* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-sans); background: var(--bg-secondary); color: var(--text-primary); min-height: 100vh; }
.login-container { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 2rem; }
.login-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem; width: 100%; max-width: 400px; box-shadow: var(--shadow); }
.login-title { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 1.5rem; text-align: center; color: var(--accent); }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-size: 0.875rem; color: var(--text-secondary); }
.form-group input { width: 100%; padding: 0.625rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; background: var(--bg-primary); color: var(--text-primary); }
.form-group input:focus { outline: none; border-color: var(--accent); }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.625rem 1.25rem; border-radius: var(--radius); font-size: 0.875rem; font-weight: 500; cursor: pointer; border: none; text-decoration: none; transition: all 0.2s; }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-escura); }
.btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border); }
.btn-full { width: 100%; }
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: 0.875rem; }
.alert-error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.dashboard-container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
.dashboard-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.dashboard-header h1 { font-family: var(--font-display); font-size: 1.5rem; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.stat-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; text-align: center; }
.stat-label { display: block; font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.stat-value { display: block; font-size: 2rem; font-weight: 700; color: var(--accent); font-family: var(--font-display); }

/* ---------- Site público ---------- */
.site-header { background: var(--bg-primary); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.brand { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--text-primary); text-decoration: none; }
.brand::after { content: "/compare"; color: var(--accent); font-weight: 400; font-size: 0.875rem; }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.9375rem; }
.nav-links a:hover { color: var(--accent); }
.theme-toggle { background: transparent; border: 1px solid var(--border); color: var(--text-primary); border-radius: var(--radius); padding: 0.5rem 0.75rem; cursor: pointer; font-size: 1rem; }
.theme-toggle:hover { border-color: var(--accent); }

/* Hero */
.hero { background: linear-gradient(135deg, var(--accent-escura), var(--accent)); color: white; padding: 4rem 2rem; text-align: center; }
.hero-content { max-width: 800px; margin: 0 auto; }
.hero-kicker { display: inline-block; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 1rem; color: rgba(255,255,255,0.9); }
.hero h1 { font-family: var(--font-display); font-size: 3rem; margin-bottom: 1rem; line-height: 1.2; }
.hero p { font-size: 1.125rem; margin-bottom: 2rem; opacity: 0.95; }
.hero-search { display: flex; gap: 0.5rem; max-width: 600px; margin: 0 auto; }
.hero-search input { flex: 1; padding: 0.75rem 1rem; border-radius: var(--radius); border: none; font-size: 1rem; }
.hero-search button { padding: 0.75rem 1.5rem; }

/* Seções genéricas */
.section-header { display: flex; justify-content: space-between; align-items: center; margin: 3rem 0 1.5rem; }
.section-header h2 { font-family: var(--font-display); font-size: 1.5rem; color: var(--text-primary); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }

/* Categorias */
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.category-card { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; padding: 1.5rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-primary); color: var(--text-primary); text-decoration: none; transition: all 0.2s; }
.category-card:hover { border-color: var(--accent); background: var(--bg-secondary); }
.category-icon { font-size: 2rem; }
.category-name { font-weight: 600; font-size: 0.9375rem; }

/* Produtos - grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; }
.product-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.2s; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-image { width: 100%; height: 200px; object-fit: cover; background: var(--bg-secondary); }
.product-info { padding: 1rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.product-category { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--accent); font-weight: 600; }
.product-name { font-family: var(--font-display); font-size: 1.125rem; color: var(--text-primary); margin: 0; line-height: 1.3; }
.product-desc { font-size: 0.875rem; color: var(--text-secondary); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.price-row { display: flex; gap: 0.75rem; margin-top: auto; }
.price { display: flex; align-items: baseline; gap: 0.25rem; font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.price-label { font-size: 0.75rem; font-weight: 500; color: var(--text-secondary); text-transform: uppercase; }
.price-ml { color: var(--accent); }
.price-amazon { color: var(--accent-suave); }
.product-actions { display: flex; gap: 0.5rem; margin-top: auto; }
.btn-sm { padding: 0.5rem 0.75rem; font-size: 0.8125rem; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(22, 163, 74, 0.05); }

/* Vazio */
.vazio { text-align: center; padding: 3rem; color: var(--text-secondary); }

/* Páginas de produto/ comparacao / buscar / cadastro */
.page-header { background: var(--bg-primary); border-bottom: 1px solid var(--border); padding: 1rem 0; }
.page-header-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.comparacao-section, .buscar-section, .cadastro-section { padding: 3rem 0; }
.comparacao-section h1, .buscar-section h1, .cadastro-section h1 { font-family: var(--font-display); font-size: 2rem; margin-bottom: 0.5rem; }
.subtitulo { font-size: 1.125rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.categoria { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 2rem; }

/* Comparação lado a lado */
.comparison-table { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.offer-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg-primary); display: flex; flex-direction: column; }
.offer-header { padding: 1rem; text-align: center; }
.platform-badge { display: inline-block; padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.8125rem; font-weight: 600; color: white; }
.platform-ml { background: var(--accent); }
.platform-amazon { background: #ff9900; }
.offer-body { padding: 1rem; flex: 1; display: flex; flex-direction: column; gap: 0.5rem; }
.price-big { font-size: 2rem; font-weight: 800; color: var(--text-primary); }
.price-original { font-size: 1rem; text-decoration: line-through; color: var(--text-secondary); margin-left: 0.5rem; }
.desconto { color: var(--accent); font-weight: 700; margin-left: 0.5rem; font-size: 0.875rem; }
.frete { font-size: 0.875rem; color: var(--text-secondary); }
.avaliacao { display: flex; align-items: center; gap: 0.25rem; font-size: 0.875rem; }
.stars { color: #f59e0b; font-weight: 700; }
.num { color: var(--text-secondary); }
.vendedor { font-size: 0.8125rem; color: var(--text-secondary); }
.offer-footer { padding: 1rem; border-top: 1px solid var(--border); }
.btn-full { width: 100%; }

/* Busca */
.busca-form { display: flex; gap: 0.5rem; max-width: 600px; margin: 2rem 0; }
.busca-form input { flex: 1; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; background: var(--bg-primary); color: var(--text-primary); }
.resultados-header { margin: 2rem 0; }
.resultados-header h2 { font-family: var(--font-display); font-size: 1.5rem; color: var(--text-primary); }

/* Cadastro */
.cadastro-card { max-width: 480px; margin: 0 auto; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.cadastro-card h1 { font-family: var(--font-display); font-size: 1.75rem; margin-bottom: 0.5rem; text-align: center; }
.cadastro-card p { text-align: center; color: var(--text-secondary); margin-bottom: 2rem; }
.cadastro-form { display: flex; flex-direction: column; gap: 1rem; }
.form-check { display: flex; align-items: flex-start; gap: 0.5rem; }
.form-check label { font-size: 0.9375rem; color: var(--text-primary); cursor: pointer; margin-bottom: 0; }
.cadastro-link { text-align: center; margin-top: 1.5rem; font-size: 0.9375rem; color: var(--text-secondary); }
.cadastro-link a { color: var(--accent); text-decoration: none; }
.cadastro-link a:hover { text-decoration: underline; }

/* Alertas */
.alerta { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; margin-top: 2rem; text-align: center; color: var(--text-secondary); }

/* Responsivo */
@media (max-width: 640px) {
    .header-container { padding: 1rem; flex-direction: column; align-items: stretch; }
    .nav-links { justify-content: center; }
    .hero h1 { font-size: 2rem; }
    .hero-search { flex-direction: column; }
    .product-actions { flex-direction: column; }
    .comparison-table { grid-template-columns: 1fr; }
    .cadastro-card { padding: 1.5rem; }
}

/* ---------- Admin: produtos ---------- */
.admin-container { max-width: 1400px; margin: 0 auto; padding: 2rem; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; flex-wrap: wrap; gap: 1rem; }
.admin-header-left { display: flex; align-items: center; gap: 1rem; }
.admin-header h1 { font-family: var(--font-display); font-size: 1.75rem; color: var(--text-primary); margin: 0; }
.admin-header-right { display: flex; gap: 0.5rem; }

.filtros-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 2rem; }
.filtros-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; align-items: end; }
.filtro-grupo { display: flex; flex-direction: column; gap: 0.5rem; }
.filtro-grupo label { font-size: 0.875rem; color: var(--text-secondary); font-weight: 600; }
.filtro-grupo select, .filtro-grupo input { padding: 0.625rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; background: var(--bg-primary); color: var(--text-primary); }
.filtro-botoes { display: flex; gap: 0.5rem; grid-column: 1 / -1; }

.tabela-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.tabela-header { display: flex; justify-content: space-between; align-items: center; padding: 1.5rem; border-bottom: 1px solid var(--border); }
.tabela-header .total { font-size: 0.9375rem; color: var(--text-secondary); font-weight: 600; }
.ordenacao { display: flex; gap: 0.75rem; }
.ordenacao-link { font-size: 0.875rem; color: var(--text-secondary); text-decoration: none; }
.ordenacao-link:hover { color: var(--accent); }

.tabela { width: 100%; border-collapse: collapse; }
.tabela th { text-align: left; padding: 0.75rem 1rem; border-bottom: 2px solid var(--border); font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; }
.tabela td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.9375rem; color: var(--text-primary); }
.tabela tr:hover { background: var(--bg-secondary); }

.produto-linha { display: flex; align-items: center; gap: 0.75rem; }
.produto-imagem-mini { width: 40px; height: 40px; object-fit: cover; border-radius: 4px; background: var(--bg-secondary); }
.produto-nome { font-weight: 600; }

.categoria-badge { display: inline-block; padding: 0.25rem 0.6rem; border-radius: 12px; font-size: 0.75rem; font-weight: 600; background: var(--bg-secondary); color: var(--accent); }

.btn-toggle { padding: 0.375rem 0.75rem; border-radius: 20px; font-size: 0.8125rem; font-weight: 600; border: none; cursor: pointer; }
.btn-toggle.ativo { background: var(--accent-suave); color: white; }
.btn-toggle.inativo { background: var(--bg-secondary); color: var(--text-secondary); }

.acoes { display: flex; gap: 0.5rem; }
.btn-icone { background: none; border: none; cursor: pointer; font-size: 1.1rem; padding: 0.25rem; color: var(--text-secondary); }
.btn-icone:hover { color: var(--accent); }
.btn-icone-excluir:hover { color: #dc2626; }

.paginacao { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-top: 1px solid var(--border); }
.pagina-atual { font-size: 0.9375rem; color: var(--text-secondary); font-weight: 600; }

.vazio { text-align: center; padding: 3rem; color: var(--text-secondary); }

.formulario-card { max-width: 700px; margin: 0 auto; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.form-linha { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Responsivo admin */
@media (max-width: 768px) {
    .admin-container { padding: 1rem; }
    .filtros-form { grid-template-columns: 1fr; }
    .tabela-header { flex-direction: column; gap: 1rem; align-items: stretch; }
    .ordenacao { justify-content: center; }
    .paginacao { flex-direction: column; gap: 0.75rem; align-items: center; }
    .tabela { font-size: 0.875rem; }
    .tabela th, .tabela td { padding: 0.5rem; }
}

/* Menu do visitante */
.usuario-menu { border-top: 1px solid var(--border); background: var(--bg-primary); }
.usuario-menu .container { display: flex; justify-content: flex-end; gap: 0.5rem; }