0; bottom:0;
  background: rgba(0,0,0,0.5);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

/* Botão padrão */
.btn {
  background: var(--cor-principal);
  color: var(--cor-branca);
  padding: 0.6rem 1.2rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s ease;
}

.btn:hover {
  background: #e65500;
}

/* Ofertas */
.ofertas {
  padding: 3rem 1rem;
  max-width: var(--largura-max);
  margin: auto;
}

.ofertas h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.card {
  background: var(--cor-branca);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  padding: 1rem;
  text-align: center;
}

.card img {
  max-width: 100%;
  border-radius: 5px;
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

/* Categorias */
.categorias {
  padding: 3rem 1rem;
  background: var(--cor-branca);
}

.categorias h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.categoria-lista {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.categoria-lista button {
  background: var(--cor-principal);
  color: var(--cor-branca);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.categoria-lista button:hover {
  transform: scale(1.05);
}

/* Contato */
.contato {
  padding: 3rem 1rem;
  text-align: center;
}

.contato h2 {
  margin-bottom: 1rem;
}

/* Footer */
.footer {
  padding: 1.5rem;
  text-align: center;
  background: var(--cor-secundaria);
  color: var(--cor-branca);
}

.footer .social a {
  color: var(--cor-branca);
  margin: 0 0.5rem;
  text-decoration: none;
}

.footer .social a:hover {
  text-decoration: underline;
}

/* Responsividade */
@media (min-width: 600px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .hero h1 {
    font-size: 3rem;
  }
}