/* ==========================================================================
   SUNLINK - Header (Barra Superior de Navegação)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Design Tokens & Variáveis
   -------------------------------------------------------------------------- */
:root {
  /* Paleta de Cores */
  --sunlink-blue: #102D50;
  --sunlink-blue-hover: #173f6f;
  --sunlink-yellow: #F8C544;
  --sunlink-yellow-hover: #eab733;
  --sunlink-yellow-active: #d9a524;
  --sunlink-bg: #FFFFFF;
  --sunlink-border: #E5E7EB;
  --sunlink-border-light: #F3F4F6;
  --sunlink-focus-ring: #102D50;

  /* Dimensões */
  --header-height: 80px;
  --header-max-width: 1200px;
  --header-padding-x: 24px;

  /* Tipografia */
  --sunlink-font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Transições */
  --sunlink-transition-fast: 0.2s ease;
  --sunlink-transition-normal: 0.25s ease;
}

/* --------------------------------------------------------------------------
   Reset Essencial do Header
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--sunlink-font-sans);
  color: var(--sunlink-blue);
  background-color: var(--sunlink-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Estrutura do Header
   -------------------------------------------------------------------------- */
.sunlink-header {
  position: relative; /* Acompanha o fluxo normal da página (não fixo) */
  width: 100%;
  background-color: var(--sunlink-bg);
  border-bottom: 1px solid var(--sunlink-border);
  z-index: 100;
}

.sunlink-header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--header-max-width);
  height: var(--header-height);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--header-padding-x);
  padding-right: var(--header-padding-x);
}

/* --------------------------------------------------------------------------
   Logo Sunlink
   -------------------------------------------------------------------------- */
.sunlink-logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  border-radius: 4px;
}

.sunlink-logo-link:focus-visible {
  outline: 2px solid var(--sunlink-focus-ring);
  outline-offset: 4px;
}

.sunlink-logo-img {
  display: block;
  height: 40px;
  width: auto;
  max-height: 44px;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   Navegação Desktop
   -------------------------------------------------------------------------- */
.sunlink-nav {
  display: flex;
  align-items: center;
}

.sunlink-nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sunlink-nav-item {
  display: inline-flex;
  align-items: center;
}

.sunlink-nav-link {
  display: inline-flex;
  align-items: center;
  color: var(--sunlink-blue);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 4px;
  border-radius: 4px;
  transition: color var(--sunlink-transition-fast), opacity var(--sunlink-transition-fast);
}

.sunlink-nav-link:hover {
  color: var(--sunlink-blue-hover);
  opacity: 0.85;
}

.sunlink-nav-link:focus-visible {
  outline: 2px solid var(--sunlink-focus-ring);
  outline-offset: 4px;
}

/* --------------------------------------------------------------------------
   Botão CTA: "Quero um orçamento"
   -------------------------------------------------------------------------- */
.sunlink-btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--sunlink-yellow);
  color: var(--sunlink-blue);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 8px; /* Cantos levemente arredondados */
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.2;
  transition: background-color var(--sunlink-transition-fast),
              transform 0.1s ease,
              box-shadow var(--sunlink-transition-fast);
  white-space: nowrap;
}

.sunlink-btn-cta:hover {
  background-color: var(--sunlink-yellow-hover);
}

.sunlink-btn-cta:active {
  background-color: var(--sunlink-yellow-active);
  transform: scale(0.98);
}

.sunlink-btn-cta:focus-visible {
  outline: 2px solid var(--sunlink-focus-ring);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Botão Hambúrguer (Mobile)
   -------------------------------------------------------------------------- */
.sunlink-menu-toggle {
  display: none; /* Oculto no desktop */
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  color: var(--sunlink-blue);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.sunlink-menu-toggle:focus-visible {
  outline: 2px solid var(--sunlink-focus-ring);
  outline-offset: 2px;
}

.sunlink-menu-icon {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 16px;
}

.sunlink-menu-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--sunlink-blue);
  border-radius: 2px;
  transition: transform var(--sunlink-transition-normal),
              opacity var(--sunlink-transition-fast);
  transform-origin: center;
}

/* Animação do ícone para "X" quando aberto */
.sunlink-menu-toggle[aria-expanded="true"] .sunlink-menu-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sunlink-menu-toggle[aria-expanded="true"] .sunlink-menu-bar:nth-child(2) {
  opacity: 0;
}

.sunlink-menu-toggle[aria-expanded="true"] .sunlink-menu-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Responsividade: Mobile & Tablet (< 768px)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .sunlink-header-container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .sunlink-logo-img {
    height: 36px;
  }

  /* Exibe o botão de alternância do menu */
  .sunlink-menu-toggle {
    display: inline-flex;
  }

  /* Menu retrátil mobile */
  .sunlink-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--sunlink-bg);
    border-bottom: 1px solid var(--sunlink-border);
    box-shadow: 0 12px 24px -6px rgba(16, 45, 80, 0.08);
    display: none; /* Controlado via JS e classe .is-open */
    padding: 16px 20px 24px;
    z-index: 99;
  }

  .sunlink-nav.is-open {
    display: block;
    animation: sunlinkNavSlideDown 0.25s ease-out forwards;
  }

  .sunlink-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .sunlink-nav-item {
    width: 100%;
  }

  .sunlink-nav-link {
    width: 100%;
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: 1px solid var(--sunlink-border-light);
  }

  .sunlink-nav-item-cta {
    margin-top: 16px;
  }

  .sunlink-btn-cta {
    width: 100%;
    padding: 14px 20px;
    font-size: 16px;
  }
}

/* Animação suave para abertura mobile */
@keyframes sunlinkNavSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}