/* ============================================================
   BRUTAL TRUCK — Base, layout primitives, components
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Barlow+Condensed:ital,wght@0,600;0,700;0,800;1,800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--bt-font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--bt-cinza-claro);
  background: var(--bt-bg-grad);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--bt-fast); }
a:hover { color: var(--bt-laranja); }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* Grain background overlay industrial */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.02) 1px, transparent 0);
  background-size: 3px 3px;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
}

/* === Container === */
.bt-container {
  width: 100%;
  max-width: var(--bt-container);
  margin-inline: auto;
  padding-inline: var(--bt-gutter);
}
.bt-container--narrow { max-width: var(--bt-container-narrow); }

/* === Tipografia utilities === */
.bt-eyebrow {
  font-family: var(--bt-font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--bt-laranja);
  text-transform: uppercase;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.bt-eyebrow::before {
  content: '';
  width: 28px; height: 2px; background: var(--bt-laranja);
}

.bt-title {
  font-family: var(--bt-font-display);
  font-style: italic;
  font-weight: 800;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: -0.01em;
  color: var(--bt-branco);
  background: linear-gradient(180deg, #FFFFFF 0%, #E0E0E0 60%, #9E9E9E 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bt-title--xxl { font-size: clamp(48px, 8vw, 96px); }
.bt-title--xl  { font-size: clamp(40px, 6vw, 72px); }
.bt-title--l   { font-size: clamp(32px, 4.5vw, 56px); }
.bt-title--m   { font-size: clamp(24px, 3vw, 36px); }
.bt-title .accent { color: var(--bt-laranja); -webkit-text-fill-color: var(--bt-laranja); }

.bt-subtitle {
  font-family: var(--bt-font-head);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--bt-branco);
  letter-spacing: 0.02em;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.2;
}

.bt-text { font-size: 17px; line-height: 1.65; color: var(--bt-cinza-claro); }
.bt-text--lg { font-size: 19px; }
.bt-text--sm { font-size: 14px; }
.bt-text strong { color: var(--bt-branco); font-weight: 600; }

.bt-mono {
  font-family: var(--bt-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bt-cinza-medio);
}
.bt-mono .k { color: var(--bt-laranja); }
.bt-mono .v { color: var(--bt-prata-1); }

/* === Botões === */
.bt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 28px;
  font-family: var(--bt-font-head);
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--bt-mid);
  position: relative;
  white-space: nowrap;
  line-height: 1;
  text-decoration: none;
}
.bt-btn--primary {
  background: var(--bt-laranja);
  color: var(--bt-preto);
  border-color: var(--bt-laranja);
}
.bt-btn--primary:hover {
  background: var(--bt-laranja-hot);
  border-color: var(--bt-laranja-hot);
  box-shadow: var(--bt-glow-laranja);
  color: var(--bt-preto);
  transform: translateY(-1px);
}
.bt-btn--whatsapp {
  background: var(--bt-verde);
  color: var(--bt-branco);
  border-color: var(--bt-verde);
}
.bt-btn--whatsapp:hover {
  background: var(--bt-verde-dark);
  border-color: var(--bt-verde-dark);
  color: var(--bt-branco);
  transform: translateY(-1px);
}
.bt-btn--ghost {
  background: transparent;
  color: var(--bt-branco);
  border-color: var(--bt-cinza-escuro);
}
.bt-btn--ghost:hover {
  background: var(--bt-preto-2);
  border-color: var(--bt-laranja);
  color: var(--bt-laranja);
}
.bt-btn--lg { padding: 20px 36px; font-size: 17px; }
.bt-btn--sm { padding: 10px 18px; font-size: 13px; }

.bt-btn .ico { width: 18px; height: 18px; }

/* === Chevron stripe === */
.bt-chevron {
  height: 14px;
  background: var(--bt-chevron);
  width: 100%;
}
.bt-chevron--fino { height: 8px; background: var(--bt-chevron-fino); }

/* === Card industrial === */
.bt-card {
  background: linear-gradient(180deg, #1C1C1C 0%, #141414 100%);
  border: 1px solid var(--bt-cinza-escuro);
  padding: 32px;
  position: relative;
  transition: all var(--bt-mid);
}
.bt-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--bt-laranja);
  transition: width var(--bt-mid);
}
.bt-card:hover {
  border-color: var(--bt-cinza-medio);
  transform: translateY(-4px);
  box-shadow: var(--bt-shadow-md);
}
.bt-card:hover::before { width: 6px; }

.bt-card .bt-card__title {
  font-family: var(--bt-font-head);
  font-weight: 700;
  font-size: 22px;
  color: var(--bt-branco);
  text-transform: uppercase;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.bt-card .bt-card__body {
  font-size: 15px;
  color: var(--bt-cinza-claro);
  line-height: 1.6;
}

/* === Chip === */
.bt-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bt-preto-2);
  border: 1px solid var(--bt-cinza-escuro);
  color: var(--bt-cinza-claro);
  font-family: var(--bt-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.bt-chip--on {
  background: var(--bt-laranja);
  color: var(--bt-preto);
  border-color: var(--bt-laranja);
  font-weight: 700;
}
.bt-chip--alert {
  background: var(--bt-vermelho);
  color: var(--bt-branco);
  border-color: var(--bt-vermelho);
  font-weight: 700;
}
.bt-chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bt-laranja);
  display: inline-block;
}
.bt-chip--alert .dot { background: var(--bt-branco); animation: bt-pulse 1.4s ease-in-out infinite; }

@keyframes bt-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}

/* === Header / Top bar === */
.bt-topbar {
  background: var(--bt-preto-2);
  border-bottom: 1px solid var(--bt-cinza-escuro);
  font-family: var(--bt-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bt-cinza-medio);
  padding: 8px 0;
  position: relative;
  z-index: var(--bt-z-header);
}
.bt-topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.bt-topbar__urgencia {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--bt-amarelo);
  font-weight: 700;
}
.bt-topbar__urgencia::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bt-amarelo);
  animation: bt-pulse 1.4s ease-in-out infinite;
}
.bt-topbar__contato { display: inline-flex; gap: 24px; flex-wrap: wrap; }
.bt-topbar__contato a { color: var(--bt-cinza-claro); }
.bt-topbar__contato a:hover { color: var(--bt-laranja); }

.bt-header {
  background: var(--bt-preto);
  border-bottom: 1px solid var(--bt-cinza-escuro);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: var(--bt-z-header);
  backdrop-filter: blur(8px);
  background: rgba(10,10,10,0.94);
}
.bt-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.bt-header__logo { display: inline-flex; align-items: center; }
.bt-header__logo picture,
.bt-header__logo img { display: block; height: 56px; width: auto; }
.bt-header__logo picture img { height: 56px; }
.bt-nav { display: flex; align-items: center; gap: 28px; }
.bt-nav > a,
.bt-nav__dropdown > .bt-nav__trigger {
  font-family: var(--bt-font-head);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bt-cinza-claro);
  position: relative;
  padding: 8px 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.bt-nav > a:hover, .bt-nav > a.is-active,
.bt-nav__dropdown > .bt-nav__trigger:hover,
.bt-nav__dropdown.is-active > .bt-nav__trigger { color: var(--bt-branco); }
.bt-nav > a::after,
.bt-nav__dropdown > .bt-nav__trigger::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--bt-laranja);
  transition: width var(--bt-fast);
}
.bt-nav > a:hover::after, .bt-nav > a.is-active::after,
.bt-nav__dropdown:hover > .bt-nav__trigger::after,
.bt-nav__dropdown.is-active > .bt-nav__trigger::after { width: 100%; }

/* Dropdown */
.bt-nav__dropdown { position: relative; }
.bt-nav__caret {
  display: inline-block;
  width: 8px; height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--bt-fast);
  margin-left: 4px;
}
.bt-nav__dropdown:hover .bt-nav__caret,
.bt-nav__dropdown.is-open .bt-nav__caret { transform: rotate(-135deg) translateY(-2px); }
.bt-nav__menu {
  position: absolute;
  top: 100%; left: -16px;
  min-width: 260px;
  background: var(--bt-preto);
  border: 1px solid var(--bt-cinza-escuro);
  border-top: 2px solid var(--bt-laranja);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--bt-fast), transform var(--bt-fast), visibility var(--bt-fast);
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  z-index: 10;
}
.bt-nav__dropdown:hover .bt-nav__menu,
.bt-nav__dropdown:focus-within .bt-nav__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.bt-nav__menu a {
  display: block;
  padding: 12px 20px;
  font-family: var(--bt-font-head);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--bt-cinza-claro);
  border-left: 3px solid transparent;
  transition: all var(--bt-fast);
  white-space: nowrap;
}
.bt-nav__menu a:hover {
  background: var(--bt-preto-2);
  color: var(--bt-laranja);
  border-left-color: var(--bt-laranja);
}

.bt-header__cta { display: flex; align-items: center; gap: 12px; }

.bt-burger {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--bt-cinza-escuro);
  background: var(--bt-preto-2);
  position: relative;
}
.bt-burger span {
  position: absolute;
  left: 8px; right: 8px;
  height: 2px;
  background: var(--bt-branco);
  transition: all var(--bt-fast);
}
.bt-burger span:nth-child(1) { top: 12px; }
.bt-burger span:nth-child(2) { top: 19px; }
.bt-burger span:nth-child(3) { top: 26px; }

@media (max-width: 960px) {
  .bt-nav, .bt-header__cta .bt-btn { display: none; }
  .bt-burger { display: block; }
  .bt-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bt-preto);
    border-top: 1px solid var(--bt-cinza-escuro);
    padding: 16px 0;
  }
  .bt-nav.is-open > a,
  .bt-nav.is-open .bt-nav__trigger {
    padding: 14px 24px;
    border-bottom: 1px solid var(--bt-cinza-escuro);
    width: 100%;
    justify-content: space-between;
  }
  .bt-nav.is-open > a::after,
  .bt-nav.is-open .bt-nav__trigger::after { display: none; }
  /* Dropdown mobile — accordion inline */
  .bt-nav.is-open .bt-nav__dropdown { position: static; }
  .bt-nav.is-open .bt-nav__menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: none;
    border-bottom: 1px solid var(--bt-cinza-escuro);
    background: var(--bt-preto-2);
    padding: 0;
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--bt-mid);
  }
  .bt-nav.is-open .bt-nav__dropdown.is-open .bt-nav__menu { max-height: 400px; }
  .bt-nav.is-open .bt-nav__menu a {
    padding: 14px 40px;
    font-size: 12px;
    border-left: none;
  }
}

/* Topbar escondido no mobile */
@media (max-width: 768px) {
  .bt-topbar { display: none; }
}

/* === Sections === */
.bt-section { padding: clamp(64px, 9vw, 128px) 0; position: relative; z-index: var(--bt-z-content); }
.bt-section--tight { padding: clamp(48px, 6vw, 80px) 0; }
.bt-section__head { margin-bottom: clamp(40px, 5vw, 64px); }
.bt-section__head .bt-eyebrow { margin-bottom: 16px; }

/* === Footer === */
.bt-footer {
  background: var(--bt-preto-2);
  border-top: 1px solid var(--bt-cinza-escuro);
  padding: 64px 0 0;
  margin-top: 64px;
}
.bt-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.bt-footer__col h4 {
  font-family: var(--bt-font-head);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bt-laranja);
  margin-bottom: 20px;
}
.bt-footer__col ul li { margin-bottom: 10px; font-size: 14px; }
.bt-footer__col ul li a { color: var(--bt-cinza-claro); }
.bt-footer__col ul li a:hover { color: var(--bt-laranja); }
.bt-footer__brand picture,
.bt-footer__brand img { height: 72px; width: auto; display: block; margin-bottom: 16px; }
.bt-footer__brand picture img { height: 72px; margin-bottom: 0; }
.bt-footer__brand p { font-size: 14px; color: var(--bt-cinza-medio); max-width: 320px; }
.bt-footer__bottom {
  border-top: 1px solid var(--bt-cinza-escuro);
  padding: 24px 0;
  font-family: var(--bt-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bt-cinza-medio);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 768px) {
  .bt-footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .bt-footer__brand { grid-column: 1 / -1; }
}

/* === Floating WhatsApp button === */
.bt-fab {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: var(--bt-z-fab);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px 14px 18px;
  background: var(--bt-verde);
  color: var(--bt-branco);
  font-family: var(--bt-font-head);
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(31,170,89,0.4), 0 0 0 4px rgba(31,170,89,0.15);
  transition: all var(--bt-mid);
  text-decoration: none;
}
.bt-fab:hover {
  background: var(--bt-verde-dark);
  color: var(--bt-branco);
  transform: scale(1.04);
  box-shadow: 0 12px 32px rgba(31,170,89,0.5), 0 0 0 6px rgba(31,170,89,0.2);
}
.bt-fab svg { width: 22px; height: 22px; }
@media (max-width: 480px) {
  .bt-fab { padding: 12px; }
  .bt-fab__label { display: none; }
}

/* === A11y === */
.bt-sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible {
  outline: 2px solid var(--bt-laranja);
  outline-offset: 2px;
}