diff --git a/.claude/context/stylesheet.md b/.claude/context/stylesheet.md
new file mode 100644
index 0000000..2eb589b
--- /dev/null
+++ b/.claude/context/stylesheet.md
@@ -0,0 +1,359 @@
+# UMBRA Design System & Stylesheet
+
+> This document defines the visual language for every page in UMBRA.
+> All frontend work MUST conform to these patterns. Do not invent new colors, spacing scales, or component styles.
+
+---
+
+## Visual Reference
+
+The dashboard establishes the canonical look: a near-black canvas with thin-bordered cards, cyan accent highlights, the Sora/DM Sans type pairing, and subtle glow effects on interactive elements. Every page should feel like a natural extension of this dashboard.
+
+**Key visual characteristics:**
+- Ultra-dark background (~#0a0a0a) with very subtle card elevation (#0d0d0d cards)
+- Thin 1px borders in dark gray (#262626) - never heavy or prominent
+- Accent color (default cyan) used sparingly: active nav, stat icons, today highlights, hover glows
+- High-contrast white text on dark, with muted gray (#a3a3a3) for secondary content
+- Cards have a gentle hover glow (`shadow-accent/5`) - not dramatic, just a hint of life
+- Clean data-dense layouts with compact spacing - no wasted space
+- Type badges and priority pills use color-coded backgrounds at 10% opacity (e.g. `bg-blue-500/10 text-blue-400`)
+
+---
+
+## 1. Color Tokens (CSS Custom Properties)
+
+All colors use HSL format via CSS variables. Never hardcode hex values.
+
+### Surface Colors
+| Token | HSL | Approx Hex | Usage |
+|---|---|---|---|
+| `--background` | `0 0% 3.9%` | `#0a0a0a` | Page background |
+| `--card` | `0 0% 5%` | `#0d0d0d` | Card/panel surfaces |
+| `--card-elevated` | `0 0% 7%` | `#121212` | Hover states, elevated surfaces |
+| `--secondary` | `0 0% 10%` | `#1a1a1a` | Secondary backgrounds, muted surfaces |
+| `--muted` | `0 0% 10%` | `#1a1a1a` | Disabled/muted backgrounds |
+
+### Text Colors
+| Token | HSL | Approx Hex | Usage |
+|---|---|---|---|
+| `--foreground` | `0 0% 98%` | `#fafafa` | Primary text |
+| `--muted-foreground` | `0 0% 63.9%` | `#a3a3a3` | Secondary/subtle text |
+
+### Border & Input
+| Token | HSL | Approx Hex | Usage |
+|---|---|---|---|
+| `--border` | `0 0% 14.9%` | `#262626` | All borders, dividers |
+| `--input` | `0 0% 14.9%` | `#262626` | Input borders |
+
+### Semantic Colors
+| Token | HSL | Usage |
+|---|---|---|
+| `--destructive` | `0 62.8% 30.6%` | Delete actions, errors |
+| `--primary` / `--accent-color` / `--ring` | Dynamic (accent HSL) | Primary actions, focus rings |
+
+### Accent System (Dynamic)
+
+The accent is composed of three root variables set at runtime by `useTheme`:
+- `--accent-h` (hue)
+- `--accent-s` (saturation)
+- `--accent-l` (lightness)
+
+These feed into `--primary`, `--ring`, and `--accent-color`.
+
+**Presets:**
+| Name | H | S | L | Approx Color |
+|---|---|---|---|---|
+| `cyan` (default) | 187 | 85.7% | 53.3% | Teal-cyan |
+| `blue` | 217 | 91.2% | 59.8% | Bright blue |
+| `purple` | 258 | 89.5% | 66.3% | Violet |
+| `orange` | 21 | 94.6% | 53.3% | Warm orange |
+| `green` | 142 | 70.6% | 45.3% | Emerald |
+
+### Semantic Color Assignments (Fixed per feature)
+
+These are NOT theme-dependent. They provide visual consistency for item types:
+
+| Feature | Text | Background | Usage |
+|---|---|---|---|
+| Todos | `text-blue-400` | `bg-blue-500/10` | Todo badges, type indicators |
+| Events | `text-purple-400` | `bg-purple-500/10` | Event badges, calendar items |
+| Reminders | `text-orange-400` | `bg-orange-500/10` | Reminder badges |
+| Projects | `text-blue-400` | `bg-blue-500/10` | Project counts |
+| In Progress | `text-purple-400` | `bg-purple-500/10` | Status indicators |
+| Open Todos | `text-teal-400` | `bg-teal-500/10` | Stat cards |
+| Weather | `text-amber-400` | `bg-amber-500/10` | Weather widget |
+| High priority | `text-red-400` | `bg-red-500/10` | Priority pills |
+| Medium priority | `text-yellow-400` | `bg-yellow-500/10` | Priority pills |
+| Low priority | `text-green-400` | `bg-green-500/10` | Priority pills |
+
+---
+
+## 2. Typography
+
+### Font Families
+- **Headings:** `Sora` (`font-heading`) — all h1-h6, card titles, stat values, logo
+- **Body:** `DM Sans` (`font-body`) — everything else
+
+### Type Scale (as used)
+| Class | Usage |
+|---|---|
+| `text-[9px]` | Micro labels (priority badges, type tags) |
+| `text-[10px] tracking-wider uppercase` | Stat labels |
+| `text-[11px]` | Small metadata |
+| `text-xs` | Timestamps, secondary metadata |
+| `text-sm` | Body text, list items, form inputs, nav items |
+| `text-lg font-semibold` | Card titles (with `font-heading`) |
+| `text-xl font-bold tabular-nums` | Stat values (with `font-heading`) |
+| `text-3xl font-bold tracking-tight` | Page greeting/hero (with `font-heading`) |
+
+### Font Rendering
+```css
+font-feature-settings: "rlig" 1, "calt" 1;
+-webkit-font-smoothing: antialiased;
+```
+
+---
+
+## 3. Spacing & Layout
+
+### Border Radius
+| Token | Value | Usage |
+|---|---|---|
+| `rounded-lg` | `0.5rem` (8px) | Cards, panels |
+| `rounded-md` | `~6px` | Buttons, inputs |
+| `rounded-sm` | `~4px` | Small elements |
+| `rounded-full` | Pill | Badges, dots, icon containers |
+
+### Page Layout
+```
+App Shell: flex h-screen overflow-hidden bg-background
+├── Sidebar: w-64 (expanded) / w-16 (collapsed), border-r, bg-card
+│   transition-all duration-300
+└── Content: flex-1 flex flex-col overflow-hidden
+    ├── MobileHeader: md:hidden, h-14, border-b, bg-card
+    └── <main>: flex-1 overflow-y-auto
+        └── Page content: px-6 py-6
+```
+
+### Grid Patterns
+| Pattern | Classes | Usage |
+|---|---|---|
+| Stat row | `grid gap-2.5 grid-cols-2 lg:grid-cols-4` | Dashboard stats |
+| Main + sidebar | `grid gap-5 lg:grid-cols-5` → `lg:col-span-3` + `lg:col-span-2` | Dashboard layout |
+| Card grid | `grid gap-4 md:grid-cols-2 lg:grid-cols-3` | List pages (people, locations, projects) |
+
+### Standard Spacing
+- Page padding: `px-6 py-6`
+- Card padding: `p-5` (header), `p-5 pt-0` (content/footer)
+- Card gap in grid: `gap-4` to `gap-5`
+- List row padding: `py-1.5 px-2`
+- Section gap: `space-y-4` to `space-y-6`
+
+---
+
+## 4. Component Patterns
+
+### Card
+```
+Base:     rounded-lg border bg-card text-card-foreground shadow-sm
+Hover:    hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20
+Motion:   transition-all duration-200
+Header:   flex flex-col space-y-1.5 p-5
+Title:    font-heading text-lg font-semibold leading-none tracking-tight
+Content:  p-5 pt-0
+Footer:   flex items-center p-5 pt-0
+```
+
+### Button (CVA variants)
+```
+Base:     inline-flex items-center justify-center gap-2 rounded-md text-sm font-medium
+          transition-colors focus-visible:ring-2 focus-visible:ring-ring
+Variants:
+  default:     bg-accent text-accent-foreground hover:bg-accent/90
+  destructive: bg-destructive text-destructive-foreground hover:bg-destructive/90
+  outline:     border border-input bg-background hover:bg-accent/10 hover:text-accent
+  secondary:   bg-secondary text-secondary-foreground hover:bg-secondary/80
+  ghost:       hover:bg-accent/10 hover:text-accent
+  link:        text-accent underline-offset-4 hover:underline
+Sizes:
+  default: h-10 px-4 py-2
+  sm:      h-9 px-3
+  lg:      h-11 px-8
+  icon:    h-10 w-10
+```
+
+### Badge
+```
+Base:     inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold
+Variants:
+  default:     border-transparent bg-accent text-accent-foreground
+  secondary:   border-transparent bg-secondary text-secondary-foreground
+  destructive: border-transparent bg-destructive text-destructive-foreground
+  outline:     text-foreground
+```
+
+### Input / Select / Textarea
+```
+h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm
+placeholder:text-muted-foreground
+focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2
+disabled:cursor-not-allowed disabled:opacity-50
+```
+
+### Dialog
+```
+Overlay:  fixed inset-0 bg-background/80 backdrop-blur-sm
+Content:  border bg-card p-6 shadow-lg rounded-lg max-w-xl
+Header:   flex flex-col space-y-1.5
+Title:    text-lg font-semibold leading-none tracking-tight
+Footer:   flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2
+Close:    absolute right-4 top-4, X icon h-4 w-4
+```
+
+### Empty State
+```
+Container: flex flex-col items-center justify-center py-16 px-4
+Icon:      rounded-full bg-muted p-4 mb-4, icon h-8 w-8 text-muted-foreground
+Title:     text-lg font-semibold mb-1
+Desc:      text-sm text-muted-foreground text-center max-w-sm mb-4
+Action:    <Button> with Plus icon
+```
+
+### Skeleton
+```
+Base: animate-pulse rounded-md bg-muted
+```
+
+---
+
+## 5. Widget & Data Patterns
+
+### Stat Card
+```
+Container: Card with bg-gradient-to-br from-accent/[0.03] to-transparent
+Icon:      p-1.5 rounded-md bg-{color}/10
+Label:     text-[10px] tracking-wider uppercase text-muted-foreground
+Value:     font-heading text-xl font-bold tabular-nums
+```
+
+### List Row (full-page lists: todos, reminders, etc.)
+```
+Container:  space-y-0.5 (tight stacking, no card borders)
+Row:        flex items-center gap-3 px-3 py-2 rounded-md
+            hover:bg-card-elevated transition-colors duration-150
+Layout:     Everything on ONE line. Left-to-right:
+            [interactive control] [title truncate flex-1] [pills/badges] [metadata] [actions]
+Title:      text-sm font-medium truncate flex-1 min-w-0
+Metadata:   text-[11px] shrink-0, right-aligned before actions
+Actions:    ghost icon buttons h-7 w-7, last in row
+```
+
+**List view vs card view:** If a page shows items as a *list* (todos, upcoming),
+use single-line rows with `hover:bg-card-elevated` — no borders, no shadow,
+no multi-line content. If a page shows items as a *grid of cards* (projects,
+people, locations), use the Card component with `p-5`, multi-line content, and
+`hover:shadow-lg hover:shadow-accent/5`.
+
+### Widget List Row (dashboard widgets — more compact)
+```
+flex items-center gap-2 py-1.5 px-2 rounded-md
+hover:bg-card-elevated transition-colors duration-150
+```
+
+### Section Header (widget title)
+```
+Icon wrapped in p-1.5 rounded-md bg-{color}/10
+alongside CardTitle
+"View all" or count label: text-xs text-muted-foreground
+```
+
+### Priority Pills
+```
+text-[9px] px-1.5 py-0.5 rounded-full font-medium
+High:   bg-red-500/20 text-red-400
+Medium: bg-yellow-500/20 text-yellow-400
+Low:    bg-green-500/20 text-green-400
+```
+
+### Type Tags
+```
+text-[9px] px-1.5 py-0.5 rounded font-medium uppercase tracking-wide
+Todo:     bg-blue-500/15 text-blue-400
+Event:    bg-purple-500/15 text-purple-400
+Reminder: bg-orange-500/15 text-orange-400
+```
+
+### Week Timeline (today highlight)
+```
+bg-accent/10 border border-accent/30 rounded-lg
+shadow-[0_0_12px_hsl(var(--accent-color)/0.15)]
+```
+
+---
+
+## 6. Navigation
+
+### Sidebar Nav Link
+```
+Base:     flex items-center gap-3 rounded-lg px-3 py-2 text-sm font-medium
+          transition-all duration-200 border-l-2
+Active:   bg-accent/15 text-accent border-accent
+Inactive: text-muted-foreground hover:bg-accent/10 hover:text-accent border-transparent
+Icon:     h-5 w-5 shrink-0
+```
+
+### Logo
+```
+font-heading text-xl font-bold tracking-tight text-accent
+```
+
+### Logout
+```
+hover:bg-destructive/10 hover:text-destructive
+```
+
+---
+
+## 7. Animations & Transitions
+
+### Keyframes
+| Name | Effect | Duration | Easing |
+|---|---|---|---|
+| `fade-in` | opacity 0 → 1 | 300ms | ease-out |
+| `slide-up` | opacity 0→1 + Y(8px→0) | 400ms | ease-out |
+
+### Staggered Entry (dashboard sections)
+```
+animationDelay: '50ms' / '100ms' / '150ms'
+animationFillMode: 'backwards'
+```
+
+### Standard Transitions
+| Usage | Classes |
+|---|---|
+| Interactive elements | `transition-all duration-200` |
+| Color changes | `transition-colors duration-150` |
+| Sidebar collapse | `transition-all duration-300` |
+
+---
+
+## 8. Scrollbar
+```css
+scrollbar-width: thin;
+scrollbar-color: hsl(0 0% 20%) transparent;  /* #333 thumb on transparent */
+::-webkit-scrollbar { width: 6px; height: 6px; }
+::-webkit-scrollbar-thumb:hover { background: hsl(var(--accent-color) / 0.5); }
+```
+
+---
+
+## 9. Design Principles
+
+1. **Dark-first:** Everything is designed for the dark palette. There is no light mode.
+2. **Accent as highlight, not flood:** The accent color draws attention to interactive/important elements. It should never dominate a section.
+3. **10% opacity backgrounds:** Feature colors (blue, purple, orange, etc.) are always at 10-20% opacity for backgrounds, with 400-level text on top. Never use full-saturation backgrounds.
+4. **Data density:** Compact rows, small text for metadata, efficient use of space. This is a productivity tool, not a marketing page.
+5. **Consistent card pattern:** Every distinct content section is a Card. Cards have uniform padding (p-5), title styling, and hover behavior.
+6. **Typography hierarchy:** Sora for headings/numbers, DM Sans for body. This distinction creates visual rhythm without extra decoration.
+7. **Subtle motion:** Hover glows, fade-ins, and slide-ups. No bouncing, spinning, or attention-grabbing animations.
+8. **Icon consistency:** All icons from Lucide React, sized at `h-5 w-5` for nav/actions, `h-4 w-4` for inline, `h-8 w-8` for empty states.
diff --git a/frontend/src/components/todos/TodoItem.tsx b/frontend/src/components/todos/TodoItem.tsx
index 51d3ec8..b65ae34 100644
--- a/frontend/src/components/todos/TodoItem.tsx
+++ b/frontend/src/components/todos/TodoItem.tsx
@@ -71,9 +71,9 @@ export default function TodoItem({ todo, onEdit }: TodoItemProps) {
   return (
     <div
       className={cn(
-        'flex items-center gap-3 rounded-lg border bg-card p-4 transition-all duration-200',
-        'hover:shadow-lg hover:shadow-accent/5 hover:border-accent/20',
-        todo.completed && 'opacity-60'
+        'flex items-center gap-3 px-3 py-2 rounded-md transition-colors duration-150',
+        'hover:bg-card-elevated',
+        todo.completed && 'opacity-50'
       )}
     >
       <Checkbox
@@ -82,97 +82,85 @@ export default function TodoItem({ todo, onEdit }: TodoItemProps) {
         disabled={toggleMutation.isPending}
       />
 
-      <div className="flex-1 min-w-0 cursor-pointer" onClick={() => onEdit(todo)}>
-        <div className="flex items-center gap-2">
-          <h3
-            className={cn(
-              'font-medium truncate',
-              todo.completed && 'line-through text-muted-foreground'
-            )}
-          >
-            {todo.title}
-          </h3>
-          <span
-            className={cn(
-              'text-[9px] px-1.5 py-0.5 rounded-full font-medium shrink-0',
-              priorityStyles[todo.priority]
-            )}
-          >
-            {todo.priority}
-          </span>
-          {todo.category && (
-            <span className="text-[9px] px-1.5 py-0.5 rounded font-medium uppercase tracking-wide bg-blue-500/15 text-blue-400 shrink-0">
-              {todo.category}
-            </span>
-          )}
-          {todo.recurrence_rule && (
-            <span className="text-[9px] px-1.5 py-0.5 rounded font-medium uppercase tracking-wide bg-purple-500/15 text-purple-400 shrink-0">
-              {recurrenceLabels[todo.recurrence_rule] || todo.recurrence_rule}
-            </span>
-          )}
-        </div>
-
-        {todo.description && (
-          <p className="text-sm text-muted-foreground mt-1 line-clamp-1">{todo.description}</p>
+      <span
+        className={cn(
+          'text-sm font-medium truncate flex-1 min-w-0 cursor-pointer',
+          todo.completed && 'line-through text-muted-foreground'
         )}
+        onClick={() => onEdit(todo)}
+      >
+        {todo.title}
+      </span>
 
-        <div className="flex items-center gap-3 mt-1.5">
+      {/* Inline pills */}
+      <span
+        className={cn(
+          'text-[9px] px-1.5 py-0.5 rounded-full font-medium shrink-0',
+          priorityStyles[todo.priority]
+        )}
+      >
+        {todo.priority}
+      </span>
+
+      {todo.category && (
+        <span className="text-[9px] px-1.5 py-0.5 rounded font-medium uppercase tracking-wide bg-blue-500/15 text-blue-400 shrink-0">
+          {todo.category}
+        </span>
+      )}
+
+      {todo.recurrence_rule && (
+        <span className="text-[9px] px-1.5 py-0.5 rounded font-medium uppercase tracking-wide bg-purple-500/15 text-purple-400 shrink-0">
+          {recurrenceLabels[todo.recurrence_rule] || todo.recurrence_rule}
+        </span>
+      )}
+
+      {/* Date / time / reset info — right-aligned cluster */}
+      {showResetInfo ? (
+        <div className="flex items-center gap-1 text-[11px] text-purple-400 shrink-0">
+          <RefreshCw className="h-3 w-3" />
+          <span>
+            Resets {format(resetDate, 'EEE dd/MM')}
+            {nextDueDate && (
+              <> · Due {format(nextDueDate, 'dd/MM')}{todo.due_time ? ` ${todo.due_time.slice(0, 5)}` : ''}</>
+            )}
+          </span>
+        </div>
+      ) : (
+        <>
           {dueDate && (
-            <div
+            <span
               className={cn(
-                'flex items-center gap-1 text-xs',
-                isOverdue
-                  ? 'text-red-400'
-                  : isDueToday
-                    ? 'text-yellow-400'
-                    : 'text-muted-foreground'
+                'flex items-center gap-1 text-[11px] shrink-0',
+                isOverdue ? 'text-red-400' : isDueToday ? 'text-yellow-400' : 'text-muted-foreground'
               )}
             >
-              {isOverdue ? (
-                <AlertCircle className="h-3 w-3" />
-              ) : (
-                <Calendar className="h-3 w-3" />
-              )}
-              {isOverdue ? 'Overdue — ' : isDueToday ? 'Today — ' : ''}
-              {format(dueDate, 'MMM d, yyyy')}
-            </div>
+              {isOverdue ? <AlertCircle className="h-3 w-3" /> : <Calendar className="h-3 w-3" />}
+              {isOverdue ? 'Overdue · ' : isDueToday ? 'Today · ' : ''}
+              {format(dueDate, 'MMM d')}
+            </span>
           )}
-
           {todo.due_time && (
-            <div className="flex items-center gap-1 text-xs text-muted-foreground">
+            <span className="flex items-center gap-1 text-[11px] text-muted-foreground shrink-0">
               <Clock className="h-3 w-3" />
               {todo.due_time.slice(0, 5)}
-            </div>
+            </span>
           )}
+        </>
+      )}
 
-          {showResetInfo && (
-            <div className="flex items-center gap-1 text-xs text-purple-400">
-              <RefreshCw className="h-3 w-3" />
-              <span>
-                Resets {format(resetDate, 'EEE dd/MM/yy')}
-                {nextDueDate && (
-                  <> · Next due {format(nextDueDate, 'dd/MM/yy')}{todo.due_time ? ` at ${todo.due_time.slice(0, 5)}` : ''}</>
-                )}
-              </span>
-            </div>
-          )}
-        </div>
-      </div>
-
-      <div className="flex items-center gap-1 shrink-0">
-        <Button variant="ghost" size="icon" onClick={() => onEdit(todo)} className="h-8 w-8">
-          <Pencil className="h-3.5 w-3.5" />
-        </Button>
-        <Button
-          variant="ghost"
-          size="icon"
-          onClick={() => deleteMutation.mutate()}
-          disabled={deleteMutation.isPending}
-          className="h-8 w-8 hover:bg-destructive/10 hover:text-destructive"
-        >
-          <Trash2 className="h-3.5 w-3.5" />
-        </Button>
-      </div>
+      {/* Actions */}
+      <Button variant="ghost" size="icon" onClick={() => onEdit(todo)} className="h-7 w-7 shrink-0">
+        <Pencil className="h-3 w-3" />
+      </Button>
+      <Button
+        variant="ghost"
+        size="icon"
+        onClick={() => deleteMutation.mutate()}
+        disabled={deleteMutation.isPending}
+        className="h-7 w-7 shrink-0 hover:bg-destructive/10 hover:text-destructive"
+      >
+        <Trash2 className="h-3 w-3" />
+      </Button>
     </div>
   );
 }
diff --git a/frontend/src/components/todos/TodoList.tsx b/frontend/src/components/todos/TodoList.tsx
index 99bffd3..2c61ea0 100644
--- a/frontend/src/components/todos/TodoList.tsx
+++ b/frontend/src/components/todos/TodoList.tsx
@@ -73,7 +73,7 @@ export default function TodoList({ todos, onEdit, onAdd }: TodoListProps) {
   // If only one group, skip headers
   if (groups.length === 1) {
     return (
-      <div className="space-y-2">
+      <div className="space-y-0.5">
         {groups[0].todos.map((todo) => (
           <TodoItem key={todo.id} todo={todo} onEdit={onEdit} />
         ))}
@@ -89,7 +89,7 @@ export default function TodoList({ todos, onEdit, onAdd }: TodoListProps) {
             {group.label}
             <span className="ml-1.5 tabular-nums">({group.todos.length})</span>
           </h3>
-          <div className="space-y-2">
+          <div className="space-y-0.5">
             {group.todos.map((todo) => (
               <TodoItem key={todo.id} todo={todo} onEdit={onEdit} />
             ))}