:root {
            --primary: #2c3e50;
            --accent: #e74c3c;
            --bg: #f4f7f6;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg);
            color: var(--primary);
            padding: 20px;

            @media (min-width: 384px){padding: 0px;}
            @media (min-width: 768px){padding: 10px;}
            @media (min-width: 992px){padding: 10px;}
        }

        .container {
            max-width: 900px;
            margin: auto;
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);

            @media (min-width: 384px){padding: 1px;}
            @media (min-width: 768px){padding: 10px;}
            @media (min-width: 992px){padding: 10px;}

        }

        h1 { text-align: center; color: var(--primary); }

        .selector-section {
            margin-bottom: 30px;
            padding: 20px;
            border: 2px dashed #bdc3c7;
            border-radius: 8px;

            @media (min-width: 384px){padding: 5px;}
            @media (min-width: 768px){padding: 10px;}
            @media (min-width: 992px){padding: 10px;}

        }

        .grid-personas {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 10px;
            max-height: max-content;
            /*max-height: 300px;*/
            overflow-y: auto;
            margin-top: 15px;
            padding: 10px;
            background: #fafafa;
        }

        .persona-item {
            display: flex;
            align-items: center;
            font-size: 0.9em;
        }

        .btn-sortear {
            display: block;
            width: 100%;
            padding: 15px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 1.1em;
            cursor: pointer;
            transition: background 0.3s;
        }

        .btn-sortear:hover { background-color: #34495e; }
        .btn-sortear:disabled { background-color: #bdc3c7; }

        #resultados {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .grupo-card {
            background: #fff;
            border-left: 5px solid var(--accent);
            padding: 15px;
            border-radius: 4px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        .grupo-card h3 { margin-top: 0; color: var(--accent); border-bottom: 1px solid #eee; padding-bottom: 5px; }
        .grupo-card ul { list-style: none; padding: 0; }
        .grupo-card li { padding: 5px 0; border-bottom: 1px inset #f9f9f9; }


        #resultados {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    align-items: stretch; /* Esto hace que todas las tarjetas midan lo mismo de alto */
}

:root {
    --primary: #2c3e50;
    --accent: #e74c3c;
    --bg: #f4f7f6;
}

body { font-family: 'Segoe UI', sans-serif; background-color: var(--bg); padding: 20px; }

.container { max-width: 1000px; margin: auto; background: white; padding: 30px; border-radius: 12px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }

.grid-personas {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    max-height: 400px;
    overflow-y: auto;
    background: #f9f9f9;
    padding: 15px;
    border-radius: 8px;
}

.persona-item { display: flex; align-items: center; gap: 8px; font-size: 0.9em; }

.btn-sortear {
    width: 100%; padding: 15px; margin-top: 20px;
    background: var(--primary); color: white; border: none; border-radius: 6px;
    cursor: pointer; font-size: 1.1em;
}

.btn-sortear:disabled { background: #ccc; }

#resultados {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px; margin-top: 30px;
}

.grupo-card {
    background: #fff; border-left: 5px solid var(--accent);
    padding: 15px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.grupo-card h3 { color: var(--accent); margin-top: 0; border-bottom: 1px solid #eee; }
.grupo-card ul { list-style: none; padding: 0; }
.grupo-card li { padding: 4px 0; border-bottom: 1px solid #fafafa; }


/* EFECTO CEBRA: Fondo alternado para los integrantes */
.grupo-card li:nth-child(even) {
    background-color: #f2f4f5; /* Color gris claro para las filas pares */
    border-radius: 4px;
}

/* Ajuste de padding para que el fondo se vea mejor */
.grupo-card li {
    padding: 4px 10px;
    margin: 2px 0;
}