Added mindflow_admin.pug template and CSS.

web/assets/css/mindflow_admin.css

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+::placeholder { color: var(--primary-color); }
+
+input[type=text],
+select,
+textarea {
+    background-color: var(--background-color);
+    border: none;
+    border-bottom: 1px solid var(--primary-color);
+    color: var(--text-color);
+    font: inherit; }
+
+form#add {
+    display: grid;
+    gap: .5rem;
+    grid-template-areas:
+		"c n"
+		"t t"
+		"b b"
+		"a a";
+	grid-template-columns: 1fr 1fr;
+    max-width: 100%;
+    min-width: 100%;
+    width: 100%; }
+
+form#add select { grid-area: c; }
+form#add input[name="new-category"] { grid-area: n; }
+form#add input[name="title"] { grid-area: t; }
+form#add textarea[name="body"] { grid-area: b; }
+form#add button[type="submit"] { grid-area: a; }
+
+form.edit {
+    display: grid;
+    gap: .5rem;
+    grid-template-areas:
+		"b b"
+		"e d";
+	grid-template-columns: 1fr 1fr;
+    max-width: 100%;
+    min-width: 100%;
+    width: 100%; }
+
+form.edit textarea { grid-area: b; }
+form.edit input[name="edit"] { grid-area: e; }
+form.edit input[name="delete"] { grid-area: d; }

web/templates/mindflow_admin.pug

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+extends base.pug
+
+block meta_description
+    meta(name='description' content='Here I will post updates on my infrastructure, my very important opinions and thoughts.')
+
+block append head
+    link(href='/assets/css/mindflow.css' rel='stylesheet')
+    link(href='/assets/css/mindflow_admin.css' rel='stylesheet')
+    script(src='/assets/js/mindflow_admin.js' defer='')
+
+block nav
+    a(href='/') Home
+    a(href='/stuff') Stuff
+    a(href='/mindflow') Mindflow
+    a(href='/about') About
+    a(href='/guestbook') Guestbook
+    h1 Mindflow Admin
+
+block content
+    :go:func MindflowAdmin(title string, posts []mindflow.Post, r *http.Request)
+
+    section
+        form(id='add' action='/api/mindflow', method='POST')
+            select(name='category' required='')
+                option(value='1' selected='') Update
+                option(value='2') Diary
+                option(value='0') New category
+            input(type='text', placeholder='New category name' name='new-category')
+            input(type='text', placeholder='Title' name='title' required='')
+            textarea(placeholder='Body post' name='body' required='')
+            button(type="submit") Add 
+    section
+        if (len(posts) > 0)
+            each post in posts
+                article(id=post.PostID())
+                    header
+                        a(href=`#${post.PostID()}`)
+                            h3= post.Category.Name + ": " + post.Title
+                    form.edit
+                        input(type='hidden', name='post_id' value=post.ID)
+                        textarea(placeholder='Body post' name='body' required='')= post.Body
+                        button(name='edit') Edit
+                        button(name='delete') Delete
+                    footer
+                        time(datetime=util.ToClientTimezone(post.Date, r))= util.ToClientTimezone(post.Date, r).Format(time.RFC1123)
+        else
+            p.center Nothing? There must be some... Looks like database went down.