/* ==========================================================================
   RB Header Widget - White & Blue Theme
   ========================================================================== */

/* ---------- Reset / Base ---------- */

.rb-header {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    line-height: 1.5;
    position: relative;
    z-index: 9999;
}

.rb-header *,
.rb-header *::before,
.rb-header *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.rb-header a {
    text-decoration: none;
    color: inherit;
}

.rb-header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ---------- Top Bar ---------- */

.rb-header-topbar {
    background-color: #1E3A8A;
    color: #fff;
    font-size: 13px;
    padding: 8px 0;
}

.rb-header-topbar .rb-header-container {
    flex-wrap: wrap;
    gap: 10px;
}

.rb-header-topbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.rb-topbar-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.rb-topbar-item svg {
    flex-shrink: 0;
}

.rb-header-topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rb-social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    transition: background 0.3s ease;
}

.rb-social-icon:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ---------- Main Header ---------- */

.rb-header-main {
    background-color: #fff;
    padding: 16px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: padding 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

/* Sticky state */
.rb-header.is-sticky .rb-header-main {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99999;
    padding: 8px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Placeholder to prevent layout jump */
.rb-header.is-sticky .rb-header-spacer {
    display: block;
}

.rb-header-spacer {
    display: none;
}

/* ---------- Logo ---------- */

.rb-header-logo a {
    display: inline-flex;
    align-items: center;
}

.rb-logo-img {
    max-height: 48px;
    width: auto;
    transition: max-height 0.3s ease;
}

.rb-header.is-sticky .rb-logo-img {
    max-height: 36px;
}

.rb-logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #1E3A8A;
    letter-spacing: -0.5px;
    transition: font-size 0.3s ease;
}

.rb-header.is-sticky .rb-logo-text {
    font-size: 20px;
}

/* ---------- Navigation ---------- */

.rb-header-nav {
    display: flex;
    align-items: center;
}

.rb-nav-list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0;
    margin: 0;
    padding: 0;
}

.rb-nav-list li {
    position: relative;
}

.rb-nav-list > li > a {
    display: block;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: #1F2937;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.rb-nav-list > li > a:hover,
.rb-nav-list > li.current-menu-item > a {
    color: #2563EB;
}

/* Dropdown */
.rb-nav-list li .sub-menu {
    list-style: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    z-index: 100;
}

.rb-nav-list li:hover > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.rb-nav-list .sub-menu a {
    display: block;
    padding: 8px 20px;
    font-size: 14px;
    color: #374151;
    transition: background 0.2s ease, color 0.2s ease;
}

.rb-nav-list .sub-menu a:hover {
    background: #DBEAFE;
    color: #1E3A8A;
}

/* ---------- Actions ---------- */

.rb-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Search Button */
.rb-header-search-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #1F2937;
    padding: 8px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, background 0.2s ease;
}

.rb-header-search-btn:hover {
    color: #2563EB;
    background: #DBEAFE;
}

/* CTA Button */
.rb-header-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background-color: #1E3A8A;
    border-radius: 6px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    white-space: nowrap;
}

.rb-header-cta:hover {
    background-color: #2563EB;
    transform: translateY(-1px);
    color: #fff;
}

/* Hamburger */
.rb-header-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    gap: 5px;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.rb-header-hamburger:hover {
    background: #DBEAFE;
}

.rb-header-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #1F2937;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- Search Overlay ---------- */

.rb-header-search-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    display: flex;
    align-items: center;
    padding: 0 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    z-index: 200;
}

.rb-header-search-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

.rb-header-search-overlay form {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    gap: 10px;
}

.rb-header-search-overlay input[type="search"] {
    flex: 1;
    border: none;
    border-bottom: 2px solid #DBEAFE;
    padding: 10px 4px;
    font-size: 18px;
    outline: none;
    background: transparent;
    color: #1F2937;
    transition: border-color 0.2s ease;
}

.rb-header-search-overlay input[type="search"]:focus {
    border-color: #2563EB;
}

.rb-header-search-overlay button[type="submit"] {
    background: none;
    border: none;
    cursor: pointer;
    color: #1E3A8A;
    padding: 8px;
    display: inline-flex;
}

.rb-search-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 28px;
    color: #6B7280;
    padding: 8px;
    margin-left: 10px;
    line-height: 1;
    transition: color 0.2s ease;
}

.rb-search-close:hover {
    color: #1F2937;
}

/* ---------- Fullscreen Mobile Menu ---------- */

.rb-mobile-menu {
    position: fixed;
    inset: 0;
    background: #fff;
    z-index: 999999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.97);
    transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s ease;
}

.rb-mobile-menu.is-active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.rb-mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 36px;
    color: #1F2937;
    cursor: pointer;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease;
}

.rb-mobile-menu-close:hover {
    background: #F3F4F6;
}

.rb-mobile-nav-list {
    list-style: none;
    text-align: center;
    padding: 0;
    margin: 0;
}

.rb-mobile-nav-list li {
    margin: 0;
}

.rb-mobile-nav-list > li > a {
    display: block;
    padding: 14px 20px;
    font-size: 22px;
    font-weight: 600;
    color: #1F2937;
    transition: color 0.2s ease;
}

.rb-mobile-nav-list > li > a:hover,
.rb-mobile-nav-list > li.current-menu-item > a {
    color: #2563EB;
}

.rb-mobile-nav-list .sub-menu {
    list-style: none;
    padding: 0;
}

.rb-mobile-nav-list .sub-menu a {
    display: block;
    padding: 8px 20px;
    font-size: 17px;
    color: #6B7280;
    transition: color 0.2s ease;
}

.rb-mobile-nav-list .sub-menu a:hover {
    color: #2563EB;
}

.rb-mobile-cta {
    font-size: 16px;
    padding: 14px 40px;
    border-radius: 8px;
}

.rb-mobile-menu-social {
    display: flex;
    gap: 14px;
}

.rb-mobile-menu-social .rb-social-icon {
    background: #DBEAFE;
    color: #1E3A8A;
    width: 40px;
    height: 40px;
}

.rb-mobile-menu-social .rb-social-icon:hover {
    background: #1E3A8A;
    color: #fff;
}

/* ---------- Responsive ---------- */

@media (max-width: 991px) {
    .rb-nav-list > li > a {
        padding: 10px 12px;
        font-size: 14px;
    }

    .rb-header-cta {
        padding: 8px 18px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    /* Hide top bar on mobile */
    .rb-header-topbar {
        display: none;
    }

    /* Hide desktop nav and CTA */
    .rb-header-nav,
    .rb-header-actions .rb-header-cta {
        display: none;
    }

    /* Show hamburger */
    .rb-header-hamburger {
        display: flex;
    }

    /* Adjust logo */
    .rb-logo-text {
        font-size: 20px;
    }

    .rb-logo-img {
        max-height: 36px;
    }

    .rb-header.is-sticky .rb-logo-img {
        max-height: 30px;
    }

    .rb-header.is-sticky .rb-logo-text {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .rb-header-container {
        padding: 0 16px;
    }

    .rb-mobile-nav-list > li > a {
        font-size: 20px;
        padding: 12px 16px;
    }

    .rb-mobile-cta {
        padding: 12px 32px;
        font-size: 15px;
    }
}

/* ---------- Accessibility ---------- */

.rb-header button:focus-visible,
.rb-header a:focus-visible {
    outline: 2px solid #2563EB;
    outline-offset: 2px;
}

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