:root {
  color-scheme: dark;
  --bg: #060a13;
  --card: #0f1624;
  --accent: #4169e1; /* royal blue */
  --accent-strong: #223e5c; /* dark pastel blue */
  --text: #f0f4ff;
  --muted: #a7b4d6;
  --border: #1c2537;
  --shadow: 0 20px 45px rgba(4, 9, 20, 0.55);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Fira Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at top, rgba(65, 105, 225, 0.18), rgba(0, 3, 8, 0)) no-repeat var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.corner-icons {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  display: flex;
  gap: 0.75rem;
  z-index: 1000;
}

.corner-icon {
  width: 2.6rem;
  height: 2.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(15, 22, 36, 0.75);
  border: 1px solid rgba(65, 105, 225, 0.35);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 10px 25px rgba(6, 10, 19, 0.4);
}

.corner-icon svg {
  width: 1.2rem;
  height: 1.2rem;
}

.corner-icon:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 15px 30px rgba(6, 10, 19, 0.55);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 7rem 2rem 4rem;
  text-align: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), #274bdb);
  color: #f7f9ff;
  box-shadow: var(--shadow);
}


.btn.secondary {
  border: 1px solid rgba(65, 105, 225, 0.45);
  color: var(--accent);
  background: transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem 5rem;
}

.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.section h2 {
  margin-top: 0;
  font-size: 1.8rem;
}

.built-on h2 {
  text-align: center;
}

.project-list {
  list-style: disc;
  max-width: 720px;
  margin: 1.5rem auto 0;
  padding-left: 1.5rem;
}

.project-list li {
  margin-bottom: 0.5rem;
}

.project-list p {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.section ul {
  padding-left: 1.2rem;
}

.section li {
  margin-bottom: 0.8rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  background: transparent;
  padding: 0;
  border: none;
  box-shadow: none;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.8rem;
  box-shadow: var(--shadow);
}

.get-started ol {
  padding-left: 1.2rem;
}


.note {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .hero {
    padding-top: 4rem;
  }

  .section {
    padding: 2rem 1.5rem;
  }
}