/* ============================================================
   LAYOUT — IAO Instituto Avançado do Ouvido
   Container, Header, Footer, Grid
   ============================================================ */

/* ----------------------------------------------------------
   BASE
   ---------------------------------------------------------- */
body {
  font-family: var(--font-corpo);
  font-size: var(--text-body);
  color: var(--iao-texto);
  background-color: var(--iao-off-white);
  line-height: var(--lh-corpo);
}

/* ----------------------------------------------------------
   CONTAINER
   ---------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ----------------------------------------------------------
   HEADER
   ---------------------------------------------------------- */
.site-header {
  background-color: var(--iao-branco);
  height: 90px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
  border-bottom: none;
}

.site-header .container {
  width: calc(100% - 48px);
  max-width: 1320px;
  min-height: 88px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__logo img {
  max-width: 175px;
  max-height: 60px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 1.7vw, 30px);
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: visible;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0;
  color: var(--iao-azul-escuro);
  text-decoration: none;
  transition: color 180ms ease;
}

.site-header .site-nav__link {
  font-family: "Inter", sans-serif;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.005em;
  white-space: nowrap;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 4px;
  border-radius: 999px;
  background-color: #1E5590;
  opacity: 0;
  transform: translateX(-50%);
  transition:
    width 180ms ease,
    opacity 180ms ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible,
.site-nav__link.is-active,
.site-nav__link[aria-current="page"] {
  color: var(--iao-azul);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link.is-active::after,
.site-nav__link[aria-current="page"]::after {
  width: 64px;
  opacity: 1;
}

.site-nav__link:focus-visible {
  outline: 2px solid rgba(30, 85, 144, 0.38);
  outline-offset: 4px;
  border-radius: 3px;
}

.btn-cta-header {
  flex: 0 0 auto;
  min-height: 48px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  background-color: var(--iao-azul);
  color: var(--iao-branco);
  border-radius: 6px;
  transition: background-color 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-cta-header:hover {
  background-color: var(--iao-azul-escuro);
}

.btn-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 5px;
}

.btn-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--iao-azul-escuro);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.2s ease;
}

.btn-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.btn-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.btn-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Menu mobile overlay */
.site-nav-mobile {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background-color: var(--iao-branco);
  z-index: 99;
  padding: var(--space-lg) var(--container-pad);
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
  border-top: 1px solid rgba(214, 193, 165, 0.4);
}

.site-nav-mobile.open {
  display: flex;
}

.site-nav-mobile__link {
  font-family: var(--font-corpo);
  font-size: var(--text-menu-mobile);
  font-weight: 500;
  color: var(--iao-azul-escuro);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(214, 193, 165, 0.35);
  transition: color var(--transition-fast);
}

.site-nav-mobile__link:hover {
  color: var(--iao-azul);
}

.site-nav-mobile__whatsapp {
  margin-top: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-menu-mobile);
  font-weight: 600;
  color: var(--iao-azul);
}

/* ----------------------------------------------------------
   FOOTER
   ---------------------------------------------------------- */
.site-footer {
  background-color: var(--iao-azul-escuro);
  color: var(--iao-off-white);
  padding-top: var(--space-xl);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}

.site-footer__logo-image {
  width: auto;
  height: auto;
  max-width: 200px;
  object-fit: contain;
  margin-bottom: var(--space-md);
}

.site-footer__desc {
  font-size: var(--text-footer);
  color: var(--iao-off-white);
  line-height: var(--lh-corpo);
  max-width: 280px;
  opacity: 0.9;
}

.site-footer__col-title {
  font-size: clamp(0.875rem, 1.1vw, 1.125rem);
  font-weight: 600;
  color: var(--iao-branco);
  margin-bottom: var(--space-md);
  letter-spacing: 0.02em;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-footer__link {
  font-size: var(--text-footer);
  color: var(--iao-off-white);
  opacity: 0.85;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.site-footer__link:hover {
  opacity: 1;
  color: var(--iao-borda);
}

.site-footer__contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-sm);
}

.site-footer__contact-label {
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--iao-off-white);
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.site-footer__contact-value {
  font-size: var(--text-footer);
  color: var(--iao-off-white);
  opacity: 0.9;
  transition: opacity var(--transition-fast);
}

.site-footer__contact-value:hover {
  opacity: 1;
  color: var(--iao-borda);
}

.site-footer__address {
  font-size: var(--text-footer);
  color: var(--iao-off-white);
  opacity: 0.85;
  line-height: 1.6;
}

/* Faixa inferior */
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: var(--space-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.site-footer__copyright {
  font-size: var(--text-copyright);
  color: var(--iao-borda);
  opacity: 0.8;
}

.site-footer__legal-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.site-footer__legal-link {
  font-size: var(--text-copyright);
  color: var(--iao-borda);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.site-footer__legal-link:hover {
  opacity: 1;
}

/* ----------------------------------------------------------
   SECTIONS — padrão de espaçamento
   ---------------------------------------------------------- */
.section {
  padding-block: var(--space-xl);
}

.section--lg {
  padding-block: var(--space-2xl);
}

.section--sm {
  padding-block: var(--space-lg);
}

.section--dark {
  background-color: var(--iao-azul-escuro);
  color: var(--iao-branco);
}

.section--accent {
  background-color: var(--iao-off-white);
}

.section--white {
  background-color: var(--iao-branco);
}

/* Cabeçalho de seção */
.section-header {
  margin-bottom: var(--space-lg);
}

.section-header--center {
  text-align: center;
}

.section-header__eyebrow {
  font-family: var(--font-corpo);
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--iao-azul);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.section-header__eyebrow--light {
  color: var(--iao-borda);
}

.section-header__title {
  font-family: var(--font-titulo);
  font-weight: 600;
  color: var(--iao-azul-escuro);
  line-height: var(--lh-titulo);
  font-size: var(--h2-desktop);
}

.section--dark .section-header__title,
.section--dark .section-header__title {
  color: var(--iao-branco);
}

.section-header__desc {
  margin-top: var(--space-sm);
  font-size: var(--text-body);
  color: var(--iao-texto);
  max-width: var(--max-leitura);
  line-height: var(--lh-corpo);
}

.section-header--center .section-header__desc {
  margin-inline: auto;
}

.section--dark .section-header__desc {
  color: rgba(250, 247, 242, 0.82);
}

/* ----------------------------------------------------------
   GRIDS GENÉRICOS
   ---------------------------------------------------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

/* ----------------------------------------------------------
   RESPONSIVIDADE — FOOTER E LAYOUT
   ---------------------------------------------------------- */
@media (max-width: 1180px) {
  .site-nav,
  .btn-cta-header {
    display: none;
  }

  .btn-hamburger {
    display: inline-flex;
  }
}

@media (min-width: 1181px) {
  .site-nav {
    display: flex;
  }

  .btn-cta-header {
    display: inline-flex;
  }

  .btn-hamburger {
    display: none;
  }
}

@media (max-width: 1023px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
}





@media (max-width: 767px) {
  :root {
    --header-height: 68px;
    --space-xl: 3rem;
    --space-2xl: 4rem;
  }

  .site-header {
    min-height: 74px;
  }

  .site-header .container {
    min-height: 74px;
  }

  .site-header__logo-image {
    width: auto;
    height: auto;
    max-width: 165px;
    max-height: 54px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .site-footer__desc {
    max-width: 100%;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .grid-3,
  .grid-4,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .section-header__title {
    font-size: var(--h2-mobile);
  }
}