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

:root {
  --bg:          #ffffff;
  --bg-alt:      #f8fafc;
  --dark:        #0f172a;
  --accent:      #0ea5e9;
  --accent-dark: #0284c7;
  --text:        #334155;
  --muted:       #64748b;
  --border:      #e2e8f0;
  --font:        'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --radius:      8px;
  --max-width:   960px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── Navigation ─── */
.nav {
  background: var(--dark);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav__logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
}
.nav__logo:hover { text-decoration: none; }
.nav__links { display: flex; gap: 1.5rem; }
.nav__links a {
  color: #94a3b8;
  font-size: 0.875rem;
  font-weight: 500;
}
.nav__links a:hover { color: #fff; text-decoration: none; }

/* ─── Hero ─── */
.hero {
  background: var(--dark);
  padding: 5rem 0 4.5rem;
  text-align: center;
  border-bottom: 1px solid #1e293b;
}
.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid #1e3a4e;
  background: rgba(14, 165, 233, 0.08);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: clamp(3.5rem, 10vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  color: #fff;
  margin-bottom: 1.25rem;
}
.hero__tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: #94a3b8;
  margin-bottom: 1.5rem;
}
.hero__description {
  font-size: 1rem;
  color: #cbd5e1;
  max-width: 580px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}
.hero__cta {
  display: flex;
  gap: 0.875rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Buttons ─── */
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
  transition: opacity 0.15s, box-shadow 0.15s;
}
.btn:hover { opacity: 0.88; text-decoration: none; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--outline {
  background: transparent;
  color: #94a3b8;
  border: 1px solid #334155;
}
.btn--outline:hover { border-color: #64748b; color: #fff; }

/* ─── Sections ─── */
.section { padding: 4.5rem 0; }
.section--alt { background: var(--bg-alt); }
.section--dark {
  background: var(--dark);
  color: #fff;
  text-align: center;
}
.section__title {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--dark);
  margin-bottom: 0.5rem;
}
.section__lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 2.25rem;
}
.section--dark .section__title { color: #fff; }
.section--dark .section__lead { color: #94a3b8; margin-bottom: 2rem; }
.section--dark strong { color: #fff; }
.section--dark code {
  font-family: 'Courier New', Courier, monospace;
  background: rgba(255,255,255,0.08);
  color: var(--accent);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.95em;
}

/* ─── Querqy library layout ─── */
.library {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: start;
}
.library__text p {
  margin-bottom: 1rem;
  color: var(--text);
}
.library__links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 1.5rem;
}
.library__links a { font-weight: 500; font-size: 0.95rem; }

.integrations__label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 1rem;
}
.integration-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.integration-card {
  display: flex;
  flex-direction: column;
  padding: 1rem 1rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.integration-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.08);
  text-decoration: none;
}
.integration-card__name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark);
  margin-bottom: 0.2rem;
}
.integration-card__desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ─── Ecosystem cards ─── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.75rem;
}
.card__body {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.1rem;
  line-height: 1.65;
}
.card__links {
  display: flex;
  gap: 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
}

/* ─── Resources ─── */
.resource-list { display: flex; flex-direction: column; }
.resource {
  display: block;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}
.resource:first-child { border-top: 1px solid var(--border); }
.resource:hover { text-decoration: none; }
.resource:hover .resource__title { color: var(--accent); }
.resource__title {
  display: block;
  font-weight: 600;
  font-size: 0.975rem;
  margin-bottom: 0.3rem;
  transition: color 0.15s;
}
.resource__meta {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.3rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.resource__desc {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ─── People ─── */
.people-list {
  list-style: none;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}
.people-list li {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--text);
}

/* ─── Footer ─── */
.footer {
  background: var(--dark);
  color: #475569;
  padding: 1.5rem 0;
  font-size: 0.825rem;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer a { color: #475569; }
.footer a:hover { color: #94a3b8; }

/* ─── Responsive ─── */
@media (max-width: 720px) {
  .library { grid-template-columns: 1fr; gap: 2rem; }
  .integration-grid { grid-template-columns: 1fr 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .hero { padding: 3.5rem 0 3rem; }
  .section { padding: 3rem 0; }
}

@media (max-width: 480px) {
  .integration-grid { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
}