:root {
            --light-bg: #f5f5f5;
            --light-text: #333;
            --dark-bg: #121212;
            --dark-text: #f5f5f5;
            --toggle-size: 60px;
            --toggle-bg-light: #e0e0e0;
            --toggle-bg-dark: #383838;
            --toggle-border-light: #d0d0d0;
            --toggle-border-dark: #555;
            --sun-color: #ffcc33;
            --moon-color: #bbdefb;
            --cloud-color: #958d8d;
            --cloud-shadow: #e0e0e0;
            --star-color: #ffffff;
            --comet-color: #77bbff;
            --falling-star-color: #f8ffba;
        }

        body {
            font-family: 'Arial', sans-serif;
              display: flex;
                 justify-content: center;
                     align-items: center;
                         height: 100vh;
                             margin: 0;
                            background-color: var(--light-bg);
                         color: var(--light-text);
                     transition: background-color 0.5s ease, color 0.5s ease;
                 overflow: hidden;
            position: relative;
        }

        body.dark-mode {
            background-color: var(--dark-bg);
            color: var(--dark-text);
        }

        /* Background Elements */
        .bg-elements {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
            overflow: hidden;
        }

        /* Light Mode Elements - Clouds */
        .clouds {
            position: absolute;
            width: 100%;
            height: 100%;
            opacity: 0.7;
            transition: opacity 0.5s ease;
        }

        .dark-mode .clouds {
            opacity: 0;
        }

        .cloud {
            position: absolute;
            background-color: var(--cloud-color);
            border-radius: 50px;
            box-shadow: 0 5px 15px var(--cloud-shadow);
            opacity: 0.8;
            transition: transform 0.5s ease;
        }

        .cloud:before,
        .cloud:after {
            content: '';
            position: absolute;
            background-color: var(--cloud-color);
            border-radius: 50%;
        }

        .cloud-1 {
            top: 15%;
            left: 10%;
            width: 100px;
            height: 40px;
            animation: float 20s linear infinite;
        }

        .cloud-1:before {
            width: 60px;
            height: 60px;
            top: -30px;
            left: 15px;
        }

        .cloud-1:after {
            width: 50px;
            height: 50px;
            top: -20px;
            right: 15px;
        }

        .cloud-2 {
            top: 30%;
            right: 15%;
            width: 120px;
            height: 50px;
            animation: float 25s linear infinite reverse;
        }

        .cloud-2:before {
            width: 70px;
            height: 70px;
            top: -35px;
            left: 20px;
        }

        .cloud-2:after {
            width: 60px;
            height: 60px;
            top: -25px;
            right: 20px;
        }

        .cloud-3 {
            bottom: 20%;
            left: 25%;
            width: 80px;
            height: 35px;
            animation: float 18s linear infinite;
        }

        .cloud-3:before {
            width: 50px;
            height: 50px;
            top: -25px;
            left: 10px;
        }

        .cloud-3:after {
            width: 40px;
            height: 40px;
            top: -15px;
            right: 10px;
        }

        @keyframes float {
            0% {
                transform: translateX(-5vw);
            }
            100% {
                transform: translateX(105vw);
            }
        }

        /* Dark Mode Elements - Stars and Comets */
        .night-sky {
            position: absolute;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease;
        }

        .dark-mode .night-sky {
            opacity: 1;
        }

        .bg-star {
            position: absolute;
            background-color: var(--star-color);
            border-radius: 50%;
            opacity: 0;
            box-shadow: 0 0 3px 1px rgba(255, 255, 255, 0.3);
        }

        .dark-mode .bg-star {
            opacity: 0.8;
            animation: twinkle-bg 3s infinite alternate;
        }

        @keyframes twinkle-bg {
            0% {
                opacity: 0.3;
                transform: scale(0.8);
            }
            100% {
                opacity: 0.8;
                transform: scale(1);
            }
        }

        /* Generate multiple stars with different positions, sizes and animation delays */
        .bg-star:nth-child(1) { top: 10%; left: 15%; width: 3px; height: 3px; animation-delay: 0.2s; }
        .bg-star:nth-child(2) { top: 25%; left: 25%; width: 2px; height: 2px; animation-delay: 1.1s; }
        .bg-star:nth-child(3) { top: 15%; left: 60%; width: 4px; height: 4px; animation-delay: 0.5s; }
        .bg-star:nth-child(4) { top: 35%; left: 80%; width: 2px; height: 2px; animation-delay: 0.9s; }
        .bg-star:nth-child(5) { top: 50%; left: 10%; width: 3px; height: 3px; animation-delay: 1.5s; }
        .bg-star:nth-child(6) { top: 60%; left: 40%; width: 2px; height: 2px; animation-delay: 0.3s; }
        .bg-star:nth-child(7) { top: 75%; left: 70%; width: 4px; height: 4px; animation-delay: 1.2s; }
        .bg-star:nth-child(8) { top: 80%; left: 25%; width: 3px; height: 3px; animation-delay: 0.7s; }
        .bg-star:nth-child(9) { top: 70%; left: 85%; width: 2px; height: 2px; animation-delay: 1.8s; }
        .bg-star:nth-child(10) { top: 40%; left: 50%; width: 3px; height: 3px; animation-delay: 0.4s; }
        .bg-star:nth-child(11) { top: 20%; left: 40%; width: 2px; height: 2px; animation-delay: 1.3s; }
        .bg-star:nth-child(12) { top: 30%; left: 30%; width: 3px; height: 3px; animation-delay: 0.6s; }
        .bg-star:nth-child(13) { top: 55%; left: 65%; width: 2px; height: 2px; animation-delay: 1.9s; }
        .bg-star:nth-child(14) { top: 65%; left: 15%; width: 3px; height: 3px; animation-delay: 0.8s; }
        .bg-star:nth-child(15) { top: 85%; left: 45%; width: 2px; height: 2px; animation-delay: 1.4s; }

        /* Comets */
        .comet {
            position: absolute;
            width: 4px;
            height: 4px;
            background-color: var(--comet-color);
            border-radius: 50%;
            opacity: 0;
            box-shadow: 0 0 5px 1px rgba(119, 187, 255, 0.6);
        }

        .comet::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: linear-gradient(to left, var(--comet-color), transparent);
            transform-origin: right center;
            transform: rotate(15deg) translateX(-60px);
        }

        .dark-mode .comet {
            opacity: 1;
            animation: comet-move 8s linear infinite;
        }

        .comet:nth-child(1) {
            top: 20%;
            right: -60px;
            animation-delay: 0s;
        }

        .comet:nth-child(2) {
            top: 50%;
            right: -60px;
            animation-delay: 3s;
        }

        .comet:nth-child(3) {
            top: 70%;
            right: -60px;
            animation-delay: 6s;
        }

        @keyframes comet-move {
            0% {
                transform: translateX(0) translateY(0);
                opacity: 0;
            }
            2% {
                opacity: 1;
            }
            40% {
                opacity: 1;
            }
            60% {
                opacity: 0;
            }
            100% {
                transform: translateX(-110vw) translateY(50vh);
                opacity: 0;
            }
        }

        .container {
            text-align: center;
        }

        h1 {
            margin-bottom: 40px;
            font-size: 2rem;
        }

        .toggle-wrapper {
            display: inline-block;
            position: relative;
        }

        .toggle {
            position: relative;
            width: calc(var(--toggle-size) * 2);
            height: var(--toggle-size);
            border-radius: calc(var(--toggle-size) / 2);
            background-color: var(--toggle-bg-light);
            border: 2px solid var(--toggle-border-light);
            cursor: pointer;
            transition: all 0.4s ease;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }

        .dark-mode .toggle {
            background-color: var(--toggle-bg-dark);
            border-color: var(--toggle-border-dark);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
        }

        .toggle-circle {
            position: absolute;
            top: 5px;
            left: 5px;
            width: calc(var(--toggle-size) - 10px);
            height: calc(var(--toggle-size) - 10px);
            border-radius: 50%;
            background-color: white;
            transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55), background-color 0.4s ease;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .dark-mode .toggle-circle {
            transform: translateX(calc(var(--toggle-size)));
            background-color: #2b2b2b;
        }

        .sun, .moon {
            position: absolute;
            transition: opacity 0.3s ease, transform 0.5s ease;
        }

        .sun {
            width: calc(var(--toggle-size) * 0.5);
            height: calc(var(--toggle-size) * 0.5);
            background-color: var(--sun-color);
            border-radius: 50%;
            opacity: 1;
            transform: scale(1);
        }

        .dark-mode .sun {
            opacity: 0;
            transform: scale(0.5);
        }

        .moon {
            width: calc(var(--toggle-size) * 0.4);
            height: calc(var(--toggle-size) * 0.4);
            background-color: transparent;
            border-radius: 50%;
            box-shadow: inset calc(var(--toggle-size) * 0.1) calc(var(--toggle-size) * -0.1) 0 0 var(--moon-color);
            opacity: 0;
            transform: scale(0.5) rotate(-45deg);
        }

        .dark-mode .moon {
            opacity: 1;
            transform: scale(1) rotate(0);
        }

        .stars {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            opacity: 0;
            transition: opacity 0.5s ease;
        }

        .dark-mode .stars {
            opacity: 1;
        }

        .star {
            position: absolute;
            background-color: white;
            border-radius: 50%;
            opacity: 0;
            animation: twinkle 2s infinite alternate;
        }

        .star:nth-child(1) {
            width: 3px;
            height: 3px;
            top: 15%;
            left: 15%;
            animation-delay: 0s;
        }

        .star:nth-child(2) {
            width: 2px;
            height: 2px;
            top: 30%;
            left: 60%;
            animation-delay: 0.3s;
        }

        .star:nth-child(3) {
            width: 2px;
            height: 2px;
            top: 60%;
            left: 20%;
            animation-delay: 0.6s;
        }

        .star:nth-child(4) {
            width: 1px;
            height: 1px;
            top: 70%;
            left: 75%;
            animation-delay: 0.9s;
        }

        .dark-mode .star {
            opacity: 0.7;
        }

        @keyframes twinkle {
            0% {
                opacity: 0.2;
            }
            100% {
                opacity: 0.8;
            }
        }

        .message {
            margin-top: 30px;
            font-size: 1.2rem;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }