/* ==========================================
   QIFAN SPORTS EQUIPMENT - HEADER STYLES
   Topbar, Mainbar, Navigation, Search
   ========================================== */

/* === Header Container === */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

/* === Topbar === */
.topbar {
    background: var(--accent-color);
    color: var(--white);
    height: 50px;
    padding: 10px 0;
    font-size: 0.875rem;
}

.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar-left {
    display: flex;
    gap: 30px;
    align-items: center;
}

.topbar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
}

.topbar-item i {
    color: var(--primary-color);
}

.topbar-item a {
    color: var(--white);
    transition: var(--transition-base);
}

.topbar-item a:hover {
    color: var(--primary-color);
}

.topbar-right {
    display: flex;
    gap: 15px;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* === Mainbar === */
.mainbar {
    /* padding: 15px 0; */
    height: 80px;
    display: flex;
}

.mainbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    transition: var(--transition-base);
}

.logo:hover img {
    transform: scale(1.05);
}

/* === Navigation === */
.nav {
    flex: 1;
    display: flex;
    height: 100%;
    justify-content: center;
}

.nav-menu {
    display: flex;
    height: 100%;
    gap: 45px;
    align-items: center;
}

.nav-item {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.nav-link {
    display: block;
    padding: 10px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link i {
    font-size: 0.75rem;
    margin-left: 4px;
    transition: transform 0.3s ease;
}

.nav-item:hover .nav-link i {
    transform: rotate(180deg);
}

/* === Megamenu === */
.has-megamenu {
    position: static;
}

.megamenu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    padding: 40px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 999;
}

.has-megamenu:hover .megamenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.megamenu-grid {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 40px;
}

/* Megamenu Intro */
/* .megamenu-left {
    padding-right: 40px;
    border-right: 1px solid var(--border-color);
} */

.megamenu-intro h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.megamenu-intro p {
    color: var(--text-medium);
    margin-bottom: 30px;
    line-height: 1.6;
}

.megamenu-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.megamenu-feature:first-child {
    grid-column: span 2;
}

.megamenu-feature {
    background: #f3f3f3;
    padding: 12px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition-base);
}

.megamenu-feature i {
    color: var(--primary-color);
    font-size: 0.875rem;
}

.megamenu-feature .megamenu-feature-a {
    font-size: 0.875rem;
    width: 100%;
    font-weight: 600;
    color: var(--text-dark);
}

.megamenu-feature:hover {
    background: var(--primary-color);
}

.megamenu-feature:hover i,
.megamenu-feature:hover .megamenu-feature-a {
    color: var(--white);
}

/* Megamenu Product Cards */
.megamenu-right {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.mega-product-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: var(--transition-base);
    min-width: 0;
    /* Important for grid/flex containers */
    width: 100%;
}

.mega-product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.mega-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.mega-product-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--white);
    background: var(--primary-color);
    z-index: 1;
}

.mega-product-badge.badge-new {
    background: #28a745;
}

.mega-product-badge.badge-best {
    background: #dc3545;
}

.mega-product-info {
    padding: 20px;
}

.mega-product-info h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    transition: var(--transition-base);
}

.mega-product-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.mega-tag {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--secondary-color);
    color: var(--text-medium);
    border-radius: 10px;
    text-transform: uppercase;
}

.mega-product-info p {
    font-size: 0.875rem;
    color: var(--text-medium);
    margin-bottom: 15px;
    line-height: 1.4;
}

.mega-product-params {
    margin-bottom: 20px;
}

.mega-product-params li {
    font-size: 0.8rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 5px;
}

.mega-product-params li i {
    font-size: 0.7rem;
    color: var(--primary-color);
}

.mega-product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-dark);
    transition: var(--transition-base);
}

.mega-product-link i {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
}

.mega-product-card:hover {
    box-shadow: var(--shadow-md);
    /* border-color: var(--primary-color); */
    transform: translateY(-5px);
}

.mega-product-card:hover .mega-product-image img {
    transform: scale(1.1);
}

.mega-product-card:hover .mega-product-info h4 {
    color: var(--primary-color);
}

.mega-product-card:hover .mega-product-link {
    color: var(--primary-color);
}

.mega-product-card:hover .mega-product-link i {
    transform: translateX(5px);
}

/* === Header Actions === */
.header-actions {
    display: flex;
    gap: 20px;
    align-items: center;
}

.search-icon,
.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    color: var(--text-dark);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-base);
}

.search-icon:hover,
.menu-toggle:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
}

/* === Search Modal === */
.search-modal {
    height: 130px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 30px 0;
    box-shadow: var(--shadow-lg);
    z-index: 9998;
    transform: translateY(-100%);
    transition: transform 0.4s ease;
}

.search-modal.active {
    transform: translateY(0);
}

.search-modal .container {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-form {
    flex: 1;
    display: flex;
    gap: 15px;
}

.search-input {
    flex: 1;
    padding: 15px 20px;
    font-size: 1.125rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-submit {
    padding: 15px 35px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.search-submit:hover {
    background: var(--primary-dark);
}

.search-close {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition-base);
}

.search-close:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: rotate(90deg);
}

/* === Mobile Menu === */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    padding: 80px 30px 30px;
    transition: right 0.4s ease;
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu .nav-menu {
    flex-direction: column;
    gap: 0;
    align-items: stretch;
}

.mobile-menu .nav-link {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

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

/* === Responsive Design === */
@media (max-width: 1200px) {
    .megamenu-grid {
        gap: 20px;
    }

    .megamenu-left {
        padding-right: 20px;
    }

    .megamenu-intro h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        gap: 25px;
    }

    .nav-link {
        font-size: 0.95rem;
    }

    .megamenu-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .megamenu-left {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-right: 0;
        padding-bottom: 20px;
    }

    .megamenu-features {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .topbar {
        padding: 8px 0;
        font-size: 0.8rem;
        height: auto;
    }

    .topbar-left {
        gap: 15px;
    }

    .topbar-item {
        gap: 5px;
    }

    .social-links {
        gap: 8px;
    }

    .social-link {
        width: 28px;
        height: 28px;
        font-size: 0.875rem;
    }

    .mainbar {
        padding: 12px 0;
    }

    .logo img {
        height: 40px;
    }

    .nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .mobile-menu,
    .mobile-menu-overlay {
        display: block;
    }

    .header-actions .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }

    .search-modal {
        padding: 20px 0;
    }

    .search-input {
        padding: 12px 16px;
        font-size: 1rem;
    }

    .search-submit {
        padding: 12px 25px;
        font-size: 0.95rem;
    }
}
.nav-menu .menu-item{
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.nav-menu .menu-item a{
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}
@media (max-width: 480px) {
    .topbar-left {
        flex-direction: column;
        gap: 5px;
        align-items: flex-start;
    }

    .topbar-right {
        gap: 10px;
    }

    .header-actions .btn {
        display: none;
    }

    .megamenu {
        display: none;
    }

    .search-form {
        flex-direction: column;
    }

    .search-submit {
        width: 100%;
    }
}