/* ============================================================
   Header — barra em pílula, transparente no topo e de vidro ao rolar.
   Some ao rolar pra baixo e volta ao subir (components/header.js).

   O vidro mora num ::before, não na barra: backdrop-filter num ancestral
   vira o "chão" de qualquer position: fixed dentro dele, e o menu do
   celular (fixed, tela inteira) ficaria preso dentro da pílula.
   ============================================================ */

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: var(--z-sticky);
    padding: 8px clamp(8px, 2vw, 16px) 0;
    transition: transform var(--dur-slow) var(--ease-cinema);
}

.site-header.is-hidden { transform: translateY(-130%); }

.site-header__bar {
    position: relative;
    isolation: isolate;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-4);
    max-width: calc(var(--container-max) + 3rem);
    height: 56px;
    margin-inline: auto;
    padding: 0 6px 0 clamp(14px, 2.5vw, 22px);
    border-radius: var(--radius-pill);
}

.site-header__bar::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: inherit;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.95), var(--shadow-soft);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    opacity: 0;
    transition: opacity var(--dur-base) var(--ease-apple);
}

.site-header.is-scrolled .site-header__bar::before { opacity: 1; }

/* Sobre a foto do hero o header nasce branco, como o logo dos posts. Ao
   rolar entra o vidro claro e tudo volta pra tinta; com o menu do celular
   aberto o fundo é o papel, então também volta. */
body:has(.hero--photo):not(.is-nav-open) .site-header:not(.is-scrolled) {
    --logo-word:         #FFFFFF;
    --logo-mark:         #FFFFFF;
    --logo-dot:          #FFFFFF;
    --header-link:       rgba(255, 255, 255, 0.88);
    --header-link-hover: #FFFFFF;
    --header-link-bg:    rgba(255, 255, 255, 0.14);
}

.site-header__brand {
    position: relative;
    z-index: 2;
    display: inline-flex;
    justify-self: start;
    padding-block: 8px;
}
.site-header__brand .logo { width: clamp(104px, 9vw, 124px); height: auto; }

.site-header__actions {
    position: relative;
    z-index: 2;
    /* Coluna fixa: no celular o <nav> é fixed e sai do fluxo do grid, e sem
       isso as ações cairiam na coluna do meio. */
    grid-column: 3;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-2);
}

/* No celular o CTA da barra sai: o menu e o botão flutuante já levam ao
   WhatsApp, e três elementos não cabem numa barra de 56px. */
.site-header__cta { display: none; }

/* ── Botão do menu ───────────────────────────────────────── */
/* É a bolinha do camaleão dos posts (canto superior direito), com as
   duas linhas do menu no lugar do símbolo. */

.site-nav__toggle {
    display: grid;
    place-content: center;
    gap: 6px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--cam-bubble);
    box-shadow: var(--shadow-brand);
    transition: transform var(--dur-base) var(--ease-apple);
}
.site-nav__toggle:active { transform: scale(0.96); }

.site-nav__toggle span {
    display: block;
    width: 16px;
    height: 1.5px;
    border-radius: 2px;
    background: #FFFFFF;
    transition: transform var(--dur-base) var(--ease-apple);
}

.site-nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
.site-nav__toggle[aria-expanded="true"] span:last-child  { transform: translateY(-3.75px) rotate(-45deg); }

/* ── Navegação: celular (padrão) ─────────────────────────── */

.site-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--space-10);
    height: 100dvh;
    padding: calc(56px + 8px + var(--space-10)) var(--gutter) calc(var(--space-6) + env(safe-area-inset-bottom));
    overflow-y: auto;
    background: var(--paper);
    visibility: hidden;
    opacity: 0;
    transition:
        opacity    var(--dur-base) var(--ease-apple),
        visibility 0s linear var(--dur-base);
}

.site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transition: opacity var(--dur-base) var(--ease-apple), visibility 0s;
}

.site-nav__list { display: grid; }

.site-nav__link {
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--line);
    font-family: var(--font-title);
    font-size: clamp(2.75rem, 13vw, 4.25rem);
    font-weight: 900;
    line-height: 1;
    text-transform: uppercase;
    color: var(--ink);
    opacity: 0;
    transform: translateY(18px);
    transition:
        opacity   var(--dur-slow) var(--ease-out-expo),
        transform var(--dur-slow) var(--ease-out-expo),
        color     var(--dur-fast) var(--ease-apple);
}

.site-nav.is-open .site-nav__link { opacity: 1; transform: none; }
.site-nav.is-open li:nth-child(2) .site-nav__link { transition-delay: 50ms; }
.site-nav.is-open li:nth-child(3) .site-nav__link { transition-delay: 100ms; }
.site-nav.is-open li:nth-child(4) .site-nav__link { transition-delay: 150ms; }
.site-nav.is-open li:nth-child(5) .site-nav__link { transition-delay: 200ms; }

.site-nav__link.is-active { color: var(--brand); }

.site-nav__num {
    font-family: var(--font-support);
    font-size: var(--fs-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--ink-muted);
}

.site-nav__contact { display: grid; gap: var(--space-4); }

.site-nav__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--fs-sm);
    color: var(--ink-muted);
}
.site-nav__meta a { padding-block: var(--space-2); }

/* ── Navegação: desktop ──────────────────────────────────── */

@media (min-width: 600px) {
    .site-header__cta { display: inline-flex; }
}

@media (min-width: 960px) {
    .site-header { padding-top: 12px; }
    .site-header__bar { height: 60px; }

    .site-nav__toggle,
    .site-nav__contact,
    .site-nav__num { display: none; }

    .site-nav {
        position: static;
        display: block;
        height: auto;
        padding: 0;
        overflow: visible;
        background: none;
        visibility: visible;
        opacity: 1;
        transition: none;
    }

    .site-nav__list {
        display: flex;
        gap: var(--space-1);
    }

    .site-nav__link {
        padding: 10px 16px;
        border: 0;
        border-radius: var(--radius-pill);
        font-family: var(--font-support);
        font-size: var(--fs-sm);
        font-weight: 500;
        line-height: 1.2;
        text-transform: none;
        color: var(--header-link, var(--ink-soft));
        opacity: 1;
        transform: none;
        transition: background-color var(--dur-fast) var(--ease-apple), color var(--dur-fast) var(--ease-apple);
    }

    .site-nav__link:hover,
    .site-nav__link.is-active {
        color: var(--header-link-hover, var(--ink));
        background: var(--header-link-bg, rgba(17, 17, 20, 0.06));
    }
}