diff --git a/src/web/src/components/ui/card.tsx b/src/web/src/components/ui/card.tsx
index c5d18d4..3f2d85d 100644
--- a/src/web/src/components/ui/card.tsx
+++ b/src/web/src/components/ui/card.tsx
@@ -1,20 +1,34 @@
 import * as React from 'react'
+import { cva, type VariantProps } from 'class-variance-authority'
 
 import { cn } from '@/lib/utils'
 
-const Card = React.forwardRef<
-  HTMLDivElement,
-  React.HTMLAttributes<HTMLDivElement>
->(({ className, ...props }, ref) => (
-  <div
-    ref={ref}
-    className={cn(
-      'rounded-lg border bg-card text-card-foreground shadow-sm',
-      className,
-    )}
-    {...props}
-  />
-))
+const cardVariants = cva('rounded-xl text-card-foreground transition-shadow', {
+  variants: {
+    variant: {
+      default: 'border border-border bg-card shadow-sm',
+      elevated: 'border border-border bg-card shadow-lg',
+      glass: 'glass shadow-xl',
+    },
+  },
+  defaultVariants: {
+    variant: 'default',
+  },
+})
+
+export interface CardProps
+  extends React.HTMLAttributes<HTMLDivElement>,
+    VariantProps<typeof cardVariants> {}
+
+const Card = React.forwardRef<HTMLDivElement, CardProps>(
+  ({ className, variant, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn(cardVariants({ variant }), className)}
+      {...props}
+    />
+  ),
+)
 Card.displayName = 'Card'
 
 const CardHeader = React.forwardRef<
diff --git a/src/web/src/components/ui/input.tsx b/src/web/src/components/ui/input.tsx
index 54ed77b..46fa970 100644
--- a/src/web/src/components/ui/input.tsx
+++ b/src/web/src/components/ui/input.tsx
@@ -10,7 +10,11 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
       <input
         type={type}
         className={cn(
-          'flex h-10 w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
+          'flex h-10 w-full rounded-md border border-input-border bg-input px-3 py-2 text-sm text-foreground shadow-sm ring-offset-background transition-colors',
+          'placeholder:text-muted-foreground/70',
+          'file:border-0 file:bg-transparent file:text-sm file:font-medium',
+          'hover:border-border focus-visible:border-ring focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring/30 focus-visible:ring-offset-0',
+          'disabled:cursor-not-allowed disabled:opacity-50',
           className,
         )}
         ref={ref}
diff --git a/src/web/src/features/auth/pages/LoginPage.tsx b/src/web/src/features/auth/pages/LoginPage.tsx
index 44b5ad6..7315386 100644
--- a/src/web/src/features/auth/pages/LoginPage.tsx
+++ b/src/web/src/features/auth/pages/LoginPage.tsx
@@ -1,6 +1,6 @@
 import { useNavigate } from 'react-router-dom'
 import { isAxiosError } from 'axios'
-import { AlertCircle } from 'lucide-react'
+import { AlertCircle, Newspaper } from 'lucide-react'
 import { useLogin } from '../hooks/useLogin'
 import { LoginForm } from '../components/LoginForm'
 import {
@@ -39,14 +39,18 @@ export function LoginPage() {
   const errorMessage = resolveErrorMessage(error)
 
   return (
-    <Card className="w-full max-w-sm">
-      <CardHeader className="space-y-1">
-        <CardTitle className="text-2xl text-center">SIG-CM 2.0</CardTitle>
-        <CardDescription className="text-center">
-          Iniciar sesión
+    <Card variant="glass" className="w-full max-w-md">
+      <CardHeader className="space-y-3 text-center pb-2">
+        {/* Brand mark */}
+        <div className="mx-auto flex h-12 w-12 items-center justify-center rounded-xl bg-gradient-to-br from-brand-500 to-violet-500 shadow-lg shadow-brand-500/30">
+          <Newspaper className="h-6 w-6 text-white" strokeWidth={2.25} />
+        </div>
+        <CardTitle className="text-2xl tracking-tight">SIG-CM 2.0</CardTitle>
+        <CardDescription className="text-sm">
+          Sistema de gestión comercial · El Día
         </CardDescription>
       </CardHeader>
-      <CardContent className="space-y-4">
+      <CardContent className="space-y-4 pt-4">
         {errorMessage && (
           <Alert variant="destructive">
             <AlertCircle className="h-4 w-4" />
diff --git a/src/web/src/index.css b/src/web/src/index.css
index f7c4014..db20bdb 100644
--- a/src/web/src/index.css
+++ b/src/web/src/index.css
@@ -7,110 +7,155 @@
 @import "@fontsource/jetbrains-mono/400.css";
 
 /* ================================================================
-   SIG-CM 2.0 Design System — Tokens
+   SIG-CM 2.0 Design System v2.0 — Tokens
    Source of truth: Obsidian/02-ARQUITECTURA-y-TECH-STACK/2.14 🎨 Design System.md
-   Brand color: #008fbe (logo El Día) — escalado OKLCH
+   Brand: #008fbe (logo) + violet accent → tech sophistication
+   Style: dark-first elegante, glassmorphism, multi-layer shadows
    ================================================================ */
 
 @layer base {
   :root {
-    /* ── Brand (cyan-blue around logo #008fbe) ─────────────────── */
+    /* ── Brand cyan (logo #008fbe) ──────────────────────────── */
     --brand-50:  oklch(0.972 0.013 220);
     --brand-100: oklch(0.935 0.035 220);
     --brand-200: oklch(0.870 0.072 220);
     --brand-300: oklch(0.780 0.108 220);
-    --brand-400: oklch(0.690 0.128 220);
+    --brand-400: oklch(0.700 0.135 220);
     --brand-500: oklch(0.625 0.130 220); /* logo #008fbe */
-    --brand-600: oklch(0.550 0.128 222);
-    --brand-700: oklch(0.460 0.110 224);
-    --brand-800: oklch(0.360 0.082 226);
-    --brand-900: oklch(0.280 0.058 228);
-    --brand-950: oklch(0.200 0.040 230);
+    --brand-600: oklch(0.530 0.135 222);
+    --brand-700: oklch(0.440 0.115 224);
+    --brand-800: oklch(0.350 0.085 226);
+    --brand-900: oklch(0.270 0.060 228);
+    --brand-950: oklch(0.190 0.040 230);
 
-    /* ── Neutral (cool slate, complementa el blue) ─────────────── */
-    --neutral-50:  oklch(0.985 0.003 240);
-    --neutral-100: oklch(0.965 0.005 240);
-    --neutral-200: oklch(0.918 0.008 240);
-    --neutral-300: oklch(0.850 0.012 240);
-    --neutral-400: oklch(0.690 0.015 240);
-    --neutral-500: oklch(0.550 0.018 240);
-    --neutral-600: oklch(0.450 0.018 240);
-    --neutral-700: oklch(0.360 0.015 240);
-    --neutral-800: oklch(0.270 0.013 240);
-    --neutral-900: oklch(0.210 0.010 240);
-    --neutral-950: oklch(0.150 0.008 240);
+    /* ── Violet accent (combo tech con brand cyan) ──────────── */
+    --accent-violet-400: oklch(0.700 0.180 280);
+    --accent-violet-500: oklch(0.620 0.200 280);
+    --accent-violet-600: oklch(0.530 0.205 280);
 
-    /* ── Semantic ──────────────────────────────────────────────── */
-    --success:               oklch(0.640 0.155 145);
-    --success-foreground:    oklch(0.990 0.000 0);
-    --warning:               oklch(0.760 0.150 75);
-    --warning-foreground:    oklch(0.220 0.050 75);
+    /* ── Neutral (slate con shift sutil hacia azul/violeta) ── */
+    --neutral-50:  oklch(0.985 0.004 250);
+    --neutral-100: oklch(0.962 0.007 250);
+    --neutral-200: oklch(0.910 0.012 250);
+    --neutral-300: oklch(0.835 0.018 250);
+    --neutral-400: oklch(0.680 0.022 250);
+    --neutral-500: oklch(0.540 0.025 250);
+    --neutral-600: oklch(0.435 0.025 250);
+    --neutral-700: oklch(0.345 0.022 250);
+    --neutral-800: oklch(0.250 0.020 250);
+    --neutral-900: oklch(0.185 0.015 250);
+    --neutral-950: oklch(0.130 0.013 250);
 
-    /* ── shadcn semantic mapping (LIGHT) ───────────────────────── */
-    --background:            oklch(0.992 0.003 220); /* off-white tinted brand */
-    --foreground:            var(--neutral-900);
+    /* ── Semantic ──────────────────────────────────────────── */
+    --success:                oklch(0.640 0.155 145);
+    --success-foreground:     oklch(0.990 0.000 0);
+    --warning:                oklch(0.760 0.150 75);
+    --warning-foreground:     oklch(0.220 0.050 75);
 
-    --card:                  oklch(1 0 0);            /* pure white over tinted bg */
-    --card-foreground:       var(--neutral-900);
+    /* ── shadcn semantic mapping (LIGHT) ─────────────────── */
+    --background:             oklch(0.988 0.003 250); /* slate barely warm */
+    --foreground:             var(--neutral-900);
 
-    --popover:               oklch(1 0 0);
-    --popover-foreground:    var(--neutral-900);
+    --card:                   oklch(1 0 0);            /* pure white */
+    --card-foreground:        var(--neutral-900);
 
-    --primary:               var(--brand-600);        /* WCAG AA on white */
-    --primary-foreground:    oklch(0.990 0.000 0);
+    --popover:                oklch(1 0 0);
+    --popover-foreground:     var(--neutral-900);
 
-    --secondary:             var(--neutral-100);
-    --secondary-foreground:  var(--neutral-800);
+    --primary:                var(--brand-600);        /* WCAG AA on white */
+    --primary-foreground:     oklch(0.990 0.000 0);
 
-    --muted:                 var(--neutral-100);
-    --muted-foreground:      var(--neutral-500);
+    --secondary:              var(--neutral-100);
+    --secondary-foreground:   var(--neutral-800);
 
-    --accent:                var(--brand-50);         /* hover navigation, subtle brand tint */
-    --accent-foreground:     var(--brand-700);
+    --muted:                  var(--neutral-100);
+    --muted-foreground:       var(--neutral-500);
 
-    --destructive:           oklch(0.600 0.220 25);
+    --accent:                 var(--brand-50);
+    --accent-foreground:      var(--brand-700);
+
+    --destructive:            oklch(0.600 0.220 25);
     --destructive-foreground: oklch(0.990 0.000 0);
 
-    --border:                var(--neutral-200);
-    --input:                 var(--neutral-200);
-    --ring:                  var(--brand-500);
+    --border:                 var(--neutral-200);
+    --input:                  oklch(1 0 0);            /* WHITE inputs en light, no gris */
+    --input-border:           var(--neutral-300);      /* border más prominente */
+    --ring:                   var(--brand-500);
 
-    /* ── Spacing & shape ──────────────────────────────────────── */
-    --radius:                0.5rem; /* 8px */
+    /* ── Glass surfaces (backdrop-blur) ───────────────────── */
+    --glass-bg:               oklch(1 0 0 / 0.7);
+    --glass-border:           oklch(1 0 0 / 0.4);
 
-    /* ── Typography ───────────────────────────────────────────── */
+    /* ── Gradient backgrounds (hero, login) ───────────────── */
+    --gradient-mesh:
+      radial-gradient(at 100% 0%, oklch(0.625 0.130 220 / 0.12) 0px, transparent 50%),
+      radial-gradient(at 0% 100%, oklch(0.620 0.200 280 / 0.10) 0px, transparent 50%),
+      radial-gradient(at 50% 50%, oklch(0.700 0.135 220 / 0.05) 0px, transparent 60%);
+
+    /* ── Shadows (multi-layer para depth real) ────────────── */
+    --shadow-sm:              0 1px 2px 0 oklch(0.185 0.015 250 / 0.05);
+    --shadow:                 0 1px 3px 0 oklch(0.185 0.015 250 / 0.08), 0 1px 2px -1px oklch(0.185 0.015 250 / 0.06);
+    --shadow-md:              0 4px 8px -2px oklch(0.185 0.015 250 / 0.08), 0 2px 4px -2px oklch(0.185 0.015 250 / 0.04);
+    --shadow-lg:              0 12px 24px -6px oklch(0.185 0.015 250 / 0.12), 0 4px 8px -3px oklch(0.185 0.015 250 / 0.06);
+    --shadow-xl:              0 24px 48px -12px oklch(0.185 0.015 250 / 0.18), 0 8px 16px -8px oklch(0.185 0.015 250 / 0.08);
+    --shadow-glow:            0 0 0 1px oklch(0.625 0.130 220 / 0.10), 0 0 24px -4px oklch(0.625 0.130 220 / 0.20);
+
+    /* ── Spacing & shape ───────────────────────────────────── */
+    --radius:                 0.625rem; /* 10px */
+
+    /* ── Typography ────────────────────────────────────────── */
     --font-sans: "Inter", system-ui, -apple-system, sans-serif;
     --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
   }
 
   .dark {
-    --background:            var(--neutral-950);
-    --foreground:            var(--neutral-50);
+    /* Background con shift sutil hacia violet → "tech" feel */
+    --background:             oklch(0.135 0.018 252);  /* deep slate-violet */
+    --foreground:             var(--neutral-50);
 
-    --card:                  var(--neutral-900);
-    --card-foreground:       var(--neutral-50);
+    --card:                   oklch(0.180 0.020 252);  /* elevación visual */
+    --card-foreground:        var(--neutral-50);
 
-    --popover:               var(--neutral-900);
-    --popover-foreground:    var(--neutral-50);
+    --popover:                oklch(0.200 0.022 252);
+    --popover-foreground:     var(--neutral-50);
 
-    --primary:               var(--brand-400);        /* lighter on dark */
-    --primary-foreground:    var(--neutral-950);
+    --primary:                var(--brand-400);        /* brighter en dark, "neon" feel */
+    --primary-foreground:     oklch(0.130 0.013 250);
 
-    --secondary:             var(--neutral-800);
-    --secondary-foreground:  var(--neutral-100);
+    --secondary:              oklch(0.230 0.020 252);
+    --secondary-foreground:   var(--neutral-100);
 
-    --muted:                 var(--neutral-800);
-    --muted-foreground:      var(--neutral-400);
+    --muted:                  oklch(0.220 0.020 252);
+    --muted-foreground:       var(--neutral-400);
 
-    --accent:                var(--neutral-800);
-    --accent-foreground:     var(--brand-300);
+    --accent:                 oklch(0.250 0.030 252);
+    --accent-foreground:      var(--brand-300);
 
-    --destructive:           oklch(0.580 0.190 25);
+    --destructive:            oklch(0.580 0.190 25);
     --destructive-foreground: oklch(0.990 0.000 0);
 
-    --border:                var(--neutral-800);
-    --input:                 var(--neutral-800);
-    --ring:                  var(--brand-400);
+    --border:                 oklch(1 0 0 / 0.10);    /* sutil glass-style border */
+    --input:                  oklch(0.215 0.020 252); /* elevado del bg, contrast con texto */
+    --input-border:           oklch(1 0 0 / 0.14);
+    --ring:                   var(--brand-400);
+
+    /* Glass para dark */
+    --glass-bg:               oklch(0.180 0.020 252 / 0.6);
+    --glass-border:           oklch(1 0 0 / 0.10);
+
+    /* Gradient mesh dark mode — más vibrante */
+    --gradient-mesh:
+      radial-gradient(at 100% 0%, oklch(0.625 0.130 220 / 0.20) 0px, transparent 50%),
+      radial-gradient(at 0% 100%, oklch(0.620 0.200 280 / 0.18) 0px, transparent 50%),
+      radial-gradient(at 50% 50%, oklch(0.700 0.135 220 / 0.08) 0px, transparent 60%);
+
+    /* Shadows más intensas en dark */
+    --shadow-sm:              0 1px 2px 0 oklch(0 0 0 / 0.30);
+    --shadow:                 0 2px 4px 0 oklch(0 0 0 / 0.40), 0 1px 2px -1px oklch(0 0 0 / 0.30);
+    --shadow-md:              0 4px 8px -2px oklch(0 0 0 / 0.40), 0 2px 4px -2px oklch(0 0 0 / 0.30);
+    --shadow-lg:              0 12px 24px -6px oklch(0 0 0 / 0.50), 0 4px 8px -3px oklch(0 0 0 / 0.30);
+    --shadow-xl:              0 24px 48px -12px oklch(0 0 0 / 0.60), 0 8px 16px -8px oklch(0 0 0 / 0.30);
+    --shadow-glow:            0 0 0 1px oklch(0.700 0.135 220 / 0.30), 0 0 32px -4px oklch(0.700 0.135 220 / 0.40);
   }
 }
 
@@ -120,7 +165,6 @@
   }
 
   html {
-    /* Smooth color transitions when toggling theme */
     color-scheme: light dark;
   }
 
@@ -137,17 +181,15 @@
     min-height: 100svh;
   }
 
-  /* Selection color uses brand */
   ::selection {
     background-color: var(--brand-200);
     color: var(--brand-900);
   }
   .dark ::selection {
-    background-color: var(--brand-800);
+    background-color: var(--brand-700);
     color: var(--brand-50);
   }
 
-  /* Focus visible — accessible ring usando brand */
   *:focus-visible {
     outline: 2px solid var(--ring);
     outline-offset: 2px;
@@ -156,7 +198,7 @@
   h1, h2, h3, h4, h5, h6 {
     font-family: var(--font-sans);
     font-weight: 600;
-    letter-spacing: -0.01em;
+    letter-spacing: -0.015em;
   }
 
   code, pre, kbd, samp {
@@ -165,9 +207,30 @@
 }
 
 /* ================================================================
-   Tailwind 4 inline theme — expone tokens como utility classes
-   Cada token aquí queda disponible como Tailwind utility
-   (bg-background, text-foreground, border-border, etc.)
+   Glass surface utility
+   Uso: <div className="glass">…</div>
+   ================================================================ */
+@layer components {
+  .glass {
+    background-color: var(--glass-bg);
+    backdrop-filter: blur(20px) saturate(180%);
+    -webkit-backdrop-filter: blur(20px) saturate(180%);
+    border: 1px solid var(--glass-border);
+  }
+
+  .gradient-mesh {
+    background-image: var(--gradient-mesh);
+  }
+
+  /* Brand glow para focus en inputs críticos */
+  .focus-glow:focus-visible {
+    box-shadow: var(--shadow-glow);
+    outline: none;
+  }
+}
+
+/* ================================================================
+   Tailwind 4 inline theme — utilidades disponibles globalmente
    ================================================================ */
 @theme inline {
   --color-background:           var(--background);
@@ -188,9 +251,10 @@
   --color-destructive-foreground: var(--destructive-foreground);
   --color-border:               var(--border);
   --color-input:                var(--input);
+  --color-input-border:         var(--input-border);
   --color-ring:                 var(--ring);
 
-  /* Brand scale (utilities tipo bg-brand-500, text-brand-700, etc.) */
+  /* Brand */
   --color-brand-50:  var(--brand-50);
   --color-brand-100: var(--brand-100);
   --color-brand-200: var(--brand-200);
@@ -203,6 +267,11 @@
   --color-brand-900: var(--brand-900);
   --color-brand-950: var(--brand-950);
 
+  /* Violet accent */
+  --color-violet-400: var(--accent-violet-400);
+  --color-violet-500: var(--accent-violet-500);
+  --color-violet-600: var(--accent-violet-600);
+
   /* Semantic */
   --color-success:               var(--success);
   --color-success-foreground:    var(--success-foreground);
@@ -212,6 +281,14 @@
   --radius-sm: calc(var(--radius) - 4px);
   --radius-md: calc(var(--radius) - 2px);
   --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+
+  --shadow-sm:    var(--shadow-sm);
+  --shadow:       var(--shadow);
+  --shadow-md:    var(--shadow-md);
+  --shadow-lg:    var(--shadow-lg);
+  --shadow-xl:    var(--shadow-xl);
+  --shadow-glow:  var(--shadow-glow);
 
   --font-sans: var(--font-sans);
   --font-mono: var(--font-mono);
diff --git a/src/web/src/layouts/PublicLayout.tsx b/src/web/src/layouts/PublicLayout.tsx
index 11731a8..fc4232a 100644
--- a/src/web/src/layouts/PublicLayout.tsx
+++ b/src/web/src/layouts/PublicLayout.tsx
@@ -6,8 +6,26 @@ interface PublicLayoutProps {
 
 export function PublicLayout({ children }: PublicLayoutProps) {
   return (
-    <div className="min-h-svh bg-muted/40 flex items-center justify-center p-4">
-      {children}
+    <div className="relative min-h-svh flex items-center justify-center p-4 overflow-hidden">
+      {/* Gradient mesh background — subtle radial blobs (brand cyan + violet) */}
+      <div className="absolute inset-0 gradient-mesh pointer-events-none" />
+
+      {/* Subtle grid texture overlay (visible on dark, fades on light) */}
+      <div
+        className="absolute inset-0 opacity-[0.015] dark:opacity-[0.04] pointer-events-none"
+        style={{
+          backgroundImage:
+            'linear-gradient(to right, currentColor 1px, transparent 1px), linear-gradient(to bottom, currentColor 1px, transparent 1px)',
+          backgroundSize: '64px 64px',
+        }}
+      />
+
+      {/* Brand glow accents (positioned blobs) */}
+      <div className="absolute top-[-20%] right-[-10%] w-[500px] h-[500px] rounded-full bg-brand-500/10 dark:bg-brand-500/15 blur-[120px] pointer-events-none" />
+      <div className="absolute bottom-[-20%] left-[-10%] w-[500px] h-[500px] rounded-full bg-violet-500/10 dark:bg-violet-500/12 blur-[120px] pointer-events-none" />
+
+      {/* Content */}
+      <div className="relative z-10 w-full flex justify-center">{children}</div>
     </div>
   )
 }