/* ENERTEX ENERGIA — Design System v3.0 */
:root {
  --verde-escuro: #315E54;
  --verde-vibrante: #1AD69A;
  --laranja: #F5793B;
  --branco: #FEFEFE;
  --cinza-escuro: #333333;
  --cinza: #666666;
  --cinza-claro: #F0F0F0;
  --preto: #1a1a1a;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--branco);
  color: var(--cinza-escuro);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Sections */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--verde-escuro);
  color: var(--branco);
}

.section-gray {
  background: var(--cinza-claro);
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

h1 { font-size: 3.2em; margin-bottom: 24px; }
h2 { font-size: 2.4em; margin-bottom: 20px; }
h3 { font-size: 1.4em; margin-bottom: 12px; }

p {
  font-size: 1.05em;
  color: var(--cinza);
  margin-bottom: 16px;
}

.section-dark p { color: rgba(255,255,255,0.85); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1em;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--laranja);
  color: white;
}

.btn-primary:hover {
  background: #e06a2e;
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--verde-vibrante);
  color: var(--verde-escuro);
}

.btn-secondary:hover {
  background: #17c08a;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-outline:hover {
  background: white;
  color: var(--verde-escuro);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--verde-escuro);
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

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

.nav-logo img {
  height: 45px;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95em;
  transition: color 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.nav-links a:hover {
  color: var(--verde-vibrante);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.8em;
  cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--verde-escuro) 0%, #1a3d35 100%);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('/assets/img/hero-bg.jpg') center/cover;
  opacity: 0.15;
}

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

.hero h1 {
  color: white;
  max-width: 800px;
}

.hero h1 .accent {
  color: var(--verde-vibrante);
}

.hero p {
  font-size: 1.3em;
  color: rgba(255,255,255,0.9);
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Stats bar */
.stats-bar {
  background: var(--preto);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-size: 3em;
  font-weight: 700;
  color: var(--verde-vibrante);
  letter-spacing: -1px;
}

.stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.95em;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Cards */
.card {
  background: white;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  transition: all 0.3s;
  border: 1px solid rgba(0,0,0,0.04);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

/* Project grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 32px;
}

.project-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  transition: all 0.3s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  filter: brightness(0.85);
  transition: filter 0.3s;
}

.project-card:hover img {
  filter: brightness(1);
}

.project-card-body {
  padding: 28px;
}

.project-card h3 {
  font-size: 1.3em;
  margin-bottom: 8px;
  color: var(--verde-escuro);
}

.project-card .location {
  color: var(--cinza);
  font-size: 0.9em;
  margin-bottom: 16px;
}

.project-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--cinza-claro);
  border-radius: 8px;
}

.spec {
  font-size: 0.85em;
}

.spec-label {
  color: var(--cinza);
  display: block;
  font-size: 0.75em;
  text-transform: uppercase;
}

.spec-value {
  font-weight: 700;
  color: var(--verde-escuro);
}

.project-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--cinza-claro);
}

.status-badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75em;
  font-weight: 700;
  text-transform: uppercase;
}

.status-badge.green { background: rgba(26,214,154,0.15); color: var(--verde-escuro); }
.status-badge.orange { background: rgba(245,121,59,0.15); color: var(--laranja); }

/* Services grid */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.service-card {
  background: white;
  border-radius: 12px;
  padding: 36px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  transition: all 0.3s;
  border-left: 4px solid var(--verde-vibrante);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: var(--verde-escuro);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8em;
  margin-bottom: 24px;
}

.service-card h3 {
  font-size: 1.3em;
  margin-bottom: 12px;
  color: var(--verde-escuro);
}

.service-card p {
  color: var(--cinza);
  font-size: 0.95em;
}

/* CTA section */
.cta-section {
  background: linear-gradient(135deg, var(--verde-escuro) 0%, #1a3d35 100%);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: white;
  margin-bottom: 16px;
}

.cta-section p {
  color: rgba(255,255,255,0.9);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Footer */
.footer {
  background: var(--preto);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer h4 {
  font-size: 0.85em;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}

.footer a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.95em;
  transition: color 0.2s;
  display: block;
  margin-bottom: 8px;
}

.footer a:hover {
  color: var(--verde-vibrante);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
  font-size: 0.85em;
  text-align: center;
}

/* Form */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--cinza-escuro);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px;
  background: var(--cinza-claro);
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--cinza-escuro);
  font-family: var(--font);
  font-size: 1em;
  transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--verde-vibrante);
  background: white;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Grid 2 colunas */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* Filter bar */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 24px;
  border: 1px solid var(--cinza-claro);
  background: white;
  color: var(--cinza);
  border-radius: 25px;
  font-size: 0.85em;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--verde-escuro);
  background: var(--verde-escuro);
  color: white;
}

/* Responsivo */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--verde-escuro);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }

  .nav-links.active { display: flex; }
  .nav-toggle { display: block; }

  h1 { font-size: 2.2em; }
  h2 { font-size: 1.8em; }

  .hero { min-height: 90vh; }
  .hero p { font-size: 1.1em; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat-number { font-size: 2.2em; }

  .section { padding: 60px 0; }
  .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .project-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }

  .hero-cta { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

/* Animações */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.2s; }
.fade-in:nth-child(4) { animation-delay: 0.3s; }