/* ============================================================
   REI MIX — RESPONSIVIDADE ULTRA-POLIDA v3.0
   Mobile-first, touch-friendly, zero overflow horizontal
   ============================================================ */

/* ── PREVENÇÃO DE OVERFLOW GLOBAL ───────────────────────────── */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

/* ── TABLET LARGO (< 1100px) ─────────────────────────────────── */
@media (max-width: 1100px) {
  .container { padding: 0 32px; }
  .produtos-header { flex-direction: column; align-items: flex-start; gap: 20px; }
  .produtos-grid { gap: 28px; }
  .produto-card-body { padding: 30px 24px; }
  .regioes-inner { gap: 48px; }
  .wa-section { gap: 40px; }
  .footer-main { grid-template-columns: 1.2fr 1fr 1fr; gap: 36px; }
}

/* ── TABLET (< 900px) ────────────────────────────────────────── */
@media (max-width: 900px) {
  .container { padding: 0 24px; }

  /* Header */
  .header-nav, .header-cta { display: none; }
  .menu-toggle { display: flex; }

  /* Mobile Nav Drawer */
  .mobile-nav {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    height: calc(100dvh - 70px);
    background: rgba(4, 18, 19, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 28px 24px 40px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform .35s cubic-bezier(0.16, 1, 0.3, 1), opacity .3s ease, visibility .35s;
    overflow-y: auto;
    z-index: 998;
  }
  .mobile-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .mobile-nav a {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--branco);
    text-decoration: none;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: color .2s ease;
  }
  .mobile-nav a:hover, .mobile-nav a.active {
    color: var(--teal-light);
  }
  .mobile-nav .btn-whatsapp {
    margin-top: 16px;
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
    font-size: .95rem;
  }

  /* Hero */
  .hero {
    min-height: 100svh;
    min-height: 100vh;
    padding-top: 110px;
    padding-bottom: 60px;
    align-items: flex-end;
  }
  .hero-bg {
    background-position: 68% center;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero-title {
    font-size: clamp(2.3rem, 6vw, 3.6rem);
  }
  .hero-scroll, .hero-badge, .hero-grain {
    display: none;
  }

  /* Diferenciais */
  .diferenciais-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .diferencial-item {
    padding: 32px 24px;
  }

  /* Produtos */
  .produtos { padding: 80px 0; }
  .produtos-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .produto-card-media {
    height: 260px;
  }
  .produto-card-body {
    padding: 32px 24px;
  }

  /* Serviços */
  .servicos { padding: 80px 0; }
  .servicos-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .servico-card-img {
    height: 220px;
  }
  .pacote-especial {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 28px;
  }

  /* Regiões */
  .regioes { padding: 80px 0; }
  .regioes-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .regioes-estados {
    grid-template-columns: repeat(2, 1fr);
  }

  /* WhatsApp / Contato */
  .orcamento { padding: 80px 0; }
  .wa-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Footer */
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 48px 0 36px;
  }
}

/* ── SMARTPHONES & MOBILE PADRÃO (< 640px) ─────────────────────── */
@media (max-width: 640px) {
  .container { padding: 0 18px; }

  /* Header */
  .site-header { padding: 12px 0; }
  .header-logo img { width: 36px; height: 36px; }
  .logo-text { font-size: 1.15rem; }
  .logo-text span { font-size: .56rem; }

  /* Hero */
  .hero {
    min-height: 100svh;
    min-height: 100vh;
    padding-top: 90px;
    padding-bottom: 40px;
    align-items: flex-end;
  }
  .hero-bg {
    background-position: 72% center;
  }
  .hero-eyebrow {
    gap: 8px;
    margin-bottom: 16px;
  }
  .hero-eyebrow-line { width: 28px; }
  .hero-eyebrow-text { font-size: .66rem; letter-spacing: .12em; }
  .hero-title {
    font-size: clamp(2rem, 8.5vw, 2.7rem);
    line-height: 1.06;
    margin-bottom: 14px;
  }
  .hero-subtitle {
    font-size: .92rem;
    line-height: 1.6;
    margin-bottom: 24px;
  }
  .hero-ctas {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
  }
  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
    padding: 14px 18px;
    font-size: .88rem;
  }
  .hero-regioes-header {
    font-size: .62rem;
    margin-bottom: 8px;
  }
  .hero-regioes {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
  }
  .hero-regiao-tag {
    font-size: .62rem;
    padding: 4px 9px;
  }

  /* Seções Gerais */
  .diferenciais, .produtos, .servicos, .regioes, .orcamento {
    padding: 56px 0;
  }
  .section-label { font-size: .68rem; margin-bottom: 6px; }
  .section-title { font-size: clamp(1.6rem, 6.5vw, 2.1rem); line-height: 1.12; }
  .section-desc { font-size: .9rem; line-height: 1.65; }

  /* Diferenciais */
  .diferenciais-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .diferencial-item {
    padding: 26px 20px;
  }
  .diferencial-item::after { display: none; }

  /* Produtos */
  .produtos-header { margin-bottom: 36px; }
  .produto-card-media { height: 220px; }
  .produto-card-badge { top: 12px; left: 12px; font-size: .62rem; padding: 4px 10px; }
  .produto-card-number { top: 8px; right: 14px; font-size: 1.8rem; }
  .produto-card-body { padding: 24px 18px; }
  .produto-card-title { font-size: 1.5rem; }
  .produto-card-subtitle { font-size: .66rem; margin-bottom: 12px; }
  .produto-card-desc { font-size: .88rem; margin-bottom: 18px; }
  .produto-specs { gap: 6px; margin-bottom: 18px; padding-bottom: 16px; }
  .spec-pill { font-size: .66rem; padding: 4px 8px; }
  .produto-vantagens { gap: 10px; margin-bottom: 24px; }
  .produto-vantagem { font-size: .82rem; }

  /* Serviços */
  .servicos-header { margin-bottom: 36px; }
  .servico-card-img { height: 200px; }
  .servico-card-body { padding: 22px 18px; }
  .servico-card-title { font-size: 1.25rem; }
  .servico-card-desc { font-size: .86rem; margin-bottom: 18px; }

  /* Pacote Especial */
  .pacote-especial { padding: 28px 18px; border-radius: var(--radius-sm); }
  .pacote-especial-title { font-size: 1.4rem; }
  .pacote-especial-desc { font-size: .88rem; }

  /* Regiões e Estados */
  .regioes-map-container { padding: 20px 14px; }
  .regioes-estados {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .estado-card { padding: 14px 14px; }
  .estado-ufs { gap: 4px; }
  .uf-pill { font-size: .65rem; padding: 3px 7px; }

  /* WhatsApp Card */
  .wa-card-header { padding: 20px 18px; gap: 14px; }
  .wa-icon-wrap { width: 48px; height: 48px; }
  .wa-icon-wrap svg { width: 28px; height: 28px; }
  .wa-card-body { padding: 22px 18px; }
  .wa-card-desc { font-size: .88rem; }
  .wa-btn { padding: 14px 16px; font-size: .88rem; width: 100%; justify-content: center; }

  /* Footer */
  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 0 24px;
  }
  .footer-logo { margin-bottom: 12px; }
  .footer-tagline { font-size: .82rem; }
  .footer-col-title { font-size: .78rem; margin-bottom: 12px; }
  .footer-links li { margin-bottom: 8px; }
  .footer-links a { font-size: .84rem; }
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    padding-top: 20px;
  }
  .footer-copy { font-size: .74rem; }

  /* Float CTA */
  .float-cta {
    bottom: 14px;
    right: 14px;
  }
  .float-cta .btn {
    padding: 11px 16px;
    font-size: .78rem;
    box-shadow: 0 4px 20px rgba(0,0,0,.4);
  }

  /* Cookies */
  .cookies-banner {
    left: 10px;
    right: 10px;
    bottom: 10px;
    flex-direction: column;
    padding: 14px 16px;
    gap: 12px;
  }
  /* Cadastro & Calculadora Mobile */
  .cadastro-hero { padding: 48px 0 60px; }
  .cadastro-hero h1 { font-size: clamp(1.8rem, 7vw, 2.3rem); }
  .cadastro-container { margin-top: -30px; padding: 0 14px; }
  .cadastro-card { padding: 24px 16px; border-radius: var(--radius); margin-bottom: 20px; }
  .cadastro-card-title { font-size: 1.35rem; }
  .cadastro-card-desc { font-size: .84rem; margin-bottom: 20px; }
  .form-row, .form-row--3 { grid-template-columns: 1fr; gap: 0; margin-bottom: 0; }
  .form-group { margin-bottom: 14px; }
  .form-group[style*="grid-column"] { grid-column: auto !important; }
  .form-control { font-size: 16px; padding: 12px 14px; } /* 16px evita auto-zoom no mobile */
  
  .steps-bar { gap: 10px; margin-top: 24px; flex-wrap: wrap; }
  .step-item { font-size: .75rem; gap: 6px; }
  .step-circle { width: 24px; height: 24px; font-size: .72rem; }

  .calc-structure-selector { grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }
  .structure-btn { padding: 10px 8px; font-size: .78rem; text-align: center; }
  .calc-result-box { grid-template-columns: 1fr; gap: 12px; padding: 18px; }
  .calc-result-val { font-size: 1.6rem; }
  
  .wizard-actions {
    flex-direction: column;
    gap: 10px;
    padding-top: 16px;
    margin-top: 20px;
  }
  .wizard-actions .btn-avancar,
  .wizard-actions .btn-whatsapp {
    width: 100%;
    order: 1;
    padding: 14px 18px;
    font-size: .88rem;
  }
  .wizard-actions .btn-voltar {
    width: 100%;
    order: 2;
    justify-content: center;
    padding: 12px 18px;
    font-size: .84rem;
  }

  .pix-box { padding: 20px 14px; border-radius: var(--radius); }
  .pix-copy-row { flex-direction: column; gap: 8px; }
  .pix-input-copy { width: 100%; font-size: .78rem; }
  .pix-copy-row .btn, .pix-copy-row .btn-copiar-pix { width: 100%; justify-content: center; }
  .pix-qr-wrapper img { width: 180px; height: 180px; }
}

/* ── SMARTPHONES PEQUENOS (< 380px) ────────────────────────────── */
@media (max-width: 380px) {
  .container { padding: 0 14px; }
  .hero-title { font-size: 1.85rem; }
  .hero-subtitle { font-size: .86rem; }
  .btn { padding: 12px 14px; font-size: .82rem; }
  .produto-card-title { font-size: 1.35rem; }
  .wa-card-header { flex-direction: column; align-items: flex-start; }
  .calc-structure-selector { grid-template-columns: 1fr; }
  .step-item span { display: none; }
  .step-item.active span { display: inline; }
}

/* ── TOUCH MELHORIAS & TAP TARGETS ─────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  .btn, .wa-btn, .header-nav a, .mobile-nav a, .footer-links a, .structure-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .btn:hover, .produto-card:hover, .servico-card:hover {
    transform: none;
  }
}