/* Paleta corporativa séria e coerente com a logo */
:root {
  --bg: #ffffff;
  --text: #0f172a; /* primário de texto */
  --muted: #6B7280; /* cinza-azulado (secundário) */
  --brand: #1A2C3D; /* azul-petróleo (marca) */
  --brand-weak: #8C9094; /* cinza neutro (apoio) */
  --card: #F5F7FA; /* fundo de cartão/seção */
  --border: #E5E7EB; /* bordas/discretas */
  --focus: #0ea5e9;
  --radius: 14px;

  /* escala tipográfica fluida */
  --step--1: clamp(0.875rem, 0.79rem + 0.3vw, 1rem);
  --step-0: clamp(1rem, 0.9rem + 0.6vw, 1.125rem);
  --step-1: clamp(1.25rem, 1.05rem + 1.2vw, 1.5rem);
  --step-2: clamp(1.5rem, 1.2rem + 2.2vw, 2rem);
  --step-3: clamp(1.75rem, 1.3rem + 3.2vw, 2.5rem);

  /* utilidades de feedback (novas) */
  --success: #0f766e;
  --danger: #b91c1c;
  --hint: #6B7280;
}

* {
  box-sizing: border-box;
}

html:focus-within {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 "Poppins", system-ui, Segoe UI, Arial, sans-serif;
}

/* seleção de texto com cor da marca (novo) */
::selection {
  background: rgba(26, 44, 61, 0.18);
  color: var(--text);
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color .15s ease, opacity .15s ease; /* suaviza hover */
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* reduz movimento se usuário preferir */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* utilidades */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.sr-only {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

/* skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 16px;
  top: 12px;
  width: auto;
  height: auto;
  background: #fff;
  color: #111;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  z-index: 999;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
}

.logo {
  height: 80px;
  width: auto;
}

/* nav responsivo */
.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-links a {
  font-weight: 600;
  font-size: var(--step--1);
  padding: 6px 4px; /* melhora área de clique sem quebrar layout */
  border-radius: 8px;
}

.nav-links a:focus-visible {
  outline-offset: 3px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* i18n */
.lang-switch {
  display: flex;
  gap: 6px;
}

.lang-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease; /* novo */
}

.lang-btn:hover {
  border-color: var(--brand-weak);
}

.lang-btn[aria-pressed="true"] {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(26, 44, 61, 0.12);
}

/* menu hamburger */
.menu-toggle {
  display: none;
  position: relative;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}

.menu-bars::before,
.menu-bars::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 6px 0;
  border-radius: 2px;
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    inset: 56px 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: none;
    flex-direction: column;
    gap: 12px;
    padding: 12px 20px;
  }

  .nav-links.show {
    display: flex;
  }
}

/* botões */
.btn {
  display: inline-block;
  background: var(--brand);
  color: #fff;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--brand);
  font-weight: 700;
  transition: transform .06s ease, opacity .15s ease; /* novo */
}

.btn:hover {
  text-decoration: none;
  opacity: 0.95;
}

.btn:active {
  transform: translateY(1px); /* micro-feedback */
}

.btn:disabled,
.btn[disabled] {
  opacity: .6;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}

.btn-ghost:hover { /* novo */
  background: rgba(26, 44, 61, 0.06);
}

.btn-outline {
  background: transparent;
  color: var(--brand);
  border: 1px solid var(--brand);
}

.btn-outline:hover { /* novo */
  background: rgba(26, 44, 61, 0.06);
}

/* hero */
.hero {
  padding: clamp(48px, 6vw, 80px) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

h1 {
  font-size: var(--step-3);
  line-height: 1.1;
  margin: 0 0 10px;
}

.lead {
  color: var(--muted);
  max-width: 60ch;
  font-size: var(--step-0);
}

.cta {
  margin-top: 20px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-card {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #eaf1f7, #fafcff);
}

.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* sections */
.section {
  padding: clamp(48px, 6vw, 80px) 0;
}

.section.alt {
  background: #FAFBFC;
}

h2 {
  font-size: var(--step-2);
  margin: 0 0 12px;
}

h3 {
  font-size: var(--step-1);
  margin: 0 0 8px;
}

.bullets {
  margin: 10px 0 0 0;
  padding-left: 18px;
}

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: start;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 14px;
}

/* cards */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.card.info {
  background: var(--card);
}

.small {
  font-size: var(--step--1);
  color: var(--muted);
}

/* form */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field input,
.field textarea {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border 0.15s ease, box-shadow 0.15s ease;
  font-size: var(--step-0);
}

.field input::placeholder,
.field textarea::placeholder { /* novo: placeholder mais sutil */
  color: #9AA0A6;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(26, 44, 61, 0.12);
}

/* estados auxiliares de formulário (novos) */
.field input.error,
.field textarea.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.12);
}

.field .hint {
  color: var(--hint);
  font-size: var(--step--1);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 10px;
}

.form-note {
  color: var(--muted);
  margin-top: 6px;
  font-size: var(--step--1);
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 18px 0;
}

.footer-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-flex p {
  margin: 0;
}

.footer-nav a {
  margin-left: 14px;
  color: var(--muted);
}

.footer-nav a:hover {
  color: var(--brand);
}

/* ícones sociais – mais legíveis e com foco/hover elegantes */
.social {
  display: flex;
  align-items: center;
  gap: 14px;
}

.social .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: color .15s ease, transform .06s ease; /* novo */
}

.social .icon:hover {
  color: var(--brand);
  text-decoration: none;
}

.social .icon:active { /* micro-feedback */
  transform: translateY(1px);
}

.social .icon:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 10px;
}

/* responsividade extra */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .cards {
    grid-template-columns: 1fr;
  }

  /* melhora leitura em telas pequenas (novo) */
  .nav-links a {
    padding: 8px 6px;
  }
}