:root {
            --bg-color: #f4f4f4;
            --text-color: #333;
            --card-bg: #fff;
            --border-color: #ddd;
            --button-bg: #007bff;
            --button-text: #fff;
            --button-hover: #0056b3;
            --error-color: #dc3545;
        }

        body.dark {
            --bg-color: #121212;
            --text-color: #e0e0e0;
            --card-bg: #1e1e1e;
            --border-color: #333;
            --button-bg: #bb86fc;
            --button-text: #000;
            --button-hover: #9d4edd;
            --error-color: #cf6679;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            gap: 20px;
            min-height: 90vh;
            overflow-x: hidden;
            transition: background-color 0.3s, color 0.3s;
        }

        .main-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .summary {
            order: 3;
            margin-top: 10px;
            text-align: center;
            align-self: center;
        }

        .controls {
            order: 2;
        }

        .abilities {
            order: 1;
        }

        .side-panel {
            width: 200px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            height: fit-content;
            align-self: center;
            position: fixed;
            top: 50%;
            right: 20px;
            transform: translateY(-50%);
        }

        .side-panel h3 {
            margin-top: 0;
            text-align: center;
        }

        .side-panel ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-panel li {
            padding: 5px 0;
            border-bottom: 1px solid var(--border-color);
        }

        h1 {
            text-align: center;
            margin-bottom: 10px;
        }

        p {
            text-align: center;
            margin-bottom: 30px;
        }

        .controls {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        button {
            background-color: var(--button-bg);
            color: var(--button-text);
            border: none;
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: var(--button-hover);
        }

        .abilities {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 20px;
        }

        .ability {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            transition: box-shadow 0.3s;
        }

        .ability:hover {
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        }

        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }

        select {
            width: 100%;
            padding: 8px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--card-bg);
            color: var(--text-color);
            text-align: center;
        }

        .summary {
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            font-weight: bold;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .summary p {
            margin: 5px 0;
        }

        .summary.over-budget {
            color: var(--error-color);
        }

        .stat-controls {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .decrement,
        .increment {
            padding: 5px 10px;
            font-size: 18px;
            min-width: 30px;
        }

        /* Mobile view */
        @media (max-width: 768px) {
            body {
                flex-direction: column;
                padding: 10px;
                gap: 20px;
            }

            .main-content {
                position: static;
                transform: none;
                width: 100%;
                margin: 0;
            }

            .side-panel {
                display: none;
            }

            .abilities {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }

            .ability {
                padding: 10px;
            }

            button {
                padding: 12px 24px;
                font-size: 18px;
            }

            .decrement,
            .increment {
                padding: 8px 12px;
                font-size: 20px;
                min-width: 40px;
            }

            select {
                padding: 10px;
                font-size: 16px;
            }
        }