:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.1);
  --secondary: #0ea5e9;
  --accent: #10b981;
  --accent-hover: #059669;
  --dark: #0f172a;
  --dark-surface: #1e293b;
  --dark-border: #334155;
  --light-bg: #f8fafc;
  --light-surface: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--light-bg);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.badge-accent {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.025em;
  margin-top: 12px;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  border: 1px solid transparent;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(180deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  border: 1px solid #1e40af;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  background: linear-gradient(180deg, #1d4ed8 0%, #1e40af 100%);
  border-color: #172554;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background-color: #ffffff;
  color: #334155;
  border: 1px solid #cbd5e1;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  background-color: #f8fafc;
  color: #0f172a;
  border-color: #94a3b8;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
  background-color: #f1f5f9;
}

.btn-whatsapp {
  background: linear-gradient(180deg, #25d366 0%, #20ba5a 100%);
  color: #ffffff;
  border: 1px solid #1ba34e;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-whatsapp:hover {
  background: linear-gradient(180deg, #20ba5a 0%, #189848 100%);
  border-color: #127436;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 13px 26px;
  font-size: 1rem;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
}

.nav-brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 900;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  color: #475569;
  transition: var(--transition);
  font-size: 0.925rem;
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-cta .btn {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--dark);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 100px 0 80px;
  background: radial-gradient(circle at 50% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 60%);
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--dark);
  letter-spacing: -0.035em;
  margin: 20px 0;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #1d4ed8 0%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-trust-item svg {
  color: var(--accent);
}

.hero-preview {
  margin-top: 60px;
  border-radius: var(--radius-xl);
  padding: 10px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: var(--shadow-xl);
}

.hero-preview-inner {
  border-radius: calc(var(--radius-xl) - 4px);
  overflow: hidden;
  background: #0f172a;
  border: 1px solid #1e293b;
  position: relative;
}

.mockup-header {
  background: #1e293b;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #334155;
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-dot.red { background: #ef4444; }
.mockup-dot.yellow { background: #f59e0b; }
.mockup-dot.green { background: #10b981; }

.mockup-title {
  color: #94a3b8;
  font-size: 0.8rem;
  font-family: monospace;
}

/* Quick Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--light-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.3);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.feature-list {
  margin-top: 18px;
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 8px;
}

.feature-list li svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Architecture Highlight Banner */
.architecture-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  margin: 100px 0;
  position: relative;
  overflow: hidden;
}

.architecture-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.arch-text h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.25;
}

.arch-text p {
  color: #94a3b8;
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 28px;
}

.arch-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.spec-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: var(--radius-md);
}

.spec-item h4 {
  font-size: 1.05rem;
  color: #ffffff;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.spec-item p {
  font-size: 0.85rem;
  color: #94a3b8;
  margin: 0;
}

/* Pricing Section */
.pricing-section {
  padding: 100px 0;
  background: #f1f5f9;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.pricing-card {
  background: var(--light-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.15);
  transform: scale(1.03);
  z-index: 10;
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
}

.featured-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #ffffff;
  padding: 4px 16px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.plan-header {
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-price-wrapper {
  margin: 24px 0 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.plan-price {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--dark);
  line-height: 1;
}

.plan-period {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.plan-features {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.925rem;
  color: var(--text-main);
  margin-bottom: 14px;
  line-height: 1.4;
}

.plan-features li svg {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

/* Contact / Demo Form Section */
.contact-section {
  padding: 100px 0;
  background: #ffffff;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.contact-info h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.25;
}

.contact-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.channel-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--light-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.channel-card:hover {
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: var(--shadow-md);
}

.channel-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.channel-icon.whatsapp {
  color: #25d366;
}

.contact-form-card {
  background: var(--light-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-xl);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--dark);
  transition: var(--transition);
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* FAQ Section */
.faq-section {
  padding: 80px 0;
  background: var(--light-bg);
}

.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
}

.faq-question svg {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

/* Footer */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 70px 0 30px;
  border-top: 1px solid #1e293b;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 16px;
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.55);
}

/* Responsive */
@media (max-width: 1100px) {
  .nav-links {
    gap: 16px;
  }
  .nav-links a {
    font-size: 0.875rem;
  }
  .nav-brand span {
    font-size: 1.05rem;
  }
  .nav-cta .btn {
    padding: 7px 12px;
    font-size: 0.825rem;
  }
}

@media (max-width: 992px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .arch-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 920px) {
  .nav-links, .nav-cta {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: #ffffff;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}