@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css");

        :root {
            --color-white: #ffffff;
            --color-yellow: #ffff00;
            --color-orange: #ffa500;
            --color-green: #008000;
            --color-blue: #0000ff;
            --color-brown: #8b4513;
            --color-black: #000000;
            --background-color: #f8f9fa;
            --gap: 10px;
            --padding: 10px;
            --max-width: 600px;
            --card-min-height: 450px;
            --stripe-width: 20px;
            --stripe-height: 25px;
            --stripe-top: 10px;
            --btn-min-width: 60px;
        }

        body {
            display: flex;
            flex-direction: column;
            align-items: center;
            height: 100vh;
            background-color: var(--background-color);
            padding: var(--padding);
            touch-action: manipulation;
        }

        .controls, .card {
            display: flex;
            flex-direction: column;
            gap: var(--gap);
            width: 100%;
            max-width: var(--max-width);
        }

        .controls {
            margin-bottom: 20px;
        }

        .card {
            min-height: var(--card-min-height);
            position: relative;
        }

        .control-group, .card-header, .card-footer {
            display: flex;
            gap: var(--gap);
        }

        .card-header, .card-footer {
            justify-content: space-between;
            align-items: center;
        }

        .card-footer {
            gap: var(--gap);
        }

        .card-count {
            margin-left: auto;
            margin-right: auto;
        }

        .color-stripe {
            position: absolute;
            top: var(--stripe-top);
            right: 0;
            width: var(--stripe-width);
            height: var(--stripe-height);
        }

        .breadcrumb {
            font-size: smaller;
        }

        .spinner-wrapper {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100%;
            width: 100%;
            position: absolute;
            top: 0;
            left: 0;
        }

        .btn {
            min-width: var(--btn-min-width);
        }

        .hidden {
            display: none;
        }

        .white { color: var(--color-white); }
        .yellow { color: var(--color-yellow); }
        .orange { color: var(--color-orange); }
        .green { color: var(--color-green); }
        .blue { color: var(--color-blue); }
        .brown { color: var(--color-brown); }
        .black { color: var(--color-black); }