/* ═══════════════════════════════════════════════════════════
   Shared storefront header — index + product (and inner pages)
   Load after storefront.css
   ═══════════════════════════════════════════════════════════ */

body.storefront-v2.storefront-unified {
    --sf-header-h: 52px;
    --sf-gap: 12px;
    --sf-max: 1200px;
    --sf-pill: 999px;
    --sf-acrylic: rgba(255, 255, 255, 0.65);
    --sf-blur: saturate(190%) blur(22px);
    --sf-specular: inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --sf-shadow: 0 10px 40px rgba(0, 0, 0, 0.07);
    --sf-subnav-h: 38px;
}

/* ─── Floating capsule header ─── */
body.storefront-v2.storefront-unified .glass-header {
    top: var(--sf-gap);
    left: max(var(--sf-gap), env(safe-area-inset-left));
    right: max(var(--sf-gap), env(safe-area-inset-right));
    height: var(--sf-header-h);
    border-radius: var(--sf-pill);
    background: var(--sf-acrylic);
    backdrop-filter: var(--sf-blur);
    -webkit-backdrop-filter: var(--sf-blur);
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: var(--sf-shadow), var(--sf-specular);
    border-bottom: none;
    transition: background 0.35s ease, backdrop-filter 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

body.storefront-v2.storefront-unified .glass-header.scrolled {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: saturate(210%) blur(28px);
    -webkit-backdrop-filter: saturate(210%) blur(28px);
    border-color: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 44px rgba(0, 0, 0, 0.1), var(--sf-specular);
}

body.storefront-v2.storefront-unified .glass-header-inner {
    max-width: var(--sf-max);
    margin: 0 auto;
    padding: 0 0.75rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    height: 100%;
}

body.storefront-v2.storefront-unified .glass-header-left {
    justify-self: start;
}

body.storefront-v2.storefront-unified .glass-header-center {
    justify-self: center;
}

body.storefront-v2.storefront-unified .glass-header-right {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

body.storefront-v2.storefront-unified .glass-wordmark {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    font-weight: 700;
    color: var(--primary-black);
    text-decoration: none;
    white-space: nowrap;
}

body.storefront-v2.storefront-unified .profile-avatar-btn {
    width: 34px;
    height: 34px;
    min-width: 34px;
    min-height: 34px;
    border: 1.5px solid rgba(255, 255, 255, 0.85);
    background: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
}

body.storefront-v2.storefront-unified .header-actions-capsule {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 3px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--sf-pill);
    box-shadow: var(--sf-specular);
}

body.storefront-v2.storefront-unified .header-actions-capsule .glass-icon-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--sf-pill);
}

body.storefront-v2.storefront-unified .header-actions-capsule .glass-icon-btn:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: none;
}

body.storefront-v2.storefront-unified .header-cart-btn {
    width: 38px;
    height: 38px;
    min-width: 38px;
    min-height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: var(--sf-specular);
}

body.storefront-v2.storefront-unified .header-cart-btn:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: none;
}

/* ─── Subnav: back capsule below header (product / inner pages) ─── */
body.storefront-v2.storefront-unified .storefront-subnav {
    position: sticky;
    top: calc(var(--sf-gap) + var(--sf-header-h));
    z-index: 950;
    max-width: var(--sf-max);
    margin: 0 auto;
    padding: 0.15rem max(var(--sf-gap), env(safe-area-inset-left)) 0.5rem;
    margin-top: -0.15rem;
    display: flex;
    justify-content: center;
}

body.storefront-v2.storefront-unified .btn-back-home {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.95rem;
    border-radius: var(--sf-pill);
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary-black);
    text-decoration: none;
    background: var(--sf-acrylic);
    backdrop-filter: var(--sf-blur);
    -webkit-backdrop-filter: var(--sf-blur);
    border: 1px solid rgba(255, 255, 255, 0.65);
    box-shadow: var(--sf-shadow), var(--sf-specular);
    transition: background 0.2s;
}

body.storefront-v2.storefront-unified .btn-back-home:hover {
    background: rgba(255, 255, 255, 0.85);
}

body.storefront-v2.storefront-unified .btn-back-home svg {
    width: 14px;
    height: 14px;
}

/* Main offset with subnav */
body.storefront-v2.storefront-unified.has-subnav .product-page,
body.storefront-v2.storefront-unified.has-subnav .index-main {
    padding-top: 0;
}

body.storefront-v2.storefront-unified .product-page {
    padding-top: 0;
}

@media (max-width: 768px) {
    body.storefront-v2.storefront-unified {
        --sf-header-h: 50px;
        --sf-gap: 10px;
    }

    body.storefront-v2.storefront-unified .glass-header {
        left: max(10px, env(safe-area-inset-left));
        right: max(10px, env(safe-area-inset-right));
    }

    body.storefront-v2.storefront-unified .glass-header-inner {
        padding: 0 0.5rem;
        gap: 0.25rem;
    }

    body.storefront-v2.storefront-unified .glass-wordmark {
        font-size: 0.68rem;
        letter-spacing: 0.16em;
    }

    body.storefront-v2.storefront-unified .profile-avatar-btn {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
    }

    body.storefront-v2.storefront-unified .header-actions-capsule .glass-icon-btn {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
    }

    body.storefront-v2.storefront-unified .header-cart-btn {
        width: 42px;
        height: 42px;
        min-width: 42px;
        min-height: 42px;
    }

    body.storefront-v2.storefront-unified .glass-header-right {
        gap: 0.3rem;
    }
}