@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --robot-blue: #0066ff;
  --robot-cyan: #00d4ff;
  --robot-purple: #7c3aed;
  --text-dark: #0f172a;
  --text-muted: #475467;
  --gradient: linear-gradient(90deg, var(--robot-blue), var(--robot-cyan), var(--robot-purple));
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text-dark);
  background: linear-gradient(180deg, #f4f7ff 0%, #ffffff 55%, #f6f1ff 100%);
}

.navbar {
  background: rgba(255, 255, 255, 0.96) !important;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(16px);
}

.navbar-brand span {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
  font-size: 1.5rem;
}

.hero-card {
  background: radial-gradient(circle at top left, rgba(0, 102, 255, 0.16), transparent 55%),
    radial-gradient(circle at bottom right, rgba(124, 58, 237, 0.18), transparent 50%),
    #ffffff;
  border-radius: 32px;
  box-shadow: 0 32px 70px rgba(15, 23, 42, 0.12);
  overflow: hidden;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  background: rgba(0, 102, 255, 0.12);
  color: var(--robot-blue);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.tag {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.75rem;
}

.tag-primary {
  background: rgba(37, 99, 235, 0.15);
  color: #2563eb;
}

.tag-cyan {
  background: rgba(13, 148, 136, 0.14);
  color: #0f766e;
}

.tag-purple {
  background: rgba(124, 58, 237, 0.15);
  color: #6d28d9;
}

.feature-card {
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 18px 40px rgba(59, 130, 246, 0.12);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 60px rgba(59, 130, 246, 0.18);
}

.roadmap-card {
  border-radius: 18px;
  border: 1px solid rgba(0, 102, 255, 0.18);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 50px rgba(124, 58, 237, 0.12);
}

.cta-section {
  border-radius: 28px;
  background: linear-gradient(120deg, rgba(0, 102, 255, 0.92), rgba(0, 212, 255, 0.9), rgba(124, 58, 237, 0.94));
  color: #ffffff;
}

.cta-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
  border-radius: 16px;
}

.cta-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

footer {
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer small {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(0, 102, 255, 0.25);
  color: var(--robot-blue);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.social-link:hover,
.social-link:focus-visible {
  background: var(--robot-blue);
  color: #ffffff;
  transform: translateY(-2px);
}

.social-link img {
  width: 20px;
  height: 20px;
  transition: filter 0.2s ease;
}

.social-link:hover img,
.social-link:focus-visible img {
  filter: brightness(0) invert(1);
}

@media (max-width: 992px) {
  .hero-card {
    border-radius: 24px;
    padding: 2.5rem 2rem !important;
  }
}

@media (max-width: 576px) {
  .hero-card {
    padding: 2rem 1.5rem !important;
  }

  .display-5 {
    font-size: 2.2rem;
  }
}