/* =========================================================
   Layout — header, menu mobile e rodapé.
   ========================================================= */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 130;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1380px, calc(100% - 32px));
  margin: 16px auto 0;
  padding: 13px 16px 13px 18px;
  border: 1px solid transparent;
  border-radius: 18px;
  color: var(--cream);
  transition: color .3s ease, background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(251, 248, 243, .86);
  border-color: rgba(36, 24, 33, .08);
  box-shadow: 0 12px 35px rgba(36, 24, 33, .08);
  /* Safari ignora backdrop-filter sem o prefixo: sem isto o header
     em scroll fica com texto escuro sobre conteúdo escuro. */
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 1.35rem;
  object-fit: cover;
  flex-shrink: 0;
}
.site-header .brand-mark {
  background: var(--cream);
  transition: background .3s ease;
}
.site-header.is-scrolled .brand-mark { background: none; }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-size: .9rem; }
.brand-copy small { margin-top: 4px; font-size: .62rem; opacity: .62; }

.desktop-nav { display: flex; align-items: center; gap: 30px; }
.desktop-nav > a { font-size: .78rem; font-weight: 600; }
.desktop-nav > a::after,
.text-link::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s ease;
}
.desktop-nav > a:hover::after,
.text-link:hover::after { transform: scaleX(1); transform-origin: left; }

.menu-button {
  display: none;
  position: relative;
  z-index: 2;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  color: inherit;
  background: transparent;
}
.menu-button span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
  transform-origin: center;
  transition: transform .28s ease, opacity .2s ease;
}
.menu-button[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

.mobile-menu { display: none; }

@media (max-width: 1050px) {
  .desktop-nav { display: none; }
  .menu-button { display: block; }

  /* O menu fica visualmente ligado ao header e não abre debaixo de um
     header translúcido em scroll. */
  .site-header.is-menu-open,
  .site-header.is-menu-open.is-scrolled {
    color: var(--cream);
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: block;
    padding: 104px 24px max(28px, env(safe-area-inset-bottom));
    overflow-y: auto;
    overscroll-behavior: contain;
    color: var(--cream);
    background: var(--ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
  }
  .mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .mobile-menu nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    width: min(100%, 560px);
    min-height: 100%;
    margin-inline: auto;
    gap: clamp(14px, 3vh, 28px);
    text-align: left;
    font-family: var(--serif);
    font-size: clamp(2.25rem, 7vw, 4rem);
    line-height: .95;
  }
  .mobile-menu nav > a {
    padding-block: 8px;
    border-bottom: 1px solid var(--line-dark);
  }
  .mobile-menu .button {
    width: 100%;
    margin-top: 12px;
    font-family: var(--sans);
    font-size: .82rem;
  }
}

@media (max-width: 760px) {
  .site-header { width: calc(100% - 20px); margin-top: 10px; }
  .brand-copy small { display: none; }
  .brand-mark { width: 36px; height: 36px; }
  .mobile-menu { padding-inline: 18px; }
  .mobile-menu nav { font-size: clamp(2.2rem, 12vw, 3.35rem); }
}

@media (max-width: 390px) {
  .mobile-menu nav { font-size: 2.55rem; }
}

.site-footer { padding: 34px 0; color: rgba(244, 239, 231, .75); background: var(--night); }
.footer-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; }
.site-footer p { margin: 0; font-size: .68rem; }
.brand--footer { color: var(--cream); }
.footer-links { display: flex; justify-content: flex-end; gap: 22px; font-size: .68rem; }

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .brand--footer { justify-self: center; }
  .footer-links { justify-content: center; }
}