/* =========================================================
   MercadoCerto — design tokens
   Paleta: branco / cinza, acento preto. Tipografia utilitária
   com uma display condensada para números grandes (preços, totais).
   ========================================================= */

:root {
  /* cores */
  --branco:        #ffffff;
  --cinza-50:       #fafafa;
  --cinza-100:      #f2f2f2;
  --cinza-150:      #ececec;
  --cinza-200:      #e4e4e4;
  --cinza-300:      #d1d1d1;
  --cinza-400:      #a8a8a8;
  --cinza-500:      #7a7a7a;
  --cinza-600:      #555555;
  --cinza-700:      #383838;
  --cinza-900:      #161616;
  --preto:          #0a0a0a;

  --linha:          var(--cinza-200);
  --superficie:     var(--branco);
  --fundo:          var(--cinza-50);

  --aviso-bg:       #fdf3e8;
  --aviso-fg:       #8a5a1f;
  --erro-bg:        #fbeaea;
  --erro-fg:        #9a2e2e;
  --ok-bg:          #eaf3ea;
  --ok-fg:          #2f6b3a;

  /* tipografia */
  --fonte-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, sans-serif;
  --fonte-num: var(--fonte-base);

  /* layout */
  --largura-max: 720px;
  --altura-menu: 60px;
  --altura-rodape: 64px;
  --raio: 14px;
  --raio-sm: 9px;
  --sombra: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px -12px rgba(0,0,0,.10);
  --transicao: 160ms cubic-bezier(.4,0,.2,1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--fonte-base);
  background: var(--fundo);
  color: var(--preto);
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.45;
  overscroll-behavior-y: contain;
}

h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -.01em; }

button { font-family: inherit; }

.icon {
  width: 1.25em;
  height: 1.25em;
  display: inline-block;
  vertical-align: -0.2em;
  flex-shrink: 0;
}

/* =================== LAYOUT GERAL =================== */

#app {
  display: none;
  min-height: 100vh;
}
#app.ativo { display: block; }

.conteudo {
  max-width: var(--largura-max);
  margin: 0 auto;
  padding: calc(var(--altura-menu) + 18px) 16px calc(var(--altura-rodape) + 28px);
  min-height: 100vh;
}

/* =================== MENU FIXO =================== */

.menu-topo {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--altura-menu);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-bottom: 1px solid var(--linha);
  z-index: 100;
  display: flex;
  align-items: center;
}
.menu-topo .conteudo-menu {
  max-width: var(--largura-max);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}
.marca {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16.5px;
  letter-spacing: -.01em;
}
.marca .icon { width: 22px; height: 22px; }

.menu-acoes { display: flex; align-items: center; gap: 6px; }

.btn-icone {
  position: relative;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: none;
  background: transparent;
  display: flex; align-items: center; justify-content: center;
  color: var(--preto);
  cursor: pointer;
  transition: background var(--transicao);
}
.btn-icone:hover { background: var(--cinza-100); }
.btn-icone:active { background: var(--cinza-200); }

.bolha-contagem {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 16px; height: 16px;
  border-radius: 999px;
  background: var(--preto);
  color: var(--branco);
  font-size: 10px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 0 3px;
  border: 1.5px solid var(--branco);
}

/* indicador offline */
.faixa-offline {
  position: fixed;
  top: var(--altura-menu);
  left: 0; right: 0;
  background: var(--cinza-900);
  color: var(--branco);
  font-size: 12.5px;
  font-weight: 600;
  text-align: center;
  padding: 7px 12px;
  z-index: 99;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.faixa-offline.ativa { display: flex; }
.faixa-offline .icon { width: 15px; height: 15px; }

/* =================== RODAPÉ FIXO =================== */

.rodape-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--altura-rodape);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px) saturate(1.1);
  -webkit-backdrop-filter: blur(10px) saturate(1.1);
  border-top: 1px solid var(--linha);
  z-index: 100;
  display: flex;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.rodape-nav .conteudo-rodape {
  max-width: var(--largura-max);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: stretch;
}
.item-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border: none;
  background: none;
  color: var(--cinza-500);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  transition: color var(--transicao);
}
.item-nav .icon { width: 22px; height: 22px; transition: transform var(--transicao); }
.item-nav.ativo { color: var(--preto); }
.item-nav.ativo .icon { transform: translateY(-1px); }
.item-nav.ativo::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 28px; height: 2.5px;
  background: var(--preto);
  border-radius: 0 0 4px 4px;
}
.pontinho-nav {
  position: absolute;
  top: 4px; right: calc(50% - 17px);
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cinza-700);
  border: 1.5px solid var(--branco);
}

/* =================== CARTÕES E SEÇÕES =================== */

.secao { margin-bottom: 26px; }
.secao-titulo {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}
.secao-titulo h2 { font-size: 17px; }
.secao-titulo .ver-link {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--cinza-500);
  text-decoration: none;
  cursor: pointer;
  background: none; border: none;
}

.cartao {
  background: var(--superficie);
  border: 1px solid var(--linha);
  border-radius: var(--raio);
  box-shadow: var(--sombra);
}

.cartao-pad { padding: 18px; }

/* linha de item genérica (estoque, lista de compras) */
.linha-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--linha);
  background: var(--superficie);
  transition: background var(--transicao);
}
.linha-item:last-child { border-bottom: none; border-radius: 0 0 var(--raio) var(--raio); }
.linha-item:first-child { border-radius: var(--raio) var(--raio) 0 0; }
.linha-item:only-child { border-radius: var(--raio); }

.icone-categoria {
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--cinza-100);
  display: flex; align-items: center; justify-content: center;
  color: var(--cinza-700);
  flex-shrink: 0;
}
.icone-categoria .icon { width: 19px; height: 19px; }

.info-item { flex: 1; min-width: 0; }
.info-item .nome {
  font-weight: 600;
  font-size: 14.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.info-item .meta {
  font-size: 12px;
  color: var(--cinza-500);
  margin-top: 1px;
}

.etiqueta {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .03em;
  padding: 2px 7px;
  border-radius: 999px;
  display: inline-block;
}
.etiqueta-ok { background: var(--ok-bg); color: var(--ok-fg); }
.etiqueta-aviso { background: var(--aviso-bg); color: var(--aviso-fg); }
.etiqueta-erro { background: var(--erro-bg); color: var(--erro-fg); }

/* controles +/- de quantidade */
.controle-qtd {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1.5px solid var(--cinza-200);
  border-radius: 999px;
  overflow: hidden;
  flex-shrink: 0;
}
.controle-qtd button {
  width: 30px; height: 30px;
  border: none;
  background: var(--cinza-50);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--preto);
}
.controle-qtd button:active { background: var(--cinza-200); }
.controle-qtd .valor {
  min-width: 30px;
  text-align: center;
  font-weight: 700;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

/* checkbox circular (lista de compras) */
.check-circulo {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1.8px solid var(--cinza-300);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  color: transparent;
  background: var(--branco);
  transition: all var(--transicao);
}
.check-circulo .icon { width: 14px; height: 14px; }
.check-circulo.marcado {
  background: var(--preto);
  border-color: var(--preto);
  color: var(--branco);
}

.linha-item.comprado .nome { text-decoration: line-through; color: var(--cinza-400); }
.linha-item.comprado { background: var(--cinza-50); }

/* anel de progresso de estoque (assinatura visual) */
.anel-estoque { position: relative; width: 38px; height: 38px; flex-shrink: 0; }
.anel-estoque svg { transform: rotate(-90deg); }
.anel-estoque circle { fill: none; stroke-width: 3; }
.anel-fundo { stroke: var(--cinza-150); }
.anel-progresso { stroke: var(--preto); stroke-linecap: round; transition: stroke-dashoffset .4s ease; }
.anel-estoque.baixo .anel-progresso { stroke: var(--aviso-fg); }
.anel-estoque.vazio .anel-progresso { stroke: var(--erro-fg); }

/* =================== BOTÕES =================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14.5px;
  border: none;
  cursor: pointer;
  transition: transform var(--transicao), opacity var(--transicao), background var(--transicao);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primario { background: var(--preto); color: var(--branco); }
.btn-primario:hover { background: var(--cinza-700); }
.btn-secundario { background: var(--cinza-100); color: var(--preto); }
.btn-secundario:hover { background: var(--cinza-200); }
.btn-fantasma { background: transparent; color: var(--cinza-600); border: 1.5px solid var(--cinza-200); }
.btn-perigo { background: var(--erro-bg); color: var(--erro-fg); }
.btn-bloco { width: 100%; }
.btn-pequeno { height: 36px; padding: 0 14px; font-size: 13px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.fab {
  position: fixed;
  right: 18px;
  bottom: calc(var(--altura-rodape) + 18px);
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--preto);
  color: var(--branco);
  border: none;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px -8px rgba(0,0,0,.35);
  cursor: pointer;
  z-index: 90;
  transition: transform var(--transicao);
}
.fab:active { transform: scale(.93); }
.fab .icon { width: 24px; height: 24px; }

/* =================== FORMULÁRIOS =================== */

.campo { margin-bottom: 16px; }
.campo label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--cinza-600);
  margin-bottom: 6px;
  letter-spacing: .01em;
}
.campo input, .campo select, .campo textarea {
  width: 100%;
  height: 48px;
  border: 1.5px solid var(--cinza-200);
  border-radius: var(--raio-sm);
  padding: 0 14px;
  font-size: 15px;
  font-family: inherit;
  background: var(--branco);
  color: var(--preto);
  transition: border-color var(--transicao);
}
.campo textarea { height: auto; padding: 12px 14px; resize: vertical; }
.campo input:focus, .campo select:focus, .campo textarea:focus {
  outline: none;
  border-color: var(--preto);
}
.linha-dupla { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.linha-tripla { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 12px; }

.campo-senha { position: relative; }
.alternar-senha {
  position: absolute;
  right: 6px; top: 30px;
  width: 36px; height: 36px;
  border: none; background: none;
  display: flex; align-items: center; justify-content: center;
  color: var(--cinza-500);
  cursor: pointer;
}

/* =================== AUTENTICAÇÃO =================== */

.tela-auth {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--fundo);
}
.cartao-auth {
  width: 100%;
  max-width: 380px;
}
.auth-marca {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.auth-marca .icone-marca {
  width: 56px; height: 56px;
  border-radius: 18px;
  background: var(--preto);
  display: flex; align-items: center; justify-content: center;
  color: var(--branco);
}
.auth-marca .icone-marca .icon { width: 28px; height: 28px; }
.auth-marca h1 { font-size: 20px; }
.auth-marca p { color: var(--cinza-500); font-size: 13px; margin: 2px 0 0; }

.alternar-auth {
  text-align: center;
  margin-top: 18px;
  font-size: 13.5px;
  color: var(--cinza-600);
}
.alternar-auth button {
  background: none; border: none;
  font-weight: 700;
  color: var(--preto);
  cursor: pointer;
  padding: 0 2px;
}

.mensagem-erro {
  background: var(--erro-bg);
  color: var(--erro-fg);
  font-size: 13px;
  font-weight: 600;
  padding: 11px 14px;
  border-radius: var(--raio-sm);
  margin-bottom: 16px;
  display: none;
  align-items: center;
  gap: 8px;
}
.mensagem-erro.ativa { display: flex; }
.mensagem-erro .icon { width: 16px; height: 16px; flex-shrink: 0; }

/* =================== CALCULADORA =================== */

.painel-total {
  background: var(--preto);
  color: var(--branco);
  border-radius: var(--raio);
  padding: 22px 20px;
  margin-bottom: 18px;
}
.painel-total .rotulo {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--cinza-400);
  font-weight: 700;
}
.painel-total .valor-total {
  font-family: var(--fonte-num);
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
.painel-total .sub {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.18);
  font-size: 12.5px;
  color: var(--cinza-300);
}
.painel-total .sub strong { color: var(--branco); font-variant-numeric: tabular-nums; }

.linha-calc {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--linha);
}
.linha-calc:last-child { border-bottom: none; }
.linha-calc input[type=number] {
  width: 64px;
  height: 38px;
  text-align: center;
  border: 1.5px solid var(--cinza-200);
  border-radius: 8px;
  font-weight: 700;
  font-size: 14px;
}
.linha-calc .preco-input {
  width: 90px;
  height: 38px;
  border: 1.5px solid var(--cinza-200);
  border-radius: 8px;
  padding: 0 8px;
  font-size: 14px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.linha-calc .subtotal {
  min-width: 70px;
  text-align: right;
  font-weight: 700;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.comparador {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.comparador .opcao {
  border: 1.5px solid var(--cinza-200);
  border-radius: var(--raio-sm);
  padding: 14px;
  text-align: center;
}
.comparador .opcao.melhor { border-color: var(--preto); background: var(--cinza-50); }
.comparador .opcao .preco-unit {
  font-size: 20px;
  font-weight: 800;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
.comparador .opcao .selo {
  display: inline-block;
  margin-top: 8px;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  background: var(--preto);
  color: var(--branco);
  padding: 2px 8px;
  border-radius: 999px;
}

/* =================== ESTADO VAZIO =================== */

.vazio {
  text-align: center;
  padding: 50px 24px;
  color: var(--cinza-500);
}
.vazio .icon { width: 44px; height: 44px; color: var(--cinza-300); margin-bottom: 14px; }
.vazio h3 { font-size: 15px; color: var(--cinza-700); margin-bottom: 4px; }
.vazio p { font-size: 13px; margin: 0; }

/* =================== ESTATÍSTICAS (dashboard) =================== */

.grade-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.stat {
  background: var(--superficie);
  border: 1px solid var(--linha);
  border-radius: var(--raio-sm);
  padding: 14px 10px;
  text-align: center;
}
.stat .num {
  font-size: 22px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.stat .rotulo {
  font-size: 11px;
  color: var(--cinza-500);
  font-weight: 600;
  margin-top: 2px;
}
.stat.aviso .num { color: var(--aviso-fg); }
.stat.erro .num { color: var(--erro-fg); }

/* filtros de chip */
.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 16px; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex-shrink: 0;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1.5px solid var(--cinza-200);
  background: var(--branco);
  font-size: 13px;
  font-weight: 700;
  color: var(--cinza-600);
  cursor: pointer;
  transition: all var(--transicao);
}
.chip.ativo { background: var(--preto); border-color: var(--preto); color: var(--branco); }

/* =================== MODAL =================== */

.modal-fundo {
  position: fixed; inset: 0;
  background: rgba(10,10,10,.45);
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
}
.modal-fundo.ativo { display: flex; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }

.modal-painel {
  background: var(--branco);
  width: 100%;
  max-width: var(--largura-max);
  border-radius: 22px 22px 0 0;
  padding: 22px 20px calc(env(safe-area-inset-bottom,0) + 22px);
  max-height: 88vh;
  overflow-y: auto;
  animation: subir .22s cubic-bezier(.32,.72,0,1);
}
@keyframes subir { from { transform: translateY(100%) } to { transform: translateY(0) } }

@media (min-width: 640px) {
  .modal-fundo { align-items: center; }
  .modal-painel { border-radius: var(--raio); max-width: 480px; }
}

.modal-cabeca {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.modal-cabeca h3 { font-size: 17px; }
.modal-cabeca button {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--cinza-100);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--cinza-700);
}
.modal-cabeca .icon { width: 16px; height: 16px; }

.barra-puxar {
  width: 36px; height: 4px;
  background: var(--cinza-300);
  border-radius: 999px;
  margin: 0 auto 16px;
}

.acoes-modal { display: flex; gap: 10px; margin-top: 6px; }
.acoes-modal .btn { flex: 1; }

/* =================== TOAST =================== */

.toast-container {
  position: fixed;
  bottom: calc(var(--altura-rodape) + 14px);
  left: 0; right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 300;
  pointer-events: none;
}
.toast {
  background: var(--cinza-900);
  color: var(--branco);
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 20px -6px rgba(0,0,0,.4);
  animation: toast-up .25s ease;
}
.toast .icon { width: 16px; height: 16px; }
.toast.erro { background: var(--erro-fg); }
.toast.ok { background: var(--ok-fg); }
@keyframes toast-up { from { opacity: 0; transform: translateY(8px) } to { opacity: 1; transform: translateY(0) } }

/* =================== UTILITÁRIOS =================== */

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.entre { justify-content: space-between; }
.centro { align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.texto-cinza { color: var(--cinza-500); }
.texto-pequeno { font-size: 12.5px; }
.mt-0 { margin-top: 0; }
.oculto { display: none !important; }

.spinner {
  width: 18px; height: 18px;
  border: 2px solid var(--cinza-200);
  border-top-color: var(--preto);
  border-radius: 50%;
  animation: girar .7s linear infinite;
}
@keyframes girar { to { transform: rotate(360deg) } }

/* loading da página inteira */
.tela-carregando {
  position: fixed; inset: 0;
  background: var(--branco);
  display: flex; align-items: center; justify-content: center;
  z-index: 500;
}

/* =================== RESPONSIVO =================== */

@media (max-width: 380px) {
  .linha-tripla { grid-template-columns: 1fr; }
  .grade-stats { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .stat { padding: 10px 6px; }
  .stat .num { font-size: 18px; }
}

@media (min-width: 860px) {
  .conteudo { padding-left: 0; padding-right: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}