/* ==========================================================================
   Header (Navigation Bar)
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 2px 8px rgba(28, 28, 28, 0.06);
}

.site-header__inner {
    display: grid;
    grid-template-columns: 44px 1fr 44px;
    align-items: center;
    gap: 0.75rem;
    min-height: 72px;
    padding-block: 0.5rem;
}
.site-header__logo {
    grid-column: 2;
    justify-self: center;
    display: inline-flex;
    align-items: center;
    line-height: 0;
    text-decoration: none;
}

.site-header__logo-image {
    display: block;
    width: auto;
    height: 48px;
    max-width: 175px;
    object-fit: contain;
}

/* Hamburger toggle */
.site-header__menu-toggle {
    grid-column: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--color-charcoal);
    cursor: pointer;
    border-radius: 4px;
}

.site-header__menu-toggle:focus-visible {
    outline: 2px solid var(--color-cyan);
    outline-offset: 2px;
}

/* Navigation */
.site-header__nav {
    display: none;
}

.site-header__nav-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.site-header__nav-list a {
    display: block;
    padding: 0.875rem 1rem;
    color: var(--color-charcoal);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-sans);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.site-header__nav-list a:focus-visible {
    color: var(--color-cyan);
    outline: 2px solid var(--color-cyan);
    outline-offset: -2px;
    border-radius: 4px;
}

.site-header__nav-account {
    border-top: 1px solid var(--color-gray-soft);
}

.site-header__nav-account a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Mobile open state — full viewport width dropdown */
.site-header__nav.is-open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-soft);
    box-shadow: 0 8px 16px rgba(28, 28, 28, 0.08);
}

/* Utilities (account + cart) */
.site-header__utilities {
    grid-column: 3;
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.site-header__icon-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    color: var(--color-charcoal);
    text-decoration: none;
    border-radius: 4px;
    transition: color var(--transition-fast);
}

.site-header__icon-btn:hover,
.site-header__icon-btn:focus-visible {
    color: var(--color-cyan);
}

.site-header__icon-btn:focus-visible {
    outline: 2px solid var(--color-cyan);
    outline-offset: 2px;
}

/* Cart badge — visible only when cart has items */
.site-header__cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    display: none;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background-color: var(--color-gold);
    color: var(--color-charcoal);
    border-radius: 50%;
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    pointer-events: none;
}

.site-header__cart-badge:not(:empty) {
    display: flex;
}

/* Hide account icon on mobile bar (available inside hamburger menu) */
.site-header__account {
    display: none;
}

/* ==========================================================================
   Desktop — three-zone horizontal layout
   ========================================================================== */

@media (min-width: 769px) {
    .site-header__inner {
        grid-template-columns: 1fr auto 1fr;
        gap: 2rem;
    }

    .site-header__menu-toggle {
        display: none;
    }

    .site-header__logo {
        grid-column: 1;
        justify-self: start;
    }

    .site-header__logo-image {
        height: 56px;
        max-width: 210px;
    }

    .site-header__nav {
        display: block;
        grid-column: 2;
        justify-self: center;
    }

    .site-header__nav.is-open {
        position: static;
        border-top: none;
        box-shadow: none;
    }

    .site-header__nav-list {
        flex-direction: row;
        align-items: center;
        gap: 2rem;
    }

    .site-header__nav-list a {
        padding: 0.25rem 0;
    }

    /* Desktop hover — center-zone nav links only */
    @media (hover: hover) and (pointer: fine) {
        .site-header__nav-list a:hover {
            color: var(--color-cyan);
        }
    }

    .site-header__nav-account {
        display: none;
    }

    .site-header__utilities {
        grid-column: 3;
    }

    .site-header__account {
        display: flex;
    }
}