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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --border: rgba(255, 255, 255, 0.1);
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 16px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.navbar-logo img { height: 32px; }
.navbar-right { display: flex; align-items: center; gap: 16px; }
.lang-switch {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
}
.btn {
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-card); }
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: #2563eb;
  box-shadow: 0 0 30px var(--accent-glow);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 32px 80px;
  background: radial-gradient(ellipse at 50% 0%, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
}
.hero h1 {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  font-size: clamp(16px, 2.5vw, 22px);
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
}
.hero .btn-primary {
  padding: 16px 48px;
  font-size: 18px;
  border-radius: 12px;
}

/* Features */
.features {
  padding: 80px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(10px);
  transition: all 0.3s;
}
.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  border-color: var(--accent);
}
.feature-icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.feature-card p {
  color: var(--text-secondary);
  font-size: 15px;
}

/* How it works */
.how-it-works {
  padding: 80px 32px;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}
.how-it-works h2 {
  font-size: 36px;
  margin-bottom: 48px;
}
.steps {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 200px;
  max-width: 280px;
}
.step-number {
  width: 56px;
  height: 56px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  margin: 0 auto 16px;
}
.step h3 { margin-bottom: 8px; font-size: 18px; }
.step p { color: var(--text-secondary); font-size: 14px; }

/* Pricing */
.pricing {
  padding: 80px 32px;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.pricing h2 {
  font-size: 36px;
  margin-bottom: 48px;
}
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: left;
}
.pricing-card.premium {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.05);
}
.pricing-card h3 {
  font-size: 24px;
  margin-bottom: 8px;
}
.pricing-price {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 24px;
}
.pricing-price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
}
.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}
.pricing-features li .check { color: var(--success); }
.pricing-features li .cross { color: var(--danger); opacity: 0.5; }
.coming-soon-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-left: 8px;
}

/* Auth Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  justify-content: center;
  align-items: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  margin: 16px;
}
.modal h2 {
  font-size: 24px;
  margin-bottom: 24px;
  text-align: center;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}
.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus {
  border-color: var(--accent);
}
.form-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 8px;
  display: none;
}
.form-toggle {
  text-align: center;
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}
.form-toggle a {
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

/* Footer */
.footer {
  padding: 40px 32px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar { padding: 12px 16px; }
  .hero { padding: 100px 16px 60px; }
  .features { padding: 60px 16px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; align-items: center; }
}