/* Zonnestelsel Styling */
        .solar-system-section {
            background: linear-gradient(to bottom, #0a0e27 0%, #1a1a2e 50%, #16213e 100%);
            min-height: 100vh;
            overflow-x: hidden;
            padding: 80px 0;
            position: relative;
        }
        
        .solar-system-container {
            position: relative;
            width: 100%;
            height: 800px;
            margin: 0 auto;
            overflow-x: auto;
            overflow-y: hidden;
        }
        
        .solar-system-wrapper {
            position: relative;
            width: 3000px;
            height: 100%;
            margin: 0 auto;
        }
        
        /* Zon styling */
        .sun-container {
            position: absolute;
            left: 150px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 10;
        }
        
        .sun {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #ffd700, #ff8c00);
            box-shadow: 0 0 60px #ff8c00, 0 0 120px #ffa500, 0 0 180px #ff6347;
            animation: pulse-sun 4s ease-in-out infinite;
            position: relative;
        }
        
        .sun img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
        }
        
        /* Wolken animatie */
        .clouds {
            position: absolute;
            width: 250px;
            height: 250px;
            top: -25px;
            left: -25px;
            border-radius: 50%;
            overflow: hidden;
            pointer-events: none;
            z-index: 15;
        }
        
        .clouds img {
            width: 100%;
            height: 100%;
            opacity: 0.4;
            animation: rotate-clouds 30s linear infinite;
            object-fit: cover;
        }
        
        @keyframes rotate-clouds {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        
        @keyframes pulse-sun {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        
        /* Planeet styling */
        .planet {
            position: absolute;
            top: 50%;
            cursor: pointer;
            transition: transform 0.3s ease;
            animation: float 6s ease-in-out infinite;
            z-index: 50;
        }
        
        .planet:hover {
            transform: translateY(-50%) scale(1.2) !important;
            z-index: 200 !important;
        }
        
        .planet img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
            box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
            pointer-events: none;
        }
        
        .planet-name {
            position: absolute;
            bottom: -30px;
            left: 50%;
            transform: translateX(-50%);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
            pointer-events: none;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(-50%); }
            50% { transform: translateY(-55%); }
        }
        
        /* Individuele planeten posities */
        .mercury {
            left: 420px;
            width: 40px;
            height: 40px;
            animation-delay: 0s;
            z-index: 51;
        }
        
        .venus {
            left: 600px;
            width: 50px;
            height: 50px;
            animation-delay: 0.5s;
            z-index: 52;
        }
        
        .earth {
            left: 820px;
            width: 70px;
            height: 70px;
            animation-delay: 1s;
            z-index: 54;
        }
        
        .moon {
            position: absolute;
            width: 20px;
            height: 20px;
            left: 75px;
            top: -10px;
            animation: orbit-moon 8s linear infinite;
            pointer-events: none;
        }
        
        .satellite {
            position: absolute;
            width: 15px;
            height: 15px;
            left: 80px;
            top: 15px;
            animation: orbit-satellite 5s linear infinite;
            pointer-events: none;
        }
        
        @keyframes orbit-moon {
            from { transform: rotate(0deg) translateX(35px) rotate(0deg); }
            to { transform: rotate(360deg) translateX(35px) rotate(-360deg); }
        }
        
        @keyframes orbit-satellite {
            from { transform: rotate(0deg) translateX(45px) rotate(0deg); }
            to { transform: rotate(360deg) translateX(45px) rotate(-360deg); }
        }
        
        .mars {
            left: 1050px;
            width: 65px;
            height: 65px;
            animation-delay: 1.5s;
            z-index: 53;
        }
        
        .jupiter {
            left: 1380px;
            width: 120px;
            height: 120px;
            animation-delay: 2s;
            z-index: 55;
        }
        
        .saturn {
            left: 1720px;
            width: 150px;
            height: 110px;
            animation-delay: 2.5s;
            z-index: 56;
        }
        
        /* Speciale styling voor Saturnus met ringen */
        .saturn img {
            border-radius: 0;
            object-fit: contain;
            box-shadow: none;
            filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.3));
        }
        
        .uranus {
            left: 2100px;
            width: 85px;
            height: 85px;
            animation-delay: 3s;
            z-index: 57;
        }
        
        .neptune {
            left: 2400px;
            width: 80px;
            height: 80px;
            animation-delay: 3.5s;
            z-index: 58;
        }
        
        /* Sterren achtergrond */
        .stars {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            z-index: 1;
        }
        
        .star {
            position: absolute;
            width: 2px;
            height: 2px;
            background: white;
            border-radius: 50%;
            animation: twinkle 3s infinite;
        }
        
        @keyframes twinkle {
            0%, 100% { opacity: 0.3; }
            50% { opacity: 1; }
        }
        
        /* Planet Modal/Popup Styling */
        .planet-modal {
            display: none;
            position: fixed;
            z-index: 10000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.85);
            animation: fadeIn 0.3s ease;
        }
        
        .planet-modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        .modal-content {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            border-radius: 20px;
            padding: 40px;
            max-width: 600px;
            width: 90%;
            position: relative;
            box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
            border: 2px solid rgba(255, 255, 255, 0.1);
            animation: slideUp 0.4s ease;
            color: #fff;
        }
        
        @keyframes slideUp {
            from {
                transform: translateY(50px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }
        
        .modal-close {
            position: absolute;
            right: 20px;
            top: 20px;
            font-size: 30px;
            color: #fff;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.1);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        
        .modal-close:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: rotate(90deg);
        }
        
        .modal-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 30px;
            text-align: center;
            color: #ffd700;
            text-shadow: 0 2px 10px rgba(255, 215, 0, 0.5);
        }
        
        .modal-info-grid {
            display: grid;
            gap: 20px;
            margin-bottom: 25px;
        }
        
        .modal-info-item {
            background: rgba(255, 255, 255, 0.05);
            padding: 15px 20px;
            border-radius: 10px;
            border-left: 4px solid #ffd700;
        }
        
        .modal-info-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #ffd700;
            margin-bottom: 5px;
            font-weight: 600;
        }
        
        .modal-info-value {
            font-size: 18px;
            font-weight: 500;
            color: #fff;
        }
        
        .modal-fun-fact {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 140, 0, 0.1));
            padding: 20px;
            border-radius: 10px;
            border: 2px solid rgba(255, 215, 0, 0.3);
            margin-top: 25px;
        }
        
        .modal-fun-fact-title {
            font-size: 16px;
            font-weight: 700;
            color: #ffd700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .modal-fun-fact-title::before {
            content: "💡";
            font-size: 20px;
        }
        
        .modal-fun-fact-text {
            font-size: 16px;
            line-height: 1.6;
            color: #fff;
        }
        
        /* Mobile responsiveness */
        @media (max-width: 768px) {
            .solar-system-container {
                height: 600px;
            }
            
            .solar-system-wrapper {
                width: 2000px;
            }
            
            .sun-container {
                left: 80px;
            }
            
            .sun {
                width: 120px;
                height: 120px;
            }
            
            .clouds {
                width: 150px;
                height: 150px;
                top: -15px;
                left: -15px;
            }
            
            .mercury {
                left: 240px;
                width: 30px;
                height: 30px;
            }
            
            .venus {
                left: 360px;
                width: 45px;
                height: 45px;
            }
            
            .earth {
                left: 500px;
                width: 50px;
                height: 50px;
            }
            
            .moon {
                width: 15px;
                height: 15px;
                left: 55px;
            }
            
            .satellite {
                width: 12px;
                height: 12px;
                left: 60px;
            }
            
            .mars {
                left: 650px;
                width: 40px;
                height: 40px;
            }
            
            .jupiter {
                left: 850px;
                width: 90px;
                height: 90px;
            }
            
            .saturn {
                left: 1080px;
                width: 110px;
                height: 85px;
            }
            
            .uranus {
                left: 1350px;
                width: 65px;
                height: 65px;
            }
            
            .neptune {
                left: 1550px;
                width: 60px;
                height: 60px;
            }
            
            .planet-name {
                font-size: 12px;
                bottom: -25px;
            }
            
            .modal-content {
                padding: 30px 20px;
            }
            
            .modal-title {
                font-size: 28px;
            }
            
            .modal-info-value {
                font-size: 16px;
            }
        }
        
        @media (max-width: 480px) {
            .solar-system-container {
                height: 500px;
            }
            
            .sun {
                width: 100px;
                height: 100px;
            }
            
            .planet-name {
                font-size: 10px;
                bottom: -20px;
            }
            
            .modal-title {
                font-size: 24px;
            }
        }
        
        /* Info sectie */
        .planet-info {
            background: rgba(255, 255, 255, 0.95);
            padding: 60px 0;
        }
        
        .planet-card {
            background: white;
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }
        
        .planet-card:hover {
            transform: translateY(-5px);
        }
        
        .section-title {
            color: #fff;
            text-align: center;
            margin-bottom: 40px;
            font-size: 42px;
            font-weight: 700;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
        }
        
        .scroll-hint {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            animation: bounce 2s infinite;
            z-index: 20;
        }
        
        @keyframes bounce {
            0%, 100% { transform: translateX(-50%) translateY(0); }
            50% { transform: translateX(-50%) translateY(-10px); }
        }