/* 登录注册按钮样式 */
.top-nav-actions .login-btn,
.top-nav-actions .register-btn {
    width: auto;
    height: auto;
    border-radius: 20px;
    background-color: transparent;
    box-shadow: none;
}

.top-nav-actions .login-btn a,
.top-nav-actions .register-btn a {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.top-nav-actions .login-btn a {
    color: var(--text-color-primary);
    background-color: transparent;
    border: 1px solid var(--border-color-primary);
    margin-right: 8px;
}

.top-nav-actions .login-btn a:hover {
    background-color: var(--bg-color-secondary);
}

.top-nav-actions .register-btn a {
    color: white;
    background-color: var(--primary-color);
}

.top-nav-actions .register-btn a:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-1px);
}

/* 用户头像样式 */
.top-nav-actions .user-avatar {
    position: relative;
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--bg-color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-nav-actions .user-avatar img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color-primary);
    transition: all 0.3s ease;
}

.top-nav-actions .user-avatar:hover img {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

/* 用户下拉菜单 */
.top-nav-actions .user-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    width: 160px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.top-nav-actions .user-avatar:hover .user-menu,
.top-nav-actions .user-avatar.active .user-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.top-nav-actions .user-menu ul {
    list-style: none;
    margin: 0;
    padding: 8px 0;
}

.top-nav-actions .user-menu li {
    margin: 0;
    padding: 0;
}

.top-nav-actions .user-menu a {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--text-color-primary);
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.top-nav-actions .user-menu a:hover {
    background-color: var(--bg-color-secondary);
}

.top-nav-actions .user-menu .divider {
    height: 1px;
    background-color: var(--border-color-primary);
    margin: 8px 0;
}

.top-nav-actions .user-menu .logout-btn {
    color: #ff4d4f;
}

.top-nav-actions .user-menu .logout-btn:hover {
    background-color: rgba(255, 77, 79, 0.1);
}

/* 搜索框样式 */
.top-nav-search {
    position: relative;
    max-width: 500px;
    width: 100%;
}

.top-nav-search form {
    width: 100%;
}

.top-nav-search input:focus {
    box-shadow: 0 0 0 2px var(--primary-color);
}

.top-nav-search button:hover {
    color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .top-nav-actions .login-btn a,
    .top-nav-actions .register-btn a {
        padding: 4px 8px;
        font-size: 12px;
    }
    
    .top-nav-actions .user-avatar img {
        width: 28px;
        height: 28px;
    }

    .top-nav-search {
        max-width: none;
    }
}