@import url('https://img.zh-eng.com/house/font/fonts.css');

:root {
    --primary-color: #0056b3;
    --secondary-color: #ff6b00;
    --dark-gray: #333333;
    --light-gray: #f5f5f5;
    --white: #ffffff;
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--dark-gray);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #004494;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--white);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: #e55a00;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.product-card {
    transition: all 0.3s ease;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.product-card img {
    transition: transform 0.5s ease;
}

.product-card:hover img {
    transform: scale(1.05);
}

.news-card {
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.event-card {
    transition: all 0.3s ease;
    border-left: 4px solid var(--secondary-color);
}

.event-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://p26-doubao-search-sign.byteimg.com/labis/936081b5b8764c6075f39c522c92639e~tplv-be4g95zd3a-image.jpeg?lk3s=feb11e32&x-expires=1789202143&x-signature=p6ETx6KexcYCvHDT5rvFKWMfBzU%3D');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.navbar {
    transition: all 0.3s ease;
    background-color: transparent;
}

.navbar.scrolled {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.navbar .nav-link {
    color: var(--white);
    position: relative;
    padding-bottom: 8px;
}

.navbar.scrolled .nav-link {
    color: var(--dark-gray);
}

.navbar.scrolled .logo-text {
    color: var(--dark-gray);
    transform: scale(0.8);
}

.navbar.scrolled .logo-img {
    transform: scale(0.8);
}

.navbar.scrolled .menu-toggle-icon {
    color: var(--dark-gray);
}

.navbar .nav-link:hover {
    color: var(--secondary-color);
}

.navbar .nav-link.active {
    color: var(--secondary-color);
}

/* Add triangle indicator for active nav links before scroll */
.navbar:not(.scrolled) .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid white;
}

/* Keep orange line for scrolled navbar */
.navbar.scrolled .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--secondary-color);
}

.mobile-menu {
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
}

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #004494;
}

/* Dropdown menu - only show when hovering over the link text */
.dropdown-menu {
    pointer-events: none;
    border-top: 5px solid var(--secondary-color);
    min-width: 280px;
}

.group:hover .dropdown-menu {
    pointer-events: auto;
}

.dropdown-menu a {
    border-bottom: 1px solid #e5e7eb;
    white-space: nowrap;
    padding: 12px 16px;
    display: block;
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}