/* ========== المتغيرات العامة ========== */
        :root {
            --primary-color: #003d82;
            --secondary-color: #ff6b6b;
            --accent-gold: #ffd700;
            --usa-blue: #3c78d8;
            --usa-red: #cc0000;
            --canada-red: #ff0000;
            --mexico-green: #006847;
            --mexico-white: #ffffff;
            --dark-bg: #1a1a2e;
            --light-bg: #f8f9fa;
            --text-dark: #2d3748;
            --text-light: #718096;
            --border-color: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ========== إعادة تعيين الأنماط ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Cairo', 'Tajawal', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: var(--text-dark);
            line-height: 1.8;
            overflow-x: hidden;
        }

        /* ========== شريط التنقل الثابت ========== */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.98);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-md);
            z-index: 1000;
            transition: var(--transition);
        }

        .navbar.scrolled {
            box-shadow: var(--shadow-lg);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 15px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--primary-color);
            text-decoration: none;
        }

        .logo i {
            font-size: 2rem;
            color: var(--accent-gold);
            animation: rotate 3s linear infinite;
        }

        @keyframes rotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 600;
            transition: var(--transition);
            padding: 8px 15px;
            border-radius: 8px;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--secondary-color);
            background: var(--light-bg);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 50%;
            width: 0;
            height: 3px;
            background: var(--secondary-color);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
            right: 0;
        }

        .menu-toggle {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-color);
        }

        /* ========== الهيدر الرئيسي ========== */
        .hero {
            margin-top: 80px;
            background: linear-gradient(135deg, 
                var(--usa-blue) 0%, 
                var(--usa-red) 25%, 
                var(--canada-red) 50%, 
                var(--mexico-green) 75%, 
                var(--primary-color) 100%);
            color: white;
            padding: 100px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('img/بانر.png') no-repeat center center / cover;
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 4rem;
            font-weight: 900;
            margin-bottom: 20px;
            text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
            animation: fadeInUp 1s ease-out;
        }

        .hero .subtitle {
            font-size: 1.8rem;
            margin-bottom: 15px;
            font-weight: 600;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
            animation: fadeInUp 1.2s ease-out;
        }

        .hero .host-countries {
            font-size: 1.3rem;
            margin-bottom: 30px;
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            animation: fadeInUp 1.4s ease-out;
        }

        .host-countries span {
            background: rgba(255, 255, 255, 0.2);
            padding: 10px 20px;
            border-radius: 25px;
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }

        .countdown {
            background: rgba(255, 255, 255, 0.15);
            -webkit-backdrop-filter: blur(15px);
            backdrop-filter: blur(15px);
            padding: 30px;
            border-radius: 20px;
            display: inline-block;
            margin-top: 20px;
            animation: fadeInUp 1.6s ease-out;
        }

        .countdown h3 {
            margin-bottom: 20px;
            font-size: 1.5rem;
        }

        .countdown-timer {
            display: flex;
            gap: 30px;
            justify-content: center;
        }

        .time-unit {
            text-align: center;
        }

        .time-unit .number {
            font-size: 3rem;
            font-weight: 900;
            display: block;
            color: var(--accent-gold);
        }

        .time-unit .label {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== الأقسام العامة ========== */
        .section {
            max-width: 1400px;
            margin: 60px auto;
            padding: 0 30px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            right: 50%;
            transform: translateX(50%);
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-gold));
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 20px auto 0;
        }

        /* ========== بطاقة المعلومات ========== */
        .info-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .info-card {
            background: white;
            padding: 35px;
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            text-align: center;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .info-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: var(--secondary-color);
        }

        .info-card i {
            font-size: 3.5rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
            display: block;
        }

        .info-card h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
            color: var(--primary-color);
        }

        .info-card p {
            color: var(--text-light);
            line-height: 1.6;
        }

        .info-card .number {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 10px;
        }

        /* ========== المجموعات ========== */
        .groups-container {
            background: white;
            padding: 50px;
            border-radius: 25px;
            box-shadow: var(--shadow-lg);
            margin-bottom: 50px;
        }

        .groups-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .group-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
        }

        .group-card:hover {
            transform: scale(1.05) rotate(1deg);
            box-shadow: var(--shadow-lg);
        }

        .group-card img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }

        .group-card:hover img {
            transform: scale(1.1);
        }

        .group-card .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            padding: 20px;
            color: white;
            transform: translateY(100%);
            transition: var(--transition);
        }

        .group-card:hover .overlay {
            transform: translateY(0);
        }

        /* ========== الملاعب ========== */
        .stadiums-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }

        .stadium-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }

        .stadium-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .stadium-image {
            width: 100%;
            height: 250px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 4rem;
            overflow: hidden;
        }

        .stadium-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .stadium-info {
            padding: 25px;
        }

        .stadium-info h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .stadium-info .location {
            color: var(--text-light);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .stadium-info .capacity {
            background: var(--light-bg);
            padding: 12px;
            border-radius: 10px;
            text-align: center;
            font-weight: 600;
            color: var(--secondary-color);
        }

        /* ========== الجدول الزمني ========== */
        .timeline {
            position: relative;
            padding: 40px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            right: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
        }

        .timeline-item {
            display: flex;
            margin-bottom: 50px;
            position: relative;
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .timeline-content {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: var(--shadow-md);
            width: 45%;
            position: relative;
        }

        .timeline-content::before {
            content: '';
            position: absolute;
            top: 30px;
            width: 0;
            height: 0;
            border-style: solid;
        }

        .timeline-item:nth-child(odd) .timeline-content::before {
            left: 100%;
            border-width: 15px 0 15px 15px;
            border-color: transparent transparent transparent white;
        }

        .timeline-item:nth-child(even) .timeline-content::before {
            right: 100%;
            border-width: 15px 15px 15px 0;
            border-color: transparent white transparent transparent;
        }

        .timeline-dot {
            position: absolute;
            right: 50%;
            transform: translateX(50%);
            width: 30px;
            height: 30px;
            background: var(--accent-gold);
            border: 4px solid white;
            border-radius: 50%;
            box-shadow: var(--shadow-md);
            z-index: 1;
        }

        .timeline-content h3 {
            color: var(--primary-color);
            margin-bottom: 10px;
            font-size: 1.3rem;
        }

        .timeline-content .date {
            color: var(--secondary-color);
            font-weight: 600;
            margin-bottom: 15px;
            display: block;
        }

        .timeline-content p {
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ========== الإحصائيات ========== */
        .stats-container {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            padding: 60px 30px;
            border-radius: 25px;
            color: white;
            text-align: center;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-top: 40px;
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 4rem;
            font-weight: 900;
            color: var(--accent-gold);
            display: block;
            margin-bottom: 10px;
        }

        .stat-label {
            font-size: 1.2rem;
            opacity: 0.95;
        }

        /* ========== المودال ========== */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.95);
            animation: fadeIn 0.3s ease;
        }

        .modal-content {
            position: relative;
            margin: 2% auto;
            max-width: 95%;
            max-height: 90vh;
            animation: zoomIn 0.3s ease;
        }

        .modal-content img {
            width: 100%;
            height: auto;
            border-radius: 15px;
            box-shadow: 0 0 50px rgba(255, 255, 255, 0.3);
        }

        .modal-close {
            position: absolute;
            top: 20px;
            left: 40px;
            color: white;
            font-size: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            z-index: 2001;
        }

        .modal-close:hover {
            color: var(--secondary-color);
            transform: rotate(90deg);
        }

        .modal-caption {
            text-align: center;
            color: white;
            padding: 20px;
            font-size: 1.5rem;
            font-weight: 600;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes zoomIn {
            from {
                transform: scale(0.8);
                opacity: 0;
            }
            to {
                transform: scale(1);
                opacity: 1;
            }
        }

        /* ========== الفوتر ========== */
        footer {
            background: var(--dark-bg);
            color: white;
            padding: 60px 30px 30px;
            margin-top: 80px;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            color: var(--accent-gold);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .footer-section a:hover {
            color: var(--accent-gold);
            padding-right: 10px;
        }

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

        .social-links a {
            width: 45px;
            height: 45px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .social-links a:hover {
            background: var(--accent-gold);
            color: var(--dark-bg);
            transform: translateY(-5px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
        }

        /* ========== زر العودة للأعلى ========== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            left: 30px;
            width: 55px;
            height: 55px;
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: 50%;
            font-size: 1.5rem;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            z-index: 999;
        }

        .scroll-top:hover {
            background: var(--primary-color);
            transform: translateY(-5px);
        }

        .scroll-top.show {
            display: flex;
        }

        /* ========== التصميم المتجاوب ========== */
        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                background: white;
                width: 70%;
                height: calc(100vh - 70px);
                flex-direction: column;
                padding: 40px;
                box-shadow: var(--shadow-lg);
                transition: var(--transition);
            }

            .nav-links.active {
                right: 0;
            }

            .menu-toggle {
                display: block;
            }

            .timeline::before {
                right: 20px;
            }

            .timeline-item {
                flex-direction: row !important;
            }

            .timeline-content {
                width: calc(100% - 60px);
                margin-right: 60px;
            }

            .timeline-content::before {
                left: 100% !important;
                border-width: 15px 0 15px 15px !important;
                border-color: transparent transparent transparent white !important;
            }

            .timeline-dot {
                right: 5px;
                transform: translateX(0);
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero .subtitle {
                font-size: 1.3rem;
            }

            .countdown-timer {
                gap: 15px;
            }

            .time-unit .number {
                font-size: 2rem;
            }

            .section-title {
                font-size: 2rem;
            }

            .info-cards,
            .groups-grid,
            .stadiums-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

            .footer-content {
                grid-template-columns: 1fr;
            }

            .modal-close {
                left: 20px;
                font-size: 35px;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2rem;
            }

            .countdown-timer {
                flex-wrap: wrap;
                gap: 10px;
            }

            .time-unit {
                flex: 1 1 45%;
            }

            .host-countries {
                font-size: 1rem;
            }
        }

        /* ========== Animations ========== */
        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .pulse-animation {
            animation: pulse 2s infinite;
        }

        /* ========== تحسينات إضافية ========== */
        .highlight-text {
            color: var(--secondary-color);
            font-weight: 700;
        }

        .badge {
            display: inline-block;
            padding: 5px 15px;
            background: var(--accent-gold);
            color: var(--dark-bg);
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-right: 10px;
        }

        .divider {
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-gold));
            margin: 30px auto;
            border-radius: 2px;
        }