fix: remove duplicate headers and unused theme toggle

- Providers now excludes login page from SiteHeader/SiteFooter
- Removed ThemeToggle from SiteHeader (not being used)
- Login page uses fixed viewport height to prevent scrolling
- DemoMode also uses fixed viewport height

src/app/login/LoginClient.tsx

@@ -66,10 +66,11 @@ function LoginForm() {
   }, [forgotEmail]);
 
   return (
-    <main className="min-h-screen flex flex-col relative overflow-hidden" style={{ backgroundColor: "#faf8f5" }}>
+    <main className="min-h-screen flex flex-col relative overflow-hidden" style={{ backgroundColor: "#faf8f5", height: "100vh" }}>
       {/* Google Fonts */}
       <style jsx global>{`
         @import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap");
+        html, body { overflow: hidden; }
       `}</style>
 
       {/* Organic background elements */}
@@ -343,7 +344,7 @@ function LoginForm() {
 // Demo mode wrapper
 function DemoMode() {
   return (
-    <main className="min-h-screen flex flex-col relative overflow-hidden" style={{ backgroundColor: "#faf8f5" }}>
+    <main className="min-h-screen flex flex-col relative overflow-hidden" style={{ backgroundColor: "#faf8f5", height: "100vh" }}>
       {/* Organic background elements */}
       <div className="pointer-events-none absolute inset-0 overflow-hidden" aria-hidden="true">
         <div className="absolute -top-32 -right-32 w-96 h-96 rounded-full opacity-20" style={{ background: "radial-gradient(circle at 30% 30%, #c97a3e20 0%, transparent 70%)", filter: "blur(40px)" }} />

src/components/Providers.tsx

@@ -13,6 +13,7 @@ export function Providers({ children }: { children: React.ReactNode }) {
   const pathname = usePathname();
   const isBrandRoute = pathname?.startsWith("/tuxedo") || pathname?.startsWith("/indian-river-direct");
   const isLandingPage = pathname === "/" || pathname === "/brands";
+  const isAuthPage = pathname === "/login" || pathname === "/admin/login";
   const [mounted, setMounted] = useState(false);
 
   useEffect(() => {
@@ -22,9 +23,9 @@ export function Providers({ children }: { children: React.ReactNode }) {
   return (
     <ThemeProvider attribute="class" defaultTheme="light" enableSystem={false} disableTransitionOnChange>
       <CartProvider>
-        {!isBrandRoute && !isLandingPage && <SiteHeader />}
+        {!isBrandRoute && !isLandingPage && !isAuthPage && <SiteHeader />}
         {mounted ? children : <div style={{ visibility: 'hidden' }}>{children}</div>}
-        {!isBrandRoute && !isLandingPage && <SiteFooter />}
+        {!isBrandRoute && !isLandingPage && !isAuthPage && <SiteFooter />}
         <CartToast />
         <CartRestoredToast />
       </CartProvider>

src/components/admin/GlassModal.tsx

@@ -33,56 +33,56 @@ export default function GlassModal({ title, titleIcon, subtitle, onClose, childr
 
   return (
     <div
-      className="fixed inset-0 z-50 flex items-center justify-center p-4"
+      className="fixed inset-0 z-50 flex items-center justify-center p-4 sm:p-6 md:p-8"
       onClick={handleBackdropClick}
       style={{ backgroundColor: "rgba(60, 56, 37, 0.5)" }}
     >
       {/* Modal card - solid white with shadow for high contrast */}
       <div
-        className={`relative w-full ${maxWidth} rounded-2xl bg-white shadow-[0_25px_50px_-12px_rgba(0,0,0,0.15)]`}
+        className={`relative w-full ${maxWidth} max-h-[calc(100vh-2rem)] sm:max-h-[calc(100vh-3rem)] md:max-h-[calc(100vh-4rem)] rounded-2xl bg-white shadow-[0_25px_50px_-12px_rgba(0,0,0,0.15)] flex flex-col`}
       >
         {/* Subtle top border accent */}
         <div className="absolute top-0 left-0 right-0 h-1 bg-gradient-to-r from-[var(--admin-accent)] to-[var(--admin-accent-hover)] rounded-t-2xl" />
 
         {/* Header */}
         <div 
-          className="flex items-center justify-between px-8 py-6"
+          className="flex items-center justify-between px-4 sm:px-6 md:px-8 py-4 sm:py-6 shrink-0"
           style={{ borderBottom: "1px solid var(--admin-border-light)" }}
         >
-          <div className="flex items-center gap-3">
+          <div className="flex items-center gap-2 sm:gap-3 min-w-0">
             {titleIcon && (
               <div 
-                className="flex h-10 w-10 items-center justify-center rounded-xl"
+                className="flex h-8 w-8 sm:h-10 sm:w-10 items-center justify-center rounded-xl shrink-0"
                 style={{ backgroundColor: "var(--admin-accent-light)" }}
               >
                 {titleIcon}
               </div>
             )}
-            <div>
+            <div className="min-w-0">
               <h2 
-                className="text-xl font-semibold text-[var(--admin-text-primary)]" 
+                className="text-lg sm:text-xl font-semibold text-[var(--admin-text-primary)] truncate" 
                 style={{ letterSpacing: "-0.02em" }}
               >
                 {title}
               </h2>
               {subtitle && (
-                <p className="mt-0.5 text-sm text-[var(--admin-text-muted)]">{subtitle}</p>
+                <p className="mt-0.5 text-xs sm:text-sm text-[var(--admin-text-muted)] hidden sm:block">{subtitle}</p>
               )}
             </div>
           </div>
           <button
             onClick={onClose}
-            className="flex h-9 w-9 items-center justify-center rounded-full transition-all duration-150"
+            className="flex h-8 w-8 sm:h-9 sm:w-9 items-center justify-center rounded-full transition-all duration-150 shrink-0 ml-2"
             style={{ backgroundColor: "var(--admin-bg-subtle)", color: "var(--admin-text-muted)" }}
           >
-            <svg className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
+            <svg className="h-4 w-4 sm:h-5 sm:w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
               <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
             </svg>
           </button>
         </div>
 
-        {/* Content */}
+        {/* Content - scrollable */}
-        <div className="relative px-8 py-8">
+        <div className="relative px-4 sm:px-6 md:px-8 py-4 sm:py-6 md:py-8 overflow-y-auto flex-1">
           {children}
         </div>
       </div>

src/components/layout/SiteHeader.tsx

@@ -2,7 +2,6 @@
 
 import Link from "next/link";
 import { usePathname } from "next/navigation";
-import ThemeToggle from "@/components/shared/ThemeToggle";
 
 const BRAND_NAMES: Record<string, string> = {
   tuxedo: "Tuxedo Corn",
@@ -98,9 +97,6 @@ export default function SiteHeader() {
               Admin
             </Link>
           )}
-
-          {/* Theme Toggle */}
-          <ThemeToggle />
         </nav>
       </div>
     </header>