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

        body {
            background: #000;
            overflow: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            font-family: 'Segoe UI', sans-serif;
        }

        /* Starfield background */
        .stars {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        .solar-system {
            position: relative;
            width: 100vmin;
            height: 100vmin;
            z-index: 1;
            cursor: grab;
            transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
        }

        /* Sun */
        .sun {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background:
                radial-gradient(circle at 30% 30%, #fff8cc 0%, rgba(255, 248, 204, 0.65) 18%, rgba(255, 248, 204, 0) 28%),
                radial-gradient(circle at 66% 65%, rgba(255, 108, 0, 0.95) 0%, rgba(255, 88, 0, 0.85) 20%, rgba(255, 70, 0, 0) 36%),
                radial-gradient(circle at center, #fff7b2 0%, #ffd966 28%, #ffb347 60%, #ff7a00 80%, #ff4d00 100%);
            transform: translate(-50%, -50%);
            box-shadow:
                0 0 40px #ff8800,
                0 0 80px #ff660088,
                0 0 150px #ff440044,
                0 0 300px #ff220022;
            animation: sunPulse 3s ease-in-out infinite;
            z-index: 10;
            cursor: pointer;
            overflow: hidden;
        }

        .sun::before {
            content: '';
            position: absolute;
            inset: 10%;
            border-radius: 50%;
            background:
                repeating-radial-gradient(
                    circle at 50% 50%,
                    rgba(255, 250, 180, 0.22) 0 2px,
                    rgba(255, 145, 20, 0.16) 2px 5px,
                    rgba(255, 98, 0, 0.08) 5px 8px
                );
            mix-blend-mode: screen;
            opacity: 0.7;
            animation: sunSurface 10s linear infinite;
        }

        .sun::after {
            content: '';
            position: absolute;
            top: -10px;
            left: -10px;
            right: -10px;
            bottom: -10px;
            border-radius: 50%;
            background: radial-gradient(circle, #ff880033, transparent 70%);
            animation: sunCorona 2s ease-in-out infinite alternate;
        }

        @keyframes sunSurface {
            from { transform: rotate(0deg) scale(1); }
            to { transform: rotate(360deg) scale(1.03); }
        }

        @keyframes sunPulse {
            0%, 100% { box-shadow: 0 0 40px #ff8800, 0 0 80px #ff660088, 0 0 150px #ff440044; }
            50% { box-shadow: 0 0 60px #ff8800, 0 0 100px #ff660088, 0 0 200px #ff440044; }
        }

        @keyframes sunCorona {
            0% { transform: scale(1); opacity: 0.8; }
            100% { transform: scale(1.3); opacity: 0.3; }
        }

        /* Orbit rings */
        .orbit {
            position: absolute;
            top: 50%;
            left: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: border-color 0.3s;
        }

        .orbit:hover {
            border-color: rgba(255, 255, 255, 0.3);
        }

        /* Planet wrapper - handles the orbit rotation */
        .planet-orbit {
            position: absolute;
            top: 50%;
            left: 50%;
            transform-origin: center center;
            z-index: 5;
        }

        /* Planet body */
        .planet {
            position: absolute;
            border-radius: 50%;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .planet:hover {
            transform: scale(1.4) !important;
        }

        /* Planet label */
        .planet-label {
            position: absolute;
            color: rgba(255, 255, 255, 0.7);
            font-size: 10px;
            white-space: nowrap;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .planet:hover + .planet-label,
        .sun:hover ~ .sun-label {
            opacity: 1;
        }

        .sun-label {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, 55px);
            color: rgba(255, 200, 50, 0.8);
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 2px;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.3s;
            z-index: 11;
        }

        .sun:hover ~ .sun-label {
            opacity: 1;
        }

        /* Mercury */
        .mercury {
            width: 8px;
            height: 8px;
            background-image: url('../mercury.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 6px #aaa3;
        }

        /* Venus */
        .venus {
            width: 14px;
            height: 14px;
            background-image: url('../venus.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 10px #e8b84b44;
        }

        /* Earth */
        .earth {
            width: 16px;
            height: 16px;
            background-image: url('../earth.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 12px #4a90d944;
        }

        /* Moon orbiting Earth */
        .moon-orbit {
            position: absolute;
            width: 30px;
            height: 30px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation: orbit-moon 2s linear infinite;
            pointer-events: none;
        }

        .moon {
            position: absolute;
            width: 4px;
            height: 4px;
            background-image: url('../moon.png');
            background-size: cover;
            background-position: center;
            border-radius: 50%;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            box-shadow: 0 0 4px #fff4;
        }

        @keyframes orbit-moon {
            from { transform: translate(-50%, -50%) rotate(0deg); }
            to { transform: translate(-50%, -50%) rotate(360deg); }
        }

        /* Mars */
        .mars {
            width: 12px;
            height: 12px;
            background-image: url('../mars.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 10px #e8553a44;
        }

        /* Jupiter */
        .jupiter {
            width: 34px;
            height: 34px;
            background-image: url('../jupiter.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 20px #d4a96a33;
            overflow: hidden;
        }

        /* Saturn */
        .saturn {
            width: 28px;
            height: 28px;
            background-image: url('../saturn.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 15px #e8c97a33;
        }

        .saturn-ring {
            position: absolute;
            width: 50px;
            height: 14px;
            border: 2px solid rgba(210, 180, 120, 0.5);
            border-radius: 50%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) rotateX(75deg);
            pointer-events: none;
        }

        /* Uranus */
        .uranus {
            width: 20px;
            height: 20px;
            background-image: url('../uranus.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 12px #7ec8e344;
        }

        /* Neptune */
        .neptune {
            width: 19px;
            height: 19px;
            background-image: url('../neptune.png');
            background-size: cover;
            background-position: center;
            box-shadow: 0 0 14px #3a5fc844;
        }

        /* Speed controls */
        .controls {
            position: fixed;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 12px;
            align-items: center;
            z-index: 100;
            background: rgba(255, 255, 255, 0.05);
            padding: 10px 20px;
            border-radius: 30px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .controls label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .controls input[type="range"] {
            -webkit-appearance: none;
            appearance: none;
            width: 120px;
            height: 4px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 2px;
            outline: none;
        }

        .controls input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 14px;
            height: 14px;
            background: #fff;
            border-radius: 50%;
            cursor: pointer;
        }

        .controls button {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 5px 14px;
            border-radius: 15px;
            cursor: pointer;
            font-size: 12px;
            letter-spacing: 1px;
            transition: background 0.3s;
        }

        .controls button:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* Info tooltip */
        .info-panel {
            position: fixed;
            top: 20px;
            right: 20px;
            background: rgba(0, 0, 0, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 15px 20px;
            border-radius: 12px;
            color: #fff;
            font-size: 13px;
            z-index: 100;
            opacity: 0;
            transform: translateY(-10px);
            transition: opacity 0.3s, transform 0.3s;
            pointer-events: none;
            backdrop-filter: blur(10px);
            max-width: 220px;
        }

        .info-panel.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .info-panel h3 {
            margin-bottom: 8px;
            font-weight: 500;
            letter-spacing: 1px;
        }

        .info-panel p {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.5;
            font-size: 11px;
        }

        /* Falling stars canvas */
        .falling-stars {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            pointer-events: none;
        }

        /* Loading screen */
        .loader {
            position: fixed;
            inset: 0;
            background: #000;
            z-index: 9999;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transition: opacity 1.2s ease, visibility 1.2s ease;
        }

        .loader.hidden {
            opacity: 0;
            visibility: hidden;
        }

        .loader-center {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .loader-sun {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background:
                radial-gradient(circle at 30% 30%, #fff8cc 0%, rgba(255, 248, 204, 0.6) 22%, rgba(255, 248, 204, 0) 36%),
                radial-gradient(circle at center, #ffe58f 0%, #ffc44d 45%, #ff9520 75%, #ff6f00 100%);
            box-shadow: 0 0 40px #ff8800, 0 0 80px #ff660066;
            animation: loaderPulse 1.5s ease-in-out infinite;
            position: relative;
            overflow: hidden;
        }

        .loader-sun::before {
            content: '';
            position: absolute;
            inset: 10%;
            border-radius: 50%;
            background:
                repeating-radial-gradient(
                    circle at 50% 50%,
                    rgba(255, 245, 160, 0.24) 0 1.6px,
                    rgba(255, 140, 30, 0.16) 1.6px 4px,
                    rgba(255, 90, 0, 0.08) 4px 6px
                );
            animation: sunSurface 8s linear infinite;
        }

        @keyframes loaderPulse {
            0%, 100% { transform: scale(1); box-shadow: 0 0 40px #ff8800, 0 0 80px #ff660066; }
            50% { transform: scale(1.12); box-shadow: 0 0 60px #ff8800, 0 0 120px #ff660088, 0 0 180px #ff440033; }
        }

        .loader-ring {
            position: absolute;
            border: 2px solid transparent;
            border-radius: 50%;
            animation: loaderSpin 1.2s linear infinite;
        }

        .loader-ring:nth-child(2) {
            width: 100px;
            height: 100px;
            border-top-color: rgba(255, 136, 0, 0.5);
        }

        .loader-ring:nth-child(3) {
            width: 140px;
            height: 140px;
            border-top-color: rgba(255, 200, 50, 0.25);
            animation-duration: 2s;
            animation-direction: reverse;
        }

        .loader-ring:nth-child(4) {
            width: 180px;
            height: 180px;
            border-top-color: rgba(100, 160, 255, 0.15);
            animation-duration: 2.8s;
        }

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

        .loader-text {
            margin-top: 110px;
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
            letter-spacing: 5px;
            text-transform: uppercase;
            animation: loaderFade 2s ease-in-out infinite;
        }

        @keyframes loaderFade {
            0%, 100% { opacity: 0.3; }
            50% { opacity: 1; }
        }

        /* Grab cursor for dragging */
        .solar-system.dragging {
            cursor: grabbing !important;
        }