/* Variables et reset */
        :root {
            --primary-color: #e63946;
            --secondary-color: #1d3557;
            --accent-color: #2a9d8f;
            --light-color: #f1faee;
            --dark-color: #1d3557;
            --gray-color: #8d99ae;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            font-size: 16px;
        }

        .btn:hover {
            background-color: #c1121f;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .btn-secondary {
            background-color: var(--secondary-color);
        }

        .btn-secondary:hover {
            background-color: #14213d;
        }

        .btn-accent {
            background-color: var(--accent-color);
        }

        .btn-accent:hover {
            background-color: #21867a;
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
            color: var(--secondary-color);
        }

        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .section-title p {
            font-size: 1.1rem;
            color: var(--gray-color);
            max-width: 700px;
            margin: 0 auto;
        }

        /* Header */
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary-color);
        }

        .logo i {
            color: var(--primary-color);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        .nav-links a {
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary-color);
        }

        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }

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

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--secondary-color);
            cursor: pointer;
        }

        /* Hero section */
        .hero {
            background: linear-gradient(rgba(29, 53, 87, 0.85), rgba(29, 53, 87, 0.9)), url('images/image.png');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding: 120px 0;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* Statistics */
        .stats {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 60px;
        }

        .stat-item {
            text-align: center;
            flex: 1;
            min-width: 200px;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .stat-text {
            font-size: 1.1rem;
            color: var(--secondary-color);
        }

        /* Causes */
        .causes {
            background-color: var(--light-color);
        }

        .causes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }

        .cause-card {
            background-color: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .cause-card:hover {
            transform: translateY(-10px);
        }

        .cause-img {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }

        .cause-content {
            padding: 25px;
        }

        .cause-content h3 {
            color: var(--secondary-color);
            margin-bottom: 15px;
        }

        .cause-content p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }

        .progress-bar {
            height: 10px;
            background-color: #e0e0e0;
            border-radius: 5px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .progress {
            height: 100%;
            background-color: var(--accent-color);
            border-radius: 5px;
        }

        .cause-info {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
            color: var(--secondary-color);
            font-weight: 500;
        }

        /* Donation form */
        .donation-form {
            background-color: white;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--secondary-color);
        }

        .form-control {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
        }

        .donation-amounts {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 25px;
        }

        .amount-option {
            flex: 1;
            min-width: 120px;
        }

        .amount-option input {
            display: none;
        }

        .amount-option label {
            display: block;
            text-align: center;
            padding: 15px;
            background-color: #f5f5f5;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
            color: var(--secondary-color);
        }

        .amount-option input:checked + label {
            background-color: var(--accent-color);
            color: white;
        }

        .amount-option label:hover {
            background-color: #e0e0e0;
        }

        /* Footer */
        footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary-color);
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            transition: var(--transition);
            opacity: 0.8;
        }

        .footer-links a:hover {
            opacity: 1;
            color: var(--primary-color);
            padding-left: 5px;
        }

        .contact-info {
            list-style: none;
        }

        .contact-info li {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .contact-info i {
            margin-right: 10px;
            color: var(--accent-color);
        }

        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            transition: var(--transition);
        }

        .social-icons a:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            opacity: 0.7;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow);
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero h1 {
                font-size: 2.3rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .donation-form {
                padding: 30px 20px;
            }
        }

        @media (max-width: 576px) {
            .section {
                padding: 60px 0;
            }

            .hero {
                padding: 80px 0;
            }

            .stat-item {
                min-width: 150px;
            }

            .stat-number {
                font-size: 2.5rem;
            }
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background-color: white;
            width: 90%;
            max-width: 500px;
            padding: 40px;
            border-radius: 10px;
            text-align: center;
            position: relative;
            animation: modalFadeIn 0.3s ease;
        }

        @keyframes modalFadeIn {
            from { opacity: 0; transform: translateY(-50px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--gray-color);
        }

        .modal-icon {
            font-size: 4rem;
            color: var(--accent-color);
            margin-bottom: 20px;
        }

        .modal h3 {
            color: var(--secondary-color);
            margin-bottom: 15px;
            font-size: 1.8rem;
        }

        .modal p {
            color: var(--gray-color);
            margin-bottom: 25px;
        }