/* ==========================================================
   navbar.css — Navigation (Desktop + Mobile)
   Sticky on Scroll, Hamburger-Menü, Active-State.
   ========================================================== */

/* --------------------------------------------------------
   Navbar-Wrapper
   -------------------------------------------------------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-navbar);
    background-color: var(--color-white);
    transition: box-shadow var(--transition-base);
}

.navbar--scrolled {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.5rem;
}

/* --------------------------------------------------------
   Logo / Wordmark
   -------------------------------------------------------- */
.navbar__logo {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    white-space: nowrap;
}

.navbar__logo:hover {
    text-decoration: none;
}

/* --------------------------------------------------------
   Desktop navigation
   -------------------------------------------------------- */
.navbar__links {
    display: none;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.navbar__link {
    position: relative;
    color: var(--color-text);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
    transition: color var(--transition-base);
}

.navbar__link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

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

.navbar__link--active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 1px;
}

/* --------------------------------------------------------
   Desktop CTA (right side of navigation)
   -------------------------------------------------------- */
.navbar__cta {
    display: none;
}

/* --------------------------------------------------------
   Hamburger button (mobile)
   -------------------------------------------------------- */
.navbar__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 2.75rem;
    height: 2.75rem;
    padding: var(--space-sm);
    cursor: pointer;
}

.navbar__toggle-bar {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition-base),
    opacity var(--transition-base);
}

/* Hamburger → X animation */
.navbar__toggle--open .navbar__toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__toggle--open .navbar__toggle-bar:nth-child(2) {
    opacity: 0;
}

.navbar__toggle--open .navbar__toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------
   Mobile menu (full-screen overlay)
   -------------------------------------------------------- */
.navbar__mobile-menu {
    position: fixed;
    inset: 4.5rem 0 0 0;
    z-index: var(--z-overlay);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    background-color: var(--color-white);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow),
    visibility var(--transition-slow);
}

.navbar__mobile-menu--open {
    opacity: 1;
    visibility: visible;
}

.navbar__mobile-menu .navbar__link {
    font-size: var(--font-size-h3);
}

/* --------------------------------------------------------
   Responsive: Desktop from 768px
   -------------------------------------------------------- */
@media (min-width: 48rem) {
    .navbar__links {
        display: flex;
    }

    .navbar__cta {
        display: inline-flex;
    }

    .navbar__toggle {
        display: none;
    }

    .navbar__mobile-menu {
        display: none;
    }
}