refactor: align animate tool with Calculate/Media blueprint

Layout:
- AnimationEditor: lg:grid-cols-5 (2/5 edit, 3/5 visual); full viewport
  height; mobile Edit|Preview glass pill tabs; timeline embedded in edit
  panel on mobile, standalone on desktop; Export|Presets custom tab
  panel at the bottom of the right column

Components (all shadcn removed):
- AnimationSettings: Card/Label/Input/Select/Button → native inputs;
  direction & fill mode as 4-pill selectors; easing as native <select>;
  ∞ iterations as icon pill toggle
- AnimationPreview: Card/ToggleGroup/Button → glass card; speed pills
  as inline glass pill group; element picker as compact icon pills;
  playback controls as glass icon buttons; subtle grid bg on canvas
- KeyframeTimeline: Card/Button → glass card; embedded prop for
  rendering inside another card on mobile without double glass
- KeyframeProperties: Card/Label/Input/Button → bare content section;
  SliderRow uses native number input; bg color toggle as pill button
- ExportPanel: Card/Tabs/Button → bare section; CSS|Tailwind custom
  tab switcher; dark terminal (#06060e) code blocks
- PresetLibrary: Card/Tabs → bare section; category pills replace Tabs;
  preset cards use glass border-border/20 bg-primary/3 styling

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/animate/KeyframeTimeline.tsx

@@ -1,8 +1,6 @@
 'use client';
 
 import { useRef } from 'react';
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import { Button } from '@/components/ui/button';
 import { Plus, Trash2 } from 'lucide-react';
 import { cn } from '@/lib/utils/cn';
 import type { Keyframe } from '@/types/animate';
@@ -14,11 +12,18 @@ interface Props {
   onAdd: (offset: number) => void;
   onDelete: (id: string) => void;
   onMove: (id: string, newOffset: number) => void;
+  embedded?: boolean; // when true, no glass card wrapper (use inside another card)
 }
 
 const TICKS = [0, 25, 50, 75, 100];
 
-export function KeyframeTimeline({ keyframes, selectedId, onSelect, onAdd, onDelete, onMove }: Props) {
+const iconBtn = (disabled?: boolean) =>
+  cn(
+    'w-6 h-6 flex items-center justify-center rounded-md glass border border-border/30 text-muted-foreground hover:text-primary hover:border-primary/30 transition-all',
+    disabled && 'opacity-30 cursor-not-allowed pointer-events-none'
+  );
+
+export function KeyframeTimeline({ keyframes, selectedId, onSelect, onAdd, onDelete, onMove, embedded = false }: Props) {
   const trackRef = useRef<HTMLDivElement>(null);
 
   const getOffsetFromEvent = (clientX: number): number => {
@@ -29,7 +34,6 @@ export function KeyframeTimeline({ keyframes, selectedId, onSelect, onAdd, onDel
   };
 
   const handleTrackClick = (e: React.MouseEvent<HTMLDivElement>) => {
-    // Ignore clicks that land directly on a keyframe marker
     if ((e.target as HTMLElement).closest('[data-keyframe-marker]')) return;
     onAdd(getOffsetFromEvent(e.clientX));
   };
@@ -39,16 +43,11 @@ export function KeyframeTimeline({ keyframes, selectedId, onSelect, onAdd, onDel
     onSelect(id);
     const el = e.currentTarget as HTMLElement;
     el.setPointerCapture(e.pointerId);
-
-    const handleMove = (me: PointerEvent) => {
-      onMove(id, getOffsetFromEvent(me.clientX));
-    };
-
+    const handleMove = (me: PointerEvent) => onMove(id, getOffsetFromEvent(me.clientX));
     const handleUp = () => {
       el.removeEventListener('pointermove', handleMove);
       el.removeEventListener('pointerup', handleUp);
     };
-
     el.addEventListener('pointermove', handleMove);
     el.addEventListener('pointerup', handleUp);
   };
@@ -56,91 +55,91 @@ export function KeyframeTimeline({ keyframes, selectedId, onSelect, onAdd, onDel
   const sorted = [...keyframes].sort((a, b) => a.offset - b.offset);
   const selectedKf = keyframes.find((k) => k.id === selectedId);
 
-  return (
-    <Card>
-      <CardHeader className="flex flex-row items-center justify-between space-y-0">
-        <CardTitle>Keyframes</CardTitle>
+  const content = (
+    <div className="space-y-2">
+      {/* Header */}
+      <div className="flex items-center justify-between">
         <div className="flex items-center gap-2">
-          <span className="text-xs text-muted-foreground">
-            {keyframes.length} keyframe{keyframes.length !== 1 ? 's' : ''}
-            {selectedKf ? ` · selected: ${selectedKf.offset}%` : ''}
+          <span className="text-[10px] font-semibold text-muted-foreground uppercase tracking-widest">
+            Keyframes
           </span>
-          <Button
-            size="icon-xs"
-            variant="outline"
-            onClick={() => onAdd(50)}
-            title="Add keyframe at 50%"
-          >
-            <Plus className="h-3 w-3" />
-          </Button>
-          <Button
-            size="icon-xs"
-            variant="outline"
-            disabled={!selectedId || keyframes.length <= 2}
+          <span className="text-[9px] text-muted-foreground/40 font-mono">
+            {keyframes.length} kf{selectedKf ? ` · ${selectedKf.offset}%` : ''}
+          </span>
+        </div>
+        <div className="flex items-center gap-1">
+          <button onClick={() => onAdd(50)} title="Add at 50%" className={iconBtn()}>
+            <Plus className="w-3 h-3" />
+          </button>
+          <button
             onClick={() => selectedId && onDelete(selectedId)}
-            title="Delete selected keyframe"
+            disabled={!selectedId || keyframes.length <= 2}
+            title="Delete selected"
+            className={iconBtn(!selectedId || keyframes.length <= 2)}
           >
-            <Trash2 className="h-3 w-3" />
-          </Button>
+            <Trash2 className="w-3 h-3" />
+          </button>
         </div>
-      </CardHeader>
-      <CardContent>
-        {/* Track */}
-        <div
-          ref={trackRef}
-          className="relative h-16 bg-muted/30 rounded-lg border border-border cursor-crosshair select-none"
-          onClick={handleTrackClick}
-        >
-          {/* Center line */}
-          <div className="absolute inset-x-0 top-1/2 -translate-y-1/2 h-px bg-border" />
+      </div>
 
-          {/* Tick marks */}
-          {TICKS.map((tick) => (
-            <div
-              key={tick}
-              className="absolute top-0 bottom-0 flex flex-col items-center pointer-events-none"
-              style={{ left: `${tick}%` }}
-            >
-              <div className="w-px h-2 bg-muted-foreground/30 mt-0" />
-              <span className="text-[9px] text-muted-foreground/50 mt-auto mb-1">{tick}%</span>
-            </div>
-          ))}
+      {/* Track */}
+      <div
+        ref={trackRef}
+        className="relative h-14 bg-white/3 rounded-lg border border-border/25 cursor-crosshair select-none"
+        onClick={handleTrackClick}
+      >
+        <div className="absolute inset-x-0 top-1/2 -translate-y-1/2 h-px bg-border/30" />
+        {TICKS.map((tick) => (
+          <div
+            key={tick}
+            className="absolute top-0 bottom-0 flex flex-col items-center pointer-events-none"
+            style={{ left: `${tick}%` }}
+          >
+            <div className="w-px h-2 bg-muted-foreground/20" />
+            <span className="text-[8px] text-muted-foreground/30 mt-auto mb-1 font-mono">{tick}%</span>
+          </div>
+        ))}
+        {sorted.map((kf) => (
+          <button
+            key={kf.id}
+            data-keyframe-marker
+            className={cn(
+              'absolute top-1/2 -translate-y-1/2 -translate-x-1/2 w-3.5 h-3.5 rotate-45 rounded-sm transition-all duration-150 touch-none',
+              kf.id === selectedId
+                ? 'bg-primary shadow-lg shadow-primary/40 scale-125'
+                : 'bg-muted-foreground/40 hover:bg-primary/70'
+            )}
+            style={{ left: `${kf.offset}%` }}
+            onClick={(e) => { e.stopPropagation(); onSelect(kf.id); }}
+            onPointerDown={(e) => handlePointerDown(e, kf.id)}
+            title={`${kf.offset}% — drag to move`}
+          />
+        ))}
+      </div>
 
-          {/* Keyframe markers */}
-          {sorted.map((kf) => (
-            <button
-              key={kf.id}
-              data-keyframe-marker
-              className={cn(
-                'absolute top-1/2 -translate-y-1/2 -translate-x-1/2 w-4 h-4 rotate-45 rounded-sm transition-all duration-150 touch-none',
-                kf.id === selectedId
-                  ? 'bg-primary shadow-lg shadow-primary/40 scale-125'
-                  : 'bg-muted-foreground/60 hover:bg-primary/70'
-              )}
-              style={{ left: `${kf.offset}%` }}
-              onClick={(e) => { e.stopPropagation(); onSelect(kf.id); }}
-              onPointerDown={(e) => handlePointerDown(e, kf.id)}
-              title={`${kf.offset}% — drag to move`}
-            />
-          ))}
-        </div>
+      {/* Offset labels */}
+      <div className="relative h-4">
+        {sorted.map((kf) => (
+          <span
+            key={kf.id}
+            className={cn(
+              'absolute -translate-x-1/2 text-[9px] font-mono transition-colors',
+              kf.id === selectedId ? 'text-primary font-medium' : 'text-muted-foreground/40'
+            )}
+            style={{ left: `${kf.offset}%` }}
+          >
+            {kf.offset}%
+          </span>
+        ))}
+      </div>
+    </div>
+  );
 
-        {/* Offset labels below */}
-        <div className="relative h-5 mt-1">
-          {sorted.map((kf) => (
-            <span
-              key={kf.id}
-              className={cn(
-                'absolute -translate-x-1/2 text-[10px] transition-colors',
-                kf.id === selectedId ? 'text-primary font-medium' : 'text-muted-foreground'
-              )}
-              style={{ left: `${kf.offset}%` }}
-            >
-              {kf.offset}%
-            </span>
-          ))}
-        </div>
-      </CardContent>
-    </Card>
+  if (embedded) return <div>{content}</div>;
+
+  return (
+    <div className="glass rounded-xl px-4 pt-4 pb-3 shrink-0">
+      {content}
+    </div>
   );
 }