/* 头部容器 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.98));
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    backdrop-filter: blur(10px) saturate(180%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(var(--primary-rgb), 0.08);
}

/* 头部内容区 */
.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* 左侧区域（Logo + 导航） */
.header-left {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center; /* 居中对齐 */
}

/* Logo样式 */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 4px;
    transition: transform 0.3s ease;
    margin-right: 50px;
}

.logo:hover {
    transform: scale(1.02) translateY(-1px);
}

.logo img {
    height: 38px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 2px 4px rgba(var(--primary-rgb), 0.2));
}

/* 导航菜单 */
.nav-menu {
    margin-left: 50px;
}

.nav-menu ul {
    display: flex;
    gap: 40px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
    transition: all 0.3s ease;
    position: relative;
}

/* 图标样式 */
.nav-menu li a i {
    font-size: 20px;
    margin-right: 6px;
    color: #666;
    transition: all 0.3s ease;
}

/* 悬停效果 */
.nav-menu li a:hover {
    color: #045cb7;
}

.nav-menu li a:hover i {
    color: #045cb7;
    transform: translateY(-2px);
}

/* 下划线动画效果 */
.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #045cb7;
    transition: width 0.3s ease;
}

.nav-menu li a:hover::after {
    width: 100%;
}

/* 当前页面激活状态 */
.nav-menu li a.active {
    color: #045cb7;
}

.nav-menu li a.active i {
    color: #045cb7;
}

.nav-menu li a.active::after {
    width: 100%;
}

/* 用户菜单容器 */
.user-menu {
    height: 100%;
    display: flex;
    align-items: center;
    margin-left: 30px; /* 增加左边距，让用户名靠右 */
}

/* 用户下拉菜单容器 */
.user-dropdown {
    height: 100%;
    display: flex;
    align-items: center;
    position: relative;
}

/* 用户信息样式 */
.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    height: 36px;
    color: #333;
}

/* 用户名前的图标样式 */
.user-info i.ri-user-3-line {
    font-size: 18px;
    color: #666;
    margin-right: 4px;
    transition: all 0.3s ease;
}

/* 下拉箭头图标 */
.user-info i.ri-arrow-down-s-line {
    font-size: 18px;
    color: #666;
    transition: transform 0.3s ease;
}

/* 悬停效果 */
.user-info:hover {
    color: #045cb7;
}

.user-info:hover i.ri-user-3-line,
.user-info:hover i.ri-arrow-down-s-line {
    color: #045cb7;
}

/* 下拉菜单悬停时箭头旋转 */
.user-dropdown:hover .user-info i.ri-arrow-down-s-line {
    transform: rotate(180deg);
}

/* 下拉菜单样式优化 */
.user-dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 140px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    padding: 6px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

/* 下拉菜单显示动画 */
.user-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 下拉菜单项样式 */
.dropdown-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.dropdown-item i {
    margin-right: 8px;
    font-size: 16px;
    color: #666;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: rgba(var(--primary-rgb), 0.05);
    color: var(--primary-color);
}

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

/* 分割线样式 */
.dropdown-divider {
    margin: 4px 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.06);
}

/* 退出登录按钮样式 */
.logout-btn {
    color: #dc2626 !important;
}

.logout-btn:hover {
    background: rgba(220, 38, 38, 0.05) !important;
}

.logout-btn i {
    color: #dc2626 !important;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .user-menu {
        margin-left: 15px;
    }
    
    .user-info {
        padding: 6px 10px;
    }
    
    .username {
        font-size: 14px;
    }
    
    .dropdown-item {
        padding: 10px 16px;
    }
}

/* 未登录状态的菜单 */
.guest-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.user-menu .btn {
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    min-width: 80px;
    text-align: center;
}

.btn-login {
    color: var(--text-color);
    background: transparent;
    border: 2px solid transparent;
    box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.1);
}

.btn-login:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.15);
}

.btn-register {
    color: #fff;
    background: linear-gradient(135deg, #057ade, #0461b1);
    background-size: 200% auto;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.25);
    border: none;
}

.btn-register:hover {
    background-position: right center;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--primary-rgb), 0.3);
}

/* 按钮点击波纹效果 */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active::after {
    width: 200px;
    height: 200px;
    opacity: 0;
}

/* 隐藏头像 */
.user-info .user-avatar {
    display: none;
}

/* 响应式设计优化 */
@media (max-width: 1200px) {
    .header-content {
        padding: 15px 30px;
    }
}

@media (max-width: 1024px) {
    .header-content {
        padding: 12px 20px;
    }

    .logo {
        margin-right: 35px;
    }

    .nav-menu {
        gap: 25px;
    }

    .nav-link {
        font-size: 15px;
        padding: 8px 10px;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 10px 15px;
    }

    .header-left {
        justify-content: flex-start;
    }

    .logo {
        margin-right: 25px;
    }

    .logo img {
        height: 32px;
        max-width: 120px;
    }

    .nav-menu {
        gap: 15px;
    }

    .nav-link {
        padding: 8px 6px;
    }

    .user-menu .btn {
        padding: 6px 15px;
        font-size: 14px;
    }

    .user-info {
        padding: 6px 12px;
        height: 36px;
    }
    
    .username {
        font-size: 14px;
    }
}

/* 移动端样式 */
@media (max-width: 640px) {
    .header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

    .header-content {
        padding: 10px 15px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: relative;
        height: 60px;
    }

    /* 隐藏默认导航和用户菜单 */
    .header-content > .nav-menu,
    .header-content > .user-menu {
        display: none !important;
    }

    /* 菜单按钮样式 */
    .menu-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        padding: 8px;
        border: none;
        background: transparent;
        border-radius: 8px;
        cursor: pointer;
        color: var(--text-color);
        font-size: 24px;
        position: relative;
        z-index: 1002;
        transition: all 0.3s ease;
    }

    .menu-toggle:hover {
        background: rgba(var(--primary-rgb), 0.1);
    }

    .menu-toggle.active {
        color: var(--primary-color);
    }

    /* 菜单容器样式 */
    .menu-container {
        position: fixed;
        top: 60px;
        right: 0;
        width: 80%;
        max-width: 320px;
        height: calc(100vh - 60px);
        background: #fff;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        overflow-y: auto;
        z-index: 1001;
        padding: 20px;
        display: block !important;
    }

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

    /* 导航菜单样式 */
    .menu-container .nav-menu {
        display: flex !important;
        flex-direction: column;
        gap: 10px;
        margin-bottom: 20px;
    }

    .menu-container .nav-item {
        width: 100%;
    }

    .menu-container .nav-link {
        display: flex;
        align-items: center;
        padding: 12px 15px;
        font-size: 16px;
        color: var(--text-color);
        border-radius: 8px;
        transition: all 0.3s ease;
    }

    .menu-container .nav-link i {
        margin-right: 10px;
        font-size: 20px;
    }

    .menu-container .nav-link:hover,
    .menu-container .nav-link.active {
        background: rgba(var(--primary-rgb), 0.1);
        color: var(--primary-color);
    }

    /* 用户菜单样式 */
    .menu-container .user-menu {
        display: block !important;
        padding-top: 20px;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }

    .menu-container .guest-menu {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .menu-container .btn {
        width: 100%;
        text-align: center;
    }

    /* 遮罩层 */
    .header::after {
        content: '';
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }

    .header.menu-open::after {
        opacity: 1;
        visibility: visible;
    }
}

/* 桌面端样式 */
@media (min-width: 641px) {
    .menu-toggle {
        display: none;
    }

    .menu-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex: 1;
    }
}

/* 平板竖屏 */
@media (min-width: 641px) and (max-width: 768px) {
    .header-content {
        padding: 12px 20px;
    }

    .nav-menu {
        gap: 20px;
    }
}

/* 平板横屏 */
@media (min-width: 769px) and (max-width: 1024px) {
    .header-content {
        padding: 15px 30px;
    }

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

/* 动画效果 */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header.scroll-down {
    transform: translateY(-100%);
}

.header.scroll-up {
    transform: translateY(0);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

/* 添加Logo动画 */
@keyframes logoGlow {
    0% {
        filter: drop-shadow(0 2px 4px rgba(var(--primary-rgb), 0.2));
        transform: scale(1);
    }
    50% {
        filter: drop-shadow(0 4px 12px rgba(var(--primary-rgb), 0.4));
        transform: scale(1.02);
    }
    100% {
        filter: drop-shadow(0 2px 4px rgba(var(--primary-rgb), 0.2));
        transform: scale(1);
    }
}

.logo:hover img {
    animation: logoGlow 1.5s infinite;
}

/* 移动端菜单按钮样式 */
.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    cursor: pointer;
    padding: 8px;
    position: relative;
    z-index: 1002;
}

.mobile-menu-btn i {
    font-size: 24px;
    color: #1e293b;
    transition: all 0.3s ease;
}

/* 移动端菜单遮罩层 - 完全移除 */
.mobile-menu::before {
    display: none; /* 完全移除遮罩层 */
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 60px;
    right: -100%;
    width: 75%;
    max-width: 300px;
    height: calc(100vh - 60px);
    background: #fff;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    padding: 0;
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .header {
        position: fixed;
        width: 100%;
        top: 0;
        left: 0;
        z-index: 1000;
    }

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

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1003;
    }

    .nav-menu,
    .user-menu {
        display: none !important;
    }
}

/* 桌面端隐藏移动端元素 */
@media screen and (min-width: 769px) {
    .mobile-menu,
    .mobile-menu-btn,
    .mobile-user-menu {
        display: none !important;
    }
}

/* 动画优化 */
.mobile-menu {
    transition: transform 0.3s ease, right 0.3s ease;
}

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

/* 移动端按钮动画 */
.mobile-menu-btn i {
    transition: transform 0.3s ease;
}

.mobile-menu.active + .mobile-menu-btn i {
    transform: rotate(90deg);
}

/* 移动端用户菜单样式 */
.mobile-user-menu {
    padding: 20px 24px;
    border-top: 1px solid #f1f5f9;
    margin-top: 0;
    position: relative;
    z-index: 1002;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 移动端登录注册按钮样式 */
.mobile-user-menu .btn {
    width: 100%;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s ease;
}

.mobile-user-menu .btn-login {
    background: #fff;
    color: #3b82f6;
    border: 1px solid #3b82f6;
}

.mobile-user-menu .btn-login:hover {
    background: #f0f7ff;
    transform: translateY(-1px);
}

.mobile-user-menu .btn-register {
    background: #3b82f6;
    color: #fff;
    border: none;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.mobile-user-menu .btn-register:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.2);
}

/* 移动端导航菜单 */
.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 16px 0;
}

.mobile-nav .nav-link {
    padding: 16px 24px;
    color: #1e293b;
    text-decoration: none;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    border-bottom: 1px solid #f1f5f9;
    position: relative;
    z-index: 1002;
}

.mobile-nav .nav-link:hover {
    background: #f8fafc;
    color: #3b82f6;
    padding-left: 28px;
}

.mobile-nav .nav-link i {
    font-size: 18px;
    color: #64748b;
    transition: all 0.2s ease;
}

.mobile-nav .nav-link:hover i {
    color: #3b82f6;
    transform: translateX(2px);
}

/* 导航菜单样式 */
.nav-menu ul {
    display: flex;
    gap: 30px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    color: #1e293b;
    text-decoration: none;
    font-size: 15px;
    transition: all 0.3s ease;
}

.nav-menu li a i {
    font-size: 18px;
    margin-right: 8px;
    color: #64748b;
    transition: all 0.3s ease;
}

.nav-menu li a:hover {
    color: #045cb7;
}

.nav-menu li a:hover i {
    color: #045cb7;
    transform: translateY(-1px);
}

/* 响应式布局优化 */
@media (min-width: 1200px) {
    .header-content {
        padding: 15px 30px;
    }
    .mobile-menu,
    .mobile-menu-btn {
        display: none !important;
    }
    .nav-menu {
        display: flex !important;
    }
    .nav-menu ul {
        gap: 30px;
    }
}

/* 大中屏幕 (992px-1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .header-content {
        padding: 12px 20px;
    }
    .mobile-menu,
    .mobile-menu-btn {
        display: none !important;
    }
    .nav-menu {
        display: flex !important;
    }
    .nav-menu ul {
        gap: 20px;
    }
}

/* 平板及以下 (<992px) */
@media (max-width: 991px) {
    .header-content {
        padding: 10px 15px;
    }
    .nav-menu {
        display: none !important;
    }
    .mobile-menu-btn {
        display: flex !important;
    }
    .mobile-menu {
        display: block;
        width: 300px;
    }
    .user-menu .guest-menu {
        display: none !important;
    }
}

/* 中小屏幕 (<768px) */
@media (max-width: 767px) {
    .header-content {
        padding: 8px 15px;
    }
    .logo img {
        height: 32px;
    }
    .mobile-menu {
        width: 280px;
    }
    .user-menu .guest-menu {
        display: none !important;
    }
}

/* 小屏幕 (<576px) */
@media (max-width: 575px) {
    .mobile-menu {
        width: 100%;
    }
    .logo img {
        height: 28px;
    }
}

/* 移动端菜单基础样式 */
.mobile-menu {
    position: fixed;
    top: 60px;
    right: -100%;
    height: calc(100vh - 60px);
    background: #fff;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    padding: 20px 0;
}

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

/* 移动端导航样式 */
.mobile-nav {
    padding: 0;
}

.mobile-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    color: #1e293b;
    text-decoration: none;
    font-size: 15px;
    border-bottom: 1px solid #f1f5f9;
    transition: all 0.3s ease;
}

.mobile-nav .nav-link i {
    margin-right: 12px;
    font-size: 20px;
    color: #64748b;
    transition: all 0.3s ease;
}

.mobile-nav .nav-link:hover {
    background: #f8fafc;
    color: #045cb7;
    padding-left: 30px;
}

.mobile-nav .nav-link:hover i {
    color: #045cb7;
}

/* 移动端菜单按钮样式 */
.mobile-menu-btn {
    width: 40px;
    height: 40px;
    padding: 8px;
    border: none;
    background: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    margin-left: 15px;
}

.mobile-menu-btn i {
    font-size: 24px;
    color: #1e293b;
    transition: all 0.3s ease;
}

/* 确保在所有视图下导航菜单正确显示 */
.nav-menu {
    margin: 0;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* 修复用户菜单在各种尺寸下的显示 */
.user-menu {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.guest-menu {
    display: flex;
    gap: 10px;
}

/* 优化header布局 */
.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.header-left {
    display: flex;
    align-items: center;
}

/* 下拉菜单项样式优化 */
.dropdown-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.dropdown-item i {
    margin-right: 8px;
    font-size: 16px;
    color: var(--text-light);
}

.dropdown-item:hover {
    background: rgba(var(--primary-rgb), 0.05);
    color: var(--primary-color);
}

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

/* 确保下拉菜单动画平滑 */
.user-dropdown .dropdown-menu {
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.user-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

/* 移动端适配优化 */
@media (max-width: 768px) {
    .mobile-nav .nav-link {
        padding: 12px 20px;
    }
    
    .dropdown-item {
        padding: 12px 20px;
    }
}