diff --git a/app/globals.css b/app/globals.css
index 3305916c..eb3d7186 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -4,48 +4,48 @@
 
 @layer base {
   :root {
-    --background: 0 0% 100%;
-    --foreground: 240 10% 4%;
-    --card: 0 0% 98%;
-    --card-foreground: 240 10% 4%;
-    --popover: 0 0% 100%;
-    --popover-foreground: 240 10% 4%;
-    --primary: 239 84% 67%;
-    --primary-foreground: 0 0% 100%;
-    --secondary: 192 91% 43%;
-    --secondary-foreground: 0 0% 100%;
-    --muted: 240 5% 96%;
-    --muted-foreground: 240 4% 46%;
-    --accent: 240 5% 96%;
-    --accent-foreground: 240 10% 4%;
-    --destructive: 0 84% 60%;
-    --destructive-foreground: 0 0% 100%;
-    --border: 240 6% 90%;
-    --input: 240 6% 90%;
-    --ring: 239 84% 67%;
-    --radius: 0.5rem;
+    --radius: 0.65rem;
+    --background: oklch(1 0 0);
+    --foreground: oklch(0.141 0.005 285.823);
+    --card: oklch(1 0 0);
+    --card-foreground: oklch(0.141 0.005 285.823);
+    --popover: oklch(1 0 0);
+    --popover-foreground: oklch(0.141 0.005 285.823);
+    --primary: oklch(0.541 0.281 293.009);
+    --primary-foreground: oklch(0.969 0.016 293.756);
+    --secondary: oklch(0.967 0.001 286.375);
+    --secondary-foreground: oklch(0.21 0.006 285.885);
+    --muted: oklch(0.967 0.001 286.375);
+    --muted-foreground: oklch(0.552 0.016 285.938);
+    --accent: oklch(0.967 0.001 286.375);
+    --accent-foreground: oklch(0.21 0.006 285.885);
+    --destructive: oklch(0.577 0.245 27.325);
+    --destructive-foreground: oklch(1 0 0);
+    --border: oklch(0.92 0.004 286.32);
+    --input: oklch(0.92 0.004 286.32);
+    --ring: oklch(0.702 0.183 293.541);
   }
 
   .dark {
-    --background: 240 10% 4%;
-    --foreground: 240 5% 96%;
-    --card: 240 6% 10%;
-    --card-foreground: 240 5% 96%;
-    --popover: 240 6% 10%;
-    --popover-foreground: 240 5% 96%;
-    --primary: 239 84% 67%;
-    --primary-foreground: 0 0% 100%;
-    --secondary: 192 91% 43%;
-    --secondary-foreground: 0 0% 100%;
-    --muted: 240 4% 16%;
-    --muted-foreground: 240 5% 65%;
-    --accent: 240 4% 16%;
-    --accent-foreground: 240 5% 96%;
-    --destructive: 0 63% 31%;
-    --destructive-foreground: 0 0% 100%;
-    --border: 240 4% 16%;
-    --input: 240 4% 16%;
-    --ring: 239 84% 67%;
+    --background: oklch(0.141 0.005 285.823);
+    --foreground: oklch(0.985 0 0);
+    --card: oklch(0.21 0.006 285.885);
+    --card-foreground: oklch(0.985 0 0);
+    --popover: oklch(0.21 0.006 285.885);
+    --popover-foreground: oklch(0.985 0 0);
+    --primary: oklch(0.606 0.25 292.717);
+    --primary-foreground: oklch(0.969 0.016 293.756);
+    --secondary: oklch(0.274 0.006 286.033);
+    --secondary-foreground: oklch(0.985 0 0);
+    --muted: oklch(0.274 0.006 286.033);
+    --muted-foreground: oklch(0.705 0.015 286.067);
+    --accent: oklch(0.274 0.006 286.033);
+    --accent-foreground: oklch(0.985 0 0);
+    --destructive: oklch(0.704 0.191 22.216);
+    --destructive-foreground: oklch(0.985 0 0);
+    --border: oklch(1 0 0 / 10%);
+    --input: oklch(1 0 0 / 15%);
+    --ring: oklch(0.38 0.189 293.745);
   }
 
   * {
diff --git a/src/components/l4-proxy-hosts/L4HostDialogs.tsx b/src/components/l4-proxy-hosts/L4HostDialogs.tsx
index 3cfa030a..e6ebcc23 100644
--- a/src/components/l4-proxy-hosts/L4HostDialogs.tsx
+++ b/src/components/l4-proxy-hosts/L4HostDialogs.tsx
@@ -226,13 +226,13 @@ function L4HostForm({
         </Label>
         <Select
           name="proxy_protocol_version"
-          defaultValue={initialData?.proxy_protocol_version ?? ""}
+          defaultValue={initialData?.proxy_protocol_version ?? "__none__"}
         >
           <SelectTrigger id="proxy_protocol_version">
             <SelectValue placeholder="None" />
           </SelectTrigger>
           <SelectContent>
-            <SelectItem value="">None</SelectItem>
+            <SelectItem value="__none__">None</SelectItem>
             <SelectItem value="v1">v1</SelectItem>
             <SelectItem value="v2">v2</SelectItem>
           </SelectContent>
diff --git a/src/components/proxy-hosts/HostDialogs.tsx b/src/components/proxy-hosts/HostDialogs.tsx
index 9968bfba..cfd8998d 100644
--- a/src/components/proxy-hosts/HostDialogs.tsx
+++ b/src/components/proxy-hosts/HostDialogs.tsx
@@ -100,12 +100,12 @@ export function CreateHostDialog({
                 <UpstreamInput defaultUpstreams={initialData?.upstreams} />
                 <div>
                     <label className="text-sm font-medium mb-1 block">Certificate</label>
-                    <Select name="certificate_id" defaultValue={String(initialData?.certificate_id ?? "")}>
+                    <Select name="certificate_id" defaultValue={String(initialData?.certificate_id ?? "__none__")}>
                         <SelectTrigger>
                             <SelectValue placeholder="Managed by Caddy (Auto)" />
                         </SelectTrigger>
                         <SelectContent>
-                            <SelectItem value="">Managed by Caddy (Auto)</SelectItem>
+                            <SelectItem value="__none__">Managed by Caddy (Auto)</SelectItem>
                             {certificates.map((cert) => (
                                 <SelectItem key={cert.id} value={String(cert.id)}>
                                     {cert.name}
@@ -116,12 +116,12 @@ export function CreateHostDialog({
                 </div>
                 <div>
                     <label className="text-sm font-medium mb-1 block">Access List</label>
-                    <Select name="access_list_id" defaultValue={String(initialData?.access_list_id ?? "")}>
+                    <Select name="access_list_id" defaultValue={String(initialData?.access_list_id ?? "__none__")}>
                         <SelectTrigger>
                             <SelectValue placeholder="None" />
                         </SelectTrigger>
                         <SelectContent>
-                            <SelectItem value="">None</SelectItem>
+                            <SelectItem value="__none__">None</SelectItem>
                             {accessLists.map((list) => (
                                 <SelectItem key={list.id} value={String(list.id)}>
                                     {list.name}
@@ -229,12 +229,12 @@ export function EditHostDialog({
                 <UpstreamInput defaultUpstreams={host.upstreams} />
                 <div>
                     <label className="text-sm font-medium mb-1 block">Certificate</label>
-                    <Select name="certificate_id" defaultValue={String(host.certificate_id ?? "")}>
+                    <Select name="certificate_id" defaultValue={String(host.certificate_id ?? "__none__")}>
                         <SelectTrigger>
                             <SelectValue placeholder="Managed by Caddy (Auto)" />
                         </SelectTrigger>
                         <SelectContent>
-                            <SelectItem value="">Managed by Caddy (Auto)</SelectItem>
+                            <SelectItem value="__none__">Managed by Caddy (Auto)</SelectItem>
                             {certificates.map((cert) => (
                                 <SelectItem key={cert.id} value={String(cert.id)}>
                                     {cert.name}
@@ -245,12 +245,12 @@ export function EditHostDialog({
                 </div>
                 <div>
                     <label className="text-sm font-medium mb-1 block">Access List</label>
-                    <Select name="access_list_id" defaultValue={String(host.access_list_id ?? "")}>
+                    <Select name="access_list_id" defaultValue={String(host.access_list_id ?? "__none__")}>
                         <SelectTrigger>
                             <SelectValue placeholder="None" />
                         </SelectTrigger>
                         <SelectContent>
-                            <SelectItem value="">None</SelectItem>
+                            <SelectItem value="__none__">None</SelectItem>
                             {accessLists.map((list) => (
                                 <SelectItem key={list.id} value={String(list.id)}>
                                     {list.name}
diff --git a/tailwind.config.ts b/tailwind.config.ts
index 46a9ec2f..0f02d486 100644
--- a/tailwind.config.ts
+++ b/tailwind.config.ts
@@ -10,38 +10,38 @@ const config: Config = {
   theme: {
   	extend: {
   		colors: {
-  			border: 'hsl(var(--border))',
-  			input: 'hsl(var(--input))',
-  			ring: 'hsl(var(--ring))',
-  			background: 'hsl(var(--background))',
-  			foreground: 'hsl(var(--foreground))',
+  			border: 'var(--border)',
+  			input: 'var(--input)',
+  			ring: 'var(--ring)',
+  			background: 'var(--background)',
+  			foreground: 'var(--foreground)',
   			primary: {
-  				DEFAULT: 'hsl(var(--primary))',
-  				foreground: 'hsl(var(--primary-foreground))'
+  				DEFAULT: 'var(--primary)',
+  				foreground: 'var(--primary-foreground)'
   			},
   			secondary: {
-  				DEFAULT: 'hsl(var(--secondary))',
-  				foreground: 'hsl(var(--secondary-foreground))'
+  				DEFAULT: 'var(--secondary)',
+  				foreground: 'var(--secondary-foreground)'
   			},
   			destructive: {
-  				DEFAULT: 'hsl(var(--destructive))',
-  				foreground: 'hsl(var(--destructive-foreground))'
+  				DEFAULT: 'var(--destructive)',
+  				foreground: 'var(--destructive-foreground)'
   			},
   			muted: {
-  				DEFAULT: 'hsl(var(--muted))',
-  				foreground: 'hsl(var(--muted-foreground))'
+  				DEFAULT: 'var(--muted)',
+  				foreground: 'var(--muted-foreground)'
   			},
   			accent: {
-  				DEFAULT: 'hsl(var(--accent))',
-  				foreground: 'hsl(var(--accent-foreground))'
+  				DEFAULT: 'var(--accent)',
+  				foreground: 'var(--accent-foreground)'
   			},
   			card: {
-  				DEFAULT: 'hsl(var(--card))',
-  				foreground: 'hsl(var(--card-foreground))'
+  				DEFAULT: 'var(--card)',
+  				foreground: 'var(--card-foreground)'
   			},
   			popover: {
-  				DEFAULT: 'hsl(var(--popover))',
-  				foreground: 'hsl(var(--popover-foreground))'
+  				DEFAULT: 'var(--popover)',
+  				foreground: 'var(--popover-foreground)'
   			}
   		},
   		borderRadius: {