/* PASS – společná navigace (všechny veřejné stránky) */

.topnav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 56px;
    /* Musí být nad .nav-scrim (rozmazání + ztmavení) – jinak překryje i rozbalené menu */
    z-index: 2600;
    isolation: isolate;
    background: #000;
    border-bottom: 1px solid rgba(255,255,255,.06);
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    will-change: transform;
}

.topnav-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    height: 56px;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    box-sizing: border-box;
    width: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #fff;
    flex: 0 0 auto;
    min-width: 0;
}

/* Navigace vedle brandu; na desktopu se přesune doprava */
.nav-mid {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pravá část: přepínač vzhledu + hamburger (fixní šířka, bez poskakování) */
.nav-end {
    display: flex;
    flex: 0 0 auto;
    flex-shrink: 0;
    align-items: center;
    justify-content: flex-end;
    gap: 0;
    width: 128px; /* motiv + přihlášení + hamburger */
}

.nav-theme,
.nav-login {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: rgba(255, 255, 255, 0.82);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.nav-theme:hover,
.nav-theme:focus-visible,
.nav-login:hover,
.nav-login:focus-visible {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    outline: none;
}

.nav-theme-ico {
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-theme-ico svg,
.nav-login svg {
    display: block;
}

.nav-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    border-radius: 7px;
    flex-shrink: 0;
}

.nav-brand-text {
    font-family: 'Outfit', 'Inter', sans-serif;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -.5px;
}

/* Stejné šířky záložek v navigaci */
.nav-links {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 0;
    width: 100%;
    max-width: 32rem;
    margin: 0 auto;
}

.nav-pill {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: 7px 8px;
    min-width: 0;
    text-align: center;
    box-sizing: border-box;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
    color: rgba(255,255,255,.5);
    text-decoration: none;
    transition: color .2s cubic-bezier(.16,1,.3,1), background .2s cubic-bezier(.16,1,.3,1);
}

.nav-pill:hover {
    color: rgba(255,255,255,.88);
    background: rgba(255,255,255,.08);
}

.nav-pill-active {
    color: #fff;
    background: rgba(255,255,255,.12);
}

/* --- Hamburger (mobil) --- */
.nav-toggle {
    display: none;
    position: relative;
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: #fff;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: background .2s ease;
    -webkit-tap-highlight-color: transparent;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
    background: rgba(255,255,255,.08);
    outline: none;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    position: relative;
    transition: transform .32s cubic-bezier(.16,1,.3,1), opacity .2s ease, top .32s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
    content: "";
    position: absolute;
    left: 0;
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

#topnav.is-open .nav-toggle-bars {
    background: transparent;
}
#topnav.is-open .nav-toggle-bars::before {
    top: 0;
    transform: rotate(45deg);
}
#topnav.is-open .nav-toggle-bars::after {
    top: 0;
    transform: rotate(-45deg);
}

.nav-scrim[hidden] {
    display: none !important;
}

/* Desktop: PASS vlevo, vše ostatní vpravo */
@media (min-width: 901px) {
    .topnav-inner {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 12px;
    }
    .nav-brand {
        max-width: none;
    }
    .nav-mid {
        min-height: 56px;
        flex: 0 0 auto;
        margin-left: auto;
        width: auto;
    }
    .nav-end {
        width: auto;
    }
    .nav-links {
        display: inline-flex;
        width: auto;
        max-width: none;
        gap: 4px;
        margin: 0;
        padding: 3px;
        border: 1px solid rgba(255, 255, 255, 0.06);
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.035);
        justify-content: flex-end;
    }
    .nav-pill {
        min-width: 0;
        padding: 7px 12px;
    }
}

/* Mobilie: vlevo logo, vpravo režim + hamburger; položky menu doprava */
@media (max-width: 900px) {
    .topnav-inner {
        position: relative;
        padding: 0 16px 0 16px;
        gap: 10px;
    }

    .nav-brand {
        max-width: none;
        min-width: 0;
        margin-right: auto;
    }

    .nav-mid {
        flex: 0 0 0;
        width: 0;
        min-width: 0;
        height: 0;
        margin: 0;
        padding: 0;
        overflow: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        z-index: 2610;
        max-width: 1000px;
        width: 100%;
        margin-left: auto;
        margin-right: auto;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        /* horizont: symetrie + ochrana proti oříznutí (safe area) */
        padding: 12px
            max(1.1rem, calc(0.65rem + env(safe-area-inset-right, 0px)))
            22px
            max(1.1rem, calc(0.65rem + env(safe-area-inset-left, 0px)));
        background: #0a0a0a;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 20px 48px rgba(0, 0, 0, 0.55);
        gap: 3px;
        max-height: min(70dvh, 420px);
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        box-sizing: border-box;
        transform: translate3d(0, -16px, 0);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        will-change: opacity, transform;
        transition:
            opacity 0.38s cubic-bezier(0.2, 0.85, 0.2, 1),
            transform 0.38s cubic-bezier(0.2, 0.85, 0.2, 1),
            visibility 0.38s;
    }

    #topnav:not(.is-open) .nav-pill {
        opacity: 0;
        transform: translate3d(10px, 0, 0);
    }

    .nav-pill {
        min-width: 0;
        width: 100%;
        box-sizing: border-box;
        text-align: right;
        /* větší odstup z pravé kvůli čitelnosti + výřez/zaoblení displeje */
        padding: 0.75rem max(1.1rem, calc(0.55rem + env(safe-area-inset-right, 0px)))
            0.75rem max(1.1rem, calc(0.55rem + env(safe-area-inset-left, 0px)));
        border-radius: 12px;
        transition: opacity 0.32s cubic-bezier(0.2, 0.85, 0.2, 1), transform 0.32s cubic-bezier(0.2, 0.85, 0.2, 1);
    }

    #topnav.is-open .nav-pill {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
    #topnav.is-open .nav-pill:nth-child(1) { transition-delay: 0.04s; }
    #topnav.is-open .nav-pill:nth-child(2) { transition-delay: 0.09s; }
    #topnav.is-open .nav-pill:nth-child(3) { transition-delay: 0.14s; }
    #topnav.is-open .nav-pill:nth-child(4) { transition-delay: 0.19s; }
    #topnav.is-open .nav-pill:nth-child(5) { transition-delay: 0.24s; }
    #topnav.is-open .nav-pill:nth-child(6) { transition-delay: 0.29s; }

    #topnav.is-open .nav-links {
        transform: translate3d(0, 0, 0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .nav-scrim {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        bottom: 0;
        /* Pod celým #topnav (2600) – nezasahuje do rozbaleného menu */
        z-index: 2000;
        display: block;
        margin: 0;
        background: rgba(0,0,0,.35);
        backdrop-filter: blur(10px) saturate(1.1);
        -webkit-backdrop-filter: blur(10px) saturate(1.1);
        cursor: pointer;
        animation: navScrimIn .3s ease both;
    }
}

@keyframes navScrimIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

body.nav-open {
    overflow: hidden;
    touch-action: none;
}

@media (max-width: 380px) {
    .topnav-inner { padding: 0 12px; }
}

@media (max-width: 900px) and (prefers-reduced-motion: reduce) {
    .nav-links {
        transition-duration: 0.01ms;
    }
    .nav-pill {
        transition-duration: 0.01ms;
    }
    #topnav.is-open .nav-pill:nth-child(1),
    #topnav.is-open .nav-pill:nth-child(2),
    #topnav.is-open .nav-pill:nth-child(3),
    #topnav.is-open .nav-pill:nth-child(4),
    #topnav.is-open .nav-pill:nth-child(5),
    #topnav.is-open .nav-pill:nth-child(6) {
        transition-delay: 0s;
    }
    #topnav:not(.is-open) .nav-pill {
        transform: none;
    }
}