diff --git a/src/modules/estimateWizard/CustomerEstimateWizard.jsx b/src/modules/estimateWizard/CustomerEstimateWizard.jsx
index dd98808..faa59c6 100644
--- a/src/modules/estimateWizard/CustomerEstimateWizard.jsx
+++ b/src/modules/estimateWizard/CustomerEstimateWizard.jsx
@@ -12,7 +12,7 @@ import WizardShell from './components/WizardShell';
 const CompletionScreen = () => {
     const { inputs, reset } = useEstimateWizard();
     return (
-        <div className="min-h-screen w-full bg-zinc-50 dark:bg-[#09090b] flex items-center justify-center px-4">
+        <div className="min-h-[100dvh] w-full bg-zinc-50 dark:bg-[#09090b] flex items-center justify-center px-4 py-10">
             <div className="max-w-md text-center">
                 <CheckCircle2 size={56} className="text-green-500 mx-auto mb-4" />
                 <h1 className="text-2xl font-bold text-zinc-900 dark:text-white">
@@ -34,7 +34,7 @@ const CompletionScreen = () => {
 };
 
 const FeatureDisabledScreen = () => (
-    <div className="min-h-screen w-full bg-zinc-50 dark:bg-[#09090b] flex items-center justify-center px-4">
+    <div className="min-h-[100dvh] w-full bg-zinc-50 dark:bg-[#09090b] flex items-center justify-center px-4 py-10">
         <div className="max-w-md text-center">
             <h1 className="text-xl font-bold text-zinc-900 dark:text-white">Estimate wizard unavailable</h1>
             <p className="text-zinc-500 dark:text-zinc-400 mt-2">
diff --git a/src/modules/estimateWizard/components/WizardShell.jsx b/src/modules/estimateWizard/components/WizardShell.jsx
index 3d0d76f..89a5e46 100644
--- a/src/modules/estimateWizard/components/WizardShell.jsx
+++ b/src/modules/estimateWizard/components/WizardShell.jsx
@@ -102,14 +102,14 @@ const WizardShell = () => {
     };
 
     return (
-        <div className="min-h-screen w-full bg-zinc-50 dark:bg-[#09090b] flex flex-col">
+        <div className="min-h-[100dvh] w-full bg-zinc-50 dark:bg-[#09090b] flex flex-col">
             {/* Top bar */}
             <header className="w-full border-b border-zinc-200 dark:border-white/5 bg-white/70 dark:bg-zinc-900/60 backdrop-blur-md">
-                <div className="max-w-2xl mx-auto px-4 py-4">
-                    <div className="flex items-center justify-between mb-3">
-                        <span className="font-bold tracking-tight text-zinc-900 dark:text-white">
+                <div className="max-w-2xl mx-auto px-4 py-3 sm:py-4">
+                    <div className="flex items-center justify-between gap-3 mb-3">
+                        <span className="font-bold tracking-tight text-zinc-900 dark:text-white truncate">
                             LynkedUp<span className="text-amber-500">Pro</span>
-                            <span className="ml-2 text-xs font-medium text-zinc-400">Roof Options</span>
+                            <span className="ml-2 text-xs font-medium text-zinc-400 hidden xs:inline">Roof Options</span>
                         </span>
                         <button
                             onClick={reset}
@@ -134,7 +134,7 @@ const WizardShell = () => {
 
             {/* Body */}
             <main className="flex-1 w-full">
-                <div className="max-w-2xl mx-auto px-4 py-8">
+                <div className="max-w-2xl mx-auto px-4 py-6 sm:py-8">
                     {/* key forces remount per step → re-triggers the enter animation */}
                     <div key={step.id} className="animate-in fade-in slide-in-from-right-4 duration-300">
                         <h1 className="text-2xl md:text-3xl font-bold text-zinc-900 dark:text-white tracking-tight">
@@ -148,22 +148,26 @@ const WizardShell = () => {
                 </div>
             </main>
 
-            {/* Footer nav — one primary CTA */}
-            <footer className="sticky bottom-0 w-full border-t border-zinc-200 dark:border-white/5 bg-white/80 dark:bg-zinc-900/70 backdrop-blur-md">
-                <div className="max-w-2xl mx-auto px-4 py-3 flex items-center gap-3">
+            {/* Footer nav — one primary CTA. Respects the mobile safe-area inset so the
+                CTA clears the iPhone home indicator. */}
+            <footer
+                className="sticky bottom-0 w-full border-t border-zinc-200 dark:border-white/5 bg-white/80 dark:bg-zinc-900/70 backdrop-blur-md"
+                style={{ paddingBottom: 'env(safe-area-inset-bottom)' }}
+            >
+                <div className="max-w-2xl mx-auto px-4 py-3 flex items-center gap-2 sm:gap-3">
                     {stepIndex > 0 && (
                         <button
                             onClick={back}
-                            className="rounded-xl border border-zinc-200 dark:border-white/10 px-4 py-2.5 text-sm font-medium text-zinc-600 dark:text-zinc-300 hover:border-amber-400 flex items-center gap-1.5"
+                            className="shrink-0 rounded-xl border border-zinc-200 dark:border-white/10 px-3 sm:px-4 py-2.5 text-sm font-medium text-zinc-600 dark:text-zinc-300 hover:border-amber-400 flex items-center gap-1.5"
                         >
-                            <ArrowLeft size={16} /> Back
+                            <ArrowLeft size={16} /> <span className="hidden xs:inline">Back</span>
                         </button>
                     )}
 
                     {step.skippable && !isLast && (
                         <button
                             onClick={next}
-                            className="text-sm font-medium text-zinc-400 hover:text-amber-500 px-2"
+                            className="shrink-0 text-sm font-medium text-zinc-400 hover:text-amber-500 px-1.5 sm:px-2 py-2.5"
                         >
                             Skip
                         </button>
@@ -172,13 +176,13 @@ const WizardShell = () => {
                     <button
                         onClick={handleContinue}
                         disabled={!advance}
-                        className={`ml-auto rounded-xl px-6 py-2.5 text-sm font-semibold flex items-center gap-1.5 transition-all
+                        className={`ml-auto min-w-0 rounded-xl px-5 sm:px-6 py-2.5 text-sm font-semibold flex items-center justify-center gap-1.5 whitespace-nowrap transition-all
                             ${advance
                                 ? 'bg-gradient-to-r from-amber-400 to-orange-500 text-white shadow-lg shadow-amber-500/25 hover:shadow-amber-500/40'
                                 : 'bg-zinc-200 dark:bg-zinc-800 text-zinc-400 cursor-not-allowed'}`}
                     >
                         {isLast ? 'Finish' : stepIndex === 0 ? 'Start estimate' : 'Continue'}
-                        {!isLast && <ArrowRight size={16} />}
+                        {!isLast && <ArrowRight size={16} className="shrink-0" />}
                     </button>
                 </div>
             </footer>
diff --git a/src/modules/estimateWizard/components/steps/AddonsStep.jsx b/src/modules/estimateWizard/components/steps/AddonsStep.jsx
index 2ccffd9..e0f456b 100644
--- a/src/modules/estimateWizard/components/steps/AddonsStep.jsx
+++ b/src/modules/estimateWizard/components/steps/AddonsStep.jsx
@@ -52,8 +52,10 @@ const AddonsStep = () => {
                 triggers={triggers}
             />
 
-            {/* Running total for the selected package */}
-            <div className="sticky bottom-0 rounded-2xl border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900 p-4 shadow-sm">
+            {/* Running total for the selected package. Not sticky — the wizard's
+                footer CTA is already pinned, and two stacked sticky bars overlap on
+                mobile. */}
+            <div className="rounded-2xl border border-zinc-200 dark:border-white/10 bg-white dark:bg-zinc-900 p-4 shadow-sm">
                 <div className="flex items-center justify-between text-sm text-zinc-500 dark:text-zinc-400">
                     <span>{pkg?.name} (base estimate)</span>
                     <span>{formatUSD(base)}</span>
diff --git a/tailwind.config.js b/tailwind.config.js
index 0d36508..14d5911 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -7,6 +7,12 @@ export default {
   darkMode: 'class',
   theme: {
     extend: {
+      // Extra-small breakpoint for fine mobile-first control (additive — does not
+      // affect the default sm/md/lg/xl screens).
+      screens: {
+        xs: '400px',
+      },
+
       // --- Typography ---
       fontFamily: {
         display: ['"Instrument Serif"', 'Georgia', 'serif'],