/* ===== AF4 Mobility — Design tokens (docs/AF4_Mobility_Design_System.md) ===== */
:root {
  --bg: #070B12;
  --bg-secondary: #0D131D;
  --surface: #111923;
  --surface-hover: #172231;

  --border: #263241;

  --text-primary: #FFFFFF;
  --text-secondary: #B8C0CC;
  --text-muted: #7F8997;

  --brand-blue: #0B1F3A;
  --accent: #FF6A00;
  --accent-hover: #FF7A1A;
  --success: #35C98A;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  --container: 1280px;
  --header-h: 80px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 80px;

  --font-body: 'Inter', Arial, Helvetica, sans-serif;
  --font-head: 'Montserrat', 'Inter', Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-secondary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: clamp(20px, 5vw, 56px);
  padding-right: clamp(20px, 5vw, 56px);
}

.eyebrow-line {
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin: 14px auto 20px;
}

h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--text-primary);
  margin: 0;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  padding: 14px 26px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 200ms, border-color 200ms, transform 200ms;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--surface); }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  padding: 0;
}
.btn-ghost:hover { color: var(--accent); }
.btn-ghost svg { transition: transform 200ms; }
.btn-ghost:hover svg { transform: translateX(3px); }

.btn-light {
  background: #fff;
  color: var(--brand-blue);
}
.btn-light:hover { background: #E9EBEE; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 18, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 56px);
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.logo-word {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 22px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.logo-word span { color: var(--accent); }
.logo-sub {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 1.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 200ms;
}
.main-nav a:hover { color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 24px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle svg { display: block; }

.mobile-menu {
  position: sticky;
  top: var(--header-h);
  z-index: 99;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: none;
  flex-direction: column;
  gap: 20px;
  padding: 24px clamp(20px, 5vw, 56px);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a { font-size: 16px; font-weight: 500; color: var(--text-primary); }
.mobile-menu .btn { width: 100%; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(160deg, var(--bg-secondary) 0%, var(--bg) 60%);
  padding: clamp(48px, 8vw, 88px) clamp(20px, 5vw, 56px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 48px;
  max-width: var(--container);
  margin: 0 auto;
}
.hero-content { flex: 1 1 420px; min-width: 320px; }
.hero-content h1 {
  font-weight: 800;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  text-transform: uppercase;
}
.hero-content h1 span { color: var(--accent); }
.hero-lede {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 420px;
  margin: 20px 0 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  margin-top: 32px;
}
.hero-media { flex: 1 1 420px; min-width: 320px; }
.hero-media-frame {
  width: 100%;
  aspect-ratio: 1.05 / 1;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  background: var(--surface);
  position: relative;
}
.hero-media-frame img { width: 100%; height: 100%; object-fit: contain; }
.hero-media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,11,18,0) 55%, rgba(7,11,18,0.55) 100%);
  pointer-events: none;
}

/* ===== Section heading ===== */
.section-heading {
  text-align: center;
  max-width: 620px;
  margin: 0 auto;
}
.section-heading h2 {
  font-weight: 800;
  font-size: clamp(26px, 3.5vw, 36px);
  text-transform: uppercase;
}
.section-heading p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
}

/* ===== Equipamentos ===== */
.solucoes {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 56px);
  max-width: var(--container);
  margin: 0 auto;
}
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 32px;
  margin-top: 48px;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 200ms, border-color 200ms;
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: #354256;
}
.product-media {
  height: 520px;
  overflow: hidden;
  background: var(--bg-secondary);
}
.product-media img { width: 100%; height: 100%; object-fit: contain; }
.product-body { padding: 28px; }
.product-body h3 { font-weight: 700; font-size: 22px; }
.product-tag {
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  margin: 10px 0 8px;
}
.product-rule {
  width: 32px;
  height: 2px;
  background: var(--border);
  margin-bottom: 14px;
}
.product-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.55;
  margin: 0 0 20px;
}
.product-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}
.product-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  min-width: 100px;
  flex: 1 1 110px;
  list-style: none;
}
.product-benefits svg { margin-top: 2px; flex-shrink: 0; }

/* ===== Sobre / diferenciais ===== */
.sobre {
  background: var(--bg-secondary);
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 56px);
}
.sobre-intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.sobre-intro h2 {
  font-weight: 800;
  font-size: clamp(24px, 3.2vw, 32px);
  text-transform: uppercase;
}
.sobre-intro p {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
  margin: 0;
}
.diferenciais-title {
  text-align: center;
  margin-bottom: 40px;
}
.diferenciais-title h3 {
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 26px);
  text-transform: uppercase;
}
.diferenciais-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.diferencial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.diferencial-card svg { flex-shrink: 0; }
.diferencial-card strong {
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 700;
}
.diferencial-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ===== CTA final ===== */
.cta-final {
  padding: clamp(40px, 6vw, 64px) clamp(20px, 5vw, 56px) clamp(56px, 8vw, 88px);
  max-width: var(--container);
  margin: 0 auto;
}
.cta-final-box {
  background: var(--brand-blue);
  border-radius: var(--radius-xl);
  padding: clamp(28px, 4vw, 44px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta-final-info {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1 1 380px;
  min-width: 280px;
}
.cta-final-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cta-final-info h3 {
  color: #fff;
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  text-transform: uppercase;
  line-height: 1.25;
}
.cta-final-info p {
  color: var(--text-secondary);
  font-size: 15px;
  margin: 8px 0 0;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  padding: clamp(48px, 7vw, 72px) clamp(20px, 5vw, 56px) 28px;
}
.footer-grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand span {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  color: #fff;
}
.footer-brand span span { color: var(--accent); }
.footer-about { font-size: 14px; line-height: 1.6; margin: 0; max-width: 260px; }
.footer-heading {
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer-links a:hover { color: var(--accent); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; font-size: 14px; }
.footer-contact a, .footer-contact span { display: flex; align-items: center; gap: 8px; }
.footer-contact a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--container);
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .main-nav, .header-actions { display: none; }
  .nav-toggle { display: block; }
}