/**
 * Navigation Dropdown Styles
 * Ready for future dropdown and mega menu implementation
 *
 * @package ARTBID
 */

/* ========================================
   DROPDOWN BASE STYLES
   ======================================== */

/* Items with dropdowns */
.header-nav-item.has-dropdown {
    position: relative;
}

/* Dropdown toggle button */
.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    padding: 0.25rem;
    margin-left: 0.25rem;
    cursor: pointer;
    color: inherit;
    transition: opacity var(--transition-duration-200) var(--transition-timing-ease);
}

.dropdown-toggle:hover {
    opacity: 0.6;
}

.dropdown-toggle svg {
    transition: transform var(--transition-duration-200) var(--transition-timing-ease);
}

.has-dropdown.is-open .dropdown-toggle svg {
    transform: rotate(180deg);
}

/* Dropdown menu */
.header-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--color-base-white);
    border: var(--border-width-1) solid var(--color-gray-200);
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-duration-200) var(--transition-timing-ease);
    z-index: 100;
    margin-top: 0.5rem;
}

/* Show dropdown */
.has-dropdown.is-open .header-dropdown,
.has-dropdown:hover .header-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Dropdown menu items */
.header-dropdown .menu-item {
    display: block;
}

.header-dropdown .header-nav-link {
    display: block;
    padding: var(--spacing-scale-2) var(--spacing-scale-4);
    color: var(--color-base-black);
    font-size: var(--font-size-base);
    transition: background-color var(--transition-duration-200) var(--transition-timing-ease);
}

.header-dropdown .header-nav-link:hover {
    background-color: var(--color-gray-50);
    opacity: 1; /* Override parent opacity change */
}

/* Active/current item in dropdown */
.header-dropdown .menu-item.current-menu-item .header-nav-link {
    background-color: var(--color-gray-100);
    font-weight: 500;
}

/* ========================================
   MEGA MENU STYLES (Future Enhancement)
   ======================================== */

.has-mega-menu {
    position: static;
}

.header-dropdown.is-mega-menu {
    left: 0;
    right: 0;
    width: 100vw;
    max-width: var(--layout-container-wide);
    margin-left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-scale-8);
}

/* Mega menu grid */
.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-scale-8);
}

.mega-menu-column {
    min-width: 200px;
}

.mega-menu-heading {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-scale-3);
}

/* Menu item descriptions (for mega menu) */
.menu-item-description {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-scale-1);
    line-height: 1.4;
}

/* ========================================
   MOBILE DROPDOWN STYLES
   ======================================== */

@media (max-width: 1023px) {
    /* Hide dropdown toggle on mobile (use mobile menu instead) */
    .dropdown-toggle {
        display: none;
    }

    /* Reset dropdown styles for mobile menu */
    .header-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        margin-top: 0;
    }

    /* Mobile submenu styling */
    .header-dropdown .header-nav-link {
        padding-left: var(--spacing-scale-8);
        font-size: var(--font-size-sm);
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

/* Focus styles */
.dropdown-toggle:focus-visible,
.header-dropdown .header-nav-link:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Keyboard navigation support */
.header-nav-item:focus-within .header-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Screen reader text for dropdown toggle */
.dropdown-toggle .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}