/* ============================================================
   NAVBAR.CSS — Style nagłówka i nawigacji
   ============================================================ */

/* --- Bazowy kontener --- */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--navbar-height);
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

/* Wariant JASNY */
.navbar--light {
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.navbar--light .navbar__link {
    color: var(--color-slate-700);
}

.navbar--light .navbar__link:hover,
.navbar--light .navbar__link.active {
    color: var(--color-slate-950);
}

.navbar--light .navbar__hamburger span {
    background-color: var(--color-slate-900);
}

.navbar--light .navbar__mobile {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-slate-100);
}

.navbar--light .navbar__mobile-link {
    color: var(--color-slate-700);
    border-bottom: 1px solid var(--color-slate-100);
}

.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-elevated);
}

.navbar__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

/* --- Logo --- */

.navbar__logo img {
    height: 36px;
    width: auto;
}

/* --- Nawigacja desktop --- */

.navbar__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.navbar__links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.navbar__link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-slate-300);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.navbar__link:hover,
.navbar__link.active {
    color: var(--color-white);
}

.navbar__link.active {
    color: var(--color-primary-light);
}

/* --- Dropdown --- */

.navbar__dropdown {
    position: relative;
}

.navbar__dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    cursor: default;
}

.navbar__dropdown-chevron {
    transition: transform var(--transition-fast);
    opacity: 0.6;
}

.navbar__dropdown:hover .navbar__dropdown-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.navbar__dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: rgba(15, 23, 42, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-2);
    min-width: 190px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    backdrop-filter: blur(12px);
    z-index: 100;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

/* Niewidoczny mostek wypełniający lukę między togglem a menu,
   dzięki czemu hover nie ginie podczas przesuwania myszy w dół */
.navbar__dropdown-menu::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.navbar__dropdown:hover .navbar__dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.navbar__dropdown-item {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-slate-300);
    border-radius: var(--radius-lg);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    white-space: nowrap;
}

.navbar__dropdown-item:hover,
.navbar__dropdown-item.active {
    background: rgba(255, 255, 255, 0.07);
    color: var(--color-white);
}

/* Mobile — sublabel kategorii */
.navbar__mobile-sublabel {
    display: block;
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: var(--space-2) 0 var(--space-1);
}

.navbar__mobile-link--sub {
    padding-left: var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-slate-400);
}

/* --- Akcje (CTA + hamburger) --- */

.navbar__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.btn--navbar-cta {
    padding: var(--space-3) var(--space-8);
    font-size: var(--text-base);
    font-weight: var(--font-bold);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* --- Hamburger (mobile) --- */

.navbar__hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
}

.navbar__hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), opacity var(--transition-base);
    transform-origin: center;
}

/* Stan otwarty (X) */
.navbar__hamburger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.navbar__hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.navbar__hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Mobile menu --- */

.navbar__mobile {
    display: none;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background-color: var(--color-slate-950);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: var(--space-6) var(--container-padding);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity var(--transition-base), transform var(--transition-base);
    pointer-events: none;
}

.navbar__mobile.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.navbar__mobile-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.navbar__mobile-link {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-slate-300);
    padding: var(--space-2) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: color var(--transition-fast);
}

.navbar__mobile-link:hover,
.navbar__mobile-link.active {
    color: var(--color-white);
}

/* --- Responsive breakpoints --- */

@media (max-width: 1024px) {
    .navbar__nav {
        display: none;
    }

    .navbar__hamburger {
        display: flex;
    }

    .navbar__mobile {
        display: block;
    }

    .navbar__actions .btn {
        display: none;
    }
}