:root {
  --purple: #7c3aed;
  --cyan: #06b6d4;
  --ink: #0f172a;
  --slate: #475569;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --radius: 14px;
  --grad: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; }
.brand:hover { text-decoration: none; }
.nav { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.nav a { color: var(--slate); font-weight: 500; }
.nav a:hover { color: var(--ink); text-decoration: none; }
.nav-cta {
  background: var(--grad);
  color: #fff !important;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
}
.nav-cta:hover { opacity: 0.92; }

/* Hero */
.hero {
  background: radial-gradient(1200px 500px at 50% -100px, rgba(124, 58, 237, 0.12), transparent),
              radial-gradient(900px 400px at 80% 0, rgba(6, 182, 212, 0.12), transparent);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}
.hero-inner { max-width: 820px; margin: 0 auto; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--purple);
  margin: 0 0 0.75rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1.2rem;
  letter-spacing: -0.02em;
}
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--slate);
  max-width: 680px;
  margin: 0 auto 2rem;
}
.hero-actions {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid var(--border); }

.providers {
  display: flex;
  gap: 0.5rem 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  color: var(--slate);
  font-weight: 600;
  font-size: 0.95rem;
}
.providers span { opacity: 0.75; }

/* Sections */
.section { max-width: 1080px; margin: 0 auto; padding: 4.5rem 1.5rem; }
.section-alt { background: var(--bg-alt); max-width: none; }
.section-alt > * { max-width: 1080px; margin-left: auto; margin-right: auto; }
.section h2, .cta-band h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  text-align: center;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.section-lede {
  text-align: center;
  color: var(--slate);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  font-size: 1.08rem;
}

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.card-icon { font-size: 2rem; }
.card h3 { margin: 0.6rem 0 0.4rem; font-size: 1.2rem; }
.card p { margin: 0; color: var(--slate); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; margin-bottom: 2.5rem; }
.step { display: flex; gap: 1rem; align-items: flex-start; }
.step-num {
  flex: none;
  width: 2.2rem; height: 2.2rem;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--grad);
  color: #fff;
  font-weight: 700;
}
.step h3 { margin: 0.2rem 0 0.3rem; font-size: 1.1rem; }
.step p { margin: 0; color: var(--slate); }

.endpoints { display: grid; gap: 0.6rem; max-width: 560px; margin: 0 auto; }
.endpoints code {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.95rem;
}
.m { font-weight: 700; padding: 0.1rem 0.5rem; border-radius: 6px; font-size: 0.8rem; color: #fff; }
.m.get { background: #06b6d4; }
.m.post { background: #7c3aed; }

/* Data model */
.model-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.model-col {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.model-col h3 { margin: 0 0 1rem; font-size: 1.3rem; }
.model-col ul { margin: 0; padding-left: 1.1rem; color: var(--slate); }
.model-col li { margin-bottom: 0.5rem; }
code {
  background: var(--bg-alt);
  border-radius: 5px;
  padding: 0.1rem 0.35rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
}

/* CTA band */
.cta-band {
  text-align: center;
  background: var(--grad);
  color: #fff;
  padding: 4rem 1.5rem;
}
.cta-band h2 { color: #fff; }
.cta-band p { margin: 0 auto 2rem; max-width: 540px; opacity: 0.95; }
.cta-band .btn-primary { background: #fff; color: var(--purple); }
.cta-band .btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.6); }

/* Footer */
.site-footer {
  text-align: center;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border);
}
.site-footer p { margin: 0.75rem auto 0; color: var(--slate); max-width: 520px; }
.site-footer .muted { font-size: 0.85rem; opacity: 0.8; }

/* API page */
.api-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 20;
}
.api-topbar .back { color: var(--slate); font-weight: 600; }
#redoc-container { min-height: 70vh; }