* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background-color: #ffffff;
            color: #333333;
        }

        /* Barre de navigation */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 40px;
            background-color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }

        .logo {
            font-size: 28px;
            font-weight: 900;
            color: #0056b3; /* Bleu hivernal */
            letter-spacing: -1px;
            cursor: pointer;
        }

        .nav-buttons a {
            margin-left: 15px;
            padding: 12px 20px;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
        }

        .btn-login {
            background-color: transparent;
            color: #333;
            
        }

        .btn-login:hover {
            background-color: #f1f1f1;
        }

        .btn-signup {
            background-color: #111;
            color: white;
        }

        .btn-signup:hover {
            background-color: #333;
        }

        /* Section Hero (Style UberEats/DoorDash) */
        .hero {
            /* Image de fond avec un filtre sombre pour faire ressortir le texte */
            background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), 
            url('https://www.istockphoto.com/photo/white-snow-covered-mailbox-on-sidewalk-street-in-northern-virginia-suburbs-and-gm1474388792-504268302') center/cover no-repeat;
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 0 20px;
        }

        .hero h1 {
            color: white;
            font-size: 3.5rem;
            font-weight: bold;
            margin-bottom: 30px;
            max-width: 800px;
            line-height: 1.2;
        }

        /* Barre de recherche centrale */
        .search-container {
            display: flex;
            width: 100%;
            max-width: 750px;
            background: white;
            border-radius: 50px;
            padding: 8px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .search-icon {
            padding: 15px 10px 15px 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .search-container input {
            flex-grow: 1;
            border: none;
            font-size: 18px;
            outline: none;
            padding: 15px 10px;
            background: transparent;
        }

        .search-container button {
            background-color: #0056b3;
            color: white;
            border: none;
            padding: 15px 35px;
            border-radius: 40px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }

        .search-container button:hover {
            background-color: #004494;
        }

        /* Section Comment ça marche */
        .how-it-works {
            padding: 80px 40px;
            background-color: #f8f9fa;
        }

        .how-it-works h2 {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 50px;
        }

        .features-grid {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            max-width: 1200px;
            margin: 0 auto;
        }

        .feature-card {
            flex: 1;
            min-width: 250px;
            text-align: center;
        }

        .feature-icon {
            font-size: 50px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .feature-card p {
            color: #666;
            line-height: 1.6;
            font-size: 1.1rem;
        }

        /* Design Responsive */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .search-container { flex-direction: column; border-radius: 20px; padding: 15px; }
            .search-container input { padding: 10px; margin-bottom: 10px; }
            .search-container button { width: 100%; padding: 15px; border-radius: 10px; }
            .features-grid { flex-direction: column; }
        }