Refonte UI : design system, logo, shell responsive et pages simples

- Nouveaux tokens (indigo/corail, statuts, plateformes) et mode sombre
- Logo et favicon Social Flow redessinés
- AppShell partagé : sidebar groupée (desktop) + barre de navigation basse (mobile)
- Suppression des pages mobiles dupliquées et des composants morts
- Tableau de bord, connexion, 404, calendrier, médiathèque, IA, statistiques

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017ADkrVcVFTT14hbB148HYS

tailwind.config.ts

@@ -11,55 +11,74 @@ export default {
         sm: "calc(var(--radius) - 4px)",
       },
       colors: {
-        background: "hsl(var(--background))",
-        foreground: "hsl(var(--foreground))",
+        background: "hsl(var(--background) / <alpha-value>)",
+        foreground: "hsl(var(--foreground) / <alpha-value>)",
         card: {
-          DEFAULT: "hsl(var(--card))",
-          foreground: "hsl(var(--card-foreground))",
+          DEFAULT: "hsl(var(--card) / <alpha-value>)",
+          foreground: "hsl(var(--card-foreground) / <alpha-value>)",
         },
         popover: {
-          DEFAULT: "hsl(var(--popover))",
-          foreground: "hsl(var(--popover-foreground))",
+          DEFAULT: "hsl(var(--popover) / <alpha-value>)",
+          foreground: "hsl(var(--popover-foreground) / <alpha-value>)",
         },
         primary: {
-          DEFAULT: "hsl(var(--primary))",
-          foreground: "hsl(var(--primary-foreground))",
+          DEFAULT: "hsl(var(--primary) / <alpha-value>)",
+          foreground: "hsl(var(--primary-foreground) / <alpha-value>)",
         },
         secondary: {
-          DEFAULT: "hsl(var(--secondary))",
-          foreground: "hsl(var(--secondary-foreground))",
+          DEFAULT: "hsl(var(--secondary) / <alpha-value>)",
+          foreground: "hsl(var(--secondary-foreground) / <alpha-value>)",
         },
         muted: {
-          DEFAULT: "hsl(var(--muted))",
-          foreground: "hsl(var(--muted-foreground))",
+          DEFAULT: "hsl(var(--muted) / <alpha-value>)",
+          foreground: "hsl(var(--muted-foreground) / <alpha-value>)",
         },
         accent: {
-          DEFAULT: "hsl(var(--accent))",
-          foreground: "hsl(var(--accent-foreground))",
+          DEFAULT: "hsl(var(--accent) / <alpha-value>)",
+          foreground: "hsl(var(--accent-foreground) / <alpha-value>)",
         },
         destructive: {
-          DEFAULT: "hsl(var(--destructive))",
-          foreground: "hsl(var(--destructive-foreground))",
+          DEFAULT: "hsl(var(--destructive) / <alpha-value>)",
+          foreground: "hsl(var(--destructive-foreground) / <alpha-value>)",
         },
-        border: "hsl(var(--border))",
-        input: "hsl(var(--input))",
-        ring: "hsl(var(--ring))",
+        success: {
+          DEFAULT: "hsl(var(--success) / <alpha-value>)",
+          foreground: "hsl(var(--success-foreground) / <alpha-value>)",
+        },
+        warning: {
+          DEFAULT: "hsl(var(--warning) / <alpha-value>)",
+          foreground: "hsl(var(--warning-foreground) / <alpha-value>)",
+        },
+        info: {
+          DEFAULT: "hsl(var(--info) / <alpha-value>)",
+          foreground: "hsl(var(--info-foreground) / <alpha-value>)",
+        },
+        "brand-accent": {
+          DEFAULT: "hsl(var(--brand-accent) / <alpha-value>)",
+          foreground: "hsl(var(--brand-accent-foreground) / <alpha-value>)",
+        },
+        facebook: "hsl(var(--facebook) / <alpha-value>)",
+        instagram: "hsl(var(--instagram) / <alpha-value>)",
+        tiktok: "hsl(var(--tiktok) / <alpha-value>)",
+        border: "hsl(var(--border) / <alpha-value>)",
+        input: "hsl(var(--input) / <alpha-value>)",
+        ring: "hsl(var(--ring) / <alpha-value>)",
         chart: {
-          "1": "hsl(var(--chart-1))",
-          "2": "hsl(var(--chart-2))",
-          "3": "hsl(var(--chart-3))",
-          "4": "hsl(var(--chart-4))",
-          "5": "hsl(var(--chart-5))",
+          "1": "hsl(var(--chart-1) / <alpha-value>)",
+          "2": "hsl(var(--chart-2) / <alpha-value>)",
+          "3": "hsl(var(--chart-3) / <alpha-value>)",
+          "4": "hsl(var(--chart-4) / <alpha-value>)",
+          "5": "hsl(var(--chart-5) / <alpha-value>)",
         },
         sidebar: {
-          DEFAULT: "hsl(var(--sidebar))",
-          foreground: "hsl(var(--sidebar-foreground))",
-          primary: "hsl(var(--sidebar-primary))",
-          "primary-foreground": "hsl(var(--sidebar-primary-foreground))",
-          accent: "hsl(var(--sidebar-accent))",
-          "accent-foreground": "hsl(var(--sidebar-accent-foreground))",
-          border: "hsl(var(--sidebar-border))",
-          ring: "hsl(var(--sidebar-ring))",
+          DEFAULT: "hsl(var(--sidebar) / <alpha-value>)",
+          foreground: "hsl(var(--sidebar-foreground) / <alpha-value>)",
+          primary: "hsl(var(--sidebar-primary) / <alpha-value>)",
+          "primary-foreground": "hsl(var(--sidebar-primary-foreground) / <alpha-value>)",
+          accent: "hsl(var(--sidebar-accent) / <alpha-value>)",
+          "accent-foreground": "hsl(var(--sidebar-accent-foreground) / <alpha-value>)",
+          border: "hsl(var(--sidebar-border) / <alpha-value>)",
+          ring: "hsl(var(--sidebar-ring) / <alpha-value>)",
         },
       },
       fontFamily: {
@@ -85,6 +104,9 @@ export default {
           },
         },
       },
+      boxShadow: {
+        soft: "0 1px 2px 0 rgb(15 23 42 / 0.04), 0 1px 3px 0 rgb(15 23 42 / 0.06)",
+      },
       animation: {
         "accordion-down": "accordion-down 0.2s ease-out",
         "accordion-up": "accordion-up 0.2s ease-out",