/*
  DF Importadora LTDA — Estilos globais
  - Mobile-first, responsivo, acessível
  - Tipografia legível, cores sóbrias
  - Animações sutis via classes .reveal (IntersectionObserver)
*/

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5f6b7a;
  --primary: #0A3D62; /* azul sóbrio */
  --primary-2: #1B9CFC; /* azul claro */
  --accent: #10ac84; /* verde suave para estados */
  --danger: #ee5253;
  --border: #e6e9ef;
  --card: #f8fafc;
  --focus: #ffcc00;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

/* Acessibilidade */
.skip-to-content {
  position: absolute;
  left: -9999px;
}
.skip-to-content:focus {
  left: 12px;
  top: 12px;
  background: var(--focus);
  color: #000;
  padding: 8px 12px;
  border-radius: 6px;
  z-index: 9999;
}

/* Layout */
.container { width: min(1100px, 100% - 32px); margin: 0 auto; }
.section { padding: 48px 0; }
.section-alt { padding: 56px 0; background: var(--card); }

/* Header fixo */
header {
  position: sticky; top: 0; z-index: 1000;
  backdrop-filter: saturate(180%) blur(8px);
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { display: inline-flex; align-items: center; gap: 12px; padding: 8px 0; }
.logo img { height: 32px; width: auto; }

nav ul { list-style: none; display: flex; gap: 16px; padding: 0; margin: 0; }
nav a { display: inline-block; padding: 12px 8px; color: var(--text); text-decoration: none; border-radius: 8px; }
nav a:hover { background: var(--card); }
nav a[aria-current="page"] { color: var(--primary); font-weight: 600; }

/* Hero */
.hero {
  padding: 64px 0; background: linear-gradient(135deg, var(--primary), var(--primary-2)); color: #fff;
}
.hero .container { display: grid; grid-template-columns: 1fr; gap: 24px; }
.hero h1 { font-size: clamp(1.8rem, 2.5vw, 2.6rem); margin: 0; }
.hero p { margin: 8px 0 24px; color: #eaf2ff; }
.cta-group { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; border: none; border-radius: 10px; cursor: pointer; padding: 12px 18px; font-weight: 600; }
.btn-primary { background: #fff; color: var(--primary); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.btn-outline { background: transparent; color: #fff; border: 1px solid #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); }

/* Cards & grids */
.grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 720px) { .grid.cols-3 { grid-template-columns: repeat(3, 1fr); } .grid.cols-2 { grid-template-columns: repeat(2, 1fr); } }
.card { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 16px; transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.card h3 { margin-top: 8px; }
.card p { color: var(--muted); }

/* FAQ */
details { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 12px 16px; }
details + details { margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; }

/* Depoimentos */
.testimonial { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 16px; font-style: italic; }

/* Footer */
footer { border-top: 1px solid var(--border); background: #fff; }
.footer-inner { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 16px 0; color: var(--muted); font-size: .95rem; }
footer a { color: var(--primary); text-decoration: none; }

/* Botão voltar ao topo */
#backToTop { position: fixed; right: 16px; bottom: 16px; display: none; padding: 10px 14px; border-radius: 999px; background: var(--primary); color: #fff; border: none; box-shadow: 0 6px 18px rgba(0,0,0,0.15); }
#backToTop:hover { background: var(--primary-2); }

/* Revelação suave ao rolar */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* Formulários */
form { display: grid; gap: 12px; }
label { font-weight: 600; }
input, textarea, select { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font: inherit; }
input:focus, textarea:focus, select:focus, button:focus, a:focus { outline: 3px solid var(--focus); outline-offset: 2px; }
.helper { color: var(--muted); font-size: .95rem; }

/* Banner de cookies */
.cookie-banner { position: fixed; left: 0; right: 0; bottom: 0; background: #fff; border-top: 1px solid var(--border); box-shadow: 0 -10px 30px rgba(0,0,0,0.06); padding: 16px; z-index: 2000; }
.cookie-banner .actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.cookie-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); display: none; align-items: center; justify-content: center; z-index: 2100; }
.cookie-modal .dialog { background: #fff; width: min(720px, 100% - 32px); border-radius: 12px; padding: 16px; border: 1px solid var(--border); }
.cookie-modal .preferences { display: grid; gap: 10px; margin-top: 8px; }
.cookie-badge { display: inline-block; padding: 4px 8px; border-radius: 999px; background: var(--card); border: 1px solid var(--border); font-size: .9rem; color: var(--muted); }

/* Tabelas e listas utilitárias */
.meta { color: var(--muted); font-size: .95rem; }
.hr { height: 1px; background: var(--border); margin: 24px 0; }

/* Utilidades */
.center { text-align: center; }
.m-0 { margin: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.pb-0 { padding-bottom: 0; }

/* Responsividade */
@media (min-width: 960px) {
  .header-inner { gap: 16px; }
  .hero .container { grid-template-columns: 1.2fr 0.8fr; align-items: center; }
}