/* Custom Styles for LUSO Space Website */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        /* Custom scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0f0f15;
        }
        ::-webkit-scrollbar-thumb {
            background: linear-gradient(to bottom, #8B5CF6, #3B82F6);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: linear-gradient(to bottom, #7c4dff, #2563eb);
        }
        
        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: #ffffff;
            background: #000000;
            overflow-x: hidden;
        }

        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Hero background with parallax effect */
        .hero-bg {
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            background-repeat: no-repeat;
        }

        /* Space card hover effects */
        .space-card {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
        }

        .space-card:hover {
            transform: translateY(-8px) scale(1.02);
            box-shadow: 0 25px 50px rgba(139, 69, 255, 0.2);
            border-color: rgba(139, 69, 255, 0.3);
        }

        /* Navigation link active state */
        .nav-link {
            position: relative;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            color: #8b5cf6;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #8b5cf6, #3b82f6);
            transition: width 0.3s ease;
        }

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

        /* Gradient text effect */
        .gradient-text {
            background: linear-gradient(135deg, #8b5cf6, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Custom animations */
        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
        }

        @keyframes pulse-glow {
            0%, 100% {
                box-shadow: 0 0 20px rgba(139, 69, 255, 0.5);
            }
            50% {
                box-shadow: 0 0 40px rgba(139, 69, 255, 0.8);
            }
        }

        @keyframes rotate {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }

        .float-animation {
            animation: float 6s ease-in-out infinite;
        }

        .pulse-glow {
            animation: pulse-glow 2s ease-in-out infinite;
        }

        .rotate-slow {
            animation: rotate 20s linear infinite;
        }

        /* Background particles effect */
        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 1;
        }

        .particle {
            position: absolute;
            width: 2px;
            height: 2px;
            background: rgba(255, 255, 255, 0.5);
            border-radius: 50%;
            animation: twinkle 3s infinite;
        }

        @keyframes twinkle {
            0%, 100% {
                opacity: 0;
            }
            50% {
                opacity: 1;
            }
        }

        /* Glassmorphism effect */
        .glass {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* Button hover effects */
        button {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        button:hover {
            box-shadow: 0 20px 40px rgba(139, 69, 255, 0.3);
        }

        /* Loading animation for images */
        img {
            transition: opacity 0.3s ease;
        }

        img[data-loaded="false"] {
            opacity: 0;
        }

        img[data-loaded="true"] {
            opacity: 1;
        }

        /* Section fade-in animation */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Cosmic border effect */
        .cosmic-border {
            position: relative;
            overflow: hidden;
        }

        .cosmic-border::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(45deg, #8b5cf6, #3b82f6, #8b5cf6);
            border-radius: inherit;
            z-index: -1;
            animation: rotate 4s linear infinite;
        }

        /* Text selection styling */
        ::selection {
            background: rgba(139, 69, 255, 0.3);
            color: #ffffff;
        }

        ::-moz-selection {
            background: rgba(139, 69, 255, 0.3);
            color: #ffffff;
        }

        /* Focus states for accessibility */
        button:focus,
        a:focus {
            outline: 2px solid #8b5cf6;
            outline-offset: 2px;
        }

        /* Prevent text selection on interactive elements */
        button,
        .space-card {
            user-select: none;
        }

        /* Performance optimizations */
        .space-card,
        button {
            will-change: transform;
        }

        /* High contrast mode support */
        @media (prefers-contrast: high) {
            .space-card {
                border-color: #ffffff;
            }
            
            .nav-link {
                color: #ffffff;
            }
        }

        /* Reduced motion support */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            
            .hero-bg {
                background-attachment: scroll;
            }
        }

        /* New: Improved mobile menu */
        #mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 320px;
            height: 100vh;
            background: rgba(15, 15, 25, 0.95);
            backdrop-filter: blur(20px);
            z-index: 100;
            transition: right 0.3s ease-out;
            box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
            padding: 80px 20px 40px;
            overflow-y: auto;
        }

        #mobile-menu.show {
            right: 0;
        }

        .mobile-menu-link {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: white;
            font-size: 18px;
            transition: color 0.3s;
        }

        .mobile-menu-link:hover {
            color: #8b5cf6;
        }

        .close-mobile-menu {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
        }

        /* New: Improved planet info panel */
        #planet-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.95), transparent);
            backdrop-filter: blur(10px);
            padding: 30px;
            transform: translateY(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 10;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        #planet-info.active {
            transform: translateY(0);
        }

        /* New: Improved event cards */
        .event-card {
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .event-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(139, 92, 246, 0.3);
        }

        .event-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #8b5cf6, #3b82f6);
        }

        /* New: Astronomer card improvements */
        .astronomer-card {
            transition: all 0.3s ease;
        }

        .astronomer-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(139, 92, 246, 0.3);
        }

        .astronomer-card img {
            transition: transform 0.5s ease;
        }

        .astronomer-card:hover img {
            transform: scale(1.05);
        }

        /* Responsive design adjustments */
        @media (max-width: 768px) {
            .hero-bg {
                background-attachment: scroll;
            }
            
            .space-card:hover {
                transform: translateY(-4px) scale(1.01);
            }

            #solar-system-container {
                height: 500px !important;
            }
        }

        /* New: Starfield animation */
        .star {
            position: absolute;
            background-color: white;
            border-radius: 50%;
            animation: twinkle var(--duration) infinite ease-in-out;
        }

        @keyframes twinkle {
            0%, 100% { opacity: 0.2; }
            50% { opacity: 1; }
        }