feat: complete agency site build (Phases 1-7)

Full Next.js 16 + Payload CMS 3.x agency site with:
- Homepage: Hero, TrustBar, Services, Configurator wizard, Process,
  Selected Works, Philosophy, CTA Banner
- Sub-pages: /services (3 pillars + AI Layer), /work/[slug] (case
  studies), /about (philosophy + story)
- Configurator: 3-step wizard with AI brief generation API
- i18n: Full EN/FR bilingual with next-intl
- Design system: Cormorant Garamond + Inter, celestial blue palette,
  glassmorphism nav, Framer Motion animations
- Payload CMS collections: Projects, Services, Submissions, Media

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tailwind.config.ts

@@ -0,0 +1,54 @@
+import type { Config } from 'tailwindcss'
+
+const config: Config = {
+  content: [
+    './src/**/*.{ts,tsx}',
+  ],
+  theme: {
+    extend: {
+      colors: {
+        primary: {
+          DEFAULT: '#5BA4D9',
+          dark: '#006494',
+          light: '#8EC5E8',
+        },
+        navy: '#1C2B3A',
+        teal: '#2EC4A0',
+        surface: {
+          DEFAULT: '#f8f9fa',
+          low: '#f3f4f5',
+          high: '#ffffff',
+        },
+        'on-surface': '#191c1d',
+        outline: {
+          DEFAULT: '#72787e',
+          variant: '#c2c7ce',
+        },
+      },
+      fontFamily: {
+        serif: ['Cormorant Garamond', 'Georgia', 'serif'],
+        sans: ['Inter', 'system-ui', 'sans-serif'],
+      },
+      letterSpacing: {
+        headline: '-0.02em',
+        label: '0.1em',
+      },
+      borderRadius: {
+        xl: '0.75rem',
+      },
+      boxShadow: {
+        subtle: '0 20px 40px rgba(25, 28, 29, 0.06)',
+        card: '0 4px 16px rgba(25, 28, 29, 0.04)',
+      },
+      backgroundImage: {
+        'gradient-cta': 'linear-gradient(135deg, #006494, #5BA4D9)',
+      },
+      backdropBlur: {
+        glass: '20px',
+      },
+    },
+  },
+  plugins: [],
+}
+
+export default config