.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: transparent;
    border-bottom: 1px solid transparent;
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
    background-color: var(--color-bg);
    border-bottom-color: var(--color-border);
    box-shadow: 0 4px 20px rgba(46, 36, 28, 0.08);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    max-width: var(--container-width);
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.nav-logo-title {
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.7rem;
    color: var(--color-text);
}

.nav-logo-subtitle {
    margin-top: 5px;
    font-size: 0.62rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--color-accent-dark);
}

.logo-badge {
    height: 140px;
    width: 140px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-accent);
    object-fit: cover;
    background-color: var(--color-bg);
    box-shadow: 0 6px 20px rgba(46, 36, 28, 0.18);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
}

.nav-link.is-active {
    border-bottom-color: var(--color-text);
}

.nav-item-dropdown {
    position: relative;
}

.nav-link-dropdown {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-sm));
    left: 0;
    min-width: 260px;
    background-color: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: 0 12px 32px rgba(46, 36, 28, 0.12);
    padding: var(--space-xs) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.nav-item-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--color-text);
}

.dropdown-link:hover {
    background-color: var(--color-bg-alt);
}

.dropdown-link-icon {
    flex-shrink: 0;
    color: var(--color-accent-dark);
}

.nav-cta {
    background-color: var(--color-accent);
    color: var(--color-surface);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-social {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle-bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform 0.3s ease, opacity 0.2s ease;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

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

@media (max-width: 900px) {
    .nav-toggle {
        position: relative;
        z-index: 3;
    }

    .nav-links {
        position: fixed;
        inset: 0;
        z-index: 1;
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        align-items: stretch;
        justify-content: center;
        gap: 0;
        padding: 96px var(--space-lg) var(--space-lg);
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-16px);
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    }

    .nav-links.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-links li:has(.nav-link),
    .nav-links li:has(.nav-link-dropdown) {
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link,
    .nav-link-dropdown {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: var(--space-sm) 0;
        font-family: var(--font-heading);
        font-size: 1.5rem;
        letter-spacing: 0;
        text-transform: none;
        border-bottom: none;
    }

    .nav-link-dropdown svg {
        transition: transform 0.2s ease;
    }

    .nav-item-dropdown.is-open .nav-link-dropdown svg {
        transform: rotate(180deg);
    }

    .nav-item-dropdown {
        width: 100%;
    }

    .dropdown-menu {
        position: absolute;
        top: 100%;
        left: 0;
        z-index: 5;
        width: 100%;
        min-width: 0;
        max-height: 260px;
        overflow-y: auto;
        transform: none;
        background-color: var(--color-bg);
        box-shadow: 0 16px 32px rgba(46, 36, 28, 0.14);
        padding: 0 var(--space-xs) var(--space-xs) var(--space-md);
    }

    .dropdown-menu::-webkit-scrollbar {
        width: 6px;
    }

    .dropdown-menu::-webkit-scrollbar-track {
        background: transparent;
    }

    .dropdown-menu::-webkit-scrollbar-thumb {
        background-color: var(--color-border);
        border-radius: var(--radius-full);
    }

    .dropdown-link {
        padding: var(--space-xs) 0;
        font-size: 0.95rem;
    }

    .dropdown-link:hover {
        background-color: transparent;
        color: var(--color-accent-dark);
    }

    .nav-cta {
        display: block;
        width: 100%;
        margin-top: var(--space-md);
        text-align: center;
    }

    .nav-social {
        display: flex;
        justify-content: center;
        gap: var(--space-lg);
        margin-top: var(--space-lg);
        color: var(--color-text-muted);
    }

    .nav-social svg {
        width: 22px;
        height: 22px;
    }

    .nav-social a:hover {
        color: var(--color-accent-dark);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-logo-title {
        font-size: 1.35rem;
    }

    .nav-logo-subtitle {
        display: none;
    }
}