diff --git a/frontend/css/style.css b/frontend/css/style.css
index b75d4b6..2702ca4 100644
--- a/frontend/css/style.css
+++ b/frontend/css/style.css
@@ -28,53 +28,59 @@
     user-select: none;
 }
 
-body {
+html, body {
+    width: 100%;
+    min-height: 100%;
     background-color: var(--bg-main);
     color: var(--text-primary);
     font-family: var(--font-ui);
     display: flex;
     justify-content: center;
-    align-items: center;
-    min-height: 100vh;
     overflow-x: hidden;
 }
 
-/* Burner Phone Container (Mobile viewport lock) */
-#burner-device {
+/* App Main Container: Clean, native-feeling layout on both mobile & desktop */
+#app-container {
     width: 100%;
-    max-width: 480px;
-    height: 100vh;
-    max-height: 940px;
+    max-width: 640px; /* Comfortable max width on larger screens without feeling like a claustrophobic fake phone */
+    min-height: 100vh;
     background: var(--bg-main);
     display: flex;
     flex-direction: column;
     position: relative;
-    border: 1px solid var(--border-color);
-    box-shadow: 0 0 40px rgba(0,0,0,0.85);
-    overflow: hidden;
+    padding-bottom: 84px; /* Space for sticky bottom tab bar */
 }
 
-@media (min-width: 520px) {
-    #burner-device {
-        border-radius: 28px;
-        margin: 20px 0;
-        border: 2px solid #2a3440;
+@media (min-width: 680px) {
+    #app-container {
+        border-left: 1px solid var(--border-color);
+        border-right: 1px solid var(--border-color);
     }
 }
 
-/* System Status Bar (Top) */
-#system-bar {
-    background: var(--bg-header);
+/* Sticky Top Navigation & HUD Header */
+#sticky-header {
+    position: sticky;
+    top: 0;
+    left: 0;
+    right: 0;
+    z-index: 40;
+    background: rgba(11, 14, 18, 0.96);
+    backdrop-filter: blur(10px);
     border-bottom: 1px solid var(--border-color);
+    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
+}
+
+/* Status / Top Brand Bar */
+#system-bar {
     padding: 6px 14px;
     display: flex;
     justify-content: space-between;
     align-items: center;
     font-family: var(--font-mono);
-    font-size: 0.75rem;
+    font-size: 0.72rem;
     color: var(--text-secondary);
-    letter-spacing: 0.5px;
-    z-index: 20;
+    border-bottom: 1px solid rgba(36, 45, 54, 0.5);
 }
 
 .status-left, .status-right {
@@ -83,6 +89,15 @@ body {
     gap: 8px;
 }
 
+.brand-tag {
+    font-weight: 800;
+    letter-spacing: 1px;
+    color: var(--brand-gold);
+    display: inline-flex;
+    align-items: center;
+    gap: 4px;
+}
+
 .secure-indicator {
     display: inline-flex;
     align-items: center;
@@ -107,26 +122,23 @@ body {
 
 /* Hero Financial HUD */
 #hud-summary {
-    background: linear-gradient(180deg, #12171e 0%, #0d1117 100%);
-    border-bottom: 1px solid var(--border-color);
-    padding: 12px 16px;
+    padding: 10px 14px;
     display: flex;
     justify-content: space-between;
     align-items: flex-end;
-    position: relative;
 }
 
 .hud-title {
     font-family: var(--font-mono);
-    font-size: 0.7rem;
+    font-size: 0.68rem;
     text-transform: uppercase;
     color: var(--text-secondary);
-    letter-spacing: 1px;
+    letter-spacing: 0.8px;
 }
 
 .hud-cash-val {
     font-family: var(--font-mono);
-    font-size: 1.6rem;
+    font-size: 1.55rem;
     font-weight: 800;
     color: var(--brand-gold);
     text-shadow: 0 0 10px rgba(234, 179, 8, 0.2);
@@ -135,7 +147,7 @@ body {
 
 .hud-rate-val {
     font-family: var(--font-mono);
-    font-size: 0.8rem;
+    font-size: 0.78rem;
     color: var(--neon-green);
     margin-top: 2px;
 }
@@ -149,7 +161,7 @@ body {
 
 .bonds-val {
     font-family: var(--font-mono);
-    font-size: 1.1rem;
+    font-size: 1.05rem;
     font-weight: bold;
     color: var(--neon-cyan);
     display: flex;
@@ -160,8 +172,7 @@ body {
 /* Police Heat Bar */
 #heat-container {
     background: #090c0f;
-    padding: 4px 16px 8px;
-    border-bottom: 1px solid var(--border-color);
+    padding: 4px 14px 6px;
     display: flex;
     flex-direction: column;
     gap: 3px;
@@ -177,7 +188,7 @@ body {
 
 .heat-bar-track {
     width: 100%;
-    height: 6px;
+    height: 5px;
     background: #1c232b;
     border-radius: 3px;
     overflow: hidden;
@@ -193,30 +204,30 @@ body {
 /* Main Viewport Content */
 #main-viewport {
     flex: 1;
-    overflow-y: auto;
-    overflow-x: hidden;
-    padding: 14px;
+    padding: 12px 14px;
     display: flex;
     flex-direction: column;
     gap: 12px;
-    padding-bottom: 90px; /* Space for bottom nav */
 }
 
-/* Bottom Tab Navigation Bar */
+/* Bottom Tab Navigation Bar - Fixed at bottom of screen */
 #bottom-nav {
-    position: absolute;
+    position: fixed;
     bottom: 0;
-    left: 0;
-    right: 0;
-    height: 70px;
-    background: rgba(11, 14, 18, 0.95);
-    backdrop-filter: blur(8px);
+    left: 50%;
+    transform: translateX(-50%);
+    width: 100%;
+    max-width: 640px;
+    height: 68px;
+    background: rgba(11, 14, 18, 0.97);
+    backdrop-filter: blur(12px);
     border-top: 1px solid var(--border-color);
     display: flex;
     justify-content: space-around;
     align-items: center;
-    z-index: 30;
-    padding-bottom: 6px;
+    z-index: 50;
+    padding-bottom: env(safe-area-inset-bottom, 4px);
+    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.5);
 }
 
 .nav-tab {
@@ -230,14 +241,14 @@ body {
     background: none;
     border: none;
     cursor: pointer;
-    font-size: 0.7rem;
+    font-size: 0.72rem;
     font-family: var(--font-mono);
     padding: 8px 0;
     transition: color 0.15s, transform 0.1s;
 }
 
 .nav-tab:active {
-    transform: scale(0.94);
+    transform: scale(0.92);
 }
 
 .nav-tab.active {
@@ -249,7 +260,7 @@ body {
 }
 
 .nav-tab iconify-icon {
-    font-size: 1.45rem;
+    font-size: 1.5rem;
 }
 
 /* Card Components */
@@ -260,7 +271,7 @@ body {
     padding: 12px 14px;
     position: relative;
     overflow: hidden;
-    transition: border-color 0.2s;
+    transition: border-color 0.2s, background-color 0.2s;
 }
 
 .card:hover {
@@ -277,26 +288,27 @@ body {
 .card-title-group {
     display: flex;
     align-items: center;
-    gap: 8px;
+    gap: 10px;
 }
 
 .drug-icon-box {
-    width: 36px;
-    height: 36px;
+    width: 38px;
+    height: 38px;
     border-radius: 8px;
     background: var(--bg-card-sub);
     display: flex;
     align-items: center;
     justify-content: center;
     border: 1px solid var(--border-color);
+    flex-shrink: 0;
 }
 
 .drug-icon-box iconify-icon {
-    font-size: 1.5rem;
+    font-size: 1.55rem;
 }
 
 .card-title {
-    font-size: 0.95rem;
+    font-size: 0.98rem;
     font-weight: 700;
     letter-spacing: 0.3px;
 }
@@ -329,7 +341,7 @@ body {
     color: var(--text-primary);
 }
 
-/* Buttons */
+/* Touch-Optimized Action Buttons */
 .btn-grid-actions {
     display: grid;
     grid-template-columns: 1fr 1fr 1fr;
@@ -344,13 +356,13 @@ body {
 }
 
 .btn-tactical {
-    background: #192028;
+    background: #181f26;
     color: var(--text-primary);
     border: 1px solid #2d3844;
     border-radius: 8px;
-    padding: 8px 4px;
+    padding: 9px 4px;
     font-family: var(--font-mono);
-    font-size: 0.72rem;
+    font-size: 0.74rem;
     font-weight: 600;
     cursor: pointer;
     display: flex;
@@ -358,12 +370,13 @@ body {
     align-items: center;
     justify-content: center;
     gap: 2px;
-    transition: background 0.15s, border-color 0.15s, transform 0.05s;
+    transition: background 0.12s, border-color 0.12s, transform 0.05s;
     text-align: center;
+    min-height: 48px; /* High tactile accessibility for thumbs */
 }
 
 .btn-tactical:active:not(:disabled) {
-    transform: scale(0.96);
+    transform: scale(0.95);
     background: #25313d;
 }
 
@@ -379,18 +392,18 @@ body {
 }
 
 .btn-primary-action {
-    background: #1b2e21;
-    border-color: #2e593b;
+    background: #172c1f;
+    border-color: #2b5637;
     color: #4ade80;
 }
 
 .btn-primary-action:hover:not(:disabled) {
-    background: #24422e;
+    background: #203f2c;
 }
 
 .btn-sell-action {
-    background: #2d2613;
-    border-color: #63501a;
+    background: #2b2310;
+    border-color: #5c4b1a;
     color: #facc15;
 }
 
@@ -406,17 +419,17 @@ body {
     align-items: center;
     justify-content: center;
     gap: 10px;
-    padding: 20px 0;
+    padding: 16px 0;
 }
 
 .btn-unlock {
     background: #201a08;
     border: 1px solid var(--brand-gold);
     color: var(--brand-gold);
-    padding: 10px 18px;
+    padding: 11px 20px;
     border-radius: 8px;
     font-family: var(--font-mono);
-    font-size: 0.85rem;
+    font-size: 0.86rem;
     font-weight: bold;
     cursor: pointer;
     display: flex;
@@ -447,7 +460,7 @@ body {
     border: 2px solid var(--border-accent);
     border-radius: 16px;
     width: 100%;
-    max-width: 380px;
+    max-width: 400px;
     padding: 22px;
     display: flex;
     flex-direction: column;
@@ -507,10 +520,12 @@ body {
 
 /* Toast Messages */
 #toast-container {
-    position: absolute;
-    top: 60px;
-    left: 14px;
-    right: 14px;
+    position: fixed;
+    top: 76px;
+    left: 50%;
+    transform: translateX(-50%);
+    width: 90%;
+    max-width: 580px;
     z-index: 80;
     display: flex;
     flex-direction: column;
@@ -519,16 +534,16 @@ body {
 }
 
 .toast {
-    background: rgba(16, 21, 28, 0.95);
+    background: rgba(16, 21, 28, 0.96);
     border: 1px solid var(--border-accent);
     border-left: 4px solid var(--neon-green);
     border-radius: 8px;
-    padding: 8px 12px;
+    padding: 9px 12px;
     font-size: 0.8rem;
     font-family: var(--font-mono);
     color: var(--text-primary);
-    box-shadow: 0 4px 14px rgba(0,0,0,0.5);
-    animation: slideDown 0.3s ease;
+    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
+    animation: slideDown 0.25s ease;
 }
 
 .toast.danger {
diff --git a/frontend/index.html b/frontend/index.html
index 1e2a1cb..8cc3ece 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -2,8 +2,8 @@
 <html lang="en">
 <head>
     <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
-    <title>EL PURO - SilkNet OS</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover">
+    <title>EL PURO</title>
     <!-- Fonts -->
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
@@ -14,59 +14,64 @@
 </head>
 <body>
 
-<div id="burner-device">
+<div id="app-container">
 
-    <!-- Top Status Bar -->
-    <div id="system-bar">
-        <div class="status-left">
-            <span class="secure-indicator">
-                <span class="secure-dot"></span> SECURE
-            </span>
-            <span id="user-badge" style="cursor: pointer;">[ANON]</span>
-        </div>
-        <div class="status-right">
-            <span id="system-clock">15:00</span>
-            <iconify-icon icon="lucide:battery-medium"></iconify-icon>
-        </div>
-    </div>
-
-    <!-- HUD Summary (Cash, Income, Clean Bonds) -->
-    <div id="hud-summary">
-        <div>
-            <div class="hud-title">Dirty Cash</div>
-            <div class="hud-cash-val">$<span id="hud-cash">0.00</span></div>
-            <div class="hud-rate-val">+$<span id="hud-rate">0.00</span>/s</div>
-        </div>
-        <div class="hud-bonds">
-            <div class="hud-title">Clean Bonds</div>
-            <div class="bonds-val">
-                <iconify-icon icon="game-icons:tied-scroll"></iconify-icon>
-                <span id="hud-bonds">0</span>
+    <!-- Sticky Header (Status bar + Financial HUD + Heat Bar) -->
+    <header id="sticky-header">
+        <!-- Top Status Bar -->
+        <div id="system-bar">
+            <div class="status-left">
+                <span class="brand-tag">
+                    <iconify-icon icon="game-icons:flasks"></iconify-icon> EL PURO
+                </span>
+                <span class="secure-indicator">
+                    <span class="secure-dot"></span> SECURE
+                </span>
+            </div>
+            <div class="status-right">
+                <span id="user-badge" style="cursor: pointer; text-decoration: underline;">[ANON]</span>
+                <span id="system-clock">15:00</span>
             </div>
-            <div class="hud-rate-val" style="color: var(--neon-cyan);">+<span id="hud-multiplier">0</span>% Boost</div>
         </div>
-    </div>
 
-    <!-- Police Heat Bar -->
-    <div id="heat-container">
-        <div class="heat-label-row">
-            <span>POLICE HEAT</span>
-            <span id="heat-pct">0%</span>
+        <!-- HUD Summary (Cash, Income, Clean Bonds) -->
+        <div id="hud-summary">
+            <div>
+                <div class="hud-title">Dirty Cash</div>
+                <div class="hud-cash-val">$<span id="hud-cash">0.00</span></div>
+                <div class="hud-rate-val">+$<span id="hud-rate">0.00</span>/s</div>
+            </div>
+            <div class="hud-bonds">
+                <div class="hud-title">Clean Bonds</div>
+                <div class="bonds-val">
+                    <iconify-icon icon="game-icons:tied-scroll"></iconify-icon>
+                    <span id="hud-bonds">0</span>
+                </div>
+                <div class="hud-rate-val" style="color: var(--neon-cyan);">+<span id="hud-multiplier">0</span>% Boost</div>
+            </div>
         </div>
-        <div class="heat-bar-track">
-            <div id="heat-bar-fill"></div>
+
+        <!-- Police Heat Bar -->
+        <div id="heat-container">
+            <div class="heat-label-row">
+                <span>POLICE HEAT</span>
+                <span id="heat-pct">0%</span>
+            </div>
+            <div class="heat-bar-track">
+                <div id="heat-bar-fill"></div>
+            </div>
         </div>
-    </div>
+    </header>
 
     <!-- Toast Notifications Container -->
     <div id="toast-container"></div>
 
     <!-- Main Viewport with Dynamic Views -->
     <main id="main-viewport">
-        <!-- Views will be dynamically injected / rendered here -->
+        <!-- Views are rendered dynamically by game.js -->
     </main>
 
-    <!-- Bottom Navigation Bar -->
+    <!-- Bottom Navigation Bar (Fixed for quick thumb access) -->
     <nav id="bottom-nav">
         <button class="nav-tab active" data-tab="lab">
             <iconify-icon icon="game-icons:flasks"></iconify-icon>