/* Custom overrides */

.note h3 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}
        :root {
            /* Couleur de fond principale */
            --anthracite: #1a1f24;
            
            /* Palette psychologiquement attrayante */
            --trust-blue: #4A6FA5;        /* Confiance, fiabilité */
            --creative-orange: #FF7E6B;   /* Créativité, énergie */
            --calm-teal: #8DD9B9;         /* Calme, sérénité */
            --warm-yellow: #FFD166;       /* Optimisme, joie */
            --soft-purple: #9B8BFF;      /* Imagination, sagesse */
            
            /* Couleurs de texte */
            --text-white: #F5F5F5;
            --text-light: #E0E0E0;
            --text-gray: #B0B0B0;
            
            /* Autres variables */
            --shadow: rgba(0, 0, 0, 0.3);
            --transition: all 0.3s ease;
            --border-radius: 12px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Roboto', sans-serif;
            background-color: var(--anthracite);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: linear-gradient(135deg, #1a1f24 0%, #0e1217 100%);
            padding-bottom: 70px; /* Espace pour la navbar mobile */
        }

        h1, h2, h3, h4 {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
        }

        .app-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* Header */
        header {
            background-color: rgba(26, 31, 36, 0.9);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px var(--shadow);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--trust-blue);
            text-decoration: none;
        }

        .logo i {
            font-size: 2rem;
            color: var(--soft-purple);
        }

        .nav-menu {
            display: flex;
            gap: 1.8rem;
        }

        .nav-menu a {
            color: var(--text-light);
            text-decoration: none;
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 0.5rem 0;
            position: relative;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-menu a i {
            font-size: 1.1rem;
        }

        .nav-menu a:hover {
            color: var(--soft-purple);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(to right, var(--soft-purple), var(--trust-blue));
            transition: var(--transition);
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }

        .btn {
            background: linear-gradient(135deg, var(--trust-blue), #3a5c8a);
            color: var(--text-white);
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 30px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            font-family: 'Poppins', sans-serif;
            text-decoration: none;
            display: inline-block;
            text-align: center;
            box-shadow: 0 4px 15px rgba(74, 111, 165, 0.3);
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(74, 111, 165, 0.4);
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--creative-orange), #e66c59);
        }

        .btn-accent:hover {
            box-shadow: 0 6px 20px rgba(255, 126, 107, 0.4);
        }

        .icon-btn {
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.4rem;
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .icon-btn:hover {
            color: var(--creative-orange);
            transform: scale(1.1);
        }

        .cart-count {
            position: absolute;
            top: -8px;
            right: -8px;
            background-color: var(--creative-orange);
            color: var(--anthracite);
            font-size: 0.75rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-weight: bold;
        }

        /* Hero Section */
        .hero {
            padding: 6rem 0 4rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -10%;
            width: 60%;
            height: 150%;
            background: radial-gradient(circle, rgba(155, 139, 255, 0.15) 0%, transparent 70%);
            z-index: -1;
        }

        .hero-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 3rem;
        }

        .hero-text {
            flex: 1;
            max-width: 600px;
        }

        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            background: linear-gradient(to right, var(--text-white), var(--soft-purple));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-gray);
            margin-bottom: 2.5rem;
            max-width: 500px;
        }

        .hero-buttons {
            display: flex;
            gap: 1.2rem;
            flex-wrap: wrap;
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            position: relative;
        }

        .hero-img-container {
            width: 100%;
            max-width: 500px;
            height: 300px;
            border-radius: var(--border-radius);
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 2rem;
            text-align: center;
        }

        .hero-img-container i {
            font-size: 4rem;
            color: var(--warm-yellow);
            margin-bottom: 1.5rem;
        }

        .hero-img-container h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
            color: var(--text-white);
        }

        .hero-img-container p {
            color: var(--text-light);
            font-size: 1.1rem;
        }

        /* Categories */
        .categories {
            padding: 4rem 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--text-white);
        }

        .section-title p {
            color: var(--text-gray);
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }

        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
        }

        .category-card {
            background: linear-gradient(145deg, #1e2329, #1a1f24);
            border-radius: var(--border-radius);
            padding: 2.5rem 1.5rem;
            text-align: center;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.05);
            cursor: pointer;
        }

        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
            border-color: var(--trust-blue);
        }

        .category-icon {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }

        .tech .category-icon { color: var(--trust-blue); }
        .business .category-icon { color: var(--creative-orange); }
        .health .category-icon { color: var(--calm-teal); }
        .education .category-icon { color: var(--soft-purple); }

        .category-card h3 {
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
            color: var(--text-white);
        }

        .category-card p {
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        /* Products */
        .products {
            padding: 4rem 0;
        }

        .products-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2.5rem;
            flex-wrap: wrap;
            gap: 1.5rem;
        }

        .filter-options {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .filter-btn {
            background-color: #1e2329;
            color: var(--text-light);
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .filter-btn.active, .filter-btn:hover {
            background: linear-gradient(135deg, var(--trust-blue), #3a5c8a);
            color: var(--text-white);
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2.2rem;
        }

        .product-card {
            background: linear-gradient(145deg, #1e2329, #1a1f24);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
            border-color: var(--trust-blue);
        }

        .product-img {
            width: 100%;
            height: 220px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .product-img-content {
            padding: 1.5rem;
            text-align: center;
            z-index: 2;
        }

        .product-img-content i {
            font-size: 4.5rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 1rem;
        }

        .product-img-content h3 {
            font-size: 1.6rem;
            color: var(--text-white);
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }

        .product-content {
            padding: 1.8rem;
        }

        .product-category {
            font-size: 0.9rem;
            text-transform: uppercase;
            margin-bottom: 0.8rem;
            display: block;
            font-weight: 500;
        }

        .science .product-category { color: var(--trust-blue); }
        .programming .product-category { color: var(--creative-orange); }
        .economy .product-category { color: var(--calm-teal); }
        .history .product-category { color: var(--soft-purple); }

        .product-title {
            font-size: 1.35rem;
            margin-bottom: 0.8rem;
            color: var(--text-white);
        }

        .product-description {
            color: var(--text-gray);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            height: 4rem;
            overflow: hidden;
        }

        .product-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .product-price {
            font-weight: bold;
            font-size: 1.5rem;
            color: var(--text-white);
        }

        .product-rating {
            color: var(--warm-yellow);
            font-size: 0.9rem;
        }

        .add-to-cart {
            background: linear-gradient(135deg, var(--trust-blue), #3a5c8a);
            color: var(--text-white);
            border: none;
            padding: 0.8rem;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(74, 111, 165, 0.3);
        }

        .add-to-cart:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 15px rgba(74, 111, 165, 0.4);
        }

        /* Features */
        .features {
            padding: 5rem 0;
            background: linear-gradient(to right, #1a1f24, #1e2329);
            position: relative;
            overflow: hidden;
        }

        .features::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 150%;
            background: radial-gradient(circle, rgba(141, 217, 185, 0.1) 0%, transparent 70%);
            z-index: 0;
        }

        .features-content {
            position: relative;
            z-index: 2;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--border-radius);
            padding: 2.5rem;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
            border-color: var(--calm-teal);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 1.5rem;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--text-white);
        }

        .feature-card p {
            color: var(--text-gray);
            font-size: 1.05rem;
        }

        /* FAQ Section */
        .faq {
            padding: 5rem 0;
            background: linear-gradient(to bottom, #1a1f24, #0e1217);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 1.2rem;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .faq-question {
            background: linear-gradient(145deg, #1e2329, #1a1f24);
            padding: 1.5rem;
            font-size: 1.2rem;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }

        .faq-question:hover {
            background: linear-gradient(145deg, #232930, #1e2329);
        }

        .faq-question i {
            transition: var(--transition);
        }

        .faq-question.active i {
            transform: rotate(180deg);
        }

        .faq-answer {
            background: rgba(255, 255, 255, 0.03);
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-question.active + .faq-answer {
            padding: 1.5rem;
            max-height: 500px;
        }

        /* Footer */
        footer {
            background-color: #1e2329;
            padding: 4rem 0 1.5rem;
            margin-top: auto;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-column h3 {
            font-size: 1.4rem;
            margin-bottom: 1.8rem;
            position: relative;
            padding-bottom: 0.8rem;
            color: var(--text-white);
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(to right, var(--trust-blue), var(--soft-purple));
            border-radius: 3px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 1rem;
        }

        .footer-links a {
            color: var(--text-gray);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-links a i {
            width: 20px;
            color: var(--calm-teal);
        }

        .footer-links a:hover {
            color: var(--calm-teal);
            padding-left: 5px;
        }

        .newsletter p {
            color: var(--text-gray);
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .newsletter-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }

        .newsletter-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            background-color: rgba(255, 255, 255, 0.03);
            border-radius: 8px;
            color: var(--text-white);
            min-width: 200px;
        }

        .newsletter-input::placeholder {
            color: var(--text-gray);
        }

        .social-links {
            display: flex;
            gap: 1.2rem;
            margin-top: 1.5rem;
        }

        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-gray);
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .social-links a:hover {
            background: linear-gradient(135deg, var(--trust-blue), var(--soft-purple));
            color: var(--text-white);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        /* Bottom Navigation */
        .bottom-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: linear-gradient(145deg, #1e2329, #1a1f24);
            backdrop-filter: blur(10px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            z-index: 1000;
            padding: 0.8rem 0;
            box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.3);
        }

        .bottom-nav-content {
            display: flex;
            justify-content: space-around;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: var(--text-gray);
            font-size: 0.85rem;
            transition: var(--transition);
            padding: 0.5rem;
            border-radius: 10px;
            flex: 1;
        }

        .nav-item i {
            font-size: 1.4rem;
            margin-bottom: 0.3rem;
        }

        .nav-item:hover, .nav-item.active {
            color: var(--soft-purple);
            background: rgba(155, 139, 255, 0.1);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-text {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            
            .hero h1 {
                font-size: 2.8rem;
            }
        }

        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
                gap: 1rem;
            }
            
            .nav-menu {
                display: none;
            }
            
            .hero h1 {
                font-size: 2.3rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .products-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            body {
                padding-bottom: 70px;
            }
        }

        @media (min-width: 769px) {
            .bottom-nav {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .nav-actions {
                gap: 0.8rem;
            }
            
            .hero {
                padding: 4rem 0 2rem;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .bottom-nav-content {
                padding: 0 10px;
            }
            
            .nav-item {
                font-size: 0.7rem;
                padding: 0.3rem;
            }
            
            .nav-item i {
                font-size: 1.2rem;
            }
        }

/* Registration page */
.signup-container {
    max-width: 400px;
    margin: 3rem auto;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 10px var(--shadow);
}
.signup-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}
.signup-container label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}
.signup-container input {
    width: 100%;
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    color: var(--text-white);
}
.signup-container input::placeholder {
    color: var(--text-gray);
}
.password-field {
    position: relative;
}
.toggle-password {
    position: absolute;
    top: 50%;
    right: 15px;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-gray);
}
.password-strength {
    font-size: 0.85rem;
    color: var(--warm-yellow);
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}