/* ============================================
   Landing page - estilo limpo, responsivo
   ============================================ */

* { box-sizing: border-box; }

:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --text: #1a1f2c;
  --muted: #5b6573;
  --primary: #25D366; /* WhatsApp green */
  --primary-dark: #128C7E;
  --border: #e6ebf2;
  --shadow: 0 6px 24px rgba(15, 23, 42, .06);
  --radius: 14px;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

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

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  background: var(--bg);
}
.topbar .brand {
  font-size: 18px;
  letter-spacing: .2px;
}
.brand-link { color: inherit; }
.brand-link:hover { text-decoration: none; }

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--bg-soft), #fff);
  padding: 56px 0 40px;
  text-align: center;
}
.hero h1 {
  margin: 0 0 14px;
  font-size: 34px;
  line-height: 1.2;
  letter-spacing: -.4px;
}
.hero .lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 28px;
}

.cta-form { margin: 18px 0 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 22px;
  border-radius: 999px;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
  box-shadow: var(--shadow);
}
.btn:hover { transform: translateY(-1px); }
.btn-whats {
  background: var(--primary);
  color: #fff;
  padding: 16px 28px;
  font-size: 17px;
}
.btn-whats:hover { background: var(--primary-dark); }

.micro { color: var(--muted); font-size: 13px; margin-top: 10px; }

/* Sections */
.features { padding: 40px 0; }
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.about { padding: 30px 0; background: var(--bg-soft); }
.about h2 { margin-top: 0; }
.steps { padding-left: 1.2em; color: var(--text); }
.steps li { margin-bottom: 8px; }

.faq { padding: 40px 0; }
.faq h2 { margin-top: 0; }
details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}
details summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details[open] summary { margin-bottom: 8px; }
details p { margin: 0; color: var(--muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 26px 0;
  background: #fff;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.site-footer nav { margin: 8px 0; }
.site-footer nav a { margin: 0 6px; }

/* Alert */
.alert {
  padding: 10px 14px;
  border-radius: 10px;
  margin: 12px auto;
  max-width: 560px;
  font-size: 14px;
}
.alert-error { background: #fdecec; color: #8b1d1d; border: 1px solid #f5b7b7; }
.alert-success { background: #e9f9ee; color: #1d6b35; border: 1px solid #b6e7c5; }

/* Legal pages */
.legal { padding: 30px 0 60px; }
.legal h1 { margin-top: 10px; }
.legal h2 { margin-top: 28px; font-size: 19px; }
.legal p, .legal li { color: var(--text); }
.legal em { color: var(--muted); }

/* Responsive */
@media (max-width: 720px) {
  .hero h1 { font-size: 26px; }
  .hero .lead { font-size: 16px; }
  .grid-3 { grid-template-columns: 1fr; }
}