/* ==========================================================================
   Przystań — Nawigacja
   Sticky szklany pasek kurczący się przy scrollu + pełnoekranowe menu mobilne
   ze staggerowanym wejściem linków.
   ========================================================================== */

.navbar {
    position: fixed;
    inset: 0 0 auto;
    z-index: var(--z-navbar);
    height: var(--nav-height);
    transition: height var(--duration-base) var(--ease-out-soft);
}

/* Szkło paska leży na pseudoelemencie, a nie na samym .navbar: backdrop-filter
   tworzy blok zawierający dla potomków position: fixed, co przycinałoby
   pełnoekranowe menu mobilne do wysokości paska. */
.navbar::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: rgba(var(--white-rgb), 0.55);
    border-bottom: 1px solid transparent;
    -webkit-backdrop-filter: blur(16px) saturate(1.5);
    backdrop-filter: blur(16px) saturate(1.5);
    transition:
        background-color var(--duration-base) var(--ease-out-soft),
        border-color var(--duration-base) var(--ease-out-soft),
        box-shadow var(--duration-base) var(--ease-out-soft);
}

.navbar.is-scrolled {
    height: var(--nav-height-scrolled);
}

.navbar.is-scrolled::before {
    background: rgba(var(--white-rgb), 0.82);
    border-bottom-color: rgba(var(--dark-rgb), 0.08);
    box-shadow: 0 10px 30px -18px rgba(var(--dark-rgb), 0.45);
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .navbar::before {
        background: rgba(var(--white-rgb), 0.94);
    }
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    width: 100%;
    max-width: var(--container-max);
    height: 100%;
    margin-inline: auto;
    padding-inline: var(--container-gutter);
}

/* --- Logo --- */
.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-width: 0;
    transition: transform var(--duration-base) var(--ease-spring);
}

.logo:hover {
    transform: translateY(-1px);
}

.logo-mark {
    display: grid;
    place-items: center;
    width: clamp(42px, 3.4vw, 52px);
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 25%, rgba(var(--accent-rgb), 0.55), rgba(var(--secondary-rgb), 0.16));
    transition: height var(--duration-base) var(--ease-out-soft);
}

.logo-img {
    width: 82%;
    height: auto;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.12;
    min-width: 0;
}

.logo-text-line1 {
    font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--dark-color);
}

.logo-text-line2 {
    font-size: clamp(0.62rem, 0.56rem + 0.2vw, 0.74rem);
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--secondary-700);
}

/* --- Panel z linkami (desktop) --- */
.nav-panel {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 1.6vw, 2rem);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: clamp(0.25rem, 1vw, 0.75rem);
}

.nav-link {
    position: relative;
    display: block;
    padding: 0.55rem 0.85rem;
    border-radius: var(--radius-pill);
    font-size: var(--step-0);
    font-weight: 500;
    color: var(--dark-color);
    transition: color var(--duration-base) var(--ease-out-soft);
}

/* Pigułka podświetlenia rysowana pod tekstem, żeby nie przesuwać layoutu */
.nav-link::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: rgba(var(--secondary-rgb), 0.1);
    opacity: 0;
    transform: scale(0.85);
    transition:
        opacity var(--duration-base) var(--ease-out-soft),
        transform var(--duration-base) var(--ease-spring);
}

.nav-link span {
    position: relative;
}

.nav-link:hover::before,
.nav-link.is-active::before {
    opacity: 1;
    transform: scale(1);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--secondary-700);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
}

.icon-btn {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    color: var(--secondary-700);
    background: rgba(var(--secondary-rgb), 0.1);
    transition:
        transform var(--duration-base) var(--ease-spring),
        background-color var(--duration-base) var(--ease-out-soft),
        color var(--duration-base) var(--ease-out-soft);
}

.icon-btn:hover {
    transform: translateY(-2px);
    background: var(--secondary-color);
    color: var(--white);
}

.nav-cta {
    min-height: 2.75rem;
    padding: 0.55rem 1.25rem;
    font-size: var(--step--1);
}

/* --- Hamburger --- */
.hamburger {
    display: none;
    position: relative;
    z-index: 2;
    width: 2.9rem;
    height: 2.9rem;
    border-radius: var(--radius-sm);
    background: rgba(var(--dark-rgb), 0.06);
}

.hamburger__bar {
    position: absolute;
    left: 50%;
    width: 1.25rem;
    height: 2px;
    border-radius: 2px;
    background: var(--dark-color);
    transition:
        transform var(--duration-base) var(--ease-out-soft),
        opacity var(--duration-fast) var(--ease-out-soft);
}

.hamburger__bar:nth-child(1) { transform: translate(-50%, -7px); }
.hamburger__bar:nth-child(2) { transform: translate(-50%, 0); }
.hamburger__bar:nth-child(3) { transform: translate(-50%, 7px); }

.hamburger.is-active .hamburger__bar:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.hamburger.is-active .hamburger__bar:nth-child(2) { opacity: 0; }
.hamburger.is-active .hamburger__bar:nth-child(3) { transform: translate(-50%, 0) rotate(-45deg); }

/* --- Menu mobilne: pełny ekran --- */
@media (max-width: 1024px) {
    .hamburger {
        display: block;
    }

    /* Logo zostaje nad nakładką menu, żeby marka nie znikała po otwarciu */
    .logo {
        position: relative;
        z-index: 2;
    }

    .nav-panel {
        position: fixed;
        inset: 0;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-xl);
        padding: calc(var(--nav-height) + var(--space-xl)) var(--container-gutter) var(--space-2xl);
        background: linear-gradient(160deg, rgba(var(--light-rgb), 0.97), rgba(var(--accent-rgb), 0.9));
        -webkit-backdrop-filter: blur(24px);
        backdrop-filter: blur(24px);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        transition:
            opacity var(--duration-base) var(--ease-out-soft),
            transform var(--duration-base) var(--ease-out-soft),
            visibility 0s linear var(--duration-base);
        overflow-y: auto;
        overscroll-behavior: contain;
    }

    .nav-panel.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        transition-delay: 0s;
    }

    .nav-menu {
        flex-direction: column;
        gap: var(--space-xs);
        width: min(420px, 100%);
    }

    .nav-item {
        width: 100%;
        opacity: 0;
        transform: translateY(18px);
    }

    /* Staggerowane wejście linków — każdy z własnym opóźnieniem */
    .nav-panel.is-open .nav-item {
        animation: nav-item-in var(--duration-slow) var(--ease-out-soft) both;
        animation-delay: calc(90ms + var(--i) * 60ms);
    }

    @keyframes nav-item-in {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-link {
        padding: 0.9rem 1.25rem;
        border-radius: var(--radius-md);
        text-align: center;
        font-size: var(--step-2);
        font-weight: 600;
    }

    .nav-actions {
        flex-direction: column-reverse;
        gap: var(--space-sm);
        opacity: 0;
    }

    .nav-panel.is-open .nav-actions {
        animation: nav-item-in var(--duration-slow) var(--ease-out-soft) both;
        animation-delay: 420ms;
    }

    .nav-cta {
        min-height: 3.25rem;
        padding: 0.9rem 2rem;
        font-size: var(--step-0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .nav-item,
    .nav-actions {
        opacity: 1;
        transform: none;
    }
}

/* Blokada przewijania tła przy otwartym menu i lightboxie */
body.is-locked {
    overflow: hidden;
}