/* =========================================================================
   FKweb Social — Camada 5: Layout
   Regiões da página: barra superior, colunas de conteúdo, painel lateral,
   rodapé. Nada aqui conhece um post ou um perfil — só o esqueleto.
   ========================================================================= */

/* =========================================================================
   1. BARRA SUPERIOR
   Superfície translúcida com desfoque, hairline embaixo e a marca à
   esquerda. O fundo sólido é o caminho de fallback para navegadores sem
   backdrop-filter.
   ========================================================================= */
.fk-appbar,
.fkode-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: var(--fk-appbar-solid);
  border-bottom: 1px solid var(--fk-border);
}
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .fk-appbar, .fkode-header {
    background: var(--fk-appbar-bg);
    -webkit-backdrop-filter: saturate(175%) blur(16px);
    backdrop-filter: saturate(175%) blur(16px);
  }
}

.fk-appbar__inner {
  width: 100%;
  max-width: var(--fk-app-width);
  height: var(--fk-appbar-h);
  margin: 0 auto;
  padding: 0 var(--fk-gutter);
  display: flex;
  align-items: center;
  gap: var(--fk-space-2);
}

.fk-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--fk-space-3);
  margin-right: auto;
  padding: var(--fk-space-2) var(--fk-space-2) var(--fk-space-2) 0;
  border-radius: var(--fk-radius-md);
  color: var(--fk-text) !important;
  text-decoration: none !important;
}
.fk-brand__mark {
  height: 26px;
  width: auto;
  flex-shrink: 0;
  transition: transform var(--fk-duration-normal) var(--fk-ease-spring);
}
.fk-brand:hover .fk-brand__mark { transform: translateY(-1px) rotate(-3deg); }
.fk-brand__name {
  font-family: var(--fk-font-brand);
  font-size: var(--fk-ui-xl);
  font-weight: var(--fk-weight-regular);
  letter-spacing: var(--fk-tracking-title);
  line-height: 1;
}

.fk-nav-right {
  display: flex;
  align-items: center;
  gap: var(--fk-space-1);
  margin-left: auto;
}

/* Botão de ícone da barra (tema) — irmão de .fkweb-notif__bell e .fk-menu__btn */
.fkweb-theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--fk-radius-field);
  font-size: var(--fk-ui-md);
  line-height: 1;
  color: var(--fk-text-muted);
  transition: background-color var(--fk-duration-fast) var(--fk-ease);
}
.fkweb-theme-btn:hover { background: var(--fk-surface-inset); }

/* =========================================================================
   2. COLUNAS DE CONTEÚDO
   ========================================================================= */

/* Coluna única de leitura — perfil, busca, álbum, post, configurações */
.fkode {
  width: 100%;
  max-width: calc(var(--fk-feed-width) + var(--fk-gutter) * 2);
  margin: 0 auto;
  padding: var(--fk-space-8) var(--fk-gutter) var(--fk-space-14);
  display: flex;
  flex-direction: column;
}
.fkode--estreito { max-width: calc(560px + var(--fk-gutter) * 2); }

/* Home: feed + painel "em alta" */
.home-layout {
  width: 100%;
  max-width: var(--fk-app-width);
  margin: 0 auto;
  padding: var(--fk-space-8) var(--fk-gutter) var(--fk-space-14);
  display: flex;
  align-items: flex-start;
  gap: var(--fk-space-7);
}
.home-feed {
  flex: 1;
  min-width: 0;
  max-width: var(--fk-feed-width);
  padding: 0;
}

/* Páginas de autenticação — cartão centralizado */
.auth-wrap {
  width: 100%;
  min-height: calc(100vh - var(--fk-appbar-h) - var(--fk-footer-h));
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--fk-space-12) var(--fk-gutter) var(--fk-space-14);
}

/* Documento longo — política de privacidade */
.privacy-wrap {
  width: 100%;
  max-width: calc(var(--fk-container-narrow) + var(--fk-gutter) * 2);
  margin: 0 auto;
  padding: var(--fk-space-8) var(--fk-gutter) var(--fk-space-14);
}

/* Painel administrativo */
.adm {
  width: 100%;
  max-width: var(--fk-app-width);
  margin: 0 auto;
  padding: var(--fk-space-8) var(--fk-gutter) var(--fk-space-14);
}

/* =========================================================================
   3. PAINEL LATERAL "EM ALTA"
   Coluna fixa no desktop; gaveta deslizante no mobile (JS alterna .open).
   ========================================================================= */
.pop-panel {
  width: var(--fk-aside-width);
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--fk-appbar-h) + var(--fk-space-5));
  max-height: calc(100vh - var(--fk-appbar-h) - var(--fk-footer-h) - var(--fk-space-9));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0;
  margin: 0;
}

.pop-panel__header {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fk-space-3);
  padding: var(--fk-space-5) var(--fk-space-6);
  background: var(--fk-surface);
  border-bottom: 1px solid var(--fk-border);
  font-family: var(--fk-font-brand);
  font-size: var(--fk-ui-lg);
  letter-spacing: var(--fk-tracking-title);
  color: var(--fk-text);
}
.pop-panel__close {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--fk-radius-full);
  font-size: 22px;
  line-height: 1;
  color: var(--fk-text-muted);
}
.pop-panel__close:hover { background: var(--fk-surface-inset); color: var(--fk-text); }

.pop-panel__body { padding: var(--fk-space-2) 0 var(--fk-space-4); }

/* Botão flutuante + véu (mobile) */
.pop-fab {
  display: none;
  position: fixed;
  right: var(--fk-space-6);
  bottom: calc(var(--fk-footer-h) + var(--fk-space-5) + env(safe-area-inset-bottom, 0px)); /* acima do rodapé fixo */
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border-radius: var(--fk-radius-full);
  background: var(--fk-accent-strong);
  color: var(--fk-accent-contrast);
  font-size: 22px;
  box-shadow: var(--fk-shadow-lg);
  z-index: 1100;
  transition: background-color var(--fk-duration-fast) var(--fk-ease), transform var(--fk-duration-fast) var(--fk-ease);
}
.pop-fab:hover  { background: var(--fk-accent-strong-hover); }
.pop-fab:active { transform: scale(.94); }

.pop-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1199;
  background: var(--fk-overlay);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}

/* =========================================================================
   4. RODAPÉ
   Fixo na base da tela — é a vitrine da FKweb e precisa estar sempre
   visível. Fica compacto e translúcido (mesma receita da barra superior)
   e o body reserva a altura dele para não cobrir o fim do conteúdo.
   ========================================================================= */
body { padding-bottom: calc(var(--fk-footer-h) + env(safe-area-inset-bottom, 0px)); }

.fkweb-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  width: 100%;
  min-height: var(--fk-footer-h);
  padding: var(--fk-space-3) var(--fk-gutter) calc(var(--fk-space-3) + env(safe-area-inset-bottom, 0px));
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--fk-space-3);
  border-top: 1px solid var(--fk-border);
  background: var(--fk-appbar-solid);
  font-size: var(--fk-ui-xs);
  color: var(--fk-text-subtle);
  text-align: center;
}
.fkweb-footer p { margin: 0; }
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .fkweb-footer {
    background: var(--fk-appbar-bg);
    -webkit-backdrop-filter: saturate(175%) blur(16px);
    backdrop-filter: saturate(175%) blur(16px);
  }
}
.fkweb-footer a { color: var(--fk-text-muted); }
.fkweb-footer a:hover { color: var(--fk-text-brand); }
.fkweb-footer__mark { height: 14px; width: auto; opacity: .55; }

/* =========================================================================
   5. RESPONSIVO
   ========================================================================= */
@media (max-width: 900px) {
  :root { --fk-aside-width: 264px; }
}

@media (max-width: 860px) {
  .home-layout { flex-direction: column; gap: 0; }
  .home-feed   { max-width: 100%; width: 100%; }

  .pop-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 88vw);
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    border-width: 0 0 0 1px;
    box-shadow: var(--fk-shadow-xl);
    z-index: 1200;
    transform: translateX(105%);
    transition: transform var(--fk-duration-normal) var(--fk-ease);
  }
  .pop-panel.open { transform: none; }
  .pop-panel__close { display: flex; }
  .pop-fab { display: flex; }
}

@media (max-width: 560px) {
  :root { --fk-gutter: 12px; --fk-appbar-h: 56px; }

  .fkode, .home-layout, .adm, .privacy-wrap { padding-top: var(--fk-space-6); }
  .auth-wrap { padding-top: var(--fk-space-8); }
  .fk-brand__name { font-size: var(--fk-ui-lg); }
  .fk-brand__mark { height: 24px; }
}