:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --text-dark: #111827;
    --text-medium: #374151;
    --text-light: #6b7280;
    --bg-light: #f3f4f6;
    --transition-base: 0.3s ease;
  
    --primary-blue: #2563eb;
    --primary-blue-hover: #1d4ed8;
    --primary-blue-active: #1e40af;
    --whatsapp-green: #25d366;
    --whatsapp-green-hover: #128c7e;
    --text-dark: #111827;
    --text-medium: #374151;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-dark: #000000;
    --bg-contact-item: rgba(255, 255, 255, 0.05);
    
    /* Espaçamentos */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
    
    /* Bordas */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transições */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
  }
  
  body {
    margin: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
    line-height: 1.6;
    color: #111827;
  }
  
  /* Header - Aprimorado com variáveis e transições */
  .header {
    --header-height: 64px;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: white;
    box-shadow: 0 2px 10px var(--shadow-color);
    transition: box-shadow 0.3s ease;
  }
  
  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    height: var(--header-height);
    max-width: 1200px;
    margin: 0 auto;
  }
  
  /* Logo - Com efeito hover suave */
  .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform 0.2s ease;
  }
  
  .logo:hover {
    transform: translateY(-2px);
  }
  
  .logo-img {
    height: 55px;
    width: auto;
    transition: transform 0.3s ease;
  }
  
  .logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    margin-left: 0.5rem;
  }
  
  /* Menu Desktop - Aprimorado */
  .menu-desktop {
    display: none;
  }
  
  @media (min-width: 768px) {
    .menu-desktop {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }
  }
  
  .menu-item {
    position: relative;
  }
  
  .menu-button {
    display: flex;
    align-items: center;
    background: none;
    border: none;
    color: #000000;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.75rem 1.25rem;
    transition: all 0.3s ease;
    text-decoration: none;
    border-radius: 0.25rem;
  }
  
  .menu-button:hover {
    color: #2563eb;
    transform: translateY(-2px);
    background-color: rgba(37, 99, 235, 0.05);
  }
  
  .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: none;
    z-index: 50;
    min-width: 200px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  
  .menu-item:hover .submenu {
    display: block;
    opacity: 1;
    transform: translateY(0);
  }
  
  .submenu-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: #374151;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
  }
  
  .submenu-item:hover {
    color: #2563eb;
    background-color: #f8fafc;
    border-left-color: #2563eb;
    padding-left: 1.75rem;
  }
  
  /* Menu Mobile - Aprimorado */
  .menu-mobile-button {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.75rem;
    color: #000000;
    transition: transform 0.2s ease;
  }
  
  .menu-mobile-button:hover {
    transform: scale(1.1);
  }
  
  @media (min-width: 768px) {
    .menu-mobile-button {
      display: none;
    }
  }
  
  .menu-mobile {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: white;
    padding: 1.5rem;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
  }
  
  .menu-mobile.open {
    transform: translateX(0);
  }
  
  .menu-mobile-item {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
  }
  
  .menu-mobile-link {
    display: block;
    padding: 1rem;
    color: #374151;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
  }
  
  .menu-mobile-link:hover {
    color: #2563eb;
  }
  
  .menu-mobile-link.button {
    background-color: #2563eb;
    color: white;
    border-radius: 0.5rem;
    text-align: center;
    margin-top: 1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
  }
  
  .menu-mobile-link.button:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
  }
  
  .submenu-mobile {
    display: none;
    padding-left: 1rem;
    animation: fadeIn 0.3s ease;
  }
  
  .submenu-mobile.open {
    display: block;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
  }  

/* Hero Section */
.hero-automacao {
  position: relative;
  height: 60vh;
  margin-top: 70px;
}

.hero-image-automacao {
  background-image: url('https://images.unsplash.com/photo-1558002038-1055907df827?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
  background-size: cover;
  background-position: center;
  height: 100%;
  width: 100%;
}

.hero-overlay-automacao {
  background-color: rgba(0,0,0,0.6);
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
}

.hero-automacao h1 {
  color: #fff;
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero-automacao p {
  color: #fff;
  font-size: 1.5rem;
  max-width: 600px;
}

/* Main Content */
.main-automacao {
  padding: 4rem 0;
}

.automacao-content h2 {
  font-size: 2.5rem;
  color: #2563eb;
  margin-bottom: 2rem;
  text-align: center;
}

.automacao-intro, .automacao-conclusao {
  font-size: 1.2rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}

.sistemas-automacao {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.sistema-item {
  background: #fff;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Estilos para o painel de monitoramento */
.monitoramento-painel {
  margin-top: 1.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1.5rem;
  background-color: #f9fafb;
}

.sensores-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.sensor-card {
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.sensor-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.sensor-header i {
  font-size: 1.5rem;
  color: #3b82f6;
}

.sensor-value {
  font-size: 2rem;
  font-weight: bold;
  color: #1e40af;
  text-align: center;
  margin: 0.5rem 0;
}

.sensor-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.sensor-btn {
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 4px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.sensor-range {
  flex-grow: 1;
}

.slider {
  width: 100%;
}

.sensor-gif, .integration-gif {
  width: 100%;
  border-radius: 4px;
  margin-top: 0.5rem;
}

.sensor-indicators {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.sensor-gif {
  width: 100%;
  max-height: 120px;
  border-radius: 8px;
  object-fit: contain;
  margin-top: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
}

.indicator {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.progress-bar {
  height: 8px;
  background: #e5e7eb;
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: #10b981;
}

.progress-fill.co2 {
  background: #f59e0b;
}

.level-sensors {
  display: flex;
  gap: 1.5rem;
  justify-content: space-around;
  margin-top: 1rem;
}

.level-sensor {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.level-container {
  width: 30px;
  height: 100px;
  background: #e5e7eb;
  border-radius: 15px;
  position: relative;
  overflow: hidden;
}

.level-bar {
  position: absolute;
  bottom: 0;
  width: 100%;
  background: #3b82f6;
  transition: height 0.5s ease;
}

.level-bar.gas {
  background: #f59e0b;
}

.integration-notice {
  text-align: center;
  padding: 1rem;
  background: #eff6ff;
  border-radius: 8px;
  margin-top: 1.5rem;
}

@media (max-width: 768px) {
  .sensores-container {
    grid-template-columns: 1fr;
  }
  
  .level-sensors {
    justify-content: center;
  }
}

/* Estilos para os botões Saber Mais/Menos */
.saber-mais-btn {
  background-color: var(--primary-blue);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  transition: all var(--transition-normal);
}

.saber-mais-btn:hover {
  background-color: var(--primary-blue-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.saber-mais-btn i {
  transition: transform var(--transition-normal);
}

.saber-mais-btn.active i {
  transform: rotate(180deg);
}

/* Efeito de transição para o painel */
.monitoramento-painel {
  overflow: hidden;
  transition: all 0.4s ease;
  max-height: 0;
  opacity: 0;
}

.monitoramento-painel.show {
  max-height: 2000px; /* Valor maior que o conteúdo real */
  opacity: 1;
  margin-top: 1.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1.5rem;
  background-color: #f9fafb;
}

.sistema-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.sistema-icon {
  font-size: 2.5rem;
  color: #2563eb;
  margin-bottom: 1rem;
}

.sistema-detalhes h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: #111;
}

.sistema-detalhes p {
  color: #666;
}

/* Footer */
.contact-section {
  padding: var(--space-xxl) 0;
  background-color: var(--bg-dark);
  color: white;
  text-align: center;
}

.contact-section h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--space-xxl);
  position: relative;
}

.contact-section h2::after {
  content: '';
  position: absolute;
  width: 100px;
  height: 4px;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #3498db, #2563eb);
  border-radius: 2px;
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background-color: var(--bg-contact-item);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.contact-item:hover {
  transform: translateY(-5px);
  background-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.contact-icon {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: var(--space-xs);
}

.contact-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: white;
}

.contact-item p {
  font-size: 1rem;
  line-height: 1.6;
  color: #d1d5db;
  margin: 0;
  text-align: center;
}

.contact-link {
  color: #93c5fd;
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-block;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
  position: relative;
}

.contact-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: var(--primary-blue);
  transition: width var(--transition-fast);
}

.contact-link:hover {
  color: var(--primary-blue);
}

.contact-link:hover::after {
  width: 100%;
}

/* Efeito especial para links de telefone */
a[href^="tel:"] {
  font-weight: 500;
}

/* Estilos para o footer */
.site-footer {
  background-color: var(--bg-dark);
  padding: var(--space-md) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-bottom p {
  color: #d1d5db;
  font-size: 0.9rem;
  margin: 0;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-bottom p:hover {
  opacity: 1;
}

/* Media query para responsividade */
@media (max-width: 768px) {
  .footer-bottom p {
    font-size: 0.8rem;
  }
}

/* Responsividade para telas pequenas */
@media (max-width: 600px) {
  .contact-info {
    grid-template-columns: 1fr;
  }
  
  .contact-item {
    padding: var(--space-md);
  }
}

/* Botão do WhatsApp - Aprimorado */
.whatsapp-button {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  background-color: var(--whatsapp-green);
  border-radius: var(--radius-full);
  padding: var(--space-sm);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.whatsapp-button:hover {
  background-color: var(--whatsapp-green-hover);
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.whatsapp-button img {
  width: 30px;
  height: 30px;
}

/* Responsividade */
@media (max-width: 768px) {
  .hero-automacao {
    height: 50vh;
  }
  
  .hero-automacao h1 {
    font-size: 2rem;
  }
  
  .hero-automacao p {
    font-size: 1.2rem;
  }
  
  .sistemas-automacao {
    grid-template-columns: 1fr;
  }
  
  .whatsapp-button {
    width: 50px;
    height: 50px;
    bottom: 1.5rem;
    right: 1.5rem;
  }
  
  .whatsapp-button img {
    width: 25px;
    height: 25px;
  }
}