/* ===========================
   HOLTZ – Landing Page CSS
   =========================== */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  color: #1a1a2e;
  background: #fff;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ---------- CSS CUSTOM PROPERTIES ---------- */
:root {
  --crimson: #8B1A1A;
  --crimson-dark: #6d1313;
  --crimson-light: #a82020;
  --navy: #0d1b2a;
  --navy-mid: #1a2e45;
  --navy-light: #1e3a5f;
  --green: #1a5c3a;
  --green-light: #226b45;
  --white: #ffffff;
  --off-white: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-400: #adb5bd;
  --gray-600: #6c757d;
  --gray-800: #343a40;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5 { line-height: 1.2; font-weight: 700; }
p { color: #374151; text-align: justify; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- CONTAINER ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- SECTION DEFAULTS ---------- */
.section { padding: 80px 0; }

.section-tag {
  display: inline-block;
  background: rgba(139,26,26,.1);
  color: var(--crimson);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--navy);
  margin-bottom: 20px;
}

.section-title-underline {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  color: var(--navy);
  margin-bottom: 8px;
}

.title-line {
  width: 60px;
  height: 4px;
  background: var(--crimson);
  border-radius: 2px;
  margin-bottom: 28px;
}

.section-heading.centered { text-align: center; }
.section-heading.centered .title-line { margin: 8px auto 28px; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--crimson);
  color: #fff;
  border-color: var(--crimson);
}
.btn-primary:hover {
  background: var(--crimson-dark);
  border-color: var(--crimson-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139,26,26,.4);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,.15);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ===========================
   HEADER
   =========================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,.08);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-img {
  height: 70px;
  width: auto;
  display: block;
  object-fit: contain;
}
.logo-img--footer {
  height: 60px;
}

/* Nav */
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  font-size: .83rem;
  font-weight: 500;
  color: var(--gray-800);
  padding: 6px 10px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--crimson);
  background: rgba(139,26,26,.06);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===========================
   HERO
   =========================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(13,27,42,.92) 0%, rgba(139,26,26,.75) 100%),
    url('images/hvac_hero_bg.png') center/cover no-repeat;
  padding-top: 72px;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(13,27,42,.7) 50%, transparent 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 60px;
  padding-bottom: 160px;
}

.hero-text { max-width: 900px; }

.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
  animation: fadeUp .8s ease both;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: rgba(255,255,255,.9);
  margin-bottom: 16px;
  animation: fadeUp .8s .15s ease both;
}
.hero-subtitle strong { color: #fff; }

.hero-desc {
  font-size: .97rem;
  color: rgba(255,255,255,.8);
  line-height: 1.7;
  margin-bottom: 4px;
  text-align: justify;
  animation: fadeUp .8s .25s ease both;
}
.hero-desc:last-of-type {
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: fadeUp .8s .35s ease both;
}

/* Trust bar */
.trust-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 2;
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.trust-bar-inner {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
}
.trust-item {
  flex: 1;
  min-width: 180px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border-right: 1px solid var(--gray-200);
  transition: background var(--transition);
}
.trust-item:last-child { border-right: none; }
.trust-item:hover { background: var(--gray-100); }
.trust-item span {
  font-size: .85rem;
  font-weight: 600;
  color: var(--navy);
}

/* ===========================
   SOBRE
   =========================== */
.about-section { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text-col p {
  margin-bottom: 16px;
  font-size: .97rem;
  line-height: 1.8;
}

.about-img-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.about-img-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139,26,26,.2) 0%, transparent 60%);
  pointer-events: none;
}

/* ===========================
   RESPOSÁVEL TÉCNICO
   =========================== */
.responsavel-section { background: var(--off-white); }

.section-heading { margin-bottom: 40px; }

.responsavel-grid {
  display: grid;
  grid-template-columns: 220px 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.photo-frame {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid var(--crimson);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}
.responsavel-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.responsavel-name {
  font-size: 1.7rem;
  color: var(--navy);
  margin-bottom: 4px;
}
.responsavel-role {
  font-size: .9rem;
  color: var(--crimson);
  font-weight: 600;
  margin-bottom: 16px;
}
.responsavel-desc, .responsavel-ashrae {
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: 12px;
}

.areas-title {
  font-size: 1rem;
  color: var(--navy);
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.area-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 16px 8px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.area-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.area-item span { font-size: .75rem; font-weight: 500; color: var(--gray-800); line-height: 1.4; }
.area-icon { display: flex; align-items: center; justify-content: center; }

/* ===========================
   SOLUÇÕES
   =========================== */
.solucoes-section { background: #fff; }

.solucoes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.solucao-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--navy);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.solucao-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.solucao-img-wrap {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.solucao-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.solucao-card:hover .solucao-img-wrap img { transform: scale(1.05); }
.solucao-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,27,42,.1), rgba(13,27,42,.6));
}

.solucao-body {
  padding: 24px 20px;
  flex: 1;
}
.solucao-body h3 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}
.solucao-body ul { display: flex; flex-direction: column; gap: 8px; }
.solucao-body ul li {
  font-size: .82rem;
  color: rgba(255,255,255,.75);
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}
.solucao-body ul li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--crimson-light);
  font-size: 1.2rem;
  line-height: 1.3;
}

/* ===========================
   DIFERENCIAIS
   =========================== */
.diferenciais-section { background: var(--off-white); }

.diferenciais-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}

.diferencial-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding: 28px 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 2px solid transparent;
}
.diferencial-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--crimson);
}
.diferencial-icon svg { display: block; }
.diferencial-item h4 {
  font-size: .85rem;
  color: var(--navy);
  font-weight: 600;
  line-height: 1.4;
}

/* ===========================
   SUSTENTABILIDADE
   =========================== */
.sust-section { background: #fff; }

.sust-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.sust-card {
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sust-card h3 {
  font-size: 1.15rem;
  border: 2px solid currentColor;
  display: inline-block;
  padding: 6px 18px;
  border-radius: 30px;
  align-self: flex-start;
}

.sust-card--dark {
  background: var(--navy);
  color: #fff;
}
.sust-card--dark h3 { border-color: #fff; color: #fff; }
.sust-card--dark p { color: rgba(255,255,255,.8); }

.sust-card--green {
  background: var(--green);
  color: #fff;
}
.sust-card--green h3 { border-color: #fff; color: #fff; }
.sust-card--green p { color: rgba(255,255,255,.85); }

.sust-highlight {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff !important;
}

.sust-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,.2);
}

.sust-label {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,.6) !important;
}

.sust-items {
  font-size: .9rem;
  font-weight: 600;
  color: rgba(255,255,255,.9) !important;
}

.sust-leed {
  font-size: .88rem;
  margin-top: auto;
  font-style: italic;
  color: rgba(255,255,255,.8) !important;
}

/* ===========================
   TREINAMENTOS
   =========================== */
.trein-section { background: var(--off-white); }

.trein-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.trein-img-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.trein-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.trein-img-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top right, rgba(13,27,42,.4) 0%, transparent 60%);
  z-index: 1;
  pointer-events: none;
}

.trein-subtitle { font-size: .9rem; color: var(--gray-600); margin-bottom: 6px; }
.trein-teams { font-size: 1.15rem; color: var(--navy); margin-bottom: 16px; }
.trein-desc {
  font-size: .92rem;
  color: var(--gray-600);
  margin-bottom: 24px;
  font-style: italic;
  border-left: 3px solid var(--crimson);
  padding-left: 16px;
}

.trein-topics {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}
.trein-topic-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .9rem;
  color: var(--gray-800);
}
.trein-topic-item svg { flex-shrink: 0; }

/* ===========================
   CTA SECTION
   =========================== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--navy) 0%, var(--crimson-dark) 60%, var(--navy-mid) 100%);
  padding: 100px 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(139,26,26,.3) 0%, transparent 70%);
  pointer-events: none;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

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

.cta-content h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  color: #fff;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,.75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.4fr auto;
  gap: 48px;
  padding: 56px 24px 40px;
}

.footer-logo { margin-bottom: 16px; }
.footer-logo .logo-name { color: #fff; }
.footer-logo .logo-sub { color: rgba(255,255,255,.5); }

.footer-tagline {
  font-size: .85rem;
  color: rgba(255,255,255,.5);
  line-height: 1.6;
}

.footer-nav h4, .footer-contact h4 {
  color: #fff;
  font-size: .9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a {
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-nav a:hover { color: #fff; }

.footer-contact-name {
  font-size: .95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}
.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: rgba(255,255,255,.65);
  margin-bottom: 8px;
}
.footer-contact a { color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer-contact a:hover { color: #fff; }

.footer-badges {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.badge-item { opacity: .8; transition: opacity var(--transition); }
.badge-item:hover { opacity: 1; }

/* Footer bottom */
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 24px;
}
.footer-bottom p { font-size: .78rem; color: rgba(255,255,255,.4); }
.footer-dev { color: rgba(255,255,255,.6); font-weight: 600; transition: color var(--transition); }
.footer-dev:hover { color: #fff; }

/* ===========================
   WHATSAPP FLOAT
   =========================== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,.5);
  transition: all var(--transition);
  animation: pulse 2.5s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37,211,102,.6);
  animation: none;
}

/* ===========================
   ANIMATIONS
   =========================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,.5); }
  50%       { box-shadow: 0 4px 32px rgba(37,211,102,.8); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1100px) {
  .diferenciais-grid { grid-template-columns: repeat(3, 1fr); }
  .solucoes-grid { grid-template-columns: repeat(2, 1fr); }
  .responsavel-grid { grid-template-columns: 180px 1fr; }
  .responsavel-areas-col { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 800px) {
  .section { padding: 60px 0; }

  .hamburger { display: flex; }
  .nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: #fff;
    border-top: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    padding: 16px 0;
    z-index: 999;
  }
  .nav.open { display: block; }
  .nav-list { flex-direction: column; align-items: flex-start; padding: 0 24px; gap: 0; }
  .nav-link { padding: 12px 0; width: 100%; border-radius: 0; border-bottom: 1px solid var(--gray-100); }

  .about-grid { grid-template-columns: 1fr; }
  .about-image-col { order: -1; }
  .about-img { height: 260px; }

  .responsavel-grid { grid-template-columns: 1fr; }
  .responsavel-photo-col { display: flex; justify-content: center; }

  .areas-grid { grid-template-columns: repeat(2, 1fr); }

  .solucoes-grid { grid-template-columns: 1fr 1fr; }

  .diferenciais-grid { grid-template-columns: repeat(2, 1fr); }

  .sust-grid { grid-template-columns: 1fr; }

  .trein-grid { grid-template-columns: 1fr; }
  .trein-img { height: 260px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-badges { flex-direction: row; justify-content: flex-start; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }

  .trust-bar-inner { gap: 0; }
  .trust-item { min-width: 50%; border-right: none; border-bottom: 1px solid var(--gray-200); }
}

@media (max-width: 500px) {
  .solucoes-grid { grid-template-columns: 1fr; }
  .diferenciais-grid { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 1.9rem; }
  .hero-actions { flex-direction: column; }
  .cta-actions { flex-direction: column; }
  .areas-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item { min-width: 100%; }
}