/* ===========================
   Split header – full-bleed bar + centered content + dropdowns + mobile burger
   =========================== */
:root {
    --bar-h: 76px;
    /* výška bílého pruhu (desktop) */
    --logo-overhang: 18px;
    /* kolik logo přesahuje dolů */
    --container-max: 1440px;
    /* max šířka obsahu (desktop) */
    --container-pad: clamp(16px,4vw,56px);
    /* vnitřní odsazení obsahu */
    --item-gap: clamp(24px,3vw,64px);
    /* mezery mezi položkami */
    --gap-to-logo: clamp(20px,3vw,60px);
    /* mezera mezi logem a položkami */
}

/* Full-bleed bílý pruh (funguje i uvnitř .layout-container) */
.site-header {
    position: relative;
    z-index: 50;
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    background: #2f88c9;
    border-bottom: 1px solid rgba(0,0,0,.08);
}

/* Vnitřní obálka – full width (kontejner je na .split-nav) */
.site-header__inner {
    height: var(--bar-h);
    margin: 0;
    padding: 0;
    display: block;
}

/* Centrovaný kontejner s gridem: levo | logo | pravo */
.split-nav {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-inline: var(--container-pad); display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    /* vertikální centrování */
}

/* Strany menu – položky k logu (ne ke krajům) */
.split-nav__side {
    display: flex;
    align-items: center;
    gap: var(--item-gap);
    list-style: none;
    margin: 0;
    padding: 0;
}

.split-nav__side--left {
    justify-content: flex-end;
    margin-right: var(--gap-to-logo);
}

.split-nav__side--right {
    justify-content: flex-start;
    margin-left: var(--gap-to-logo);
}

/* Odkazy – vysoké jako pruh => vždy uprostřed */
.split-nav__item a, .split-nav__link {
    display: inline-flex;
    align-items: center;
    justify-items: center;
    width: 100%;
    text-align: center;
    height: 3em;
    text-decoration: none;
    color: #fff;
    line-height: 1;
    padding: 0;
    transition: opacity .15s ease;
}

.split-nav__item a:hover, .split-nav__link:hover {
    opacity: .7;
}

/* Logo uprostřed – horní hrana zarovnaná s horní hranou pruhu, přesah dolů */
.split-nav__logo {
    display: inline-flex;
    align-items: flex-start;
    /* logo zarovnáno NAHORU */
    justify-content: center;
    height: var(--bar-h);
    position: relative;
    z-index: 60;
    text-decoration: none;
    overflow: visible;
    /* může přesahovat dolů */
}

.split-nav__logo img {
    display: block;
    width: auto;
    max-height: calc(1.4 * (var(--bar-h) + var(--logo-overhang) + 10px));
    /* ~+40% */
}

/* ===== Mobilní hlavička: logo vlevo, burger vpravo ===== */
.brand-mobile {
    display: none;
}

/* Burger (desktop skrytý) */
.burger {
    display: none;
    background: none;
    border: 0;
    padding: 8px;
    margin: 0;
    cursor: pointer;
}

.burger__bar {
    display: block;
    width: 24px;
    height: 2px;
    margin: 5px 0;
    background: #111;
}

/* Mobilní menu panel – default skryté (přes třídy) */
.mobile-menu[hidden] {
    display: none !important;
}

.mobile-menu {
    display: none;
}

/* ===== Desktop dropdown ===== */
@media (min-width: 1001px) {
    .split-nav__item {
        position: relative;
    }

    .has-children > .submenu-toggle {
        display: none;
    }

    .submenu {
        position: absolute;
        left: 0;
        top: 3.9em;
        min-width: 220px;
        max-width: 320px;
        background: #2f88c9;
        box-shadow: 0 12px 28px rgba(0,0,0,.08);
        list-style: none;
        margin: 0;
        padding: 6px 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(8px);
        transition: opacity .18s ease, transform .18s ease, visibility 0s linear .2s;
        z-index: 100;
    }

    .split-nav__side--right .submenu {
        right: 0;
        left: 0;
    }

    .submenu__item {
        position: relative;
        text-align: center;
    }

    .submenu__link {
        display: block;
        padding: 0;
        line-height: 100%;
        height: 1em;
        width: 100%;
        padding-left: 1em !important;
        text-decoration: none;
        color: #111;
        white-space: nowrap;
    }

    .submenu__link:hover {
        background: #185b8d;
    }

    .split-nav__item:hover > .submenu, .split-nav__item:focus-within > .submenu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        transition: opacity .18s ease, transform .18s ease, visibility 0s;
    }

    .submenu--level2 {
        top: -6px;
        left: 100%;
        margin-left: 6px;
    }

    .split-nav__side--right .submenu--level2 {
        left: auto;
        right: 100%;
        margin-left: 0;
        margin-right: 6px;
    }

    .has-children > .submenu__link::after {
        content: '›';
        float: right;
        opacity: .5;
    }
}

/* ===== Mobile (≤1000px) ===== */
@media (max-width: 1000px) {
    /* Skryj desktopové menu a logo uprostřed */ .split-nav__side, .split-nav__logo {
        display:none;
    }

    /* Layout: logo vlevo | burger vpravo */
    .site-header__inner {
        height: 60px;
        position: relative;
        display: grid;
        grid-template-columns: 1fr auto;
        align-items: center;
        padding-inline: var(--container-pad); }

    .brand-mobile {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        text-decoration: none;
        height: 60px;
    }

    .brand-mobile img {
        display: block;
        height: 36px;
        width: auto;
    }

    .burger {
        display: inline-grid;
        place-items: center;
        justify-self: end;
        width: 42px;
        height: 42px;
        border-radius: 8px;
        position: relative;
        transition: transform .35s ease;
    }

    .burger__bar {
        width: 26px;
        height: 2px;
        margin: 5px 0;
        background: #ffffff;
        border-radius: 1px;
        transition: transform .35s ease, opacity .25s ease, width .25s ease;
        transform-origin: 50% 50%;
    }

    .burger.is-open {
        transform: rotate(180deg);
    }

    .burger.is-open .burger__bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
        width: 26px;
    }

    .burger.is-open .burger__bar:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .burger.is-open .burger__bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
        width: 26px;
    }

    /* Rozbalovací panel */
    .mobile-menu {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid #eee;
        box-shadow: 0 8px 24px rgba(0,0,0,.08);
        overflow: hidden;
        max-height: 0;
        opacity: 0;
        visibility: hidden;
        transition: max-height .35s ease, opacity .25s ease, visibility 0s linear .35s;
    }

    .mobile-menu.is-open {
        max-height: 70vh;
        opacity: 1;
        visibility: visible;
        transition: max-height .35s ease, opacity .25s ease, visibility 0s;
    }

    .mobile-menu__list {
        list-style: none;
        padding: 12px var(--container-pad) 18px;
        margin: 0;
        display: grid;
        gap: 10px;
    }

    .mobile-menu__list a {
        display: block;
        padding: 12px 0;
        font-size: 1.05rem;
        text-decoration: none;
        color: #111;
    }

    /* Mobile accordion submenu */
    .mobile-item {
        position: relative;
    }

    .mobile-item.has-children > .mobile-subtoggle, .mobile-subitem.has-children > .mobile-subtoggle {
        appearance: none;
        border: 0;
        background: none;
        width: 36px;
        height: 36px;
        border-radius: 6px;
        background-color: #2f88c9;
        margin-left: 8px;
        position: absolute;
        right: var(--container-pad);
        top: 4px;
        cursor: pointer;
    }

    .mobile-item a, .mobile-subitem a {
        display: inline-block;
        padding-right: 44px;
    }

        .mobile-subtoggle::after{
            font-weight: bold;
            color: #ffffff;
            font-size: 1.5em;
            content: ">";
    }

    .mobile-submenu {
        list-style: none;
        margin: 0;
        padding: 0 0 0 16px;
        max-height: 0;
        overflow: hidden;
        opacity: 0.0;
        transition: max-height .28s ease, opacity .24s ease;
    }

    .mobile-submenu.is-open {
        max-height: 800px;
        opacity: 1;
    }
}