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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: #333;
}

.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
  padding: 1rem 2rem 5rem;
  min-height: 70vh;
  display: flex;
  flex-direction: column;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-brand-icon {
  width: 72px;
  height: 72px;
  display: block;
  filter: drop-shadow(0 8px 18px rgba(0, 180, 216, 0.4));
}

.nav-brand-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.nav-brand-dot {
  color: #1fc7c1;
}

@media (max-width: 480px) {
  .nav-brand-text {
    font-size: 20px;
  }
  .nav-brand-icon {
    width: 56px;
    height: 56px;
  }
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: white;
  text-decoration: none;
  opacity: 0.9;
  transition: opacity 0.2s;
}

.nav-link:hover {
  opacity: 1;
}

.nav-link.nav-cta {
  background: linear-gradient(135deg, #4f46e5, #6366f1);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 500;
}

.nav-link.nav-cta:hover {
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-toggle:focus {
  outline: 2px solid rgba(99, 102, 241, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

.hero-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.hero-badge {
  background: rgba(79, 70, 229, 0.3);
  border: 1px solid rgba(79, 70, 229, 0.5);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.brand-label {
  font-size: 1.25rem;
  font-weight: 600;
  color: #a5b4fc;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.hero-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.hero-brand-icon {
  width: 140px;
  height: auto;
  display: block;
  margin-bottom: 16px;
  filter: drop-shadow(0 12px 26px rgba(0, 180, 216, 0.4));
}

.hero-brand-text {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-brand-text .brand-name {
  color: #60a5fa;
}

.hero-brand-text .brand-tld {
  color: #14b8a6;
}

@media (max-width: 480px) {
  .hero-brand-icon {
    width: 110px;
  }
  
  .hero-brand-text {
    font-size: 1.5rem;
  }
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
  line-height: 1.1;
}

.tagline {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 600px;
}

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

.cta-button {
  background: #4f46e5;
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.cta-button:hover {
  background: #4338ca;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
}

.cta-secondary {
  color: white;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  border: 2px solid rgba(255,255,255,0.3);
  transition: border-color 0.2s, background 0.2s;
}

.cta-secondary:hover {
  border-color: white;
  background: rgba(255,255,255,0.1);
}

.stats-bar {
  background: #0f172a;
  padding: 2rem;
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
}

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

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: #60a5fa;
}

.stat-text {
  color: #94a3b8;
  font-size: 0.9rem;
}

.section-subtitle {
  text-align: center;
  color: #64748b;
  margin-top: -1.5rem;
  margin-bottom: 3rem;
}

.benefits {
  padding: 5rem 2rem;
  background: #f8fafc;
}

.benefits h2, .how-it-works h2, .pricing h2, .faq h2, .demo-section h2 {
  text-align: center;
  font-size: 2.25rem;
  margin-bottom: 3rem;
  color: #1a1a2e;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.benefit-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.benefit-card h3 {
  margin-bottom: 0.75rem;
  color: #1a1a2e;
  font-size: 1.25rem;
}

.benefit-card p {
  color: #64748b;
  font-size: 0.95rem;
}

.how-it-works {
  padding: 5rem 2rem;
  background: white;
}

.steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}

.step {
  text-align: center;
  max-width: 280px;
  padding: 1.5rem;
}

.step-arrow {
  font-size: 2rem;
  color: #cbd5e1;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1rem;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.step h3 {
  margin-bottom: 0.5rem;
  color: #1a1a2e;
}

.step p {
  color: #64748b;
  font-size: 0.95rem;
}

.demo-section {
  padding: 5rem 2rem;
  background: #f8fafc;
}

.demo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4rem;
  max-width: 1000px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.phone-mockup {
  background: #1a1a2e;
  border-radius: 36px;
  padding: 12px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.phone-screen {
  background: #f1f5f9;
  border-radius: 28px;
  width: 300px;
  height: 500px;
  overflow: hidden;
  padding: 1rem;
}

.message-thread {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
}

.message {
  max-width: 85%;
}

.message.incoming {
  align-self: flex-start;
}

.message.outgoing {
  align-self: flex-end;
}

.message-text {
  padding: 0.75rem 1rem;
  border-radius: 18px;
  font-size: 0.9rem;
}

.message.incoming .message-text {
  background: white;
  color: #333;
}

.message.outgoing .message-text {
  background: #4f46e5;
  color: white;
}

.message-label {
  font-size: 0.75rem;
  color: #64748b;
  padding: 0.5rem;
  text-align: center;
}

.message-time {
  font-size: 0.7rem;
  color: #94a3b8;
  margin-top: 0.25rem;
  text-align: right;
}

.message.incoming .message-time {
  text-align: left;
}

.demo-text {
  max-width: 400px;
}

.demo-text h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #1a1a2e;
}

.demo-text p {
  color: #64748b;
  margin-bottom: 1.5rem;
}

.demo-benefits {
  list-style: none;
}

.demo-benefits li {
  padding: 0.5rem 0;
  color: #475569;
  position: relative;
  padding-left: 1.5rem;
}

.demo-benefits li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #22c55e;
  font-weight: bold;
}

.pricing {
  padding: 5rem 2rem;
  background: #f8fafc;
}

.pricing-cards {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  width: 320px;
  position: relative;
  border: 2px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.pricing-card.featured {
  border-color: #4f46e5;
  transform: scale(1.05);
  box-shadow: 0 12px 24px rgba(79, 70, 229, 0.2);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  padding: 0.4rem 1.25rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.pricing-card h3 {
  text-align: center;
  color: #1a1a2e;
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.price {
  text-align: center;
  font-size: 3rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 0.25rem;
}

.price span {
  font-size: 1rem;
  font-weight: 400;
  color: #64748b;
}

.price-desc {
  text-align: center;
  color: #64748b;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.pricing-card ul {
  list-style: none;
  margin-bottom: 2rem;
}

.pricing-card li {
  padding: 0.6rem 0;
  color: #475569;
  border-bottom: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-card li::before {
  content: "✓";
  color: #22c55e;
  font-weight: bold;
}

.pricing-card li:last-child {
  border-bottom: none;
}

.pricing-cta {
  display: block;
  text-align: center;
  background: #1a1a2e;
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.pricing-cta:hover {
  background: #16213e;
  transform: translateY(-2px);
}

.pricing-card.featured .pricing-cta {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
}

.pricing-card.featured .pricing-cta:hover {
  opacity: 0.9;
}

.faq {
  padding: 5rem 2rem;
  background: white;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid #e2e8f0;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem 0;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: #1a1a2e;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 1.5rem;
  color: #4f46e5;
  transition: transform 0.2s;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding-bottom: 1.5rem;
}

.faq-answer p {
  color: #64748b;
  line-height: 1.7;
}

.signup {
  padding: 5rem 2rem;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
  text-align: center;
}

.signup h2 {
  color: white;
  margin-bottom: 0.5rem;
}

.signup > p {
  opacity: 0.9;
  margin-bottom: 2rem;
}

.signup-form {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 500px;
  margin: 0 auto;
}

.signup-form input {
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  flex: 1;
  min-width: 250px;
}

.signup-form button {
  background: #4f46e5;
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.signup-form button:hover {
  background: #4338ca;
  transform: translateY(-2px);
}

.signup-note {
  margin-top: 1rem;
  font-size: 0.875rem;
  opacity: 0.7;
}

.footer {
  background: #0f0f1a;
  color: #94a3b8;
  padding: 3rem 2rem 1rem;
}

.footer-content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.footer-column h4 {
  color: white;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.footer-column a {
  display: block;
  color: #94a3b8;
  text-decoration: none;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-column a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1100px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid #1e293b;
  text-align: center;
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.25rem;
  }
  
  .nav {
    position: relative;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: linear-gradient(145deg, #1e293b, #273549);
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 1rem;
    min-width: 200px;
    flex-direction: column;
    gap: 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    z-index: 1000;
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .nav-links .nav-link {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    text-align: left;
  }
  
  .nav-links .nav-link:hover {
    background: rgba(99, 102, 241, 0.1);
  }
  
  .nav-links .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }
  
  .stats-bar {
    gap: 2rem;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
  
  .step-arrow {
    display: none;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  
  .demo-container {
    flex-direction: column;
  }
  
  .phone-screen {
    width: 280px;
    height: 450px;
  }
}