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

:root {
  --primary: #0EA5E9;
  --primary-dark: #0284C7;
  --primary-light: #38BDF8;
  --accent: #06B6D4;
  --secondary: #0F172A;
  --text: #334155;
  --text-light: #64748B;
  --text-on-dark: #CBD5E1;
  --background: #FFFFFF;
  --background-alt: #F8FAFC;
  --border: #E2E8F0;
  --success: #10B981;
  --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
  --gradient-accent: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
  --gradient-glow: linear-gradient(135deg, rgba(14,165,233,0.15) 0%, rgba(6,182,212,0.15) 100%);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--background);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  color: var(--secondary);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.2rem;
  color: var(--secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: 0 4px 20px rgba(14, 165, 233, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(14, 165, 233, 0.45);
}

.btn-secondary {
  background: rgba(255,255,255,0.1);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

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

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: white;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--text-on-dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.nav .btn-primary {
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* Hero Section */
.hero {
  padding: 160px 0 120px;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(14,165,233,0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6,182,212,0.08) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.25);
  border-radius: 50px;
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 32px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  color: white;
  margin-bottom: 24px;
}

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

.hero-description {
  font-size: 1.2rem;
  color: var(--text-on-dark);
  margin-bottom: 40px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
}

.hero-metrics {
  display: flex;
  justify-content: center;
  gap: 60px;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
  display: block;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-on-dark);
  margin-top: 4px;
}

/* Section Styles */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--gradient-glow);
  border: 1px solid rgba(14,165,233,0.2);
  border-radius: 50px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-light);
  font-size: 1.1rem;
  margin-top: 12px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--background-alt);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--background);
  padding: 36px 28px;
  border-radius: 16px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-glow);
  border-radius: 12px;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.925rem;
  line-height: 1.7;
}

/* How it Works Section */
.how-it-works {
  padding: 100px 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: calc(16.67% + 24px);
  right: calc(16.67% + 24px);
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.2;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  background: var(--gradient-accent);
  color: white;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 auto 28px;
  box-shadow: 0 8px 30px rgba(14, 165, 233, 0.25);
}

.step h3 {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.step p {
  color: var(--text-light);
  font-size: 0.925rem;
  line-height: 1.7;
  max-width: 280px;
  margin: 0 auto;
}

/* Use Cases Section */
.use-cases {
  padding: 100px 0;
  background: var(--background-alt);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.use-case-card {
  background: var(--background);
  padding: 36px 32px;
  border-radius: 16px;
  border: 1px solid var(--border);
  display: flex;
  gap: 24px;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.use-case-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.use-case-icon {
  width: 56px;
  height: 56px;
  min-width: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-glow);
  border-radius: 14px;
  font-size: 1.5rem;
}

.use-case-text h3 {
  margin-bottom: 8px;
}

.use-case-text p {
  color: var(--text-light);
  font-size: 0.925rem;
  line-height: 1.7;
}

/* CTA Section */
.cta {
  padding: 100px 0;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(14,165,233,0.1) 0%, transparent 70%);
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta h2 {
  color: white;
  margin-bottom: 16px;
}

.cta p {
  color: var(--text-on-dark);
  margin-bottom: 36px;
  font-size: 1.1rem;
}

/* Footer */
.footer {
  padding: 48px 0;
  background: #020617;
  color: white;
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-logo {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.footer-links {
  display: flex;
  gap: 32px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

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

.footer-copy {
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.825rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .hero {
    padding: 130px 0 80px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-metrics {
    gap: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .steps-grid::before {
    display: none;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-metrics {
    flex-direction: column;
    gap: 20px;
  }

  .btn-large {
    width: 100%;
    justify-content: center;
  }

  .use-case-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}