/* =====================================================================
 * UI Upgrade — overlay mobile-first sobre style.css
 * Aplicado em /opt/{site,extintores}. Não altera comportamento existente
 * em desktop (≥1024px); melhora mobile e padroniza cards/footer/hero.
 *
 * Sumário:
 *   - Tipografia fluida (clamp)
 *   - Botões com touch target ≥44px e foco visível
 *   - Cards com altura padronizada e hover sutil
 *   - Hero com overlay melhor e texto legível em mobile
 *   - Carrossel mobile (scroll-snap) para grids com muitos cards
 *   - Footer compacto em mobile + redesenho desktop
 *   - Skip-link para a11y
 * ===================================================================== */

:root {
  --uiu-radius: 14px;
  --uiu-radius-lg: 20px;
  --uiu-shadow-sm: 0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --uiu-shadow-md: 0 8px 24px rgba(15,23,42,.08), 0 2px 6px rgba(15,23,42,.04);
  --uiu-shadow-lg: 0 16px 40px rgba(15,23,42,.12), 0 4px 12px rgba(15,23,42,.06);
  --uiu-touch: 44px;
  --uiu-bp-md: 768px;
  --uiu-bp-lg: 1024px;
}

/* ---------- Acessibilidade: skip link + foco visível ---------------- */
.uiu-skip {
  position: absolute;
  top: -40px;
  left: 0;
  background: #0ea5e9;
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 6px 0;
  transition: top .2s ease;
}
.uiu-skip:focus { top: 0; }

a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid #0ea5e9 !important;
  outline-offset: 2px !important;
  border-radius: 4px;
}

/* ---------- Tipografia fluida ---------------------------------------- */
.hero-title,
h1.hero-title {
  font-size: clamp(1.75rem, 4.5vw + 1rem, 3.25rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.hero-subtitle {
  font-size: clamp(1rem, 1.5vw + .75rem, 1.25rem);
  line-height: 1.5;
}
.section-title {
  font-size: clamp(1.5rem, 2.5vw + .75rem, 2.25rem);
  line-height: 1.2;
}

/* ---------- Botões: touch target + estados melhorados ---------------- */
.btn,
button.btn-primary,
button.btn-secondary,
.btn-primary,
.btn-secondary,
.btn-lg {
  min-height: var(--uiu-touch);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.25rem;
  font-weight: 600;
  letter-spacing: .01em;
  border-radius: 10px;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease;
  text-decoration: none;
}
.btn-primary,
.btn.btn-primary {
  box-shadow: var(--uiu-shadow-sm);
}
.btn-primary:hover,
.btn.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--uiu-shadow-md);
}
.btn-primary:active { transform: translateY(0); }

.btn-lg { padding: 1rem 1.75rem; font-size: 1.0625rem; }

/* ---------- Hero: ajustes leves (preserva overlay/centering originais)
 * NÃO redefinir .hero / .hero-overlay / .hero-content — o style.css
 * original já tem flex centering e gradiente forte (92% opacidade).
 * Aqui só adicionamos refinamentos não-conflitantes.
 * --------------------------------------------------------------------- */
.hero-buttons {
  flex-wrap: wrap;
  gap: .75rem;
}
.hero-logo { max-width: clamp(140px, 28vw, 220px); }

/* ---------- Cards: altura padronizada + hover ------------------------ */
.card {
  background: #fff;
  border-radius: var(--uiu-radius);
  box-shadow: var(--uiu-shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s cubic-bezier(.4,0,.2,1),
              box-shadow .25s ease;
  border: 1px solid rgba(15,23,42,.05);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--uiu-shadow-md);
  border-color: rgba(14,165,233,.18);
}
.card .card-body,
.card .card-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
}
.card .card-body > .btn,
.card .card-content > .btn,
.card a.btn,
.card .card-cta { margin-top: auto; }

/* ---------- Parallax sections ---------------------------------------
 * Técnica: background-attachment: fixed + cover + gradient overlay.
 * Mobile/tablet (<1024px) cai para scroll (iOS Safari não suporta fixed bem
 * e a performance em mobile com fixed é ruim).
 * --------------------------------------------------------------------- */
@media (min-width: 1024px) {
  /* Utility class — pode ser aplicada a qualquer section */
  .uiu-parallax {
    background-attachment: fixed !important;
    background-size: cover !important;
    background-position: center center !important;
    background-repeat: no-repeat !important;
    position: relative;
  }

  /* SITE (FHL Climatização) — parallax em #diferenciais (azul) ------- */
  #diferenciais.section.section-blue {
    background-image:
      linear-gradient(135deg, rgba(15,23,42,.88) 0%, rgba(30,58,138,.82) 50%, rgba(29,78,216,.78) 100%),
      url('https://images.unsplash.com/photo-1718203862467-c33159fdc504?auto=format&fit=crop&w=1920&q=70');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    color: #f8fafc;
  }
  #diferenciais.section.section-blue .section-title,
  #diferenciais.section.section-blue h2,
  #diferenciais.section.section-blue h3 {
    color: #ffffff;
  }
  #diferenciais.section.section-blue .section-subtitle,
  #diferenciais.section.section-blue p {
    color: rgba(241,245,249,.92);
  }

  /* SITE — parallax suave em #sobre */
  #sobre.section {
    background-image:
      linear-gradient(180deg, rgba(248,250,252,.94) 0%, rgba(241,245,249,.96) 100%),
      url('https://images.unsplash.com/photo-1504328345606-18bbc8c9d7d1?auto=format&fit=crop&w=1920&q=60');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
  }

  /* SITE — parallax sutil em #depoimentos */
  #depoimentos.section.section-gray {
    background-image:
      linear-gradient(180deg, rgba(241,245,249,.93) 0%, rgba(226,232,240,.95) 100%),
      url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&w=1920&q=60');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
  }
}

/* Mobile / tablet — sem fixed (performance + iOS Safari) */
@media (max-width: 1023.98px) {
  #diferenciais.section.section-blue,
  #sobre.section,
  #depoimentos.section.section-gray {
    background-attachment: scroll !important;
    background-size: cover;
    background-position: center;
  }
}

/* ---------- Cards na seção "Por que escolher a FHL?" (#diferenciais)
 * Glassmorphism + sombra azul + texto/SVG brancos para contrastar com o
 * parallax escuro do background.
 * --------------------------------------------------------------------- */
#diferenciais.section.section-blue .card,
#diferenciais.section.section-blue .card-differential {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 16px;
  color: #ffffff;
  box-shadow:
    0 10px 30px rgba(14, 165, 233, 0.25),
    0 4px 12px rgba(15, 23, 42, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  text-align: center;
  padding: 2rem 1.5rem;
  transition: transform .3s cubic-bezier(.4,0,.2,1),
              box-shadow .3s ease,
              background-color .3s ease,
              border-color .3s ease;
}

#diferenciais.section.section-blue .card:hover,
#diferenciais.section.section-blue .card-differential:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(56, 189, 248, 0.55);
  box-shadow:
    0 20px 50px rgba(14, 165, 233, 0.45),
    0 8px 20px rgba(15, 23, 42, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

/* Texto: tudo branco com hierarquia leve */
#diferenciais.section.section-blue .card h3,
#diferenciais.section.section-blue .card-differential h3 {
  color: #ffffff;
  font-weight: 700;
  margin: 1rem 0 .5rem;
}

#diferenciais.section.section-blue .card p,
#diferenciais.section.section-blue .card-differential p {
  color: rgba(255, 255, 255, 0.85);
  font-size: .95rem;
  line-height: 1.55;
  margin: 0;
}

/* Ícone (SVG usa stroke=currentColor, então color: #fff propaga) */
#diferenciais.section.section-blue .card-icon,
#diferenciais.section.section-blue .card-differential .card-icon {
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin: 0 auto;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(56,189,248,.25), rgba(14,165,233,.18));
  border: 1px solid rgba(56,189,248,.35);
  box-shadow: 0 4px 16px rgba(14,165,233,.35);
  transition: transform .3s ease, background .3s ease, box-shadow .3s ease;
}

#diferenciais.section.section-blue .card:hover .card-icon,
#diferenciais.section.section-blue .card-differential:hover .card-icon {
  transform: scale(1.08) rotate(-3deg);
  background: linear-gradient(135deg, rgba(56,189,248,.4), rgba(14,165,233,.3));
  box-shadow: 0 6px 24px rgba(56,189,248,.5);
}

#diferenciais.section.section-blue .card-icon svg,
#diferenciais.section.section-blue .card-differential .card-icon svg {
  stroke: #ffffff;
  fill: none;
  width: 32px;
  height: 32px;
}

/* Cards animados: garantir que o estado final (visible) tenha cor branca */
#diferenciais.section.section-blue .animate-on-scroll {
  color: #ffffff;
}

/* ---------- Section spacing tight on mobile -------------------------- */
.section {
  padding: clamp(2.5rem, 6vw, 5rem) 0;
}
.section-header {
  margin-bottom: clamp(1.5rem, 3vw, 2.75rem);
  text-align: center;
}
.section-subtitle {
  max-width: 640px;
  margin: .5rem auto 0;
  font-size: clamp(.95rem, 1vw + .5rem, 1.1rem);
  color: #475569;
}

/* ---------- Carrossel mobile (scroll-snap) — aplicado em <768px ----- */
@media (max-width: 767.98px) {
  /* converter grid em scroller horizontal */
  .uiu-carousel,
  .grid.grid-3,
  .grid.grid-4,
  section .grid-3,
  section .grid-4 {
    display: flex !important;
    grid-template-columns: none !important;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 1rem;
    gap: 1rem;
    padding: 1rem .25rem 1.5rem;
    margin: 0 -1rem;        /* sangra na borda do container */
    padding-inline: 1rem;
    scrollbar-width: none;
  }
  .uiu-carousel::-webkit-scrollbar,
  .grid.grid-3::-webkit-scrollbar,
  .grid.grid-4::-webkit-scrollbar { display: none; }

  .uiu-carousel > *,
  .grid.grid-3 > *,
  .grid.grid-4 > *,
  section .grid-3 > *,
  section .grid-4 > * {
    flex: 0 0 86%;
    max-width: 360px;
    scroll-snap-align: start;
    scroll-snap-stop: always;
  }

  /* Botões hero stack em mobile (não mexer em .hero / .hero-overlay) */
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-buttons .btn { width: 100%; }

  /* Section padding mobile */
  .section { padding: 2rem 0; }

  /* CTA stronger em mobile */
  .btn-primary { font-size: 1rem; }
}

/* Indicador visual de "deslize" só em mobile */
@media (max-width: 767.98px) {
  .uiu-scroll-hint {
    display: block;
    text-align: center;
    color: #94a3b8;
    font-size: .8rem;
    margin-top: .5rem;
    letter-spacing: .04em;
  }
  .uiu-scroll-hint::before { content: "‹ "; }
  .uiu-scroll-hint::after  { content: " ›"; }
}
@media (min-width: 768px) {
  .uiu-scroll-hint { display: none; }
}

/* ---------- Footer redesign ----------------------------------------- */
.site-footer {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #cbd5e1;
}
.site-footer .container { padding-block: clamp(2rem, 4vw, 3rem); }

.footer-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  grid-template-columns: 1.5fr 1fr 1.2fr 1fr 1.2fr;
}
.footer-col h4.footer-title,
.footer-title {
  color: #f1f5f9 !important;
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 1rem;
  letter-spacing: .02em;
}
.footer-title::after {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: #0ea5e9;
  margin-top: 6px;
  border-radius: 2px;
}
.footer-about-text { color: #94a3b8; font-size: .9rem; line-height: 1.6; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 0 0 .5rem; }
.footer-links a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: .9rem;
  transition: color .15s ease, transform .15s ease;
  display: inline-block;
}
.footer-links a:hover { color: #38bdf8; transform: translateX(2px); }

.footer-contact div {
  display: flex;
  align-items: flex-start;
  gap: .625rem;
  margin-bottom: .75rem;
  font-size: .9rem;
}
.footer-contact a,
.footer-contact span { color: #cbd5e1; text-decoration: none; }
.footer-contact a:hover { color: #38bdf8; }
.footer-contact svg { flex-shrink: 0; color: #38bdf8; margin-top: 2px; }

.footer-social { display: flex; flex-direction: column; gap: .5rem; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  gap: .625rem;
  color: #cbd5e1;
  background: rgba(255,255,255,.04);
  padding: .5rem .75rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: .875rem;
  transition: background .2s ease, color .2s ease;
}
.footer-social a:hover {
  background: rgba(56,189,248,.12);
  color: #38bdf8;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: 1.25rem 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: .825rem;
  color: #94a3b8;
}
.footer-bottom .footer-dev a { color: #38bdf8; text-decoration: none; }

/* Footer responsivo: reduz colunas progressivamente */
@media (max-width: 1023.98px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-col:nth-child(4),
  .footer-col:nth-child(5) {
    grid-column: span 1;
  }
}
@media (max-width: 767.98px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .footer-col:first-child { grid-column: 1 / -1; text-align: center; }
  .footer-col:first-child .footer-logo,
  .footer-col:first-child .footer-about-text { text-align: center; margin-inline: auto; max-width: 380px; }
  .footer-col:first-child .footer-logo-img { margin-inline: auto; display: block; }
  .footer-bottom .container { justify-content: center; text-align: center; }
}
@media (max-width: 480px) {
  /* Em telas muito pequenas, accordion (details/summary) via JS */
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col:first-child { grid-column: 1; }

  /* Quando JS marca como accordion-active */
  .footer-grid.uiu-footer-accordion .footer-col:not(:first-child) {
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 1rem;
  }
  .footer-grid.uiu-footer-accordion .footer-col:not(:first-child) .footer-title {
    cursor: pointer;
    user-select: none;
    margin: 0;
    padding: .5rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .footer-grid.uiu-footer-accordion .footer-col:not(:first-child) .footer-title::before {
    content: "+";
    font-size: 1.4rem;
    line-height: 1;
    color: #38bdf8;
    margin-right: 8px;
    transition: transform .2s ease;
  }
  .footer-grid.uiu-footer-accordion .footer-col.uiu-open .footer-title::before {
    content: "−";
  }
  .footer-grid.uiu-footer-accordion .footer-col:not(:first-child) .footer-title::after {
    display: none;
  }
  .footer-grid.uiu-footer-accordion .footer-col:not(:first-child)
    > *:not(.footer-title) {
    max-height: 0;
    overflow: hidden;
    transition: max-height .25s ease;
  }
  .footer-grid.uiu-footer-accordion .footer-col.uiu-open
    > *:not(.footer-title) {
    max-height: 600px;
  }
}

/* ---------- WhatsApp float maior em mobile (touch target) ----------- */
@media (max-width: 767.98px) {
  .whatsapp-float {
    width: 56px !important;
    height: 56px !important;
  }
}

/* ---------- Utilitários expostos ------------------------------------- */
.uiu-mt-0 { margin-top: 0 !important; }
.uiu-text-center { text-align: center; }
.uiu-only-mobile { display: none; }
@media (max-width: 767.98px) { .uiu-only-mobile { display: block; } }
@media (min-width: 768px)    { .uiu-only-desktop { display: block; } }

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