/* =============================== */
/*  HEADER FLOTANTE (LIQUID GLASS) */
/* =============================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem clamp(1rem, 4vw, 2.5rem) 0;
    transition: padding 0.4s var(--transition-smooth);
}

.site-header__inner {
    width: min(100%, var(--max-width-container));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: clamp(.65rem, 1.4vw, 1.25rem);
    padding: .65rem clamp(.8rem, 1.5vw, 1.25rem);
    border-radius: 22px;

    /* Efecto liquid glass: translucidez + blur + saturación */
    background:
        linear-gradient(rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.72)) padding-box,
        var(--gradient-rainbow) border-box;
    border: 1.5px solid transparent;
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    box-shadow:
        0 8px 32px rgba(30, 33, 48, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
    transition: box-shadow 0.4s var(--transition-smooth), background 0.4s var(--transition-smooth);
}

/* Resplandor sutil del borde degradado al hacer scroll */
.site-header.is-scrolled .site-header__inner {
    box-shadow:
        0 12px 44px rgba(30, 33, 48, 0.14),
        0 0 24px rgba(197, 179, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.site-header__logo {
    display: inline-flex;
    align-items: center;
    flex: none;
}

.site-header__logo-image {
    display: block;
    width: 113px;
    height: 30px;
    object-fit: contain;
}

.site-navigation { min-width: 0; }

.site-navigation__list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: clamp(.6rem, 1.5vw, 1.75rem);
    margin: 0;
    padding: 0;
}

.site-navigation__link {
    font-weight: 500;
    font-size: clamp(.8rem, 1.05vw, .95rem);
    position: relative;
    color: var(--color-ink);
    white-space: nowrap;
}

.site-navigation__item { flex: none; }
.site-navigation__item--cta .btn { white-space: nowrap; }

.site-navigation__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -0.35rem;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient-cta);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--transition-smooth);
}

.site-navigation__link:hover::after,
.site-navigation__link:focus-visible::after {
    transform: scaleX(1);
}

/* Botón hamburguesa (solo visible en móvil) */
.site-header__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 42px;
    height: 42px;
    padding: 0 10px;
    border: none;
    border-radius: 12px;
    background: transparent;
    cursor: pointer;
}

.site-header__toggle span {
    display: block;
    height: 2px;
    border-radius: 2px;
    background: var(--color-ink);
    transition: transform 0.35s var(--transition-smooth), opacity 0.35s;
}

.site-header__toggle[aria-expanded="true"] span:first-child {
    transform: translateY(4px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-4px) rotate(-45deg);
}

/* =============================== */
/*  VERSIÓN MÓVIL                  */
/* =============================== */
@media (max-width: 950px) {
    .site-header__logo-image { width: 95px; height: 26px; }
    .site-navigation__list { gap: .65rem; }
    .site-navigation__link { font-size: .79rem; }
    .site-navigation__item--cta .btn { padding: .52rem .85rem; font-size: .79rem; }
}

@media (max-width: 680px) {
    .site-header__inner {
        flex-wrap: wrap;
    }

    .site-header__toggle {
        display: flex;
        order: 2;
        margin-left: auto;
    }

    .site-navigation {
        order: 3;
        flex-basis: 100%;
        display: none;
    }

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

    .site-navigation__list {
        flex-direction: column;
        align-items: flex-start;
        gap: .85rem;
        padding: .8rem 0 .3rem;
    }

    .site-navigation__link { font-size: .92rem; }
}