/* ============================================
   GRUPO RODOVIÁRIO JR - MAIN STYLESHEET
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #0a1628;
  --primary-light: #132240;
  --accent: #2979ff;
  --accent-light: #448aff;
  --accent-dark: #1565c0;
  --gold: #c9a84c;
  --gold-light: #d4b85c;
  --text-light: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dark: #1e293b;
  --bg-dark: #060d1a;
  --bg-section: #0c1a2e;
  --bg-card: #111d33;
  --border-color: rgba(41, 121, 255, 0.15);
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 50px rgba(0, 0, 0, 0.5);
  --transition: all 0.3s ease;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-light);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  text-align: center;
  margin-bottom: 0.5rem;
  position: relative;
}

.section-title span {
  color: var(--accent);
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Utility ---------- */
.accent { color: var(--accent); }
.gold { color: var(--gold); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 20px rgba(41, 121, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(41, 121, 255, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-light);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(41, 121, 255, 0.08);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), #b8943f);
  color: var(--primary);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(201, 168, 76, 0.4);
}

/* ---------- Top Bar ---------- */
.top-bar {
  background: var(--primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.5rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-bar-left a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
}

.top-bar-left a:hover {
  color: var(--accent);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.1);
}

/* ---------- Header / Navbar ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

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

.nav-logo img {
  height: 50px;
  width: auto;
  object-fit: contain;
}

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

.nav-logo-text .brand {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-light);
  letter-spacing: 0.05em;
  line-height: 1.1;
}

.nav-logo-text .tagline {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: rgba(41, 121, 255, 0.08);
}

.nav-cta {
  margin-left: 1rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-light);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(6, 13, 26, 0.9) 0%,
    rgba(10, 22, 40, 0.7) 50%,
    rgba(6, 13, 26, 0.85) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 6rem 0 4rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(41, 121, 255, 0.12);
  border: 1px solid rgba(41, 121, 255, 0.25);
  color: var(--accent-light);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  max-width: 700px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 550px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-family: 'Montserrat', sans-serif;
}

.hero-stat .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.25rem;
}

/* ---------- Sections Common ---------- */
section {
  padding: 5rem 0;
}

.section-dark {
  background: var(--bg-dark);
}

.section-darker {
  background: var(--bg-section);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

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

.about-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-image-badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: rgba(10, 22, 40, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.about-image-badge .badge-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.about-image-badge .badge-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.3;
}

.about-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 1.25rem;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.about-feature {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.about-feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(41, 121, 255, 0.12);
  border-radius: 8px;
  color: var(--accent);
  font-size: 1.1rem;
}

.about-feature h4 {
  font-size: 0.85rem;
  margin-bottom: 0.15rem;
}

.about-feature p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.4;
}

/* ---------- Services Section ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(41, 121, 255, 0.3);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(41, 121, 255, 0.15), rgba(41, 121, 255, 0.05));
  border-radius: 12px;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  color: var(--accent);
}

.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- Numbers / Stats Section ---------- */
.stats-section {
  position: relative;
  padding: 4rem 0;
  overflow: hidden;
}

.stats-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.stats-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.2);
}

.stats-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,13,26,0.92), rgba(10,22,40,0.88));
  z-index: 1;
}

.stats-content {
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--accent);
  font-family: 'Montserrat', sans-serif;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---------- Fleet / Gallery Section ---------- */
.fleet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.fleet-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/10;
  cursor: pointer;
}

.fleet-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.fleet-card:hover img {
  transform: scale(1.08);
}

.fleet-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6,13,26,0.85) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.fleet-card:hover .fleet-card-overlay {
  opacity: 1;
}

.fleet-card-overlay h4 {
  font-size: 1rem;
  color: #fff;
}

.fleet-card-overlay p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- Clients / Logos Section ---------- */
.clients-section {
  padding: 4rem 0;
  background: var(--primary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.clients-track {
  display: flex;
  align-items: center;
  gap: 3rem;
  animation: scroll-logos 30s linear infinite;
  width: max-content;
}

.clients-track:hover {
  animation-play-state: paused;
}

@keyframes scroll-logos {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.client-logo {
  flex-shrink: 0;
  height: 50px;
  width: auto;
  opacity: 0.5;
  filter: grayscale(100%) brightness(2);
  transition: var(--transition);
}

.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(1);
}

.clients-wrapper {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

/* ---------- Coverage Section ---------- */
.coverage-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.coverage-map {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}

.coverage-map svg {
  max-width: 100%;
  height: auto;
}

.coverage-info h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 1rem;
}

.coverage-info p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.coverage-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.coverage-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.coverage-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* ---------- Differentials Section ---------- */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.diff-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: var(--transition);
}

.diff-card:hover {
  border-color: rgba(41, 121, 255, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.diff-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(41, 121, 255, 0.15), rgba(41, 121, 255, 0.05));
  border-radius: 16px;
  font-size: 1.75rem;
  color: var(--accent);
}

.diff-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.diff-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- CTA Section ---------- */
.cta-section {
  position: relative;
  padding: 5rem 0;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
}

.cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.2);
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(41, 121, 255, 0.15), rgba(6, 13, 26, 0.95));
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: 1rem;
}

.cta-content p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---------- Contact Section ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.contact-info h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 1rem;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-detail-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(41, 121, 255, 0.12);
  border-radius: 10px;
  color: var(--accent);
}

.contact-detail h4 {
  font-size: 0.9rem;
  margin-bottom: 0.15rem;
}

.contact-detail p,
.contact-detail a {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-detail a:hover {
  color: var(--accent);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.contact-form h3 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 0.9rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(41, 121, 255, 0.15);
}

.form-control::placeholder {
  color: rgba(148, 163, 184, 0.5);
}

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

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

.form-submit {
  margin-top: 0.5rem;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--primary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer-brand img {
  height: 45px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer h4 {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ---------- WhatsApp Float ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  cursor: pointer;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

.whatsapp-pulse {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #25d366;
  animation: wapulse 2s ease-out infinite;
  z-index: -1;
}

@keyframes wapulse {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 6rem;
  z-index: 998;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---------- Loading Screen ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-logo {
  animation: pulse-loader 1.5s ease-in-out infinite;
}

.loader-logo img {
  height: 60px;
  width: auto;
  object-fit: contain;
}

@keyframes pulse-loader {
  0%, 100% { opacity: 0.4; transform: scale(0.95); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .fleet-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .coverage-content { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .top-bar { display: none; }

  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 0.5rem;
    transition: right 0.3s ease;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 1rem;
    width: 100%;
    text-align: center;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }

  .nav-overlay.active {
    display: block;
  }

  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .hero-stat .number {
    font-size: 1.75rem;
  }

  .services-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .fleet-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .coverage-list { grid-template-columns: 1fr; }
  .about-features { grid-template-columns: 1fr; }

  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }

  section { padding: 3.5rem 0; }

  .whatsapp-float {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 54px;
    height: 54px;
  }

  .back-to-top {
    right: 5rem;
    bottom: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .hero-stats { gap: 1rem; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn { width: 100%; justify-content: center; }
}