@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Typography Setup */
body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 1.05;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Scroll Progress indicator (Linha de Engenharia™) */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  z-index: 1001;
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background-color: var(--accent-color);
  transition: width 0.1s linear;
}

/* Structural Background Grid Columns (CAD Style) */
.structural-columns {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  pointer-events: none;
  z-index: 0;
}

.structural-col {
  border-left: 1px solid rgba(255, 255, 255, 0.015);
  height: 100%;
}

.structural-col:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.015);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
  position: relative;
  z-index: 2;
}

/* Menu Hamburger (☰) - Minimalist, almost invisible */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-premium);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-color);
}

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

.logo-container {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  width: 130px;
  height: auto;
  object-fit: contain;
}

@media (max-width: 768px) {
  .logo-img {
    width: 100px;
  }
}

.logo {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  letter-spacing: 0.2em;
}

.menu-trigger {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: var(--transition-fast);
}

.menu-trigger:hover {
  color: var(--text-primary);
}

/* Navigation Overlay & Mega Menu */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.98);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-premium);
  overflow-y: auto;
  padding: 40px var(--spacing-md);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mega-menu-container {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: var(--spacing-xl);
  width: 100%;
  max-width: var(--max-width);
  align-items: start;
}

.mega-menu-left {
  border-right: 1px solid var(--border-color);
  padding-right: var(--spacing-lg);
}

.nav-menu-main {
  list-style: none;
  padding: 0;
}

.nav-menu-main li {
  margin-bottom: var(--spacing-md);
}

.nav-link-main {
  font-size: 2.8rem;
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 300;
  letter-spacing: -0.05em;
  display: block;
  transition: var(--transition-premium);
}

.nav-link-main:hover {
  color: var(--text-primary);
  transform: translateX(8px);
}

.mega-menu-right {
  padding-left: var(--spacing-sm);
}

.mega-menu-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.mega-menu-col h5 {
  font-family: var(--font-mono);
  color: var(--accent-color);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.mega-menu-col ul {
  list-style: none;
  padding: 0;
}

.mega-menu-col li {
  margin-bottom: 0.6rem;
}

.mega-menu-col a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  display: inline-block;
}

.mega-menu-col a:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

@media (max-width: 992px) {
  .nav-overlay {
    align-items: flex-start;
    padding-top: 100px;
  }
  
  .mega-menu-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .mega-menu-left {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-right: 0;
    padding-bottom: var(--spacing-md);
  }
  
  .nav-link-main {
    font-size: 2rem;
  }
  
  .mega-menu-cols {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
}

@media (max-width: 576px) {
  .mega-menu-cols {
    grid-template-columns: 1fr;
  }
}

/* Premium Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 2rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-radius: 0;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-premium);
}

.btn-primary {
  background-color: var(--accent-color);
  color: #000;
  border: 1px solid var(--accent-color);
  font-weight: 600;
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent-color);
}

/* Global Section Layout */
.section {
  padding: var(--spacing-xxl) 0;
  position: relative;
  z-index: 2;
}

.section-header {
  max-width: 900px;
  margin-bottom: var(--spacing-xl);
}

.section-label {
  font-family: var(--font-mono);
  color: var(--accent-color);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.section-title {
  font-size: 4rem;
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

/* Footer Section - Nocturnal Vector Skyline Style */
.site-footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0 var(--spacing-md) 0;
  position: relative;
  z-index: 2;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(to top, #000000 0%, transparent 100%),
    radial-gradient(circle at 50% 100%, rgba(255, 122, 0, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.footer-skyline-lines {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  height: 100px;
  border-top: 1px solid rgba(255, 255, 255, 0.01);
  display: flex;
  justify-content: space-around;
  pointer-events: none;
  z-index: 1;
}

.skyline-node {
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.01) 0%, rgba(255, 255, 255, 0) 100%);
  position: relative;
}

.skyline-node::after {
  content: "";
  position: absolute;
  top: 0;
  left: -1px;
  width: 3px;
  height: 3px;
  background-color: var(--accent-color);
  border-radius: 50%;
  opacity: 0.2;
}

.footer-container-inner {
  position: relative;
  z-index: 2;
}

.footer-hero-text {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.footer-hero-title {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: -0.05em;
  line-height: 1.1;
  color: var(--text-primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

.footer-col h4 {
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-size: 0.75rem;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-fast);
}

.footer-col ul a:hover {
  color: var(--text-primary);
}

.footer-col p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}



/* Vercel-like discreet cursor indicator */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  background-color: var(--accent-color);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

body:hover .custom-cursor {
  opacity: 1;
}

/* Lenis Scroll Smoothness config */
html.lenis {
  height: auto;
}
.lenis.lenis-smooth {
  scroll-behavior: auto;
}
.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}
.lenis.lenis-stopped {
  overflow: hidden;
}
.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
}
.whatsapp-icon {
  width: 32px;
  height: 32px;
  fill: #fff;
}