:root {
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --text-main: #475569;
  --text-dark: #22375b; /* Dark blue from Go Nexora robot face */
  --text-muted: #64748b;
  --accent-blue: #329bdd; /* Lighter blue from the image background */
  --accent-blue-hover: #217cb6;
  --accent-green: #25d366; /* WhatsApp Green */
  --accent-green-hover: #128c7e;
  --border-color: #cbd5e1;
  --glow-blue: rgba(50, 155, 221, 0.3);
  --glow-green: rgba(37, 211, 102, 0.4);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #fff;
  box-shadow: 0 4px 14px var(--glow-blue);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--glow-blue);
}

.btn-whatsapp {
  background-color: var(--accent-green);
  color: #fff;
  box-shadow: 0 4px 14px var(--glow-green);
}

.btn-whatsapp:hover {
  background-color: var(--accent-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--glow-green);
}

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

.btn-outline:hover {
  background: var(--text-dark);
  color: #ffffff;
  border-color: var(--text-dark);
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

/* The logo ri-robot icon color */
.logo i {
  color: var(--accent-blue);
  font-size: 1.75rem;
}

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

.nav-links a {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--accent-blue);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 10rem 0 6rem;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #e0f2fe 0%, #ffffff 100%);
}

.hero-bg-glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(50, 155, 221, 0.15) 0%, rgba(255,255,255,0) 70%);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(37, 211, 102, 0.1);
  color: var(--accent-green-hover);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 2rem;
  border: 1px solid rgba(37, 211, 102, 0.3);
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-main);
  margin-bottom: 2.5rem;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 4rem;
}

.hero-dashboard-img {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  position: relative;
  z-index: 1;
}

.hero-dashboard-img img {
  width: 100%;
  display: block;
  border-radius: 12px;
}

.hero-dashboard-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(to top, var(--bg-main), transparent);
  border-radius: 0 0 12px 12px;
}

/* Services */
.services {
  padding: 6rem 0;
  position: relative;
  background: var(--bg-main);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
  background: #fff;
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.service-card:nth-child(1) .service-icon {
  background: rgba(37, 211, 102, 0.1);
  color: var(--accent-green-hover);
}

.service-card:nth-child(2) .service-icon {
  background: rgba(50, 155, 221, 0.1);
  color: var(--accent-blue);
}

.service-card:nth-child(3) .service-icon {
  background: rgba(168, 85, 247, 0.1);
  color: #a855f7;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.service-card p {
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.service-link {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  transition: color 0.3s;
}

.service-link:hover {
  color: var(--accent-blue);
}

/* Demos */
.demos {
  padding: 6rem 0;
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.demo-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.demo-img-wrapper {
  height: 200px;
  overflow: hidden;
  position: relative;
  background: #f1f5f9;
}

.demo-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.5s ease;
}

.demo-card:hover .demo-img-wrapper img {
  transform: scale(1.05);
}

.demo-content {
  padding: 1.5rem;
}

.demo-content h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.demo-content p {
  color: var(--text-main);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.demo-result {
  display: inline-block;
  background: rgba(37, 211, 102, 0.1);
  color: var(--accent-green-hover);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
}

/* Pricing */
.pricing {
  padding: 6rem 0;
  background: var(--bg-main);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 3rem 2rem;
  text-align: left;
  position: relative;
  transition: transform 0.3s;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.pricing-card.popular {
  border-color: var(--accent-blue);
  background: #ffffff;
  transform: scale(1.02);
  box-shadow: 0 15px 30px -5px rgba(50, 155, 221, 0.2);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-blue);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.pricing-header h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.pricing-header .price {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.pricing-header .price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-header p {
  color: var(--text-main);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2.5rem;
}

.pricing-features li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 500;
}

.pricing-features li i {
  color: var(--accent-blue);
  font-size: 1.1rem;
}

.pricing-card .btn {
  width: 100%;
}

/* Testimonials */
.testimonials {
  padding: 6rem 0;
  background: #ffffff;
  border-top: 1px solid var(--border-color);
}

.tm-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.tm-card {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.tm-stars {
  color: #fbbf24;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.tm-quote {
  font-size: 1rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
  font-weight: 500;
}

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

.tm-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--text-dark);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.25rem;
}

.tm-author-info h5 {
  font-size: 1rem;
  color: var(--text-dark);
}

.tm-author-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* About Us */
.about {
  padding: 6rem 0;
  background: var(--bg-main);
}

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

.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.about-text p {
  color: var(--text-main);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

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

.stat-item h4 {
  font-size: 2.5rem;
  color: var(--accent-blue);
  margin-bottom: 0.25rem;
}

.stat-item p {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.about-img {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}
.about-img img {
  width: 100%;
  display: block;
}

/* CTA Final */
.cta-final {
  padding: 8rem 0;
  text-align: center;
  background: var(--accent-blue);
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-final h2 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  font-weight: 800;
  color: white;
}

.cta-final p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-final .btn-whatsapp {
  font-size: 1.125rem;
  padding: 1rem 2.5rem;
  background-color: white;
  color: var(--text-dark);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.cta-final .btn-whatsapp i {
  color: var(--accent-green);
}

.cta-final .btn-whatsapp:hover {
  background-color: #f1f5f9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
  background: #ffffff;
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-color);
}

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

.footer-col h4 {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.footer-col p {
  color: var(--text-main);
  margin-bottom: 1.5rem;
  max-width: 300px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dark);
  text-decoration: none;
  transition: all 0.3s;
  border: 1px solid var(--border-color);
}

.social-links a:hover {
  background: var(--accent-blue);
  color: white;
  border-color: var(--accent-blue);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-main);
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Floating WhatsApp */
.floating-whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background-color: var(--accent-green);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  text-decoration: none;
  box-shadow: 0 4px 20px var(--glow-green);
  z-index: 1000;
  transition: transform 0.3s, box-shadow 0.3s;
  animation: bounce-subtle 3s infinite;
}

.floating-whatsapp:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px var(--glow-green);
}

@keyframes bounce-subtle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 900px) {
  .hero h1 { font-size: 2.5rem; }
  .about-content { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  }
  .nav-links.active { display: flex; }
  .mobile-menu-btn { display: block; }
  .hero-actions { flex-direction: column; }
}