/* ==========================================================================
   HEADER — Sticky, transparent on hero, solid on scroll
   ========================================================================== */

.zk-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--zk-white);
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.zk-header.is-scrolled {
    border-color: var(--zk-yellow);
    box-shadow: 0 2px 20px rgba(0,0,0,.10);
}

.zk-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: var(--space-6);
}

/* --- Logo --- */
.zk-header__logo a,
.zk-header__logo .custom-logo-link {
    display: flex;
    align-items: center;
}

.zk-header__logo img,
.zk-header__logo .custom-logo {
    height: 48px;
    width: auto;
}

.zk-header__logo-text {
    text-decoration: none;
}

.zk-header__logo-main {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 900;
    color: var(--zk-black);
    letter-spacing: -0.02em;
}

/* --- Primary Nav --- */
.zk-header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

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

.zk-nav__list > li {
    position: relative;
}

.zk-nav__list > li > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--zk-black);
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
    letter-spacing: .01em;
}

.zk-nav__list > li > a:hover,
.zk-nav__list > li.current-menu-item > a,
.zk-nav__list > li.current-menu-ancestor > a {
    color: var(--zk-red);
    border-bottom-color: var(--zk-yellow);
}

/* Dropdown arrow */
.zk-nav__list > li.menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    margin-left: 2px;
    transition: transform var(--transition-fast);
}

.zk-nav__list > li.menu-item-has-children:hover > a::after {
    transform: rotate(180deg);
}

/* --- Dropdown --- */
.zk-nav__list .sub-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    background: var(--zk-white);
    border-radius: var(--radius-lg);
    border-top: 3px solid var(--zk-yellow);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2) 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-base);
    z-index: 100;
}

.zk-nav__list > li:hover .sub-menu,
.zk-nav__list > li:focus-within .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.zk-nav__list .sub-menu a {
    display: block;
    padding: var(--space-2) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--zk-gray-700);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.zk-nav__list .sub-menu a:hover {
    background: var(--zk-yellow-pale);
    color: var(--zk-red);
    padding-left: var(--space-8);
}

/* --- CTA Button --- */
.zk-header__cta {
    flex-shrink: 0;
}

.zk-header__cta .zk-btn {
    padding: 10px 20px;
    font-size: var(--text-xs);
    letter-spacing: .08em;
}

/* --- Hamburger --- */
.zk-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.zk-header__hamburger:hover {
    background: var(--zk-yellow-pale);
}

.zk-hamburger__bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--zk-black);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.zk-header__hamburger[aria-expanded="true"] .zk-hamburger__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.zk-header__hamburger[aria-expanded="true"] .zk-hamburger__bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.zk-header__hamburger[aria-expanded="true"] .zk-hamburger__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   MOBILE NAV OFFCANVAS
   ========================================================================== */

.zk-mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 2000;
    pointer-events: none;
    visibility: hidden;
}

.zk-mobile-nav.is-open {
    pointer-events: all;
    visibility: visible;
}

.zk-mobile-nav__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.55);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.zk-mobile-nav.is-open .zk-mobile-nav__overlay {
    opacity: 1;
}

.zk-mobile-nav__panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 90vw);
    background: var(--zk-white);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
}

.zk-mobile-nav.is-open .zk-mobile-nav__panel {
    transform: translateX(0);
}

.zk-mobile-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 2px solid var(--zk-yellow);
}

.zk-mobile-nav__brand {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: var(--text-xl);
}

.zk-mobile-nav__header .custom-logo {
    height: 40px;
    width: auto;
}

.zk-mobile-nav__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--zk-gray-100);
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.zk-mobile-nav__close:hover {
    background: var(--zk-yellow);
}

.zk-mobile-nav__menu {
    flex: 1;
    padding: var(--space-4) 0;
}

.zk-mobile-nav__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zk-mobile-nav__list li a {
    display: block;
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--zk-black);
    text-decoration: none;
    border-bottom: 1px solid var(--zk-gray-100);
    transition: background var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.zk-mobile-nav__list li a:hover,
.zk-mobile-nav__list li.current-menu-item a {
    background: var(--zk-yellow-pale);
    color: var(--zk-red);
    padding-left: var(--space-8);
}

.zk-mobile-nav__list .sub-menu {
    list-style: none;
    padding: 0;
    background: var(--zk-gray-100);
}

.zk-mobile-nav__list .sub-menu a {
    padding-left: var(--space-10);
    font-size: var(--text-sm);
    font-weight: 500;
}

.zk-mobile-nav__footer {
    padding: var(--space-6);
    border-top: 1px solid var(--zk-gray-100);
}

/* ==========================================================================
   WHATSAPP FLOAT
   ========================================================================== */

.zk-wa-float {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-6);
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 20px rgba(37,211,102,.4);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    color: var(--zk-white);
}

.zk-wa-float:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 8px 30px rgba(37,211,102,.5);
}

.zk-wa-float__icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   BODY OFFSET FOR STICKY HEADER
   ========================================================================== */

body {
    padding-top: 72px;
}

body.zk-front-page {
    padding-top: 72px;
}

/* ==========================================================================
   RESPONSIVE HEADER
   ========================================================================== */

@media (max-width: 1200px) {
    .zk-nav__list > li > a {
        padding: var(--space-2) var(--space-2);
        font-size: 0.8rem;
    }
}

@media (max-width: 1024px) {
    .zk-header__nav {
        display: none;
    }
    .zk-header__hamburger {
        display: flex;
    }
    .zk-header__cta {
        display: none;
    }
}

@media (max-width: 480px) {
    .zk-header__inner {
        height: 60px;
    }
    body,
    body.zk-front-page {
        padding-top: 60px;
    }
}

/* ==========================================================================
   HEADER — TOP BAR
   ========================================================================== */

.zk-header__topbar {
    background-color: var(--zk-black);
    color: var(--zk-white);
    font-size: var(--text-xs);
    padding: var(--space-2) 0;
}

.zk-header__topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.zk-header__topbar-left,
.zk-header__topbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.zk-header__topbar-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--zk-gray-300);
    font-size: var(--text-xs);
    transition: color var(--transition-fast);
}
.zk-header__topbar-link:hover { color: var(--zk-yellow); }

.zk-header__topbar-wa {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background-color: #25D366;
    color: var(--zk-white);
    padding: 2px var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    transition: opacity var(--transition-fast);
}
.zk-header__topbar-wa:hover { opacity: 0.9; color: var(--zk-white); }

.zk-header__social {
    color: var(--zk-gray-300);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
}
.zk-header__social:hover { color: var(--zk-yellow); }

/* ==========================================================================
   HEADER — MAIN
   ========================================================================== */

.zk-header__main {
    background-color: var(--zk-white);
    border-bottom: 1px solid var(--zk-gray-100);
}

.zk-header__main-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: var(--space-6);
}

/* Logo */
.zk-header__brand {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    text-decoration: none;
}
.zk-header__brand-name {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 900;
    color: var(--zk-black);
    letter-spacing: -0.02em;
}
.zk-header__brand-tagline {
    font-size: var(--text-xs);
    color: var(--zk-red);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Nav List */
.zk-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.zk-nav__list li a {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--zk-black);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    white-space: nowrap;
}
.zk-nav__list li a:hover,
.zk-nav__list li.current-menu-item > a,
.zk-nav__list li.current_page_item > a {
    color: var(--zk-red);
    background-color: var(--zk-yellow-pale);
}

/* Dropdown */
.zk-nav__list li.menu-item-has-children {
    position: relative;
}
.zk-nav__list li.menu-item-has-children > ul.sub-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    background: var(--zk-white);
    border: 1px solid var(--zk-gray-100);
    border-top: 3px solid var(--zk-yellow);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 100;
    padding: var(--space-2) 0;
    list-style: none;
}
.zk-nav__list li.menu-item-has-children:hover > ul.sub-menu { display: block; }
.zk-nav__list li.menu-item-has-children > ul.sub-menu li a {
    padding: var(--space-2) var(--space-4);
    border-radius: 0;
    font-size: var(--text-sm);
}

/* Header Actions */
.zk-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.zk-header__action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--zk-black);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.zk-header__action-btn:hover {
    background-color: var(--zk-gray-100);
    color: var(--zk-red);
}

.zk-header__cart {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--zk-black);
    transition: background-color var(--transition-fast);
}
.zk-header__cart:hover { background-color: var(--zk-gray-100); }

.zk-header__cart-count {
    position: absolute;
    top: 4px;
    right: 4px;
    background-color: var(--zk-red);
    color: var(--zk-white);
    font-size: 10px;
    font-weight: 700;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.zk-header__cta { display: none; }

.zk-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--zk-black);
    transition: background-color var(--transition-fast);
}
.zk-hamburger:hover { background-color: var(--zk-gray-100); }

/* Search Bar */
.zk-header__search {
    display: none;
    background-color: var(--zk-gray-100);
    padding: var(--space-4) 0;
    border-top: 2px solid var(--zk-yellow);
}
.zk-header__search.is-open { display: block; }
.zk-header__search .zk-container {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.zk-header__search-close {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--zk-gray-700);
    transition: background-color var(--transition-fast);
}
.zk-header__search-close:hover { background-color: var(--zk-gray-300); }

/* Scrolled state */
.zk-header.is-scrolled .zk-header__main {
    box-shadow: 0 2px 20px rgba(0,0,0,.08);
}

/* ==========================================================================
   MOBILE NAV
   ========================================================================== */

.zk-mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,.5);
    z-index: 1001;
}
.zk-mobile-nav-overlay.is-open { display: block; }

.zk-mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 90vw;
    background-color: var(--zk-white);
    z-index: 1002;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
}
.zk-mobile-nav.is-open { transform: translateX(0); }

.zk-mobile-nav__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 2px solid var(--zk-yellow);
    background-color: var(--zk-black);
}

.zk-mobile-nav__close {
    color: var(--zk-white);
    padding: var(--space-1);
}

.zk-mobile-nav__body {
    flex: 1;
    padding: var(--space-4) 0;
}

.zk-mobile-nav__list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.zk-mobile-nav__list li a {
    display: block;
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--zk-black);
    border-bottom: 1px solid var(--zk-gray-100);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.zk-mobile-nav__list li a:hover {
    background-color: var(--zk-yellow-pale);
    color: var(--zk-red);
}
.zk-mobile-nav__list ul.sub-menu {
    list-style: none;
    background-color: var(--zk-gray-100);
    padding-left: var(--space-4);
}

.zk-mobile-nav__footer {
    padding: var(--space-6);
    border-top: 1px solid var(--zk-gray-100);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

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

@media (min-width: 1024px) {
    .zk-header__cta { display: inline-flex; }
    .zk-hamburger    { display: none; }
}

@media (max-width: 1023px) {
    .zk-header__nav { display: none; }
    .zk-header__cta { display: none; }
}

@media (max-width: 767px) {
    .zk-header__topbar-left { display: none; }
}

/* Body padding — account for fixed header */
body {
    padding-top: 108px; /* topbar ~36px + main ~72px */
}

@media (max-width: 767px) {
    body { padding-top: 72px; }
    .zk-header__topbar { display: none; }
}