diff --git a/AGENTS.md b/AGENTS.md
index bbd4de5..23ac123 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -6,7 +6,9 @@ Read this file fully before taking any action.
 
 ## Project Context
 
-Single-page user portal for **agent-loft.com** — lets customers sign up, log in, and manage their AI agents. No framework, no build step, no external dependencies.
+Single-page user portal for **derez.ai** — lets customers sign up, log in, and manage their AI agents. No framework, no build step, no external dependencies.
+
+**Active visual theme:** Digital Grid — deep navy/black with electric-cyan `#00f5ff` accent, monospace `Courier New` font, 3-D perspective grid floor, star-field sky. Full design spec in `style_guide.md`.
 
 | Item | Detail |
 |---|---|
@@ -25,6 +27,7 @@ styles.css              ← all styles — design tokens, layout, components
 app.js                  ← all logic — auth, agents, keys, password, restart, backups, contract
 start                   ← dev server launcher (live-server)
 AGENTS.md               ← this file
+style_guide.md          ← visual design spec (tokens, typography, components)
 
 skills/
   index.json            ← summary: [{ name, file, description }] — loaded on wizard step 1
@@ -103,27 +106,27 @@ The email is the only session token. There is no password verification on the fr
 
 ## Design Tokens
 
-All tokens are CSS custom properties declared in `:root` inside `styles.css`.
+All tokens are CSS custom properties declared in `:root` inside `styles.css`. See `style_guide.md` for full usage rules and visual examples.
 
 | Variable | Value | Usage |
 |---|---|---|
-| `--bg` | `#0f1117` | page background |
-| `--bg-card` | `#1a1d27` | app shell / auth card surface |
-| `--bg-inner` | `#141720` | inner cards, tabs bar |
-| `--bg-hover` | `#22263a` | hover states, ghost button bg |
-| `--bg-input` | `#12151f` | input / textarea background |
-| `--border` | `#2a2f45` | default borders |
-| `--border-hi` | `rgba(79,142,247,0.28)` | shell outer border glow |
-| `--accent` | `#4f8ef7` | primary brand blue |
-| `--accent-dim` | `#1a2d5e` | active tab bg, logo bg |
-| `--danger` | `#e05252` | destructive actions, errors |
-| `--danger-dim` | `#5a1f1f` | error message background |
-| `--success` | `#3fc97e` | positive indicators, active dot |
-| `--warning` | `#f0a04b` | mid-range credit bar, contract warning |
-| `--text` | `#e4e8f5` | primary text |
-| `--text-muted` | `#7a82a0` | secondary text, labels |
+| `--bg` | `#000810` | page background |
+| `--bg-card` | `#010f20` | app shell / auth card surface |
+| `--bg-inner` | `#000d1a` | inner cards, tabs bar |
+| `--bg-hover` | `#001a30` | hover states, ghost button bg |
+| `--bg-input` | `#000813` | input / textarea background |
+| `--border` | `#0a3060` | default borders |
+| `--border-hi` | `rgba(0,245,255,0.45)` | shell outer border glow |
+| `--accent` | `#00f5ff` | primary electric-cyan accent |
+| `--accent-dim` | `#002535` | active tab bg, logo bg |
+| `--danger` | `#ff3b3b` | destructive actions, errors |
+| `--danger-dim` | `#3b0000` | error message background |
+| `--success` | `#00ff88` | positive indicators, active dot |
+| `--warning` | `#ffaa00` | mid-range credit bar, contract warning |
+| `--text` | `#c8f0ff` | primary text |
+| `--text-muted` | `#2e6a80` | secondary text, labels |
 | `--radius` | `8px` | default border-radius |
-| `--shadow` | (see CSS) | shell / auth card drop shadow |
+| `--shadow` | neon glow + depth (see CSS) | shell / auth card drop shadow |
 
 **Never use raw hex values in HTML or JS** — always reference a token via `var(--token-name)` in CSS or as a string literal only when building inline styles in JS (acceptable only for dynamic status colours in `renderKeys` and `renderContract`).
 
@@ -150,15 +153,15 @@ Card backgrounds are `--bg-inner` (one level darker than the shell's `--bg-card`
 
 ### Buttons
 
-| Class | Colour | Use for |
+| Class | Appearance | Use for |
 |---|---|---|
-| `btn btn-primary btn-sm` | `--accent` blue | navigation / open actions (Open Agent) |
-| `btn btn-ghost btn-sm` | `--bg-hover` grey + border | all card-header and inline actions (Restart Agent, Buy Credits, Restore, Extend Contract, Cancel, Make Backup) |
-| `btn btn-danger` | `--danger` red | confirm dialog destructive confirm only |
-| `btn btn-block` | — modifier, full width | auth form submit buttons |
+| `btn btn-primary btn-sm` | transparent bg · white text · `--accent` border + neon glow | primary navigation actions (Open Agent, Sign In, Next →) |
+| `btn btn-ghost btn-sm` | `--bg-hover` dark bg · `--text` · `--border` | all card-header and inline actions (Restart Agent, Buy Credits, Restore, Extend Contract, Cancel, Make Backup) |
+| `btn btn-danger` | `--danger` red fill · white text | confirm dialog destructive confirm only |
+| `btn btn-block` | — width modifier, full width | auth form submit buttons |
 
 **Card-header action buttons must:**
-- Use `btn btn-ghost btn-sm` (grey) by default, or `btn btn-primary btn-sm` (blue) for a primary navigation action.
+- Use `btn btn-ghost btn-sm` (dark) by default, or `btn btn-primary btn-sm` (cyan outline) for a primary navigation action.
 - Have **no SVG icons** — text label only.
 - When two buttons appear side-by-side in a header, wrap them in `<div style="display:flex;gap:8px;">` rather than placing them as siblings.
 
diff --git a/index.html b/index.html
index 3a3fa89..d20d4bb 100644
--- a/index.html
+++ b/index.html
@@ -3,7 +3,7 @@
     <head>
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-        <title>Derez — My Portal</title>
+        <title>derez.ai — My Portal</title>
         <link rel="stylesheet" href="styles.css" />
     </head>
     <body>
@@ -37,7 +37,7 @@
                         />
                     </svg>
                 </div>
-                <h1 class="auth-title">Derez</h1>
+                <h1 class="auth-title">derez.ai</h1>
                 <p class="auth-sub">Your AI agents, managed simply.</p>
             </div>
 
@@ -95,7 +95,7 @@
                             </svg>
                         </div>
                         <div>
-                            <h1 class="auth-title">Derez</h1>
+                            <h1 class="auth-title">derez.ai</h1>
                             <p class="auth-sub">
                                 Your AI agents, managed simply.
                             </p>
@@ -293,7 +293,7 @@
                             stroke="none"
                         />
                     </svg>
-                    Derez
+                    derez.ai
                 </div>
                 <!-- ── Header comment (centre) ───────────────────── -->
                 <div class="header-comment" id="header-comment-wrap">
diff --git a/style_guide.md b/style_guide.md
new file mode 100644
index 0000000..ffb2fd0
--- /dev/null
+++ b/style_guide.md
@@ -0,0 +1,480 @@
+# style_guide.md — derez.ai Visual Design Spec
+
+> **Scope:** tokens, typography, spacing, colour usage, and every UI component.  
+> Animations and background effects (star-field, perspective grid, horizon glow) are intentionally excluded — see `styles.css` directly for those.
+
+---
+
+## 1. Design Tokens
+
+All variables live in `:root` inside `styles.css`. **Never hard-code hex values** in HTML or JS — always use `var(--token-name)`.
+
+### 1.1 Colour palette
+
+| Token | Hex / Value | Role |
+|---|---|---|
+| `--bg` | `#000810` | Page background — deepest layer |
+| `--bg-card` | `#010f20` | App shell & auth card surface |
+| `--bg-inner` | `#000d1a` | Inner cards, tabs bar |
+| `--bg-hover` | `#001a30` | Hover state fills, ghost button bg |
+| `--bg-input` | `#000813` | Input, select, textarea background |
+| `--border` | `#0a3060` | Default 1 px borders |
+| `--border-hi` | `rgba(0,245,255,0.45)` | Shell / auth card outer glow border |
+| `--accent` | `#00f5ff` | Electric cyan — primary brand colour |
+| `--accent-dim` | `#002535` | Active tab fill, logo icon background |
+| `--danger` | `#ff3b3b` | Destructive actions, error states |
+| `--danger-dim` | `#3b0000` | Error message background |
+| `--success` | `#00ff88` | Positive indicators, active pulse dot |
+| `--warning` | `#ffaa00` | Mid-range credit bar, contract warning |
+| `--text` | `#c8f0ff` | Primary readable text |
+| `--text-muted` | `#2e6a80` | Labels, secondary text, placeholders |
+
+### 1.2 Shadow
+
+```css
+--shadow:
+    0 0 0 1px rgba(0, 245, 255, 0.25),   /* inner border glow */
+    0 0 60px rgba(0, 245, 255, 0.12),     /* wide cyan ambient */
+    0 28px 72px rgba(0, 0, 0, 0.9);       /* depth shadow */
+```
+
+Used on `.auth-card` and `.app-shell`. Do not apply to inner cards — they use only `--border`.
+
+### 1.3 Border radius
+
+| Token | Value | Applied to |
+|---|---|---|
+| `--radius` | `8px` | Cards, inputs, badges, modals |
+| Hard-coded `20px` | — | Pill shapes: agent tabs, user pill |
+| Hard-coded `6px` | — | Buttons (`.btn`) |
+| Hard-coded `4px` | — | Progress bars, small badges |
+
+---
+
+## 2. Typography
+
+### 2.1 Font stack
+
+```css
+font-family: "Courier New", Courier, monospace;
+```
+
+All UI text — body, labels, inputs, buttons — uses this monospace stack. This is a deliberate brand choice for the Digital Grid theme. No external fonts are loaded.
+
+### 2.2 Type scale
+
+| Usage | Size | Weight | Colour token |
+|---|---|---|---|
+| Auth title (`derez.ai`) | `22px` | `700` | `--text` |
+| Auth sub-heading | `13px` | `400` | `--text-muted` |
+| App brand (upper-left) | `15px` | `700` | `--accent` |
+| Card title | `13px` | `600` | `--text` |
+| Body / general | `14px` | `400` | `--text` |
+| Labels, secondary | `12px` | `500` | `--text-muted` |
+| Monospace values (SSH, keys) | `11.5px` | `400` | `--text` |
+| Hints / helper text | `11px` | `400` | `--text-muted` |
+| Badges, tiny labels | `10–11px` | `600` | varies |
+
+### 2.3 Letter spacing
+
+- App brand: `1.5px` (no text-transform — renders as `derez.ai` lowercase)
+- Card titles, tab labels: default (`0`)
+- Panel-header uppercase labels (e.g. "Support Chat"): `0.6px`
+
+---
+
+## 3. Spacing
+
+The layout uses a consistent 4-point base grid. Common values:
+
+| Value | Where used |
+|---|---|
+| `4px` | Tight gaps, small padding |
+| `6px` | Button gaps, icon-text gap |
+| `8px` | Toast padding, small card gap |
+| `10px` | Form gap, tab gap |
+| `12px` | Card body padding unit |
+| `14px` | Card header margin-bottom, button padding |
+| `16px` | Content grid gap, card padding |
+| `18px` | Card padding (default), header horizontal padding |
+| `20px` | Content grid padding |
+| `22px` | Shell header horizontal padding |
+
+---
+
+## 4. Layout
+
+### 4.1 Shell sizing
+
+| Element | Size |
+|---|---|
+| `.app-shell` | `min(1060px, 100vw − 16px)` × `min(780px, 100vh − 16px)` |
+| `.auth-card` (narrow) | `min(440px, 100vw − 24px)` |
+| `.auth-card` (auth-layout) | `min(1060px, 100vw − 16px)` |
+| `.app-header` height | `54px` |
+| `.agent-tabs-bar` height | `50px` |
+
+### 4.2 Content grid
+
+```
+.content-grid
+  display: grid
+  grid-template-columns: 1fr 1fr
+  gap: 16px
+  padding: 18px 20px
+  overflow-y: auto   ← only this element scrolls
+```
+
+Collapses to single column below `700px` viewport width.
+
+---
+
+## 5. Colour usage rules
+
+### Backgrounds (darkest → lightest)
+
+```
+--bg          page background
+  └── --bg-card      shell / auth card
+        └── --bg-inner     inner cards, tabs bar
+              └── --bg-input    inputs, textareas, code blocks
+```
+
+Use these in order. Never place `--bg-card` inside another `--bg-card` element — use `--bg-inner` for nested surfaces.
+
+### Text hierarchy
+
+- Main content: `--text`
+- Labels, secondary: `--text-muted`
+- Accent / interactive: `--accent`
+- Error: `--danger`
+- Success: `--success`
+
+### Borders
+
+- Default borders between sections: `1px solid var(--border)`
+- Highlight / outer glow borders (shell, modal): `1px solid var(--border-hi)`
+- Focus state on inputs: `border-color: var(--accent)`
+
+---
+
+## 6. Buttons
+
+### 6.1 Variants
+
+#### `.btn-primary` — outlined cyan (primary action)
+```css
+background: transparent
+color: #fff
+border: 1px solid var(--accent)
+box-shadow: 0 0 8px rgba(0,245,255,0.35), inset 0 0 8px rgba(0,245,255,0.04)
+```
+Hover: `background: rgba(0,245,255,0.08)` + brighter glow. `opacity` stays `1`.
+
+**Use for:** Open Agent, Sign In, Hire Agent, wizard Next, Send, Invite.
+
+#### `.btn-ghost` — dark fill (secondary action)
+```css
+background: var(--bg-hover)
+color: var(--text)
+border: 1px solid var(--border)
+```
+Hover: `opacity: 0.85`.
+
+**Use for:** Restart Agent, Make Backup, Restore, Extend Contract, Cancel, all card-header utility actions.
+
+#### `.btn-danger` — red fill (destructive confirm)
+```css
+background: var(--danger)
+color: #fff
+```
+**Use for:** the confirm-dialog "Confirm" button only. Never on card headers.
+
+#### `.btn-success` — green fill
+```css
+background: var(--success)
+color: #000
+```
+Rarely used; reserved for exceptional positive completions.
+
+### 6.2 Size modifiers
+
+| Modifier | Padding | Font size | Use |
+|---|---|---|---|
+| *(none)* | `7px 14px` | `13px` | Confirm dialog actions |
+| `.btn-sm` | `5px 10px` | `12px` | Card header, inline |
+| `.btn-block` | `10px 14px` | `14px` | Auth form full-width submit |
+
+### 6.3 Rules
+
+- Card-header buttons: **text label only** — no SVG icons.
+- Two side-by-side header buttons: wrap in `<div style="display:flex;gap:8px;">`.
+- `<a>` tags acting as buttons: apply `.btn .btn-ghost .btn-sm` — `.btn` nulls the underline.
+- Loading state: call `btnLoad(btn, label)` to disable + show spinner; `btnReset(btn)` to restore.
+- Disabled state: `opacity: 0.4; cursor: not-allowed`.
+
+---
+
+## 7. Cards
+
+Every content block is a `.card`.
+
+```html
+<div class="card">
+    <div class="card-header">
+        <span class="card-title">
+            <svg width="14" height="14">…</svg>
+            Title
+        </span>
+        <!-- optional: <button class="btn btn-ghost btn-sm">Action</button> -->
+    </div>
+    <!-- card body content -->
+</div>
+```
+
+| Property | Value |
+|---|---|
+| Background | `var(--bg-inner)` |
+| Border | `1px solid var(--border)` |
+| Border-radius | `var(--radius)` = `8px` |
+| Padding | `16px 18px` |
+
+`.card-full` adds `flex: 1` so the card stretches to fill remaining column height (used on Backups card).
+
+### Card title
+
+```css
+.card-title {
+    display: flex;
+    align-items: center;
+    gap: 7px;
+    font-size: 13px;
+    font-weight: 600;
+    color: var(--text);
+}
+```
+
+Icon size inside `.card-title`: always `14 × 14 px` SVG, `stroke="currentColor"`, `stroke-width="2"`.
+
+---
+
+## 8. Forms & Inputs
+
+### 8.1 Field structure
+
+```html
+<div class="form-row">          <!-- optional row wrapper for side-by-side fields -->
+    <div class="form-group">
+        <label>Label text</label>
+        <input type="text" placeholder="…" />
+    </div>
+</div>
+```
+
+| Property | Value |
+|---|---|
+| Label size | `12px`, weight `500`, colour `--text-muted` |
+| Input bg | `var(--bg-input)` |
+| Input border | `1px solid var(--border)` |
+| Input border-radius | `6px` |
+| Input padding | `9px 11px` |
+| Input font | `13px`, `var(--text)` |
+| Focus border | `var(--accent)` |
+
+### 8.2 Inline save button (`.pw-input-wrap`)
+
+Used when a save action lives inside the field (e.g. Instance Password, header comment password):
+
+```html
+<div class="pw-input-wrap">
+    <input type="password" … />
+    <button class="pw-save-btn" style="display:none" …>
+        <!-- 14×14 checkmark SVG -->
+    </button>
+</div>
+```
+
+The `.pw-save-btn` is `position: absolute; right: 6px`, shown/hidden by JS based on field content. Colour: `--accent`.
+
+### 8.3 Textarea
+
+Same rules as input. `resize: vertical` only. Font: monospace `12px`.
+
+### 8.4 Select
+
+Same visual as input. Options background: `var(--bg-card)`.
+
+---
+
+## 9. Data display rows
+
+### 9.1 Server info rows
+
+```html
+<div class="server-info-row">
+    <span class="server-info-label">Agent Type</span>
+    <span class="server-info-val">hermes</span>
+</div>
+```
+
+- Label: `12px`, `--text-muted`, capitalised
+- Value: `11.5px`, `--text`, monospace
+- Separator: `border-top: 1px solid var(--border)`
+- Clickable row (SSH Access): add `.server-info-row--copy` — hover turns value `--accent` with underline
+
+### 9.2 Backup rows
+
+```html
+<div class="backup-row">
+    <div class="backup-info">
+        <div class="backup-name">backup-2024-01-15</div>
+        <div class="backup-date">15 Jan 2024, 14:32</div>
+    </div>
+    <button class="btn btn-ghost btn-sm">Restore</button>
+</div>
+```
+
+- Name: `13px`, weight `500`, `--text`
+- Date: `11px`, `--text-muted`
+- List scrolls internally at `max-height: 320px`
+
+### 9.3 API Key rows
+
+Key row shows: name + monospace label + credit progress bar + Buy Credits button.
+
+Progress bar colour by usage:
+- `< 50 %` → `.prog-low` (`--success` green)
+- `50–79 %` → `.prog-mid` (`--warning` amber)
+- `≥ 80 %` → `.prog-high` (`--danger` red)
+
+---
+
+## 10. Status indicators
+
+### 10.1 Pulse dot (online indicator)
+
+```html
+<span class="pulse-dot"></span>
+```
+
+- `7px` circle, `background: var(--success)`, CSS `pulse` animation
+- Used in user-pill (header) and agent tabs
+
+### 10.2 Contract / status dots
+
+```html
+<span class="contract-dot contract-dot--green"></span>   <!-- active contract -->
+<span class="contract-dot contract-dot--yellow"></span>  <!-- expiring -->
+<span class="contract-dot contract-dot--red"></span>     <!-- expired / none -->
+```
+
+`9px` circle with a matching `box-shadow` ring at `20 %` opacity.
+
+---
+
+## 11. Navigation — Agent tabs
+
+```html
+<button class="agent-tab active">
+    <span class="agent-tab-dot"></span>
+    Agent Name
+    <span class="agent-tab-badge">fr</span>
+</button>
+```
+
+| State | Style |
+|---|---|
+| Default | `border: 1px solid var(--border)`, `color: --text-muted`, transparent bg |
+| Hover | `border-color: rgba(0,245,255,0.4)`, `bg: --bg-hover`, `color: --text` |
+| Active | `bg: --accent-dim`, `border: --accent`, `color: --accent` |
+
+`.agent-tab-badge` (region code): `10px`, weight `600`, `bg: --bg-hover` default, `bg: rgba(0,245,255,0.2)` when active.
+
+---
+
+## 12. Progress bars
+
+```html
+<div class="prog-wrap">
+    <div class="prog-bar prog-low" style="width: 42%"></div>
+</div>
+```
+
+- Track: `bg: --bg-input`, `height: 4px`, `border-radius: 4px`
+- Fill: `height: 100%`, `border-radius: 4px`, `transition: width 0.5s ease`
+- Colour class: `.prog-low` / `.prog-mid` / `.prog-high` (see §9.3)
+
+---
+
+## 13. Loading & feedback
+
+### 13.1 Loading rows
+
+```html
+<div class="loading-row"><div class="spinner"></div></div>
+```
+
+Centred, `padding: 20px`. The spinner is `18px`, `border: 2px solid var(--border)`, `border-top-color: var(--accent)`.
+
+`.spinner-sm` (13 px) goes inside a button during `btnLoad()`.
+
+### 13.2 Toast notifications
+
+Call `toast(message, type)` — never create toast HTML manually.
+
+| `type` | Left-border colour |
+|---|---|
+| `'info'` | `--accent` |
+| `'success'` | `--success` |
+| `'error'` | `--danger` |
+| `'warning'` | `--warning` |
+
+Toast body: `bg: --bg-card`, `border: 1px solid --border`, `border-radius: --radius`, auto-removes after 4 s.
+
+### 13.3 Confirm dialog (modal)
+
+```js
+const ok = await confirmDialog('Title', 'Message explaining the action.');
+if (!ok) return;
+```
+
+Modal: `bg: --bg-card`, `border: --border-hi`, `border-radius: 12px`. Footer has Cancel (`.btn-ghost`) + Confirm (`.btn-danger`).
+
+---
+
+## 14. Header layout
+
+```
+.app-header  (54px tall, padding: 0 22px)
+  ├── .app-brand          ← "derez.ai" lowercase, --accent, 15px bold, letter-spacing 1.5px
+  ├── .header-comment     ← centred, flex:1, editable agent name label
+  └── .app-user
+        ├── .user-pill    ← pulse-dot + email, border: --border, hover: --accent
+        └── .btn.btn-ghost.btn-sm  ← "Sign Out"
+```
+
+Header background: `linear-gradient(90deg, rgba(0,245,255,0.08), transparent 60%)` + `border-bottom: 1px solid var(--border-hi)`.
+
+---
+
+## 15. Auth card
+
+Auth card exists in two layouts controlled by the `body.auth-layout` class added by JS:
+
+| Mode | Width | Layout |
+|---|---|---|
+| Narrow (no class) | `min(440px, 100vw−24px)` | Single column — tab toggle shows Sign In / Hire Agent |
+| Wide (auth-layout) | `min(1060px, 100vw−16px)` | Two panes side-by-side, tab toggle hidden |
+
+Pricing badge (wide mode only): `bg: --accent-dim`, `border: 1px solid rgba(0,245,255,0.35)`, `border-radius: --radius`.
+
+---
+
+## 16. Rules for new components
+
+1. **Backgrounds:** use `--bg-inner` for cards nested inside the shell. Use `--bg-input` for text entry surfaces only.
+2. **Borders:** always `1px solid var(--border)` for structure; `var(--border-hi)` for emphasis (outer glow, focus rings on major panels).
+3. **Text:** never set a custom colour — use only `--text`, `--text-muted`, `--accent`, `--danger`, `--success`, `--warning`.
+4. **Icons in titles:** always `14 × 14 px`, `stroke="currentColor"`, `stroke-width="2"`.
+5. **Inline colour values in JS** are allowed only in `renderKeys()` and `renderContract()` for dynamic progress/status colours.
+6. **No raw hex values** anywhere else in HTML or JS.
diff --git a/styles.css b/styles.css
index a2064b8..525f51d 100644
--- a/styles.css
+++ b/styles.css
@@ -7,37 +7,34 @@
     padding: 0;
 }
 
-/* ─── Design tokens ──────────────────────────────────────────── */
+/* ─── Design tokens — THEME 01: DIGITAL GRID (Tron-inspired) ── */
 :root {
-    --bg: #0f1117;
-    --bg-card: #1a1d27;
-    --bg-inner: #141720;
-    --bg-hover: #22263a;
-    --bg-input: #12151f;
-    --border: #2a2f45;
-    --border-hi: rgba(79, 142, 247, 0.28);
-    --accent: #4f8ef7;
-    --accent-dim: #1a2d5e;
-    --danger: #e05252;
-    --danger-dim: #5a1f1f;
-    --success: #3fc97e;
-    --warning: #f0a04b;
-    --text: #e4e8f5;
-    --text-muted: #7a82a0;
+    --bg: #000810;
+    --bg-card: #010f20;
+    --bg-inner: #000d1a;
+    --bg-hover: #001a30;
+    --bg-input: #000813;
+    --border: #0a3060;
+    --border-hi: rgba(0, 245, 255, 0.45);
+    --accent: #00f5ff;
+    --accent-dim: #002535;
+    --danger: #ff3b3b;
+    --danger-dim: #3b0000;
+    --success: #00ff88;
+    --warning: #ffaa00;
+    --text: #c8f0ff;
+    --text-muted: #2e6a80;
     --radius: 8px;
     --shadow:
-        0 28px 72px rgba(0, 0, 0, 0.72), 0 0 0 1px rgba(79, 142, 247, 0.06);
+        0 0 0 1px rgba(0, 245, 255, 0.25), 0 0 60px rgba(0, 245, 255, 0.12),
+        0 28px 72px rgba(0, 0, 0, 0.9);
 }
 
 /* ─── Base ───────────────────────────────────────────────────── */
 html,
 body {
     height: 100%;
-    font-family:
-        "Segoe UI",
-        system-ui,
-        -apple-system,
-        sans-serif;
+    font-family: "Courier New", Courier, monospace;
     background: var(--bg);
     color: var(--text);
     font-size: 14px;
@@ -47,26 +44,271 @@ body {
     justify-content: center;
 }
 
-/* Subtle ambient glow in background */
+/* Digital grid — star field, ambient glow, horizon line */
 body::before {
     content: "";
     position: fixed;
     inset: 0;
     background:
+        /* ── Stars: solid-core dots, varied size & tint ── */
+        /* Row 1 — bright feature stars (y 3–12 %) */
         radial-gradient(
-            ellipse 60% 50% at 25% 30%,
-            rgba(79, 142, 247, 0.07) 0%,
-            transparent 70%
+            circle 5px at 5% 8%,
+            white 0%,
+            white 40%,
+            rgba(180, 245, 255, 0.3) 72%,
+            transparent 100%
         ),
         radial-gradient(
-            ellipse 50% 60% at 75% 70%,
-            rgba(100, 50, 200, 0.05) 0%,
-            transparent 70%
+            circle 3px at 15% 5%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 22% 12%,
+            rgba(180, 235, 255, 1) 0%,
+            rgba(180, 235, 255, 1) 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 6px at 31% 4%,
+            white 0%,
+            white 38%,
+            rgba(150, 220, 255, 0.35) 70%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 40% 9%,
+            rgba(160, 230, 255, 1) 0%,
+            rgba(160, 230, 255, 1) 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 47% 6%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 4px at 54% 3%,
+            rgba(190, 245, 255, 1) 0%,
+            rgba(190, 245, 255, 1) 42%,
+            rgba(190, 245, 255, 0.3) 72%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 63% 11%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 5px at 71% 7%,
+            white 0%,
+            white 40%,
+            rgba(180, 245, 255, 0.28) 70%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 79% 4%,
+            rgba(150, 215, 255, 1) 0%,
+            rgba(150, 215, 255, 1) 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 87% 9%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 4px at 94% 5%,
+            rgba(190, 245, 255, 1) 0%,
+            rgba(190, 245, 255, 1) 42%,
+            rgba(190, 245, 255, 0.28) 70%,
+            transparent 100%
+        ),
+        /* Row 2 — mid brightness (y 14–26 %) */
+        radial-gradient(
+                circle 2px at 9% 19%,
+                rgba(255, 255, 255, 0.65) 0%,
+                rgba(255, 255, 255, 0.65) 45%,
+                transparent 100%
+            ),
+        radial-gradient(
+            circle 3px at 18% 16%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 27% 22%,
+            rgba(180, 240, 255, 0.7) 0%,
+            rgba(180, 240, 255, 0.7) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 37% 14%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 50% 25%,
+            rgba(255, 255, 255, 0.6) 0%,
+            rgba(255, 255, 255, 0.6) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 4px at 57% 17%,
+            rgba(180, 240, 255, 1) 0%,
+            rgba(180, 240, 255, 1) 42%,
+            rgba(180, 240, 255, 0.28) 70%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 66% 23%,
+            rgba(255, 255, 255, 0.55) 0%,
+            rgba(255, 255, 255, 0.55) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 75% 15%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 83% 20%,
+            rgba(160, 225, 255, 0.7) 0%,
+            rgba(160, 225, 255, 0.7) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 91% 17%,
+            rgba(255, 255, 255, 0.6) 0%,
+            rgba(255, 255, 255, 0.6) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 98% 24%,
+            rgba(180, 240, 255, 1) 0%,
+            rgba(180, 240, 255, 1) 42%,
+            transparent 100%
+        ),
+        /* Row 3 — dim background stars (y 28–42 %) */
+        radial-gradient(
+                circle 2px at 3% 33%,
+                rgba(255, 255, 255, 0.4) 0%,
+                rgba(255, 255, 255, 0.4) 45%,
+                transparent 100%
+            ),
+        radial-gradient(
+            circle 2px at 13% 38%,
+            rgba(180, 235, 255, 0.45) 0%,
+            rgba(180, 235, 255, 0.45) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 24% 30%,
+            rgba(255, 255, 255, 0.38) 0%,
+            rgba(255, 255, 255, 0.38) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 33% 40%,
+            rgba(170, 230, 255, 0.55) 0%,
+            rgba(170, 230, 255, 0.55) 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 44% 34%,
+            rgba(255, 255, 255, 0.38) 0%,
+            rgba(255, 255, 255, 0.38) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 53% 42%,
+            rgba(255, 255, 255, 0.35) 0%,
+            rgba(255, 255, 255, 0.35) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 62% 31%,
+            rgba(180, 240, 255, 0.45) 0%,
+            rgba(180, 240, 255, 0.45) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 3px at 69% 38%,
+            white 0%,
+            white 42%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 77% 29%,
+            rgba(255, 255, 255, 0.4) 0%,
+            rgba(255, 255, 255, 0.4) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 85% 36%,
+            rgba(180, 235, 255, 0.42) 0%,
+            rgba(180, 235, 255, 0.42) 45%,
+            transparent 100%
+        ),
+        radial-gradient(
+            circle 2px at 96% 32%,
+            rgba(255, 255, 255, 0.38) 0%,
+            rgba(255, 255, 255, 0.38) 45%,
+            transparent 100%
+        ),
+        /* ── Ambient glow + horizon line ── */
+        radial-gradient(
+                ellipse 70% 55% at 50% 48%,
+                rgba(0, 120, 200, 0.18) 0%,
+                transparent 68%
+            ),
+        radial-gradient(
+            ellipse 100% 4% at 50% 50%,
+            rgba(0, 245, 255, 0.22) 0%,
+            transparent 100%
         );
     pointer-events: none;
     z-index: 0;
 }
 
+/* 3-D perspective grid floor — recedes to vanishing point */
+body::after {
+    content: "";
+    position: fixed;
+    left: -100%;
+    width: 300%;
+    height: 62%;
+    bottom: -8%;
+    background-image:
+        linear-gradient(rgba(0, 245, 255, 0.28) 1px, transparent 1px),
+        linear-gradient(90deg, rgba(0, 245, 255, 0.16) 1px, transparent 1px);
+    background-size: 80px 40px;
+    transform: perspective(520px) rotateX(75deg);
+    transform-origin: center 0%;
+    -webkit-mask-image: linear-gradient(
+        to bottom,
+        transparent 0%,
+        rgba(0, 0, 0, 0.55) 22%,
+        black 50%
+    );
+    mask-image: linear-gradient(
+        to bottom,
+        transparent 0%,
+        rgba(0, 0, 0, 0.55) 22%,
+        black 50%
+    );
+    pointer-events: none;
+    z-index: 0;
+}
+
 /* ─── AUTH CARD ─────────────────────────────────────────────── */
 .auth-card {
     position: relative;
@@ -74,20 +316,22 @@ body::before {
     width: min(440px, calc(100vw - 24px));
     background: var(--bg-card);
     border: 1px solid var(--border-hi);
-    border-radius: 18px;
+    border-radius: var(--radius);
     box-shadow: var(--shadow);
     overflow: hidden;
-    animation: fadeUp 0.3s ease both;
+    animation: fadeUp 1s cubic-bezier(0.65, 0, 0.85, 0.05) 1 both;
 }
 
 @keyframes fadeUp {
     from {
         opacity: 0;
-        transform: translateY(18px);
+        transform: scale(0);
+        filter: blur(6px);
     }
     to {
         opacity: 1;
-        transform: translateY(0);
+        transform: scale(1);
+        filter: blur(0);
     }
 }
 
@@ -202,10 +446,10 @@ body::before {
     height: min(780px, calc(100vh - 16px));
     background: var(--bg-card);
     border: 1px solid var(--border-hi);
-    border-radius: 18px;
+    border-radius: var(--radius);
     box-shadow: var(--shadow);
     overflow: hidden;
-    animation: fadeUp 0.25s ease both;
+    animation: fadeUp 1s cubic-bezier(0.65, 0, 0.85, 0.05) 1 both;
 }
 
 /* App header */
@@ -215,10 +459,10 @@ body::before {
     justify-content: space-between;
     height: 54px;
     padding: 0 22px;
-    border-bottom: 1px solid var(--border);
+    border-bottom: 1px solid var(--border-hi);
     background: linear-gradient(
         90deg,
-        rgba(79, 142, 247, 0.06) 0%,
+        rgba(0, 245, 255, 0.08) 0%,
         transparent 60%
     );
     flex-shrink: 0;
@@ -232,7 +476,8 @@ body::before {
     font-weight: 700;
     font-size: 15px;
     color: var(--accent);
-    letter-spacing: 0.2px;
+    letter-spacing: 1.5px;
+    text-shadow: 0 0 14px rgba(0, 245, 255, 0.85);
     flex-shrink: 0;
 }
 
@@ -892,6 +1137,8 @@ body::before {
     transition:
         opacity 0.15s,
         background 0.15s,
+        box-shadow 0.15s,
+        border-color 0.15s,
         transform 0.1s;
     flex-shrink: 0;
 }
@@ -910,8 +1157,21 @@ body::before {
 }
 
 .btn-primary {
-    background: var(--accent);
+    background: transparent;
     color: #fff;
+    border: 1px solid var(--accent);
+    box-shadow:
+        0 0 8px rgba(0, 245, 255, 0.35),
+        inset 0 0 8px rgba(0, 245, 255, 0.04);
+}
+
+.btn-primary:hover {
+    opacity: 1;
+    background: rgba(0, 245, 255, 0.08);
+    border-color: var(--accent);
+    box-shadow:
+        0 0 18px rgba(0, 245, 255, 0.55),
+        inset 0 0 12px rgba(0, 245, 255, 0.07);
 }
 .btn-danger {
     background: var(--danger);
@@ -1209,9 +1469,10 @@ body::before {
 
 /* ─── Talk to Us panel ──────────────────────────────────────────── */
 .talk-wrap {
-    border-top: 2px solid var(--accent);
+    border-top: 1px solid var(--border-hi);
     flex-shrink: 0;
     background: var(--bg-inner);
+    box-shadow: 0 -4px 20px rgba(0, 245, 255, 0.08);
 }
 .talk-toggle {
     width: 100%;
@@ -1221,7 +1482,7 @@ body::before {
     padding: 9px 22px;
     background: linear-gradient(
         90deg,
-        rgba(79, 142, 247, 0.08) 0%,
+        rgba(0, 245, 255, 0.08) 0%,
         transparent 70%
     );
     border: none;
@@ -1237,7 +1498,7 @@ body::before {
 .talk-toggle:hover {
     background: linear-gradient(
         90deg,
-        rgba(79, 142, 247, 0.16) 0%,
+        rgba(0, 245, 255, 0.16) 0%,
         transparent 70%
     );
     color: var(--text);
@@ -1246,7 +1507,7 @@ body::before {
     color: var(--text);
     background: linear-gradient(
         90deg,
-        rgba(79, 142, 247, 0.14) 0%,
+        rgba(0, 245, 255, 0.14) 0%,
         transparent 70%
     );
 }
@@ -1444,8 +1705,8 @@ body.auth-layout .pricing-badge {
     margin: 20px 24px 0;
     padding: 14px 20px;
     background: var(--accent-dim);
-    border: 1px solid rgba(79, 142, 247, 0.35);
-    border-radius: 12px;
+    border: 1px solid rgba(0, 245, 255, 0.35);
+    border-radius: var(--radius);
 }
 .pricing-amount {
     font-size: 22px;
@@ -1561,6 +1822,7 @@ body.auth-layout #signin-btn {
     width: min(1060px, calc(100vw - 16px));
     height: min(500px, calc(100vh - 360px));
     flex-shrink: 0;
+    animation: none; /* prevent double-play alongside auth-card */
 }
 
 #app-shell.demo-mode .app-header,
@@ -1624,17 +1886,17 @@ body.auth-layout #signin-btn {
 @keyframes shellEnter {
     from {
         opacity: 0;
-        transform: translateY(22px);
-        filter: blur(10px);
+        transform: scale(0);
+        filter: blur(6px);
     }
     to {
         opacity: 1;
-        transform: none;
-        filter: none;
+        transform: scale(1);
+        filter: blur(0);
     }
 }
 #app-shell.app-entering {
-    animation: shellEnter 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
+    animation: shellEnter 1s cubic-bezier(0.65, 0, 0.85, 0.05) 1 forwards;
 }
 
 /* On screens too narrow for the dual layout, fall back to single column */