:root {
  --bg: #07070a;
  --surface: #0f0f14;
  --surface-hover: #141419;
  --border: #1a1a22;
  --text: #f4f4f5;
  --text-muted: #6b6b7b;
  --text-subtle: #3f3f4a;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --cyan: #22d3ee;
  --violet: #a78bfa;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
  background: rgba(7, 7, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.nav-status {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--surface);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 40px 80px;
}

.hero-content {
  max-width: 1100px;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 460px;
}

.hero-visual {
  perspective: 1000px;
}

.dashboard-mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transform: rotateY(-8deg) rotateX(4deg);
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05) inset;
}

.mock-header {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.mock-content {
  display: flex;
  height: 280px;
}

.mock-sidebar {
  width: 48px;
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-nav-item {
  height: 24px;
  background: var(--border);
  border-radius: 6px;
}

.mock-nav-item.active {
  background: var(--accent);
  opacity: 0.6;
}

.mock-main {
  flex: 1;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
}

.mock-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}

.mock-label {
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mock-line {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  margin-bottom: 6px;
}

.mock-line.full { width: 100%; }
.mock-line.medium { width: 70%; }
.mock-line.short { width: 50%; }

.mock-badge {
  display: inline-block;
  font-size: 9px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
  margin-right: 6px;
  margin-bottom: 4px;
}

/* Problem */
.problem {
  padding: 100px 40px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 80px;
  align-items: start;
}

.problem-stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 80px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-size: 16px;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 200px;
  line-height: 1.4;
}

.problem-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text-muted);
  font-size: 15px;
}

.problem-icon {
  color: var(--text-subtle);
  font-size: 14px;
  margin-top: 2px;
}

/* Features */
.features {
  padding: 120px 40px;
  background: var(--bg);
}

.features-header {
  text-align: center;
  margin-bottom: 80px;
}

.features-header h2 {
  font-size: 48px;
  color: var(--text);
  margin-bottom: 16px;
}

.features-header p {
  font-size: 18px;
  color: var(--text-muted);
}

.features-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}

.feature-icon {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* How It Works */
.how-it-works {
  padding: 120px 40px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.hiw-header {
  text-align: center;
  margin-bottom: 80px;
}

.hiw-header h2 {
  font-size: 48px;
  color: var(--text);
}

.hiw-steps {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.hiw-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  align-items: start;
  padding: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.step-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
}

.step-content h4 {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Closing */
.closing {
  padding: 160px 40px;
  background: var(--bg);
  text-align: center;
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
}

.closing-inner h2 {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.2;
}

.closing-inner p {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
}

.closing-meta {
  font-size: 14px;
  color: var(--text-subtle);
}

.closing-meta .separator {
  margin: 0 12px;
}

/* Footer */
.footer {
  padding: 60px 40px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-links {
  font-size: 13px;
  color: var(--text-subtle);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .hero-visual {
    display: none;
  }
  
  .problem-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .hiw-step {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .nav, .hero, .problem, .features, .how-it-works, .closing, .footer {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .problem-items {
    grid-template-columns: 1fr;
  }
  
  .stat-number {
    font-size: 56px;
  }
  
  .footer-inner {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}