/* ===== NAVIGATION MODULE ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-background);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
}

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

.nav-logo-link {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-logo-link:hover {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
    margin: 0;
    padding: 0;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle-line {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

@media (max-width: 768px) {
    .nav {
        position: sticky;
        top: 0;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-sm);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .nav-container {
        justify-content: center;
        padding: 0 var(--spacing-md);
        height: 64px;
    }

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

    .nav-logo-link {
        text-align: center;
        font-size: var(--font-size-lg);
    }

    .nav-menu,
    .nav-toggle {
        display: none !important;
    }
}