/* Estilos da página inicial do Atalaia C2. Sem build nem framework: é HTML estático.
   Cores seguem o app (tema escuro, vermelho do logo). Sem estilos inline no HTML,
   porque o CSP em vercel.json só aceita estilos do próprio domínio. */
:root {
  --bg: #0f0f12;
  --bg-alt: #16161b;
  --card: #1c1c22;
  --border: #2a2a32;
  --text: #f3f3f5;
  --muted: #a1a1ab;
  --red: #c62828;
  --red-hover: #e03535;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
p { margin: 0 0 1em; }

/* Barra de topo fixa */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .75rem 1.25rem;
  background: rgb(15 15 18 / .88); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: .04em; text-decoration: none; }
.brand img { width: 36px; height: 36px; }
.nav nav { display: flex; align-items: center; gap: 1.25rem; }
.nav nav a { text-decoration: none; color: var(--muted); font-size: .95rem; }
.nav nav a:hover { color: var(--text); }
.nav nav a.btn { color: #fff; }

/* Botões */
.btn {
  display: inline-block; padding: .8rem 1.5rem; border-radius: .5rem;
  background: var(--red); color: #fff; font-weight: 600; text-decoration: none;
  border: 1px solid var(--red); transition: background .15s;
}
.btn:hover { background: var(--red-hover); }
.btn-small { padding: .45rem 1rem; font-size: .9rem; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--card); }

/* Hero */
.hero {
  max-width: 1200px; margin: 0 auto; padding: 3rem 1.25rem 2rem;
  display: grid; gap: 2rem; align-items: center; grid-template-columns: 1fr 1.2fr;
}
.eyebrow { color: var(--red-hover); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 700; }
.hero h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }
.lead { color: var(--muted); font-size: 1.1rem; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero-img { border-radius: .75rem; border: 1px solid var(--border); }

/* Seções */
.section { padding: 4rem 1.25rem; max-width: 1200px; margin: 0 auto; }
.section-alt { max-width: none; background: var(--bg-alt); }
.section-alt > * { max-width: 1160px; margin-left: auto; margin-right: auto; }
.section h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 1.5rem; }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: .75rem; padding: 1.25rem; }
.card h3 { font-size: 1.05rem; color: var(--text); }
.card p { color: var(--muted); margin: 0; font-size: .95rem; }

.kinds { list-style: none; padding: 0; margin: 0 auto 1rem; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.kinds li { display: flex; align-items: center; gap: .75rem; background: var(--card); border: 1px solid var(--border); border-radius: .75rem; padding: .9rem 1rem; font-weight: 600; }
.kinds img { width: 48px; height: 48px; flex: none; }
.note { color: var(--muted); }

.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.steps p { color: var(--muted); }
.num { display: inline-grid; place-items: center; width: 2.2rem; height: 2.2rem; border-radius: 50%; background: var(--red); font-weight: 700; margin-bottom: .75rem; }

.bullets { margin: 0 auto; padding-left: 1.2rem; color: var(--muted); }
.bullets li { margin-bottom: .5rem; }

.cta { text-align: center; padding: 4rem 1.25rem; }
.cta img { margin: 0 auto 1rem; }
.cta p { color: var(--muted); }

.footer { border-top: 1px solid var(--border); padding: 1.5rem 1.25rem; text-align: center; color: var(--muted); font-size: .9rem; }

/* Telemóvel: hero em coluna e menu só com o essencial */
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; padding-top: 2rem; }
  .nav nav a:not(.btn) { display: none; }
  .section { padding: 3rem 1.25rem; }
}