/*
 * Header da Altéria
 *
 * Barra sólida sticky que encolhe ao rolar. A altura vive numa
 * custom property, para que um único valor comande a transição de
 * todos os elementos da barra.
 */

.site-header {
    --header-height: 92px;

    position: sticky;
    top: 0;
    z-index: var(--z-header);
    width: 100%;
    background-color: #EAE8E3;
    border-bottom: 1px solid rgba(177, 145, 84, 0.18);
    transition:
        background-color 350ms ease,
        box-shadow 350ms ease,
        border-color 350ms ease;
    animation: header-enter 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.site-header.is-scrolled {
    --header-height: 66px;

    background-color: rgba(234, 232, 227, 0.94);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-color: transparent;
    box-shadow: 0 2px 24px rgba(16, 27, 50, 0.09);
}

@keyframes header-enter {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: min(
        calc(100% - (var(--container-padding) * 2)),
        var(--container-width)
    );
    min-height: var(--header-height);
    margin-inline: auto;
    transition: min-height 350ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------------------------------------------------------------- */
/* Logótipo                                                           */
/* ---------------------------------------------------------------- */

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 14px;
}

.site-logo__image {
    width: 54px;
    height: 54px;
    object-fit: contain;
    transition:
        width 350ms cubic-bezier(0.22, 1, 0.36, 1),
        height 350ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header.is-scrolled .site-logo__image {
    width: 40px;
    height: 40px;
}

.site-logo__content {
    display: flex;
    flex-direction: column;
}

.site-logo__content strong {
    color: var(--color-navy);
    font-family: var(--font-heading);
    font-size: 27px;
    font-weight: 400;
    letter-spacing: 0.08em;
    line-height: 1;
    transition: font-size 350ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header.is-scrolled .site-logo__content strong {
    font-size: 22px;
}

/*
 * O subtítulo recolhe em vez de desaparecer de repente: max-height
 * animado dá a sensação de a barra se compactar, não de o texto
 * sumir.
 */
.site-logo__content small {
    max-height: 20px;
    margin-top: 7px;
    overflow: hidden;
    color: var(--color-gold);
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 400;
    opacity: 1;
    transition:
        max-height 350ms cubic-bezier(0.22, 1, 0.36, 1),
        opacity 250ms ease,
        margin-top 350ms cubic-bezier(0.22, 1, 0.36, 1);
}

.site-header.is-scrolled .site-logo__content small {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
}

/* ---------------------------------------------------------------- */
/* Navegação                                                          */
/* ---------------------------------------------------------------- */

.site-nav {
    margin-left: auto;
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.site-nav__list a {
    position: relative;
    color: var(--color-navy);
    font-family: var(--font-body);
    font-size: var(--font-size-menu);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.site-nav__list a:hover {
    color: var(--color-gold);
}

.site-nav__list a::after {
    position: absolute;
    right: 0;
    bottom: -8px;
    left: 0;
    height: 1px;
    background-color: var(--color-gold);
    content: "";
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-fast);
}

.site-nav__list a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.menu-toggle {
    display: none;
}

/* ---------------------------------------------------------------- */
/* Responsivo                                                         */
/* ---------------------------------------------------------------- */

@media (max-width: 1100px) {
    .site-header {
        --header-height: 84px;
    }

    .site-header.is-scrolled {
        --header-height: 62px;
    }

    .site-nav__list {
        gap: 24px;
    }
}

@media (max-width: 900px) {
    .site-nav__list {
        gap: 18px;
    }
}

@media (max-width: 768px) {

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

    .site-header.is-scrolled {
        --header-height: 62px;
    }

    .site-logo__image {
        width: 44px;
        height: 44px;
    }

    .site-header.is-scrolled .site-logo__image {
        width: 38px;
        height: 38px;
    }

    .site-logo__content strong {
        font-size: 22px;
    }

    .site-header.is-scrolled .site-logo__content strong {
        font-size: 20px;
    }

    .site-logo__content small {
        font-size: 9px;
    }

    .menu-toggle {
        display: block;
        width: 42px;
        height: 42px;
        padding: 8px;
        background-color: transparent;
    }

    .menu-toggle span {
        display: block;
        width: 100%;
        height: 1px;
        margin-block: 5px;
        background-color: var(--color-navy);
        transition: transform 300ms ease, opacity 300ms ease;
    }

    /* Hambúrguer vira X quando o menu está aberto */
    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

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

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    .site-nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        display: none;
        padding: 24px;
        background-color: var(--color-light-gray);
        border-bottom: 1px solid rgba(177, 145, 84, 0.18);
        box-shadow: 0 12px 24px rgba(16, 27, 50, 0.08);
    }

    .site-nav.is-open {
        display: block;
    }

    .site-nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
}

/* ---------------------------------------------------------------- */
/* Movimento reduzido                                                 */
/* ---------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {

    .site-header,
    .site-header__inner,
    .site-logo__image,
    .site-logo__content strong,
    .site-logo__content small,
    .menu-toggle span {
        animation: none;
        transition: none;
    }
}