/* Header Styles - Modern and Responsive */
/* Reset default browser styling */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Main header container */
.site-header {
    width: 100%;
    min-height: 64px;
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

/* Header hover effect */
.site-header:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Inner container with specified margins */
.site-branding {
    padding: 12px 32px !important;
    margin: 0 !important;
    display: flex;
    align-items: center;
    overflow: visible;
}

/* Logo styling with fixed dimensions */
.site-branding .custom-logo {
    width: 40px !important;
    height: 40px !important;
    object-fit: contain;
    display: block;
    margin: 0;
    max-width: none !important;
    max-height: none !important;
    transition: transform 0.3s ease;
}

/* Logo hover effect */
.site-branding .custom-logo:hover {
    transform: scale(1.05);
}

/* Site title styling */
.site-branding .site-title {
    margin: 0 0 0 16px !important;
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    line-height: 1.2;
}

.site-branding .site-title a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.site-branding .site-title a:hover {
    color: #3498db;
}

/* Navigation styling */
#site-navigation {
    margin: 0;
    padding: 0 32px;
}

/* Menu toggle button */
.menu-toggle {
    display: none;
    background-color: transparent;
    border: none;
    color: #2c3e50;
    font-size: 1rem;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background-color: #f8f9fa;
    color: #3498db;
}

/* Primary menu styling */
#primary-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

#primary-menu li {
    margin: 0 8px;
    position: relative;
}

#primary-menu a {
    display: block;
    padding: 12px 16px;
    color: #2c3e50;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
}

#primary-menu a:hover, #primary-menu a:focus {
    background-color: #f8f9fa;
    color: #191919;
    transform: translateY(-2px);
}

/* Submenu styling */
#primary-menu ul {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    list-style: none;
    margin: 0;
    padding: 8px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1001;
}

#primary-menu li:hover > ul {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#primary-menu ul li {
    margin: 0;
    width: 100%;
}

#primary-menu ul a {
    padding: 10px 16px;
    border-radius: 0;
}

#primary-menu ul a:hover {
    background-color: #f8f9fa;
    color: #3498db;
}

/* Responsive design */
@media (max-width: 1024px) {
    .site-branding {
        padding: 12px 24px !important;
    }
    
    #site-navigation {
        padding: 0 24px;
    }
    
    .site-branding .site-title {
        font-size: 1.35rem;
    }
}

@media (max-width: 768px) {
    .site-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        min-height: 64px;
        padding: 0 !important;
    }
    
    /* 保持移动端logo位置与PC端一致 */
    .site-branding {
        justify-content: flex-start;
        padding: 12px 20px !important;
        margin: 0 !important;
    }
    
    .site-branding .site-title {
        font-size: 1.25rem;
    }
    
    #site-navigation {
        padding: 0 20px;
        position: relative;
    }
    
    /* 改进移动端菜单按钮 - 仅显示三条横图标 */
    .menu-toggle {
        display: block;
        padding: 8px;
        background-color: transparent;
        color: #000000;
        border: none;
        border-radius: 0;
        font-size: 1.2rem;
        cursor: pointer;
        transition: none;
        width: 40px;
        height: 40px;
        text-align: center;
        line-height: 1;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .menu-toggle:hover,
    .menu-toggle:focus,
    .menu-toggle:active {
        background-color: transparent;
        color: #000000;
        transform: none;
        outline: none;
    }
    
    .menu-toggle.toggled-on,
    .menu-toggle.toggled-on:active {
        background-color: transparent;
        color: #000000;
    }
    
    /* 确保没有点击状态的背景色 */
    .menu-toggle {
        -webkit-tap-highlight-color: transparent;
        tap-highlight-color: transparent;
    }
    
    /* 移动端全屏右侧滑入菜单样式 - 左右居中且垂直居中 */
    #primary-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: white;
        border-radius: 0;
        box-shadow: -8px 0 24px rgba(0, 0, 0, 0.15);
        flex-direction: column;
        display: flex;
        justify-content: center;
        align-items: center;
        z-index: 998;
        margin: 0;
        overflow-y: auto;
        transition: right 0.3s ease;
        padding: 20px;
    }
    
    #primary-menu.toggled-on {
    right: 0;
}

/* 默认隐藏菜单logo */
.mobile-menu-logo {
    display: none;
}

/* 只在移动端下显示菜单logo */
@media (max-width: 768px) {
    #primary-menu.toggled-on .mobile-menu-logo {
        display: block;
    }
}
    
    /* 菜单背景遮罩 */
    .site-header::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease;
        z-index: 997;
    }
    
    .site-header.has-open-menu::before {
        opacity: 1;
        visibility: visible;
    }
    
    #primary-menu li {
        margin: 2px 0;
        width: auto;
        text-align: center;
    }
    
    #primary-menu a {
        padding: 8px 32px;
        border-bottom: none;
        font-size: 1.2rem;
        color: #333;
        transition: all 0.2s ease;
        text-decoration: none;
    }
    
    #primary-menu a:hover,
    #primary-menu a:focus {
        background-color: transparent;
        color: #3498db;
        transform: none;
        padding-left: 32px;
    }
    
    #primary-menu li:last-child a {
        border-bottom: none;
    }
    
    /* 移动端子菜单样式 */
    #primary-menu ul {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        background-color: #f8f9fa;
        padding: 0;
    }
    
    #primary-menu li:hover > ul {
        display: block;
    }
    
    #primary-menu ul a {
        padding-left: 32px;
        border-bottom: 1px solid #e9ecef;
    }
    
    #primary-menu ul a:hover {
        padding-left: 36px;
    }
}

@media (max-width: 480px) {
    .site-branding {
        padding: 10px 16px !important;
    }
    
    #site-navigation {
        padding: 0 16px;
    }
    
    .site-branding .custom-logo {
        width: 36px !important;
        height: 36px !important;
    }
    
    .site-branding .site-title {
        font-size: 1.1rem;
        margin-left: 12px !important;
    }
    
    /* 小屏幕保持满屏居中菜单 */
    #primary-menu {
        width: 100%;
        right: -100%;
        justify-content: center;
        align-items: center;
    }
    
    .menu-toggle {
         padding: 6px;
         font-size: 1.1rem;
         width: 36px;
         height: 36px;
         background-color: transparent;
         color: #000000;
         border: none;
         border-radius: 0;
         transition: none;
     }
}