/* =================================================================
   HEADER Y NAVEGACIÓN
   ================================================================= */

.site-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    width: auto;
}

/* Menú de navegación */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-menu > li {
    position: relative;
    margin: 0 var(--spacing-md);
}

.nav-menu a {
    color: var(--color-gray-900);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    display: block;
    transition: var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-primary);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-fast);
    list-style: none;
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    padding: var(--spacing-sm) var(--spacing-lg);
    display: block;
}

.dropdown-menu a:hover {
    background-color: var(--color-gray-100);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
    cursor: pointer;
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        transition: var(--transition-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu > li {
        width: 100%;
        margin: var(--spacing-sm) 0;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--color-gray-100);
    }
}