/**
 * Reversal — header (adapted from EE Holdings header pattern, light theme)
 */

.rvl-header.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--rvl-border);
    transition: box-shadow 0.2s ease, background 0.2s ease;
}

.rvl-header.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 8px 32px rgba(15, 24, 34, 0.1);
}

.rvl-header .header-container {
    max-width: var(--rvl-container-wide);
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--rvl-header-height);
    gap: 1.5rem;
}

.rvl-header .header-logo a {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--rvl-text);
}

.rvl-header .logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.rvl-header .logo-tagline {
    display: none;
    font-size: 0.6875rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--rvl-text-subtle);
    white-space: nowrap;
}

.rvl-header .header-nav {
    display: none;
    flex: 1;
    justify-content: center;
}

.rvl-header .nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
    align-items: center;
}

.rvl-header .nav-item {
    position: relative;
}

.rvl-header .nav-link {
    display: block;
    padding: 0.65rem 0.9rem;
    color: var(--rvl-text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: color 0.2s ease;
    position: relative;
    white-space: nowrap;
}

.rvl-header .nav-link:hover,
.rvl-header .nav-link:focus-visible,
.rvl-header .nav-link.active {
    color: var(--rvl-text);
    outline: none;
}

.rvl-header .nav-dropdown-trigger {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
    padding-right: 1.35rem;
}

.rvl-header .nav-dropdown-trigger::before {
    content: '';
    position: absolute;
    right: 0.35rem;
    top: 50%;
    margin-top: -3px;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.2s ease;
}

.rvl-header .nav-item-has-dropdown:hover .nav-dropdown-trigger,
.rvl-header .nav-item-has-dropdown.is-open .nav-dropdown-trigger {
    color: var(--rvl-blue-bright);
}

.rvl-header .nav-item-has-dropdown.is-open .nav-dropdown-trigger::before,
.rvl-header .nav-item-has-dropdown:hover .nav-dropdown-trigger::before {
    transform: rotate(-135deg);
}

.rvl-header .nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: -2px;
    min-width: 280px;
    padding: 0.5rem 0;
    list-style: none;
    background: var(--rvl-dropdown);
    border: 1px solid var(--rvl-border);
    border-radius: 0 0 var(--rvl-radius) var(--rvl-radius);
    box-shadow: var(--rvl-shadow);
    z-index: 1001;
}

.rvl-header .nav-dropdown-mega {
    min-width: 320px;
}

.rvl-header .nav-dropdown-link {
    display: block;
    padding: 0.75rem 1.1rem;
    color: var(--rvl-text);
    text-decoration: none;
    transition: background 0.15s ease;
}

.rvl-header .nav-dropdown-link:hover,
.rvl-header .nav-dropdown-link:focus-visible {
    background: var(--rvl-blue-soft);
    outline: none;
}

.rvl-header .nav-dropdown-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.rvl-header .nav-dropdown-desc {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.8125rem;
    color: var(--rvl-text-subtle);
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
    line-height: 1.4;
}

.rvl-header .header-actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.rvl-header .action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--rvl-border);
    color: var(--rvl-text-muted);
    cursor: pointer;
    text-decoration: none;
    border-radius: 8px;
    font-family: inherit;
    transition: all 0.2s ease;
}

.rvl-header .consultation-btn {
    display: none;
    width: auto;
    padding: 0.55rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: var(--rvl-blue-soft);
    border-color: rgba(0, 102, 204, 0.35);
    color: var(--rvl-blue-bright);
}

.rvl-header .consultation-btn:hover {
    background: var(--rvl-blue);
    color: #fff;
    border-color: var(--rvl-blue);
}

.rvl-header .mobile-menu-toggle {
    flex-direction: column;
    gap: 4px;
    width: 42px;
    height: 42px;
    padding: 0.5rem;
}

.rvl-header .hamburger-line {
    width: 18px;
    height: 2px;
    background: currentColor;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.rvl-header .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.rvl-header .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.rvl-header .mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Mobile drawer */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    backdrop-filter: blur(4px);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 88vw);
    background: var(--rvl-bg-elevated);
    z-index: 9999;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    border-left: 1px solid var(--rvl-border);
    box-shadow: -8px 0 32px rgba(15, 24, 34, 0.12);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    border-bottom: 1px solid var(--rvl-border);
    position: sticky;
    top: 0;
    background: var(--rvl-bg-elevated);
    z-index: 1;
}

.mobile-logo {
    height: 26px;
    width: auto;
}

.mobile-menu-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--rvl-border);
    color: var(--rvl-text-muted);
    border-radius: 8px;
    cursor: pointer;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0.5rem 0;
}

.mobile-nav-item {
    border-bottom: 1px solid var(--rvl-border);
}

.mobile-nav-link,
.mobile-nav-sub-trigger {
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    color: var(--rvl-text);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    background: none;
    border: none;
    text-align: left;
    font-family: inherit;
    cursor: pointer;
}

.mobile-nav-sub-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-nav-sub-trigger::after {
    content: '';
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.2s ease;
}

.rvl-mobile-nav-item-has-sub.expanded .mobile-nav-sub-trigger::after {
    transform: rotate(-135deg);
}

.mobile-nav-sublist {
    list-style: none;
    margin: 0;
    padding: 0;
    background: rgba(15, 24, 34, 0.03);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
}

.mobile-nav-sublink {
    display: block;
    padding: 0.75rem 1.25rem 0.75rem 2rem;
    color: var(--rvl-text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.mobile-nav-sublink:hover,
.mobile-nav-sublink.active {
    color: var(--rvl-blue-bright);
    background: var(--rvl-blue-soft);
}

.mobile-nav-divider {
    height: 0.75rem;
    background: rgba(15, 24, 34, 0.04);
    border-bottom: none;
}

.mobile-nav-button {
    margin: 0.75rem 1.25rem;
    padding: 0.875rem 1.25rem;
    text-align: center;
    border: 1px solid rgba(0, 102, 204, 0.35);
    border-radius: 6px;
    background: var(--rvl-blue-soft);
    color: var(--rvl-blue-bright);
}

body.menu-open {
    overflow: hidden;
}

@media (min-width: 768px) {
    .rvl-header .header-nav {
        display: flex;
    }

    .rvl-header .consultation-btn {
        display: inline-flex;
    }

    .rvl-header .mobile-menu-toggle {
        display: none;
    }

    .rvl-header .logo-tagline {
        display: block;
    }

    .rvl-header .logo-img {
        height: 36px;
    }
}

@media (min-width: 1024px) {
    .rvl-header .header-container {
        padding: 0 2rem;
    }

    .rvl-header .nav-list {
        gap: 0.35rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .rvl-header.site-header,
    .mobile-menu,
    .mobile-menu-overlay,
    .rvl-header .nav-link,
    .rvl-header .action-btn {
        transition: none;
    }
}

.nav-link:focus-visible,
.nav-dropdown-trigger:focus-visible,
.nav-dropdown-link:focus-visible,
.action-btn:focus-visible,
.mobile-nav-link:focus-visible,
.mobile-nav-sublink:focus-visible {
    outline: 2px solid var(--rvl-blue);
    outline-offset: 2px;
}