/* ============================================
   HSB MEGA MENU SYSTEM
   Home State Bank of Minnesota
   Created: November 2025

   Modern, accessible mega menu replacement for Superfish
   Maintains database-driven structure from field table
   Uses CSS variables from site-theme.css
   ============================================ */

/* ============================================
   BASE NAVIGATION BAR
   ============================================ */

.hsb-mega-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 25px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px 0 0;
    list-style: none;
    background: var(--hsb-blue-primary);
    position: relative;
    z-index: 100;
}

.hsb-mega-nav > li {
    position: relative;
    text-align: center;
}

.hsb-mega-nav > li > a {
    display: block;
    padding: 6px 10px !important;
    font-family: var(--hsb-font-primary);
    font-size: 14px;
    text-transform: uppercase;
    color: var(--hsb-white);
    text-decoration: none;
    transition: background-color var(--hsb-transition-normal);
    position: relative;
}

/* Dropdown arrow indicator for items with submenus */
.hsb-mega-nav > li.has-mega > a::after,
.hsb-mega-nav > li > a[aria-haspopup]::after {
    content: '\f078'; /* FontAwesome chevron-down */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    margin-left: 6px;
    opacity: 0.8;
    transition: transform var(--hsb-transition-fast);
}

/* Rotate arrow when mega menu is active */
.hsb-mega-nav > li.has-mega > a[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

.hsb-mega-nav > li > a:hover,
.hsb-mega-nav > li > a:focus {
    background: var(--hsb-blue-dark);
}

/* Active page indicator */
.hsb-mega-nav > li.active-page > a {
    background: var(--hsb-blue-dark);
    box-shadow: inset 0 -4px 0 var(--hsb-gold);
}

/* Special styling for Contact/Sales buttons */
.hsb-mega-nav > li.no-back > a {
    background: transparent;
}

.hsb-mega-nav > li.sf-sales > a {
    background: var(--hsb-gold);
    color: var(--hsb-white);
    font-weight: bold;
}

.hsb-mega-nav > li.sf-sales > a:hover,
.hsb-mega-nav > li.sf-sales > a:focus {
    background: var(--hsb-gold-dark);
}

/* ============================================
   MEGA DROPDOWN CONTAINER
   ============================================ */

.mega-dropdown {
    position: absolute;
    top: auto;
    left: 50%;
    margin-left: -50vw;
    width: 100vw;
    background: var(--hsb-white);
    border-top: 4px solid var(--hsb-gold);
    box-shadow: var(--hsb-shadow-lg);
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--hsb-transition-normal),
                transform var(--hsb-transition-normal);
    z-index: 1100;
}

/* Show mega dropdown with .mega-active class (JavaScript-driven) */
.mega-dropdown.mega-active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.mega-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* Default: 4 columns for 1600px+ */
    max-width: 1600px;
    gap: 30px;
    margin: 0 auto;
    padding: 40px 30px;
}

/* Dynamic column count based on number of children */
.mega-dropdown[data-columns="1"] .mega-container {
    grid-template-columns: repeat(1, 1fr);
}

.mega-dropdown[data-columns="2"] .mega-container {
    grid-template-columns: repeat(2, 1fr);
}

.mega-dropdown[data-columns="3"] .mega-container {
    grid-template-columns: repeat(3, 1fr);
}

.mega-dropdown[data-columns="4"] .mega-container {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   COLUMN STYLES
   ============================================ */

.mega-column {
    display: flex;
    flex-direction: column;
}

.mega-column-header {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-family: var(--hsb-font-primary);
    font-size: 16px;
    text-transform: uppercase;
    color: var(--hsb-blue-primary);
    margin: 0 0 20px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--hsb-grey-medium);
    line-height: 1.4;
    text-align: left;
}

.mega-column-header i {
    font-size: var(--hsb-icon-size-md);
    color: var(--hsb-gold);
    margin-top: 2px; /* Align icon with first line of text */
    flex-shrink: 0; /* Prevent icon from shrinking */
}

.mega-links {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.mega-links li {
    margin-bottom: 8px;
}

.mega-dropdown .mega-links a {
    display: inline-block;
    font-family: var(--hsb-font-regular);
    font-size: 17px;
    font-weight: bold;
    color: var(--hsb-grey) !important;
    text-decoration: none;
    padding: 4px 0;
    transition: all var(--hsb-transition-fast);
    position: relative;
}

.mega-dropdown .mega-links a:hover,
.mega-dropdown .mega-links a:focus {
    color: var(--hsb-blue-primary) !important;
    transform: translateX(5px);
}

.mega-links a::before {
    content: '\f105'; /* FontAwesome chevron-right */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 8px;
    color: var(--hsb-gold);
    opacity: 0;
    transform: translateX(-5px);
    transition: all var(--hsb-transition-fast);
}

.mega-links a:hover::before,
.mega-links a:focus::before {
    opacity: 1;
    transform: translateX(0);
}

/* Nested links (children of parent items) */
.mega-dropdown .mega-links .nested {
    padding-left: 20px;
    font-size: 13px;
}

.mega-dropdown .mega-links .nested a {
    font-size: 13px;
    font-weight: normal;
    color: var(--hsb-grey-dark) !important;
}

.mega-links .nested a::before {
    content: '\f0da'; /* FontAwesome angle-right (smaller) */
}

/* ============================================
   FEATURED CONTENT COLUMN
   ============================================ */

.mega-featured {
    display: flex;
    flex-direction: column;
}

.mega-featured-image {
    width: 100%;
    height: auto;
    border-radius: var(--hsb-radius-md);
    object-fit: cover;
}

.mega-featured-title {
    font-family: var(--hsb-font-primary);
    font-size: 16px;
    text-transform: uppercase;
    color: var(--hsb-blue-primary);
    margin: 0 0 20px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--hsb-grey-medium);
    line-height: 1.4;
    text-align: left;
}

.mega-featured-desc {
    font-family: var(--hsb-font-regular);
    font-size: 14px;
    color: var(--hsb-grey);
    margin: 0 0 15px 0;
    line-height: 1.5;
    background: var(--hsb-grey-light);
    border: 2px solid var(--hsb-gold);
    border-radius: var(--hsb-radius-lg);
    padding: 20px;
}

.mega-featured-cta {
    display: inline-block;
    padding: 10px 20px;
    background: var(--hsb-gold);
    color: var(--hsb-white);
    font-family: var(--hsb-font-primary);
    font-size: 14px;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: var(--hsb-radius-md);
    text-align: center;
    transition: all var(--hsb-transition-normal);
    align-self: flex-start;
}

.mega-featured-cta:hover,
.mega-featured-cta:focus {
    background: var(--hsb-gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--hsb-shadow-md);
}

/* ============================================
   STANDARD DROPDOWN (non-mega items)
   ============================================ */

/* Keep support for standard nested ul dropdowns */
.hsb-mega-nav li ul {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 250px;
    background: var(--hsb-white);
    border-top: 2px solid var(--hsb-gold);
    box-shadow: var(--hsb-shadow-md);
    list-style: none;
    padding: 10px 0;
    margin: 0;
    display: none;
    z-index: 1100;
}

.hsb-mega-nav li:hover > ul,
.hsb-mega-nav li:focus-within > ul {
    display: block;
}

.hsb-mega-nav li ul li {
    position: relative;
    text-align: left;
}

.hsb-mega-nav li ul li a {
    display: block;
    padding: 10px 20px;
    font-family: var(--hsb-font-regular);
    font-size: 14px;
    color: var(--hsb-grey);
    text-decoration: none;
    text-transform: none;
    transition: all var(--hsb-transition-fast);
}

.hsb-mega-nav li ul li a:hover,
.hsb-mega-nav li ul li a:focus {
    background: var(--hsb-grey-light);
    color: var(--hsb-blue-primary);
    padding-left: 25px;
}

/* Nested submenu positioning */
.hsb-mega-nav li ul li ul {
    top: 0;
    left: 100%;
    border-top: 2px solid var(--hsb-gold);
}

/* Flip submenu left if it goes off-screen */
.hsb-mega-nav li ul li ul.submenu-left {
    left: auto;
    right: 100%;
}

/* ============================================
   ACCESSIBILITY - FOCUS STATES
   ============================================ */

.hsb-mega-nav a:focus,
.mega-links a:focus,
.mega-featured-cta:focus {
    outline: 2px solid var(--hsb-gold);
    outline-offset: 2px;
}

/* Keyboard navigation support - handled by JavaScript with .mega-active class */

/* Skip to content link (for screen readers) */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--hsb-gold);
    color: var(--hsb-white);
    padding: 8px 16px;
    text-decoration: none;
    font-family: var(--hsb-font-primary);
    z-index: 10000;
}

.skip-to-content:focus {
    top: 0;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Below 1600px: Reduce columns but respect data-columns attribute */
@media (max-width: 1599px) {
    /* Only reduce to 3 columns if there are 4+ children */
    .mega-dropdown[data-columns="4"] .mega-container {
        grid-template-columns: repeat(3, 1fr);
    }

    .mega-container {
        gap: 25px;
        padding: 35px 25px;
    }

    .hsb-mega-nav > li > a {
        font-size: 13px;
        padding: 10px 12px;
    }
}

/* Below 1200px: Further reduce columns */
@media (max-width: 1199px) {
    /* 4 columns becomes 2, 3 columns becomes 2, 2 stays 2, 1 stays 1 */
    .mega-dropdown[data-columns="4"] .mega-container,
    .mega-dropdown[data-columns="3"] .mega-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .mega-container {
        gap: 25px;
        padding: 30px 20px;
    }

    .hsb-mega-nav > li > a {
        font-size: 13px;
        padding: 10px 12px;
    }

    .mega-column-header {
        font-size: 15px;
    }

    .mega-links a {
        font-size: 14px;
    }
}

/* Below 900px: Continue with 2 columns but adjust spacing */
@media (max-width: 899px) {
    /* All multi-column menus become 2 columns */
    .mega-dropdown[data-columns="4"] .mega-container,
    .mega-dropdown[data-columns="3"] .mega-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .mega-container {
        gap: 20px;
        padding: 25px 15px;
    }

    .hsb-mega-nav > li > a {
        font-size: 12px;
        padding: 10px 8px;
    }

    .mega-column-header {
        font-size: 14px;
    }

    .mega-links a {
        font-size: 13px;
    }
}

/* Mobile: Hide mega nav completely, mobile menu takes over */
@media (max-width: 767px) {
    .hsb-mega-nav {
        display: none !important;
    }

    .mega-dropdown {
        display: none !important;
    }
}

/* ============================================
   ANIMATIONS & TRANSITIONS
   ============================================ */

/* Smooth fade-in for mega dropdowns */
@keyframes megaFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mega-dropdown.mega-active {
    animation: megaFadeIn var(--hsb-transition-normal) ease-out;
}

/* Hover effect for columns */
.mega-column:hover .mega-column-header {
    color: var(--hsb-blue-dark);
}

/* ============================================
   LOADING STATE
   ============================================ */

.mega-dropdown.loading {
    pointer-events: none;
}

.mega-dropdown.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid var(--hsb-grey-light);
    border-top-color: var(--hsb-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .hsb-mega-nav,
    .mega-dropdown {
        display: none !important;
    }
}

/* ============================================
   HIGH CONTRAST MODE SUPPORT
   ============================================ */

@media (prefers-contrast: high) {
    .mega-dropdown {
        border: 2px solid currentColor;
    }

    .mega-links a:focus,
    .hsb-mega-nav a:focus {
        outline: 3px solid currentColor;
    }
}

/* ============================================
   REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    .mega-dropdown,
    .mega-links a,
    .mega-featured-cta,
    .hsb-mega-nav > li > a {
        transition: none !important;
        animation: none !important;
    }

    .mega-dropdown.mega-active {
        animation: none;
    }
}