/* ==========================================================================
   Header v2 — Sticky header, mega menu, mobile overlay
   Loaded after main.css to override legacy header styles.
   ========================================================================== */

/* Hide legacy topbar */
.dtr-topbar { display: none; }


/* ── Header bar ── */

.dtr-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    border-bottom: 1px solid var(--dtr-color-border);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.dtr-header--scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    border-bottom-color: transparent;
}

.dtr-header__bar {
    position: relative;
}

.dtr-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--dtr-space-lg);
    height: 64px;
}

@media (min-width: 1024px) {
    .dtr-header__inner {
        height: 72px;
    }
}


/* ── Logo ── */

.dtr-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    flex-shrink: 0;
    color: var(--dtr-color-text);
    transition: opacity var(--dtr-transition-fast);
}

.dtr-logo:hover {
    opacity: 0.85;
    text-decoration: none;
    color: var(--dtr-color-text);
}

.dtr-logo__icon {
    flex-shrink: 0;
}

.dtr-logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.dtr-logo__name {
    font-family: var(--dtr-font-heading);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--dtr-color-text);
}

.dtr-logo__sub {
    font-family: var(--dtr-font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--dtr-color-primary);
}

@media (min-width: 1024px) {
    .dtr-logo__name {
        font-size: 1.15rem;
    }
    .dtr-logo__sub {
        font-size: 0.72rem;
    }
}


/* ── Desktop nav ── */

.dtr-nav {
    display: none;
}

@media (min-width: 1024px) {
    .dtr-nav {
        display: flex;
        align-items: center;
    }
}

.dtr-nav__list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dtr-nav__link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.55rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 550;
    color: var(--dtr-color-text);
    text-decoration: none;
    border-radius: var(--dtr-radius);
    border: none;
    background: none;
    cursor: pointer;
    font-family: var(--dtr-font-body);
    transition: color var(--dtr-transition-fast), background var(--dtr-transition-fast);
    position: relative;
}

.dtr-nav__link:hover,
.dtr-nav__link[aria-expanded="true"] {
    color: var(--dtr-color-primary);
    background: var(--dtr-color-primary-lt);
    text-decoration: none;
}

.dtr-nav__link::after {
    display: none;
}

.dtr-nav__chevron {
    transition: transform 0.25s ease;
    margin-top: 1px;
}

.dtr-nav__mega-trigger[aria-expanded="true"] .dtr-nav__chevron {
    transform: rotate(180deg);
}


/* ── Header actions (search + hamburger) ── */

.dtr-header__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ── Hamburger ── */

.dtr-mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    border-radius: var(--dtr-radius);
    transition: background var(--dtr-transition-fast);
}

.dtr-mobile-toggle:hover {
    background: var(--dtr-color-bg-alt);
}

@media (min-width: 1024px) {
    .dtr-mobile-toggle {
        display: none;
    }
}

.dtr-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 20px;
}

.dtr-hamburger span {
    display: block;
    height: 2px;
    background: var(--dtr-color-text);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.dtr-mobile-toggle[aria-expanded="true"] .dtr-hamburger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.dtr-mobile-toggle[aria-expanded="true"] .dtr-hamburger span:nth-child(2) {
    opacity: 0;
}

.dtr-mobile-toggle[aria-expanded="true"] .dtr-hamburger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ── Mega menu ── */

.dtr-mega {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--dtr-color-border);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    z-index: 999;
}

.dtr-mega.is-open {
    display: block;
    animation: dtr-fadeSlideDown 0.25s ease;
}

@keyframes dtr-fadeSlideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dtr-mega__inner {
    display: grid;
    grid-template-columns: repeat(4, 1fr) auto;
    gap: 0;
    padding: var(--dtr-space-xl) 0;
}

.dtr-mega__col {
    padding: 0 var(--dtr-space-lg);
    border-right: 1px solid var(--dtr-color-border-lt);
}

.dtr-mega__col:first-child {
    padding-left: 0;
}

.dtr-mega__heading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--dtr-font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--dtr-color-text-muted);
    margin-bottom: var(--dtr-space-md);
    padding-bottom: var(--dtr-space-sm);
    border-bottom: 2px solid var(--dtr-color-primary-lt);
}

.dtr-mega__heading svg {
    color: var(--dtr-color-primary);
    flex-shrink: 0;
}

.dtr-mega__links {
    list-style: none;
}

.dtr-mega__links li {
    margin-bottom: 0.15rem;
}

.dtr-mega__links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.45rem 0.6rem;
    font-size: 0.88rem;
    font-weight: 450;
    color: var(--dtr-color-text);
    text-decoration: none;
    border-radius: var(--dtr-radius-sm);
    transition: background var(--dtr-transition-fast), color var(--dtr-transition-fast);
}

.dtr-mega__links a:hover {
    background: var(--dtr-color-primary-lt);
    color: var(--dtr-color-primary);
    text-decoration: none;
}

.dtr-mega__count {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--dtr-color-text-light);
    background: var(--dtr-color-bg-alt);
    padding: 0.1rem 0.4rem;
    border-radius: var(--dtr-radius-full);
    min-width: 1.3rem;
    text-align: center;
}

.dtr-mega__links a:hover .dtr-mega__count {
    background: rgba(37,99,235,0.08);
    color: var(--dtr-color-primary);
}


/* ── Mega CTA ── */

.dtr-mega__cta {
    padding-left: var(--dtr-space-lg);
    min-width: 200px;
    display: flex;
    align-items: stretch;
}

.dtr-mega__cta-inner {
    background: linear-gradient(135deg, var(--dtr-color-primary), #1d4ed8);
    border-radius: var(--dtr-radius-lg);
    padding: var(--dtr-space-lg);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
}

.dtr-mega__cta-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: var(--dtr-radius-full);
    margin-bottom: var(--dtr-space-sm);
    width: fit-content;
}

.dtr-mega__cta-title {
    font-family: var(--dtr-font-heading);
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: var(--dtr-space-xs);
    line-height: var(--dtr-leading-tight);
}

.dtr-mega__cta-desc {
    font-size: 0.78rem;
    opacity: 0.85;
    line-height: 1.45;
    margin-bottom: var(--dtr-space-md);
}

.dtr-mega__cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: #fff;
    color: var(--dtr-color-primary);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: var(--dtr-radius);
    text-decoration: none;
    transition: transform var(--dtr-transition-fast), box-shadow var(--dtr-transition-fast);
}

.dtr-mega__cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    text-decoration: none;
    color: var(--dtr-color-primary-dk);
}


/* ── Mobile menu overlay ── */

.dtr-mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: var(--dtr-color-bg);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.dtr-mobile-menu.is-open {
    transform: translateX(0);
}

.dtr-mobile-menu[aria-hidden="true"] {
    visibility: hidden;
}

.dtr-mobile-menu.is-open[aria-hidden="false"] {
    visibility: visible;
}

.dtr-mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--dtr-space-md) var(--dtr-space-lg);
    border-bottom: 1px solid var(--dtr-color-border);
    min-height: 64px;
    flex-shrink: 0;
}

.dtr-mobile-menu__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--dtr-color-border);
    border-radius: var(--dtr-radius-full);
    cursor: pointer;
    color: var(--dtr-color-text-muted);
    transition: all var(--dtr-transition-fast);
}

.dtr-mobile-menu__close:hover {
    background: var(--dtr-color-bg-alt);
    color: var(--dtr-color-text);
}

.dtr-mobile-menu__body {
    flex: 1;
    padding: var(--dtr-space-md) var(--dtr-space-lg);
    overflow-y: auto;
}

.dtr-mobile-menu__list {
    list-style: none;
}

.dtr-mobile-menu__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.9rem 0;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dtr-color-text);
    text-decoration: none;
    border: none;
    background: none;
    cursor: pointer;
    font-family: var(--dtr-font-body);
    border-bottom: 1px solid var(--dtr-color-border-lt);
    transition: color var(--dtr-transition-fast);
}

.dtr-mobile-menu__link:hover {
    color: var(--dtr-color-primary);
    text-decoration: none;
}

.dtr-mobile-menu__chevron {
    transition: transform 0.25s ease;
    color: var(--dtr-color-text-muted);
}

.dtr-mobile-menu__acc-trigger[aria-expanded="true"] .dtr-mobile-menu__chevron {
    transform: rotate(180deg);
}

.dtr-mobile-menu__acc-panel {
    padding: var(--dtr-space-sm) 0 var(--dtr-space-md);
}

.dtr-mobile-menu__acc-panel[hidden] {
    display: none;
}

.dtr-mobile-menu__group {
    margin-bottom: var(--dtr-space-md);
}

.dtr-mobile-menu__group:last-child {
    margin-bottom: 0;
}

.dtr-mobile-menu__group-title {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--dtr-color-text-light);
    padding: var(--dtr-space-xs) 0 var(--dtr-space-xs) var(--dtr-space-md);
}

.dtr-mobile-menu__sublist {
    list-style: none;
}

.dtr-mobile-menu__sublist a {
    display: block;
    padding: 0.55rem var(--dtr-space-md);
    font-size: 0.92rem;
    font-weight: 450;
    color: var(--dtr-color-text);
    text-decoration: none;
    border-radius: var(--dtr-radius-sm);
    transition: background var(--dtr-transition-fast), color var(--dtr-transition-fast);
}

.dtr-mobile-menu__sublist a:hover {
    background: var(--dtr-color-primary-lt);
    color: var(--dtr-color-primary);
}


/* ── Mobile CTA ── */

.dtr-mobile-menu__cta {
    margin-top: var(--dtr-space-xl);
    text-align: center;
}

.dtr-mobile-menu__cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.85rem var(--dtr-space-lg);
    background: linear-gradient(135deg, var(--dtr-color-primary), #1d4ed8);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: var(--dtr-radius-lg);
    transition: transform var(--dtr-transition-fast), box-shadow var(--dtr-transition-fast);
}

.dtr-mobile-menu__cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37,99,235,0.3);
    text-decoration: none;
    color: #fff;
}

.dtr-mobile-menu__cta-disc {
    font-size: 0.72rem;
    color: var(--dtr-color-text-light);
    margin-top: var(--dtr-space-xs);
}


/* ── Mobile search ── */

.dtr-mobile-menu__search {
    padding: var(--dtr-space-md) var(--dtr-space-lg) var(--dtr-space-xl);
    border-top: 1px solid var(--dtr-color-border-lt);
    flex-shrink: 0;
}

.dtr-mobile-menu__search .dtr-search-form {
    max-width: none;
}


/* ── Body lock when mobile menu open ── */

body.dtr-menu-open {
    overflow: hidden;
}


/* ── Admin bar offset ── */

.admin-bar .dtr-header {
    top: 32px;
}

@media (max-width: 782px) {
    .admin-bar .dtr-header {
        top: 46px;
    }
}

.admin-bar .dtr-mobile-menu {
    top: 46px;
}

@media (min-width: 783px) {
    .admin-bar .dtr-mobile-menu {
        top: 32px;
    }
}