@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');

        body,
        button,
        h1,
        h2,
        h3,
        p,
        li,
        span {
            -webkit-user-select: none;
            /* Safari */
            -ms-user-select: none;
            /* IE */
            user-select: none;
        }

        * {
            box-sizing: border-box;
            user-select: none;
        }

        body {
            margin: 0;
            font-family: 'Orbitron', sans-serif;
            background: radial-gradient(circle at top, #1a1a2e, #0f0f1b);
            color: white;
            text-align: center;
        }

        html,
        body {
            touch-action: manipulation;
        }

        header {
            padding: 20px;
            font-size: clamp(18px, 4vw, 28px);
            letter-spacing: 2px;
            background: linear-gradient(90deg, #ff004c, #6a00ff);
            box-shadow: 0 0 20px #ff004c;
        }

        #leaderboard ul {
            padding: 0;
            margin: 0;
        }

        #leaderboard li {
            list-style: none;
            margin: 10px 0;
            padding: 12px 16px;
        }

        .container {
            padding: 20px;
            max-width: 900px;
            margin: auto;
        }

        h2 {
            margin: 10px 0;
            font-size: clamp(16px, 3vw, 22px);
        }

        #timer {
            color: #00fff7;
            text-shadow: 0 0 10px #00fff7;
        }

        #score {
            color: #ffea00;
            text-shadow: 0 0 10px #ffea00;
        }

        input {
            width: 90%;
            max-width: 300px;
            padding: 12px;
            margin: 15px auto;
            border-radius: 8px;
            border: 2px solid #6a00ff;
            background: #111;
            color: white;
            font-family: 'Orbitron', sans-serif;
            text-align: center;
            display: block;
        }

        #leaderboard li:nth-child(1) {
            background: linear-gradient(90deg, #ff0090, #c12189);
            color: black;
            font-weight: bold;
        }

        button {
            width: min(60vw, 230px);
            height: min(60vw, 230px);
            max-width: 230px;
            max-height: 230px;
            font-size: clamp(18px, 4vw, 26px);
            border: none;
            border-radius: 50%;
            background: radial-gradient(circle, #ff004c, #6a00ff);
            color: white;
            cursor: pointer;
            box-shadow: 0 0 25px #ff004c;
            transition: 0.2s;
        }

        button:active {
            transform: scale(0.95);
        }

        .ad {
            margin: 20px auto;
            padding: 20px;
            background: #141414;
            border: 2px dashed #444;
            width: 95%;
            max-width: 728px;
            color: #888;
        }

        #leaderboard {
            margin-top: 30px;
            padding: 20px;
            background: #111;
            border-radius: 12px;
            box-shadow: 0 0 20px #6a00ff;
            width: 95%;
            max-width: 450px;
            margin-left: auto;
            margin-right: auto;
        }

        #leaderboard h2 {
            color: #00fff7;
            margin-bottom: 15px;
        }

        #leaderboard li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 18px;
            margin: 10px 0;
            background: #1a1a1a;
            border-radius: 8px;
            font-size: 16px;
        }

        .player-name {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .player-score {
            font-weight: bold;
            color: #ffea00;
        }

        /* 📱 Extra small devices */
        @media (max-width:480px) {
            header {
                padding: 15px;
            }

            .container {
                padding: 15px;
            }
        }

        /* 💻 Large screens */
        @media (min-width:1024px) {
            .container {
                padding: 40px;
            }
        }