:root {
            --bg-gradient-start: #1c2541;
            --bg-gradient-end: #0b132b;
            --text-color: #e0e0e0;
            --button-bg: #3a506b;
            --button-shadow-light: rgba(255, 255, 255, 0.1);
            --button-shadow-dark: rgba(0, 0, 0, 0.4);
            --win-color: #4CAF50;
            --lose-color: #F44336;
            --draw-color: #FFC107;
            --glow-win: 0 0 25px var(--win-color);
            --glow-lose: 0 0 25px var(--lose-color);
            --glow-draw: 0 0 25px var(--draw-color);
        }

        body {
            font-family: 'Poppins', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
            color: var(--text-color);
            overflow: hidden;
        }

        .container {
            text-align: center;
            background: rgba(255, 255, 255, 0.05);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.5);
            border: 1px solid rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            max-width: 90%;
            width: 600px;
            animation: fadeIn 1s ease-out;
        }

        h1 {
            font-size: 2.8rem;
            font-weight: 700;
            margin-top: 0;
            margin-bottom: 1rem;
            text-shadow: 0 0 15px rgba(255,255,255,0.3);
        }
        
        p {
            font-size: 1.1rem;
            margin-bottom: 2rem;
            opacity: 0.8;
        }

        .choices {
            margin: 2rem 0;
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .choice-btn {
            background: var(--button-bg);
            color: white;
            border: 2px solid transparent;
            width: 120px;
            height: 120px;
            border-radius: 20px;
            font-size: 3rem;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            box-shadow: 
                -5px -5px 15px var(--button-shadow-light), 
                5px 5px 15px var(--button-shadow-dark);
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        
        .choice-btn:hover {
            transform: translateY(-10px) scale(1.05);
            box-shadow: 
                -8px -8px 20px var(--button-shadow-light), 
                8px 8px 20px var(--button-shadow-dark);
        }

        .choice-btn:active {
            transform: translateY(2px) scale(0.95);
            box-shadow: 
                inset -5px -5px 10px var(--button-shadow-light), 
                inset 5px 5px 10px var(--button-shadow-dark);
        }

        .results {
            margin-top: 2rem;
            animation: slideInUp 0.5s ease-out;
        }
        
        #result-text {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            animation: pulse 1.5s infinite;
        }
        
        .results .win { text-shadow: var(--glow-win); color: var(--win-color); }
        .results .lose { text-shadow: var(--glow-lose); color: var(--lose-color); }
        .results .draw { text-shadow: var(--glow-draw); color: var(--draw-color); }

        .choices-display {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 2rem;
            margin-top: 1rem;
            font-size: 1.2rem;
        }
        
        .choice-display {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .choice-display .icon {
            font-size: 4rem;
            padding: 1rem;
            border-radius: 20px;
            background: var(--button-bg);
            box-shadow: inset -3px -3px 8px var(--button-shadow-light), inset 3px 3px 8px var(--button-shadow-dark);
            transition: all 0.4s ease;
        }

        .choice-display.winner .icon {
            transform: scale(1.2);
            box-shadow: 0 0 20px, inset 0 0 10px;
        }
        
        #play-again-btn {
            background: linear-gradient(135deg, #6d6875, #4e4a55);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            margin-top: 2.5rem;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        #play-again-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.4);
        }
        
        .hidden {
            display: none;
        }

        /* --- Animations --- */
        @keyframes fadeIn {
            from { opacity: 0; transform: scale(0.9); }
            to { opacity: 1; transform: scale(1); }
        }

        @keyframes slideInUp {
            from { opacity: 0; transform: translateY(50px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.08); }
            100% { transform: scale(1); }
        }

        /* Responsive Design */
        @media (max-width: 650px) {
            .container {
                padding: 2rem 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            .choice-btn {
                width: 90px;
                height: 90px;
                font-size: 2.5rem;
            }
            .choices {
                gap: 1rem;
            }
            #result-text {
                font-size: 2.5rem;
            }
            .choice-display .icon {
                font-size: 3rem;
            }
        }