diff --git a/src/components/Header.tsx b/src/components/Header.tsx
new file mode 100644
index 0000000..edfc238
--- /dev/null
+++ b/src/components/Header.tsx
@@ -0,0 +1,114 @@
+import React, { useState } from 'react';
+import { Menu, X, Anchor } from 'lucide-react';
+
+interface HeaderProps {
+  scrolled: boolean;
+}
+
+const navLinks = [
+  { label: 'Accueil', href: '#accueil' },
+  { label: 'À Propos', href: '#apropos' },
+  { label: 'Histoire', href: '#histoire' },
+  { label: 'Galerie', href: '#galerie' },
+  { label: 'Événements', href: '#evenements' },
+  { label: 'Contact', href: '#contact' },
+];
+
+const Header: React.FC<HeaderProps> = ({ scrolled }) => {
+  const [menuOpen, setMenuOpen] = useState(false);
+
+  const handleNavClick = (href: string) => {
+    setMenuOpen(false);
+    const el = document.querySelector(href);
+    if (el) el.scrollIntoView({ behavior: 'smooth' });
+  };
+
+  return (
+    <header
+      className={`fixed top-0 left-0 right-0 z-50 transition-all duration-400 ${
+        scrolled
+          ? 'bg-marine-900 shadow-xl py-2'
+          : 'bg-marine-900/80 backdrop-blur-sm py-4'
+      }`}
+    >
+      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 flex items-center justify-between">
+        {/* Logo */}
+        <a
+          href="#accueil"
+          onClick={(e) => { e.preventDefault(); handleNavClick('#accueil'); }}
+          className="flex items-center gap-3 group"
+          aria-label="Accueil AATMTC"
+        >
+          <div className="bg-gold-500 group-hover:bg-gold-400 transition-colors p-2 rounded-sm">
+            <Anchor className="w-6 h-6 text-white" />
+          </div>
+          <div className="leading-tight">
+            <div className="text-white font-bold text-sm tracking-widest uppercase">AATMTC</div>
+            <div className="text-gold-400 text-xs tracking-wide hidden sm:block">Troupes de Marine · Télégraphistes</div>
+          </div>
+        </a>
+
+        {/* Desktop Nav */}
+        <nav className="hidden lg:flex items-center gap-1" role="navigation" aria-label="Navigation principale">
+          {navLinks.map((link) => (
+            <a
+              key={link.href}
+              href={link.href}
+              onClick={(e) => { e.preventDefault(); handleNavClick(link.href); }}
+              className="text-gray-200 hover:text-gold-400 transition-colors px-4 py-2 text-sm font-medium tracking-wide uppercase relative group"
+            >
+              {link.label}
+              <span className="absolute bottom-1 left-4 right-4 h-0.5 bg-gold-400 scale-x-0 group-hover:scale-x-100 transition-transform origin-left duration-300" />
+            </a>
+          ))}
+          <a
+            href="#contact"
+            onClick={(e) => { e.preventDefault(); handleNavClick('#contact'); }}
+            className="ml-4 bg-gold-500 hover:bg-gold-400 text-white text-sm font-semibold px-5 py-2 rounded-sm transition-colors tracking-wide uppercase"
+          >
+            Nous rejoindre
+          </a>
+        </nav>
+
+        {/* Mobile Hamburger */}
+        <button
+          className="lg:hidden text-white p-2 focus:outline-none focus:ring-2 focus:ring-gold-400 rounded"
+          onClick={() => setMenuOpen(!menuOpen)}
+          aria-label={menuOpen ? 'Fermer le menu' : 'Ouvrir le menu'}
+          aria-expanded={menuOpen}
+        >
+          {menuOpen ? <X className="w-6 h-6" /> : <Menu className="w-6 h-6" />}
+        </button>
+      </div>
+
+      {/* Mobile Menu */}
+      <div
+        className={`lg:hidden overflow-hidden transition-all duration-300 ${
+          menuOpen ? 'max-h-screen opacity-100' : 'max-h-0 opacity-0'
+        }`}
+      >
+        <nav className="bg-marine-900 border-t border-marine-700 px-4 pb-4 pt-2 flex flex-col gap-1">
+          {navLinks.map((link) => (
+            <a
+              key={link.href}
+              href={link.href}
+              onClick={(e) => { e.preventDefault(); handleNavClick(link.href); }}
+              className="text-gray-200 hover:text-gold-400 hover:bg-marine-800 transition-colors px-4 py-3 text-sm font-medium uppercase tracking-wide rounded"
+            >
+              {link.label}
+            </a>
+          ))}
+          <a
+            href="#contact"
+            onClick={(e) => { e.preventDefault(); handleNavClick('#contact'); }}
+            className="mt-2 bg-gold-500 hover:bg-gold-400 text-white text-sm font-semibold px-4 py-3 rounded-sm text-center uppercase tracking-wide"
+          >
+            Nous rejoindre
+          </a>
+        </nav>
+      </div>
+    </header>
+  );
+};
+
+export default Header;