/* Broletter Landing Page — Clean, light, minimal */

:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --border: #e5e7eb;
  --card-bg: #f9fafb;
  --radius: 12px;
  --max-width: 720px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─────────────────────────────────────── */

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

nav .logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}

nav .links { display: flex; gap: 24px; }
nav .links a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; }
nav .links a:hover { color: var(--fg); }

/* ─── Hero ───────────────────────────────────────── */

.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  color: var(--muted);
  max-width: 500px;
  margin: 0 auto 32px;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}

.cta:hover { background: #1d4ed8; }

.cta-secondary {
  display: inline-block;
  color: var(--accent);
  padding: 14px 32px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

/* ─── Sections ───────────────────────────────────── */

section {
  padding: 60px 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
}

/* ─── How it works ───────────────────────────────── */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.step .number {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 12px;
}

.step h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--muted); }

/* ─── Demo ───────────────────────────────────────── */

.demo-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  font-size: 14px;
  line-height: 1.7;
}

.demo-card h3 { font-size: 18px; margin-bottom: 16px; }
.demo-card .section-tag {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

/* ─── Pricing ────────────────────────────────────── */

.pricing-card {
  background: var(--card-bg);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  max-width: 400px;
  margin: 0 auto;
}

.pricing-card .price {
  font-size: 48px;
  font-weight: 800;
  color: var(--fg);
}

.pricing-card .price span { font-size: 18px; color: var(--muted); font-weight: 400; }
.pricing-card .price-note { font-size: 14px; color: var(--muted); margin: 8px 0 24px; }

.pricing-card ul {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
}

.pricing-card li {
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

.pricing-card li::before {
  content: "✓ ";
  color: var(--accent);
  font-weight: 700;
}

/* ─── FAQ ────────────────────────────────────────── */

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.faq-item summary {
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
}

.faq-item summary::after { content: "+"; color: var(--muted); }
.faq-item[open] summary::after { content: "−"; }

.faq-item p {
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ─── Use cases ──────────────────────────────────── */

.use-cases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.use-case {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.use-case h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.use-case p { font-size: 13px; color: var(--muted); }

/* ─── Footer ─────────────────────────────────────── */

footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

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

/* ─── Responsive ─────────────────────────────────── */

@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 16px; }
  .steps { grid-template-columns: 1fr; }
  .use-cases { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 32px; }
  section { padding: 40px 0; }
}