/* Basic Reset & Global Styles */
:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
    --border-color: #dee2e6;
    --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --header-height: 80px;
    --footer-height: auto; /* dynamic */
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family-sans-serif);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, text-decoration 0.3s ease;
}

a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--dark-bg);
    color: #fff;
    padding: 8px 12px;
    z-index: 9999;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* Header Styles */
.site-header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.header-top-bar {
    background-color: var(--dark-bg);
    color: #fff;
    padding: 8px 0;
    font-size: 0.85em;
}

.header-top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.announcement-bar {
    margin: 0;
}

.announcement-link {
    color: var(--accent-color);
    margin-left: 10px;
}

.utility-links {
    display: flex;
    gap: 15px;
}

.utility-links a {
    color: #fff;
    font-size: 0.9em;
}

.language-selector select {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-6.5%200-12.3%203.2-16.1%208.1-3.8%204.9-4.2%2011.6-1.1%2017.1l133.9%20224.6c3.2%205.4%209.1%208.6%2015.6%208.6s12.4-3.2%2015.6-8.6l133.9-224.6c3.1-5.5%202.7-12.2-.9-17.1z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 12px;
    padding-right: 25px; /* space for arrow */
}

.language-selector select option {
    color: var(--text-color); /* Options should be readable */
    background-color: #fff;
}

.header-main-nav {
    padding: 15px 0;
}

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

.logo img {
    height: 40px;
    width: auto;
}

.menu-toggle {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: relative;
    z-index: 1001;
}

.menu-toggle .icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.nav-menu {
    display: flex;
    gap: 25px;
}

.nav-menu .menu-item {
    position: relative;
}

.nav-menu .menu-item > a {
    display: block;
    padding: 10px 0;
    font-weight: 500;
    color: var(--text-color);
}

.nav-menu .menu-item > a:hover {
    color: var(--primary-color);
}

.nav-menu .submenu {
    display: none;
    position: absolute;
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    min-width: 200px;
    z-index: 10;
    padding: 10px 0;
    border-radius: 4px;
    top: 100%;
    left: 0;
}

.nav-menu .has-submenu:hover > .submenu {
    display: block;
}

.nav-menu .submenu li a {
    padding: 8px 20px;
    display: block;
    color: var(--text-color);
}

.nav-menu .submenu li a:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.nav-menu .submenu-level-2 {
    left: 100%;
    top: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-form {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    padding: 5px 10px;
}

.search-form input[type="search"] {
    border: none;
    outline: none;
    padding: 5px;
    width: 150px;
    font-size: 0.9em;
}

.search-form button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
}

.user-area {
    display: flex;
    gap: 15px;
    align-items: center;
}

.user-area a {
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 5px;
}

.user-area a:hover {
    color: var(--primary-color);
}

.cart-count-display {
    background-color: var(--accent-color);
    color: #fff;
    border-radius: 50%;
    font-size: 0.7em;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: -8px; /* overlap with icon */
    position: relative;
    top: -8px;
    left: -8px;
    line-height: 1;
}

/* Footer Styles */
.site-footer {
    background-color: var(--dark-bg);
    color: #fff;
    padding: 40px 0 20px;
    font-size: 0.9em;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-heading {
    color: var(--primary-color);
    font-size: 1.1em;
    margin-bottom: 15px;
    position: relative;
}

.footer-heading::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background-color: var(--accent-color);
    margin-top: 5px;
}

.footer-column p {
    margin-bottom: 10px;
}

.footer-column a {
    color: #fff;
}

.footer-column a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.social-links svg {
    color: #fff;
    width: 20px;
    height: 20px;
}

.footer-nav-list li {
    margin-bottom: 8px;
}

address {
    font-style: normal;
    margin-bottom: 20px;
}

.newsletter-signup {
    margin-top: 20px;
    background-color: rgba(0,0,0,0.2);
    padding: 20px;
    border-radius: 8px;
}

.newsletter-heading {
    color: #fff;
    margin-bottom: 10px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
}

.newsletter-form input[type="email"] {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: #fff;
    color: var(--text-color);
}

.newsletter-form .subscribe-button {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.newsletter-form .subscribe-button:hover {
    background-color: #218838; /* A darker green */
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
}

.copyright {
    margin: 0;
    color: rgba(255,255,255,0.7);
}

.back-to-top {
    margin-left: 15px;
    color: var(--primary-color);
    font-weight: 500;
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: calc(var(--header-height) + 15px); /* Adjust based on actual header height */
        left: 0;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding: 20px 0;
    }

    .nav-menu.is-open {
        display: flex;
    }

    .menu-toggle {
        display: block;
        order: 2; /* To appear after logo */
    }

    .main-nav-container {
        flex-wrap: nowrap;
    }

    .header-main-nav {
        position: relative;
    }

    .nav-menu .menu-item > a {
        padding: 12px 20px;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu .submenu {
        position: static;
        box-shadow: none;
        background-color: var(--light-bg);
        padding: 0;
        border-radius: 0;
        min-width: auto;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu .submenu li a {
        padding-left: 40px;
    }

    .nav-menu .submenu-level-2 li a {
        padding-left: 60px;
    }

    .header-actions {
        order: 3;
        margin-left: auto; /* Push to the right */
    }

    .search-form {
        display: none; /* Hide search bar on small screens, or make it a toggle */
    }
}

@media (max-width: 768px) {
    .header-top-bar .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .utility-links {
        justify-content: center;
        width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-heading::after {
        margin-left: auto;
        margin-right: auto;
    }

    .social-links {
        justify-content: center;
    }

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

    .newsletter-form input, .newsletter-form button {
        width: 100%;
    }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}