---
phase: 2
slug: users-authentication
status: approved
shadcn_initialized: false
preset: none
created: 2026-05-22
---

# Phase 2 — UI Design Contract

> Visual and interaction contract for Phase 2: Users & Authentication.
> Generated by gsd-ui-researcher, verified by gsd-ui-checker.

---

## Design System

| Property | Value |
|----------|-------|
| Tool | none — raw Tailwind CSS v3 |
| Preset | not applicable |
| Component library | none |
| Icon library | Inline SVG heroicons (stroke, no fill) — matches existing AppSidebar and DocumentCard patterns |
| Font | System font stack (Tailwind default: ui-sans-serif, system-ui, sans-serif) |

**Source:** Detected from `frontend/package.json` (no icon library installed), `frontend/tailwind.config.js` (empty theme.extend), and existing component audit.

---

## Spacing Scale

Declared values (multiples of 4 only):

| Token | Value | Usage |
|-------|-------|-------|
| xs | 4px | Icon-to-label gaps, badge internal padding, inline list gaps |
| sm | 8px | Input icon padding, compact inline spacing |
| md | 16px | Default field padding, card internal padding, form row gap |
| lg | 24px | Section vertical gap, card-to-card gap |
| xl | 32px | Form block top margin, admin table row height padding |
| 2xl | 48px | Auth page vertical centering padding |
| 3xl | 64px | Auth card max-height clearance from viewport edge |

Exceptions:
- Touch targets (buttons, checkboxes, radio): minimum 44px height — enforced via `min-h-[44px]` on all interactive controls
- TOTP code input cells: 48px wide × 56px tall per digit cell (6 cells). Justification: 48px (scale) is too compact for touch-target comfort on a digit-only input; 64px wastes vertical space — 56px balances touch ergonomics and form compactness.
- Backup code grid cells and text inputs: 12px vertical/horizontal padding (`py-3 px-3` = 12px). Justification: 16px inflates form card height beyond max-w-sm on mobile viewports; 8px collapses touch targets below 44px when combined with text-sm line height — 12px is the ergonomic midpoint. All instances use the same value for consistency.

---

## Typography

| Role | Size | Weight | Line Height | Tailwind Class |
|------|------|--------|-------------|----------------|
| Body | 14px | 400 (regular) | 1.5 | `text-sm` |
| Label | 14px | 600 (semibold) | 1.4 | `text-sm font-semibold` |
| Heading | 20px | 600 (semibold) | 1.3 | `text-xl font-semibold` |
| Display | 24px | 600 (semibold) | 1.2 | `text-2xl font-semibold` |

**Source:** Extracted from `HomeView.vue` (`text-2xl font-bold` page heading, `text-sm` body, `text-lg font-semibold` section headings) and `DocumentCard.vue` (`font-medium text-sm`). Heading reduced from text-lg to text-xl for auth page section hierarchy.

Font weight scale: exactly 2 weights — regular (400) for body text and helper text; semibold (600) for headings, labels, CTAs, and display text. Differentiation between roles relies on SIZE, not weight. Do not use `font-medium` (500) or `font-bold` (700) anywhere in Phase 2 components.

---

## Color

| Role | Value | Tailwind Token | Usage |
|------|-------|----------------|-------|
| Dominant (60%) | #f9fafb | `bg-gray-50` | Page background — all views |
| Secondary (30%) | #ffffff | `bg-white` | Auth cards, form panels, admin table rows, sidebar |
| Accent (10%) | #4f46e5 | `indigo-600` / `indigo-700` | Reserved for: primary CTA buttons only, active nav link text, brand logo text |
| Accent subtle | #eef2ff | `indigo-50` | Active nav link background, icon container backgrounds |
| Destructive | #dc2626 | `red-600` | Deactivate user action, sign-out-all confirmation button, field validation errors |
| Warning | #d97706 | `amber-600` | Password strength: weak/medium indicator only |
| Success | #16a34a | `green-600` | Password strength: strong indicator, TOTP enrollment success |
| Neutral border | #e5e7eb | `gray-200` | Card borders, input default border, table dividers |
| Muted text | #9ca3af | `gray-400` | Helper text, placeholder text, secondary metadata |

**Source:** `style.css` (body bg-gray-50 text-gray-900), `AppSidebar.vue` (indigo-600 brand, indigo-50 active bg, indigo-700 active text), `DocumentCard.vue` (gray-200 border, hover:indigo-300). Destructive and warning added for auth-specific needs.

Accent reserved for: primary CTA buttons, active sidebar nav link text, DocuVault brand/logo text.
Accent is NOT used on: input focus rings (use `ring-indigo-500` only), links within prose, or secondary actions.

Input focus ring: `focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 focus:outline-none`

---

## Form Field States

All text inputs (`<input type="text|email|password">`) follow this contract:

| State | Border | Background | Ring | Text |
|-------|--------|------------|------|------|
| Default | `border-gray-300` | `bg-white` | none | `text-gray-900` |
| Focused | `border-indigo-500` | `bg-white` | `ring-2 ring-indigo-500` | `text-gray-900` |
| Error | `border-red-500` | `bg-white` | `ring-2 ring-red-500` | `text-gray-900` |
| Disabled | `border-gray-200` | `bg-gray-50` | none | `text-gray-400` |
| Read-only | `border-gray-200` | `bg-gray-50` | none | `text-gray-700` |

Base classes (all states share): `block w-full rounded-lg px-3 py-3 text-sm transition-colors`

Error messages appear **inline**, directly below the field, never as a toast. Class: `mt-1 text-xs text-red-600`. Maximum 1 error line per field.

---

## Password Strength Indicator

Displayed below the password input on Register and Password Reset (new password) screens only.

Visual contract:
- 4-segment horizontal bar, full width of the input
- Each segment: 4px tall, rounded, `gap-1` between segments
- Segments light up left-to-right based on score

| Score | Segments lit | Bar color | Label |
|-------|-------------|-----------|-------|
| 0 (empty) | 0 | — | hidden |
| 1 (too short / fails rules) | 1 | `bg-red-500` | "Too weak" |
| 2 (fails 2+ rules) | 2 | `bg-amber-500` | "Weak" |
| 3 (fails 1 rule) | 3 | `bg-amber-400` | "Fair" |
| 4 (all rules pass) | 4 | `bg-green-500` | "Strong" |

Rules checked client-side (≥12 chars, uppercase, lowercase, digit, special char — matches AUTH-01):
- Label: `text-xs font-semibold` at same color as the bar, right-aligned
- Unlit segments: `bg-gray-200`
- Layout: `mt-2 space-y-1`

HaveIBeenPwned breach check runs on blur (not on every keystroke). If the password is pwned, an inline error appears below the strength bar: "This password has appeared in a data breach. Choose a different password." — same `text-xs text-red-600` style. The strength bar is NOT cleared; both messages coexist.

---

## TOTP Enrollment Flow

**Step 1 — QR Code Display**

- QR code: 200px × 200px centered in a white card with `border border-gray-200 rounded-xl p-6`
- Manual secret: `font-mono text-sm text-gray-700 bg-gray-50 px-3 py-2 rounded-md border border-gray-200 break-all`
- Copy secret button: icon-only (clipboard SVG, w-4 h-4), `text-gray-400 hover:text-gray-600`, positioned inline right of the secret block. Must include `aria-label="Copy secret key"` for accessibility.
- Instruction copy: "Open your authenticator app and scan this QR code, or enter the key manually."

**Step 2 — Code Verification**

- Single 6-digit code input: rendered as one `<input type="text" inputmode="numeric" maxlength="6">` field, NOT 6 separate cells
- Width: `w-36` (144px), centered
- Error state on wrong code: field switches to error state + inline message "Incorrect code. Try again." — generic, no hint about time window
- On success: green checkmark icon (w-5 h-5 text-green-600) + "Authenticator connected." transition before proceeding to backup codes

**Step 3 — Backup Codes Display**

Layout: 2-column grid of codes (`grid grid-cols-2 gap-2`)

Each code cell:
- `font-mono text-sm text-gray-800`
- `bg-gray-50 border border-gray-200 rounded-md px-3 py-2 text-center`
- Do not number them (no 1., 2. prefix — prevents users from thinking order matters)

Copy-all button: `"Copy all codes"` — text button with clipboard icon, `text-indigo-600 hover:text-indigo-700 text-sm font-semibold`. On click: copies newline-separated codes to clipboard, button text changes to `"Copied"` for 2 seconds.

Acknowledgment checkbox (required before proceeding):
- Checkbox + label: `"I have saved these codes in a secure place. I understand they will not be shown again."`
- Checkbox class: `rounded border-gray-300 text-indigo-600 focus:ring-indigo-500`
- "Enable two-factor authentication" CTA button: disabled (`opacity-50 cursor-not-allowed`) until checkbox is checked

---

## Login Flow — TOTP Step

Login is a **two-step flow**, not a single form:

**Step 1:** Email + password fields + "Sign in" button
**Step 2 (only for TOTP-enrolled users):** Separate screen/card with:

- Heading: "Two-factor authentication"
- Helper: "Enter the 6-digit code from your authenticator app."
- Single code input (same spec as enrollment verification above)
- Secondary link below: "Use a backup code instead" — `text-sm text-indigo-600 hover:underline`
- Back link: "Back to sign in" — `text-sm text-gray-500 hover:text-gray-700`

Backup code entry: replaces the code input with `<input type="text" placeholder="XXXXXXXX">` and label "Enter a backup code". Same error state on invalid/already-used code, generic message: "Invalid or already used code."

The step transition (password accepted → TOTP screen) is NOT a page navigation. The card content swaps in place (v-if swap). URL stays at `/login`.

---

## Loading States

All async actions must show a loading state. Contract:

| Action | Loading indicator | Button state |
|--------|------------------|--------------|
| Login submit | Spinner (w-4 h-4, inline left of button label) | `disabled`, `opacity-75` |
| Register submit | Spinner inline | `disabled`, `opacity-75` |
| HaveIBeenPwned breach check | Spinner (w-3 h-3) right-aligned inside input field | Input remains editable |
| Password reset email send | Spinner inline | `disabled`, `opacity-75` |
| TOTP code verify | Spinner inline | `disabled`, `opacity-75` |
| Admin: create user | Spinner inline | `disabled`, `opacity-75` |
| Admin: deactivate user | Row-level spinner in action column | Row actions `pointer-events-none` |
| Admin: reset password | Row-level spinner | Row actions `pointer-events-none` |
| Admin: save quota | Spinner inline in edit cell | Save button `disabled` |
| Sign-out-all | Spinner inline | `disabled`, `opacity-75` |

Spinner: `animate-spin rounded-full border-2 border-current border-t-transparent` — inherits button text color. No external spinner library.

---

## Error Message Placement

| Error type | Placement | Style |
|------------|-----------|-------|
| Field validation (required, format, strength) | Inline, below field | `mt-1 text-xs text-red-600` |
| Server field error (email taken, invalid creds) | Inline, below affected field | `mt-1 text-xs text-red-600` |
| Form-level server error (generic 500, network) | Above the submit button, inside the card | `p-3 rounded-lg bg-red-50 border border-red-200 text-sm text-red-700` |
| Session expired (401 on any page) | Toast, top-right, 5s auto-dismiss | `bg-gray-900 text-white text-sm px-4 py-3 rounded-lg shadow-lg` |
| Rate limit hit | Inline form-level block | Same as form-level server error, with copy "Too many attempts. Try again in X minutes." |
| Success (password reset email sent) | Inline, replaces form | `p-4 bg-green-50 border border-green-200 text-sm text-green-800 rounded-lg` |

**Security copy rule:** Error messages MUST NOT confirm whether an email address exists in the system. Login failure: "Incorrect email or password." Password reset: "If an account exists for that email, you will receive a reset link shortly." — identical response for existing and non-existing emails (anti-enumeration).

---

## Auth Page Layout

Auth pages (`/login`, `/register`, `/reset-password`) share a single-column centered layout:

- Page background: `bg-gray-50 min-h-screen flex items-center justify-center`
- Card: `bg-white rounded-2xl shadow-sm border border-gray-200 p-8 w-full max-w-sm`
- Logo/brand above card: `text-xl font-semibold text-indigo-600 tracking-tight` centered, `mb-6`
- Card heading: `text-2xl font-semibold text-gray-900 mb-1`
- Card subheading: `text-sm text-gray-500 mb-6`
- No sidebar on auth pages — full-width layout

Primary focal point of all auth screens is the card heading (Display / 24px / text-gray-900 font-semibold); secondary anchor is the primary CTA button (indigo-600 bg).

Auth pages are NOT wrapped in the main `App.vue` sidebar layout. They use a bare layout with no navigation.

---

## Account View (/account)

Uses the standard sidebar + main content layout (same as HomeView).

Sections (rendered as stacked cards with `space-y-6`):

1. **Account information** — display-only: email, role badge
2. **Two-factor authentication** — TOTP status + enrollment/disable controls
3. **Change password** — current password + new password + strength indicator
4. **Sessions** — "Sign out all devices" with confirmation dialog

Role badge: `inline-flex items-center px-2 py-1 rounded text-xs font-semibold bg-indigo-100 text-indigo-700` for admin; `bg-gray-100 text-gray-600` for user.

**Sign-out-all confirmation dialog:**

- Not a browser `confirm()`. Rendered as an inline confirmation block that replaces the button on click.
- Copy: "This will sign you out of all devices, including this one. You will need to sign in again."
- Two buttons: "Keep signed in" (`text-gray-600 hover:text-gray-800 text-sm`) + "Sign out all devices" (`bg-red-600 hover:bg-red-700 text-white text-sm font-semibold px-4 py-2 rounded-lg`)
- After confirmation: loading state on the destructive button, then redirect to `/login`

---

## Admin View (/admin)

Uses standard sidebar layout. Admin link in `AppSidebar.vue` visible only when `useAuthStore().user?.role === 'admin'`. Admin nav link styled identically to other nav links (no special styling — admin access is not advertised).

**Sub-navigation (within AdminView):**

Horizontal tab strip below the page heading:
- Tab class (default): `px-4 py-2 text-sm font-semibold text-gray-500 hover:text-gray-700 border-b-2 border-transparent`
- Tab class (active): `px-4 py-2 text-sm font-semibold text-indigo-600 border-b-2 border-indigo-600`
- Strip: `flex border-b border-gray-200 mb-6`
- Tabs: "Users" | "Quotas" | "AI Config"

**Users Tab — Table:**

Table structure: full-width, `divide-y divide-gray-200`, inside a `bg-white rounded-xl border border-gray-200 overflow-hidden`

Columns: Email | Role | Status | Created | Actions

| Row state | Background | Status badge |
|-----------|------------|--------------|
| Active user | `bg-white` | `bg-green-100 text-green-700` "Active" |
| Deactivated user | `bg-gray-50` | `bg-gray-100 text-gray-500` "Deactivated" |
| Admin user (active) | `bg-white` | Same as active + role badge |

Row text: `text-sm text-gray-900` for email, `text-sm text-gray-500` for created date.

Actions column (per row): text links, separated by `·`
- Active row: "Reset password" · "Deactivate"
- Deactivated row: "Reactivate" (no reset password on deactivated accounts)
- Deactivate link: `text-red-600 hover:text-red-700 text-sm`
- Other action links: `text-indigo-600 hover:text-indigo-700 text-sm`

**Create User (Users tab):**

"Create user" button: positioned top-right of table, `bg-indigo-600 hover:bg-indigo-700 text-white text-sm font-semibold px-4 py-2 rounded-lg`.

Create user form renders as an inline panel above the table (not a modal), with: email field, temporary password field (pre-generated, read-only with copy button), role selector (dropdown: User / Admin).

**Quotas Tab — Inline Edit:**

Table columns: Email | Used | Limit | Usage % | Actions

Limit field is editable inline. Click "Edit" → limit cell becomes `<input type="number" min="1" step="1">` (in MB) with Save / Cancel buttons. Warning shown inline if new limit < current usage: `text-xs text-amber-600 mt-1 "New limit is below current usage (X MB). Existing documents will not be deleted, but uploads will be blocked."`

**AI Config Tab:**

Table columns: Email | AI Provider | AI Model | Actions

Provider and model: dropdown selectors (not free-text). Populated from the backend's supported provider list. "Save" button per row. No bulk edit.

---

## Sidebar Updates (Phase 2)

`AppSidebar.vue` gains two additions:

1. **Admin link** (bottom section, above Settings): conditionally rendered, `v-if="authStore.user?.role === 'admin'"` — shield SVG icon (w-4 h-4), label "Admin". Same nav-link styling.

2. **User identity footer**: below the settings link at very bottom.
   - Layout: `flex items-center gap-3 px-4 py-3 border-t border-gray-100`
   - Avatar: initials-based circle, 32px, `bg-indigo-100 text-indigo-700 text-xs font-semibold rounded-full w-8 h-8 flex items-center justify-center shrink-0`
   - Email: `text-xs text-gray-600 truncate flex-1`
   - Sign-out icon button: arrow-right-on-rectangle SVG (w-4 h-4), `text-gray-400 hover:text-gray-600`, `aria-label="Sign out"`

---

## Router Guard Feedback

When an unauthenticated user is redirected to `/login` from a protected route, the login card shows no banner by default. The router saves the `redirect` query param (`/login?redirect=/account`). After successful login, the router navigates to the saved route.

If the redirect was triggered by a 401 (token expired, not initial page load), show the session-expired toast (defined in Error Message Placement above) before the redirect completes.

---

## Copywriting Contract

| Element | Copy |
|---------|------|
| Register page heading | "Create your account" |
| Register page subheading | "Start managing your documents securely." |
| Register primary CTA | "Create account" |
| Login page heading | "Sign in to DocuVault" |
| Login page subheading | (none) |
| Login primary CTA | "Sign in" |
| Login: redirect to register | "Don't have an account? Create one" |
| Register: redirect to login | "Already have an account? Sign in" |
| Forgot password link | "Forgot your password?" |
| Password reset page heading | "Reset your password" |
| Password reset subheading | "Enter your email and we'll send you a reset link." |
| Password reset CTA | "Send reset link" |
| Password reset success | "If an account exists for that email, you will receive a reset link shortly. Check your inbox." |
| New password page heading | "Set a new password" |
| New password CTA | "Set password" |
| New password success copy | "Password updated. Please sign in." (redirects to /login, not auto-login — per AUTH-05) |
| TOTP step heading | "Two-factor authentication" |
| TOTP step helper | "Enter the 6-digit code from your authenticator app." |
| TOTP verify CTA | "Verify code" |
| TOTP backup code link | "Use a backup code instead" |
| TOTP enrollment heading | "Set up two-factor authentication" |
| TOTP backup codes heading | "Save your backup codes" |
| Backup codes subheading | "Store these codes somewhere safe. Each can only be used once if you lose access to your authenticator app." |
| Backup codes copy-all CTA | "Copy all codes" |
| Backup codes acknowledge checkbox | "I have saved these codes in a secure place. I understand they will not be shown again." |
| TOTP enable CTA | "Enable two-factor authentication" |
| Account page heading | "Account settings" |
| Sign-out-all label | "Sign out all devices" |
| Sign-out-all confirmation copy | "This will sign you out of all devices, including this one. You will need to sign in again." |
| Sign-out-all cancel CTA | "Keep signed in" |
| Sign-out-all destructive CTA | "Sign out all devices" |
| Admin page heading | "Admin panel" |
| Admin: create user CTA | "Create user" |
| Admin: deactivate action | "Deactivate" |
| Admin: reactivate action | "Reactivate" |
| Admin: reset password action | "Reset password" |
| Admin: deactivate confirmation | Inline: "Deactivate [email]? They will lose access immediately. Their data is preserved." + "Deactivate" / "Keep account" |
| Empty state (users table) | Heading: "No users yet" / Body: "Create the first user account to get started." |
| Generic server error | "Something went wrong. Please try again or contact support if the problem persists." |
| Login failure | "Incorrect email or password." |
| Rate limit error | "Too many attempts. Please wait a few minutes and try again." |
| TOTP wrong code | "Incorrect code. Try again." |
| Backup code invalid | "Invalid or already used code." |
| Password breach error | "This password has appeared in a data breach. Choose a different password." |
| Password too weak | "Password must be at least 12 characters and include uppercase, lowercase, a number, and a special character." |

**Security copy rules:**
- Never confirm or deny whether an email exists (password reset and login)
- Never include user email or PII in generic error messages
- Never state the number of remaining TOTP attempts
- Admin actions on user rows include the email in the confirmation to prevent mis-clicks, but error responses from the server must not echo credentials back

---

## Registry Safety

| Registry | Blocks Used | Safety Gate |
|----------|-------------|-------------|
| shadcn official | none | not applicable — shadcn not installed |
| third-party | none | not applicable |

No third-party component registries. All components are handwritten Vue 3 SFC with raw Tailwind CSS, consistent with the existing codebase pattern.

---

## Component Inventory (New — Phase 2)

Components to create, with their file paths:

| Component | Path | Description |
|-----------|------|-------------|
| LoginView | `src/views/auth/LoginView.vue` | Two-step login (password → TOTP) |
| RegisterView | `src/views/auth/RegisterView.vue` | Registration with strength indicator |
| PasswordResetView | `src/views/auth/PasswordResetView.vue` | Reset request form + success state |
| NewPasswordView | `src/views/auth/NewPasswordView.vue` | Token-gated new password form |
| AccountView | `src/views/AccountView.vue` | Account settings, TOTP, sign-out-all |
| AdminView | `src/views/AdminView.vue` | Admin panel with sub-navigation |
| AuthLayout | `src/layouts/AuthLayout.vue` | Bare centered layout (no sidebar) for auth pages |
| PasswordStrengthBar | `src/components/auth/PasswordStrengthBar.vue` | 4-segment strength indicator |
| TotpEnrollment | `src/components/auth/TotpEnrollment.vue` | QR + manual secret + code verify |
| BackupCodesDisplay | `src/components/auth/BackupCodesDisplay.vue` | Grid + copy-all + acknowledge checkbox |
| AppSpinner | `src/components/ui/AppSpinner.vue` | Inline CSS spinner, inherits color |
| ConfirmBlock | `src/components/ui/ConfirmBlock.vue` | Inline confirm/cancel replacement for destructive actions |
| AdminUsersTab | `src/components/admin/AdminUsersTab.vue` | User table + create user form |
| AdminQuotasTab | `src/components/admin/AdminQuotasTab.vue` | Quota inline edit table |
| AdminAiConfigTab | `src/components/admin/AdminAiConfigTab.vue` | AI provider/model dropdowns per user |

---

## Checker Sign-Off

- [x] Dimension 1 Copywriting: PASS
- [x] Dimension 2 Visuals: PASS
- [x] Dimension 3 Color: PASS
- [x] Dimension 4 Typography: PASS
- [x] Dimension 5 Spacing: PASS
- [x] Dimension 6 Registry Safety: PASS

**Approval:** approved — 2026-05-22
