/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; color: #1a1a2e; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Navigation ───────────────────────────────────────────────────────────── */
.nav { background: #0f172a; color: #f8fafc; position: sticky; top: 0; z-index: 100; }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav-brand { font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em; }
.nav-links { list-style: none; display: flex; gap: 2rem; font-size: 0.9rem; }
.nav-links a { color: #94a3b8; transition: color 0.15s; }
.nav-links a:hover, .nav-links a.active { color: #f8fafc; text-decoration: none; }

/* ── Container ────────────────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn { display: inline-block; padding: 0.625rem 1.5rem; border-radius: 0.5rem; font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: all 0.15s; }
.btn-primary { background: #6366f1; color: #fff; }
.btn-primary:hover { background: #4f46e5; text-decoration: none; }
.btn-outline { background: transparent; color: #f8fafc; border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: #fff; text-decoration: none; }
.btn-lg { padding: 0.875rem 2rem; font-size: 1.05rem; }
.btn-dark { background: #0f172a; color: #fff; }
.btn-dark:hover { background: #1e293b; text-decoration: none; }

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero { background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #1d293f 100%); color: #f8fafc; padding: 6rem 1.5rem 5rem; text-align: center; }
.hero-inner { max-width: 800px; margin: 0 auto; }
.hero-badge { display: inline-block; background: rgba(99,102,241,0.2); color: #a5b4fc; border: 1px solid rgba(99,102,241,0.4); border-radius: 999px; padding: 0.25rem 1rem; font-size: 0.8rem; font-weight: 600; margin-bottom: 1.5rem; letter-spacing: 0.05em; text-transform: uppercase; }
.hero-title { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.03em; margin-bottom: 1.25rem; }
.hero-sub { font-size: 1.15rem; color: #94a3b8; max-width: 600px; margin: 0 auto 2.5rem; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 3rem; }
.hero-quickstart { background: #0a0f1a; border: 1px solid #1e293b; border-radius: 0.75rem; padding: 1.5rem; text-align: left; max-width: 600px; margin: 0 auto; }
.hero-quickstart pre { font-size: 0.85rem; color: #7dd3fc; overflow-x: auto; }
.hero-quickstart-label { font-size: 0.8rem; color: #475569; margin-top: 0.75rem; }

/* ── Features ─────────────────────────────────────────────────────────────── */
.features { padding: 5rem 1.5rem; background: #f8fafc; }
.section-title { font-size: 2rem; font-weight: 800; text-align: center; margin-bottom: 0.75rem; }
.section-sub { text-align: center; color: #64748b; margin-bottom: 3rem; font-size: 1.05rem; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; }
.feature-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 0.75rem; padding: 1.75rem; transition: box-shadow 0.15s; }
.feature-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.feature-icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.9rem; color: #64748b; }

/* ── How it works ─────────────────────────────────────────────────────────── */
.how-it-works { padding: 5rem 1.5rem; }
.steps { list-style: none; display: flex; flex-direction: column; gap: 2rem; max-width: 700px; margin: 0 auto; }
.step { display: flex; gap: 1.5rem; align-items: flex-start; }
.step-num { flex-shrink: 0; width: 2.5rem; height: 2.5rem; border-radius: 50%; background: #6366f1; color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1rem; }
.step-body h3 { font-weight: 700; margin-bottom: 0.35rem; }
.step-body p { color: #64748b; font-size: 0.95rem; }

/* ── CTA ──────────────────────────────────────────────────────────────────── */
.cta { background: #6366f1; color: #fff; text-align: center; padding: 4rem 1.5rem; }
.cta h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.75rem; }
.cta p { font-size: 1.1rem; opacity: 0.85; margin-bottom: 2rem; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
.footer { background: #0f172a; color: #94a3b8; text-align: center; padding: 2rem 1.5rem; font-size: 0.9rem; }
.footer p + p { margin-top: 0.5rem; }
.footer a { color: #94a3b8; }
.footer a:hover { color: #f8fafc; }

/* ── Content page layout ──────────────────────────────────────────────────── */
.page-hero { background: #0f172a; color: #f8fafc; padding: 3rem 1.5rem; text-align: center; }
.page-hero h1 { font-size: 2.25rem; font-weight: 800; margin-bottom: 0.5rem; }
.page-hero p { color: #94a3b8; font-size: 1.05rem; }

.content-layout { max-width: 1200px; margin: 0 auto; padding: 3rem 1.5rem; display: grid; grid-template-columns: 220px 1fr; gap: 3rem; }
@media (max-width: 768px) { .content-layout { grid-template-columns: 1fr; } .sidebar { display: none; } }

.sidebar { position: sticky; top: 80px; align-self: start; }
.sidebar-nav h4 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: #94a3b8; margin-bottom: 0.75rem; }
.sidebar-nav ul { list-style: none; }
.sidebar-nav li + li { margin-top: 0.35rem; }
.sidebar-nav a { font-size: 0.9rem; color: #64748b; }
.sidebar-nav a:hover { color: #1a1a2e; text-decoration: none; }

.main-content h2 { font-size: 1.75rem; font-weight: 800; margin: 2.5rem 0 1rem; border-bottom: 2px solid #e2e8f0; padding-bottom: 0.5rem; }
.main-content h2:first-child { margin-top: 0; }
.main-content h3 { font-size: 1.15rem; font-weight: 700; margin: 1.75rem 0 0.5rem; }
.main-content p { color: #374151; margin-bottom: 1rem; line-height: 1.7; }
.main-content ul, .main-content ol { padding-left: 1.5rem; margin-bottom: 1rem; color: #374151; }
.main-content li { margin-bottom: 0.35rem; line-height: 1.6; }
.main-content pre { background: #0f172a; color: #7dd3fc; border-radius: 0.5rem; padding: 1.25rem; overflow-x: auto; margin: 1rem 0; font-size: 0.875rem; line-height: 1.6; }
.main-content code { background: #f1f5f9; color: #6366f1; padding: 0.15em 0.4em; border-radius: 0.25rem; font-size: 0.9em; }
.main-content pre code { background: transparent; color: inherit; padding: 0; }
.main-content table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.main-content th { background: #f1f5f9; font-weight: 700; padding: 0.625rem 0.875rem; text-align: left; border: 1px solid #e2e8f0; }
.main-content td { padding: 0.625rem 0.875rem; border: 1px solid #e2e8f0; color: #374151; }
.main-content tr:nth-child(even) td { background: #f8fafc; }

.alert { border-left: 4px solid #6366f1; background: #eef2ff; padding: 1rem 1.25rem; border-radius: 0 0.5rem 0.5rem 0; margin: 1rem 0; font-size: 0.95rem; }
.alert strong { color: #4f46e5; }

/* ── Step-by-step guide ───────────────────────────────────────────────────── */
.guide-steps { display: flex; flex-direction: column; gap: 3.5rem; margin: 2rem 0; }

.guide-step { display: grid; grid-template-columns: 2.5rem 1fr; gap: 0 1.5rem; }
.guide-step-num {
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  background: #6366f1; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1rem; flex-shrink: 0;
  position: sticky; top: 88px; align-self: start;
}
.guide-step-body { min-width: 0; }
.guide-step-body h3 { font-size: 1.2rem; font-weight: 700; margin: 0.4rem 0 0.75rem; color: #0f172a; }
.guide-step-body p { margin-bottom: 0.75rem; }

.screenshot-group { display: flex; flex-direction: column; gap: 1.5rem; margin: 1.25rem 0; }

.screenshot-frame {
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  background: #f8fafc;
}
.screenshot-frame img {
  display: block; width: 100%; height: auto;
  border-radius: 0.75rem 0.75rem 0 0;
}
.screenshot-caption {
  padding: 0.6rem 1rem;
  font-size: 0.82rem;
  color: #64748b;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
  border-radius: 0 0 0.75rem 0.75rem;
}

.screenshot-placeholder {
  width: 100%; aspect-ratio: 16/9;
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  display: flex; align-items: center; justify-content: center;
  color: #64748b; font-size: 0.9rem; font-family: monospace;
  border-radius: 0.75rem 0.75rem 0 0;
  min-height: 200px;
}

.screenshot-pair {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}
@media (max-width: 900px) { .screenshot-pair { grid-template-columns: 1fr; } }

.callout {
  display: flex; gap: 0.75rem; align-items: flex-start;
  background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 0.5rem;
  padding: 0.875rem 1rem; margin: 1rem 0; font-size: 0.92rem; color: #166534;
}
.callout-icon { font-size: 1.1rem; flex-shrink: 0; }
.callout.tip { background: #fefce8; border-color: #fde68a; color: #78350f; }
.callout.tip .callout-icon::before { content: '💡'; }
.callout.info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }
.callout.info .callout-icon::before { content: 'ℹ️'; }
.callout.success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.callout.success .callout-icon::before { content: '✅'; }

/* ── HTTP Method Badges ───────────────────────────────────────────────────── */
.badge { display: inline-block; padding: 0.15em 0.55em; border-radius: 0.3rem; font-size: 0.78rem; font-weight: 700; font-family: monospace; letter-spacing: 0.03em; }
.badge-get    { background: #dcfce7; color: #16a34a; }
.badge-post   { background: #dbeafe; color: #1d4ed8; }
.badge-put    { background: #fef9c3; color: #a16207; }
.badge-patch  { background: #fce7f3; color: #be185d; }
.badge-delete { background: #fee2e2; color: #dc2626; }