/* ==========================================================================
   Aethereuum Business+ — Site Institucional (motor SiteRender)
   Design premium claro-institucional: tipografia serifada no display, corpo
   humanista, muito respiro, 5 temas por variável. Sem dependências externas
   (fontes do sistema — performance/Core Web Vitals primeiro).
   ========================================================================== */
:root {
    --si-fundo: #fbfaf7; --si-superficie: #ffffff; --si-tinta: #1d2430;
    --si-suave: #5c6675; --si-borda: #e6e2d9; --si-primaria: #35418f;
    --si-primaria-tinta: #ffffff; --si-realce: #f2efe7;
    --si-display: Georgia, 'Times New Roman', serif;
    --si-corpo: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
.si-tema-grafite   { --si-primaria: #22262e; --si-fundo: #f7f7f5; --si-borda: #e2e2df; --si-realce: #efefec; }
.si-tema-esmeralda { --si-primaria: #1e6f5c; --si-realce: #ecf4f0; }
.si-tema-oceano    { --si-primaria: #14547f; --si-realce: #eaf2f7; }
.si-tema-terracota { --si-primaria: #a2543a; --si-realce: #f7efe9; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--si-fundo); color: var(--si-tinta);
    font-family: var(--si-corpo); font-size: 16.5px; line-height: 1.65;
    -webkit-font-smoothing: antialiased; }
img { max-width: 100%; }
h1, h2, h3 { font-family: var(--si-display); font-weight: 700; line-height: 1.2;
    letter-spacing: -.01em; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); margin: 0 0 14px; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 14px; }
h3 { font-size: 1.12rem; margin: 0 0 6px; }
p { margin: 0 0 14px; }
a { color: var(--si-primaria); }
.si-container { max-width: 1120px; margin: 0 auto; padding: 0 22px; }

/* Header fixo */
.si-topo { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.92);
    backdrop-filter: blur(8px); border-bottom: 1px solid var(--si-borda); }
.si-topo-in { display: flex; align-items: center; gap: 22px; height: 66px; }
.si-logo { font-family: var(--si-display); font-size: 1.25rem; font-weight: 700;
    color: var(--si-tinta); text-decoration: none; white-space: nowrap; }
.si-nav { display: flex; gap: 4px; flex: 1 1 auto; justify-content: center; flex-wrap: wrap; }
.si-nav a { color: var(--si-suave); text-decoration: none; font-size: .95rem;
    padding: 8px 12px; border-radius: 8px; white-space: nowrap; }
.si-nav a:hover { color: var(--si-tinta); background: var(--si-realce); }
.si-nav a[aria-current="page"] { color: var(--si-primaria); font-weight: 600; }
.si-topo-acoes { display: flex; align-items: center; gap: 10px; }

/* Botões */
.si-btn { display: inline-block; padding: 11px 22px; border-radius: 10px;
    text-decoration: none; font-weight: 600; font-size: .97rem; border: 1px solid transparent; }
.si-btn-cta { background: var(--si-primaria); color: var(--si-primaria-tinta); }
.si-btn-cta:hover { filter: brightness(1.12); }
.si-btn-ghost { border-color: var(--si-borda); color: var(--si-tinta); background: var(--si-superficie); }
.si-btn-ghost:hover { border-color: var(--si-primaria); }
.si-btn-lg { padding: 14px 30px; font-size: 1.05rem; }
.si-link { font-weight: 600; text-decoration: none; }
.si-link:hover { text-decoration: underline; }

/* Menu mobile (hambúrguer) */
.si-menu-btn { display: none; flex-direction: column; gap: 4px; background: none;
    border: 1px solid var(--si-borda); border-radius: 8px; padding: 10px 9px; cursor: pointer; }
.si-menu-btn span { width: 18px; height: 2px; background: var(--si-tinta); display: block; }
@media (max-width: 900px) {
    .si-menu-btn { display: flex; }
    .si-nav { display: none; position: absolute; top: 66px; left: 0; right: 0;
        background: var(--si-superficie); border-bottom: 1px solid var(--si-borda);
        flex-direction: column; padding: 10px 16px 16px; gap: 2px; }
    .si-nav.aberto { display: flex; }
    .si-topo-in { justify-content: space-between; }
    .si-topo-acoes .si-btn { padding: 9px 14px; font-size: .9rem; }
}

/* Hero */
.si-hero { padding: 84px 0 64px; text-align: center;
    background: linear-gradient(180deg, var(--si-realce), var(--si-fundo)); }
.si-hero-slogan { font-size: clamp(1.05rem, 2.4vw, 1.35rem); color: var(--si-suave);
    max-width: 640px; margin: 0 auto 10px; }
.si-hero-desc { max-width: 620px; margin: 0 auto 8px; color: var(--si-suave); }
.si-hero-acoes { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }

/* Seções e cartões */
.si-secao { padding: 56px 0; }
.si-secao-alt { background: var(--si-superficie); border-block: 1px solid var(--si-borda); }
.si-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; margin: 18px 0; }
.si-card { background: var(--si-superficie); border: 1px solid var(--si-borda);
    border-radius: 14px; padding: 20px; }
.si-card-meta { color: var(--si-suave); font-size: .92rem; }
.si-card-preco { font-weight: 700; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.si-depo { font-style: italic; margin: 0; }
.si-depo footer { font-style: normal; color: var(--si-suave); margin-top: 8px; font-size: .92rem; }
.si-pessoa { text-align: center; }
.si-avatar { display: inline-flex; align-items: center; justify-content: center;
    width: 58px; height: 58px; border-radius: 50%; background: var(--si-realce);
    color: var(--si-primaria); font-family: var(--si-display); font-size: 1.4rem;
    font-weight: 700; margin-bottom: 10px; }

/* Páginas internas */
.si-pagina { padding: 44px 22px 70px; }
.si-breadcrumb { font-size: .88rem; color: var(--si-suave); margin-bottom: 18px; }
.si-breadcrumb a { color: inherit; }
.si-faq-item { border: 1px solid var(--si-borda); border-radius: 12px;
    background: var(--si-superficie); padding: 4px 18px; margin-bottom: 10px; }
.si-faq-item summary { cursor: pointer; font-weight: 600; padding: 12px 0; }
.si-faq-item p { color: var(--si-suave); padding-bottom: 12px; }
.si-convenios { columns: 2; gap: 24px; padding-left: 20px; }
@media (max-width: 640px) { .si-convenios { columns: 1; } }
.si-galeria { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.si-galeria img { border-radius: 12px; aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.si-contato p { margin-bottom: 12px; }
.si-nota { color: var(--si-suave); font-size: .92rem; }

/* CTA blocks (CRO) */
.si-cta-bloco { margin-top: 42px; padding: 30px; border-radius: 16px;
    background: var(--si-realce); border: 1px solid var(--si-borda); text-align: center; }
.si-cta-final { background: var(--si-primaria); color: var(--si-primaria-tinta); text-align: center; }
.si-cta-final h2 { color: inherit; }
.si-cta-final p { color: inherit; opacity: .85; }
.si-cta-final .si-btn-cta { background: var(--si-primaria-tinta); color: var(--si-primaria); }
.si-cta-final .si-btn-ghost { border-color: rgba(255,255,255,.4); color: var(--si-primaria-tinta); background: transparent; }

/* WhatsApp flutuante */
.si-wa-flutuante { position: fixed; right: 18px; bottom: 18px; z-index: 60;
    width: 54px; height: 54px; border-radius: 50%; background: #25d366; color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
    text-decoration: none; box-shadow: 0 8px 22px rgba(0,0,0,.22); }
.si-wa-flutuante:hover { transform: scale(1.06); }

/* Rodapé */
.si-rodape { background: var(--si-superficie); border-top: 1px solid var(--si-borda);
    padding: 40px 0 26px; margin-top: 40px; }
.si-rodape-grid { display: flex; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.si-rodape-nome { font-family: var(--si-display); font-size: 1.1rem; }
.si-rodape p { color: var(--si-suave); font-size: .92rem; margin: 6px 0 0; }
.si-rodape-nav { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: flex-start; }
.si-rodape-nav a { color: var(--si-suave); text-decoration: none; font-size: .9rem; }
.si-rodape-nav a:hover { color: var(--si-tinta); }
.si-rodape-base { border-top: 1px solid var(--si-borda); margin-top: 24px; padding-top: 16px;
    color: var(--si-suave); font-size: .85rem; display: flex; gap: 14px; flex-wrap: wrap; }
.si-rodape-base a { color: inherit; }

/* Formulário fallback (contato) */
.si-form { display: grid; gap: 12px; max-width: 520px; margin-top: 10px; }
.si-form label { display: grid; gap: 4px; font-weight: 600; font-size: .93rem; }
.si-form input, .si-form textarea { width: 100%; box-sizing: border-box; padding: 10px 12px;
    border: 1px solid var(--si-borda); border-radius: 10px; font: inherit; background: var(--si-superficie); }
.si-form button { justify-self: start; cursor: pointer; font: inherit; }