/*
 * INSOLAR BRASIL — app.css
 *
 * Folha de estilos pequena e organizada por responsabilidade:
 * 1. Variáveis e reset
 * 2. Componentes reutilizáveis
 * 3. Seções da página
 * 4. Estados e responsividade
 */

/* 1. Variáveis centrais: altere a identidade visual aqui. */
:root {
  --blue-950: #10243d;
  --blue-900: #163d62;
  --blue-700: #1769aa;
  --blue-500: #2b86ca;
  --blue-100: #e8f3fc;
  --gold-500: #f7b955;
  --ink: #10243d;
  --muted: #405a72;
  --surface: #f5f8fc;
  --white: #fff;
  --line: #d9e4ee;
  --radius: 18px;
  --shadow: 0 18px 45px rgb(16 36 61 / 12%);
  --content: 1160px;
}

/* 2. Reset previsível e base acessível. */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--gold-500); outline-offset: 4px; }

/* Classes utilitárias usadas pelo JavaScript. */
.container { width: min(var(--content), calc(100% - 40px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* 3. Cabeçalho: usa somente a logo horizontal original. */
.site-header { position: sticky; top: 0; z-index: 20; background: var(--blue-950); color: var(--white); box-shadow: 0 4px 18px rgb(16 36 61 / 18%); }
.navbar { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo-top { width: 156px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--white); font-size: .95rem; font-weight: 700; }
.nav-links a:hover { color: var(--gold-500); }
.menu-button { display: none; border: 0; background: transparent; color: var(--white); font-size: 1.6rem; }

/* Botões: uma única regra de aparência para manter consistência. */
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border: 0; border-radius: 999px; background: var(--gold-500); color: var(--blue-950); font-weight: 850; transition: transform .2s ease, filter .2s ease; }
.button:hover { transform: translateY(-2px); filter: brightness(1.05); }
.button.secondary { background: var(--white); color: var(--blue-950); }

/* Hero: mensagem principal e prova visual. */
.hero { padding: 92px 0 82px; color: var(--white); background: linear-gradient(135deg, var(--blue-950), var(--blue-900) 58%, var(--blue-700)); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 60px; }
.eyebrow { margin: 0 0 14px; color: var(--gold-500); font-size: .82rem; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0 0 22px; font-size: clamp(2.8rem, 6vw, 5.5rem); line-height: .98; letter-spacing: -.055em; }
.hero p { max-width: 600px; margin: 0 0 28px; color: #fff; font-size: 1.18rem; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { min-height: 330px; display: grid; place-items: center; }
.sun { width: min(300px, 70vw); aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, #fff5cf 0 20%, var(--gold-500) 21% 38%, transparent 39%), repeating-radial-gradient(circle, rgb(247 185 85 / 30%) 0 2px, transparent 3px 25px); box-shadow: 0 0 0 30px rgb(255 255 255 / 5%), 0 0 80px rgb(247 185 85 / 30%); }

/* Seções comuns e cartões. */
.section { padding: 86px 0; }
.section-heading { max-width: 720px; margin-bottom: 36px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section h2 { margin: 0 0 12px; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.08; }
.section-lead { margin: 0; color: var(--muted); font-size: 1.08rem; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: 0 8px 24px rgb(16 36 61 / 6%); }
.card h3 { margin: 12px 0 8px; font-size: 1.25rem; }
.card p { margin: 0; color: var(--muted); }
.card-number { color: var(--blue-700); font-weight: 900; }

/* Simulador simples e legível. */
.simulator { color: var(--white); background: var(--blue-950); }
.simulator-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 50px; }
.simulator .section-lead { color: #dcecff; }
.calculator { padding: 30px; border-radius: var(--radius); background: var(--white); color: var(--ink); box-shadow: var(--shadow); }
.calculator label { display: block; margin-bottom: 10px; font-weight: 800; }
.calculator input[type="range"] { width: 100%; accent-color: var(--blue-700); }
.calculator-result { margin-top: 22px; padding: 18px; border-radius: 14px; background: var(--blue-100); }
.calculator-result strong { display: block; color: var(--blue-700); font-size: 2rem; }

/* Vídeo, processo e FAQ. */
.video-grid, .contact-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 48px; }
.video-box { overflow: hidden; border-radius: var(--radius); background: var(--blue-950); box-shadow: var(--shadow); }
.video-box video { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { padding: 20px; border-top: 4px solid var(--blue-500); background: var(--white); }
.step strong { display: block; margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question { width: 100%; padding: 20px 0; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 800; }
.faq-answer { margin: 0; padding: 0 0 20px; color: var(--muted); }

/* Bloco final e rodapé: usa somente a marca quadrada original embaixo. */
.contact { color: var(--white); background: linear-gradient(135deg, var(--blue-900), var(--blue-700)); }
.contact .section-lead { color: #fff; }
.site-footer { padding: 46px 0; background: #0a1828; color: var(--white); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo-bottom { width: 66px; height: 66px; object-fit: contain; }
.site-footer p { margin: 0; color: #dcecff; }

/* 4. Estados responsivos e acessíveis. */
@media (max-width: 800px) {
  .container { width: min(var(--content), calc(100% - 28px)); }
  .menu-button { display: block; }
  .nav-links { display: none; position: absolute; top: 78px; left: 0; right: 0; padding: 20px; flex-direction: column; align-items: flex-start; background: var(--blue-950); }
  .nav-links.is-open { display: flex; }
  .hero { padding: 68px 0; }
  .hero-grid, .simulator-grid, .video-grid, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .card-grid, .steps { grid-template-columns: 1fr; }
  .hero-art { min-height: 240px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
}