/* ==========================================================================
   EdGás - Soluções Seguras em Gás Encanado - Design System & Styles
   ========================================================================== */

:root {
  /* Color Palette */
  --primary: #0f172a;           /* Deep Executive Blue/Navy */
  --primary-accent: #0284c7;    /* Sky Tech Blue */
  --primary-glow: rgba(2, 132, 199, 0.25);
  
  --brand-orange: #f97316;      /* Safety Flame Amber/Orange */
  --brand-orange-hover: #ea580c;

  --secondary: #10b981;         /* Emerald Green (WhatsApp & Certified) */
  --secondary-hover: #059669;

  --dark-bg: #0b1329;           /* Premium Dark Slate */
  --dark-card: #152238;
  --dark-text: #f8fafc;

  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-alt: #f1f5f9;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --border: #e2e8f0;
  --border-focus: #38bdf8;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 20px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px -5px rgba(2, 132, 199, 0.15);
  --shadow-xl: 0 20px 40px -10px rgba(15, 23, 42, 0.25);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transition */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-xl);
  background: rgba(11, 19, 41, 0.98);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-orange-hover));
  color: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.4);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: white;
}

.brand-title span {
  color: var(--brand-orange);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-light);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--brand-orange);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-orange {
  background: linear-gradient(135deg, var(--brand-orange), var(--brand-orange-hover));
  color: white;
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(249, 115, 22, 0.5);
}

.btn-whatsapp {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-hover));
  color: white;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(16, 185, 129, 0.45);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
  border-color: var(--brand-orange);
  color: var(--brand-orange);
  background: rgba(249, 115, 22, 0.1);
}

.btn-lg {
  padding: 1.1rem 2.25rem;
  font-size: 1.1rem;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 5rem 0 6rem;
  background: linear-gradient(135deg, var(--dark-bg) 0%, #172554 100%);
  color: white;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(249, 115, 22, 0.15);
  color: #fb923c;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: white;
}

.hero-title span {
  background: linear-gradient(135deg, #38bdf8, var(--brand-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats-row {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat-item h4 {
  font-size: 1.75rem;
  font-weight: 800;
  color: white;
}

.hero-stat-item p {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 600;
}

/* Hero Media Wrapper */
.hero-media {
  position: relative;
}

.hero-img-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-img-wrapper img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
}

.floating-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--dark-card);
  color: white;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  z-index: 10;
}

.floating-icon {
  width: 48px;
  height: 48px;
  background: rgba(249, 115, 22, 0.2);
  color: var(--brand-orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.floating-info h5 {
  font-size: 1.1rem;
  font-weight: 800;
  color: white;
}

.floating-info p {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 600;
}

/* Proof Banner */
.proof-banner {
  background: #070d1e;
  color: white;
  padding: 2.5rem 0;
  border-y: 1px solid rgba(255, 255, 255, 0.08);
}

.proof-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.proof-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
}

.proof-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2.5rem;
  opacity: 0.85;
}

.proof-logo-item {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: white;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Services Section */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem;
}

.section-subtitle {
  color: var(--primary-accent);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-focus);
}

.service-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.service-body {
  padding: 1.75rem;
}

.service-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.service-features {
  list-style: none;
  margin-bottom: 1.5rem;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.service-features li svg {
  color: var(--secondary);
  flex-shrink: 0;
}

/* Quote Banner */
.quote-section {
  background: linear-gradient(135deg, var(--dark-bg) 0%, #172554 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  text-align: center;
  box-shadow: var(--shadow-xl);
  margin: 3rem 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.quote-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: white;
}

.quote-desc {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.quote-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.quote-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #38bdf8;
}

/* SEO Neighborhoods Section */
.seo-section {
  background: var(--bg-card);
  padding: 5rem 0;
  border-t: 1px solid var(--border);
}

.neighborhoods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 2.5rem;
}

.city-card {
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border);
}

.city-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dark-bg);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.neighborhoods-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.neighborhood-tag {
  background: white;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.neighborhood-tag:hover {
  border-color: var(--primary-accent);
  color: var(--primary-accent);
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.testimonial-stars {
  color: #f59e0b;
  display: flex;
  gap: 0.2rem;
  margin-bottom: 1rem;
}

.testimonial-quote {
  font-size: 1rem;
  font-style: italic;
  color: var(--text-main);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(2, 132, 199, 0.1);
  color: var(--primary-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.author-info h5 {
  font-size: 1rem;
  font-weight: 700;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
.footer {
  background: var(--dark-bg);
  color: var(--dark-text);
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand .brand-title {
  color: white;
}

.footer-desc {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-top: 1rem;
  max-width: 360px;
}

.footer-heading {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: white;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-light);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--brand-orange);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 64px;
  height: 64px;
  background: #25D366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  animation: bounce 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.6);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-8px); }
  60% { transform: translateY(-4px); }
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-title {
    font-size: 2.75rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-stats-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}