feat: improve trainer bio UX — reorder sections, collapsible, scroll arrows, card hover

- Reorder: Groups → Description → Education → Achievements
- Education and Achievements are collapsible (collapsed by default)
- Section headings now gold instead of gray
- Scroll arrows (left/right) replace fade indicators, always visible
- Bigger cards (w-60), wider image thumbnails
- Card hover: gold border glow, brighter text, subtle shadow (user side)
- Admin cards: hover highlight + focus-within gold border for active editing
- Auto-add draft item on blur to prevent data loss

src/app/admin/_components/FormField.tsx

@@ -391,6 +391,7 @@ export function ListField({ label, items, onChange, placeholder }: ListFieldProp
             value={draft}
             onChange={(e) => setDraft(e.target.value)}
             onKeyDown={(e) => { if (e.key === "Enter") { e.preventDefault(); add(); } }}
+            onBlur={add}
             placeholder={placeholder || "Добавить..."}
             className={dashedInput}
           />
@@ -468,7 +469,7 @@ export function VictoryListField({ label, items, onChange, placeholder, onLinkVa
       <label className="block text-sm text-neutral-400 mb-1.5">{label}</label>
       <div className="space-y-2">
         {items.map((item, i) => (
-          <div key={i} className="rounded-lg border border-white/10 bg-neutral-800/50 p-2.5 space-y-1.5">
+          <div key={i} className="rounded-lg border border-white/10 bg-neutral-800/50 p-2.5 space-y-1.5 transition-colors hover:border-gold/30 hover:bg-neutral-800/80 focus-within:border-gold/50 focus-within:bg-neutral-800">
             <div className="flex items-center gap-1.5">
               <input
                 type="text"
@@ -515,6 +516,7 @@ export function VictoryListField({ label, items, onChange, placeholder, onLinkVa
             value={draft}
             onChange={(e) => setDraft(e.target.value)}
             onKeyDown={(e) => { if (e.key === "Enter") { e.preventDefault(); add(); } }}
+            onBlur={add}
             placeholder={placeholder || "Добавить..."}
             className={dashedInput}
           />