/* ==========================================================================
   FORTI NEXUS — Estilos Principais (style.css)
   Empresa B2B de TI | Porto Alegre - RS
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIÁVEIS DO SISTEMA DE DESIGN & RESET
   -------------------------------------------------------------------------- */
:root {
  /* Paleta Principal */
  --bg-navy: #071A3D;
  --bg-navy-dark: #040E24;
  --bg-navy-light: #0D2754;
  --bg-card: rgba(13, 39, 84, 0.7);
  --bg-card-hover: rgba(18, 52, 110, 0.85);
  
  --tech-blue: #0866D8;
  --tech-blue-hover: #0652B3;
  --cyan-accent: #00B8D9;
  --cyan-glow: rgba(0, 184, 217, 0.35);
  
  --text-white: #FFFFFF;
  --text-light: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dark: #1E293B;
  
  --bg-light-sec: #F5F7FA;
  
  /* Gradiente da Marca */
  --brand-gradient: linear-gradient(135deg, #FF9933 0%, #FFCC00 35%, #00BFFF 75%, #007ACC 100%);
  --brand-gradient-hover: linear-gradient(135deg, #FF8800 0%, #FFBB00 35%, #00A6E6 75%, #0066B3 100%);
  --blue-cyan-gradient: linear-gradient(135deg, #0866D8 0%, #00B8D9 100%);
  
  /* Bordas e Vidro (Glassmorphism) */
  --glass-bg: rgba(7, 26, 61, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-active: rgba(0, 184, 217, 0.3);
  --backdrop-blur: blur(12px);
  
  /* Tipografia */
  --font-main: 'Poppins', sans-serif;
  
  /* Sombras & Transições */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(0, 184, 217, 0.25);
  --shadow-hover: 0 20px 35px -10px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 184, 217, 0.3);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-navy);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* --------------------------------------------------------------------------
   2. CLASSES UTILITÁRIAS & COMPONENTES REUTILIZÁVEIS
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.cyan-text {
  color: var(--cyan-accent);
}

/* Títulos Globais */
.section-header {
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: rgba(0, 184, 217, 0.1);
  border: 1px solid rgba(0, 184, 217, 0.3);
  border-radius: 50px;
  color: var(--cyan-accent);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.25;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

/* Botões Estilizados */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.btn-primary {
  background: var(--tech-blue);
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(8, 102, 216, 0.35);
}

.btn-primary:hover {
  background: var(--tech-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(8, 102, 216, 0.5);
}

.btn-brand-gradient {
  background: var(--brand-gradient);
  color: #051329;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 184, 217, 0.3);
}

.btn-brand-gradient:hover {
  background: var(--brand-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 184, 217, 0.5);
  color: #000;
}

.btn-whatsapp {
  background: #25D366;
  color: #FFFFFF;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #20BA5A;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
  border-color: var(--cyan-accent);
  color: var(--cyan-accent);
  background: rgba(0, 184, 217, 0.08);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   3. HEADER & NAVEGAÇÃO STICKY
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 26, 61, 0.7);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(4, 14, 36, 0.95);
  box-shadow: var(--shadow-md);
  border-bottom-color: rgba(0, 184, 217, 0.2);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.logo-text-wrapper {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-white);
  line-height: 1;
}

.logo-subtitle {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--cyan-accent);
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 2px;
}

/* Menu Navbar Desktop */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--brand-gradient);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-white);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Hamburger Menu Icon */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.hamburger-bar {
  display: block;
  width: 26px;
  height: 2px;
  margin: 6px 0;
  background-color: var(--text-white);
  transition: var(--transition);
  border-radius: 2px;
}

.hamburger.active .hamburger-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   4. HERO SECTION (HOME & PÁGINAS INTERNAS)
   -------------------------------------------------------------------------- */
.hero-home {
  position: relative;
  padding: 180px 0 120px;
  background: radial-gradient(circle at 50% 20%, rgba(8, 102, 216, 0.25) 0%, rgba(7, 26, 61, 1) 70%);
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  opacity: 0.7;
}

.hero-glow-1 {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: var(--cyan-glow);
  filter: blur(120px);
  border-radius: 50%;
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 600px;
  height: 600px;
  background: rgba(8, 102, 216, 0.2);
  filter: blur(150px);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.2rem;
  background: rgba(13, 39, 84, 0.9);
  border: 1px solid var(--border-highlight);
  border-radius: 50px;
  color: var(--cyan-accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-glow);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.15;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Banner de Páginas Internas */
.page-banner {
  position: relative;
  padding: 150px 0 70px;
  background: linear-gradient(180deg, var(--bg-navy-dark) 0%, var(--bg-navy) 100%);
  border-bottom: 1px solid var(--glass-border);
  overflow: hidden;
}

.page-banner-title {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--cyan-accent);
}

/* --------------------------------------------------------------------------
   5. SEÇÃO: POR QUE A FORTI NEXUS? (DIFERENCIAIS)
   -------------------------------------------------------------------------- */
.section-features {
  padding: 100px 0;
  position: relative;
  background: var(--bg-navy);
}

.grid-4-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--backdrop-blur);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--brand-gradient);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-active);
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  background: rgba(0, 184, 217, 0.1);
  border: 1px solid rgba(0, 184, 217, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--cyan-accent);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--blue-cyan-gradient);
  color: var(--text-white);
  box-shadow: var(--shadow-glow);
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.75rem;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   6. SEÇÃO: SERVIÇOS EM DESTAQUE (HOME & PÁGINA SERVIÇOS)
   -------------------------------------------------------------------------- */
.section-services {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-navy) 0%, var(--bg-navy-dark) 100%);
  position: relative;
}

.grid-3-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-2-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
  backdrop-filter: var(--backdrop-blur);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-active);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.service-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: rgba(8, 102, 216, 0.15);
  border: 1px solid rgba(8, 102, 216, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  color: var(--cyan-accent);
  flex-shrink: 0;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.service-footer {
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.category-block {
  margin-bottom: 4rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(0, 184, 217, 0.2);
}

.category-icon {
  font-size: 1.5rem;
  color: var(--cyan-accent);
}

.category-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-white);
}

/* --------------------------------------------------------------------------
   7. SEÇÃO BANNER CTA FINAL
   -------------------------------------------------------------------------- */
.section-cta {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-box {
  background: var(--brand-gradient);
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  color: #051329;
}

.cta-title {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: #051329;
  letter-spacing: 0.03em;
}

.cta-subtitle {
  font-size: 1.15rem;
  margin-bottom: 2rem;
  color: #11284A;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   8. PÁGINA SOBRE NÓS
   -------------------------------------------------------------------------- */
.about-section {
  padding: 100px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text-content h2 {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.about-text-content p {
  font-size: 1.05rem;
  color: var(--text-light);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.highlight-box {
  background: rgba(8, 102, 216, 0.1);
  border-left: 4px solid var(--cyan-accent);
  padding: 1.5rem 1.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.75rem 0;
}

.highlight-box p {
  font-weight: 500;
  color: var(--text-white);
  margin: 0;
}

.mvv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.mvv-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: var(--transition);
}

.mvv-card:hover {
  border-color: var(--glass-border-active);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.mvv-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--blue-cyan-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--text-white);
  margin: 0 auto 1.5rem;
  box-shadow: var(--shadow-glow);
}

.mvv-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-white);
}

.mvv-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   9. PÁGINA CONTATO
   -------------------------------------------------------------------------- */
.contact-section {
  padding: 90px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 3rem 2.5rem;
  height: 100%;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 184, 217, 0.15);
  border: 1px solid rgba(0, 184, 217, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--cyan-accent);
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 0.25rem;
}

.contact-info-text p, .contact-info-text a {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact-info-text a:hover {
  color: var(--cyan-accent);
}

/* Formulário de Contato */
.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 3rem 2.5rem;
  backdrop-filter: var(--backdrop-blur);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: rgba(4, 14, 36, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--cyan-accent);
  box-shadow: 0 0 10px rgba(0, 184, 217, 0.25);
  background: rgba(4, 14, 36, 0.85);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.map-wrapper {
  margin-top: 4rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
}

.map-wrapper iframe {
  width: 100%;
  height: 400px;
  border: 0;
  display: block;
}

/* --------------------------------------------------------------------------
   10. PÁGINA DE SUPORTE TÉCNICO
   -------------------------------------------------------------------------- */
.support-section {
  padding: 100px 0 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 400px);
}

.support-box {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  max-width: 720px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-hover);
  position: relative;
  backdrop-filter: var(--backdrop-blur);
}

.support-icon {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: rgba(8, 102, 216, 0.15);
  border: 2px solid var(--cyan-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--cyan-accent);
  margin: 0 auto 2rem;
  box-shadow: var(--shadow-glow);
}

.support-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-white);
}

.support-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.support-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: rgba(255, 153, 51, 0.12);
  border: 1px solid rgba(255, 153, 51, 0.3);
  border-radius: 50px;
  color: #FFB347;
  font-size: 0.9rem;
  font-weight: 600;
  margin-top: 2.5rem;
}

/* --------------------------------------------------------------------------
   11. FOOTER (RODAPÉ)
   -------------------------------------------------------------------------- */
.footer {
  background: var(--bg-navy-dark);
  border-top: 1px solid var(--glass-border);
  padding: 80px 0 30px;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-about p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 1.25rem;
  line-height: 1.7;
}

.footer-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 2px;
  background: var(--cyan-accent);
}

.footer-links li {
  margin-bottom: 0.85rem;
}

.footer-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--cyan-accent);
  padding-left: 5px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-contact i {
  color: var(--cyan-accent);
  margin-top: 4px;
}

.social-icons {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.95rem;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--cyan-accent);
  color: #051329;
  border-color: var(--cyan-accent);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   12. ANIMAÇÕES SCROLL & FADE-IN
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   13. MEDIA QUERIES (RESPONSIVIDADE MOBILE-FIRST)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .grid-4-cols { grid-template-columns: repeat(2, 1fr); }
  .grid-3-cols { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .hero-title { font-size: 2.6rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .header-actions .btn { display: none; }
  .hamburger { display: block; }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(4, 14, 36, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    transition: var(--transition);
    padding: 2rem;
  }
  
  .nav-menu.active {
    left: 0;
  }

  .nav-link {
    font-size: 1.25rem;
  }

  .grid-4-cols, .grid-3-cols, .grid-2-cols, .mvv-grid {
    grid-template-columns: 1fr;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .hero-title { font-size: 2.1rem; }
  .hero-subtitle { font-size: 1.05rem; }
  .cta-title { font-size: 1.8rem; }
  .cta-box { padding: 3rem 1.5rem; }
}